HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Chicago

$398+ 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 7/21. Fares are subject to change and may not be available on all flights or dates of travel.
KEF — CHI
Jul 25 — Aug 11
Sat 7/25
Sat 8/1
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

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 June 25, 2026.

This Ticket deal was found by Cheapflights users on 6/23. 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 Ticket is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/174:25 pm
KEF
-
ORD
Nonstop6h 50m
Icelandair
Wed 8/2610:25 pm
ORD
-
KEF
Nonstop6h 05m
Icelandair
Deal found 6/23$580
This Gotogate deal was found by Cheapflights users on 6/21. 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 8/34:25 pm
KEF
-
ORD
Nonstop6h 50m
Icelandair
Wed 8/1210:25 pm
ORD
-
KEF
Nonstop6h 05m
Icelandair
Deal found 6/21$596
This Gotogate deal was found by Cheapflights users on 6/19. 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 7/204:25 pm
KEF
-
ORD
Nonstop6h 50m
Icelandair
Wed 7/2910:25 pm
ORD
-
KEF
Nonstop6h 05m
Icelandair
Deal found 6/19$615
This oojo deal was found by Cheapflights users on 6/22. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/274:25 pm
KEF
-
ORD
Nonstop6h 50m
Icelandair
Mon 8/3110:25 pm
ORD
-
KEF
Nonstop6h 05m
Icelandair
Deal found 6/22$620
This Icelandair deal was found by Cheapflights users on 6/21. 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 8/35:00 pm
KEF
-
MDW
1 stop10h 00m
Multiple Airlines
Wed 8/125:15 pm
MDW
-
KEF
1 stop10h 55m
Multiple Airlines
Deal found 6/21$858
This Ticket deal was found by Cheapflights users on 6/23. 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 Ticket is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/178:45 am
KEF
-
MDW
1 stop14h 48m
Virgin Atlantic
Wed 8/261:51 pm
MDW
-
KEF
1 stop12h 09m
Virgin Atlantic
Deal found 6/23$863
This Icelandair deal was found by Cheapflights users on 6/23. 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 8/710:45 am
KEF
-
MDW
1 stop14h 30m
Multiple Airlines
Fri 8/144:10 pm
MDW
-
KEF
1 stop9h 25m
Multiple Airlines
Deal found 6/23$878
This KLM deal was found by Cheapflights users on 6/22. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/178:45 am
KEF
-
MDW
1 stop14h 48m
KLM
Wed 8/267:25 pm
MDW
-
KEF
1 stop30h 35m
KLM
Deal found 6/22$894

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 June 25, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$580
(Ticket)

One-way from

$398
(Mytrip)

Good one-way deal

$536 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 June 25, 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

Cheapest round-trip
Quickest round-trip

ReykjavikChicago

KEF - ORD

KEFORD

Reykjavik Keflavik Intl

Mon 8/17

4:25 pm-6:15 pm

Nonstop6h 50m

Chicago O'Hare Intl

Wed 8/26

10:25 pm-9:30 am

Nonstop6h 05m

$597

ReykjavikChicago

KEF - ORD

KEFORD

Reykjavik Keflavik Intl

Mon 7/20

4:25 pm-6:15 pm

Nonstop6h 50m

Chicago O'Hare Intl

Wed 7/29

10:56 am-6:05 am

1 stop14h 09m

$743

ReykjavikChicago

KEF - ORD

KEFORD

Reykjavik Keflavik Intl

Mon 7/20

4:25 pm-6:15 pm

Nonstop6h 50m

Chicago O'Hare Intl

Wed 7/29

6:00 am-6:05 am

2 stops19h 05m

$785

ReykjavikChicago

KEF - ORD

KEFORD

Reykjavik Keflavik Intl

Mon 8/3

4:25 pm-6:15 pm

Nonstop6h 50m

Chicago O'Hare Intl

Wed 8/12

10:56 am-6:05 am

1 stop14h 09m

$788

ReykjavikChicago

KEF - ORD

KEFORD

Reykjavik Keflavik Intl

Mon 8/3

9:15 am-8:29 pm

2 stops16h 14m

Chicago O'Hare Intl

Wed 8/12

2:00 pm-7:55 am

2 stops12h 55m

$853

ReykjavikChicago

KEF - MDW

KEFMDW

Reykjavik Keflavik Intl

Mon 8/3

5:00 pm-10:00 pm

1 stop10h 00m

Chicago Midway

Wed 8/12

5:15 pm-9:10 am

1 stop10h 55m

$858

ReykjavikChicago

KEF - MDW

KEFMDW

Reykjavik Keflavik Intl

Mon 8/17

8:45 am-6:33 pm

1 stop14h 48m

Chicago Midway

Wed 8/26

1:51 pm-7:00 am

1 stop12h 09m

$864

ReykjavikChicago

KEF - ORD

KEFORD

Reykjavik Keflavik Intl

Wed 8/5

12:00 pm-1:50 pm

Nonstop6h 50m

Chicago O'Hare Intl

Wed 8/12

9:35 pm-8:50 am

Nonstop6h 15m

$868

ReykjavikChicago

KEF - ORD

KEFORD

Reykjavik Keflavik Intl

Mon 8/3

12:00 pm-1:50 pm

Nonstop6h 50m

Chicago O'Hare Intl

Wed 8/12

3:00 pm-8:30 am

2 stops12h 30m

$868

ReykjavikChicago

KEF - ORD

KEFORD

Reykjavik Keflavik Intl

Mon 7/20

9:15 am-8:05 pm

1 stop15h 50m

Chicago O'Hare Intl

Wed 7/29

3:00 pm-8:30 am

2 stops12h 30m

$870

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/19

Showing 1-10 of 31 resultsSorted by cheapest first
1
2
3
4
  • 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 June 25, 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.

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 June 25, 2026.

The most flights from KEF to CHI are scheduled on a Tuesday (8 on average). You will have fewer flight options on Thursday, which is when the least amount of flights are scheduled (6 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 Icelandair, Air Canada, or Virgin Atlantic 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 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 (98%), Austrian Airlines (97%), Brussels Airlines (97%).

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

    Looking at all options, your cheapest flight can be booked for $447. While the most popular route (Reykjavik Keflavik Intl - Chicago O'Hare Intl) can be booked for $580 on average, our data indicates $606 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
Benton Harbor
Lansing
Merrillville
Hammond
Porter

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.

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.
Site
©2026 Cheapflights