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$229+ Cheap flights from Chicago (CHI) to Portugal

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 2/23. Fares are subject to change and may not be available on all flights or dates of travel.
CHI — LIS
Feb 20 — Feb 271
Fri 2/20
Fri 2/27
1 adult, Economy
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Cheap flight deals from Chicago to Portugal

Cheapest flights from Chicago to Portugal
Explore the most affordable flight options available from Chicago to Portugal. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 21, 2026.

This Kiwi.com deal was found by Cheapflights users on 1/20. 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 3/198:20 pm
ORD
-
OPO
1 stop15h 35m
Scandinavian Airlines
Wed 3/2510:25 am
OPO
-
ORD
1 stop36h 20m
Scandinavian Airlines
Deal found 1/20$463
This Kiwi.com deal was found by Cheapflights users on 1/19. 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.
Wed 3/49:50 pm
ORD
-
OPO
1 stop19h 50m
Lufthansa
Wed 3/1112:30 pm
OPO
-
ORD
1 stop13h 35m
Lufthansa
Deal found 1/19$468
This lol.travel deal was found by Cheapflights users on 1/21. 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 lol.travel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 1/258:25 pm
ORD
-
OPO
1 stop15h 40m
TAP AIR PORTUGAL
Tue 2/108:00 pm
OPO
-
ORD
1 stop25h 00m
TAP AIR PORTUGAL
Deal found 1/21$469
This oojo deal was found by Cheapflights users on 1/20. 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 2/47:10 pm
ORD
-
OPO
1 stop13h 55m
TAP AIR PORTUGAL
Wed 2/116:55 am
OPO
-
ORD
1 stop14h 05m
TAP AIR PORTUGAL
Deal found 1/20$471
This Kiwi.com deal was found by Cheapflights users on 1/21. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/152:20 pm
ORD
-
OPO
1 stop22h 10m
SWISS
Thu 4/307:20 pm
OPO
-
ORD
1 stop26h 35m
SWISS
Deal found 1/21$477
This oojo deal was found by Cheapflights users on 1/20. 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 2/117:10 pm
ORD
-
FAO
1 stop22h 40m
TAP AIR PORTUGAL
Wed 2/186:05 am
FAO
-
ORD
1 stop14h 55m
TAP AIR PORTUGAL
Deal found 1/20$483
This Finnair deal was found by Cheapflights users on 1/20. 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 Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/2810:15 pm
ORD
-
LIS
1 stop19h 10m
Finnair
Tue 5/126:35 am
LIS
-
ORD
1 stop13h 40m
Finnair
Deal found 1/20$484
This oojo deal was found by Cheapflights users on 1/19. 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 4/176:00 pm
ORD
-
FAO
1 stop17h 20m
TAP AIR PORTUGAL
Thu 4/236:10 pm
FAO
-
ORD
1 stop27h 50m
TAP AIR PORTUGAL
Deal found 1/19$484
This United Airlines deal was found by Cheapflights users on 1/20. 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 1/212:27 pm
ORD
-
LIS
1 stop11h 43m
United Airlines
Tue 1/275:00 am
LIS
-
ORD
1 stop16h 20m
United Airlines
Deal found 1/20$485
This United Airlines deal was found by Cheapflights users on 1/19. 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 1/214:15 pm
ORD
-
LIS
1 stop9h 55m
United Airlines
Wed 1/286:10 am
LIS
-
ORD
1 stop14h 00m
United Airlines
Deal found 1/19$486
This oojo deal was found by Cheapflights users on 1/20. 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.
Mon 5/44:16 pm
ORD
-
LIS
2 stops17h 29m
British Airways
Mon 5/116:45 pm
LIS
-
ORD
2 stops30h 40m
British Airways
Deal found 1/20$487
This Expedia deal was found by Cheapflights users on 1/20. 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.
Wed 3/46:30 pm
ORD
-
FNC
1 stop15h 40m
British Airways
Wed 3/114:00 pm
FNC
-
ORD
1 stop27h 50m
British Airways
Deal found 1/20$487

Find flight deals from Chicago to Portugal

Keep the following information in mind while searching for Chicago to Portugal flight deals. Data was last updated January 21, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

Expedia
3 stars

Round-trip from

$463
(Kiwi.com)

One-way from

$229
(Kiwi.com)

Popular in

June

Cheapest in

February

Average price

$590

Good round-trip deal

$484 or less

Good one-way deal

$350 or less
Provider with most accurate pricing for Chicago (CHI)-Lisbon Humberto Delgado flight deals.
Search Deals
Provider most trusted by Cheapflights users for Chicago (CHI)-Lisbon Humberto Delgado flights.
Search Deals
From Chicago (CHI) to Portugal
Search Deals
One-way flight from Chicago (CHI) to Portugal
Search Deals
Highest demand for flights based on searches. 17% potential increase in price ($154 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($19 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 2026
Search Deals
Price to beat on a round-trip flight from Chicago (CHI) to Portugal.
Search Deals
Price to beat on a one-way flight from Chicago (CHI) to Portugal.
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Chicago to Portugal 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 January 21, 2026.
Use the filters below to find and compare flights from Chicago to Portugal that are best for you.

Fly from

Chicago

Fly to

Portugal

Route

Depart

Return

Price

ChicagoPorto

ORD - OPO

ORDOPO

Chicago O'Hare Intl

Thu 3/19

8:20 pm-4:55 pm

1 stop15h 35m

Porto

Wed 3/25

10:25 am-5:45 pm

1 stop36h 20m

$473

ChicagoFaro

ORD - FAO

ORDFAO

Chicago O'Hare Intl

Wed 2/11

7:10 pm-11:50 pm

1 stop22h 40m

Faro

Wed 2/18

6:05 am-3:00 pm

1 stop14h 55m

$483

ChicagoFaro

ORD - FAO

ORDFAO

Chicago O'Hare Intl

Fri 4/17

6:00 pm-11:50 pm

1 stop23h 50m

Faro

Thu 4/23

6:10 pm-4:00 pm

1 stop27h 50m

$484

ChicagoFunchal

ORD - FNC

ORDFNC

Chicago O'Hare Intl

Wed 3/4

6:30 pm-4:10 pm

1 stop15h 40m

Funchal Madeira

Wed 3/11

4:00 pm-2:50 pm

1 stop27h 50m

$487

ChicagoLisbon

ORD - LIS

ORDLIS

Chicago O'Hare Intl

Mon 3/23

7:00 pm-1:20 pm

1 stop13h 20m

Lisbon Humberto Delgado

Mon 3/30

5:05 am-11:00 am

1 stop35h 55m

$499

ChicagoLisbon

ORD - LIS

ORDLIS

Chicago O'Hare Intl

Mon 2/9

5:59 pm-5:30 pm

2 stops17h 31m

Lisbon Humberto Delgado

Thu 3/5

5:00 am-4:51 pm

2 stops17h 51m

$501

ChicagoLisbon

MDW - LIS

MDWLIS

Chicago Midway

Tue 3/17

6:34 pm-3:10 pm

2 stops15h 36m

Lisbon Humberto Delgado

Tue 3/31

5:00 am-4:55 pm

2 stops17h 55m

$501

ChicagoLisbon

MDW - LIS

MDWLIS

Chicago Midway

Tue 3/3

12:45 pm-11:20 am

2 stops16h 35m

Lisbon Humberto Delgado

Wed 3/11

5:00 am-6:40 pm

2 stops18h 40m

$501

ChicagoLisbon

ORD - LIS

ORDLIS

Chicago O'Hare Intl

Thu 4/9

2:25 pm-10:30 am

1 stop14h 05m

Lisbon Humberto Delgado

Wed 4/22

6:15 am-6:15 pm

1 stop18h 00m

$502

ChicagoLisbon

ORD - LIS

ORDLIS

Chicago O'Hare Intl

Mon 2/2

3:35 pm-8:10 am

1 stop10h 35m

Lisbon Humberto Delgado

Sat 2/28

6:10 am-6:25 pm

1 stop18h 15m

$502

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/20

Showing 1-10 of 60 results
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Best time to book a flight from Chicago to Portugal

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

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

Currently, December is the cheapest month in which you can book a flight from Chicago to Portugal (average of $405). Flying from Chicago to Portugal in June is currently the most expensive (average of $690). 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 CHI to PT?

Find hourly flight availability from Chicago to Portugal. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated January 21, 2026.

When flying from Chicago to Portugal, 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 Chicago to Portugal delayed?

About 41% of weekly flights between Chicago and Portugal have experienced delays in the past year, with the average delay time being 141 minutes.

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

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

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

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

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

Over the last year, TAP AIR PORTUGAL have had the lowest number of delays on this route, with just 41% of flights being delayed.

Reviews of airlines servicing Portugal

Get insights into the airlines that provide service to Portugal. 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 Portugal. Reviews last updated January 21, 2026.
Read reviews from past customers who have flown United Airlines, Aer Lingus, and Air Canada from Chicago to Portugal. 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.
United Airlines
7.4
Good
9,191 reviews

Entertainment

7.1

Food

6.6

Crew

8.1

Comfort

7.3

Overall

7.4

Boarding

7.7

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family
United Airlines
7.4
Good
9,191 reviews
United Airlines
7.4
Good
9,191 reviews

Entertainment

7.1

Food

6.6

Crew

8.1

Comfort

7.3

Overall

7.4

Boarding

7.7

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family
Aer Lingus
7.2
Good
1,441 reviews
United Airlines
7.4
Good
9,191 reviews

Entertainment

7.1

Food

6.6

Crew

8.1

Comfort

7.3

Overall

7.4

Boarding

7.7

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family
Air Canada
7.1
Good
10,646 reviews
United Airlines
7.4
Good
9,191 reviews

Entertainment

7.1

Food

6.6

Crew

8.1

Comfort

7.3

Overall

7.4

Boarding

7.7

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family
TAP AIR PORTUGAL
7.1
Good
2,124 reviews
United Airlines
7.4
Good
9,191 reviews

Entertainment

7.1

Food

6.6

Crew

8.1

Comfort

7.3

Overall

7.4

Boarding

7.7

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family
British Airways
6.7
Okay
7,690 reviews
United Airlines
7.4
Good
9,191 reviews

Entertainment

7.1

Food

6.6

Crew

8.1

Comfort

7.3

Overall

7.4

Boarding

7.7

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family

Related info for your journey

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

    For as low as $473, Scandinavian Airlines can have you in Portugal from Chicago in 15h 35m. There are 3931 mi between Chicago and Portugal. This flight may include one or multiple stops.

  • What are the cheapest airlines to fly from Chicago to Portugal one-way?

    To fly one-way, consider booking your trip with Iberia, which is currently one of the cheapest options available, starting at $130. British Airways flights start at $210 while deals on TAP AIR PORTUGAL start at $283 one-way.

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

    The most popular route from Chicago to Portugal is Chicago O'Hare Intl - Lisbon Humberto Delgado. You may also consider Chicago Midway - Lisbon Humberto Delgado or Chicago O'Hare Intl - Porto.

  • What are the cheapest flights from Chicago to Portugal?

    On average you can expect to pay $910 for a flight from Chicago to Portugal. The cheapest flight overall is $288 while the most popular route, (Chicago O'Hare Intl - Lisbon Humberto Delgado) is currently priced at $370.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Chicago to Portugal 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 Chicago to Portugal?

    Currently, December is the cheapest month in which you can book a flight from Chicago to Portugal (average of $405). Flying from Chicago to Portugal in June is currently the most expensive (average of $690). 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

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Alternative routes for Chicago to Portugal

See prices for flight routes from nearby airports that may be better suited for you.
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Top 10 airlines flying from Chicago to Portugal

Discover the top 10 airlines that operate flights from Chicago to Portugal. 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 January 21, 2026.
AirlineCheapestAverageFlexibilityOn-time
Scandinavian AirlinesCheapest$369Average$472FlexibilityNo cancel feeOn-time77%
IcelandairCheapest$371Average$549FlexibilityNo cancel feeOn-time76%
LufthansaCheapest$441Average$671FlexibilityNo cancel feeOn-time76%
Air FranceCheapest$470Average$556FlexibilityNo cancel feeOn-time77%
TAP AIR PORTUGALCheapest$480Average$827FlexibilityNo cancel feeOn-timeN/A
IberiaCheapest$488Average$739FlexibilityNo cancel feeOn-time77%
SWISSCheapest$489Average$729FlexibilityNo cancel feeOn-time79%
Aer LingusCheapest$494Average$884FlexibilityNo cancel feeOn-timeN/A
Virgin AtlanticCheapest$503Average$600FlexibilityNo cancel feeOn-time72%
British AirwaysCheapest$504Average$730FlexibilityNo cancel feeOn-time70%

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