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$336+ 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 4/8. Fares are subject to change and may not be available on all flights or dates of travel.
LIS — CHI
Jan 22 — Jan 291
Thu 1/22
Thu 1/29
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 December 23, 2025.

This Iberia deal was found by Cheapflights users on 12/21. 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 Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/297:05 amLIS - ORD
1 stop14h 20mMultiple Airlines
Thu 3/55:40 pmORD - LIS
1 stop16h 25mMultiple Airlines
Deal found 12/21$720
This Delta deal was found by Cheapflights users on 12/21. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/295:00 amLIS - ORD
1 stop15h 20mDelta
Thu 3/52:05 pmORD - LIS
2 stops19h 05mDelta
Deal found 12/21$738
This FlightHub deal was found by Cheapflights users on 12/21. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/2212:40 pmLIS - ORD
2 stops58h 05mScandinavian Airlines
Sun 1/257:10 pmORD - LIS
1 stop14h 55mScandinavian Airlines
Deal found 12/21$794
This United Airlines deal was found by Cheapflights users on 12/21. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/2911:55 amLIS - ORD
2 stops15h 20mUnited Airlines
Thu 3/511:05 amORD - LIS
2 stops14h 50mUnited Airlines
Deal found 12/21$844
This oojo deal was found by Cheapflights users on 12/21. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/224:05 pmLIS - ORD
1 stop24h 00mTurkish Airlines
Sun 1/2511:50 amORD - LIS
1 stop16h 50mTurkish Airlines
Deal found 12/21$846
This Mytrip deal was found by Cheapflights users on 12/21. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/2612:50 pmLIS - ORD
2 stops33h 55mMultiple Airlines
Fri 1/97:20 pmORD - LIS
2 stops19h 55mMultiple Airlines
Deal found 12/21$855
This Delta deal was found by Cheapflights users on 12/21. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/265:30 amLIS - ORD
1 stop15h 40mDelta
Fri 1/911:05 amORD - LIS
2 stops18h 15mDelta
Deal found 12/21$861
This British Airways deal was found by Cheapflights users on 12/22. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/2611:05 amLIS - ORD
1 stop15h 32mBritish Airways
Thu 1/18:40 pmORD - LIS
1 stop15h 20mBritish Airways
Deal found 12/22$863
This Delta deal was found by Cheapflights users on 12/21. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/265:30 amLIS - ORD
1 stop15h 40mDelta
Thu 1/16:02 pmORD - LIS
2 stops15h 08mDelta
Deal found 12/21$867
This Delta deal was found by Cheapflights users on 12/21. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/265:30 amLIS - MDW
2 stops17h 56mDelta
Fri 1/96:45 amMDW - LIS
2 stops19h 15mDelta
Deal found 12/21$870
This American Airlines deal was found by Cheapflights users on 12/22. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/2611:05 amLIS - ORD
2 stops15h 45mAmerican Airlines
Thu 1/18:40 pmORD - LIS
1 stop15h 20mAmerican Airlines
Deal found 12/22$873
This Delta deal was found by Cheapflights users on 12/20. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/265:30 amLIS - MDW
2 stops17h 56mDelta
Thu 1/19:50 amMDW - LIS
2 stops18h 45mDelta
Deal found 12/20$1,055

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 December 23, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$455
(Vliegwinkel)

One-way from

$336
(Kiwi.com)

Popular in

January

Cheapest in

February

Average price

$767

Good round-trip deal

$529 or less

Good one-way deal

$549 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
Highest demand for flights based on searches. 4% potential increase in price ($33 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($32 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals
Price to beat on a round-trip flight from Portugal to Chicago (CHI).
Search Deals
Price to beat on a one-way flight from Portugal to Chicago (CHI).
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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 December 23, 2025.
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

LisbonChicago

LIS - ORD

LISORD

Lisbon Humberto Delgado

Sat 1/17

11:20 am-11:06 am

1 stop29h 46m

Chicago O'Hare Intl

Sun 1/18

3:44 pm-8:10 am

1 stop10h 26m

$504

LisbonChicago

LIS - ORD

LISORD

Lisbon Humberto Delgado

Wed 1/14

4:55 pm-4:45 pm

1 stop29h 50m

Chicago O'Hare Intl

Sat 1/17

7:20 pm-4:05 pm

1 stop14h 45m

$507

LisbonChicago

LIS - ORD

LISORD

Lisbon Humberto Delgado

Wed 2/18

4:55 pm-4:45 pm

1 stop29h 50m

Chicago O'Hare Intl

Sun 2/22

7:10 pm-4:30 pm

1 stop15h 20m

$542

LisbonChicago

LIS - ORD

LISORD

Lisbon Humberto Delgado

Thu 2/19

1:00 pm-4:45 pm

1 stop33h 45m

Chicago O'Hare Intl

Thu 2/26

7:20 pm-3:50 pm

1 stop14h 30m

$565

LisbonChicago

LIS - ORD

LISORD

Lisbon Humberto Delgado

Thu 2/5

6:55 pm-9:35 pm

2 stops32h 40m

Chicago O'Hare Intl

Thu 2/12

7:20 pm-3:50 pm

1 stop14h 30m

$577

LisbonChicago

LIS - ORD

LISORD

Lisbon Humberto Delgado

Fri 1/30

6:55 am-9:35 pm

2 stops20h 40m

Chicago O'Hare Intl

Sun 2/15

7:10 pm-4:05 pm

1 stop14h 55m

$618

LisbonChicago

LIS - ORD

LISORD

Lisbon Humberto Delgado

Tue 2/17

12:50 pm-4:45 pm

1 stop33h 55m

Chicago O'Hare Intl

Sat 2/21

7:20 pm-5:10 pm

1 stop15h 50m

$618

LisbonChicago

LIS - ORD

LISORD

Lisbon Humberto Delgado

Fri 1/30

6:55 am-9:35 pm

2 stops20h 40m

Chicago O'Hare Intl

Sun 2/15

7:10 pm-4:05 pm

1 stop14h 55m

$618

LisbonChicago

LIS - ORD

LISORD

Lisbon Humberto Delgado

Wed 2/18

4:55 pm-4:45 pm

1 stop29h 50m

Chicago O'Hare Intl

Fri 2/27

7:20 pm-8:55 am

1 stop31h 35m

$653

LisbonChicago

LIS - ORD

LISORD

Lisbon Humberto Delgado

Sun 2/22

6:00 pm-4:45 pm

1 stop28h 45m

Chicago O'Hare Intl

Wed 2/25

7:20 pm-8:55 am

1 stop31h 35m

$659

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/21

Showing 1-10 of 58 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.

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 December 23, 2025.

It’s optimal to fly from Portugal to Chicago in the evening. By choosing this option you can save up to 46% on the cost of your flight, compared to a flight in the afternoon.

How often are flights from Portugal to Chicago delayed?

About 23% of weekly flights between Portugal and Chicago have experienced delays in the past year, with the average delay time being 135 minutes.

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

Historically, flights departing in the morning are less likely to be delayed, whereas flights leaving in the early afternoon 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 23% 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 December 23, 2025.
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
7.2
Good
11,054 reviews

Boarding

7.5

Crew

8.0

Comfort

7.2

Food

6.4

Overall

7.2

Entertainment

6.9

Reviews

1 / 20
10.0
Excellent

Jeremy,Dec 2025

OKC - CLT

Was an okay flight. Had extra seat empty beside me so was able to stretch a bit
American Airlines
7.2
Good
11,054 reviews
American Airlines
7.2
Good
11,054 reviews

Boarding

7.5

Crew

8.0

Comfort

7.2

Food

6.4

Overall

7.2

Entertainment

6.9

Reviews

1 / 20
10.0
Excellent

Jeremy,Dec 2025

OKC - CLT

Was an okay flight. Had extra seat empty beside me so was able to stretch a bit
TAP AIR PORTUGAL
7.2
Good
2,096 reviews
American Airlines
7.2
Good
11,054 reviews

Boarding

7.5

Crew

8.0

Comfort

7.2

Food

6.4

Overall

7.2

Entertainment

6.9

Reviews

1 / 20
10.0
Excellent

Jeremy,Dec 2025

OKC - CLT

Was an okay flight. Had extra seat empty beside me so was able to stretch a bit

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 12h 35m. Fly via United Airlines, Scandinavian Airlines, or American 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 $401. 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 $759, our data shows the cheapest flight currently is $529. When looking at the most popular route, (Lisbon Humberto Delgado - Chicago O'Hare Intl), you can expect to pay $462 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 December 23, 2025.
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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