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O'Hare Intl

$384+ 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 5/2. Fares are subject to change and may not be available on all flights or dates of travel.
OPO — ORD
Jan 11 — Jan 181
Sun 1/11
Sun 1/18
1 adult, Economy
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Cheap 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 December 12, 2025.

This Air France deal was found by Cheapflights users on 12/11. 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 Air France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/2511:15 amOPO - ORD
1 stop33h 05mMultiple Airlines
Wed 1/75:20 pmORD - OPO
1 stop11h 10mMultiple Airlines
Deal found 12/11$808
This Delta deal was found by Cheapflights users on 12/11. 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.
Sat 12/276:00 amOPO - ORD
2 stops20h 36mDelta
Tue 5/55:10 pmORD - OPO
1 stop16h 20mDelta
Deal found 12/11$813
This Lufthansa deal was found by Cheapflights users on 12/10. 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 12/226:00 amOPO - ORD
1 stop15h 20mLufthansa
Thu 1/16:00 pmORD - OPO
1 stop12h 50mLufthansa
Deal found 12/10$815
This United Airlines deal was found by Cheapflights users on 12/10. 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.
Mon 12/226:00 amOPO - ORD
1 stop15h 20mUnited Airlines
Thu 1/111:00 amORD - OPO
2 stops18h 40mUnited Airlines
Deal found 12/10$816
This United Airlines deal was found by Cheapflights users on 12/11. 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.
Wed 12/2412:30 pmOPO - ORD
1 stop13h 35mUnited Airlines
Fri 1/910:54 amORD - OPO
2 stops21h 51mUnited Airlines
Deal found 12/11$817
This United Airlines deal was found by Cheapflights users on 12/11. 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.
Wed 12/246:00 amOPO - ORD
2 stops30h 30mUnited Airlines
Wed 1/710:35 amORD - OPO
2 stops19h 05mUnited Airlines
Deal found 12/11$822
This FlightHub deal was found by Cheapflights users on 12/11. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/2310:50 amOPO - ORD
1 stop29h 15mTurkish Airlines
Tue 1/68:20 pmORD - OPO
1 stop36h 50mTurkish Airlines
Deal found 12/11$827
This Lufthansa deal was found by Cheapflights users on 12/11. 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.
Wed 12/2412:30 pmOPO - ORD
1 stop13h 35mLufthansa
Thu 1/810:35 pmORD - OPO
1 stop17h 50mLufthansa
Deal found 12/11$829
This Delta deal was found by Cheapflights users on 12/11. 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.
Thu 12/2511:15 amOPO - ORD
1 stop33h 05mDelta
Thu 1/810:29 amORD - OPO
2 stops17h 56mDelta
Deal found 12/11$830
This Delta deal was found by Cheapflights users on 12/11. 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 12/266:30 amOPO - ORD
1 stop13h 50mDelta
Sat 1/105:20 pmORD - OPO
1 stop11h 10mDelta
Deal found 12/11$831
This KAYAK deal was found by Cheapflights users on 12/11. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/224:10 pmOPO - ORD
1 stop23h 55mTurkish Airlines
Fri 1/98:20 pmORD - OPO
1 stop31h 35mTurkish Airlines
Deal found 12/11$832

Find 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 12, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$571
(Mytrip)

One-way from

$384
(Kiwi.com)

Popular in

September

Cheapest in

February

Average price

$904
Provider with most accurate pricing for Porto-Chicago O'Hare Intl flight deals.
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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
Highest demand for flights based on searches. 12% potential increase in price ($127 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($31 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals

Cheapflights Fare Finder

 
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 12, 2025.
Use the filters below to find and compare flights from Porto to Chicago O'Hare Intl Airport that are best for you.

Fly from

Porto

Fly to

O'Hare Intl

Route

Depart

Return

Price

PortoChicago

OPO - ORD

OPOORD

Porto

Thu 1/15

6:00 pm-3:25 pm

1 stop27h 25m

Chicago O'Hare Intl

Wed 1/28

7:10 pm-10:00 pm

1 stop20h 50m

$583

PortoChicago

OPO - ORD

OPOORD

Porto

Sun 1/25

6:55 am-2:45 pm

1 stop13h 50m

Chicago O'Hare Intl

Sun 2/1

8:25 pm-6:05 pm

1 stop15h 40m

$599

PortoChicago

OPO - ORD

OPOORD

Porto

Thu 1/15

1:00 pm-4:45 pm

2 stops33h 45m

Chicago O'Hare Intl

Wed 1/28

7:20 pm-9:15 pm

2 stops19h 55m

$614

PortoChicago

OPO - ORD

OPOORD

Porto

Wed 2/18

8:55 am-12:08 am

2 stops21h 13m

Chicago O'Hare Intl

Sun 2/22

6:17 pm-11:55 am

1 stop11h 38m

$733

PortoChicago

OPO - ORD

OPOORD

Porto

Wed 3/18

8:10 pm-3:55 pm

1 stop24h 45m

Chicago O'Hare Intl

Sat 3/21

12:05 pm-8:10 am

2 stops39h 05m

$762

PortoChicago

OPO - ORD

OPOORD

Porto

Wed 2/18

5:00 am-2:20 pm

1 stop15h 20m

Chicago O'Hare Intl

Sun 2/22

5:20 pm-10:30 am

1 stop11h 10m

$766

PortoChicago

OPO - ORD

OPOORD

Porto

Sun 1/25

11:15 am-2:20 pm

1 stop33h 05m

Chicago O'Hare Intl

Sun 2/1

12:30 pm-10:30 am

2 stops16h 00m

$767

PortoChicago

OPO - ORD

OPOORD

Porto

Thu 3/19

6:35 pm-7:45 pm

2 stops30h 10m

Chicago O'Hare Intl

Sat 3/21

5:53 pm-1:10 pm

1 stop14h 17m

$769

PortoChicago

OPO - ORD

OPOORD

Porto

Thu 1/15

6:00 am-3:20 pm

1 stop15h 20m

Chicago O'Hare Intl

Wed 1/28

6:00 pm-1:15 pm

1 stop13h 15m

$779

PortoChicago

OPO - ORD

OPOORD

Porto

Sat 5/2

10:05 pm-4:43 pm

2 stops48h 38m

$384

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/10

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*1 star
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 eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Porto-Chicago O'Hare Intl Airport flight deals on Cheapflights vs. eDreams >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 eDreams the most. eDreams 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.

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 0 different airlines.

  • How long is the flight from Porto to Chicago O'Hare Intl Airport?

    There are many flights that can get you from Porto to Chicago O'Hare Intl Airport in 27h 25m. Fly via TAP AIR PORTUGAL to get the fastest option. Airlines will cover a distance of 3931 mi.

  • 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 American Airlines, which is currently one of the cheapest options available, starting at $484. Iberia flights start at $484 while deals on TAP AIR PORTUGAL start at $505 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.

See more FAQs

Traveling to a place near Chicago O'Hare Intl Airport?

Book flights to Chicago O'Hare Intl Airport if you plan to visit one of these locations
Schaumburg
Rosemont
Gurnee
Elgin
Naperville
Hoffman Estates
Beloit
Delavan
Oak Brook
Downers Grove
Des Plaines
Elk Grove Village
Skokie
Lake Geneva
Bridgeview
Warrenville
Waukegan
Aurora
Kenosha
Evanston

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