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$359+ Cheap flights from Portugal to Illinois

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 2/4. Fares are subject to change and may not be available on all flights or dates of travel.
LIS — ORD
Nov 26 — Dec 31
Tue 11/26
Tue 12/3
1 adult, Economy
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Cheap flight deals from Portugal to Illinois

Discover tips and strategies to find the most affordable flight options for your journey from Portugal (PT0) to Illinois (USIL). 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 November 21, 2024.

Find flight deals from Portugal to Illinois

Cheapest flights from Portugal to Illinois
Explore the most affordable flight options available from Portugal to Illinois. Find the lowest fares from popular airlines and budget airlines, with prices last updated on November 21, 2024.

This FlightHub deal was found by Cheapflights users on 11/20. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/910:50 amLIS - ORD
1 stop13h 05mAer Lingus
Thu 12/123:55 pmORD - LIS
1 stop12h 15mAer Lingus
Deal found 11/20$584
This Mytrip deal was found by Cheapflights users on 11/20. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/274:05 pmOPO - ORD
2 stops28h 25mMultiple Airlines
Sun 1/124:25 pmORD - OPO
2 stops16h 50mMultiple Airlines
Deal found 11/20$644
This Gotogate deal was found by Cheapflights users on 11/21. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/56:10 pmFAO - ORD
1 stop25h 50mAer Lingus
Mon 12/93:55 pmORD - FAO
1 stop12h 35mAer Lingus
Deal found 11/21$661
This American Airlines deal was found by Cheapflights users on 11/20. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/276:30 amLIS - ORD
1 stop14h 00mAmerican Airlines
Tue 12/35:00 pmORD - LIS
1 stop13h 05mAmerican Airlines
Deal found 11/20$671
This Gotogate deal was found by Cheapflights users on 11/20. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/278:20 amOPO - ORD
1 stop12h 10mIberia
Sun 1/129:45 pmORD - OPO
2 stops27h 55mIberia
Deal found 11/20$685
This American Airlines deal was found by Cheapflights users on 11/20. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/278:20 amOPO - ORD
1 stop12h 10mAmerican Airlines
Sun 1/124:45 pmORD - OPO
1 stop21h 15mAmerican Airlines
Deal found 11/20$689
This KLM deal was found by Cheapflights users on 11/21. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/57:15 pmFAO - ORD
2 stops27h 15mKLM
Mon 12/94:25 pmORD - FAO
1 stop20h 30mKLM
Deal found 11/21$705
This oojo deal was found by Cheapflights users on 11/20. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/214:00 pmLIS - ORD
1 stop24h 10mTurkish Airlines
Thu 11/288:20 pmORD - LIS
1 stop32h 15mTurkish Airlines
Deal found 11/20$712
This Kissandfly.com deal was found by Cheapflights users on 11/20. 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 Kissandfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/276:30 amLIS - ORD
1 stop14h 00mMultiple Airlines
Sun 1/55:05 pmORD - LIS
1 stop9h 50mMultiple Airlines
Deal found 11/20$715
This KLM deal was found by Cheapflights users on 11/21. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/33:25 pmLIS - ORD
1 stop29h 05mKLM
Tue 12/172:05 pmORD - LIS
1 stop12h 55mKLM
Deal found 11/21$722
This Delta deal was found by Cheapflights users on 11/20. 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.
Wed 11/275:00 amLIS - MDW
2 stops18h 02mDelta
Tue 12/35:42 pmMDW - LIS
2 stops15h 28mDelta
Deal found 11/20$726
This United Airlines deal was found by Cheapflights users on 11/21. 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.
Thu 12/2611:55 amLIS - ORD
1 stop12h 47mUnited Airlines
Sat 1/49:05 pmORD - LIS
1 stop31h 10mUnited Airlines
Deal found 11/21$727

Find flights from Portugal to Illinois within your budget

Customize your flight search to find flights from Portugal to Illinois 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 2,629,791 searches. Data last updated November 21, 2024.

Fly from

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Fly to

Any airport

Route

Depart

Return

Price

PortoChicago

OPO - ORD

OPOORD

Porto

Thu 1/16

6:00 pm-3:30 pm

1 stop27h 30m

Chicago O'Hare Intl

Wed 1/22

7:15 pm-7:45 am

1 stop30h 30m

$538

LisbonChicago

LIS - ORD

LISORD

Lisbon Humberto Delgado

Fri 1/24

12:00 pm-3:30 pm

Nonstop9h 30m

Chicago O'Hare Intl

Sun 1/26

8:25 pm-10:15 am

Nonstop7h 50m

$545

LisbonChicago

LIS - ORD

LISORD

Lisbon Humberto Delgado

Fri 1/24

6:55 am-3:50 pm

1 stop14h 55m

Chicago O'Hare Intl

Sun 1/26

7:10 pm-3:35 pm

1 stop14h 25m

$564

PortoChicago

OPO - ORD

OPOORD

Porto

Thu 1/16

11:35 am-3:30 pm

3 stops33h 55m

Chicago O'Hare Intl

Wed 1/22

7:15 pm-9:20 pm

2 stops20h 05m

$568

LisbonChicago

LIS - ORD

LISORD

Lisbon Humberto Delgado

Thu 5/8

11:25 am-7:05 pm

1 stop13h 40m

Chicago O'Hare Intl

Tue 5/20

8:55 pm-9:35 pm

1 stop18h 40m

$583

LisbonChicago

LIS - ORD

LISORD

Lisbon Humberto Delgado

Fri 1/24

6:30 am-2:30 pm

1 stop14h 00m

Chicago O'Hare Intl

Sun 1/26

9:45 pm-11:25 pm

2 stops19h 40m

$647

LisbonChicago

LIS - ORD

LISORD

Lisbon Humberto Delgado

Fri 1/17

6:55 am-3:50 pm

1 stop14h 55m

Chicago O'Hare Intl

Fri 1/31

7:10 pm-5:55 pm

2 stops16h 45m

$648

LisbonChicago

LIS - ORD

LISORD

Lisbon Humberto Delgado

Sun 1/12

7:05 am-5:00 pm

1 stop15h 55m

Chicago O'Hare Intl

Sun 1/26

9:45 pm-9:45 pm

1 stop18h 00m

$649

PortoChicago

OPO - ORD

OPOORD

Porto

Wed 2/19

8:20 am-2:30 pm

1 stop12h 10m

Chicago O'Hare Intl

Fri 2/28

9:55 pm-8:00 pm

2 stops16h 05m

$654

LisbonChicago

LIS - ORD

LISORD

Lisbon Humberto Delgado

Sun 1/12

7:05 am-5:00 pm

1 stop15h 55m

Chicago O'Hare Intl

Sun 1/26

5:00 pm-12:10 pm

1 stop13h 10m

$659

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/20

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

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

Travel insights for flights from Portugal to Illinois

Get recent, data-driven insights about flights from Portugal to Illinois including ideal travel times, pricing trends, and more.

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

Currently, September is the cheapest month in which you can book a flight from Portugal to Illinois (average of $232). Flying from Portugal to Illinois in June is currently the most expensive (average of $308). 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 IL?

Find hourly flight availability from Portugal to Illinois. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated November 21, 2024.

When flying from Portugal to Illinois, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Rainfall in Illinois by month

Plan your trip to Illinois by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Illinois ranges from 1.7 - 4.9 inches per month. August is typically the wettest month, when rainfall can reach 4.9 in. January is typically the driest time to visit Illinois when rainfall is around 1.7 in.

Temperature in Illinois by month

Plan your trip to Illinois by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Illinois, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 73.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 23.0 F).

Reviews of airlines servicing Illinois

Get insights into the airlines that provide service to Illinois. 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 Illinois. Reviews last updated November 21, 2024.
To help decide which airline to fly from Portugal to Illinois, see what other customers have to say about Aer Lingus, United Airlines and Delta. 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.
Delta
8.0
Very good
8,758 reviews

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Food

7.3

Overall

8.0

Crew

8.5

Reviews

1 / 10

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Delta
8.0
Very good
8,758 reviews
Delta
8.0
Very good
8,758 reviews

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Food

7.3

Overall

8.0

Crew

8.5

Reviews

1 / 10

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

KLM
7.8
Good
1,350 reviews
Delta
8.0
Very good
8,758 reviews

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Food

7.3

Overall

8.0

Crew

8.5

Reviews

1 / 10

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Finnair
7.7
Good
1,300 reviews
Delta
8.0
Very good
8,758 reviews

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Food

7.3

Overall

8.0

Crew

8.5

Reviews

1 / 10

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

SWISS
7.6
Good
1,637 reviews
Delta
8.0
Very good
8,758 reviews

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Food

7.3

Overall

8.0

Crew

8.5

Reviews

1 / 10

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Virgin Atlantic
7.5
Good
663 reviews
Delta
8.0
Very good
8,758 reviews

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Food

7.3

Overall

8.0

Crew

8.5

Reviews

1 / 10

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Related info for your journey

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

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

    One-way options have recently been found by users for as low as $509 on TAP AIR PORTUGAL. Other airlines that offer cheap prices include Turkish Airlines from $566 and Aer Lingus from $583 one-way.

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

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

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

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

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

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

    Currently, September is the cheapest month in which you can book a flight from Portugal to Illinois (average of $232). Flying from Portugal to Illinois in June is currently the most expensive (average of $308). 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

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Alternative routes for Portugal to Illinois

See prices for flight routes from nearby airports that may be better suited for you.
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Top 3 airlines flying from Portugal to Illinois

Discover the top 3 airlines that operate flights from Portugal to Illinois. 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 2,629,791 searches. Data last updated November 21, 2024.
AirlineCheapestAverageFlexibilityOn-time
Aer LingusCheapest$474Average$614FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$716Average$936FlexibilityNo cancel feeOn-time69%
TAP AIR PORTUGALCheapest$762Average$961FlexibilityNo cancel feeOn-timeN/A
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