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Keflavik Intl

$289+ 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 3/22. Fares are subject to change and may not be available on all flights or dates of travel.
CHI — KEF
jan 22 — jan 291
qui 1/22
qui 1/29
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

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Cheapflights Tip: The best prices from Chicago to Reykjavik Keflavik Intl are usually found in December or January, booked 56 days in advance, depart on a Thursday or Wednesday 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 dezembro 23, 2025.

This Flightnetwork deal was found by Cheapflights users on 12/22. 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 Flightnetwork is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ter 12/236:30 pmORD - KEF
Nonstop6h 15mIcelandair
sáb 12/274:30 pmKEF - ORD
Nonstop6h 50mIcelandair
Deal found 12/22$819
This Expedia deal was found by Cheapflights users on 12/20. 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.
ter 12/236:30 pmORD - KEF
Nonstop6h 15mIcelandair
qui 12/254:30 pmKEF - ORD
Nonstop6h 50mIcelandair
Deal found 12/20$833
This Cheapflightsfares deal was found by Cheapflights users on 12/21. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
seg 12/226:30 pmORD - KEF
Nonstop6h 15mIcelandair
qui 12/254:30 pmKEF - ORD
Nonstop6h 50mIcelandair
Deal found 12/21$851
This Flightnetwork deal was found by Cheapflights users on 12/21. 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 Flightnetwork is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
seg 12/226:30 pmORD - KEF
Nonstop6h 15mIcelandair
qua 12/244:30 pmKEF - ORD
Nonstop6h 50mIcelandair
Deal found 12/21$930
This Cheapflightsfares deal was found by Cheapflights users on 12/20. 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.
qua 12/246:30 pmORD - KEF
Nonstop6h 15mIcelandair
seg 12/294:30 pmKEF - ORD
Nonstop6h 50mIcelandair
Deal found 12/20$1,086
This CheapOair deal was found by Cheapflights users on 12/22. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ter 12/309:05 pmORD - KEF
2 stops58h 15mMultiple Airlines
ter 1/63:20 pmKEF - ORD
1 stop34h 45mMultiple Airlines
Deal found 12/22$1,121
This CrystalTravel deal was found by Cheapflights users on 12/20. 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.
dom 12/216:30 pmORD - KEF
Nonstop6h 15mIcelandair
sáb 12/274:30 pmKEF - ORD
Nonstop6h 50mIcelandair
Deal found 12/20$1,122
This CrystalTravel deal was found by Cheapflights users on 12/20. 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.
qua 12/246:30 pmORD - KEF
Nonstop6h 15mIcelandair
sex 12/264:30 pmKEF - ORD
Nonstop6h 50mIcelandair
Deal found 12/20$1,126
This Kiwi.com deal was found by Cheapflights users on 12/20. 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.
ter 12/236:30 pmORD - KEF
Nonstop6h 15mMultiple Airlines
qui 12/254:50 pmKEF - ORD
1 stop26h 07mMultiple Airlines
Deal found 12/20$1,131
This Cheapflightsfares deal was found by Cheapflights users on 12/21. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom 12/216:30 pmORD - KEF
Nonstop6h 15mIcelandair
seg 12/294:30 pmKEF - ORD
Nonstop6h 50mIcelandair
Deal found 12/21$1,162
This Gotogate deal was found by Cheapflights users on 12/21. 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.
dom 12/216:30 pmORD - KEF
Nonstop6h 15mIcelandair
qui 12/254:30 pmKEF - ORD
Nonstop6h 50mIcelandair
Deal found 12/21$1,163
This FlightHub deal was found by Cheapflights users on 12/21. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
seg 12/226:30 pmORD - KEF
Nonstop6h 15mMultiple Airlines
qui 12/255:00 pmKEF - ORD
1 stop31h 46mMultiple Airlines
Deal found 12/21$1,177

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 dezembro 23, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$375
(Flightnetwork)

One-way from

$289
(Trip.com)

Popular in

July

Cheapest in

December

Average price

$558

Good round-trip deal

$436 or less

Good one-way deal

$372 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. 9% potential increase in price ($64 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($10 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
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 dezembro 23, 2025.
Use the filters below to find and compare flights from Chicago to Reykjavik Keflavik Intl Airport that are best for you.

Fly from

Chicago

Fly to

Keflavik Intl

Route

Depart

Return

Price

ChicagoReykjavik

ORD - KEF

ORDKEF

Chicago O'Hare Intl

ter 2/10

6:30 pm-6:45 am

Nonstop6h 15m

Reykjavik Keflavik Intl

sáb 2/14

4:30 pm-5:20 pm

Nonstop6h 50m

$398

ChicagoReykjavik

ORD - KEF

ORDKEF

Chicago O'Hare Intl

ter 2/24

6:30 pm-6:45 am

Nonstop6h 15m

Reykjavik Keflavik Intl

seg 3/2

4:30 pm-5:20 pm

Nonstop6h 50m

$398

ChicagoReykjavik

ORD - KEF

ORDKEF

Chicago O'Hare Intl

sex 2/20

6:30 pm-6:45 am

Nonstop6h 15m

Reykjavik Keflavik Intl

ter 3/3

4:30 pm-5:20 pm

Nonstop6h 50m

$398

ChicagoReykjavik

ORD - KEF

ORDKEF

Chicago O'Hare Intl

qua 2/25

6:30 pm-6:45 am

Nonstop6h 15m

Reykjavik Keflavik Intl

seg 3/2

4:30 pm-5:20 pm

Nonstop6h 50m

$439

ChicagoReykjavik

ORD - KEF

ORDKEF

Chicago O'Hare Intl

qua 2/25

10:00 am-6:05 am

1 stop14h 05m

Reykjavik Keflavik Intl

seg 3/2

4:30 pm-5:20 pm

Nonstop6h 50m

$561

ChicagoReykjavik

ORD - KEF

ORDKEF

Chicago O'Hare Intl

ter 1/20

6:30 pm-6:45 am

Nonstop6h 15m

Reykjavik Keflavik Intl

ter 1/27

5:00 pm-5:43 pm

1 stop30h 43m

$570

ChicagoReykjavik

ORD - KEF

ORDKEF

Chicago O'Hare Intl

sáb 1/24

7:20 pm-12:15 pm

2 stops34h 55m

Reykjavik Keflavik Intl

sáb 1/31

11:25 am-4:55 pm

1 stop35h 30m

$600

ChicagoReykjavik

ORD - KEF

ORDKEF

Chicago O'Hare Intl

sáb 2/21

7:20 pm-10:45 am

1 stop33h 25m

Reykjavik Keflavik Intl

ter 3/3

11:30 am-4:45 pm

1 stop35h 15m

$625

ChicagoReykjavik

ORD - KEF

ORDKEF

Chicago O'Hare Intl

seg 1/12

6:45 am-6:05 am

1 stop17h 20m

Reykjavik Keflavik Intl

qua 1/21

5:00 pm-5:43 pm

1 stop30h 43m

$633

ChicagoReykjavik

ORD - KEF

ORDKEF

Chicago O'Hare Intl

sáb 2/21

7:20 pm-11:00 am

2 stops57h 40m

Reykjavik Keflavik Intl

qui 3/5

11:30 am-4:55 pm

2 stops35h 25m

$662

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/22

Showing 1-10 of 33 results
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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 December.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
eDreamsPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice 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 eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Chicago-Reykjavik Keflavik Intl Airport flight deals on Cheapflights vs. eDreams >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 eDreams the most. eDreams 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 December 19, 2025.

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 $586). 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 dezembro 23, 2025.

Unlike in the morning, when flights are generally more expensive, you can save up to 18% on flights from Chicago to Reykjavik Keflavik Intl Airport by exploring options for tickets at noon.

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 dezembro 23, 2025.
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
9,106 reviews

Comfort

7.3

Overall

7.4

Crew

8.1

Entertainment

7.1

Food

6.6

Boarding

7.7

Reviews

1 / 20
10.0
Excellent

Michelle,Dec 2025

DEN - MKE

I liked that the plane waited 5 minutes for a family whose incoming plane was late. This was the last flight of the day to MKE. Flight attendants actually checked in throughout the flight. Although, not really friendly. Happy to see screens on seat backs again. This is my first time not flying first class in over 10 years. It was economy plus.
United Airlines
7.4
Good
9,106 reviews
United Airlines
7.4
Good
9,106 reviews

Comfort

7.3

Overall

7.4

Crew

8.1

Entertainment

7.1

Food

6.6

Boarding

7.7

Reviews

1 / 20
10.0
Excellent

Michelle,Dec 2025

DEN - MKE

I liked that the plane waited 5 minutes for a family whose incoming plane was late. This was the last flight of the day to MKE. Flight attendants actually checked in throughout the flight. Although, not really friendly. Happy to see screens on seat backs again. This is my first time not flying first class in over 10 years. It was economy plus.
Icelandair
7.0
Good
592 reviews
United Airlines
7.4
Good
9,106 reviews

Comfort

7.3

Overall

7.4

Crew

8.1

Entertainment

7.1

Food

6.6

Boarding

7.7

Reviews

1 / 20
10.0
Excellent

Michelle,Dec 2025

DEN - MKE

I liked that the plane waited 5 minutes for a family whose incoming plane was late. This was the last flight of the day to MKE. Flight attendants actually checked in throughout the flight. Although, not really friendly. Happy to see screens on seat backs again. This is my first time not flying first class in over 10 years. It was economy plus.

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. Generally, flights for this route are nonstop.

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

    Icelandair, at $351, 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 44% 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 $215. While the most popular route (Chicago O'Hare Intl - Reykjavik Keflavik Intl) can be booked for $350 on average, our data indicates $1,189 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 $586). 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
Midway to Keflavik Intl flights
St. Louis to Keflavik Intl flights
Peoria to Keflavik Intl flights
Moline 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 dezembro 23, 2025.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest$351Average$636FlexibilityNo cancel feeOn-time76%
United AirlinesCheapest$612Average$705FlexibilityNo cancel feeOn-time69%

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