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Keflavik Intl

$325+ 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 8/25. Fares are subject to change and may not be available on all flights or dates of travel.
CHI — KEF
Mar 31 — Apr 71
Tue 3/31
Tue 4/7
1 adult, Economy
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Find cheap flights from Chicago to Keflavik Intl 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”

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Cheapflights Tip: The best prices from Chicago to Reykjavik Keflavik Intl are usually found in January or February, booked 56 days in advance, depart on a Wednesday or Tuesday and return on a Thursday

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 March 1, 2026.

This Flightnetwork deal was found by Cheapflights users on 3/1. 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 Flightnetwork is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/1910:25 pm
ORD
-
KEF
Nonstop6h 05m
Icelandair
Sat 4/254:25 pm
KEF
-
ORD
Nonstop6h 50m
Icelandair
Deal found 3/1$448
This Gotogate deal was found by Cheapflights users on 2/25. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/217:25 pm
ORD
-
KEF
Nonstop6h 15m
Icelandair
Sun 4/264:25 pm
KEF
-
ORD
Nonstop6h 50m
Icelandair
Deal found 2/25$451
This CrystalTravel deal was found by Cheapflights users on 2/26. 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 CrystalTravel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/1210:25 pm
ORD
-
KEF
Nonstop6h 05m
Icelandair
Fri 4/174:25 pm
KEF
-
ORD
Nonstop6h 50m
Icelandair
Deal found 2/26$455
This Kiwi.com deal was found by Cheapflights users on 3/1. 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.
Sun 4/1210:25 pm
ORD
-
KEF
Nonstop6h 05m
Icelandair
Thu 4/234:25 pm
KEF
-
ORD
Nonstop6h 50m
Icelandair
Deal found 3/1$473
This Mytrip deal was found by Cheapflights users on 2/25. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/225:05 am
ORD
-
KEF
2 stops20h 10m
Multiple Airlines
Mon 4/275:00 pm
KEF
-
ORD
1 stop11h 05m
Multiple Airlines
Deal found 2/25$504
This Cheapflightsfares deal was found by Cheapflights users on 2/26. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/217:25 pm
ORD
-
KEF
Nonstop6h 15m
Icelandair
Thu 5/74:25 pm
KEF
-
ORD
Nonstop6h 50m
Icelandair
Deal found 2/26$509
This CrystalTravel deal was found by Cheapflights users on 3/1. 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 CrystalTravel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/197:25 pm
ORD
-
KEF
Nonstop6h 15m
Icelandair
Sun 4/264:25 pm
KEF
-
ORD
Nonstop6h 50m
Icelandair
Deal found 3/1$511
This eDestinos deal was found by Cheapflights users on 2/26. 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 eDestinos is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/177:20 pm
ORD
-
KEF
1 stop33h 25m
Scandinavian Airlines
Thu 11/266:05 pm
KEF
-
ORD
1 stop28h 40m
Scandinavian Airlines
Deal found 2/26$522
This deal was found by Cheapflights users on 2/25. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/227:25 pm
ORD
-
KEF
Nonstop6h 15m
Icelandair
Sun 4/267:45 pm
KEF
-
ORD
Nonstop6h 40m
Icelandair
Deal found 2/25$544
This Expedia deal was found by Cheapflights users on 2/27. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/141:24 pm
MDW
-
KEF
2 stops15h 06m
Virgin Atlantic
Tue 4/2111:25 am
KEF
-
MDW
2 stops16h 03m
Virgin Atlantic
Deal found 2/27$717
This Delta deal was found by Cheapflights users on 2/27. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/2110:41 am
MDW
-
KEF
2 stops17h 49m
Delta
Thu 4/3011:25 am
KEF
-
MDW
2 stops16h 03m
Delta
Deal found 2/27$729
This KLM deal was found by Cheapflights users on 2/27. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/181:00 pm
MDW
-
KEF
1 stop12h 20m
KLM
Tue 8/258:50 am
KEF
-
MDW
1 stop14h 41m
KLM
Deal found 2/27$730

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 March 1, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$449
(CrystalTravel)

One-way from

$363
(Kiwi.com)

Popular in

July

Cheapest in

January

Average price

$630

Good round-trip deal

$532 or less

Good one-way deal

$323 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. 12% potential increase in price ($83 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($14 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in March 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 March 1, 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

ChicagoReykjavik

ORD - KEF

ORDKEF

Chicago O'Hare Intl

Fri 8/14

9:40 pm-8:50 am

1 stop30h 10m

Reykjavik Keflavik Intl

Mon 8/24

9:15 am-10:16 am

1 stop30h 01m

$722

ChicagoReykjavik

ORD - KEF

ORDKEF

Chicago O'Hare Intl

Tue 4/14

1:06 pm-9:30 am

1 stop15h 24m

Reykjavik Keflavik Intl

Tue 4/21

11:25 am-9:57 pm

1 stop15h 32m

$725

ChicagoReykjavik

ORD - KEF

ORDKEF

Chicago O'Hare Intl

Thu 4/16

9:30 pm-7:55 am

1 stop29h 25m

Reykjavik Keflavik Intl

Sun 4/19

5:15 pm-5:50 pm

1 stop29h 35m

$727

ChicagoReykjavik

MDW - KEF

MDWKEF

Chicago Midway

Tue 4/14

1:24 pm-9:30 am

2 stops15h 06m

Reykjavik Keflavik Intl

Thu 4/23

11:25 am-10:28 pm

2 stops16h 03m

$729

ChicagoReykjavik

ORD - KEF

ORDKEF

Chicago O'Hare Intl

Tue 4/14

11:08 am-9:30 am

1 stop17h 22m

Reykjavik Keflavik Intl

Thu 4/23

11:25 am-8:16 pm

2 stops13h 51m

$729

ChicagoReykjavik

ORD - KEF

ORDKEF

Chicago O'Hare Intl

Mon 5/4

11:19 am-9:30 am

2 stops17h 11m

Reykjavik Keflavik Intl

Mon 5/11

8:50 am-8:19 pm

1 stop16h 29m

$744

ChicagoReykjavik

ORD - KEF

ORDKEF

Chicago O'Hare Intl

Thu 8/27

3:40 pm-7:55 am

1 stop11h 15m

Reykjavik Keflavik Intl

Tue 9/8

12:00 pm-1:55 pm

Nonstop6h 55m

$759

ChicagoReykjavik

MDW - KEF

MDWKEF

Chicago Midway

Tue 4/14

12:50 pm-6:25 am

2 stops12h 35m

Reykjavik Keflavik Intl

Tue 4/21

5:00 pm-7:35 am

1 stop19h 35m

$860

ChicagoReykjavik

MDW - KEF

MDWKEF

Chicago Midway

Thu 4/16

12:52 pm-9:30 am

2 stops15h 38m

Reykjavik Keflavik Intl

Mon 4/20

11:25 am-10:28 pm

2 stops16h 03m

$891

ChicagoReykjavik

ORD - KEF

ORDKEF

Chicago O'Hare Intl

Thu 4/16

11:08 am-9:30 am

1 stop17h 22m

Reykjavik Keflavik Intl

Wed 4/22

11:25 am-8:16 pm

2 stops13h 51m

$891

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/25

Showing 1-10 of 40 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 March.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
AranGrantPrice Accuracy2 starsTrust Score*2 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
eDreamsPrice Accuracy3 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

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

Use this chart to determine the optimal time to book a round-trip flight from Chicago to Keflavik Intl. Price data was last updated on February 27, 2026.

The best time to book flights from Chicago to Reykjavik Keflavik Intl Airport is 56 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.

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

Currently, September is the cheapest month in which you can book a flight from Chicago to Reykjavik Keflavik Intl Airport (average of $313). Flying from Chicago to Reykjavik Keflavik Intl Airport in July is currently the most expensive (average of $583). 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 March 1, 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 March 1, 2026.

The most flights from CHI to KEF are scheduled on a Monday (2 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (1 on average).

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

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 March 1, 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
9,371 reviews

Comfort

7.3

Overall

7.4

Entertainment

7.1

Food

6.6

Boarding

7.7

Crew

8.1

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family
United Airlines
7.4
Good
9,371 reviews
United Airlines
7.4
Good
9,371 reviews

Comfort

7.3

Overall

7.4

Entertainment

7.1

Food

6.6

Boarding

7.7

Crew

8.1

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family
Icelandair
7.1
Good
617 reviews
United Airlines
7.4
Good
9,371 reviews

Comfort

7.3

Overall

7.4

Entertainment

7.1

Food

6.6

Boarding

7.7

Crew

8.1

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family

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 11h 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 $349, 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 cheapest flights from Chicago to Reykjavik Keflavik Intl Airport?

    Looking at all options, your cheapest flight can be booked for $200. While the most popular route (Chicago O'Hare Intl - Reykjavik Keflavik Intl) can be booked for $451 on average, our data indicates $1,311 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, September is the cheapest month in which you can book a flight from Chicago to Reykjavik Keflavik Intl Airport (average of $313). Flying from Chicago to Reykjavik Keflavik Intl Airport in July is currently the most expensive (average of $583). 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 March 1, 2026.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest$349Average$619FlexibilityNo cancel feeOn-time76%
United AirlinesCheapest$612Average$702FlexibilityNo cancel feeOn-time69%

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