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

$333+ Cheap flights from Porto (OPO) to O'Hare Intl (ORD)

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 3/22. Fares are subject to change and may not be available on all flights or dates of travel.
OPO — ORD
Dec 28 — Jan 41
Sat 12/28
Sat 1/4
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 December 23, 2024.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$529
(Mytrip)

One-way from

$333
(Kiwi.com)

Popular in

April

Cheapest in

February

Average price

$744
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
One-way flight from Porto to Chicago O'Hare Intl
Search Deals
High demand for flights, 17% potential price rise
Search Deals
Best time to find cheap flights, 9% potential price drop
Search Deals
Average for round-trip flights in December 2024
Search Deals

Find flight deals from Porto to O'Hare Intl

Best flights from Porto to O'Hare Intl
Discover carefully curated flight deals from Porto to O'Hare Intl that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated December 23, 2024.

This Mytrip deal was found by Cheapflights users on 12/22. 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.
Thu 2/66:10 amOPO - ORD
2 stops17h 10mMultiple Airlines
Thu 2/136:30 pmORD - OPO
2 stops22h 30mMultiple Airlines
Deal found 12/22$529
This oojo deal was found by Cheapflights users on 12/22. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/115:55 pmOPO - ORD
1 stop28h 15mScandinavian Airlines
Mon 4/217:15 pmORD - OPO
1 stop34h 00mScandinavian Airlines
Deal found 12/22$596
This Cheapflightsfares deal was found by Cheapflights users on 12/22. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 1/158:20 amOPO - ORD
1 stop12h 10mIberia
Mon 1/204:45 pmORD - OPO
1 stop17h 15mIberia
Deal found 12/22$603
This Delta deal was found by Cheapflights users on 12/23. 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.
Fri 1/176:15 amOPO - ORD
2 stops20h 38mDelta
Thu 1/301:40 pmORD - OPO
2 stops15h 10mDelta
Deal found 12/23$619
This American Airlines deal was found by Cheapflights users on 12/23. 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.
Thu 6/128:15 amOPO - ORD
1 stop16h 30mAmerican Airlines
Tue 6/242:45 pmORD - OPO
2 stops14h 55mAmerican Airlines
Deal found 12/23$623
This KLM deal was found by Cheapflights users on 12/22. 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.
Thu 6/124:20 pmOPO - ORD
1 stop27h 50mKLM
Tue 6/244:20 pmORD - OPO
1 stop17h 15mKLM
Deal found 12/22$750
This SWISS deal was found by Cheapflights users on 12/23. 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.
Thu 6/1212:15 pmOPO - ORD
1 stop29h 55mSWISS
Tue 6/242:20 pmORD - OPO
1 stop15h 05mSWISS
Deal found 12/23$760
This Booking.com deal was found by Cheapflights users on 12/21. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/106:00 amOPO - ORD
2 stops22h 06mAir Canada
Fri 4/1810:45 amORD - OPO
2 stops25h 45mAir Canada
Deal found 12/21$761

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 December 23, 2024.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

PortoChicago

OPO - ORD

OPOORD

Porto

Thu 2/6

6:10 am-5:20 pm

2 stops17h 10m

Chicago O'Hare Intl

Thu 2/13

6:30 pm-11:00 pm

2 stops22h 30m

$529

PortoChicago

OPO - ORD

OPOORD

Porto

Fri 4/11

5:55 pm-4:10 pm

1 stop28h 15m

Chicago O'Hare Intl

Mon 4/21

7:15 pm-11:15 am

1 stop34h 00m

$596

PortoChicago

OPO - ORD

OPOORD

Porto

Wed 1/15

8:20 am-2:30 pm

1 stop12h 10m

Chicago O'Hare Intl

Mon 1/20

4:45 pm-4:00 pm

1 stop17h 15m

$603

PortoChicago

OPO - ORD

OPOORD

Porto

Fri 1/17

6:15 am-8:53 pm

2 stops20h 38m

Chicago O'Hare Intl

Thu 1/30

5:20 pm-10:50 am

1 stop11h 30m

$619

PortoChicago

OPO - ORD

OPOORD

Porto

Thu 6/12

8:15 am-6:45 pm

1 stop16h 30m

Chicago O'Hare Intl

Tue 6/24

2:45 pm-11:40 am

2 stops14h 55m

$623

PortoChicago

OPO - ORD

OPOORD

Porto

Thu 6/12

4:20 pm-2:10 pm

1 stop27h 50m

Chicago O'Hare Intl

Tue 6/24

4:20 pm-3:35 pm

1 stop17h 15m

$750

PortoChicago

OPO - ORD

OPOORD

Porto

Thu 6/12

12:15 pm-12:10 pm

1 stop29h 55m

Chicago O'Hare Intl

Tue 6/24

2:20 pm-11:25 am

1 stop15h 05m

$760

PortoChicago

OPO - ORD

OPOORD

Porto

Thu 4/10

6:00 am-10:06 pm

2 stops22h 06m

Chicago O'Hare Intl

Fri 4/18

10:45 am-6:30 pm

2 stops25h 45m

$761

PortoChicago

OPO - ORD

OPOORD

Porto

Sat 3/22

6:10 pm-3:56 pm

2 stops50h 46m

$333

PortoChicago

OPO - ORD

OPOORD

Porto

Thu 3/20

8:00 pm-4:30 pm

1 stop25h 30m

$534

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/22

Showing 1-10 of 14 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 December.
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 $317). 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 December 23, 2024.
Delta
8.0
Very good
8,588 reviews

Entertainment

7.9

Crew

8.6

Comfort

8.0

Food

7.3

Overall

8.0

Boarding

8.2

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
8,588 reviews
Delta
8.0
Very good
8,588 reviews

Entertainment

7.9

Crew

8.6

Comfort

8.0

Food

7.3

Overall

8.0

Boarding

8.2

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
1,345 reviews
Delta
8.0
Very good
8,588 reviews

Entertainment

7.9

Crew

8.6

Comfort

8.0

Food

7.3

Overall

8.0

Boarding

8.2

Reviews

1 / 10

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

SWISS
7.6
Good
1,605 reviews
Delta
8.0
Very good
8,588 reviews

Entertainment

7.9

Crew

8.6

Comfort

8.0

Food

7.3

Overall

8.0

Boarding

8.2

Reviews

1 / 10

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

Brussels Airlines
7.4
Good
352 reviews
Delta
8.0
Very good
8,588 reviews

Entertainment

7.9

Crew

8.6

Comfort

8.0

Food

7.3

Overall

8.0

Boarding

8.2

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
3,902 reviews
Delta
8.0
Very good
8,588 reviews

Entertainment

7.9

Crew

8.6

Comfort

8.0

Food

7.3

Overall

8.0

Boarding

8.2

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 Scandinavian Airlines is currently your cheapest option to Chicago O'Hare Intl Airport, with prices starting at $596. Additional round-trip tickets that might be worth considering are offered by Iberia and Delta, with the lowest prices starting at $603 and $619, respectively. You may be able to fly from Porto to Chicago O'Hare Intl Airport for 37% 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 TAP AIR PORTUGAL, which is currently one of the cheapest options available, starting at $534. Turkish Airlines flights start at $559 while deals on British Airways start at $592 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 $317). 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

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 December 23, 2024.
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.