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$407+ Cheap flights from Keflavik Intl (KEF) 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 1/21. Fares are subject to change and may not be available on all flights or dates of travel.
KEF — ORD
Jan 17 — Jan 241
Sat 1/17
Sat 1/24
1 adult, Economy
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Cheap flight deals from Keflavik Intl to Illinois

Cheapest flights from Keflavik Intl to Illinois
Explore the most affordable flight options available from Keflavik Intl to Illinois. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 18, 2025.

This Cheapflightsfares deal was found by Cheapflights users on 12/16. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/174:30 pmKEF - ORD
Nonstop6h 50mIcelandair
Mon 1/56:30 pmORD - KEF
Nonstop6h 15mIcelandair
Deal found 12/16$633
This Icelandair deal was found by Cheapflights users on 12/17. 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.
Wed 12/244:30 pmKEF - ORD
Nonstop6h 50mIcelandair
Wed 12/316:30 pmORD - KEF
Nonstop6h 15mIcelandair
Deal found 12/17$634
This Icelandair deal was found by Cheapflights users on 12/17. 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.
Tue 12/234:30 pmKEF - ORD
Nonstop6h 50mIcelandair
Wed 12/316:30 pmORD - KEF
Nonstop6h 15mIcelandair
Deal found 12/17$650
This FlightHub deal was found by Cheapflights users on 12/17. 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 12/234:30 pmKEF - ORD
Nonstop6h 50mIcelandair
Tue 12/306:30 pmORD - KEF
Nonstop6h 15mIcelandair
Deal found 12/17$655
This Cheapflightsfares deal was found by Cheapflights users on 12/16. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/264:30 pmKEF - ORD
Nonstop6h 50mIcelandair
Fri 1/96:30 pmORD - KEF
Nonstop6h 15mIcelandair
Deal found 12/16$686
This Icelandair deal was found by Cheapflights users on 12/17. 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.
Wed 12/244:30 pmKEF - ORD
Nonstop6h 50mIcelandair
Mon 12/296:30 pmORD - KEF
Nonstop6h 15mIcelandair
Deal found 12/17$690
This FlightHub deal was found by Cheapflights users on 12/17. 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 12/234:30 pmKEF - ORD
Nonstop6h 50mIcelandair
Mon 12/296:30 pmORD - KEF
Nonstop6h 15mIcelandair
Deal found 12/17$695
This CheapOair deal was found by Cheapflights users on 12/16. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/264:30 pmKEF - ORD
Nonstop6h 50mMultiple Airlines
Fri 1/97:45 amORD - KEF
2 stops16h 25mMultiple Airlines
Deal found 12/16$789
This Ovago deal was found by Cheapflights users on 12/16. 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 12/174:30 pmKEF - ORD
Nonstop6h 50mMultiple Airlines
Mon 1/57:41 pmORD - KEF
1 stop28h 24mMultiple Airlines
Deal found 12/16$799
This Icelandair deal was found by Cheapflights users on 12/17. 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.
Sat 12/204:30 pmKEF - ORD
Nonstop6h 50mIcelandair
Wed 12/316:30 pmORD - KEF
Nonstop6h 15mIcelandair
Deal found 12/17$845
This FlightHub deal was found by Cheapflights users on 12/17. 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.
Sun 12/214:30 pmKEF - ORD
Nonstop6h 50mIcelandair
Tue 12/306:30 pmORD - KEF
Nonstop6h 15mIcelandair
Deal found 12/17$850

Find flight deals from Keflavik Intl to Illinois

Keep the following information in mind while searching for Keflavik Intl to Illinois flight deals. Data was last updated December 18, 2025.

Round-trip from

$446
(Mytrip)

One-way from

$407
(Kiwi.com)

Good one-way deal

$454 or less
From Reykjavik Keflavik Intl to Illinois
Search Deals
One-way flight from Reykjavik Keflavik Intl to Illinois
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Price to beat on a one-way flight from Reykjavik Keflavik Intl to Illinois.
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Cheapflights Fare Finder

 
Customize your flight search to find flights from Keflavik Intl 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 2,558,603 searches. Data last updated December 18, 2025.
Use the filters below to find and compare flights from Reykjavik Keflavik Intl Airport to Illinois that are best for you.

Fly from

Keflavik Intl

Fly to

Illinois

Route

Depart

Return

Price

ReykjavikChicago

KEF - ORD

KEFORD

Reykjavik Keflavik Intl

Sat 1/31

4:30 pm-5:20 pm

Nonstop6h 50m

Chicago O'Hare Intl

Sat 2/7

6:30 pm-6:45 am

Nonstop6h 15m

$450

ReykjavikChicago

KEF - ORD

KEFORD

Reykjavik Keflavik Intl

Wed 2/4

4:30 pm-5:20 pm

Nonstop6h 50m

Chicago O'Hare Intl

Sun 2/8

6:30 pm-6:45 am

Nonstop6h 15m

$472

ReykjavikChicago

KEF - ORD

KEFORD

Reykjavik Keflavik Intl

Thu 1/22

5:00 pm-10:42 pm

1 stop11h 42m

Chicago O'Hare Intl

Wed 1/28

7:20 am-6:15 am

2 stops16h 55m

$577

ReykjavikChicago

KEF - ORD

KEFORD

Reykjavik Keflavik Intl

Sat 1/31

5:00 pm-10:42 pm

1 stop11h 42m

Chicago O'Hare Intl

Sat 2/7

7:20 am-6:15 am

2 stops16h 55m

$578

ReykjavikChicago

KEF - MDW

KEFMDW

Reykjavik Keflavik Intl

Thu 1/22

5:00 pm-9:05 am

1 stop22h 05m

Chicago Midway

Wed 1/28

1:15 pm-6:30 am

1 stop11h 15m

$785

ReykjavikSt. Louis

KEF - STL

KEFSTL

Reykjavik Keflavik Intl

Wed 3/18

11:50 am-11:52 pm

2 stops41h 02m

Lambert-St Louis

Sun 3/22

6:33 pm-10:50 am

2 stops59h 17m

$994

ReykjavikChicago

KEF - ORD

KEFORD

Reykjavik Keflavik Intl

Wed 1/21

11:45 am-10:35 am

2 stops52h 50m

$407

ReykjavikChicago

KEF - ORD

KEFORD

Reykjavik Keflavik Intl

Tue 1/20

4:30 pm-5:20 pm

Nonstop6h 50m

$434

ReykjavikChicago

KEF - ORD

KEFORD

Reykjavik Keflavik Intl

Wed 1/14

4:30 pm-5:20 pm

Nonstop6h 50m

$434

ReykjavikChicago

KEF - ORD

KEFORD

Reykjavik Keflavik Intl

Mon 5/11

4:25 pm-6:15 pm

Nonstop6h 50m

$446

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/17

Showing 1-10 of 22 results
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Best time to book a flight from Keflavik Intl to Illinois

Have a flexible travel schedule? Discover the best time to fly to Illinois from Keflavik Intl 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 Reykjavik Keflavik Intl Airport to Illinois

What is the cheapest time of day to fly from KEF to IL?

Find hourly flight availability from Keflavik Intl 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 December 18, 2025.

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

Related info for your journey

Find useful and relevant information for your journey from Keflavik Intl to Illinois. 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 Reykjavik Keflavik Intl Airport to Illinois?

    Departing from Reykjavik Keflavik Intl Airport to Illinois will take you 6h 50m. The distance between Reykjavik Keflavik Intl Airport and Illinois is about 2934 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • What are the most popular routes from Reykjavik Keflavik Intl Airport to Illinois?

    The most popular route from Reykjavik Keflavik Intl Airport to Illinois is Reykjavik Keflavik Intl - Chicago O'Hare Intl. You may also consider Reykjavik Keflavik Intl - Chicago Midway or Reykjavik Keflavik Intl - Lambert-St Louis.

  • What are the cheapest flights from Reykjavik Keflavik Intl Airport to Illinois?

    The cheapest flight price from Reykjavik Keflavik Intl Airport to Illinois is $454. On average you can expect to pay $465. The most popular route, (Reykjavik Keflavik Intl - Chicago O'Hare Intl), can usually be booked for $446.

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

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

  • How can I find direct flights from Keflavik Intl to Illinois?

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

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

    Yes. Cheapflights offers flight deals from Keflavik Intl 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.

See more FAQs

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Alternative routes for Keflavik Intl to Illinois

See prices for flight routes from nearby airports that may be better suited for you.
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