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$267+ Cheap flights from Illinois to Europe

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 9/1. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — CPH
Jul 28 — Aug 41
Tue 7/28
Tue 8/4
1 adult, Economy
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Cheap flight deals from Illinois to Europe

Cheapest flights from Illinois to Europe
Explore the most affordable flight options available from Illinois to Europe. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 28, 2026.

This oojo deal was found by Cheapflights users on 6/27. 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 8/168:32 pm
ORD
-
DUB
1 stop26h 38m
Aer Lingus
Tue 8/251:20 pm
DUB
-
ORD
1 stop13h 00m
Aer Lingus
Deal found 6/27$402
This KAYAK deal was found by Cheapflights users on 6/23. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/145:35 pm
ORD
-
DUB
1 stop29h 35m
Aer Lingus
Tue 9/81:20 pm
DUB
-
ORD
1 stop12h 28m
Aer Lingus
Deal found 6/23$406
This KAYAK deal was found by Cheapflights users on 6/24. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/198:09 am
ORD
-
DUB
1 stop15h 01m
Aer Lingus
Sat 8/291:20 pm
DUB
-
ORD
1 stop12h 33m
Aer Lingus
Deal found 6/24$407
This Gurufare deal was found by Cheapflights users on 6/25. 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 Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/98:40 pm
ORD
-
DUB
1 stop26h 30m
Aer Lingus
Sat 8/221:20 pm
DUB
-
ORD
1 stop12h 32m
Aer Lingus
Deal found 6/25$408
This KAYAK deal was found by Cheapflights users on 6/26. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/19:50 am
ORD
-
DUB
1 stop13h 20m
Aer Lingus
Mon 9/71:20 pm
DUB
-
ORD
1 stop25h 40m
Aer Lingus
Deal found 6/26$410
This KAYAK deal was found by Cheapflights users on 6/27. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/111:45 am
ORD
-
DUB
1 stop11h 25m
Aer Lingus
Sun 9/61:20 pm
DUB
-
ORD
1 stop25h 40m
Aer Lingus
Deal found 6/27$411
This Ovago deal was found by Cheapflights users on 6/28. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/269:50 am
ORD
-
DUB
1 stop13h 20m
Aer Lingus
Sun 8/301:20 pm
DUB
-
ORD
1 stop25h 40m
Aer Lingus
Deal found 6/28$412
This oojo deal was found by Cheapflights users on 6/25. 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 8/98:32 pm
ORD
-
DUB
1 stop26h 38m
Aer Lingus
Tue 8/251:20 pm
DUB
-
ORD
1 stop13h 00m
Aer Lingus
Deal found 6/25$420
This KAYAK deal was found by Cheapflights users on 6/24. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/249:50 am
ORD
-
DUB
1 stop13h 20m
Aer Lingus
Sun 8/301:20 pm
DUB
-
ORD
1 stop12h 14m
Aer Lingus
Deal found 6/24$424
This Kiwi.com deal was found by Cheapflights users on 6/28. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/227:25 pm
ORD
-
KEF
Nonstop6h 15m
Icelandair
Tue 9/14:25 pm
KEF
-
ORD
Nonstop6h 50m
Icelandair
Deal found 6/28$428
This Icelandair deal was found by Cheapflights users on 6/27. 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.
Mon 8/177:25 pm
ORD
-
KEF
Nonstop6h 15m
Icelandair
Fri 8/287:45 pm
KEF
-
ORD
Nonstop6h 40m
Icelandair
Deal found 6/27$429
This Trip.com deal was found by Cheapflights users on 6/28. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/237:25 pm
ORD
-
KEF
Nonstop6h 15m
Icelandair
Mon 9/284:25 pm
KEF
-
ORD
Nonstop6h 50m
Icelandair
Deal found 6/28$430

Find flight deals from Illinois to Europe

Keep the following information in mind while searching for Illinois to Europe flight deals. Data was last updated June 28, 2026.

Round-trip from

$402
(oojo)

One-way from

$267
(Kiwi.com)

Popular in

June

Cheapest in

February

Average price

$1,417

Good round-trip deal

$692 or less

Good one-way deal

$308 or less
From Illinois to Europe
Search Deals
One-way flight from Illinois to Europe
Search Deals
Highest demand for flights based on searches. 17% potential increase in price ($214 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($38 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in June 2026
Search Deals
Price to beat on a round-trip flight from Illinois to Europe.
Search Deals
Price to beat on a one-way flight from Illinois to Europe.
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Illinois to Europe 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 June 28, 2026.
Use the filters below to find and compare flights from Illinois to Europe that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

ChicagoReykjavik

ORD - KEF

ORDKEF

Chicago O'Hare Intl

Fri 7/17

5:18 pm-7:40 am

1 stop9h 22m

Reykjavik Keflavik Intl

Fri 7/24

9:30 am-9:52 pm

1 stop17h 22m

$433

ChicagoReykjavik

ORD - KEF

ORDKEF

Chicago O'Hare Intl

Sun 8/2

11:30 am-7:40 am

1 stop15h 10m

Reykjavik Keflavik Intl

Sun 8/9

12:10 pm-9:52 pm

1 stop14h 42m

$433

ChicagoReykjavik

ORD - KEF

ORDKEF

Chicago O'Hare Intl

Mon 8/24

3:51 pm-7:00 am

1 stop10h 09m

Reykjavik Keflavik Intl

Fri 8/28

9:30 am-7:30 pm

1 stop15h 00m

$433

ChicagoReykjavik

ORD - KEF

ORDKEF

Chicago O'Hare Intl

Wed 8/26

12:29 pm-7:00 am

1 stop13h 31m

Reykjavik Keflavik Intl

Tue 9/1

9:30 am-2:59 pm

1 stop10h 29m

$433

ChicagoReykjavik

ORD - KEF

ORDKEF

Chicago O'Hare Intl

Tue 7/21

8:21 pm-7:00 am

1 stop29h 39m

Reykjavik Keflavik Intl

Wed 7/29

9:30 am-3:05 pm

1 stop10h 35m

$439

ChicagoReykjavik

ORD - KEF

ORDKEF

Chicago O'Hare Intl

Wed 8/26

8:40 am-7:55 am

1 stop18h 15m

Reykjavik Keflavik Intl

Thu 10/8

12:00 pm-1:55 pm

Nonstop6h 55m

$519

ChicagoReykjavik

ORD - KEF

ORDKEF

Chicago O'Hare Intl

Fri 10/9

9:35 pm-8:50 am

Nonstop6h 15m

Reykjavik Keflavik Intl

Fri 10/16

9:15 am-10:17 am

1 stop30h 02m

$519

ChicagoReykjavik

ORD - KEF

ORDKEF

Chicago O'Hare Intl

Fri 10/16

9:35 pm-8:50 am

Nonstop6h 15m

Reykjavik Keflavik Intl

Mon 10/19

10:00 am-2:55 pm

1 stop9h 55m

$523
Quickest round-trip

ChicagoReykjavik

ORD - KEF

ORDKEF

Chicago O'Hare Intl

Sun 7/26

9:35 pm-8:50 am

Nonstop6h 15m

Reykjavik Keflavik Intl

Thu 8/6

12:00 pm-1:50 pm

Nonstop6h 50m

$528

ChicagoReykjavik

ORD - KEF

ORDKEF

Chicago O'Hare Intl

Fri 7/17

9:35 pm-8:50 am

Nonstop6h 15m

Reykjavik Keflavik Intl

Fri 7/24

12:00 pm-1:50 pm

Nonstop6h 50m

$528

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/24

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

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

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

Currently, February is the cheapest month in which you can book a flight from Illinois to Europe (average of $586). Flying from Illinois to Europe in June is currently the most expensive (average of $1,110). 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 EU?

Find hourly flight availability from Illinois to Europe. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated June 28, 2026.

Unlike in the morning, when flights are generally more expensive, you can save up to 57% on flights from Illinois to Europe by exploring options for tickets in the evening.

Weekly flight availability from Illinois to Europe

Explore weekly flight availability from Illinois to Europe. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated June 28, 2026.

The most flights from USIL to EU0 are scheduled on a Monday (3 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (3 on average).

How far ahead should I book a flight from Illinois to Europe?

The price you pay for your flight from Illinois to Europe may vary depending on when you book. For the best chance of a lower fare, look to book 43 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

What is the cheapest day to fly from Illinois to Europe?

Use this chart to determine the cheapest time to fly round-trip from Illinois to Europe. Price data was last updated on June 27, 2026.

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

Related info for your journey

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

    Airlines like Delta, Scandinavian Airlines, and TAP AIR PORTUGAL fly from Illinois to Europe in about 11h 40m. The time it takes to get you to your destination can typically vary by up to 6h 10m. The distance from Illinois to Europe is about 4188 mi. This flight may include one or multiple stops.

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

    For one-way options, check prices for SWISS. According to our data, you can fly for as low as $32. Users have also found prices from $33 and $68 on Lufthansa and Royal Jordanian, respectively.

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

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

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

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

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

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

    Currently, February is the cheapest month in which you can book a flight from Illinois to Europe (average of $586). Flying from Illinois to Europe in June is currently the most expensive (average of $1,110). 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 Illinois to Europe

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 Europe

Discover the top 10 airlines that operate flights from Illinois to Europe. 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 June 28, 2026.
AirlineCheapestAverageFlexibilityOn-time
JetBlueCheapest$51Average$533FlexibilityNo cancel feeOn-time62%
Scandinavian AirlinesCheapest$338Average$627FlexibilityNo cancel feeOn-time77%
FinnairCheapest$353Average$829FlexibilityNo cancel feeOn-time76%
IcelandairCheapest$355Average$584FlexibilityNo cancel feeOn-time76%
Air CanadaCheapest$366Average$678FlexibilityNo cancel feeOn-time67%
IberiaCheapest$424Average$807FlexibilityNo cancel feeOn-time77%
Aer LingusCheapest$440Average$787FlexibilityNo cancel feeOn-timeN/A
SWISSCheapest$458Average$780FlexibilityNo cancel feeOn-time79%
LOTCheapest$462Average$1,055FlexibilityNo cancel feeOn-time81%
Air FranceCheapest$470Average$752FlexibilityNo cancel feeOn-time77%

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