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$171+ 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 8/25. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — CPH
Aug 26 — Sep 21
Wed 8/26
Wed 9/2
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 July 27, 2026.

This KAYAK deal was found by Cheapflights users on 7/26. 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.
Mon 8/248:32 pm
ORD
-
DUB
1 stop26h 38m
Aer Lingus
Fri 8/281:20 pm
DUB
-
ORD
1 stop12h 32m
Aer Lingus
Deal found 7/26$366
This Ovago deal was found by Cheapflights users on 7/25. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/168:09 am
ORD
-
DUB
1 stop15h 01m
Aer Lingus
Thu 8/201:20 pm
DUB
-
ORD
1 stop31h 35m
Aer Lingus
Deal found 7/25$367
This KAYAK deal was found by Cheapflights users on 7/22. 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 8/119:50 am
ORD
-
DUB
1 stop13h 20m
Aer Lingus
Fri 8/281:20 pm
DUB
-
ORD
1 stop13h 00m
Aer Lingus
Deal found 7/22$371
This KAYAK deal was found by Cheapflights users on 7/25. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/199:50 am
ORD
-
DUB
1 stop13h 20m
Aer Lingus
Thu 8/271:20 pm
DUB
-
ORD
1 stop12h 32m
Aer Lingus
Deal found 7/25$380
This KAYAK deal was found by Cheapflights users on 7/22. 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 8/129:50 am
ORD
-
DUB
1 stop13h 20m
Aer Lingus
Fri 8/281:20 pm
DUB
-
ORD
1 stop13h 00m
Aer Lingus
Deal found 7/22$389
This KAYAK deal was found by Cheapflights users on 7/26. 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.
Thu 10/2910:15 am
ORD
-
DUB
1 stop13h 55m
Aer Lingus
Thu 11/191:00 pm
DUB
-
ORD
1 stop12h 58m
Aer Lingus
Deal found 7/26$394
This KAYAK deal was found by Cheapflights users on 7/22. 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.
Thu 11/1910:15 am
ORD
-
DUB
1 stop12h 55m
Aer Lingus
Thu 11/261:00 pm
DUB
-
ORD
1 stop12h 41m
Aer Lingus
Deal found 7/22$395
This KAYAK deal was found by Cheapflights users on 7/22. 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.
Thu 9/109:55 am
ORD
-
DUB
1 stop13h 15m
Aer Lingus
Thu 9/171:20 pm
DUB
-
ORD
1 stop12h 28m
Aer Lingus
Deal found 7/22$398
This Ovago deal was found by Cheapflights users on 7/23. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/148:45 pm
ORD
-
DUB
1 stop26h 25m
Aer Lingus
Sat 11/211:00 pm
DUB
-
ORD
1 stop12h 41m
Aer Lingus
Deal found 7/23$399
This KAYAK deal was found by Cheapflights users on 7/24. 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.
Thu 10/229:46 am
ORD
-
DUB
1 stop13h 24m
Aer Lingus
Wed 11/41:00 pm
DUB
-
ORD
1 stop12h 58m
Aer Lingus
Deal found 7/24$404
This KAYAK deal was found by Cheapflights users on 7/24. 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 11/911:45 am
ORD
-
DUB
1 stop11h 25m
Aer Lingus
Sat 11/141:00 pm
DUB
-
ORD
1 stop12h 41m
Aer Lingus
Deal found 7/24$412
This KAYAK deal was found by Cheapflights users on 7/24. 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 10/2111:45 am
ORD
-
DUB
1 stop11h 25m
Aer Lingus
Thu 11/51:00 pm
DUB
-
ORD
1 stop12h 41m
Aer Lingus
Deal found 7/24$414

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 July 27, 2026.

Round-trip from

$366
(KAYAK)

One-way from

$171
(KAYAK)

Popular in

June

Cheapest in

February

Average price

$1,410

Good round-trip deal

$500 or less

Good one-way deal

$245 or less
From Illinois to Europe
Search Deals
One-way flight from Illinois to Europe
Search Deals
Highest demand for flights based on searches. 21% potential increase in price ($287 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($36 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in July 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 July 27, 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

ChicagoDublin

ORD - DUB

ORDDUB

Chicago O'Hare Intl

Mon 12/7

6:30 pm-8:10 am

Nonstop7h 40m

Dublin

Fri 12/11

9:00 am-4:00 pm

1 stop13h 00m

$694

ChicagoDublin

ORD - DUB

ORDDUB

Chicago O'Hare Intl

Tue 12/1

1:35 pm-2:30 pm

2 stops18h 55m

Dublin

Tue 12/8

8:50 am-6:40 pm

2 stops15h 50m

$712

ChicagoDublin

ORD - DUB

ORDDUB

Chicago O'Hare Intl

Mon 10/5

7:25 pm-1:15 pm

1 stop11h 50m

Dublin

Tue 10/13

2:15 pm-6:15 pm

1 stop10h 00m

$716

ChicagoMadrid

ORD - MAD

ORDMAD

Chicago O'Hare Intl

Sun 9/20

10:15 pm-1:30 pm

Nonstop8h 15m

Madrid Barajas

Wed 9/30

1:35 pm-4:00 pm

Nonstop9h 25m

$727

ChicagoWarsaw

ORD - WAW

ORDWAW

Chicago O'Hare Intl

Thu 9/10

7:15 pm-7:05 pm

1 stop16h 50m

Warsaw Frederic Chopin

Thu 9/17

7:45 pm-4:10 pm

1 stop27h 25m

$731

ChicagoMadrid

ORD - MAD

ORDMAD

Chicago O'Hare Intl

Sun 9/20

8:55 am-9:30 am

2 stops17h 35m

Madrid Barajas

Tue 9/29

10:25 am-9:37 pm

2 stops18h 12m

$735

ChicagoDublin

ORD - DUB

ORDDUB

Chicago O'Hare Intl

Tue 11/10

7:15 pm-10:10 am

2 stops32h 55m

Dublin

Tue 11/17

12:30 pm-4:45 pm

2 stops34h 15m

$737

ChicagoDublin

ORD - DUB

ORDDUB

Chicago O'Hare Intl

Tue 9/29

9:52 pm-7:20 am

1 stop27h 28m

Dublin

Wed 10/7

9:20 am-9:00 am

1 stop29h 40m

$739

ChicagoDublin

ORD - DUB

ORDDUB

Chicago O'Hare Intl

Sun 10/25

8:15 pm-7:35 pm

2 stops18h 20m

Dublin

Mon 11/2

12:35 pm-4:45 pm

2 stops34h 10m

$740

ChicagoBarcelona

ORD - BCN

ORDBCN

Chicago O'Hare Intl

Tue 10/13

9:40 pm-1:15 pm

Nonstop8h 35m

Barcelona-El Prat

Tue 10/20

3:15 pm-6:00 pm

Nonstop9h 45m

$743

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/26

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 $594). Flying from Illinois to Europe in June is currently the most expensive (average of $1,114). 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 July 27, 2026.

Unlike in the morning, when flights are generally more expensive, you can save up to 56% 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 July 27, 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 41 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 July 25, 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 United Airlines, Delta, and Icelandair fly from Illinois to Europe in about 7h 40m. The time it takes to get you to your destination can typically vary by up to 11h 15m. The distance from Illinois to Europe is about 3661 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 $594). Flying from Illinois to Europe in June is currently the most expensive (average of $1,114). 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

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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 July 27, 2026.
AirlineCheapestAverageFlexibilityOn-time
JetBlueCheapest$51Average$709FlexibilityNo cancel feeOn-time62%
Virgin AtlanticCheapest$215Average$481FlexibilityNo cancel feeOn-time72%
IcelandairCheapest$355Average$583FlexibilityNo cancel feeOn-time76%
Air CanadaCheapest$362Average$669FlexibilityNo cancel feeOn-time67%
Scandinavian AirlinesCheapest$369Average$658FlexibilityNo cancel feeOn-time77%
FinnairCheapest$427Average$837FlexibilityNo cancel feeOn-time76%
Aer LingusCheapest$440Average$791FlexibilityNo cancel feeOn-timeN/A
SWISSCheapest$458Average$802FlexibilityNo cancel feeOn-time79%
LOTCheapest$462Average$1,025FlexibilityNo cancel feeOn-time81%
IberiaCheapest$463Average$823FlexibilityNo cancel feeOn-time77%

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