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$300+ Cheap flights from Portugal to Chicago (CHI)

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 1/27. Fares are subject to change and may not be available on all flights or dates of travel.
LIS — CHI
Oct 16 — Oct 231
Thu 10/16
Thu 10/23
1 adult, Economy
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Cheap flight deals from Portugal to Chicago

Keep the following information in mind while searching for Portugal to Chicago flight deals. Data was last updated September 16, 2025.

Round-trip from

$390
(lol.travel)

One-way from

$300
(Kiwi.com)

Popular in

August

Cheapest in

February

Average price

$732

Good round-trip deal

$674 or less

Good one-way deal

$649 or less
From Portugal to Chicago (CHI)
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One-way flight from Portugal to Chicago (CHI)
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Highest demand for flights based on searches. 11% potential increase in price ($97 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($17 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Price to beat on a round-trip flight from Portugal to Chicago (CHI).
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Price to beat on a one-way flight from Portugal to Chicago (CHI).
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Find flight deals from Portugal to Chicago

Cheapest flights from Portugal to Chicago
Explore the most affordable flight options available from Portugal to Chicago. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 16, 2025.

This lol.travel deal was found by Cheapflights users on 9/15. 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 lol.travel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/75:35 pmOPO - ORD
1 stop29h 10mScandinavian Airlines
Sun 11/237:20 pmORD - OPO
1 stop15h 25mScandinavian Airlines
Deal found 9/15$390
This oojo deal was found by Cheapflights users on 9/15. 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 11/264:55 pmLIS - ORD
1 stop29h 50mScandinavian Airlines
Sun 11/307:20 pmORD - LIS
1 stop14h 45mScandinavian Airlines
Deal found 9/15$421
This Scandinavian Airlines deal was found by Cheapflights users on 9/15. 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.
Sat 11/155:10 pmFAO - ORD
1 stop29h 35mScandinavian Airlines
Sun 11/237:20 pmORD - FAO
1 stop32h 40mScandinavian Airlines
Deal found 9/15$421
This Scandinavian Airlines deal was found by Cheapflights users on 9/15. 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.
Sat 11/155:10 pmFAO - ORD
1 stop29h 35mScandinavian Airlines
Fri 11/217:20 pmORD - FAO
1 stop15h 00mScandinavian Airlines
Deal found 9/15$438
This Scandinavian Airlines deal was found by Cheapflights users on 9/15. 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.
Sat 11/155:10 pmFAO - ORD
1 stop29h 35mScandinavian Airlines
Wed 11/197:20 pmORD - FAO
2 stops57h 50mScandinavian Airlines
Deal found 9/15$447
This Scandinavian Airlines deal was found by Cheapflights users on 9/15. 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.
Wed 11/54:55 pmLIS - ORD
1 stop29h 50mScandinavian Airlines
Sun 11/237:20 pmORD - LIS
1 stop15h 10mScandinavian Airlines
Deal found 9/15$449
This oojo deal was found by Cheapflights users on 9/14. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/264:55 pmLIS - ORD
1 stop29h 50mScandinavian Airlines
Thu 12/117:20 pmORD - LIS
1 stop14h 45mScandinavian Airlines
Deal found 9/14$455
This Scandinavian Airlines deal was found by Cheapflights users on 9/15. 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.
Sat 11/155:10 pmFAO - ORD
1 stop29h 35mScandinavian Airlines
Thu 11/207:20 pmORD - FAO
2 stops33h 50mScandinavian Airlines
Deal found 9/15$482
This Scandinavian Airlines deal was found by Cheapflights users on 9/15. 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.
Sat 11/156:55 pmFAO - ORD
2 stops27h 50mScandinavian Airlines
Mon 11/247:20 pmORD - FAO
2 stops32h 25mScandinavian Airlines
Deal found 9/15$489
This Scandinavian Airlines deal was found by Cheapflights users on 9/15. 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.
Wed 11/54:55 pmLIS - ORD
1 stop29h 50mScandinavian Airlines
Fri 11/217:20 pmORD - LIS
1 stop31h 35mScandinavian Airlines
Deal found 9/15$508
This Scandinavian Airlines deal was found by Cheapflights users on 9/15. 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.
Wed 11/1210:35 amFAO - ORD
2 stops36h 10mScandinavian Airlines
Sun 11/237:20 pmORD - FAO
1 stop32h 40mScandinavian Airlines
Deal found 9/15$517
This Mytrip deal was found by Cheapflights users on 9/16. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/711:30 amOPO - ORD
2 stops35h 15mMultiple Airlines
Sun 11/237:20 pmORD - OPO
3 stops29h 30mMultiple Airlines
Deal found 9/16$526

Cheapflights Fare Finder

 
Customize your flight search to find flights from Portugal to Chicago 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 September 16, 2025.
Use the filters below to find and compare flights from Portugal to Chicago that are best for you.

Fly from

Portugal

Fly to

Chicago

Route

Depart

Return

Price

PortoChicago

OPO - ORD

OPOORD

Porto

Fri 11/7

5:35 pm-4:45 pm

1 stop29h 10m

Chicago O'Hare Intl

Sun 11/23

7:20 pm-4:45 pm

1 stop15h 25m

$390

FaroChicago

FAO - ORD

FAOORD

Faro

Sat 11/15

5:10 pm-4:45 pm

1 stop29h 35m

Chicago O'Hare Intl

Sun 11/23

7:20 pm-10:00 am

1 stop32h 40m

$421

FaroChicago

FAO - ORD

FAOORD

Faro

Sat 11/15

5:10 pm-4:45 pm

1 stop29h 35m

Chicago O'Hare Intl

Mon 11/24

7:20 pm-9:45 am

2 stops32h 25m

$429

FaroChicago

FAO - ORD

FAOORD

Faro

Sat 11/15

5:10 pm-4:45 pm

1 stop29h 35m

Chicago O'Hare Intl

Fri 11/21

7:20 pm-4:20 pm

1 stop15h 00m

$438

FaroChicago

FAO - ORD

FAOORD

Faro

Sat 11/15

5:10 pm-4:45 pm

1 stop29h 35m

Chicago O'Hare Intl

Wed 11/19

7:20 pm-11:10 am

2 stops57h 50m

$447

LisbonChicago

LIS - ORD

LISORD

Lisbon Humberto Delgado

Wed 12/24

7:00 pm-4:45 pm

1 stop27h 45m

Chicago O'Hare Intl

Thu 1/15

7:20 pm-3:50 pm

1 stop14h 30m

$508

FaroChicago

FAO - ORD

FAOORD

Faro

Wed 11/12

10:35 am-4:45 pm

2 stops36h 10m

Chicago O'Hare Intl

Mon 11/24

7:20 pm-9:45 am

2 stops32h 25m

$524

PortoChicago

OPO - ORD

OPOORD

Porto

Fri 11/7

11:30 am-4:45 pm

2 stops35h 15m

Chicago O'Hare Intl

Sun 11/23

7:20 pm-6:50 am

3 stops29h 30m

$526

FaroChicago

FAO - ORD

FAOORD

Faro

Wed 11/12

10:35 am-4:45 pm

2 stops36h 10m

Chicago O'Hare Intl

Fri 11/21

7:20 pm-4:20 pm

1 stop15h 00m

$535

FaroChicago

FAO - ORD

FAOORD

Faro

Sat 11/15

6:55 pm-4:45 pm

2 stops27h 50m

Chicago O'Hare Intl

Thu 11/20

7:20 pm-6:05 pm

2 stops40h 45m

$542

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/14

Showing 1-10 of 55 results
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Best time to book a flight from Portugal to Chicago

Have a flexible travel schedule? Discover the best time to fly to Chicago 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

What is the cheapest month to book a flight from Portugal to Chicago?

Currently, August is the cheapest month in which you can book a flight from Portugal to Chicago (average of $245). Flying from Portugal to Chicago in March is currently the most expensive (average of $321). 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 CHI?

Find hourly flight availability from Portugal to Chicago. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated September 16, 2025.

It’s optimal to fly from Portugal to Chicago at noon. By choosing this option you can save up to 23% on the cost of your flight, compared to a flight in the morning.

Reviews of airlines servicing Chicago

Get insights into the airlines that provide service to Chicago. 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 Chicago. Reviews last updated September 16, 2025.
Read reviews from past customers who have flown American Airlines and TAP AIR PORTUGAL from Portugal to Chicago. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
American Airlines
7.2
Good
10,000 reviews

Comfort

7.2

Overall

7.2

Entertainment

6.9

Food

6.4

Crew

8.0

Boarding

7.5

Reviews

1 / 20
2.0
Mediocre

Nordia,Sep 2025

KIN - MIA

We were to land in Miami sometime after 3pm but couldn’t due to bad weather, we flew around for 2 hrs until we had to land in Forth Myers to refuel, we had to sit another 2 hrs at Forth Myers until given the clearance to refuel, we were hungry, thirsty and frustrated at that point. All the had on the flight to offer was a small plastic glass of water and a pack of biscoff, I requested a cup of tea and was told none was there. We were basically at another airport and not one of the staff could consider that the passengers might be hungry or thirsty being on a plane for around 8 hrs, which you weren’t prepared for, at least find some hot water on board.
American Airlines
7.2
Good
10,000 reviews
American Airlines
7.2
Good
10,000 reviews

Comfort

7.2

Overall

7.2

Entertainment

6.9

Food

6.4

Crew

8.0

Boarding

7.5

Reviews

1 / 20
2.0
Mediocre

Nordia,Sep 2025

KIN - MIA

We were to land in Miami sometime after 3pm but couldn’t due to bad weather, we flew around for 2 hrs until we had to land in Forth Myers to refuel, we had to sit another 2 hrs at Forth Myers until given the clearance to refuel, we were hungry, thirsty and frustrated at that point. All the had on the flight to offer was a small plastic glass of water and a pack of biscoff, I requested a cup of tea and was told none was there. We were basically at another airport and not one of the staff could consider that the passengers might be hungry or thirsty being on a plane for around 8 hrs, which you weren’t prepared for, at least find some hot water on board.
TAP AIR PORTUGAL
7.1
Good
1,975 reviews
American Airlines
7.2
Good
10,000 reviews

Comfort

7.2

Overall

7.2

Entertainment

6.9

Food

6.4

Crew

8.0

Boarding

7.5

Reviews

1 / 20
2.0
Mediocre

Nordia,Sep 2025

KIN - MIA

We were to land in Miami sometime after 3pm but couldn’t due to bad weather, we flew around for 2 hrs until we had to land in Forth Myers to refuel, we had to sit another 2 hrs at Forth Myers until given the clearance to refuel, we were hungry, thirsty and frustrated at that point. All the had on the flight to offer was a small plastic glass of water and a pack of biscoff, I requested a cup of tea and was told none was there. We were basically at another airport and not one of the staff could consider that the passengers might be hungry or thirsty being on a plane for around 8 hrs, which you weren’t prepared for, at least find some hot water on board.

Related info for your journey

Find useful and relevant information for your journey from Portugal to Chicago. 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?

    There are many flights that can get you from Portugal to Chicago in 19h 25m. Fly via Scandinavian Airlines or Delta to get the fastest option. Airlines will cover a distance of 3994 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • What are the most popular routes from Portugal to Chicago?

    Most travelers choose Lisbon Humberto Delgado - Chicago O'Hare Intl, Lisbon Humberto Delgado - Chicago Midway or Porto - Chicago O'Hare Intl when deciding on the best route from Portugal to Chicago.

  • What are the cheapest flights from Portugal to Chicago?

    While on average a flight from Portugal to Chicago is generally $863, our data shows the cheapest flight currently is $557. When looking at the most popular route, (Lisbon Humberto Delgado - Chicago O'Hare Intl), you can expect to pay $429 for that flight.

  • Can I find deals for flights from Portugal to Chicago that include hotel bookings?

    Yes. In addition to deals on Portugal to Chicago flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Portugal to Chicago?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Portugal to Chicago.

  • Can I find deals for business class flights from Portugal to Chicago?

    Yes. Cheapflights offers flight deals from Portugal to Chicago 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?

    Currently, August is the cheapest month in which you can book a flight from Portugal to Chicago (average of $245). Flying from Portugal to Chicago in March is currently the most expensive (average of $321). 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?

Book flights to Chicago if you plan to visit one of these locations
Merrillville
Lansing
Hammond
Benton Harbor
Porter
Chesterton

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Alternative routes for Portugal to Chicago

See prices for flight routes from nearby airports that may be better suited for you.
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Top 4 airlines flying from Portugal to Chicago

Discover the top 4 airlines that operate flights from Portugal to Chicago. 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 September 16, 2025.
AirlineCheapestAverageFlexibilityOn-time
Aer LingusCheapest$579Average$742FlexibilityNo cancel feeOn-timeN/A
TAP AIR PORTUGALCheapest$580Average$1,209FlexibilityNo cancel feeOn-timeN/A
DeltaCheapest$650Average$696FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$716Average$872FlexibilityNo cancel feeOn-time69%

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