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Keflavik Intl

$281+ 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 12/8. Fares are subject to change and may not be available on all flights or dates of travel.
CHI — KEF
Dec 2 — Dec 91
Tue 12/2
Tue 12/9
1 adult, Economy
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Cheapflights Tip: The best prices from Chicago to Reykjavik Keflavik Intl are usually found in January or September, booked 56 days in advance, depart on a Thursday or Wednesday and return on a Thursday

Find 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 November 2, 2025.

This Expedia deal was found by Cheapflights users on 11/1. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/36:30 pmORD - KEF
Nonstop6h 15mIcelandair
Tue 12/94:30 pmKEF - ORD
Nonstop6h 50mIcelandair
Deal found 11/1$398
This Kiwi.com deal was found by Cheapflights users on 11/1. 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.
Mon 11/106:30 pmORD - KEF
Nonstop6h 15mIcelandair
Fri 11/214:30 pmKEF - ORD
Nonstop6h 50mIcelandair
Deal found 11/1$423
This Kiwi.com deal was found by Cheapflights users on 11/1. 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 11/96:30 pmORD - KEF
Nonstop6h 15mIcelandair
Fri 11/214:30 pmKEF - ORD
Nonstop6h 50mIcelandair
Deal found 11/1$449
This eDestinos deal was found by Cheapflights users on 11/2. 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.
Mon 12/156:30 pmORD - KEF
Nonstop6h 15mIcelandair
Fri 12/264:30 pmKEF - ORD
Nonstop6h 50mIcelandair
Deal found 11/2$495
This Mytrip deal was found by Cheapflights users on 10/31. 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.
Mon 12/86:30 pmORD - KEF
Nonstop6h 15mIcelandair
Mon 12/154:30 pmKEF - ORD
Nonstop6h 50mIcelandair
Deal found 10/31$510
This CrystalTravel deal was found by Cheapflights users on 10/31. 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 11/306:30 pmORD - KEF
Nonstop6h 15mIcelandair
Sun 12/74:30 pmKEF - ORD
Nonstop6h 50mIcelandair
Deal found 10/31$513
This FlightHub deal was found by Cheapflights users on 11/1. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/186:30 pmORD - KEF
Nonstop6h 15mIcelandair
Wed 11/264:30 pmKEF - ORD
Nonstop6h 50mIcelandair
Deal found 11/1$532
This oojo deal was found by Cheapflights users on 10/31. 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.
Mon 11/176:30 pmORD - KEF
Nonstop6h 15mIcelandair
Sun 11/234:30 pmKEF - ORD
Nonstop6h 50mIcelandair
Deal found 10/31$536
This Mytrip 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/156:30 pmORD - KEF
Nonstop6h 15mIcelandair
Mon 12/224:30 pmKEF - ORD
Nonstop6h 50mIcelandair
Deal found 10/30$538
This Kiwi.com deal was found by Cheapflights users on 11/1. 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.
Mon 11/176:30 pmORD - KEF
Nonstop6h 15mIcelandair
Wed 11/264:30 pmKEF - ORD
Nonstop6h 50mIcelandair
Deal found 11/1$539
This Icelandair deal was found by Cheapflights users on 10/31. 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 12/153:45 pmMDW - KEF
1 stop8h 45mMultiple Airlines
Mon 12/224:55 pmKEF - MDW
1 stop10h 30mMultiple Airlines
Deal found 10/31$836
This Icelandair deal was found by Cheapflights users on 11/2. 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 12/43:45 pmMDW - KEF
1 stop8h 45mMultiple Airlines
Mon 12/84:55 pmKEF - MDW
1 stop20h 30mMultiple Airlines
Deal found 11/2$843

Cheap 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 November 2, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$398
(Icelandair)

One-way from

$281
(Kiwi.com)

Popular in

July

Cheapest in

January

Average price

$630

Good round-trip deal

$457 or less

Good one-way deal

$402 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. 7% potential increase in price ($53 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($8 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in November 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 November 2, 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

Thu 2/26

10:40 am-10:45 am

2 stops18h 05m

Reykjavik Keflavik Intl

Thu 3/5

11:30 am-4:55 pm

2 stops35h 25m

$536

ChicagoReykjavik

ORD - KEF

ORDKEF

Chicago O'Hare Intl

Mon 11/24

6:30 pm-6:45 am

Nonstop6h 15m

Reykjavik Keflavik Intl

Thu 12/4

4:30 pm-5:20 pm

Nonstop6h 50m

$558

ChicagoReykjavik

ORD - KEF

ORDKEF

Chicago O'Hare Intl

Thu 2/26

10:40 am-10:45 am

2 stops18h 05m

Reykjavik Keflavik Intl

Mon 3/2

7:35 am-4:45 pm

1 stop15h 10m

$613

ChicagoReykjavik

ORD - KEF

ORDKEF

Chicago O'Hare Intl

Sat 1/10

10:24 am-3:25 pm

2 stops23h 01m

Reykjavik Keflavik Intl

Sat 1/17

7:50 am-4:45 pm

1 stop14h 55m

$613

ChicagoReykjavik

ORD - KEF

ORDKEF

Chicago O'Hare Intl

Fri 1/30

7:01 am-10:40 am

2 stops21h 39m

Reykjavik Keflavik Intl

Sat 2/7

7:35 am-8:53 pm

2 stops19h 18m

$623

ChicagoReykjavik

ORD - KEF

ORDKEF

Chicago O'Hare Intl

Tue 3/31

7:25 pm-6:40 am

Nonstop6h 15m

Reykjavik Keflavik Intl

Sun 4/5

8:00 pm-9:40 pm

Nonstop6h 40m

$628

ChicagoReykjavik

ORD - KEF

ORDKEF

Chicago O'Hare Intl

Wed 4/29

7:25 pm-6:40 am

Nonstop6h 15m

Reykjavik Keflavik Intl

Tue 5/5

4:25 pm-6:15 pm

Nonstop6h 50m

$641

ChicagoReykjavik

ORD - KEF

ORDKEF

Chicago O'Hare Intl

Thu 4/30

7:25 pm-6:40 am

Nonstop6h 15m

Reykjavik Keflavik Intl

Tue 5/5

4:25 pm-6:15 pm

Nonstop6h 50m

$641

ChicagoReykjavik

ORD - KEF

ORDKEF

Chicago O'Hare Intl

Fri 5/1

1:30 pm-9:30 am

1 stop15h 00m

Reykjavik Keflavik Intl

Sun 5/10

8:50 am-7:22 pm

2 stops15h 32m

$643

ChicagoReykjavik

ORD - KEF

ORDKEF

Chicago O'Hare Intl

Thu 4/30

7:35 pm-9:30 am

2 stops32h 55m

Reykjavik Keflavik Intl

Thu 5/7

11:25 am-5:41 pm

1 stop11h 16m

$648

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/1

Showing 1-10 of 36 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 November.
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 October 31, 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 March is currently the most expensive (average of $589). 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 November 2, 2025.

Unlike in the afternoon, 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.

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 November 2, 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
8,993 reviews

Crew

8.1

Comfort

7.3

Food

6.6

Boarding

7.7

Entertainment

7.1

Overall

7.4

Reviews

1 / 20
2.0
Mediocre

Sebrena,Oct 2025

IAH - RSW

The worst that I have ever experienced in my life so bad if it was free I'm not ever going to use your Airline again I dont believe ..... very disappointed 😞 😔0000000000000
United Airlines
7.4
Good
8,993 reviews
United Airlines
7.4
Good
8,993 reviews

Crew

8.1

Comfort

7.3

Food

6.6

Boarding

7.7

Entertainment

7.1

Overall

7.4

Reviews

1 / 20
2.0
Mediocre

Sebrena,Oct 2025

IAH - RSW

The worst that I have ever experienced in my life so bad if it was free I'm not ever going to use your Airline again I dont believe ..... very disappointed 😞 😔0000000000000
Icelandair
7.1
Good
563 reviews
United Airlines
7.4
Good
8,993 reviews

Crew

8.1

Comfort

7.3

Food

6.6

Boarding

7.7

Entertainment

7.1

Overall

7.4

Reviews

1 / 20
2.0
Mediocre

Sebrena,Oct 2025

IAH - RSW

The worst that I have ever experienced in my life so bad if it was free I'm not ever going to use your Airline again I dont believe ..... very disappointed 😞 😔0000000000000

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 $360, 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 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 (81%), Air Canada (68%) and Austrian Airlines (68%).

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

    Looking at all options, your cheapest flight can be booked for $332. While the most popular route (Chicago O'Hare Intl - Reykjavik Keflavik Intl) can be booked for $359 on average, our data indicates $1,382 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 March is currently the most expensive (average of $589). 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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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 November 2, 2025.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest$360Average$642FlexibilityNo cancel feeOn-time76%
United AirlinesCheapest$612Average$702FlexibilityNo cancel feeOn-time69%

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