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Keflavik Intl

$343+ Cheap flights from Chicago (CHI) to Keflavik Intl (KEF)

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 9/18. Fares are subject to change and may not be available on all flights or dates of travel.
CHI — KEF
Jul 27 — Aug 31
Mon 7/27
Mon 8/3
1 adult, Economy
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Cheapflights Tip: The best prices from Chicago to Reykjavik Keflavik Intl are usually found in January or February, booked 78 days in advance, depart on a Wednesday or Thursday and return on a Wednesday

Cheap flight deals from Chicago to Keflavik Intl

Cheapest flights from Chicago to Keflavik Intl
Explore the most affordable flight options available from Chicago to Keflavik Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 27, 2026.

This Air Canada deal was found by Cheapflights users on 6/25. 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 Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/210:40 am
ORD
-
KEF
2 stops17h 05m
Air Canada
Mon 10/510:00 am
KEF
-
ORD
2 stops26h 44m
Air Canada
Deal found 6/25$432
This Delta deal was found by Cheapflights users on 6/26. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/146:58 pm
MDW
-
KEF
1 stop7h 42m
Delta
Tue 7/289:30 am
KEF
-
MDW
1 stop13h 48m
Delta
Deal found 6/26$433
This KLM deal was found by Cheapflights users on 6/25. 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.
Tue 7/1411:30 am
ORD
-
KEF
1 stop15h 10m
KLM
Tue 7/218:45 am
KEF
-
ORD
1 stop12h 38m
KLM
Deal found 6/25$433
This United Airlines deal was found by Cheapflights users on 6/25. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/1812:55 pm
ORD
-
KEF
1 stop14h 35m
United Airlines
Sat 9/2612:00 pm
KEF
-
ORD
Nonstop6h 55m
United Airlines
Deal found 6/25$434
This Air Canada deal was found by Cheapflights users on 6/25. 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 Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/208:40 am
ORD
-
KEF
1 stop18h 15m
Air Canada
Mon 8/319:15 am
KEF
-
ORD
1 stop15h 50m
Air Canada
Deal found 6/25$435
This FlightHub deal was found by Cheapflights users on 6/25. 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.
Sat 8/2910:40 am
ORD
-
KEF
2 stops40h 15m
Air Canada
Fri 9/49:15 am
KEF
-
ORD
1 stop15h 50m
Air Canada
Deal found 6/25$436
This United Airlines deal was found by Cheapflights users on 6/25. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/293:55 pm
ORD
-
KEF
1 stop10h 05m
United Airlines
Fri 9/49:15 am
KEF
-
ORD
1 stop15h 50m
United Airlines
Deal found 6/25$437
This Delta deal was found by Cheapflights users on 6/25. 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.
Tue 7/141:18 pm
MDW
-
KEF
2 stops15h 12m
Delta
Wed 7/228:45 am
KEF
-
MDW
1 stop8h 53m
Delta
Deal found 6/25$438
This KLM deal was found by Cheapflights users on 6/25. 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.
Tue 7/142:07 pm
ORD
-
KEF
2 stops11h 53m
Multiple Airlines
Tue 7/218:45 am
KEF
-
ORD
1 stop12h 38m
Multiple Airlines
Deal found 6/25$438
This Air France deal was found by Cheapflights users on 6/27. 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.
Sat 6/276:55 pm
MDW
-
KEF
1 stop31h 05m
Multiple Airlines
Thu 7/98:45 am
KEF
-
MDW
1 stop14h 40m
Multiple Airlines
Deal found 6/27$439
This Delta deal was found by Cheapflights users on 6/26. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/178:25 pm
ORD
-
KEF
1 stop29h 35m
Delta
Wed 9/239:30 am
KEF
-
ORD
1 stop17h 03m
Delta
Deal found 6/26$439
This United Airlines deal was found by Cheapflights users on 6/25. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/139:35 pm
ORD
-
KEF
Nonstop6h 15m
United Airlines
Sat 9/1911:00 am
KEF
-
ORD
1 stop10h 34m
United Airlines
Deal found 6/25$440

Find flight deals from Chicago to Keflavik Intl

Discover tips and strategies to find the most affordable flight options for your journey from Chicago (CHI) to Keflavik Intl (KEF). 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 27, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$428
(Kiwi.com)

One-way from

$343
(oojo)

Popular in

July

Cheapest in

January

Average price

$762

Good round-trip deal

$710 or less

Good one-way deal

$322 or less
Provider with most accurate pricing for Chicago (CHI)-Reykjavik Keflavik Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for Chicago (CHI)-Reykjavik Keflavik Intl flights.
Search Deals
From Chicago (CHI) to Reykjavik Keflavik Intl
Search Deals
One-way flight from Chicago (CHI) to Reykjavik Keflavik Intl
Search Deals
Highest demand for flights based on searches. 18% potential increase in price ($144 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($16 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in June 2026
Search Deals
Price to beat on a round-trip flight from Chicago (CHI) to Reykjavik Keflavik Intl.
Search Deals
Price to beat on a one-way flight from Chicago (CHI) to Reykjavik Keflavik Intl.
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Chicago to Keflavik Intl 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 27, 2026.
Use the filters below to find and compare flights from Chicago to Reykjavik Keflavik Intl Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

ChicagoReykjavik

MDW - KEF

MDWKEF

Chicago Midway

Tue 7/14

1:18 pm-7:40 am

1 stop13h 22m

Reykjavik Keflavik Intl

Wed 7/22

8:45 am-12:38 pm

1 stop8h 53m

$433

ChicagoReykjavik

MDW - KEF

MDWKEF

Chicago Midway

Sat 7/18

1:18 pm-7:40 am

1 stop13h 22m

Reykjavik Keflavik Intl

Tue 7/28

8:45 am-10:15 pm

2 stops18h 30m

$438

ChicagoReykjavik

MDW - KEF

MDWKEF

Chicago Midway

Sat 7/25

1:49 pm-7:40 am

2 stops12h 51m

Reykjavik Keflavik Intl

Sat 8/1

8:45 am-6:07 pm

1 stop14h 22m

$438

ChicagoReykjavik

ORD - KEF

ORDKEF

Chicago O'Hare Intl

Tue 7/21

8:21 pm-7:00 am

1 stop29h 39m

Reykjavik Keflavik Intl

Wed 7/29

9:30 am-3:05 pm

1 stop10h 35m

$439

ChicagoReykjavik

ORD - KEF

ORDKEF

Chicago O'Hare Intl

Thu 10/1

9:00 am-7:55 am

2 stops17h 55m

Reykjavik Keflavik Intl

Sun 10/4

9:15 am-8:29 pm

2 stops16h 14m

$526
Quickest round-trip

ChicagoReykjavik

ORD - KEF

ORDKEF

Chicago O'Hare Intl

Thu 9/17

9:35 pm-8:50 am

Nonstop6h 15m

Reykjavik Keflavik Intl

Wed 9/23

12:00 pm-1:55 pm

Nonstop6h 55m

$528

ChicagoReykjavik

ORD - KEF

ORDKEF

Chicago O'Hare Intl

Wed 7/22

6:00 am-7:00 am

1 stop20h 00m

Reykjavik Keflavik Intl

Wed 7/29

9:50 am-8:00 am

1 stop27h 10m

$529

ChicagoReykjavik

ORD - KEF

ORDKEF

Chicago O'Hare Intl

Thu 9/17

9:35 pm-8:50 am

Nonstop6h 15m

Reykjavik Keflavik Intl

Sat 9/26

12:00 pm-1:55 pm

Nonstop6h 55m

$530

ChicagoReykjavik

ORD - KEF

ORDKEF

Chicago O'Hare Intl

Mon 8/3

8:40 am-7:55 am

1 stop18h 15m

Reykjavik Keflavik Intl

Tue 8/11

12:00 pm-1:50 pm

Nonstop6h 50m

$532

ChicagoReykjavik

ORD - KEF

ORDKEF

Chicago O'Hare Intl

Thu 7/16

11:05 am-7:55 am

1 stop15h 50m

Reykjavik Keflavik Intl

Sun 7/26

11:30 am-6:50 pm

1 stop12h 20m

$542

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/24

Showing 1-10 of 43 resultsSorted by cheapest first
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Compare providers for flights from Chicago to Keflavik Intl

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 Chicago to Keflavik Intl in June.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice Accuracy3 starsTrust Score*3 stars
eDreamsPrice Accuracy2 starsTrust Score*3 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 Chicago-Reykjavik Keflavik Intl Airport flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Chicago-Reykjavik Keflavik Intl Airport flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Chicago-Reykjavik Keflavik Intl Airport flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Chicago-Reykjavik Keflavik Intl Airport 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 Chicago-Reykjavik Keflavik Intl Airport 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 Chicago to Keflavik Intl

Have a flexible travel schedule? Discover the best time to fly to Keflavik Intl from Chicago 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 Chicago to Reykjavik Keflavik Intl Airport

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

Currently, March is the cheapest month in which you can book a flight from Chicago to Reykjavik Keflavik Intl Airport (average of $173). Flying from Chicago to Reykjavik Keflavik Intl Airport in July is currently the most expensive (average of $529). 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.

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

Find hourly flight availability from Chicago to Keflavik Intl. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated June 27, 2026.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Chicago to Reykjavik Keflavik Intl Airport as you normally would.

Weekly flight availability from Chicago to Reykjavik Keflavik Intl Airport

Explore weekly flight availability from Chicago to Keflavik Intl. 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 27, 2026.

The most flights from CHI to KEF are scheduled on a Monday (7 on average). You will have fewer flight options on Thursday, which is when the least amount of flights are scheduled (6 on average).

How much does it cost to fly round-trip from Chicago to Reykjavik Keflavik Intl Airport?

How far ahead should I book a flight from Chicago to Reykjavik Keflavik Intl Airport?

The best time to book flights from Chicago to Reykjavik Keflavik Intl Airport is 46 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

Reviews of airlines servicing Keflavik Intl

Get insights into the airlines that provide service to Keflavik Intl. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Keflavik Intl. Reviews last updated June 27, 2026.
Get a feel of what it's like to fly with United Airlines and Icelandair from Chicago to Reykjavik Keflavik Intl Airport by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
9,901 reviews

Boarding

7.7

Entertainment

7.1

Overall

7.4

Comfort

7.3

Crew

8.1

Food

6.6

Reviews

1 / 20
8.0
Excellent

Ruth,Dec 2024

ORD - AMS

United Airlines flights seem to always use a bus to/from the boarding gate to the plane. Can they not get their own gate? This time there was no lift when leaving the plane and people in wheelchairs somehow had to climb down the steps to the ground to get to the bus. I udon’t know how some managed that!
United Airlines
7.4
Good
9,901 reviews
United Airlines
7.4
Good
9,901 reviews

Boarding

7.7

Entertainment

7.1

Overall

7.4

Comfort

7.3

Crew

8.1

Food

6.6

Reviews

1 / 20
8.0
Excellent

Ruth,Dec 2024

ORD - AMS

United Airlines flights seem to always use a bus to/from the boarding gate to the plane. Can they not get their own gate? This time there was no lift when leaving the plane and people in wheelchairs somehow had to climb down the steps to the ground to get to the bus. I udon’t know how some managed that!
Icelandair
7.0
Good
692 reviews
United Airlines
7.4
Good
9,901 reviews

Boarding

7.7

Entertainment

7.1

Overall

7.4

Comfort

7.3

Crew

8.1

Food

6.6

Reviews

1 / 20
8.0
Excellent

Ruth,Dec 2024

ORD - AMS

United Airlines flights seem to always use a bus to/from the boarding gate to the plane. Can they not get their own gate? This time there was no lift when leaving the plane and people in wheelchairs somehow had to climb down the steps to the ground to get to the bus. I udon’t know how some managed that!

Related info for your journey

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

    Departing from Chicago to Reykjavik Keflavik Intl Airport will take you 6h 15m. The distance between Chicago and Reykjavik Keflavik Intl Airport is about 2934 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • What are the cheapest airlines flying from Chicago to Reykjavik Keflavik Intl Airport round-trip?

    Icelandair, at $347, was found to be the cheapest airline from Chicago to Reykjavik Keflavik Intl Airport. An alternate airline flying to your destination would be United Airlines. Users have found that Icelandair is 43% cheaper than the other options available to this destination.

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

    The top 3 most reliable airlines when flying from Chicago to Reykjavik Keflavik Intl Airport are Icelandair (65%), Air Canada (56%) and Austrian Airlines (56%).

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

    Looking at all options, your cheapest flight can be booked for $271. While the most popular route (Chicago O'Hare Intl - Reykjavik Keflavik Intl) can be booked for $167 on average, our data indicates $1,236 when flying from Chicago to Reykjavik Keflavik Intl Airport.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Chicago to Keflavik Intl 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 Chicago to Reykjavik Keflavik Intl Airport?

    Currently, March is the cheapest month in which you can book a flight from Chicago to Reykjavik Keflavik Intl Airport (average of $173). Flying from Chicago to Reykjavik Keflavik Intl Airport in July is currently the most expensive (average of $529). 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

Traveling to a place near Reykjavik Keflavik Intl Airport?

Book flights to Reykjavik Keflavik Intl Airport if you plan to visit one of these locations
Keflavik
Hveragerdi

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Alternative routes for Chicago to Keflavik Intl

See prices for flight routes from nearby airports that may be better suited for you.
O'Hare Intl to Keflavik Intl flights
St. Louis to Keflavik Intl flights
Peoria to Keflavik Intl flights

Top 2 airlines flying from Chicago to Keflavik Intl

Discover the top 2 airlines that operate flights from Chicago to Keflavik Intl. 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 June 27, 2026.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest$347Average$637FlexibilityNo cancel feeOn-time76%
United AirlinesCheapest$614Average$884FlexibilityNo cancel feeOn-time69%

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