HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Chicago

$325+ 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 1/18. Fares are subject to change and may not be available on all flights or dates of travel.
KEF — CHI
Nov 29 — Dec 61
Sat 11/29
Sat 12/6
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Keflavik Intl to Chicago with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

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 October 30, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

Cheapflightsfares
2 stars

Round-trip from

$363
(ResecentrumGruppen)

One-way from

$325
(Thrive Travel)

Good one-way deal

$937 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

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 October 30, 2025.

This ResecentrumGruppen deal was found by Cheapflights users on 10/30. 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 ResecentrumGruppen is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/204:30 pmKEF - ORD
Nonstop6h 50mIcelandair
Thu 11/276:30 pmORD - KEF
Nonstop6h 15mIcelandair
Deal found 10/30$363
This Mytrip deal was found by Cheapflights users on 10/29. 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.
Thu 11/134:30 pmKEF - ORD
Nonstop6h 50mIcelandair
Mon 11/176:30 pmORD - KEF
Nonstop6h 15mIcelandair
Deal found 10/29$389
This Kiwi.com deal was found by Cheapflights users on 10/30. 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.
Thu 12/114:55 pmKEF - ORD
1 stop13h 17mMultiple Airlines
Mon 12/157:00 amORD - KEF
1 stop17h 05mMultiple Airlines
Deal found 10/30$524
This FlightHub deal was found by Cheapflights users on 10/30. 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.
Thu 11/274:30 pmKEF - ORD
Nonstop6h 50mIcelandair
Mon 12/16:30 pmORD - KEF
Nonstop6h 15mIcelandair
Deal found 10/30$574
This Booking.com deal was found by Cheapflights users on 10/30. 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 12/104:30 pmKEF - ORD
Nonstop6h 50mIcelandair
Sun 9/610:40 pmORD - KEF
Nonstop6h 05mIcelandair
Deal found 10/30$585
This FlightHub deal was found by Cheapflights users on 10/29. 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.
Wed 12/174:30 pmKEF - ORD
Nonstop6h 50mIcelandair
Mon 1/56:30 pmORD - KEF
Nonstop6h 15mIcelandair
Deal found 10/29$596
This FlightHub deal was found by Cheapflights users on 10/30. 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.
Wed 12/174:30 pmKEF - ORD
Nonstop6h 50mIcelandair
Sun 1/46:30 pmORD - KEF
Nonstop6h 15mIcelandair
Deal found 10/30$597
This Kiwi.com deal was found by Cheapflights users on 10/29. 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.
Thu 11/134:55 pmKEF - ORD
1 stop13h 20mMultiple Airlines
Mon 11/176:00 amORD - KEF
1 stop18h 05mMultiple Airlines
Deal found 10/29$631
This Icelandair deal was found by Cheapflights users on 10/29. 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 11/204:30 pmKEF - ORD
Nonstop6h 50mMultiple Airlines
Thu 11/2712:28 pmORD - KEF
1 stop11h 37mMultiple Airlines
Deal found 10/29$657
This Kiwi.com deal was found by Cheapflights users on 10/30. 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.
Thu 11/205:55 pmKEF - MDW
2 stops35h 34mMultiple Airlines
Thu 11/276:20 amMDW - KEF
1 stop17h 50mMultiple Airlines
Deal found 10/30$883
This Icelandair deal was found by Cheapflights users on 10/30. 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 12/115:10 pmKEF - MDW
1 stop11h 25mMultiple Airlines
Mon 12/1512:55 pmMDW - KEF
1 stop11h 35mMultiple Airlines
Deal found 10/30$936
This Kiwi.com deal was found by Cheapflights users on 10/30. 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.
Fri 11/285:00 pmKEF - MDW
1 stop24h 50mMultiple Airlines
Fri 12/58:42 pmMDW - KEF
2 stops27h 48mMultiple Airlines
Deal found 10/30$1,158

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 October 30, 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

Thu 11/13

4:30 pm-5:20 pm

Nonstop6h 50m

Chicago O'Hare Intl

Mon 11/17

6:30 pm-6:45 am

Nonstop6h 15m

$389

ReykjavikChicago

KEF - ORD

KEFORD

Reykjavik Keflavik Intl

Thu 12/11

4:55 pm-12:12 am

1 stop13h 17m

Chicago O'Hare Intl

Mon 12/15

7:00 am-6:05 am

1 stop17h 05m

$524

ReykjavikChicago

KEF - ORD

KEFORD

Reykjavik Keflavik Intl

Fri 4/3

4:25 pm-6:15 pm

Nonstop6h 50m

Chicago O'Hare Intl

Sun 4/5

10:40 pm-9:45 am

Nonstop6h 05m

$576

ReykjavikChicago

KEF - ORD

KEFORD

Reykjavik Keflavik Intl

Thu 11/13

4:55 pm-12:15 am

1 stop13h 20m

Chicago O'Hare Intl

Mon 11/17

6:00 am-6:05 am

1 stop18h 05m

$631

ReykjavikChicago

KEF - ORD

KEFORD

Reykjavik Keflavik Intl

Thu 11/20

4:30 pm-5:20 pm

Nonstop6h 50m

Chicago O'Hare Intl

Thu 11/27

12:28 pm-6:05 am

1 stop11h 37m

$657

ReykjavikChicago

KEF - ORD

KEFORD

Reykjavik Keflavik Intl

Thu 4/23

10:30 am-4:10 pm

1 stop34h 40m

Chicago O'Hare Intl

Sat 5/2

7:15 pm-10:15 am

2 stops34h 00m

$674

ReykjavikChicago

KEF - ORD

KEFORD

Reykjavik Keflavik Intl

Thu 4/23

4:25 pm-6:15 pm

Nonstop6h 50m

Chicago O'Hare Intl

Sat 5/2

10:35 am-6:15 am

1 stop14h 40m

$717

ReykjavikChicago

KEF - ORD

KEFORD

Reykjavik Keflavik Intl

Wed 12/10

5:00 pm-7:43 pm

1 stop32h 43m

Chicago O'Hare Intl

Sun 9/6

7:20 pm-6:35 am

Nonstop6h 15m

$719

ReykjavikChicago

KEF - MDW

KEFMDW

Reykjavik Keflavik Intl

Thu 11/20

5:55 pm-11:29 pm

2 stops35h 34m

Chicago Midway

Thu 11/27

6:20 am-6:10 am

1 stop17h 50m

$883

ReykjavikChicago

KEF - MDW

KEFMDW

Reykjavik Keflavik Intl

Thu 12/11

5:10 pm-10:35 pm

1 stop11h 25m

Chicago Midway

Mon 12/15

12:55 pm-6:30 am

1 stop11h 35m

$936

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/30

Showing 1-10 of 23 results
1
2
3

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 October.
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 October 30, 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 or Delta 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: Air Canada (95%), Austrian Airlines (95%), Brussels Airlines (95%).

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

    Looking at all options, your cheapest flight can be booked for $486. While the most popular route (Reykjavik Keflavik Intl - Chicago O'Hare Intl) can be booked for $386 on average, our data indicates $1,426 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
Merrillville
Lansing
Hammond
Porter
Benton Harbor

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Other flights to Chicago

Explore flights to Chicago departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on October 30, 2025.
Newark to Midway flights
Asheville to Midway flights
Orlando to Midway flights
Tampa to Midway flights
John F Kennedy Intl to O'Hare Intl flights
Cape Girardeau to O'Hare Intl flights
Chicago Midway Airport to Newark Airport flights
Chicago Midway Airport to Miami flights
Chicago O'Hare Intl Airport to New York John F Kennedy Intl Airport flights
Chicago Midway Airport to Louisville flights
Chicago O'Hare Intl Airport to Orlando Airport flights
Chicago O'Hare Intl Airport to Atlanta flights
Chicago Midway Airport to Houston George Bush Intcntl Airport flights
Chicago O'Hare Intl Airport to Nashville flights
Chicago Greater Rockford Airport to Orlando Sanford Intl Airport flights
Chicago O'Hare Intl Airport to Louisville flights
Chicago Midway Airport to Asheville flights
Chicago O'Hare Intl Airport to Baltimore flights
Chicago Midway Airport to Tampa flights
Chicago O'Hare Intl Airport to Dallas/Fort Worth Airport flights
Chicago Midway Airport to Nashville flights
Chicago O'Hare Intl Airport to Grand Rapids flights
Chicago Midway Airport to Minneapolis flights
Chicago Midway Airport to Pittsburgh flights

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 October 30, 2025.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest$483Average$591FlexibilityNo cancel feeOn-time76%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.