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$274+ Cheap flights from Chicago (CHI) to Lisbon (LIS)

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 10/12. Fares are subject to change and may not be available on all flights or dates of travel.
CHI — LIS
Aug 25 — Sep 11
Mon 8/25
Mon 9/1
1 adult, Economy
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Cheapflights Tip: The best prices from Chicago to Lisbon Humberto Delgado are usually found in February or January, booked 8 days in advance, depart on a Wednesday or Sunday and return on a Saturday

Cheap flight deals from Chicago to Lisbon

Discover tips and strategies to find the most affordable flight options for your journey from Chicago (CHI) to Lisbon (LIS). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated August 20, 2025.

Round-trip from

$536
(Icelandair)

One-way from

$274
(Kiwi.com)

Popular in

June

Cheapest in

February

Average price

$766

Good round-trip deal

$389 or less

Good one-way deal

$235 or less
From Chicago (CHI) to Lisbon Humberto Delgado
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One-way flight from Chicago (CHI) to Lisbon Humberto Delgado
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Highest demand for flights based on searches. 17% potential increase in price ($152 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($17 potential savings vs. average RT price).
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Average for round-trip flights in August 2025
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Price to beat on a round-trip flight from Chicago (CHI) to Lisbon Humberto Delgado.
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Price to beat on a one-way flight from Chicago (CHI) to Lisbon Humberto Delgado.
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Find flight deals from Chicago to Lisbon

Cheapest flights from Chicago to Lisbon
Explore the most affordable flight options available from Chicago to Lisbon. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 20, 2025.

This Icelandair deal was found by Cheapflights users on 8/20. 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 Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/110:15 pmORD - LIS
1 stop17h 05mIcelandair
Sun 10/510:25 pmLIS - ORD
1 stop25h 50mIcelandair
Deal found 8/20$536
This CheapOair deal was found by Cheapflights users on 8/19. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/128:25 pmORD - LIS
1 stop32h 40mMultiple Airlines
Tue 10/215:05 amLIS - ORD
1 stop13h 50mMultiple Airlines
Deal found 8/19$537
This Orbitz deal was found by Cheapflights users on 8/19. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/198:40 amORD - LIS
1 stop18h 40mMultiple Airlines
Tue 10/283:25 pmLIS - ORD
1 stop30h 55mMultiple Airlines
Deal found 8/19$538
This United Airlines deal was found by Cheapflights users on 8/19. 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.
Wed 11/121:00 pmORD - LIS
2 stops13h 10mUnited Airlines
Thu 11/205:00 amLIS - ORD
2 stops18h 00mUnited Airlines
Deal found 8/19$540
This United Airlines deal was found by Cheapflights users on 8/20. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/258:25 pmORD - LIS
1 stop31h 55mUnited Airlines
Mon 11/35:00 amLIS - ORD
1 stop14h 10mUnited Airlines
Deal found 8/20$541
This Icelandair deal was found by Cheapflights users on 8/20. 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 Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/207:25 pmORD - LIS
1 stop19h 55mIcelandair
Thu 10/210:20 pmLIS - ORD
1 stop25h 55mIcelandair
Deal found 8/20$543
This Priceline deal was found by Cheapflights users on 8/19. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/188:25 pmORD - LIS
1 stop32h 40mMultiple Airlines
Tue 10/283:25 pmLIS - ORD
1 stop30h 55mMultiple Airlines
Deal found 8/19$544
This oojo deal was found by Cheapflights users on 8/19. 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.
Thu 11/207:20 pmORD - LIS
1 stop14h 45mScandinavian Airlines
Sun 11/304:55 pmLIS - ORD
1 stop29h 50mScandinavian Airlines
Deal found 8/19$545
This United Airlines deal was found by Cheapflights users on 8/20. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/612:50 pmORD - LIS
1 stop14h 30mUnited Airlines
Thu 11/136:10 amLIS - ORD
1 stop18h 15mUnited Airlines
Deal found 8/20$546
This Booking.com deal was found by Cheapflights users on 8/18. 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.
Sat 10/258:25 pmORD - LIS
1 stop31h 55mMultiple Airlines
Sat 11/85:00 amLIS - ORD
2 stops19h 26mMultiple Airlines
Deal found 8/18$547
This Air Canada deal was found by Cheapflights users on 8/18. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/1012:50 pmORD - LIS
2 stops14h 30mAir Canada
Mon 11/175:00 amLIS - ORD
2 stops20h 30mAir Canada
Deal found 8/18$548
This United deal was found by Cheapflights users on 8/20. 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 United is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/19:10 pmORD - LIS
1 stop32h 05mMultiple Airlines
Sat 11/155:00 amLIS - ORD
2 stops19h 26mMultiple Airlines
Deal found 8/20$549

Cheapflights Fare Finder

 
Customize your flight search to find flights from Chicago to Lisbon 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 August 20, 2025.
Use the filters below to find and compare flights from Chicago to Lisbon that are best for you.

Fly from

Chicago

Fly to

Lisbon

Route

Depart

Return

Price

ChicagoLisbon

ORD - LIS

ORDLIS

Chicago O'Hare Intl

Wed 10/1

10:15 pm-9:20 pm

1 stop17h 05m

Lisbon Humberto Delgado

Sun 10/5

10:25 pm-6:15 pm

1 stop25h 50m

$536

ChicagoLisbon

ORD - LIS

ORDLIS

Chicago O'Hare Intl

Wed 11/12

6:20 pm-10:15 am

1 stop9h 55m

Lisbon Humberto Delgado

Sat 11/22

5:00 am-1:10 pm

1 stop14h 10m

$539

ChicagoLisbon

ORD - LIS

ORDLIS

Chicago O'Hare Intl

Wed 11/12

1:00 pm-8:10 am

2 stops13h 10m

Lisbon Humberto Delgado

Thu 11/20

5:00 am-5:00 pm

2 stops18h 00m

$540

ChicagoLisbon

ORD - LIS

ORDLIS

Chicago O'Hare Intl

Sun 10/19

8:40 am-9:20 am

1 stop18h 40m

Lisbon Humberto Delgado

Tue 10/28

5:00 am-11:43 pm

2 stops23h 43m

$541

ChicagoLisbon

ORD - LIS

ORDLIS

Chicago O'Hare Intl

Sat 10/25

8:25 pm-9:20 am

1 stop31h 55m

Lisbon Humberto Delgado

Mon 11/3

5:00 am-1:10 pm

1 stop14h 10m

$541

ChicagoLisbon

ORD - LIS

ORDLIS

Chicago O'Hare Intl

Sat 9/27

7:25 pm-9:20 pm

1 stop19h 55m

Lisbon Humberto Delgado

Sun 10/5

10:25 pm-6:15 pm

1 stop25h 50m

$543

ChicagoLisbon

ORD - LIS

ORDLIS

Chicago O'Hare Intl

Sat 9/20

7:25 pm-9:20 pm

1 stop19h 55m

Lisbon Humberto Delgado

Thu 10/2

10:20 pm-6:15 pm

1 stop25h 55m

$543

ChicagoLisbon

ORD - LIS

ORDLIS

Chicago O'Hare Intl

Tue 11/4

11:15 am-8:10 am

2 stops14h 55m

Lisbon Humberto Delgado

Sat 11/15

5:00 am-1:10 pm

1 stop14h 10m

$544

ChicagoLisbon

ORD - LIS

ORDLIS

Chicago O'Hare Intl

Sat 11/1

9:10 pm-10:15 am

1 stop32h 05m

Lisbon Humberto Delgado

Sat 11/15

5:00 am-1:10 pm

1 stop14h 10m

$545

ChicagoLisbon

ORD - LIS

ORDLIS

Chicago O'Hare Intl

Sat 10/18

10:00 am-9:20 am

2 stops41h 20m

Lisbon Humberto Delgado

Tue 10/28

5:00 am-9:38 pm

2 stops21h 38m

$545

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/18

Showing 1-10 of 41 results
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The best insider tips for Chicago to Lisbon flights

Snippets provided in this section are AI-generated based on a summarization of Cheapflights-commissioned articles. The articles are presented as-is, for general informational purposes only, and may not be up-to-date. The opinions contained in the articles are original to the author and reflect their authentic experience, which may vary significantly from the experience of others.
Cheapflights partnered with top experts to bring you the best recommendations for your Chicago to Lisbon trip
Airports
ORD

Prepare for long walks between terminals at ORD. Know your airline's terminal to avoid unnecessary travel.

Read more about ORDby Ramsey Qubein
LIS

From LIS, the metro line takes 20 minutes to reach downtown Lisbon, offering a convenient and cost-effective option.

Read more about LISby Ramsey Qubein
Our travel experts
Ramsey Qubein

Ramsey Qubein

Expert on ORD and LIS

Ramsey Qubein

Ramsey Qubein

An avid traveler and aviation expert who has visited 173 countries, all 50 states and seven continents, Ramsey Qubein flies nearly 400,000 miles a year. As a North Carolina-based freelance journalist for publications including Conde Nast Traveler, Forbes, USA Today and Bloomberg among others, he explores the latest trends in aviation, hospitality, cruises and business.

Read more

Best time to book a flight from Chicago to Lisbon

Have a flexible travel schedule? Discover the best time to fly to Lisbon 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 Lisbon

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

Use this chart to determine the optimal time to book a round-trip flight from Chicago to Lisbon. Price data was last updated on August 8, 2025.

To ensure you get the cheapest price possible for a flight from Chicago to Lisbon, you should look to book at least 8 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

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

Currently, January is the cheapest month in which you can book a flight from Chicago to Lisbon (average of $612). Flying from Chicago to Lisbon in June is currently the most expensive (average of $1,127). 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 LIS?

Find hourly flight availability from Chicago to Lisbon. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated August 20, 2025.

It’s typically best to fly out from Chicago to Lisbon in the afternoon. Doing so could potentially save you 33% on the flight price compared to flying at noon, which is usually more expensive.

What is the cheapest day to fly from Chicago to Lisbon?

Use this chart to determine the cheapest time to fly round-trip from Chicago to Lisbon. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their Chicago to Lisbon flight should consider departing on Wednesday evenings when fares are most often at their lowest. Saturday mornings flights should be avoided if possible as fares are typically the most expensive at this time.

What’s the top layover airport for flights from Chicago to Lisbon?

Share of 1-stop round-trip flights from Chicago to Lisbon chosen by Cheapflights users in the past 12 months, using the same layover each way.

Madrid (MAD) – chosen by Cheapflights users on 33% of 1-stop itineraries from Chicago to Lisbon on Cheapflights.

What’s the cheapest layover airport for flights from Chicago to Lisbon?

Average round-trip fare for 1-stop flights from Chicago to Lisbon, chosen by Cheapflights users in the past 12 months, with the same layover each way.

Istanbul (IST) is the most affordable 1-stop option, with an average round-trip price of $582.

What’s the fastest layover option from Chicago to Lisbon?

Shortest average travel time for 1-stop one-way flights from Chicago to Lisbon, based on itineraries clicked by Cheapflights users over the past 12 months, grouped by layover airport.

Flights via London (LHR) have the shortest average one-way travel time for 1-stop routes: 12h 20m.

Which airport typically offers the quickest layover for flights from Chicago to Lisbon?

Average layover duration for 1-stop one-way flights from Chicago to Lisbon, chosen by Cheapflights users in the last 12 months, grouped by stopover airport.

Flights via London (LHR) offer the fastest connection on this route, with an average layover time of 1h 48m.

Reviews of airlines servicing Lisbon

Get insights into the airlines that provide service to Lisbon. 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 Lisbon. Reviews last updated August 20, 2025.
Read reviews from past customers who have flown United Airlines, American Airlines, and Air Canada from Chicago to Lisbon. 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
8,928 reviews

Overall

7.4

Food

6.6

Boarding

7.7

Crew

8.1

Entertainment

7.1

Comfort

7.3

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??
United Airlines
7.4
Good
8,928 reviews
United Airlines
7.4
Good
8,928 reviews

Overall

7.4

Food

6.6

Boarding

7.7

Crew

8.1

Entertainment

7.1

Comfort

7.3

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??
American Airlines
7.2
Good
10,000 reviews
United Airlines
7.4
Good
8,928 reviews

Overall

7.4

Food

6.6

Boarding

7.7

Crew

8.1

Entertainment

7.1

Comfort

7.3

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??
Air Canada
7.1
Good
10,000 reviews
United Airlines
7.4
Good
8,928 reviews

Overall

7.4

Food

6.6

Boarding

7.7

Crew

8.1

Entertainment

7.1

Comfort

7.3

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??
TAP AIR PORTUGAL
7.1
Good
1,956 reviews
United Airlines
7.4
Good
8,928 reviews

Overall

7.4

Food

6.6

Boarding

7.7

Crew

8.1

Entertainment

7.1

Comfort

7.3

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??
British Airways
6.7
Okay
7,289 reviews
United Airlines
7.4
Good
8,928 reviews

Overall

7.4

Food

6.6

Boarding

7.7

Crew

8.1

Entertainment

7.1

Comfort

7.3

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??

Related info for your journey

Find useful and relevant information for your journey from Chicago to Lisbon. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to Lisbon from Chicago?

    If you book a flight to Lisbon from Chicago, you will be flying to Humberto Delgado, which is the city’s only airport. Lisbon Humberto Delgado (LIS) is located 4.2 mi from the center of Lisbon. There are 0 flights from Chicago to Humberto Delgado per day from 18 different airlines.

  • How long is the flight from Chicago to Lisbon?

    Icelandair, United Airlines, and Delta can get you from Chicago to Lisbon in just under 9h 55m. Your travel time can differ by up to 7h 36m. Airlines will cover a distance of 3996 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • What are the cheapest airlines flying from Chicago to Lisbon round-trip?

    Flying on Scandinavian Airlines is currently your cheapest option to Lisbon, with prices starting at $411. Additional round-trip tickets that might be worth considering are offered by Icelandair and Finnair, with the lowest prices starting at $444 and $463, respectively. Scandinavian Airlines is priced at 44% lower than the current average price of a flight leaving 3 months from now.

  • What are the cheapest flights from Chicago to Lisbon?

    Looking for the cheapest flight from Chicago to Lisbon? While on average our users pay $1,282, our data indicates the cheapest price to be $180. The most popular route (Chicago O'Hare Intl - Lisbon Humberto Delgado), is priced around $369.

  • Where are the most common layover locations when flying from Chicago to Lisbon?

    The most popular layover on flights from Chicago to Lisbon is London. Toronto sees the second most layovers for non-direct flights flying from Chicago to Lisbon.

  • What are some popular things to do or see while on a layover in London?

    Hyde Park, Buckingham Palace, and Piccadilly Circus are the most popular attractions in London if you're in need of something to do during your layover. Hyde Park, Buckingham Palace, and Piccadilly Circus can be visited by traveling about 12.5 mi, 13.7 mi, and 14.1 mi respectively from London Heathrow. Those landing in London looking to spend some time exploring during their layover can rent a car for about $41 per day.

  • What are some popular points of interest to see during a layover in Toronto?

    Union Station, CN Tower, and Hockey Hall of Fame are currently the most popular points of interest in Toronto at the moment. Union Station, CN Tower, and Hockey Hall of Fame are located about 12.1 mi, 11.9 mi, and 12.3 mi, respectively from Toronto Pearson Intl. Travelers in need of a car in Toronto can rent one for about $48 per day.

  • Where are the least popular layover locations for Chicago to Lisbon flights?

    The least popular layover on flights from Chicago to Lisbon is Philadelphia.

  • Can I find deals for flights from Chicago to Lisbon that include hotel bookings?

    Yes. In addition to deals on Chicago to Lisbon flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Chicago to Lisbon?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Chicago to Lisbon.

  • Can I find deals for business class flights from Chicago to Lisbon?

    Yes. Cheapflights offers flight deals from Chicago to Lisbon 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 Lisbon?

    Currently, January is the cheapest month in which you can book a flight from Chicago to Lisbon (average of $612). Flying from Chicago to Lisbon in June is currently the most expensive (average of $1,127). 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 Lisbon?

Book flights to Lisbon if you plan to visit one of these locations
Sintra
Beja
Fátima
Oeiras
Nazaré
Ericeira
Costa da Caparica
Torres Vedras
Sesimbra
Colares

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Top 10 airlines flying from Chicago to Lisbon

Discover the top 10 airlines that operate flights from Chicago to Lisbon. 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 August 20, 2025.
AirlineCheapestAverageFlexibilityOn-time
Scandinavian AirlinesCheapest$411Average$659FlexibilityNo cancel feeOn-time77%
IcelandairCheapest$444Average$561FlexibilityNo cancel feeOn-time76%
FinnairCheapest$463Average$731FlexibilityNo cancel feeOn-time76%
TAP AIR PORTUGALCheapest$483Average$819FlexibilityNo cancel feeOn-timeN/A
Virgin AtlanticCheapest$490Average$702FlexibilityNo cancel feeOn-time72%
Aer LingusCheapest$494Average$692FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$511Average$757FlexibilityNo cancel feeOn-time71%
SWISSCheapest$517Average$682FlexibilityNo cancel feeOn-time79%
KLMCheapest$527Average$620FlexibilityNo cancel feeOn-time75%
United AirlinesCheapest$537Average$755FlexibilityNo cancel feeOn-time69%

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