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$297+ 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 10/6. Fares are subject to change and may not be available on all flights or dates of travel.
KEF — CHI
Oct 16 — Oct 231
Thu 10/16
Thu 10/23
1 adult, Economy
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Cheap 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 September 16, 2025.

Round-trip from

$513
(Vliegwinkel)

One-way from

$297
(Trip.com)

Good one-way deal

$530 or less
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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Find 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 September 16, 2025.

This Vliegwinkel deal was found by Cheapflights users on 9/14. 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 Vliegwinkel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/811:25 amKEF - ORD
1 stop35h 20mScandinavian Airlines
Fri 11/147:20 pmORD - KEF
1 stop33h 25mScandinavian Airlines
Deal found 9/14$513
This Ticket deal was found by Cheapflights users on 9/15. 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 Ticket is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/84:30 pmKEF - ORD
Nonstop6h 50mIcelandair
Fri 11/146:30 pmORD - KEF
Nonstop6h 15mIcelandair
Deal found 9/15$523
This Flighttix deal was found by Cheapflights users on 9/14. 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 Flighttix is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/154:30 pmKEF - ORD
Nonstop6h 50mIcelandair
Tue 12/236:30 pmORD - KEF
Nonstop6h 15mIcelandair
Deal found 9/14$556
This FlightHub deal was found by Cheapflights users on 9/15. 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 12/164:30 pmKEF - ORD
Nonstop6h 50mIcelandair
Sun 1/46:30 pmORD - KEF
Nonstop6h 15mIcelandair
Deal found 9/15$568
This Booking.com deal was found by Cheapflights users on 9/13. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/2911:30 amKEF - ORD
1 stop14h 35mScandinavian Airlines
Wed 11/57:20 pmORD - KEF
1 stop33h 25mScandinavian Airlines
Deal found 9/13$578
This Kiwi.com deal was found by Cheapflights users on 9/16. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/173:05 pmKEF - MDW
1 stop32h 38mMultiple Airlines
Tue 9/232:32 pmMDW - KEF
2 stops33h 23mMultiple Airlines
Deal found 9/16$694
This Icelandair deal was found by Cheapflights users on 9/13. 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 10/294:45 pmKEF - MDW
1 stop19h 00mMultiple Airlines
Wed 11/51:45 pmMDW - KEF
1 stop10h 50mMultiple Airlines
Deal found 9/13$871
This Icelandair deal was found by Cheapflights users on 9/14. 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 11/84:55 pmKEF - MDW
1 stop19h 50mMultiple Airlines
Fri 11/1412:35 pmMDW - KEF
1 stop11h 30mMultiple Airlines
Deal found 9/14$880
This Icelandair deal was found by Cheapflights users on 9/15. 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.
Thu 10/305:00 pmKEF - MDW
1 stop10h 20mMultiple Airlines
Thu 11/62:20 pmMDW - KEF
1 stop10h 10mMultiple Airlines
Deal found 9/15$883
This Delta deal was found by Cheapflights users on 9/15. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/228:45 amKEF - MDW
1 stop14h 50mDelta
Tue 9/301:08 pmMDW - KEF
2 stops15h 22mDelta
Deal found 9/15$886
This Icelandair deal was found by Cheapflights users on 9/14. 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 12/154:45 pmKEF - MDW
1 stop19h 45mMultiple Airlines
Tue 12/231:20 pmMDW - KEF
1 stop11h 10mMultiple Airlines
Deal found 9/14$968
This Air France deal was found by Cheapflights users on 9/16. 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 Air France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/3011:25 amKEF - MDW
2 stops15h 11mMultiple Airlines
Wed 10/81:08 pmMDW - KEF
2 stops15h 22mMultiple Airlines
Deal found 9/16$1,011

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 September 16, 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 11/8

11:25 am-4:45 pm

1 stop35h 20m

Chicago O'Hare Intl

Fri 11/14

7:20 pm-10:45 am

1 stop33h 25m

$524

ReykjavikChicago

KEF - ORD

KEFORD

Reykjavik Keflavik Intl

Sat 11/8

4:30 pm-5:20 pm

Nonstop6h 50m

Chicago O'Hare Intl

Fri 11/14

6:30 pm-6:45 am

Nonstop6h 15m

$530

ReykjavikChicago

KEF - ORD

KEFORD

Reykjavik Keflavik Intl

Thu 12/18

4:30 pm-5:20 pm

Nonstop6h 50m

Chicago O'Hare Intl

Sat 1/3

6:30 pm-6:45 am

Nonstop6h 15m

$579

ReykjavikChicago

KEF - ORD

KEFORD

Reykjavik Keflavik Intl

Wed 12/17

4:30 pm-5:20 pm

Nonstop6h 50m

Chicago O'Hare Intl

Sat 1/3

6:30 pm-6:45 am

Nonstop6h 15m

$579

ReykjavikChicago

KEF - ORD

KEFORD

Reykjavik Keflavik Intl

Wed 12/17

4:30 pm-5:20 pm

Nonstop6h 50m

Chicago O'Hare Intl

Wed 1/7

6:30 pm-6:45 am

Nonstop6h 15m

$579

ReykjavikChicago

KEF - ORD

KEFORD

Reykjavik Keflavik Intl

Wed 12/17

4:30 pm-5:20 pm

Nonstop6h 50m

Chicago O'Hare Intl

Mon 1/5

6:30 pm-6:45 am

Nonstop6h 15m

$579

ReykjavikChicago

KEF - ORD

KEFORD

Reykjavik Keflavik Intl

Tue 12/16

4:30 pm-5:20 pm

Nonstop6h 50m

Chicago O'Hare Intl

Sat 1/3

6:30 pm-6:45 am

Nonstop6h 15m

$579

ReykjavikChicago

KEF - ORD

KEFORD

Reykjavik Keflavik Intl

Thu 12/18

4:30 pm-5:20 pm

Nonstop6h 50m

Chicago O'Hare Intl

Wed 1/7

6:30 pm-6:45 am

Nonstop6h 15m

$579

ReykjavikChicago

KEF - MDW

KEFMDW

Reykjavik Keflavik Intl

Wed 10/29

4:45 pm-6:45 am

1 stop19h 00m

Chicago Midway

Wed 11/5

1:45 pm-6:35 am

1 stop10h 50m

$871

ReykjavikChicago

KEF - MDW

KEFMDW

Reykjavik Keflavik Intl

Sat 11/8

4:55 pm-6:45 am

1 stop19h 50m

Chicago Midway

Fri 11/14

12:35 pm-6:05 am

1 stop11h 30m

$880

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/14

Showing 1-10 of 27 results
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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 September 16, 2025.

A simple way to save on the total cost of your ticket is to fly from Reykjavik Keflavik Intl Airport to Chicago in the afternoon. If you’re flexible enough to do this you can expect to save up to 38% on your trip compared to booking a flight in the morning.

Weekly flight availability from Reykjavik Keflavik Intl Airport to Chicago

Explore weekly flight availability from Keflavik Intl to Chicago. 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 September 16, 2025.

The most flights from KEF to CHI are scheduled on a Tuesday (6 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (5 on average).

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 Scandinavian Airlines or Icelandair 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 is the cheapest airline to fly from Reykjavik Keflavik Intl Airport to Chicago round-trip?

    Currently priced at $483, Icelandair will fly you from Reykjavik Keflavik Intl Airport to Chicago and back. In addition to Icelandair, many other airlines offer competitively priced options for your trip.

  • What are the most reliable airlines from Reykjavik Keflavik Intl Airport to Chicago?

    Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from Reykjavik Keflavik Intl Airport to Chicago on time: Icelandair (86%), Air Canada (84%), Austrian Airlines (84%).

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

    Looking at all options, your cheapest flight can be booked for $451. While the most popular route (Reykjavik Keflavik Intl - Chicago O'Hare Intl) can be booked for $533 on average, our data indicates $768 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.

  • What is the cheapest month to book a flight from Reykjavik Keflavik Intl Airport to Chicago?

    Currently, August is the cheapest month in which you can book a flight from Reykjavik Keflavik Intl Airport to Chicago (average of $245). Flying from Reykjavik Keflavik Intl Airport to Chicago in March is currently the most expensive (average of $321). 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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Top airline flying from Keflavik Intl to Chicago

Discover the top airline that operate flights from Keflavik Intl to Chicago. 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 September 16, 2025.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest$483Average$591FlexibilityNo cancel feeOn-time76%

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