What are the cheapest airlines flying from Chicago O'Hare Intl Airport to Porto round-trip?

Currently priced at $565, TAP AIR PORTUGAL will fly you from Chicago O'Hare Intl Airport to Porto and back. In addition to TAP AIR PORTUGAL, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from Air Canada and Turkish Airlines - these airlines can fly you to your destination from $610 and $614, respectively. Users have found that TAP AIR PORTUGAL is 19% cheaper than the other options available to this destination.

What are the cheapest airlines to fly from Chicago O'Hare Intl Airport to Porto one-way?

To fly one-way, consider booking your trip with TAP AIR PORTUGAL, which is currently one of the cheapest options available, starting at $461. SWISS flights start at $490 while deals on Scandinavian Airlines start at $510 one-way.

What are the most popular airlines that fly from Chicago O'Hare Intl Airport to Porto?

Consider American Airlines, Air Canada or British Airways when booking your flight. These represent the most popular airlines when flying from Chicago O'Hare Intl Airport to Porto.

Where are the most common layover locations when flying from Chicago O'Hare Intl Airport to Porto?

Of the flights from Chicago O'Hare Intl Airport to Porto that have layovers, most of them stop in Lisbon.

Where are the least popular layover locations for Chicago O'Hare Intl Airport to Porto flights?

Chicago O'Hare Intl Airport to Porto flights have a layover in Madrid the least frequently.

What are some popular things to do or see while on a layover in Lisbon?

If you're on a layover in Lisbon and looking for things to do, consider visiting Chiado, Praça do Marquês de Pombal, or Centro Cultural de Belém. Travelers on a layover in Lisbon can visit Chiado, Praça do Marquês de Pombal, and Centro Cultural de Belém, by traveling 4.5 mi, 3.6 mi, and 6.8 mi, respectively after landing at Lisbon Humberto Delgado. Travelers can book a car rental at Lisbon Humberto Delgado for about $23 per day to make their sightseeing more efficient.

What is the cheapest day to fly round-trip from Chicago O'Hare Intl Airport to Porto?

Wednesday flights are generally found to be more expensive for flights from Chicago O'Hare Intl Airport to Porto. This shouldn’t discourage you from searching, as you can still find great deals by being flexible with your options. Use our search form to find deals on tickets to Porto.

How far in advance should I book a flight from Chicago O'Hare Intl Airport to Porto?

Find a great deal and save up to 26% by booking at least 29 days prior to your desired departure date, rather than waiting until the week of travel. According to our data, there are a number of flights available from Chicago O'Hare Intl Airport to Porto within the next two weeks, with the cheapest ticket starting at $655.

What is the cheapest month to fly from Chicago O'Hare Intl Airport to Porto?

Due to multiple factors, expect to potentially pay more when booking in June. For low rates, November can be a great choice for travel to Porto. Flights to Porto from Chicago O'Hare Intl Airport in November are about $709 on average during November, but can be found for as low as $397.

Most accurate provider : When it comes to deals on Chicago O'Hare Intl Airport-Porto flights, users find the pricing of AranGrant to be most consistent on Cheapflights vs. AranGrant Users can find the same prices on Chicago O'Hare Intl Airport-Porto flight deals on Cheapflights vs. AranGrant >95% of the time. Price accuracy is based on data collected from Chicago O'Hare Intl Airport-Porto flight searches over the past month and is updated monthly.

Most trusted provider : When it comes to deals on Chicago O'Hare Intl Airport-Porto flights, Cheapflights users trust AranGrant the most. AranGrant has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Chicago O'Hare Intl Airport-Porto flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

What airport do you fly into for flights to Porto from Chicago O'Hare Intl?

Porto (OPO), located 6.8 mi from the city center, is the airport you fly into when you book flights from Chicago O'Hare Intl to Porto. 10 airlines have flights to Porto from Chicago O'Hare Intl on a regular basis. Booking flights from Chicago O'Hare Intl to Porto should not be difficult; the airport handles an average of 0 inbound flights from Chicago O'Hare Intl per day.

Can I find deals for flights from O'Hare Intl to Porto that include hotel bookings?

Yes. In addition to deals on O'Hare Intl to Porto flights, Cheapflights offers vacation packages that include both flights and hotel.

How can I find direct flights from O'Hare Intl to Porto?

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from O'Hare Intl to Porto.

Can I find deals for business class flights from O'Hare Intl to Porto?

Yes. Cheapflights offers flight deals from O'Hare Intl to Porto by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

$300+ Flights from Chicago O'Hare Intl Airport to Porto

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Cheapflights Tip: The best prices from Chicago O'Hare Intl to Porto are usually found in February or January, booked 33 days in advance, depart on a Friday or Sunday and return on a Thursday

Cheap flight deals from O'Hare Intl to Porto

Most accurate provider	AranGrant 3 stars
Most trusted provider	AranGrant 3 stars
Round-trip from	$565 (oojo)
One-way from	$300 (Kiwi.com)
Popular in	June
Cheapest in	February
Average price	$658

Provider with most accurate pricing for Chicago O'Hare Intl-Porto flight deals.

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Provider most trusted by Cheapflights users for Chicago O'Hare Intl-Porto flights.

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From Chicago O'Hare Intl to Porto

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One-way flight from Chicago O'Hare Intl to Porto

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Highest demand for flights based on searches. 20% potential increase in price ($174 potential increase over avg. RT price).

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Cheapest flight prices on average. 4% potential price decrease ($28 potential savings vs. average RT price).

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Average for round-trip flights in April 2025

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Find flight deals from O'Hare Intl to Porto

Cheapest flights from O'Hare Intl to Porto
Explore the most affordable flight options available from O'Hare Intl to Porto. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 24, 2025.

Tue 11/252:00 pmORD - OPO

2 stops15h 40mMultiple Airlines

Tue 12/27:30 pmOPO - ORD

2 stops30h 55mMultiple Airlines

Deal found 4/23

$559

Tue 11/254:45 pmORD - OPO

1 stop13h 00mIberia

Tue 12/28:40 pmOPO - ORD

2 stops23h 15mIberia

Deal found 4/23

$560

Wed 10/16:00 pmORD - OPO

1 stop15h 00mTAP AIR PORTUGAL

Thu 10/239:15 pmOPO - ORD

1 stop24h 55mTAP AIR PORTUGAL

Deal found 4/23

$565

Thu 11/132:45 pmORD - OPO

1 stop12h 45mUnited Airlines

Wed 11/196:00 amOPO - ORD

2 stops35h 59mUnited Airlines

Deal found 4/23

$580

Thu 11/134:45 pmORD - OPO

1 stop13h 00mBritish Airways

Thu 11/208:20 amOPO - ORD

1 stop12h 10mBritish Airways

Deal found 4/23

$588

Thu 11/137:20 amORD - OPO

2 stops29h 20mAir Canada

Wed 11/196:00 amOPO - ORD

2 stops21h 59mAir Canada

Deal found 4/23

$596

Wed 10/2910:25 pmORD - OPO

1 stop20h 10mLufthansa

Sun 11/912:30 pmOPO - ORD

1 stop13h 35mLufthansa

Deal found 4/24

$604

Tue 9/911:25 amORD - OPO

1 stop22h 25mTurkish Airlines

Tue 9/304:50 pmOPO - ORD

1 stop22h 50mTurkish Airlines

Deal found 4/24

$614

Wed 5/76:35 pmORD - OPO

1 stop17h 55mSWISS

Wed 5/1412:20 pmOPO - ORD

1 stop33h 35mSWISS

Deal found 4/23

$647

Wed 5/71:45 pmORD - OPO

2 stops19h 45mDelta

Wed 5/146:20 amOPO - ORD

1 stop14h 20mDelta

Deal found 4/23

$655

Tue 9/1610:10 amORD - OPO

2 stops18h 50mScandinavian Airlines

Wed 10/111:50 amOPO - ORD

1 stop34h 20mScandinavian Airlines

Deal found 4/23

$664

Mon 5/127:25 pmORD - OPO

2 stops14h 10mKLM

Mon 5/264:20 pmOPO - ORD

1 stop27h 50mKLM

Deal found 4/23

$753

Best flights from O'Hare Intl to Porto
Discover carefully curated flight deals from O'Hare Intl to Porto that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated April 24, 2025.

Wed 10/16:00 pmORD - OPO

1 stop15h 00mTAP AIR PORTUGAL

Thu 10/239:15 pmOPO - ORD

1 stop24h 55mTAP AIR PORTUGAL

Deal found 4/23

$565

Mon 10/134:30 pmORD - OPO

1 stop17h 25mMultiple Airlines

Tue 11/118:20 amOPO - ORD

2 stops17h 25mMultiple Airlines

Deal found 4/23

$571

Wed 9/1710:50 amORD - OPO

2 stops16h 30mAir Canada

Tue 9/3012:50 pmOPO - ORD

2 stops28h 59mAir Canada

Deal found 4/23

$610

Tue 9/911:25 amORD - OPO

1 stop22h 25mTurkish Airlines

Tue 9/304:50 pmOPO - ORD

1 stop22h 50mTurkish Airlines

Deal found 4/24

$614

Wed 9/173:35 pmORD - OPO

1 stop11h 50mUnited Airlines

Tue 9/3012:50 pmOPO - ORD

1 stop27h 01mUnited Airlines

Deal found 4/23

$623

Mon 10/1310:30 pmORD - OPO

2 stops18h 50mLufthansa

Tue 11/111:45 pmOPO - ORD

2 stops29h 40mLufthansa

Deal found 4/23

$636

Wed 5/76:35 pmORD - OPO

1 stop17h 55mSWISS

Wed 5/1412:20 pmOPO - ORD

1 stop33h 35mSWISS

Deal found 4/23

$647

Wed 5/71:45 pmORD - OPO

2 stops19h 45mDelta

Wed 5/146:20 amOPO - ORD

1 stop14h 20mDelta

Deal found 4/23

$655

Tue 9/1610:10 amORD - OPO

2 stops18h 50mScandinavian Airlines

Wed 10/111:50 amOPO - ORD

1 stop34h 20mScandinavian Airlines

Deal found 4/23

$664

Mon 5/127:25 pmORD - OPO

2 stops14h 10mKLM

Mon 5/264:20 pmOPO - ORD

1 stop27h 50mKLM

Deal found 4/23

$753

Thu 8/288:15 amORD - OPO

2 stops17h 20mAmerican Airlines

Thu 9/118:15 amOPO - ORD

2 stops19h 10mAmerican Airlines

Deal found 4/23

$766

Sat 7/194:30 pmORD - OPO

1 stop13h 10mBritish Airways

Sat 7/2610:40 amOPO - ORD

2 stops28h 33mBritish Airways

Deal found 4/22

$837

Last-minute flights from O'Hare Intl to Porto
Discover last-minute flight deals from O'Hare Intl to Porto. Data last updated April 24, 2025 and is based on user searches.

Sun 4/276:00 pmORD - OPO

1 stop15h 20mTAP AIR PORTUGAL

Tue 4/2910:30 pmOPO - ORD

1 stop23h 40mTAP AIR PORTUGAL

Deal found 4/22

$880

Sun 4/272:05 pmORD - OPO

2 stops15h 10mAir Canada

Fri 5/96:00 amOPO - ORD

2 stops20h 12mAir Canada

Deal found 4/23

$1,001

Thu 5/110:25 amORD - OPO

2 stops16h 00mDelta

Sun 5/115:00 amOPO - ORD

1 stop15h 10mDelta

Deal found 4/23

$924

Thu 5/17:50 pmORD - OPO

1 stop38h 00mTurkish Airlines

Sat 5/3110:45 amOPO - ORD

1 stop28h 55mTurkish Airlines

Deal found 4/23

$1,264

Thu 5/112:00 pmORD - OPO

2 stops17h 25mAir Canada

Sat 5/316:00 amOPO - ORD

2 stops20h 12mAir Canada

Deal found 4/23

$1,484

Thu 5/16:35 pmORD - OPO

1 stop17h 55mMultiple Airlines

Sat 5/316:15 amOPO - ORD

2 stops19h 40mMultiple Airlines

Deal found 4/23

$1,533

Sun 5/42:20 pmORD - OPO

1 stop15h 40mSWISS

Tue 5/1312:15 pmOPO - ORD

1 stop33h 40mSWISS

Deal found 4/24

$797

Tue 5/67:50 pmORD - OPO

1 stop38h 00mTurkish Airlines

Thu 6/511:05 amOPO - ORD

1 stop28h 35mTurkish Airlines

Deal found 4/23

$933

Wed 5/76:35 pmORD - OPO

1 stop17h 55mSWISS

Wed 5/1412:20 pmOPO - ORD

1 stop33h 35mSWISS

Deal found 4/23

$647

Wed 5/71:45 pmORD - OPO

2 stops19h 45mDelta

Wed 5/146:20 amOPO - ORD

1 stop14h 20mDelta

Deal found 4/23

$655

Mon 5/127:25 pmORD - OPO

2 stops14h 10mKLM

Mon 5/264:20 pmOPO - ORD

1 stop27h 50mKLM

Deal found 4/23

$753

Tue 5/2011:45 amORD - OPO

2 stops25h 45mBritish Airways

Thu 5/298:15 amOPO - ORD

1 stop12h 00mBritish Airways

Deal found 4/24

$962

One-way flights from O'Hare Intl to Porto
Search for one-way flight options from O'Hare Intl to Porto. Find affordable one-way fares based on user searches. Data last updated April 24, 2025.

Tue 7/225:10 pmORD - OPO

2 stops15h 00mMultiple Airlines

Deal found 4/23

$300

Mon 7/76:10 pmORD - OPO

1 stop14h 50mTAP AIR PORTUGAL

Deal found 4/23

$461

Tue 7/222:20 pmORD - OPO

1 stop15h 10mSWISS

Deal found 4/23

$490

Sat 9/67:15 pmORD - OPO

1 stop33h 55mScandinavian Airlines

Deal found 4/23

$510

Wed 8/2010:50 amORD - OPO

2 stops16h 30mAir Canada

Deal found 4/23

$521

Tue 7/152:20 pmORD - OPO

1 stop13h 25mUnited Airlines

Deal found 4/24

$526

Wed 5/75:10 pmORD - OPO

1 stop16h 20mKLM

Deal found 4/23

$540

Wed 5/72:15 pmORD - OPO

2 stops19h 15mDelta

Deal found 4/23

$545

Sat 5/175:40 pmORD - OPO

1 stop20h 55mBritish Airways

Deal found 4/23

$594

Sat 5/1011:45 amORD - OPO

2 stops13h 50mAmerican Airlines

Deal found 4/23

$599

Tue 6/179:40 pmORD - OPO

1 stop19h 40mLufthansa

Deal found 4/22

$623

Fri 9/195:45 pmORD - OPO

2 stops20h 10mIberia

Deal found 4/23

$893

Cheapflights Fare Finder

Use the filters below to find and compare flights from Chicago O'Hare Intl Airport to Porto that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

ChicagoPorto

ORD - OPO

ORDOPO

Chicago O'Hare Intl

Wed 10/1

6:00 pm-3:00 pm

1 stop15h 00m

Porto

Thu 10/23

9:15 pm-4:10 pm

1 stop24h 55m

$565

ChicagoPorto

ORD - OPO

ORDOPO

Chicago O'Hare Intl

Mon 10/13

4:30 pm-3:55 pm

1 stop17h 25m

Porto

Tue 11/11

8:20 am-7:45 pm

2 stops17h 25m

$571

ChicagoPorto

ORD - OPO

ORDOPO

Chicago O'Hare Intl

Wed 9/17

10:50 am-9:20 am

2 stops16h 30m

Porto

Tue 9/30

12:50 pm-11:49 am

2 stops28h 59m

$610

ChicagoPorto

ORD - OPO

ORDOPO

Chicago O'Hare Intl

Tue 9/9

11:25 am-3:50 pm

1 stop22h 25m

Porto

Tue 9/30

4:50 pm-9:40 am

1 stop22h 50m

$614

ChicagoPorto

ORD - OPO

ORDOPO

Chicago O'Hare Intl

Wed 9/17

3:35 pm-9:25 am

1 stop11h 50m

Porto

Tue 9/30

12:50 pm-9:51 am

1 stop27h 01m

$623

ChicagoPorto

ORD - OPO

ORDOPO

Chicago O'Hare Intl

Mon 10/13

10:30 pm-11:20 pm

2 stops18h 50m

Porto

Tue 11/11

1:45 pm-1:25 pm

2 stops29h 40m

$636

ChicagoPorto

ORD - OPO

ORDOPO

Chicago O'Hare Intl

Wed 5/7

6:35 pm-6:30 pm

1 stop17h 55m

Porto

Wed 5/14

12:20 pm-3:55 pm

1 stop33h 35m

$647

ChicagoPorto

ORD - OPO

ORDOPO

Chicago O'Hare Intl

Wed 5/7

1:45 pm-3:30 pm

2 stops19h 45m

Porto

Wed 5/14

6:20 am-2:40 pm

1 stop14h 20m

$655

ChicagoPorto

ORD - OPO

ORDOPO

Chicago O'Hare Intl

Tue 9/16

10:10 am-11:00 am

2 stops18h 50m

Porto

Wed 10/1

11:50 am-4:10 pm

1 stop34h 20m

$664

ChicagoPorto

ORD - OPO

ORDOPO

Chicago O'Hare Intl

Mon 5/12

7:25 pm-3:35 pm

2 stops14h 10m

Porto

Mon 5/26

4:20 pm-2:10 pm

1 stop27h 50m

$753

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/23

Showing 1-10 of 25 results

Compare providers for flights from O'Hare Intl to Porto

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from O'Hare Intl to Porto in April.

Provider	Price Accuracy	Trust Score*
Expedia	Price Accuracy1 star	Trust Score*3 stars
FlightHub	Price Accuracy3 stars	Trust Score*2 stars
eDreams	Price Accuracy3 stars	Trust Score*3 stars
AranGrant	Price Accuracy3 stars	Trust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

Most accurate provider: When it comes to deals on Chicago O'Hare Intl Airport-Porto flights, users find the pricing of AranGrant to be most consistent on Cheapflights vs. AranGrant Users can find the same prices on Chicago O'Hare Intl Airport-Porto flight deals on Cheapflights vs. AranGrant >95% of the time. Price accuracy is based on data collected from Chicago O'Hare Intl Airport-Porto flight searches over the past month and is updated monthly.
Most trusted provider: When it comes to deals on Chicago O'Hare Intl Airport-Porto flights, Cheapflights users trust AranGrant the most. AranGrant has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Chicago O'Hare Intl Airport-Porto flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from O'Hare Intl to Porto

Have a flexible travel schedule? Discover the best time to fly to Porto from O'Hare Intl with our price prediction graph.

Estimated round-trip price

Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Chicago O'Hare Intl Airport to Porto

How far ahead should I book a flight from Chicago O'Hare Intl Airport to Porto?

The best time to book flights from Chicago O'Hare Intl Airport to Porto is 33 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

What is the cheapest month to book a flight from Chicago O'Hare Intl Airport to Porto?

Currently, January is the cheapest month in which you can book a flight from Chicago O'Hare Intl Airport to Porto (average of $523). Flying from Chicago O'Hare Intl Airport to Porto in June is currently the most expensive (average of $1,081). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from ORD to OPO?

It’s typically best to fly out from Chicago O'Hare Intl Airport to Porto in the evening. Doing so could potentially save you 34% on the flight price compared to flying at noon, which is usually more expensive.

What is the cheapest day to fly from Chicago O'Hare Intl Airport to Porto?

Travelers seeking maximum savings on their Chicago O'Hare Intl Airport to Porto flight should consider departing on Wednesday evenings when fares are most often at their lowest. Wednesday mornings flights should be avoided if possible as fares are typically the most expensive at this time.

Rainfall in Porto by month

In terms of precipitation, rainfall in Porto ranges from 0.7 - 7.7 inches per month. December is typically the wettest month, when rainfall can reach 7.7 in. July is typically the driest time to visit Porto when rainfall is around 0.7 in.

Temperature in Porto by month

If weather is an important factor for your trip to Porto, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 68.0 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 48.2 F).

Reviews of airlines servicing Porto

To help decide which airline to fly from Chicago to Porto, see what other customers have to say about Delta, KLM and SWISS. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

Delta

8.0

Very good

7,920 reviews

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Delta

8.0

Very good

7,920 reviews

Delta

8.0

Very good

7,920 reviews

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

KLM

7.8

Good

1,333 reviews

Delta

8.0

Very good

7,920 reviews

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

SWISS

7.5

Good

1,582 reviews

Delta

8.0

Very good

7,920 reviews

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

United Airlines

7.4

Good

8,685 reviews

Delta

8.0

Very good

7,920 reviews

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Turkish Airlines

7.3

Good

3,775 reviews

Delta

8.0

Very good

7,920 reviews

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Related info for your journey

What airport do you fly into for flights to Porto from Chicago O'Hare Intl?
Porto (OPO), located 6.8 mi from the city center, is the airport you fly into when you book flights from Chicago O'Hare Intl to Porto. 10 airlines have flights to Porto from Chicago O'Hare Intl on a regular basis. Booking flights from Chicago O'Hare Intl to Porto should not be difficult; the airport handles an average of 0 inbound flights from Chicago O'Hare Intl per day.
What are the cheapest airlines flying from Chicago O'Hare Intl Airport to Porto round-trip?
Currently priced at $565, TAP AIR PORTUGAL will fly you from Chicago O'Hare Intl Airport to Porto and back. In addition to TAP AIR PORTUGAL, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from Air Canada and Turkish Airlines - these airlines can fly you to your destination from $610 and $614, respectively. Users have found that TAP AIR PORTUGAL is 19% cheaper than the other options available to this destination.
What are the cheapest airlines to fly from Chicago O'Hare Intl Airport to Porto one-way?
To fly one-way, consider booking your trip with TAP AIR PORTUGAL, which is currently one of the cheapest options available, starting at $461. SWISS flights start at $490 while deals on Scandinavian Airlines start at $510 one-way.
Where are the most common layover locations when flying from Chicago O'Hare Intl Airport to Porto?
Of the flights from Chicago O'Hare Intl Airport to Porto that have layovers, most of them stop in Lisbon.
What are some popular things to do or see while on a layover in Lisbon?
If you're on a layover in Lisbon and looking for things to do, consider visiting Chiado, Praça do Marquês de Pombal, or Centro Cultural de Belém. Travelers on a layover in Lisbon can visit Chiado, Praça do Marquês de Pombal, and Centro Cultural de Belém, by traveling 4.5 mi, 3.6 mi, and 6.8 mi, respectively after landing at Lisbon Humberto Delgado. Travelers can book a car rental at Lisbon Humberto Delgado for about $23 per day to make their sightseeing more efficient.
Where are the least popular layover locations for Chicago O'Hare Intl Airport to Porto flights?
Chicago O'Hare Intl Airport to Porto flights have a layover in Madrid the least frequently.
Can I find deals for flights from O'Hare Intl to Porto that include hotel bookings?
Yes. In addition to deals on O'Hare Intl to Porto flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from O'Hare Intl to Porto?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from O'Hare Intl to Porto.
Can I find deals for business class flights from O'Hare Intl to Porto?
Yes. Cheapflights offers flight deals from O'Hare Intl to Porto by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.
What is the cheapest month to book a flight from Chicago O'Hare Intl Airport to Porto?
Currently, January is the cheapest month in which you can book a flight from Chicago O'Hare Intl Airport to Porto (average of $523). Flying from Chicago O'Hare Intl Airport to Porto in June is currently the most expensive (average of $1,081). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Aveiro

Coimbra

Matosinhos

Arcos de Valdevez

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Alternative routes for O'Hare Intl to Porto

O'Hare Intl to Lisbon flights

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Top 10 airlines flying from O'Hare Intl to Porto

Airline	Cheapest	Average	Flexibility	On-time
TAP AIR PORTUGAL	Cheapest$416	Average$611	FlexibilityNo cancel fee	On-timeN/A
American Airlines	Cheapest$468	Average$736	FlexibilityNo cancel fee	On-time71%
Iberia	Cheapest$472	Average$700	FlexibilityNo cancel fee	On-time77%
British Airways	Cheapest$504	Average$736	FlexibilityNo cancel fee	On-time70%
Delta	Cheapest$514	Average$815	FlexibilityNo cancel fee	On-timeN/A
Lufthansa	Cheapest$535	Average$727	FlexibilityNo cancel fee	On-time76%
SWISS	Cheapest$558	Average$765	FlexibilityNo cancel fee	On-time79%
KLM	Cheapest$563	Average$796	FlexibilityNo cancel fee	On-time75%
United Airlines	Cheapest$584	Average$837	FlexibilityNo cancel fee	On-time69%
Air Canada	Cheapest$646	Average$732	FlexibilityNo cancel fee	On-time67%

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$300+ Cheap flights from O'Hare Intl (ORD) to Porto (OPO)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 7/22. Fares are subject to change and may not be available on all flights or dates of travel.

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Cheapflights Tip: The best prices from Chicago O'Hare Intl to Porto are usually found in February or January, booked 33 days in advance, depart on a Friday or Sunday and return on a Thursday

Cheap flight deals from O'Hare Intl to Porto

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Cheapest flights from O'Hare Intl to PortoExplore the most affordable flight options available from O'Hare Intl to Porto. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 24, 2025.

Explore the most affordable flight options available from O'Hare Intl to Porto. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 24, 2025.

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Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from O'Hare Intl to Porto in April.

Best time to book a flight from O'Hare Intl to Porto

Have a flexible travel schedule? Discover the best time to fly to Porto from O'Hare Intl with our price prediction graph.

Cheapflights Insights

Everything you need to know about your flight from Chicago O'Hare Intl Airport to Porto

How far ahead should I book a flight from Chicago O'Hare Intl Airport to Porto?

Use this chart to determine the optimal time to book a round-trip flight from O'Hare Intl to Porto. Price data was last updated on April 18, 2025.

What is the cheapest month to book a flight from Chicago O'Hare Intl Airport to Porto?

What is the cheapest time of day to fly from ORD to OPO?

Find hourly flight availability from O'Hare Intl to Porto. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated April 24, 2025.

What is the cheapest day to fly from Chicago O'Hare Intl Airport to Porto?

Use this chart to determine the cheapest time to fly round-trip from O'Hare Intl to Porto. Price data was last updated on December 16, 2024.

Rainfall in Porto by month

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Temperature in Porto by month

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Reviews of airlines servicing Porto

Get insights into the airlines that provide service to Porto. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Porto. Reviews last updated April 24, 2025.

To help decide which airline to fly from Chicago to Porto, see what other customers have to say about Delta, KLM and SWISS. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

Find useful and relevant information for your journey from O'Hare Intl to Porto. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

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Where are the most common layover locations when flying from Chicago O'Hare Intl Airport to Porto?

What are some popular things to do or see while on a layover in Lisbon?

Where are the least popular layover locations for Chicago O'Hare Intl Airport to Porto flights?

Can I find deals for flights from O'Hare Intl to Porto that include hotel bookings?

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What is the cheapest month to book a flight from Chicago O'Hare Intl Airport to Porto?

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Alternative routes for O'Hare Intl to Porto

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Top 10 airlines flying from O'Hare Intl to Porto

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Cheapest flights from O'Hare Intl to Porto
Explore the most affordable flight options available from O'Hare Intl to Porto. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 24, 2025.