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Portugal

$253+ 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 4/20. Fares are subject to change and may not be available on all flights or dates of travel.
CHI — LIS
Mar 10 — Mar 171
Tue 3/10
Tue 3/17
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 February 8, 2026.

This lol.travel deal was found by Cheapflights users on 2/5. 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 3/18:25 pm
ORD
-
OPO
1 stop12h 55m
TAP AIR PORTUGAL
Tue 3/178:00 pm
OPO
-
ORD
1 stop25h 00m
TAP AIR PORTUGAL
Deal found 2/5$472
This oojo deal was found by Cheapflights users on 2/7. 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 3/47:10 pm
ORD
-
OPO
1 stop20h 50m
TAP AIR PORTUGAL
Tue 3/106:00 pm
OPO
-
ORD
1 stop27h 00m
TAP AIR PORTUGAL
Deal found 2/7$473
This Mytrip deal was found by Cheapflights users on 2/7. 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.
Tue 3/39:50 pm
ORD
-
LIS
1 stop19h 40m
Multiple Airlines
Wed 3/115:00 am
LIS
-
ORD
2 stops33h 13m
Multiple Airlines
Deal found 2/7$479
This Mytrip deal was found by Cheapflights users on 2/7. 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 2/182:00 pm
ORD
-
LIS
2 stops17h 20m
Multiple Airlines
Wed 2/255:00 am
LIS
-
ORD
1 stop14h 25m
Multiple Airlines
Deal found 2/7$480
This Scandinavian Airlines deal was found by Cheapflights users on 2/6. 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.
Sun 2/227:10 pm
ORD
-
LIS
1 stop15h 20m
Scandinavian Airlines
Sun 3/156:00 pm
LIS
-
ORD
1 stop28h 45m
Scandinavian Airlines
Deal found 2/6$481
This United Airlines deal was found by Cheapflights users on 2/5. 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.
Sun 2/221:02 pm
ORD
-
LIS
1 stop15h 13m
United Airlines
Wed 3/185:00 am
LIS
-
ORD
1 stop14h 25m
United Airlines
Deal found 2/5$482
This American Airlines deal was found by Cheapflights users on 2/7. 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.
Tue 3/36:30 pm
ORD
-
LIS
1 stop14h 15m
American Airlines
Wed 3/118:20 am
LIS
-
ORD
1 stop12h 35m
American Airlines
Deal found 2/7$483
This KLM deal was found by Cheapflights users on 2/5. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/2411:18 am
ORD
-
LIS
2 stops14h 42m
KLM
Tue 3/1711:25 am
LIS
-
ORD
1 stop32h 55m
KLM
Deal found 2/5$484
This United Airlines deal was found by Cheapflights users on 2/6. 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.
Tue 11/37:15 am
ORD
-
LIS
1 stop20h 05m
United Airlines
Wed 11/115:00 am
LIS
-
ORD
1 stop21h 05m
United Airlines
Deal found 2/6$485
This oojo deal was found by Cheapflights users on 2/5. 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 stop10h 25m
TAP AIR PORTUGAL
Thu 4/236:10 pm
FAO
-
ORD
1 stop27h 50m
TAP AIR PORTUGAL
Deal found 2/5$485
This United Airlines deal was found by Cheapflights users on 2/6. 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.
Sun 2/228:50 am
ORD
-
LIS
1 stop19h 25m
United Airlines
Thu 3/55:00 am
LIS
-
ORD
1 stop16h 20m
United Airlines
Deal found 2/6$486
This oojo deal was found by Cheapflights users on 2/5. 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.
Sun 4/196:00 pm
ORD
-
FAO
1 stop17h 20m
TAP AIR PORTUGAL
Thu 5/76:10 pm
FAO
-
ORD
1 stop27h 50m
TAP AIR PORTUGAL
Deal found 2/5$486

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 February 8, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$472
(lol.travel)

One-way from

$253
(Mytrip)

Popular in

June

Cheapest in

February

Average price

$523

Good round-trip deal

$458 or less

Good one-way deal

$357 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 ($161 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($18 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in February 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 February 8, 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

ChicagoFaro

ORD - FAO

ORDFAO

Chicago O'Hare Intl

Wed 4/22

6:00 pm-5:20 pm

1 stop17h 20m

Faro

Thu 4/30

6:10 pm-4:00 pm

1 stop27h 50m

$485

ChicagoLisbon

ORD - LIS

ORDLIS

Chicago O'Hare Intl

Sun 2/22

8:50 am-10:15 am

1 stop19h 25m

Lisbon Humberto Delgado

Thu 3/5

5:00 am-3:20 pm

1 stop16h 20m

$486

ChicagoLisbon

ORD - LIS

ORDLIS

Chicago O'Hare Intl

Tue 2/24

8:50 am-10:15 am

1 stop19h 25m

Lisbon Humberto Delgado

Tue 3/3

5:00 am-1:25 pm

1 stop14h 25m

$486

ChicagoFaro

ORD - FAO

ORDFAO

Chicago O'Hare Intl

Sun 4/19

6:00 pm-5:20 pm

1 stop17h 20m

Faro

Thu 5/7

6:10 pm-4:00 pm

1 stop27h 50m

$486

ChicagoLisbon

ORD - LIS

ORDLIS

Chicago O'Hare Intl

Wed 3/4

2:30 pm-8:10 am

1 stop11h 40m

Lisbon Humberto Delgado

Tue 3/10

5:00 am-4:20 pm

1 stop16h 20m

$486

ChicagoLisbon

ORD - LIS

ORDLIS

Chicago O'Hare Intl

Sun 3/22

10:50 pm-11:30 pm

1 stop19h 40m

Lisbon Humberto Delgado

Wed 4/1

7:25 am-2:50 pm

1 stop13h 25m

$489

ChicagoLisbon

ORD - LIS

ORDLIS

Chicago O'Hare Intl

Mon 4/13

10:20 am-11:15 am

2 stops18h 55m

Lisbon Humberto Delgado

Wed 4/22

5:00 am-2:30 pm

1 stop15h 30m

$492

ChicagoLisbon

ORD - LIS

ORDLIS

Chicago O'Hare Intl

Mon 4/20

4:50 pm-6:45 pm

1 stop19h 55m

Lisbon Humberto Delgado

Mon 4/27

7:45 pm-2:15 pm

1 stop24h 30m

$492

ChicagoLisbon

ORD - LIS

ORDLIS

Chicago O'Hare Intl

Tue 2/24

11:18 am-9:00 am

2 stops15h 42m

Lisbon Humberto Delgado

Tue 3/3

5:00 am-4:41 pm

2 stops17h 41m

$503

ChicagoLisbon

ORD - LIS

ORDLIS

Chicago O'Hare Intl

Tue 3/3

5:37 pm-5:30 pm

2 stops17h 53m

Lisbon Humberto Delgado

Wed 3/11

5:00 am-6:31 pm

2 stops18h 31m

$503

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/7

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, February is the cheapest month in which you can book a flight from Chicago to Portugal (average of $383). Flying from Chicago to Portugal in June is currently the most expensive (average of $685). 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 February 8, 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 40% 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 40% 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 February 8, 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
9,259 reviews

Entertainment

7.1

Crew

8.1

Overall

7.4

Boarding

7.7

Food

6.6

Comfort

7.3

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
9,259 reviews
United Airlines
7.4
Good
9,259 reviews

Entertainment

7.1

Crew

8.1

Overall

7.4

Boarding

7.7

Food

6.6

Comfort

7.3

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
1,447 reviews
United Airlines
7.4
Good
9,259 reviews

Entertainment

7.1

Crew

8.1

Overall

7.4

Boarding

7.7

Food

6.6

Comfort

7.3

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
10,699 reviews
United Airlines
7.4
Good
9,259 reviews

Entertainment

7.1

Crew

8.1

Overall

7.4

Boarding

7.7

Food

6.6

Comfort

7.3

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
2,135 reviews
United Airlines
7.4
Good
9,259 reviews

Entertainment

7.1

Crew

8.1

Overall

7.4

Boarding

7.7

Food

6.6

Comfort

7.3

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
7,721 reviews
United Airlines
7.4
Good
9,259 reviews

Entertainment

7.1

Crew

8.1

Overall

7.4

Boarding

7.7

Food

6.6

Comfort

7.3

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 $503, TAP AIR PORTUGAL can have you in Portugal from Chicago in 15h 31m. There are 3994 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 $282 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 $1,415 for a flight from Chicago to Portugal. The cheapest flight overall is $292 while the most popular route, (Chicago O'Hare Intl - Lisbon Humberto Delgado) is currently priced at $455.

  • 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, February is the cheapest month in which you can book a flight from Chicago to Portugal (average of $383). Flying from Chicago to Portugal in June is currently the most expensive (average of $685). 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 February 8, 2026.
AirlineCheapestAverageFlexibilityOn-time
Scandinavian AirlinesCheapest$369Average$478FlexibilityNo cancel feeOn-time77%
IcelandairCheapest$371Average$549FlexibilityNo cancel feeOn-time76%
LufthansaCheapest$441Average$674FlexibilityNo cancel feeOn-time76%
TAP AIR PORTUGALCheapest$450Average$818FlexibilityNo cancel feeOn-timeN/A
Air FranceCheapest$470Average$605FlexibilityNo cancel feeOn-time77%
SWISSCheapest$489Average$734FlexibilityNo cancel feeOn-time79%
Aer LingusCheapest$497Average$884FlexibilityNo cancel feeOn-timeN/A
IberiaCheapest$501Average$739FlexibilityNo cancel feeOn-time77%
Virgin AtlanticCheapest$503Average$600FlexibilityNo cancel feeOn-time72%
American AirlinesCheapest$505Average$742FlexibilityNo cancel feeOn-time71%

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