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

$385+ Cheap flights from Portugal 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 5/25. Fares are subject to change and may not be available on all flights or dates of travel.
LIS — ORD
May 18 — May 251
Mon 5/18
Mon 5/25
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Portugal 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 Portugal to O'Hare Intl

Cheapest flights from Portugal to O'Hare Intl
Explore the most affordable flight options available from Portugal to O'Hare Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 18, 2026.

This Scandinavian Airlines deal was found by Cheapflights users on 4/13. 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 Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/34:55 pm
LIS
-
ORD
1 stop29h 50m
Scandinavian Airlines
Mon 12/77:20 pm
ORD
-
LIS
1 stop14h 45m
Scandinavian Airlines
Deal found 4/13$633
This Trip.com deal was found by Cheapflights users on 4/15. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/304:55 pm
LIS
-
ORD
1 stop29h 50m
Scandinavian Airlines
Mon 12/287:20 pm
ORD
-
LIS
1 stop14h 45m
Scandinavian Airlines
Deal found 4/15$701
This Scandinavian Airlines deal was found by Cheapflights users on 4/17. 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 Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/114:55 pm
LIS
-
ORD
1 stop29h 50m
Scandinavian Airlines
Mon 12/147:20 pm
ORD
-
LIS
1 stop14h 45m
Scandinavian Airlines
Deal found 4/17$717
This Scandinavian Airlines deal was found by Cheapflights users on 4/15. 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 Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/304:55 pm
LIS
-
ORD
1 stop29h 50m
Scandinavian Airlines
Tue 12/297:20 pm
ORD
-
LIS
1 stop14h 45m
Scandinavian Airlines
Deal found 4/15$718
This Justfly.com deal was found by Cheapflights users on 4/18. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/205:35 pm
OPO
-
ORD
1 stop29h 10m
Scandinavian Airlines
Sun 12/67:00 am
ORD
-
OPO
2 stops22h 00m
Scandinavian Airlines
Deal found 4/18$744
This Scandinavian Airlines deal was found by Cheapflights users on 4/14. 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 Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/299:15 pm
LIS
-
ORD
1 stop24h 55m
Scandinavian Airlines
Tue 6/27:00 am
ORD
-
LIS
2 stops26h 35m
Scandinavian Airlines
Deal found 4/14$772
This Cheapflightsfares deal was found by Cheapflights users on 4/17. 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.
Sat 5/1610:55 pm
LIS
-
ORD
1 stop23h 15m
Scandinavian Airlines
Tue 5/267:15 pm
ORD
-
LIS
1 stop14h 20m
Scandinavian Airlines
Deal found 4/17$776
This Scandinavian Airlines deal was found by Cheapflights users on 4/15. 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 Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/304:55 pm
LIS
-
ORD
1 stop29h 50m
Scandinavian Airlines
Wed 12/307:10 pm
ORD
-
LIS
1 stop31h 50m
Scandinavian Airlines
Deal found 4/15$777
This Kiwi.com deal was found by Cheapflights users on 4/17. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/307:00 am
OPO
-
ORD
1 stop13h 25m
Multiple Airlines
Tue 5/54:55 pm
ORD
-
OPO
1 stop18h 55m
Multiple Airlines
Deal found 4/17$825
This Mytrip deal was found by Cheapflights users on 4/15. 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 5/147:15 am
OPO
-
ORD
2 stops35h 20m
Multiple Airlines
Wed 5/278:45 am
ORD
-
OPO
2 stops20h 50m
Multiple Airlines
Deal found 4/15$833
This Mytrip deal was found by Cheapflights users on 4/18. 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.
Wed 4/294:50 pm
OPO
-
ORD
2 stops27h 25m
Multiple Airlines
Sun 5/34:20 pm
ORD
-
OPO
2 stops23h 00m
Multiple Airlines
Deal found 4/18$854
This Cheapflightsfares deal was found by Cheapflights users on 4/18. 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.
Fri 11/207:00 am
OPO
-
ORD
1 stop14h 30m
TAP AIR PORTUGAL
Sun 12/68:10 pm
ORD
-
OPO
1 stop11h 20m
TAP AIR PORTUGAL
Deal found 4/18$869

Find flight deals from Portugal to O'Hare Intl

Keep the following information in mind while searching for Portugal to O'Hare Intl flight deals. Data was last updated April 18, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$772
(Scandinavian Airlines)

One-way from

$385
(Kiwi.com)

Popular in

January

Cheapest in

February

Average price

$839

Good one-way deal

$683 or less
Provider with most accurate pricing for Lisbon Humberto Delgado-Chicago (CHI) flight deals.
Search Deals
Provider most trusted by Cheapflights users for Lisbon Humberto Delgado-Chicago (CHI) flights.
Search Deals
From Portugal to Chicago O'Hare Intl
Search Deals
One-way flight from Portugal to Chicago O'Hare Intl
Search Deals
High demand for flights, 4% potential price rise
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($27 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in April 2026
Search Deals
Price to beat on a one-way flight from Portugal to Chicago O'Hare Intl.
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Portugal 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 April 18, 2026.
Use the filters below to find and compare flights from Portugal to Chicago O'Hare Intl Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

LisbonChicago

LIS - ORD

LISORD

Lisbon Humberto Delgado

Fri 5/1

4:05 pm-3:10 pm

2 stops29h 05m

Chicago O'Hare Intl

Tue 5/5

4:20 pm-10:50 pm

2 stops24h 30m

$886

PortoChicago

OPO - ORD

OPOORD

Porto

Thu 5/14

6:00 am-7:55 pm

1 stop19h 55m

Chicago O'Hare Intl

Wed 5/27

1:15 pm-6:55 am

1 stop11h 40m

$906

PortoChicago

OPO - ORD

OPOORD

Porto

Fri 5/29

2:15 pm-3:10 pm

1 stop30h 55m

Chicago O'Hare Intl

Fri 6/5

9:50 pm-1:25 pm

1 stop33h 35m

$906
Quickest round-trip

PortoChicago

OPO - ORD

OPOORD

Porto

Tue 5/12

6:00 am-2:50 pm

1 stop14h 50m

Chicago O'Hare Intl

Mon 5/25

4:40 pm-9:45 am

1 stop11h 05m

$911

PortoChicago

OPO - ORD

OPOORD

Porto

Mon 5/11

6:00 am-2:50 pm

1 stop14h 50m

Chicago O'Hare Intl

Tue 5/26

6:00 am-6:15 am

1 stop18h 15m

$912

PortoChicago

OPO - ORD

OPOORD

Porto

Thu 5/14

5:00 am-6:05 pm

2 stops19h 05m

Chicago O'Hare Intl

Wed 5/27

5:19 pm-3:25 pm

2 stops16h 06m

$917

PortoChicago

OPO - ORD

OPOORD

Porto

Wed 4/29

11:45 am-2:15 pm

1 stop32h 30m

Chicago O'Hare Intl

Sun 5/3

5:10 pm-10:00 pm

1 stop22h 50m

$920

LisbonChicago

LIS - ORD

LISORD

Lisbon Humberto Delgado

Thu 5/28

3:50 pm-12:35 pm

1 stop26h 45m

Chicago O'Hare Intl

Wed 6/3

7:05 pm-11:25 pm

1 stop22h 20m

$921

PortoChicago

OPO - ORD

OPOORD

Porto

Wed 4/29

5:00 am-2:30 pm

1 stop15h 30m

Chicago O'Hare Intl

Sun 5/3

5:04 pm-6:10 pm

2 stops19h 06m

$923

PortoChicago

OPO - ORD

OPOORD

Porto

Fri 5/1

8:15 pm-2:15 pm

1 stop24h 00m

Chicago O'Hare Intl

Tue 5/5

1:36 pm-10:55 am

2 stops15h 19m

$923

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/15

Showing 1-10 of 45 resultsSorted by cheapest first
1
2
3
...
5

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

Have a flexible travel schedule? Discover the best time to fly to O'Hare Intl from Portugal 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 Portugal to Chicago O'Hare Intl Airport

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

Currently, February is the cheapest month in which you can book a flight from Portugal to Chicago O'Hare Intl Airport (average of $473). Flying from Portugal to Chicago O'Hare Intl Airport in March is currently the most expensive (average of $880). 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 PT to ORD?

Find hourly flight availability from Portugal to O'Hare Intl. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated April 18, 2026.

When flying from Portugal to Chicago O'Hare Intl Airport, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

How often are flights from Portugal to Chicago delayed?

About 26% of weekly flights between Portugal and Chicago have experienced delays in the past year, with the average delay time being 129 minutes.

What is the most punctual flight time for Portugal to Chicago flights?

Historically, flights departing in the early afternoon are less likely to be delayed, whereas flights leaving in the morning tend to experience delays more often.

What day of the week experiences the fewest flight delays on this route?

Monday tends to have the lowest number of delays on this route, whereas Saturday has historically faced a higher average of delays compared to other days of the week.

Which airline has the best punctuality record on Portugal to Chicago flights?

Over the last year, TAP AIR PORTUGAL have had the lowest number of delays on this route, with just 26% of flights being delayed.

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 April 18, 2026.
Get a feel of what it's like to fly with United Airlines and TAP AIR PORTUGAL from Portugal to Chicago O'Hare Intl Airport by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
9,603 reviews

Comfort

7.3

Food

6.6

Entertainment

7.1

Crew

8.1

Overall

7.4

Boarding

7.7

Reviews

1 / 20
8.0
Excellent

Anonymous,Oct 2025

YUL - ORD

Crew and customer service are 5 stars. I had a lot of luggage for a very long trip and they were nothing but helpful and found solutions to every problem. It was my first time flying with United, and they really are the friendly skies. Leg room however, on 2/3 flights was terrible. Same for entertainment: There was only a seat-mounted screen on 1/3 flights. It would have been nice to have on the longest leg of the journey.
United Airlines
7.4
Good
9,603 reviews
United Airlines
7.4
Good
9,603 reviews

Comfort

7.3

Food

6.6

Entertainment

7.1

Crew

8.1

Overall

7.4

Boarding

7.7

Reviews

1 / 20
8.0
Excellent

Anonymous,Oct 2025

YUL - ORD

Crew and customer service are 5 stars. I had a lot of luggage for a very long trip and they were nothing but helpful and found solutions to every problem. It was my first time flying with United, and they really are the friendly skies. Leg room however, on 2/3 flights was terrible. Same for entertainment: There was only a seat-mounted screen on 1/3 flights. It would have been nice to have on the longest leg of the journey.
TAP AIR PORTUGAL
7.1
Good
2,209 reviews
United Airlines
7.4
Good
9,603 reviews

Comfort

7.3

Food

6.6

Entertainment

7.1

Crew

8.1

Overall

7.4

Boarding

7.7

Reviews

1 / 20
8.0
Excellent

Anonymous,Oct 2025

YUL - ORD

Crew and customer service are 5 stars. I had a lot of luggage for a very long trip and they were nothing but helpful and found solutions to every problem. It was my first time flying with United, and they really are the friendly skies. Leg room however, on 2/3 flights was terrible. Same for entertainment: There was only a seat-mounted screen on 1/3 flights. It would have been nice to have on the longest leg of the journey.

Related info for your journey

Find useful and relevant information for your journey from Portugal 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.

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

    Airlines like LOT, United Airlines, and Scandinavian Airlines fly from Portugal to Chicago O'Hare Intl Airport in about 14h 55m. The time it takes to get you to your destination can typically vary by up to 20h 45m. The distance from Portugal to Chicago O'Hare Intl Airport is about 3931 mi. This flight may include one or multiple stops.

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

    To fly one-way, consider booking your trip with Finnair, which is currently one of the cheapest options available, starting at $367. American Airlines flights start at $484 while deals on Iberia start at $484 one-way.

  • What are the most popular routes from Portugal to Chicago O'Hare Intl Airport?

    When deciding which route to take from Portugal to Chicago O'Hare Intl Airport consider Lisbon Humberto Delgado - Chicago O'Hare Intl, Porto - Chicago O'Hare Intl or Faro - Chicago O'Hare Intl as they are the most popular.

  • What are the cheapest flights from Portugal to Chicago O'Hare Intl Airport?

    Looking for the cheapest flight from Portugal to Chicago O'Hare Intl Airport? While on average our users pay $1,705, our data indicates the cheapest price to be $592. The most popular route (Lisbon Humberto Delgado - Chicago O'Hare Intl), is priced around $776.

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

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

  • How can I find direct flights from Portugal 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 Portugal to O'Hare Intl.

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

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

    Currently, February is the cheapest month in which you can book a flight from Portugal to Chicago O'Hare Intl Airport (average of $473). Flying from Portugal to Chicago O'Hare Intl Airport in March is currently the most expensive (average of $880). 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 Chicago O'Hare Intl Airport?

Book flights to Chicago O'Hare Intl Airport if you plan to visit one of these locations
Rosemont
Schaumburg
Lake Geneva
Gurnee
Naperville
Delavan
Downers Grove
Oakbrook Terrace
Des Plaines
Hoffman Estates
Oak Brook
South Holland
Libertyville
Benton Harbor
Elk Grove Village
Elgin
Warrenville
Bridgeview
Great Lakes
Lansing

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.

Top 2 airlines flying from Portugal to O'Hare Intl

Discover the top 2 airlines that operate flights from Portugal 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 April 18, 2026.
AirlineCheapestAverageFlexibilityOn-time
TAP AIR PORTUGALCheapest$665Average$1,209FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$706Average$909FlexibilityNo 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.