HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
O'Hare Intl

$449+ Cheap flights from Porto (OPO) to O'Hare Intl (ORD)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 3/10. Fares are subject to change and may not be available on all flights or dates of travel.
OPO — ORD
Jan 26 — Feb 21
Sun 1/26
Sun 2/2
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Porto to O'Hare Intl with Cheapflights

1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”
2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.
3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap flight deals from Porto to O'Hare Intl

Discover tips and strategies to find the most affordable flight options for your journey from Porto (OPO) to O'Hare Intl (ORD). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated January 21, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$449
(Mytrip)

Popular in

April

Cheapest in

February

Average price

$1,115
Provider with most accurate pricing for Porto-Chicago O'Hare Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for Porto-Chicago O'Hare Intl flights.
Search Deals
From Porto to Chicago O'Hare Intl
Search Deals
Highest demand for flights based on searches. 17% potential increase in price ($204 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 9% potential price decrease ($85 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 2025
Search Deals

Find flight deals from Porto to O'Hare Intl

Cheapest flights from Porto to O'Hare Intl
Explore the most affordable flight options available from Porto to O'Hare Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 21, 2025.

This Mytrip deal was found by Cheapflights users on 1/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/109:55 pmOPO - ORD
2 stops24h 20mMultiple Airlines
Mon 3/173:35 pmORD - OPO
2 stops17h 20mMultiple Airlines
Deal found 1/21$449
This Gotogate deal was found by Cheapflights users on 1/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/66:00 pmOPO - ORD
1 stop27h 30mTAP AIR PORTUGAL
Wed 2/197:15 pmORD - OPO
1 stop30h 30mTAP AIR PORTUGAL
Deal found 1/21$580
This Delta deal was found by Cheapflights users on 1/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/106:20 amOPO - ORD
1 stop14h 10mDelta
Mon 3/176:20 pmORD - OPO
1 stop11h 30mDelta
Deal found 1/20$606
This KLM deal was found by Cheapflights users on 1/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/245:00 amOPO - ORD
1 stop15h 30mKLM
Mon 12/15:20 pmORD - OPO
1 stop11h 30mKLM
Deal found 1/21$612
This American Airlines deal was found by Cheapflights users on 1/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/38:15 amOPO - ORD
2 stops29h 59mAmerican Airlines
Sat 5/104:40 pmORD - OPO
2 stops17h 15mAmerican Airlines
Deal found 1/20$622
This British Airways deal was found by Cheapflights users on 1/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/139:20 pmOPO - ORD
1 stop20h 30mBritish Airways
Mon 4/2110:20 pmORD - OPO
1 stop15h 30mBritish Airways
Deal found 1/21$670
This Iberia deal was found by Cheapflights users on 1/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/128:35 pmOPO - ORD
1 stop28h 10mIberia
Sun 4/204:30 pmORD - OPO
1 stop17h 25mIberia
Deal found 1/21$677
This SWISS deal was found by Cheapflights users on 1/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure SWISS is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/127:20 pmOPO - ORD
1 stop22h 50mSWISS
Sun 4/202:20 pmORD - OPO
1 stop15h 05mSWISS
Deal found 1/21$731
This Turkish Airlines deal was found by Cheapflights users on 1/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/134:50 pmOPO - ORD
1 stop23h 00mTurkish Airlines
Tue 4/157:50 pmORD - OPO
1 stop31h 55mTurkish Airlines
Deal found 1/21$771
This Lufthansa deal was found by Cheapflights users on 1/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Lufthansa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/146:15 amOPO - ORD
1 stop18h 00mLufthansa
Fri 4/1810:30 pmORD - OPO
1 stop18h 15mLufthansa
Deal found 1/21$796
This Brussels Airlines deal was found by Cheapflights users on 1/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Brussels Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/114:50 pmOPO - ORD
2 stops24h 50mBrussels Airlines
Mon 4/216:05 pmORD - OPO
2 stops15h 55mBrussels Airlines
Deal found 1/20$852
This United Airlines deal was found by Cheapflights users on 1/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 6/299:00 amOPO - ORD
2 stops18h 45mUnited Airlines
Sun 7/611:00 amORD - OPO
2 stops16h 45mUnited Airlines
Deal found 1/21$1,197

Find flights from Porto to O'Hare Intl within your budget

Customize your flight search to find flights from Porto to O'Hare Intl that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated January 21, 2025.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

PortoChicago

OPO - ORD

OPOORD

Porto

Mon 3/10

9:55 pm-5:15 pm

2 stops24h 20m

Chicago O'Hare Intl

Mon 3/17

3:35 pm-1:55 pm

2 stops17h 20m

$449

PortoChicago

OPO - ORD

OPOORD

Porto

Thu 2/6

6:00 pm-3:30 pm

1 stop27h 30m

Chicago O'Hare Intl

Wed 2/19

7:15 pm-7:45 am

1 stop30h 30m

$580

PortoChicago

OPO - ORD

OPOORD

Porto

Mon 3/10

6:20 am-3:30 pm

1 stop14h 10m

Chicago O'Hare Intl

Mon 3/17

6:20 pm-10:50 am

1 stop11h 30m

$606

PortoChicago

OPO - ORD

OPOORD

Porto

Sat 5/3

6:40 am-2:10 pm

1 stop13h 30m

Chicago O'Hare Intl

Sat 5/10

5:15 pm-3:30 pm

1 stop16h 15m

$613

PortoChicago

OPO - ORD

OPOORD

Porto

Sat 5/3

8:15 am-8:14 am

2 stops29h 59m

Chicago O'Hare Intl

Sat 5/10

4:40 pm-3:55 pm

2 stops17h 15m

$622

PortoChicago

OPO - ORD

OPOORD

Porto

Sun 4/13

9:20 pm-11:50 am

1 stop20h 30m

Chicago O'Hare Intl

Mon 4/21

10:20 pm-7:50 pm

1 stop15h 30m

$670

PortoChicago

OPO - ORD

OPOORD

Porto

Sat 4/12

8:35 pm-6:45 pm

1 stop28h 10m

Chicago O'Hare Intl

Sun 4/20

4:30 pm-3:55 pm

1 stop17h 25m

$677

PortoChicago

OPO - ORD

OPOORD

Porto

Sat 4/12

7:20 pm-12:10 pm

1 stop22h 50m

Chicago O'Hare Intl

Sat 4/19

2:20 pm-11:25 am

1 stop15h 05m

$731

PortoChicago

OPO - ORD

OPOORD

Porto

Sun 4/13

10:45 am-9:50 am

1 stop29h 05m

Chicago O'Hare Intl

Thu 4/17

7:50 pm-9:45 am

1 stop31h 55m

$771

PortoChicago

OPO - ORD

OPOORD

Porto

Mon 4/14

6:15 am-6:15 pm

1 stop18h 00m

Chicago O'Hare Intl

Sat 4/19

10:30 pm-10:45 pm

1 stop18h 15m

$796

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/21

Showing 1-10 of 20 results
1
2

Compare providers for flights from Porto to O'Hare Intl

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 Porto to O'Hare Intl in January.
ProviderPrice AccuracyTrust Score*
FlightHubPrice Accuracy3 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust 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 Porto-Chicago O'Hare Intl Airport flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Porto-Chicago O'Hare Intl Airport flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Porto-Chicago O'Hare Intl Airport flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Porto-Chicago O'Hare Intl Airport flights, Cheapflights users trust FlightHub the most. FlightHub 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 Porto-Chicago O'Hare Intl Airport 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 Porto to O'Hare Intl

Have a flexible travel schedule? Discover the best time to fly to O'Hare Intl from Porto 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.

Travel insights for flights from Porto to O'Hare Intl

Get recent, data-driven insights about flights from Porto to O'Hare Intl including ideal travel times, pricing trends, and more.

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

Currently, August is the cheapest month in which you can book a flight from Porto to Chicago O'Hare Intl Airport (average of $245). Flying from Porto to Chicago O'Hare Intl Airport in March is currently the most expensive (average of $320). 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.

Rainfall in O'Hare Intl by month

Plan your trip to O'Hare Intl by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Chicago O'Hare Intl Airport ranges from 1.7 - 4.9 inches per month. August is typically the wettest month, when rainfall can reach 4.9 in. January is typically the driest time to visit Chicago O'Hare Intl Airport when rainfall is around 1.7 in.

Temperature in O'Hare Intl by month

Plan your trip to O'Hare Intl by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Chicago O'Hare Intl Airport, 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 73.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 23.0 F).

Reviews of airlines servicing O'Hare Intl

Get insights into the airlines that provide service to O'Hare Intl. 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 O'Hare Intl. Reviews last updated January 21, 2025.
Delta
8.0
Very good
8,521 reviews

Crew

8.6

Entertainment

7.9

Overall

8.0

Boarding

8.2

Food

7.3

Comfort

8.0

Reviews

1 / 10

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Delta
8.0
Very good
8,521 reviews
Delta
8.0
Very good
8,521 reviews

Crew

8.6

Entertainment

7.9

Overall

8.0

Boarding

8.2

Food

7.3

Comfort

8.0

Reviews

1 / 10

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

KLM
7.8
Good
1,341 reviews
Delta
8.0
Very good
8,521 reviews

Crew

8.6

Entertainment

7.9

Overall

8.0

Boarding

8.2

Food

7.3

Comfort

8.0

Reviews

1 / 10

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

SWISS
7.5
Good
1,600 reviews
Delta
8.0
Very good
8,521 reviews

Crew

8.6

Entertainment

7.9

Overall

8.0

Boarding

8.2

Food

7.3

Comfort

8.0

Reviews

1 / 10

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

United Airlines
7.4
Good
8,984 reviews
Delta
8.0
Very good
8,521 reviews

Crew

8.6

Entertainment

7.9

Overall

8.0

Boarding

8.2

Food

7.3

Comfort

8.0

Reviews

1 / 10

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Turkish Airlines
7.3
Good
3,931 reviews
Delta
8.0
Very good
8,521 reviews

Crew

8.6

Entertainment

7.9

Overall

8.0

Boarding

8.2

Food

7.3

Comfort

8.0

Reviews

1 / 10

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Related info for your journey

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

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

    If you book a flight to Chicago O'Hare Intl from Porto, you will be flying from Porto, which is the city’s only airport. Porto (OPO) is located 6.8 mi from the center of Porto. There are 0 flights from Porto to Chicago O'Hare Intl per day from 1 airline.

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

    Flying on TAP AIR PORTUGAL is currently your cheapest option to Chicago O'Hare Intl Airport, with prices starting at $580. Additional round-trip tickets that might be worth considering are offered by Delta and KLM, with the lowest prices starting at $606 and $613, respectively. You may be able to fly from Porto to Chicago O'Hare Intl Airport for 39% less than the average price by searching for these airlines.

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

    To fly one-way, consider booking your trip with Turkish Airlines, which is currently one of the cheapest options available, starting at $554. British Airways flights start at $618 while deals on Air Serbia start at $623 one-way.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Porto to O'Hare Intl 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 Porto to Chicago O'Hare Intl Airport?

    Currently, August is the cheapest month in which you can book a flight from Porto to Chicago O'Hare Intl Airport (average of $245). Flying from Porto to Chicago O'Hare Intl Airport in March is currently the most expensive (average of $320). 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

Traveling to a place near Porto?

Book flights to Porto if you plan to visit one of these locations
Naperville
Rosemont
Beloit
Racine
Hoffman Estates
Schaumburg
Rockford
Skokie
Tinley Park
Arlington Heights
Northbrook
Evanston
Des Plaines
Orland Park
Merrillville
Kenosha
Lake Geneva
New Buffalo
Gurnee
Willowbrook

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Porto to O'Hare Intl

See prices for flight routes from nearby airports that may be better suited for you.
Lisbon to O'Hare Intl flights
Faro to O'Hare Intl flights

Top airline flying from Porto to O'Hare Intl

Discover the top airline that operate flights from Porto to O'Hare Intl. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated January 21, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$846Average$879FlexibilityNo cancel feeOn-time69%
100% Free
Cheapflights is completely free to use, so you can start saving the moment you arrive.
Book with Flexibility
Our users can plan ahead with confidence and find flights with no change fees
Travel Smart
Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.