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$349+ 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
Apr 24 — May 11
Fri 4/24
Fri 5/1
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 March 25, 2026.

This Scandinavian Airlines deal was found by Cheapflights users on 3/22. 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.
Fri 11/134:55 pm
LIS
-
ORD
1 stop29h 50m
Scandinavian Airlines
Sun 11/157:20 pm
ORD
-
LIS
1 stop14h 45m
Scandinavian Airlines
Deal found 3/22$555
This Kiwi.com deal was found by Cheapflights users on 3/20. 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 5/1411:50 am
OPO
-
ORD
1 stop34h 20m
Scandinavian Airlines
Thu 5/287:15 pm
ORD
-
OPO
1 stop15h 50m
Scandinavian Airlines
Deal found 3/20$560
This Scandinavian Airlines deal was found by Cheapflights users on 3/23. 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.
Thu 11/124:55 pm
LIS
-
ORD
1 stop29h 50m
Scandinavian Airlines
Mon 11/167:20 pm
ORD
-
LIS
1 stop14h 45m
Scandinavian Airlines
Deal found 3/23$625
This Rumbo deal was found by Cheapflights users on 3/22. 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 Rumbo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/176:05 am
FAO
-
ORD
1 stop15h 55m
TAP AIR PORTUGAL
Fri 4/246:00 pm
ORD
-
FAO
1 stop10h 25m
TAP AIR PORTUGAL
Deal found 3/22$629
This Gotogate deal was found by Cheapflights users on 3/23. 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.
Thu 4/1610:30 pm
OPO
-
ORD
1 stop23h 30m
TAP AIR PORTUGAL
Sat 5/26:05 pm
ORD
-
OPO
1 stop14h 55m
TAP AIR PORTUGAL
Deal found 3/23$637
This Gotogate deal was found by Cheapflights users on 3/24. 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 4/186:05 am
FAO
-
ORD
1 stop16h 00m
TAP AIR PORTUGAL
Sat 4/256:05 pm
ORD
-
FAO
1 stop10h 20m
TAP AIR PORTUGAL
Deal found 3/24$637
This FlightHub deal was found by Cheapflights users on 3/20. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/3110:30 pm
OPO
-
ORD
1 stop23h 30m
TAP AIR PORTUGAL
Sat 4/256:05 pm
ORD
-
OPO
1 stop16h 55m
TAP AIR PORTUGAL
Deal found 3/20$656
This Scandinavian Airlines deal was found by Cheapflights users on 3/22. 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 10/104:25 pm
LIS
-
ORD
1 stop29h 45m
Scandinavian Airlines
Tue 10/137:15 pm
ORD
-
LIS
1 stop14h 20m
Scandinavian Airlines
Deal found 3/22$683
This Kiwi.com deal was found by Cheapflights users on 3/21. 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.
Thu 6/116:35 am
LIS
-
ORD
1 stop13h 50m
Multiple Airlines
Sun 7/269:00 pm
ORD
-
LIS
1 stop19h 05m
Multiple Airlines
Deal found 3/21$690
This oojo deal was found by Cheapflights users on 3/23. 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 5/204:25 pm
LIS
-
ORD
1 stop29h 45m
Scandinavian Airlines
Tue 5/267:15 pm
ORD
-
LIS
1 stop14h 20m
Scandinavian Airlines
Deal found 3/23$697
This Kiwi.com deal was found by Cheapflights users on 3/24. 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 6/116:35 am
LIS
-
ORD
1 stop13h 50m
Multiple Airlines
Sun 7/199:00 pm
ORD
-
LIS
1 stop19h 05m
Multiple Airlines
Deal found 3/24$701
This Kiwi.com deal was found by Cheapflights users on 3/21. 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.
Thu 6/116:35 am
LIS
-
ORD
1 stop13h 50m
Multiple Airlines
Tue 7/213:45 pm
ORD
-
LIS
1 stop23h 00m
Multiple Airlines
Deal found 3/21$708

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 March 25, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$560
(Kiwi.com)

One-way from

$349
(Kiwi.com)

Popular in

January

Cheapest in

February

Average price

$763

Good one-way deal

$711 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, 2% potential price rise
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 March 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 March 25, 2026.
Use the filters below to find and compare flights from Portugal to Chicago that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

PortoChicago

OPO - ORD

OPOORD

Porto

Mon 4/13

9:20 am-5:50 pm

3 stops38h 30m

Chicago O'Hare Intl

Mon 4/20

7:25 pm-8:40 pm

2 stops19h 15m

$735
Quickest round-trip

FaroChicago

FAO - ORD

FAOORD

Faro

Mon 5/4

7:50 am-7:15 pm

1 stop17h 25m

Chicago O'Hare Intl

Mon 5/11

3:45 pm-10:05 am

1 stop12h 20m

$748

FaroChicago

FAO - ORD

FAOORD

Faro

Sat 4/18

7:30 am-11:07 pm

2 stops21h 37m

Chicago O'Hare Intl

Sat 4/25

7:25 pm-6:10 pm

2 stops16h 45m

$753

PortoChicago

OPO - ORD

OPOORD

Porto

Thu 4/16

11:00 am-9:40 am

1 stop28h 40m

Chicago O'Hare Intl

Wed 4/29

11:25 am-10:00 am

1 stop16h 35m

$756

FaroChicago

FAO - ORD

FAOORD

Faro

Thu 5/7

10:15 am-7:15 pm

1 stop15h 00m

Chicago O'Hare Intl

Thu 5/14

9:00 pm-8:25 pm

1 stop17h 25m

$792

FaroChicago

FAO - ORD

FAOORD

Faro

Sat 6/6

6:45 pm-4:10 pm

1 stop27h 25m

Chicago O'Hare Intl

Sun 7/19

7:15 pm-9:30 am

2 stops56h 15m

$798

PortoChicago

OPO - ORD

OPOORD

Porto

Thu 5/14

4:25 pm-4:10 pm

2 stops29h 45m

Chicago O'Hare Intl

Thu 5/28

7:15 pm-5:05 pm

1 stop15h 50m

$809

PortoChicago

OPO - ORD

OPOORD

Porto

Mon 5/4

4:20 pm-2:15 pm

1 stop27h 55m

Chicago O'Hare Intl

Mon 5/11

5:10 pm-3:25 pm

1 stop16h 15m

$817

LisbonChicago

LIS - ORD

LISORD

Lisbon Humberto Delgado

Fri 6/19

1:00 pm-12:11 pm

2 stops53h 11m

Chicago O'Hare Intl

Mon 6/22

11:03 am-10:30 am

1 stop17h 27m

$818

PortoChicago

OPO - ORD

OPOORD

Porto

Wed 5/6

11:45 am-2:15 pm

1 stop32h 30m

Chicago O'Hare Intl

Wed 5/13

5:10 pm-10:00 pm

1 stop22h 50m

$819

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/21

Showing 1-10 of 60 resultsSorted by cheapest first
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6

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 March is currently the most expensive (average of $1,361). 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 March 25, 2026.

When flying from Portugal to Chicago, 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 26% 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 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 March 25, 2026.
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
7.1
Good
11,494 reviews

Crew

7.9

Boarding

7.5

Overall

7.1

Comfort

7.2

Food

6.4

Entertainment

6.9

Reviews

1 / 20
2.0
Mediocre

Anonymous,Mar 2026

MIA - SFO

Horrible. When they power flights for other airlines there is nothing they can do to change or accommodate any changes
American Airlines
7.1
Good
11,494 reviews
American Airlines
7.1
Good
11,494 reviews

Crew

7.9

Boarding

7.5

Overall

7.1

Comfort

7.2

Food

6.4

Entertainment

6.9

Reviews

1 / 20
2.0
Mediocre

Anonymous,Mar 2026

MIA - SFO

Horrible. When they power flights for other airlines there is nothing they can do to change or accommodate any changes
TAP AIR PORTUGAL
7.1
Good
2,176 reviews
American Airlines
7.1
Good
11,494 reviews

Crew

7.9

Boarding

7.5

Overall

7.1

Comfort

7.2

Food

6.4

Entertainment

6.9

Reviews

1 / 20
2.0
Mediocre

Anonymous,Mar 2026

MIA - SFO

Horrible. When they power flights for other airlines there is nothing they can do to change or accommodate any changes

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 27h 25m. Fly via Turkish Airlines, Scandinavian Airlines, or KLM to get the fastest option. Airlines will cover a distance of 4114 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, 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 $1,726, our data shows the cheapest flight currently is $562. When looking at the most popular route, (Lisbon Humberto Delgado - Chicago O'Hare Intl), you can expect to pay $697 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 March is currently the most expensive (average of $1,361). 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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Top 3 airlines flying from Portugal to Chicago

Discover the top 3 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 March 25, 2026.
AirlineCheapestAverageFlexibilityOn-time
KLMCheapest$653Average$740FlexibilityNo cancel feeOn-time75%
TAP AIR PORTUGALCheapest$665Average$1,209FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$760Average$872FlexibilityNo cancel feeOn-time69%

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