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$317+ 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 5/7. Fares are subject to change and may not be available on all flights or dates of travel.
LIS — CHI
Mar 9 — Mar 161
Mon 3/9
Mon 3/16
1 adult, Economy
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Cheap 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 February 7, 2026.

This Trip.com 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/65:35 pm
OPO
-
ORD
1 stop29h 10m
Scandinavian Airlines
Sun 3/228:20 pm
ORD
-
OPO
1 stop15h 25m
Scandinavian Airlines
Deal found 2/6$530
This Mytrip 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/78:00 pm
OPO
-
ORD
1 stop24h 45m
TAP AIR PORTUGAL
Fri 2/208:15 pm
ORD
-
OPO
1 stop22h 15m
TAP AIR PORTUGAL
Deal found 2/6$588
This Scandinavian 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 Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/410:35 am
FAO
-
ORD
2 stops36h 10m
Scandinavian Airlines
Sun 3/88:20 pm
ORD
-
FAO
1 stop33h 30m
Scandinavian Airlines
Deal found 2/5$603
This Mytrip 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/69:00 am
OPO
-
ORD
1 stop12h 25m
TAP AIR PORTUGAL
Fri 2/208:15 pm
ORD
-
OPO
1 stop31h 35m
TAP AIR PORTUGAL
Deal found 2/5$605
This Trip.com 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/98:00 pm
OPO
-
ORD
2 stops33h 40m
Multiple Airlines
Sat 3/146:01 pm
ORD
-
OPO
1 stop14h 09m
Multiple Airlines
Deal found 2/5$622
This FlightHub 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/1210:15 pm
LIS
-
ORD
1 stop21h 45m
Aer Lingus
Fri 5/153:45 pm
ORD
-
LIS
1 stop13h 00m
Aer Lingus
Deal found 2/5$637
This oojo 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/2112:45 pm
LIS
-
ORD
2 stops34h 00m
Scandinavian Airlines
Sun 11/297:20 pm
ORD
-
LIS
1 stop14h 45m
Scandinavian Airlines
Deal found 2/6$638
This Mytrip 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/48:00 am
LIS
-
ORD
3 stops31h 39m
Multiple Airlines
Tue 3/107:30 pm
ORD
-
LIS
2 stops19h 10m
Multiple Airlines
Deal found 2/6$651
This Booking.com deal was found by Cheapflights users on 2/4. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/44:55 pm
LIS
-
ORD
1 stop29h 50m
Multiple Airlines
Wed 3/118:20 pm
ORD
-
LIS
1 stop31h 35m
Multiple Airlines
Deal found 2/4$656
This Gotogate deal was found by Cheapflights users on 2/4. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/211:25 am
LIS
-
ORD
1 stop13h 50m
Aer Lingus
Thu 5/149:00 pm
ORD
-
LIS
1 stop18h 35m
Aer Lingus
Deal found 2/4$664
This Flighttix deal was found by Cheapflights users on 2/4. 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.
Wed 3/44:55 pm
LIS
-
ORD
1 stop29h 50m
Scandinavian Airlines
Wed 3/118:20 pm
ORD
-
LIS
2 stops44h 30m
Scandinavian Airlines
Deal found 2/4$669
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.
Wed 2/114:55 pm
LIS
-
ORD
1 stop29h 50m
Scandinavian Airlines
Wed 2/257:20 pm
ORD
-
LIS
2 stops16h 35m
Scandinavian Airlines
Deal found 2/5$678

Find flight deals from Portugal to Chicago

Keep the following information in mind while searching for Portugal to Chicago flight deals. Data was last updated February 7, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$493
(Kiwi.com)

One-way from

$317
(Kiwi.com)

Popular in

January

Cheapest in

February

Average price

$596

Good one-way deal

$641 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 (CHI)
Search Deals
One-way flight from Portugal to Chicago (CHI)
Search Deals
High demand for flights, 1% potential price rise
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($20 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in February 2026
Search Deals
Price to beat on a one-way flight from Portugal to Chicago (CHI).
Search Deals

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 February 7, 2026.
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 3/6

5:35 pm-4:45 pm

1 stop29h 10m

Chicago O'Hare Intl

Sun 3/22

8:20 pm-4:45 pm

1 stop15h 25m

$530

FaroChicago

FAO - ORD

FAOORD

Faro

Wed 3/4

10:35 am-4:45 pm

2 stops36h 10m

Chicago O'Hare Intl

Sun 3/8

8:20 pm-10:50 am

1 stop33h 30m

$603

LisbonChicago

LIS - ORD

LISORD

Lisbon Humberto Delgado

Sat 5/2

11:25 am-7:15 pm

1 stop13h 50m

Chicago O'Hare Intl

Thu 5/14

9:00 pm-9:35 pm

1 stop18h 35m

$664

LisbonChicago

LIS - ORD

LISORD

Lisbon Humberto Delgado

Wed 3/4

7:05 am-4:45 pm

1 stop15h 40m

Chicago O'Hare Intl

Tue 3/10

10:40 am-3:40 pm

2 stops24h 00m

$679

PortoChicago

OPO - ORD

OPOORD

Porto

Fri 3/6

6:45 pm-2:20 pm

2 stops25h 35m

Chicago O'Hare Intl

Sun 3/22

6:20 pm-11:00 pm

2 stops23h 40m

$696

FaroChicago

FAO - ORD

FAOORD

Faro

Fri 2/20

6:05 am-3:25 pm

1 stop15h 20m

Chicago O'Hare Intl

Fri 2/27

8:15 pm-3:45 pm

1 stop13h 30m

$713

LisbonChicago

LIS - ORD

LISORD

Lisbon Humberto Delgado

Sat 2/21

7:05 am-4:45 pm

1 stop15h 40m

Chicago O'Hare Intl

Sun 3/1

7:20 pm-4:30 pm

1 stop15h 10m

$718

PortoChicago

OPO - ORD

OPOORD

Porto

Mon 3/23

1:15 pm-12:22 am

3 stops40h 07m

Chicago O'Hare Intl

Mon 3/30

7:25 pm-8:40 pm

2 stops19h 15m

$721

LisbonChicago

LIS - ORD

LISORD

Lisbon Humberto Delgado

Wed 2/18

5:00 am-1:10 pm

1 stop14h 10m

Chicago O'Hare Intl

Wed 2/18

3:55 pm-9:20 am

1 stop11h 25m

$753

PortoChicago

OPO - ORD

OPOORD

Porto

Thu 5/21

2:10 pm-2:41 pm

2 stops54h 31m

Chicago O'Hare Intl

Tue 5/26

4:30 pm-5:50 pm

1 stop19h 20m

$773

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/4

Showing 1-10 of 57 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, November is the cheapest month in which you can book a flight from Portugal to Chicago (average of $517). Flying from Portugal to Chicago in February is currently the most expensive (average of $900). 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.

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 136 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 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 February 7, 2026.
Read reviews from past customers who have flown KLM, 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.
KLM
7.7
Good
1,450 reviews

Food

7.3

Boarding

7.8

Overall

7.7

Entertainment

7.1

Crew

8.4

Comfort

7.6

Reviews

1 / 20
10.0
Excellent

Snapyou,Jan 2026

TPA - LHR

Flight operated by Virgin Atlantic - usual high standard service by Virgin.
KLM
7.7
Good
1,450 reviews
KLM
7.7
Good
1,450 reviews

Food

7.3

Boarding

7.8

Overall

7.7

Entertainment

7.1

Crew

8.4

Comfort

7.6

Reviews

1 / 20
10.0
Excellent

Snapyou,Jan 2026

TPA - LHR

Flight operated by Virgin Atlantic - usual high standard service by Virgin.
American Airlines
7.2
Good
11,245 reviews
KLM
7.7
Good
1,450 reviews

Food

7.3

Boarding

7.8

Overall

7.7

Entertainment

7.1

Crew

8.4

Comfort

7.6

Reviews

1 / 20
10.0
Excellent

Snapyou,Jan 2026

TPA - LHR

Flight operated by Virgin Atlantic - usual high standard service by Virgin.
TAP AIR PORTUGAL
7.1
Good
2,135 reviews
KLM
7.7
Good
1,450 reviews

Food

7.3

Boarding

7.8

Overall

7.7

Entertainment

7.1

Crew

8.4

Comfort

7.6

Reviews

1 / 20
10.0
Excellent

Snapyou,Jan 2026

TPA - LHR

Flight operated by Virgin Atlantic - usual high standard service by Virgin.

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 18h 37m. Fly via Scandinavian Airlines, Aer Lingus, 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 cheapest airlines to fly from Portugal to Chicago 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 $484 one-way.

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

    Most travelers choose Lisbon Humberto Delgado - Chicago O'Hare Intl, Porto - Chicago O'Hare Intl or Faro - 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 $1,628, our data shows the cheapest flight currently is $554. When looking at the most popular route, (Lisbon Humberto Delgado - Chicago O'Hare Intl), you can expect to pay $637 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, November is the cheapest month in which you can book a flight from Portugal to Chicago (average of $517). Flying from Portugal to Chicago in February is currently the most expensive (average of $900). 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
Lansing
Merrillville
Hammond
Porter
Benton Harbor

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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 5 airlines flying from Portugal to Chicago

Discover the top 5 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 February 7, 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$650Average$696FlexibilityNo cancel feeOn-timeN/A
KLMCheapest$653Average$740FlexibilityNo cancel feeOn-time75%
TAP AIR PORTUGALCheapest$665Average$1,205FlexibilityNo cancel feeOn-timeN/A
Aer LingusCheapest$669Average$768FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$760Average$898FlexibilityNo cancel feeOn-time69%

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