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$407+ 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 6/14. Fares are subject to change and may not be available on all flights or dates of travel.
LIS — CHI
Jun 9 — Jun 161
Selasa 6/9
Selasa 6/16
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 Mei 10, 2026.

This United Airlines deal was found by Cheapflights users on 5/9. 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.
Sabtu 6/611:55 am
OPO
-
ORD
1 stop32h 55m
United Airlines
Isnin 6/87:10 am
ORD
-
OPO
1 stop17h 45m
United Airlines
Deal found 5/9$540
This Scandinavian Airlines deal was found by Cheapflights users on 5/5. 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.
Selasa 11/244:55 pm
LIS
-
ORD
1 stop29h 50m
Scandinavian Airlines
Sabtu 11/287:15 pm
ORD
-
LIS
1 stop14h 50m
Scandinavian Airlines
Deal found 5/5$644
This Kiwi.com deal was found by Cheapflights users on 5/6. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Rabu 11/1111:55 am
OPO
-
ORD
1 stop34h 50m
Scandinavian Airlines
Khamis 11/197:15 pm
ORD
-
OPO
1 stop15h 40m
Scandinavian Airlines
Deal found 5/6$672
This Kiwi.com deal was found by Cheapflights users on 5/6. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Jumaat 10/166:35 am
LIS
-
ORD
1 stop13h 50m
Multiple Airlines
Isnin 11/26:30 pm
ORD
-
LIS
2 stops21h 35m
Multiple Airlines
Deal found 5/6$698
This Kiwi.com deal was found by Cheapflights users on 5/6. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Jumaat 10/166:35 am
LIS
-
ORD
1 stop13h 50m
Multiple Airlines
Ahad 11/16:30 pm
ORD
-
LIS
2 stops20h 35m
Multiple Airlines
Deal found 5/6$703
This Kiwi.com deal was found by Cheapflights users on 5/6. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Jumaat 10/166:35 am
LIS
-
ORD
1 stop13h 50m
Multiple Airlines
Selasa 11/36:30 pm
ORD
-
LIS
2 stops19h 20m
Multiple Airlines
Deal found 5/6$708
This Kiwi.com deal was found by Cheapflights users on 5/6. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sabtu 10/176:35 am
LIS
-
ORD
1 stop13h 50m
Multiple Airlines
Ahad 11/16:30 pm
ORD
-
LIS
2 stops20h 35m
Multiple Airlines
Deal found 5/6$743
This Kiwi.com deal was found by Cheapflights users on 5/6. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sabtu 10/176:35 am
LIS
-
ORD
1 stop13h 50m
Multiple Airlines
Selasa 11/36:30 pm
ORD
-
LIS
2 stops19h 20m
Multiple Airlines
Deal found 5/6$748
This Kiwi.com deal was found by Cheapflights users on 5/6. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sabtu 10/106:35 am
LIS
-
ORD
1 stop13h 50m
Multiple Airlines
Ahad 10/257:30 pm
ORD
-
LIS
2 stops20h 35m
Multiple Airlines
Deal found 5/6$753
This FlightHub deal was found by Cheapflights users on 5/6. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Rabu 10/144:25 pm
LIS
-
ORD
1 stop29h 45m
Scandinavian Airlines
Sabtu 10/318:15 pm
ORD
-
LIS
1 stop14h 50m
Scandinavian Airlines
Deal found 5/6$755
This Kiwi.com deal was found by Cheapflights users on 5/6. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Jumaat 10/166:35 am
LIS
-
ORD
1 stop13h 50m
Multiple Airlines
Rabu 10/288:40 pm
ORD
-
LIS
1 stop18h 15m
Multiple Airlines
Deal found 5/6$762
This Scandinavian Airlines deal was found by Cheapflights users on 5/6. 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.
Rabu 10/144:25 pm
LIS
-
ORD
1 stop29h 45m
Scandinavian Airlines
Selasa 11/37:15 pm
ORD
-
LIS
1 stop14h 50m
Scandinavian Airlines
Deal found 5/6$778

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 Mei 10, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$540
(United Airlines)

One-way from

$424
(Kiwi.com)

Popular in

January

Cheapest in

February

Average price

$834

Good one-way deal

$648 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, 4% potential price rise
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($27 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in May 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 Mei 10, 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

FaroChicago

FAO - ORD

FAOORD

Faro

Khamis 5/21

12:50 pm-4:00 pm

2 stops33h 10m

Chicago O'Hare Intl

Isnin 5/25

9:55 am-11:30 pm

2 stops31h 35m

$841

FaroChicago

FAO - ORD

FAOORD

Faro

Sabtu 6/6

6:45 pm-4:10 pm

1 stop27h 25m

Chicago O'Hare Intl

Jumaat 6/12

7:15 pm-5:55 pm

1 stop16h 40m

$904

PortoChicago

OPO - ORD

OPOORD

Porto

Jumaat 9/11

6:00 am-7:55 pm

1 stop19h 55m

Chicago O'Hare Intl

Selasa 9/15

10:00 am-6:15 am

2 stops14h 15m

$909

PortoChicago

OPO - ORD

OPOORD

Porto

Khamis 6/18

6:00 am-2:55 pm

1 stop14h 55m

Chicago O'Hare Intl

Isnin 6/22

4:05 pm-3:40 pm

1 stop17h 35m

$910

PortoChicago

OPO - ORD

OPOORD

Porto

Khamis 6/18

6:00 am-7:55 pm

1 stop19h 55m

Chicago O'Hare Intl

Isnin 6/22

10:30 pm-8:45 pm

1 stop16h 15m

$911
Quickest round-trip

PortoChicago

OPO - ORD

OPOORD

Porto

Khamis 6/4

6:00 am-2:55 pm

1 stop14h 55m

Chicago O'Hare Intl

Rabu 6/10

8:40 am-7:00 am

2 stops16h 20m

$913

LisbonChicago

LIS - ORD

LISORD

Lisbon Humberto Delgado

Rabu 10/7

5:05 am-7:55 pm

1 stop20h 50m

Chicago O'Hare Intl

Ahad 10/11

3:40 pm-8:20 am

1 stop10h 40m

$914

PortoChicago

OPO - ORD

OPOORD

Porto

Khamis 5/21

5:00 am-4:29 pm

2 stops17h 29m

Chicago O'Hare Intl

Jumaat 6/5

5:19 pm-3:25 pm

2 stops16h 06m

$916

PortoChicago

OPO - ORD

OPOORD

Porto

Khamis 10/8

6:00 am-11:15 pm

2 stops23h 15m

Chicago O'Hare Intl

Isnin 10/12

1:10 pm-9:45 am

1 stop14h 35m

$916

PortoChicago

OPO - ORD

OPOORD

Porto

Khamis 5/21

4:20 pm-2:15 pm

1 stop27h 55m

Chicago O'Hare Intl

Jumaat 6/5

4:20 pm-10:15 pm

1 stop23h 55m

$918

Flights are sorted by cheapest round-trip flights first.

Deals found on 5/6

Showing 1-10 of 59 resultsSorted by cheapest first
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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

How far ahead should I book a flight from Portugal to Chicago?

The price you pay for your flight from Portugal to Chicago may vary depending on when you book. For the best chance of a lower fare, look to book 90 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

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

Currently, July is the cheapest month in which you can book a flight from Portugal to Chicago (average of $228). Flying from Portugal to Chicago in March is currently the most expensive (average of $816). 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 Mei 10, 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 24% of weekly flights between Portugal and Chicago have experienced delays in the past year, with the average delay time being 127 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 24% 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 Mei 10, 2026.
Read reviews from past customers who have flown 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.
TAP AIR PORTUGAL
7.2
Good
2,249 reviews

Crew

7.8

Entertainment

6.3

Comfort

7.1

Food

6.2

Overall

7.2

Boarding

7.0

Reviews

1 / 20
8.0
Excellent

Anonymous,Dec 2025

LIS - EWR

Both flights returning to newirk airport was delayed by over a hour with minimum early notification
TAP AIR PORTUGAL
7.2
Good
2,249 reviews
TAP AIR PORTUGAL
7.2
Good
2,249 reviews

Crew

7.8

Entertainment

6.3

Comfort

7.1

Food

6.2

Overall

7.2

Boarding

7.0

Reviews

1 / 20
8.0
Excellent

Anonymous,Dec 2025

LIS - EWR

Both flights returning to newirk airport was delayed by over a hour with minimum early notification

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 13h 35m. Fly via TAP AIR PORTUGAL, Scandinavian Airlines, or United Airlines to get the fastest option. Airlines will cover a distance of 3931 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 $653, our data shows the cheapest flight currently is $586. When looking at the most popular route, (Lisbon Humberto Delgado - Chicago O'Hare Intl), you can expect to pay $756 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, July is the cheapest month in which you can book a flight from Portugal to Chicago (average of $228). Flying from Portugal to Chicago in March is currently the most expensive (average of $816). 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
Benton Harbor
Lansing
Merrillville
Hammond
Porter

Browse thousands of different options on Cheapflights for your next trip

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Top airline flying from Portugal to Chicago

Discover the top airline 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 Mei 10, 2026.
AirlineCheapestAverageFlexibilityOn-time
TAP AIR PORTUGALCheapest$665Average$1,209FlexibilityNo cancel feeOn-timeN/A

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