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$407+ 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 1/21. Fares are subject to change and may not be available on all flights or dates of travel.
KEF — CHI
Jan 17 — Jan 241
Sat 1/17
Sat 1/24
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 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 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 December 18, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

Cheapflightsfares
2 stars

Round-trip from

$446
(Mytrip)

One-way from

$407
(Kiwi.com)

Good one-way deal

$454 or less
Provider with most accurate pricing for Reykjavik Keflavik Intl-Chicago (CHI) flight deals.
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Provider most trusted by Cheapflights users for Reykjavik Keflavik Intl-Chicago (CHI) flights.
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From Reykjavik Keflavik Intl to Chicago (CHI)
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One-way flight from Reykjavik Keflavik Intl to Chicago (CHI)
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Price to beat on a one-way flight from Reykjavik Keflavik Intl to Chicago (CHI).
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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 December 18, 2025.
Use the filters below to find and compare flights from Reykjavik Keflavik Intl Airport to Chicago that are best for you.

Fly from

Keflavik Intl

Fly to

Chicago

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

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

ReykjavikChicago

KEF - ORD

KEFORD

Reykjavik Keflavik Intl

Sat 1/31

5:15 pm-1:35 pm

2 stops50h 20m

$452

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/17

Showing 1-10 of 20 results
1
2

Compare providers for flights from Keflavik Intl to Chicago

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Keflavik Intl to Chicago in December.
ProviderPrice AccuracyTrust Score*
FlightHubPrice Accuracy3 starsTrust Score*1 star
CheapflightsfaresPrice Accuracy3 starsTrust Score*2 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • 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 Cheapflightsfares the most. Cheapflightsfares 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 December 18, 2025.

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 to get the fastest option. The distance between Reykjavik Keflavik Intl Airport and Chicago is about 2934 mi. Generally, flights for this route are nonstop.

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

    Looking at all options, your cheapest flight can be booked for $454. While the most popular route (Reykjavik Keflavik Intl - Chicago O'Hare Intl) can be booked for $446 on average, our data indicates $465 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

Traveling to a place near Chicago?

Book flights to Chicago if you plan to visit one of these locations
Lansing
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