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O'Hare Intl

$379+ 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 9/8. Fares are subject to change and may not be available on all flights or dates of travel.
LIS — ORD
Aug 18 — Aug 251
Tue 8/18
Tue 8/25
1 adult, Economy
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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 July 19, 2026.

This deal was found by Cheapflights users on 7/17. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/178:25 am
LIS
-
ORD
1 stop12h 00m
Iberia
Sat 9/264:55 pm
ORD
-
LIS
1 stop12h 55m
Iberia
Deal found 7/17$567
This American Airlines deal was found by Cheapflights users on 7/18. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/58:25 am
LIS
-
ORD
1 stop12h 00m
American Airlines
Sat 9/127:05 pm
ORD
-
LIS
1 stop17h 00m
American Airlines
Deal found 7/18$590
This Expedia deal was found by Cheapflights users on 7/18. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/111:45 am
FAO
-
ORD
1 stop13h 30m
Aer Lingus
Tue 9/83:45 pm
ORD
-
FAO
1 stop12h 50m
Aer Lingus
Deal found 7/18$590
This American Airlines deal was found by Cheapflights users on 7/17. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/278:25 am
LIS
-
ORD
1 stop12h 00m
American Airlines
Fri 9/118:50 pm
ORD
-
LIS
1 stop12h 45m
American Airlines
Deal found 7/17$591
This Flighttix deal was found by Cheapflights users on 7/17. 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 Flighttix is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/88:20 am
OPO
-
ORD
1 stop12h 05m
Iberia
Fri 9/1811:37 am
ORD
-
OPO
2 stops14h 03m
Iberia
Deal found 7/17$594
This oojo deal was found by Cheapflights users on 7/15. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/284:55 pm
LIS
-
ORD
1 stop29h 50m
Scandinavian Airlines
Thu 1/147:15 pm
ORD
-
LIS
1 stop14h 50m
Scandinavian Airlines
Deal found 7/15$594
This Iberia deal was found by Cheapflights users on 7/17. 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 Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/38:20 am
OPO
-
ORD
1 stop12h 05m
Multiple Airlines
Wed 9/165:55 pm
ORD
-
OPO
1 stop19h 10m
Multiple Airlines
Deal found 7/17$595
This Trip.com deal was found by Cheapflights users on 7/16. 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.
Sat 10/314:55 pm
LIS
-
ORD
1 stop29h 50m
Scandinavian Airlines
Fri 11/67:15 pm
ORD
-
LIS
1 stop14h 50m
Scandinavian Airlines
Deal found 7/16$595
This American Airlines deal was found by Cheapflights users on 7/18. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/208:20 am
OPO
-
ORD
1 stop12h 50m
American Airlines
Sun 11/225:10 pm
ORD
-
OPO
2 stops16h 50m
American Airlines
Deal found 7/18$596
This American Airlines deal was found by Cheapflights users on 7/18. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/911:05 am
LIS
-
ORD
1 stop14h 34m
American Airlines
Mon 9/1410:25 pm
ORD
-
LIS
1 stop18h 45m
American Airlines
Deal found 7/18$596
This British Airways deal was found by Cheapflights users on 7/18. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/67:20 am
LIS
-
ORD
1 stop14h 35m
British Airways
Sat 9/129:15 pm
ORD
-
LIS
1 stop13h 05m
British Airways
Deal found 7/18$606
This American Airlines deal was found by Cheapflights users on 7/17. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/38:20 am
OPO
-
ORD
1 stop12h 05m
American Airlines
Wed 9/164:55 pm
ORD
-
OPO
1 stop17h 05m
American Airlines
Deal found 7/17$607

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 July 19, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$567

One-way from

$379
(Kiwi.com)

Popular in

June

Cheapest in

February

Average price

$1,013

Good round-trip deal

$1,083 or less

Good one-way deal

$641 or less
Provider with most accurate pricing for Lisbon Humberto Delgado-Chicago (CHI) flight deals.
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Provider most trusted by Cheapflights users for Lisbon Humberto Delgado-Chicago (CHI) flights.
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From Portugal to Chicago O'Hare Intl
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One-way flight from Portugal to Chicago O'Hare Intl
Search Deals
Highest demand for flights based on searches. 10% potential increase in price ($112 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($29 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in July 2026
Search Deals
Price to beat on a round-trip flight from Portugal to Chicago O'Hare Intl.
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Price to beat on a one-way flight from Portugal to Chicago O'Hare Intl.
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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 July 19, 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

PortoChicago

OPO - ORD

OPOORD

Porto

Fri 11/20

8:20 am-3:10 pm

1 stop12h 50m

Chicago O'Hare Intl

Sun 11/22

5:10 pm-4:00 pm

2 stops16h 50m

$596

PortoChicago

OPO - ORD

OPOORD

Porto

Sun 8/23

6:00 am-2:55 pm

1 stop14h 55m

Chicago O'Hare Intl

Mon 9/7

7:05 am-6:55 am

1 stop17h 50m

$631

PortoChicago

OPO - ORD

OPOORD

Porto

Wed 8/19

6:00 am-2:55 pm

1 stop14h 55m

Chicago O'Hare Intl

Wed 8/26

8:45 am-6:55 am

2 stops16h 10m

$632

PortoChicago

OPO - ORD

OPOORD

Porto

Sun 8/23

6:00 am-2:55 pm

1 stop14h 55m

Chicago O'Hare Intl

Sat 9/5

1:30 pm-9:45 am

1 stop14h 15m

$632
Quickest round-trip

PortoChicago

OPO - ORD

OPOORD

Porto

Fri 11/20

6:00 am-1:10 pm

1 stop13h 10m

Chicago O'Hare Intl

Sun 11/22

5:30 pm-9:30 am

1 stop10h 00m

$632

LisbonChicago

LIS - ORD

LISORD

Lisbon Humberto Delgado

Fri 11/20

4:55 pm-4:45 pm

1 stop29h 50m

Chicago O'Hare Intl

Mon 11/23

7:15 pm-4:05 pm

1 stop14h 50m

$633

PortoChicago

OPO - ORD

OPOORD

Porto

Fri 9/11

6:00 am-7:55 pm

1 stop19h 55m

Chicago O'Hare Intl

Fri 9/25

8:50 am-7:10 am

2 stops16h 20m

$635

PortoChicago

OPO - ORD

OPOORD

Porto

Tue 9/1

6:00 am-7:55 pm

1 stop19h 55m

Chicago O'Hare Intl

Tue 9/8

7:55 pm-7:00 am

2 stops29h 05m

$636

LisbonChicago

LIS - ORD

LISORD

Lisbon Humberto Delgado

Sun 10/25

5:00 am-9:05 pm

1 stop21h 05m

Chicago O'Hare Intl

Mon 12/7

1:12 pm-10:20 am

1 stop15h 08m

$640

LisbonChicago

LIS - ORD

LISORD

Lisbon Humberto Delgado

Sun 10/11

5:05 am-12:55 pm

1 stop13h 50m

Chicago O'Hare Intl

Sat 12/5

2:25 pm-10:20 am

1 stop13h 55m

$640

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/15

Showing 1-10 of 50 resultsSorted by cheapest first
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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 $695). Flying from Portugal to Chicago O'Hare Intl Airport in August is currently the most expensive (average of $1,209). 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 July 19, 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 22% 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 22% 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 July 19, 2026.
Get a feel of what it's like to fly with 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.
TAP AIR PORTUGAL
7.2
Good
2,340 reviews

Overall

7.2

Crew

7.8

Entertainment

6.4

Comfort

7.1

Boarding

7.0

Food

6.3

Reviews

1 / 20
8.0
Excellent

Anonymous,Jun 2026

LIS - ORD

The check in process at the Lisbon Airport was terrible. The TAP staff was incompetent and directed us incorrectly.
TAP AIR PORTUGAL
7.2
Good
2,340 reviews
TAP AIR PORTUGAL
7.2
Good
2,340 reviews

Overall

7.2

Crew

7.8

Entertainment

6.4

Comfort

7.1

Boarding

7.0

Food

6.3

Reviews

1 / 20
8.0
Excellent

Anonymous,Jun 2026

LIS - ORD

The check in process at the Lisbon Airport was terrible. The TAP staff was incompetent and directed us incorrectly.

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 American Airlines, United Airlines, and Scandinavian Airlines fly from Portugal to Chicago O'Hare Intl Airport in about 12h 50m. The time it takes to get you to your destination can typically vary by up to 17h. 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. Iberia flights start at $484 while deals on American Airlines start at $488 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 $945, our data indicates the cheapest price to be $599. The most popular route (Lisbon Humberto Delgado - Chicago O'Hare Intl), is priced around $593.

  • 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 $695). Flying from Portugal to Chicago O'Hare Intl Airport in August is currently the most expensive (average of $1,209). 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
Benton Harbor
Rosemont
Schaumburg
Lake Geneva
Naperville
Oak Brook
Delavan
Oakbrook Terrace
Gurnee
South Holland
Libertyville
Orland Park
Hoffman Estates
Beloit
Downers Grove
Rockford
Racine
Great Lakes
Janesville
Joliet

Browse thousands of different options on Cheapflights for your next trip

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Top airline flying from Portugal to O'Hare Intl

Discover the top airline 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 July 19, 2026.
AirlineCheapestAverageFlexibilityOn-time
TAP AIR PORTUGALCheapest$748Average$1,205FlexibilityNo cancel feeOn-timeN/A

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