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$299+ Cheap flights from Keflavik Intl (KEF) to Chicago (CHI)

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 5/21. Fares are subject to change and may not be available on all flights or dates of travel.
KEF — CHI
Mar 28 — Apr 41
Sat 3/28
Sat 4/4
1 adult, Economy
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Cheap flight deals from Keflavik Intl to Chicago

Cheapest flights from Keflavik Intl to Chicago
Explore the most affordable flight options available from Keflavik Intl to Chicago. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 26, 2026.

This Gotogate deal was found by Cheapflights users on 2/26. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/204:25 pm
KEF
-
ORD
Nonstop6h 50m
Icelandair
Wed 4/297:25 pm
ORD
-
KEF
Nonstop6h 15m
Icelandair
Deal found 2/26$551
This Mytrip deal was found by Cheapflights users on 2/23. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/197:45 pm
KEF
-
ORD
Nonstop6h 40m
Icelandair
Sat 4/257:25 pm
ORD
-
KEF
Nonstop6h 15m
Icelandair
Deal found 2/23$554
This Cheapflightsfares deal was found by Cheapflights users on 2/23. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/274:25 pm
KEF
-
ORD
Nonstop6h 50m
Icelandair
Wed 5/67:25 pm
ORD
-
KEF
Nonstop6h 15m
Icelandair
Deal found 2/23$560
This FlightHub deal was found by Cheapflights users on 2/23. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/264:25 pm
KEF
-
ORD
Nonstop6h 50m
Icelandair
Wed 5/67:25 pm
ORD
-
KEF
Nonstop6h 15m
Icelandair
Deal found 2/23$566
This Icelandair deal was found by Cheapflights users on 2/23. 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 Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/254:25 pm
KEF
-
ORD
Nonstop6h 50m
Icelandair
Wed 5/67:25 pm
ORD
-
KEF
Nonstop6h 15m
Icelandair
Deal found 2/23$577
This Kiwi.com deal was found by Cheapflights users on 2/23. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/294:25 pm
KEF
-
ORD
Nonstop6h 50m
Icelandair
Wed 5/610:25 pm
ORD
-
KEF
Nonstop6h 05m
Icelandair
Deal found 2/23$587
This Icelandair deal was found by Cheapflights users on 2/23. 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 Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/244:25 pm
KEF
-
ORD
Nonstop6h 50m
Icelandair
Thu 5/77:25 pm
ORD
-
KEF
Nonstop6h 15m
Icelandair
Deal found 2/23$588
This Mytrip deal was found by Cheapflights users on 2/24. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/107:45 pm
KEF
-
ORD
Nonstop6h 40m
Icelandair
Fri 4/1710:25 pm
ORD
-
KEF
Nonstop6h 05m
Icelandair
Deal found 2/24$591
This Kiwi.com deal was found by Cheapflights users on 2/23. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/294:25 pm
KEF
-
ORD
Nonstop6h 50m
Icelandair
Sun 5/310:25 pm
ORD
-
KEF
Nonstop6h 05m
Icelandair
Deal found 2/23$596
This Icelandair deal was found by Cheapflights users on 2/23. 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 Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/247:45 pm
KEF
-
ORD
Nonstop6h 40m
Icelandair
Mon 5/47:25 pm
ORD
-
KEF
Nonstop6h 15m
Icelandair
Deal found 2/23$597
This Icelandair deal was found by Cheapflights users on 2/26. 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 Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/205:00 pm
KEF
-
MDW
1 stop10h 20m
Multiple Airlines
Wed 4/291:00 pm
MDW
-
KEF
1 stop12h 25m
Multiple Airlines
Deal found 2/26$816
This Icelandair deal was found by Cheapflights users on 2/23. 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 Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/275:00 pm
KEF
-
MDW
1 stop10h 20m
Multiple Airlines
Wed 5/61:00 pm
MDW
-
KEF
1 stop12h 25m
Multiple Airlines
Deal found 2/23$823

Find flight deals from Keflavik Intl to Chicago

Discover tips and strategies to find the most affordable flight options for your journey from Keflavik Intl (KEF) to Chicago (CHI). 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 February 26, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$551
(Gotogate)

One-way from

$299
(Kiwi.com)

Good one-way deal

$486 or less
Provider with most accurate pricing for Reykjavik Keflavik Intl-Chicago (CHI) flight deals.
Search Deals
Provider most trusted by Cheapflights users for Reykjavik Keflavik Intl-Chicago (CHI) flights.
Search Deals
From Reykjavik Keflavik Intl to Chicago (CHI)
Search Deals
One-way flight from Reykjavik Keflavik Intl to Chicago (CHI)
Search Deals
Price to beat on a one-way flight from Reykjavik Keflavik Intl to Chicago (CHI).
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Keflavik Intl to Chicago 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 February 26, 2026.
Use the filters below to find and compare flights from Reykjavik Keflavik Intl Airport to Chicago that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

ReykjavikChicago

KEF - ORD

KEFORD

Reykjavik Keflavik Intl

Thu 4/30

4:25 pm-6:15 pm

Nonstop6h 50m

Chicago O'Hare Intl

Thu 5/7

7:25 pm-6:40 am

Nonstop6h 15m

$588

ReykjavikChicago

KEF - ORD

KEFORD

Reykjavik Keflavik Intl

Mon 4/20

4:25 pm-6:15 pm

Nonstop6h 50m

Chicago O'Hare Intl

Wed 4/29

9:41 am-6:05 am

1 stop15h 24m

$663

ReykjavikChicago

KEF - ORD

KEFORD

Reykjavik Keflavik Intl

Mon 4/20

5:00 pm-11:05 pm

1 stop11h 05m

Chicago O'Hare Intl

Wed 4/29

8:58 am-6:15 am

1 stop16h 17m

$698

ReykjavikChicago

KEF - ORD

KEFORD

Reykjavik Keflavik Intl

Sat 6/6

4:25 pm-6:15 pm

Nonstop6h 50m

Chicago O'Hare Intl

Sat 6/6

10:25 pm-9:30 am

Nonstop6h 05m

$757

ReykjavikChicago

KEF - MDW

KEFMDW

Reykjavik Keflavik Intl

Mon 4/20

5:00 pm-10:20 pm

1 stop10h 20m

Chicago Midway

Wed 4/29

1:00 pm-6:25 am

1 stop12h 25m

$816

ReykjavikChicago

KEF - MDW

KEFMDW

Reykjavik Keflavik Intl

Mon 4/27

5:00 pm-10:20 pm

1 stop10h 20m

Chicago Midway

Wed 5/6

1:00 pm-6:25 am

1 stop12h 25m

$823

ReykjavikChicago

KEF - ORD

KEFORD

Reykjavik Keflavik Intl

Sat 6/13

12:00 pm-1:50 pm

Nonstop6h 50m

Chicago O'Hare Intl

Sun 6/21

3:40 pm-7:55 am

1 stop11h 15m

$829

ReykjavikChicago

KEF - MDW

KEFMDW

Reykjavik Keflavik Intl

Mon 4/27

11:25 am-10:28 pm

2 stops16h 03m

Chicago Midway

Wed 5/6

7:16 pm-7:40 am

1 stop31h 24m

$842

ReykjavikChicago

KEF - ORD

KEFORD

Reykjavik Keflavik Intl

Mon 4/27

11:25 am-5:41 pm

1 stop11h 16m

Chicago O'Hare Intl

Fri 5/8

1:04 pm-9:30 am

1 stop15h 26m

$844

ReykjavikChicago

KEF - ORD

KEFORD

Reykjavik Keflavik Intl

Wed 4/29

11:25 am-8:40 pm

2 stops14h 15m

Chicago O'Hare Intl

Wed 5/6

8:32 pm-7:40 am

1 stop30h 08m

$844

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/23

Showing 1-10 of 34 resultsSorted by cheapest first
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  • Most accurate provider: When it comes to deals on Reykjavik Keflavik Intl Airport-Chicago flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Reykjavik Keflavik Intl Airport-Chicago flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Reykjavik Keflavik Intl Airport-Chicago flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Reykjavik Keflavik Intl Airport-Chicago flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Reykjavik Keflavik Intl Airport-Chicago flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Keflavik Intl to Chicago

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

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

Find hourly flight availability from Keflavik Intl to Chicago. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated February 26, 2026.

When flying from Reykjavik Keflavik Intl Airport to Chicago, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Related info for your journey

Find useful and relevant information for your journey from Keflavik Intl to Chicago. 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 Chicago?

    There are many flights that can get you from Reykjavik Keflavik Intl Airport to Chicago in 6h 50m. Fly via Icelandair, United Airlines, or KLM to get the fastest option. The distance between Reykjavik Keflavik Intl Airport and Chicago is about 2934 mi. Both multi-stop and nonstop flights can be found to your destination and back.

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

    Looking at all options, your cheapest flight can be booked for $435. While the most popular route (Reykjavik Keflavik Intl - Chicago O'Hare Intl) can be booked for $591 on average, our data indicates $969 when flying from Reykjavik Keflavik Intl Airport to Chicago.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Keflavik Intl to Chicago 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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