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$374+ Cheap flights from Chicago (CHI) to Portugal

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 8/3. Fares are subject to change and may not be available on all flights or dates of travel.
CHI — LIS
Jun 9 — Jun 161
Tue 6/9
Tue 6/16
1 adult, Economy
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Cheap flight deals from Chicago to Portugal

Cheapest flights from Chicago to Portugal
Explore the most affordable flight options available from Chicago to Portugal. Find the lowest fares from popular airlines and budget airlines, with prices last updated on May 10, 2026.

This Gotogate 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/47:00 pm
ORD
-
OPO
1 stop14h 00m
TAP AIR PORTUGAL
Wed 11/115:00 am
OPO
-
ORD
1 stop16h 30m
TAP AIR PORTUGAL
Deal found 5/6$698
This oojo 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/237:15 pm
ORD
-
OPO
1 stop33h 50m
Scandinavian Airlines
Mon 11/3011:55 am
OPO
-
ORD
1 stop34h 50m
Scandinavian Airlines
Deal found 5/9$702
This oojo 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/88:10 pm
ORD
-
OPO
1 stop15h 50m
TAP AIR PORTUGAL
Tue 11/178:00 pm
OPO
-
ORD
1 stop25h 30m
TAP AIR PORTUGAL
Deal found 5/5$703
This oojo 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/27:00 pm
ORD
-
OPO
1 stop14h 00m
TAP AIR PORTUGAL
Wed 12/95:00 am
OPO
-
ORD
1 stop16h 30m
TAP AIR PORTUGAL
Deal found 5/9$704
This oojo 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/178:10 pm
ORD
-
OPO
1 stop31h 35m
Turkish Airlines
Fri 10/910:40 am
OPO
-
ORD
1 stop29h 00m
Turkish Airlines
Deal found 5/6$705
This oojo 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/208:10 pm
ORD
-
OPO
1 stop37h 30m
Turkish Airlines
Thu 10/2910:55 am
OPO
-
ORD
1 stop29h 10m
Turkish Airlines
Deal found 5/5$706
This FlightHub 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/310:30 am
ORD
-
OPO
2 stops18h 35m
Scandinavian Airlines
Sun 11/85:35 pm
OPO
-
ORD
1 stop29h 10m
Scandinavian Airlines
Deal found 5/9$725
This oojo 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/27:15 pm
ORD
-
OPO
1 stop33h 50m
Scandinavian Airlines
Sat 11/712:00 pm
OPO
-
ORD
1 stop34h 45m
Scandinavian Airlines
Deal found 5/9$742
This oojo deal was found by Cheapflights users on 5/7. 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.
Fri 9/48:10 pm
ORD
-
OPO
1 stop37h 30m
Turkish Airlines
Tue 9/2210:40 am
OPO
-
ORD
1 stop37h 35m
Turkish Airlines
Deal found 5/7$743
This Gotogate deal was found by Cheapflights users on 5/8. 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.
Sun 11/18:10 pm
ORD
-
FNC
1 stop15h 00m
TAP AIR PORTUGAL
Sat 11/146:10 pm
FNC
-
ORD
1 stop27h 20m
TAP AIR PORTUGAL
Deal found 5/8$748
This oojo 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/311:25 am
ORD
-
OPO
1 stop22h 20m
Turkish Airlines
Wed 9/1610:45 am
OPO
-
ORD
1 stop28h 55m
Turkish Airlines
Deal found 5/6$749
This Mytrip deal was found by Cheapflights users on 5/7. 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 11/114:20 pm
ORD
-
OPO
1 stop13h 20m
Multiple Airlines
Thu 11/196:00 am
OPO
-
ORD
2 stops33h 00m
Multiple Airlines
Deal found 5/7$752

Find flight deals from Chicago to Portugal

Keep the following information in mind while searching for Chicago to Portugal flight deals. Data was last updated May 10, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$698
(Gotogate)

One-way from

$374
(Kiwi.com)

Popular in

June

Cheapest in

February

Average price

$989

Good round-trip deal

$835 or less

Good one-way deal

$486 or less
Provider with most accurate pricing for Chicago (CHI)-Lisbon Humberto Delgado flight deals.
Search Deals
Provider most trusted by Cheapflights users for Chicago (CHI)-Lisbon Humberto Delgado flights.
Search Deals
From Chicago (CHI) to Portugal
Search Deals
One-way flight from Chicago (CHI) to Portugal
Search Deals
Highest demand for flights based on searches. 24% potential increase in price ($250 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($26 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in May 2026
Search Deals
Price to beat on a round-trip flight from Chicago (CHI) to Portugal.
Search Deals
Price to beat on a one-way flight from Chicago (CHI) to Portugal.
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Chicago to Portugal 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 May 10, 2026.
Use the filters below to find and compare flights from Chicago to Portugal that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

ChicagoLisbon

MDW - LIS

MDWLIS

Chicago Midway

Wed 10/28

1:05 pm-10:35 am

2 stops16h 30m

Lisbon Humberto Delgado

Tue 11/3

5:00 am-6:37 pm

2 stops19h 37m

$823

ChicagoPonta Delgada

MDW - PDL

MDWPDL

Chicago Midway

Sat 6/6

10:15 am-6:40 am

1 stop15h 25m

Ponta Delgada Nordela

Sat 6/13

11:30 am-9:35 am

1 stop27h 05m

$865

ChicagoPonta Delgada

ORD - PDL

ORDPDL

Chicago O'Hare Intl

Mon 5/25

9:34 pm-8:40 am

1 stop30h 06m

Ponta Delgada Nordela

Wed 6/3

11:00 am-9:43 am

1 stop27h 43m

$952

ChicagoLisbon

ORD - LIS

ORDLIS

Chicago O'Hare Intl

Mon 7/20

1:00 pm-8:00 am

1 stop13h 00m

Lisbon Humberto Delgado

Tue 7/28

7:45 pm-2:30 pm

1 stop24h 45m

$968

ChicagoLisbon

ORD - LIS

ORDLIS

Chicago O'Hare Intl

Tue 7/21

9:40 pm-10:30 am

1 stop30h 50m

Lisbon Humberto Delgado

Tue 8/4

11:25 am-7:50 am

1 stop26h 25m

$970

ChicagoFaro

ORD - FAO

ORDFAO

Chicago O'Hare Intl

Wed 8/5

4:50 pm-2:00 pm

1 stop15h 10m

Faro

Tue 8/11

8:20 pm-2:30 pm

1 stop24h 10m

$972

ChicagoPorto

MDW - OPO

MDWOPO

Chicago Midway

Sun 7/12

9:49 am-10:25 am

2 stops18h 36m

Porto

Thu 7/23

5:00 am-6:25 pm

2 stops19h 25m

$974

ChicagoLisbon

ORD - LIS

ORDLIS

Chicago O'Hare Intl

Sat 7/25

9:40 pm-10:30 am

1 stop30h 50m

Lisbon Humberto Delgado

Fri 8/7

1:00 pm-9:00 am

1 stop26h 00m

$975

ChicagoLisbon

MDW - LIS

MDWLIS

Chicago Midway

Tue 10/13

12:30 pm-11:15 am

2 stops16h 45m

Lisbon Humberto Delgado

Thu 10/22

5:00 am-6:37 pm

2 stops19h 37m

$979

ChicagoLisbon

ORD - LIS

ORDLIS

Chicago O'Hare Intl

Sun 7/5

3:40 pm-9:20 am

1 stop11h 40m

Lisbon Humberto Delgado

Wed 7/29

5:05 am-11:31 pm

2 stops24h 26m

$979

Flights are sorted by cheapest round-trip flights first.

Deals found on 5/8

Showing 1-10 of 60 resultsSorted by cheapest first
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Best time to book a flight from Chicago to Portugal

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

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

To ensure you get the cheapest price possible for a flight from Chicago to Portugal, you should look to book at least 26 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 Portugal?

Currently, February is the cheapest month in which you can book a flight from Chicago to Portugal (average of $360). Flying from Chicago to Portugal in August is currently the most expensive (average of $3,931). 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 PT?

Find hourly flight availability from Chicago to Portugal. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated May 10, 2026.

When flying from Chicago to Portugal, 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 Chicago to Portugal delayed?

About 38% of weekly flights between Chicago and Portugal have experienced delays in the past year, with the average delay time being 135 minutes.

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

Historically, flights departing in the early afternoon are less likely to be delayed, whereas flights leaving in the evening tend to experience delays more often.

What day of the week experiences the fewest flight delays on this route?

Wednesday tends to have the lowest number of delays on this route, whereas Tuesday has historically faced a higher average of delays compared to other days of the week.

Which airline has the best punctuality record on Chicago to Portugal flights?

Over the last year, TAP AIR PORTUGAL have had the lowest number of delays on this route, with just 38% of flights being delayed.

Reviews of airlines servicing Portugal

Get insights into the airlines that provide service to Portugal. 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 Portugal. Reviews last updated May 10, 2026.
Read reviews from past customers who have flown United Airlines,Aer Lingus, andTAP AIR PORTUGAL from Chicago to Portugal. 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
9,695 reviews

Food

6.6

Crew

8.1

Boarding

7.7

Overall

7.4

Comfort

7.3

Entertainment

7.1

Reviews

1 / 20
8.0
Excellent

Anonymous,Apr 2026

DFW - EWR

The flight was on time. Crew was friendly. Will fly again. The seats was comfortable.
United Airlines
7.4
Good
9,695 reviews
United Airlines
7.4
Good
9,695 reviews

Food

6.6

Crew

8.1

Boarding

7.7

Overall

7.4

Comfort

7.3

Entertainment

7.1

Reviews

1 / 20
8.0
Excellent

Anonymous,Apr 2026

DFW - EWR

The flight was on time. Crew was friendly. Will fly again. The seats was comfortable.
Aer Lingus
7.3
Good
1,551 reviews
United Airlines
7.4
Good
9,695 reviews

Food

6.6

Crew

8.1

Boarding

7.7

Overall

7.4

Comfort

7.3

Entertainment

7.1

Reviews

1 / 20
8.0
Excellent

Anonymous,Apr 2026

DFW - EWR

The flight was on time. Crew was friendly. Will fly again. The seats was comfortable.
TAP AIR PORTUGAL
7.2
Good
2,249 reviews
United Airlines
7.4
Good
9,695 reviews

Food

6.6

Crew

8.1

Boarding

7.7

Overall

7.4

Comfort

7.3

Entertainment

7.1

Reviews

1 / 20
8.0
Excellent

Anonymous,Apr 2026

DFW - EWR

The flight was on time. Crew was friendly. Will fly again. The seats was comfortable.
Air Canada
7.1
Good
11,012 reviews
United Airlines
7.4
Good
9,695 reviews

Food

6.6

Crew

8.1

Boarding

7.7

Overall

7.4

Comfort

7.3

Entertainment

7.1

Reviews

1 / 20
8.0
Excellent

Anonymous,Apr 2026

DFW - EWR

The flight was on time. Crew was friendly. Will fly again. The seats was comfortable.
British Airways
6.7
Okay
7,964 reviews
United Airlines
7.4
Good
9,695 reviews

Food

6.6

Crew

8.1

Boarding

7.7

Overall

7.4

Comfort

7.3

Entertainment

7.1

Reviews

1 / 20
8.0
Excellent

Anonymous,Apr 2026

DFW - EWR

The flight was on time. Crew was friendly. Will fly again. The seats was comfortable.

Related info for your journey

Find useful and relevant information for your journey from Chicago to Portugal. 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 Chicago to Portugal?

    For as low as $968, Delta can have you in Portugal from Chicago in 13h. There are 3996 mi between Chicago and Portugal. This flight may include one or multiple stops.

  • What are the cheapest airlines to fly from Chicago to Portugal one-way?

    To fly one-way, consider booking your trip with Iberia, which is currently one of the cheapest options available, starting at $130. British Airways flights start at $210 while deals on American Airlines start at $276 one-way.

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

    The most popular route from Chicago to Portugal is Chicago O'Hare Intl - Lisbon Humberto Delgado. You may also consider Chicago Midway - Lisbon Humberto Delgado or Chicago O'Hare Intl - Porto.

  • What are the cheapest flights from Chicago to Portugal?

    On average you can expect to pay $1,119 for a flight from Chicago to Portugal. The cheapest flight overall is $371 while the most popular route, (Chicago O'Hare Intl - Lisbon Humberto Delgado) is currently priced at $628.

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

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

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

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

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

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

    Currently, February is the cheapest month in which you can book a flight from Chicago to Portugal (average of $360). Flying from Chicago to Portugal in August is currently the most expensive (average of $3,931). 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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Top 10 airlines flying from Chicago to Portugal

Discover the top 10 airlines that operate flights from Chicago to Portugal. 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 May 10, 2026.
AirlineCheapestAverageFlexibilityOn-time
Scandinavian AirlinesCheapest$369Average$485FlexibilityNo cancel feeOn-time77%
IcelandairCheapest$371Average$535FlexibilityNo cancel feeOn-time76%
TAP AIR PORTUGALCheapest$450Average$818FlexibilityNo cancel feeOn-timeN/A
Air FranceCheapest$470Average$625FlexibilityNo cancel feeOn-time77%
LufthansaCheapest$483Average$700FlexibilityNo cancel feeOn-time76%
SWISSCheapest$489Average$711FlexibilityNo cancel feeOn-time79%
IberiaCheapest$496Average$742FlexibilityNo cancel feeOn-time77%
Aer LingusCheapest$497Average$873FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$497Average$846FlexibilityNo cancel feeOn-time69%
Virgin AtlanticCheapest$503Average$741FlexibilityNo cancel feeOn-time72%

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