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Portugal

$229+ Cheap flights from Illinois 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 4/18. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — LIS
Mar 2 — Mar 91
Mon 3/2
Mon 3/9
1 adult, Economy
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Cheap flight deals from Illinois to Portugal

Cheapest flights from Illinois to Portugal
Explore the most affordable flight options available from Illinois to Portugal. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 31, 2026.

This oojo deal was found by Cheapflights users on 1/28. 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 3/47:10 pm
ORD
-
OPO
1 stop13h 55m
TAP AIR PORTUGAL
Tue 3/106:00 pm
OPO
-
ORD
1 stop27h 00m
TAP AIR PORTUGAL
Deal found 1/28$372
This oojo deal was found by Cheapflights users on 1/29. 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 4/176:00 pm
ORD
-
FAO
1 stop23h 50m
TAP AIR PORTUGAL
Thu 4/236:10 pm
FAO
-
ORD
1 stop27h 50m
TAP AIR PORTUGAL
Deal found 1/29$373
This Mytrip deal was found by Cheapflights users on 1/29. 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 4/226:00 pm
ORD
-
FAO
1 stop10h 25m
TAP AIR PORTUGAL
Thu 4/306:10 pm
FAO
-
ORD
1 stop27h 50m
TAP AIR PORTUGAL
Deal found 1/29$386
This Kiwi.com deal was found by Cheapflights users on 1/29. 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.
Sat 4/116:15 pm
ORD
-
OPO
1 stop15h 55m
TAP AIR PORTUGAL
Fri 4/1710:35 pm
OPO
-
ORD
1 stop23h 40m
TAP AIR PORTUGAL
Deal found 1/29$398
This Kiwi.com deal was found by Cheapflights users on 1/29. 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.
Wed 4/156:00 pm
ORD
-
OPO
1 stop19h 00m
TAP AIR PORTUGAL
Sat 4/189:15 pm
OPO
-
ORD
1 stop24h 45m
TAP AIR PORTUGAL
Deal found 1/29$399
This TAP AIR PORTUGAL deal was found by Cheapflights users on 1/29. 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 TAP AIR PORTUGAL is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/208:15 pm
ORD
-
FAO
1 stop21h 35m
TAP AIR PORTUGAL
Fri 3/136:05 am
FAO
-
ORD
1 stop15h 20m
TAP AIR PORTUGAL
Deal found 1/29$400
This Kiwi.com deal was found by Cheapflights users on 1/29. 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.
Sat 4/116:15 pm
ORD
-
OPO
1 stop16h 45m
TAP AIR PORTUGAL
Sat 4/1810:00 am
OPO
-
ORD
1 stop12h 15m
TAP AIR PORTUGAL
Deal found 1/29$401
This Kiwi.com deal was found by Cheapflights users on 1/30. 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.
Wed 4/86:00 pm
ORD
-
OPO
1 stop32h 00m
TAP AIR PORTUGAL
Wed 4/1510:00 am
OPO
-
ORD
1 stop12h 00m
TAP AIR PORTUGAL
Deal found 1/30$402
This oojo deal was found by Cheapflights users on 1/29. 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 3/47:10 pm
ORD
-
OPO
1 stop16h 50m
TAP AIR PORTUGAL
Wed 3/116:55 am
OPO
-
ORD
1 stop14h 05m
TAP AIR PORTUGAL
Deal found 1/29$423
This oojo deal was found by Cheapflights users on 1/29. 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 5/106:00 pm
ORD
-
FNC
1 stop13h 05m
TAP AIR PORTUGAL
Sat 5/169:25 am
FNC
-
ORD
1 stop12h 50m
TAP AIR PORTUGAL
Deal found 1/29$443
This Mytrip deal was found by Cheapflights users on 1/29. 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.
Sun 2/18:25 pm
ORD
-
PDL
1 stop22h 20m
TAP AIR PORTUGAL
Sat 2/77:25 pm
PDL
-
ORD
1 stop24h 20m
TAP AIR PORTUGAL
Deal found 1/29$459
This Mytrip deal was found by Cheapflights users on 1/29. 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 2/117:10 pm
ORD
-
OPO
1 stop11h 55m
TAP AIR PORTUGAL
Sun 2/155:00 am
OPO
-
ORD
1 stop15h 45m
TAP AIR PORTUGAL
Deal found 1/29$468

Find flight deals from Illinois to Portugal

Keep the following information in mind while searching for Illinois to Portugal flight deals. Data was last updated January 31, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$372
(oojo)

One-way from

$229
(Kiwi.com)

Popular in

June

Cheapest in

February

Average price

$589

Good round-trip deal

$471 or less

Good one-way deal

$355 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 Illinois to Portugal
Search Deals
One-way flight from Illinois to Portugal
Search Deals
Highest demand for flights based on searches. 17% potential increase in price ($154 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($19 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 2026
Search Deals
Price to beat on a round-trip flight from Illinois to Portugal.
Search Deals
Price to beat on a one-way flight from Illinois to Portugal.
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Illinois 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 January 31, 2026.
Use the filters below to find and compare flights from Illinois to Portugal that are best for you.

Fly from

Illinois

Fly to

Portugal

Route

Depart

Return

Price

ChicagoPorto

ORD - OPO

ORDOPO

Chicago O'Hare Intl

Wed 3/4

7:10 pm-3:05 pm

1 stop13h 55m

Porto

Tue 3/10

6:00 pm-4:00 pm

1 stop27h 00m

$372

ChicagoFaro

ORD - FAO

ORDFAO

Chicago O'Hare Intl

Wed 4/22

6:00 pm-10:25 am

1 stop10h 25m

Faro

Thu 4/30

6:10 pm-4:00 pm

1 stop27h 50m

$386

ChicagoFaro

ORD - FAO

ORDFAO

Chicago O'Hare Intl

Fri 2/20

8:15 pm-11:50 pm

1 stop21h 35m

Faro

Fri 3/13

6:05 am-4:25 pm

1 stop15h 20m

$400

ChicagoFunchal

ORD - FNC

ORDFNC

Chicago O'Hare Intl

Wed 4/22

6:00 pm-3:35 pm

1 stop15h 35m

Funchal Madeira

Fri 5/1

5:50 am-4:00 pm

1 stop16h 10m

$469

ChicagoLisbon

ORD - LIS

ORDLIS

Chicago O'Hare Intl

Sat 4/18

9:18 pm-10:30 am

1 stop31h 12m

Lisbon Humberto Delgado

Wed 4/29

11:25 am-10:53 am

1 stop29h 28m

$484

ChicagoFaro

ORD - FAO

ORDFAO

Chicago O'Hare Intl

Fri 4/17

6:00 pm-11:50 pm

1 stop23h 50m

Faro

Thu 4/23

6:10 pm-4:00 pm

1 stop27h 50m

$486

ChicagoFaro

ORD - FAO

ORDFAO

Chicago O'Hare Intl

Sun 2/22

7:10 pm-10:50 am

1 stop33h 40m

Faro

Tue 3/10

6:35 pm-5:45 pm

2 stops28h 10m

$487

ChicagoLisbon

ORD - LIS

ORDLIS

Chicago O'Hare Intl

Tue 2/17

3:50 pm-8:10 am

1 stop10h 20m

Lisbon Humberto Delgado

Thu 3/5

5:00 am-1:25 pm

1 stop14h 25m

$487

ChicagoLisbon

ORD - LIS

ORDLIS

Chicago O'Hare Intl

Sun 3/1

8:50 am-10:15 am

1 stop19h 25m

Lisbon Humberto Delgado

Fri 3/13

5:00 am-9:05 pm

1 stop21h 05m

$487

ChicagoFaro

ORD - FAO

ORDFAO

Chicago O'Hare Intl

Fri 4/24

6:00 pm-5:20 pm

1 stop17h 20m

Faro

Sun 5/3

6:05 am-4:00 pm

1 stop15h 55m

$487

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/29

Showing 1-10 of 60 results
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Best time to book a flight from Illinois to Portugal

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

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

Currently, February is the cheapest month in which you can book a flight from Illinois to Portugal (average of $387). Flying from Illinois to Portugal in June is currently the most expensive (average of $690). 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 IL to PT?

Find hourly flight availability from Illinois 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 January 31, 2026.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Illinois to Portugal as you normally would.

Related info for your journey

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

    TAP AIR PORTUGAL, United Airlines, and Scandinavian Airlines can get you from Illinois to Portugal in just under 13h 55m. Your travel time can differ by up to 19h 45m. There are 3931 mi between Illinois and Portugal. Both multi-stop and nonstop flights can be found to your destination and back.

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

    For one-way options, check prices for Iberia. According to our data, you can fly for as low as $130. Users have also found prices from $210 and $245 on British Airways and Icelandair, respectively.

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

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

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

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

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

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

    Currently, February is the cheapest month in which you can book a flight from Illinois to Portugal (average of $387). Flying from Illinois to Portugal in June is currently the most expensive (average of $690). 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.

Alternative routes for Illinois to Portugal

See prices for flight routes from nearby airports that may be better suited for you.
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Top 10 airlines flying from Illinois to Portugal

Discover the top 10 airlines that operate flights from Illinois 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 January 31, 2026.
AirlineCheapestAverageFlexibilityOn-time
Scandinavian AirlinesCheapest$369Average$478FlexibilityNo cancel feeOn-time77%
IcelandairCheapest$371Average$549FlexibilityNo cancel feeOn-time76%
LufthansaCheapest$441Average$671FlexibilityNo cancel feeOn-time76%
TAP AIR PORTUGALCheapest$462Average$827FlexibilityNo cancel feeOn-timeN/A
Air FranceCheapest$470Average$605FlexibilityNo cancel feeOn-time77%
SWISSCheapest$489Average$734FlexibilityNo cancel feeOn-time79%
IberiaCheapest$497Average$739FlexibilityNo cancel feeOn-time77%
Aer LingusCheapest$497Average$881FlexibilityNo cancel feeOn-timeN/A
Virgin AtlanticCheapest$503Average$600FlexibilityNo cancel feeOn-time72%
British AirwaysCheapest$504Average$1,031FlexibilityNo cancel feeOn-time70%

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