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Keflavik Intl

$325+ Cheap flights from O'Hare Intl (ORD) 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 2/6. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — KEF
Jan 11 — Jan 181
Sun 1/11
Sun 1/18
1 adult, Economy
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Find cheap flights from O'Hare Intl to Keflavik Intl with Cheapflights

1. Tell us where you want to go

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Cheapflights Tip: The best prices from Chicago O'Hare Intl to Reykjavik Keflavik Intl are usually found in November or January, booked 47 days in advance, depart on a Thursday or Wednesday and return on a Thursday

Cheap flight deals from O'Hare Intl to Keflavik Intl

Cheapest flights from O'Hare Intl to Keflavik Intl
Explore the most affordable flight options available from O'Hare Intl to Keflavik Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 12, 2025.

This Cheapflightsfares deal was found by Cheapflights users on 12/11. 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.
Mon 12/156:30 pmORD - KEF
Nonstop6h 15mIcelandair
Fri 12/264:30 pmKEF - ORD
Nonstop6h 50mIcelandair
Deal found 12/11$671
This KAYAK deal was found by Cheapflights users on 12/10. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/316:50 pmORD - KEF
1 stop36h 30mSWISS
Sat 1/102:20 pmKEF - ORD
2 stops53h 50mSWISS
Deal found 12/10$726
This KAYAK deal was found by Cheapflights users on 12/10. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/306:30 pmORD - KEF
Nonstop6h 15mIcelandair
Thu 1/84:30 pmKEF - ORD
Nonstop6h 50mIcelandair
Deal found 12/10$826
This KAYAK deal was found by Cheapflights users on 12/10. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/296:30 pmORD - KEF
Nonstop6h 15mIcelandair
Thu 1/84:30 pmKEF - ORD
Nonstop6h 50mIcelandair
Deal found 12/10$861
This KAYAK deal was found by Cheapflights users on 12/10. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/316:00 pmORD - KEF
1 stop14h 15mLufthansa
Thu 1/83:10 pmKEF - ORD
2 stops31h 50mLufthansa
Deal found 12/10$879
This KAYAK deal was found by Cheapflights users on 12/10. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/304:10 pmORD - KEF
2 stops40h 05mLufthansa
Thu 1/83:10 pmKEF - ORD
2 stops31h 50mLufthansa
Deal found 12/10$904
This CrystalTravel deal was found by Cheapflights users on 12/11. 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.
Tue 12/166:30 pmORD - KEF
Nonstop6h 15mIcelandair
Sat 12/204:30 pmKEF - ORD
Nonstop6h 50mIcelandair
Deal found 12/11$943
This KAYAK deal was found by Cheapflights users on 12/10. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/317:20 pmORD - KEF
1 stop33h 25mScandinavian Airlines
Thu 1/811:30 amKEF - ORD
1 stop35h 15mScandinavian Airlines
Deal found 12/10$950
This FlightHub deal was found by Cheapflights users on 12/10. 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.
Wed 12/316:30 pmORD - KEF
Nonstop6h 15mMultiple Airlines
Fri 1/95:00 pmKEF - ORD
1 stop30h 43mMultiple Airlines
Deal found 12/10$970

Find flight deals from O'Hare Intl to Keflavik Intl

Discover tips and strategies to find the most affordable flight options for your journey from O'Hare Intl (ORD) 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 December 12, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$378
(Cheapflightsfares)

One-way from

$325
(Kiwi.com)

Popular in

June

Cheapest in

November

Average price

$591

Good round-trip deal

$452 or less

Good one-way deal

$387 or less
Provider with most accurate pricing for Chicago O'Hare Intl-Reykjavik Keflavik Intl flight deals.
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Provider most trusted by Cheapflights users for Chicago O'Hare Intl-Reykjavik Keflavik Intl flights.
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From Chicago O'Hare Intl to Reykjavik Keflavik Intl
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One-way flight from Chicago O'Hare Intl to Reykjavik Keflavik Intl
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Highest demand for flights based on searches. 10% potential increase in price ($69 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($10 potential savings vs. average RT price).
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Average for round-trip flights in December 2025
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Price to beat on a round-trip flight from Chicago O'Hare Intl to Reykjavik Keflavik Intl.
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Price to beat on a one-way flight from Chicago O'Hare Intl to Reykjavik Keflavik Intl.
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Cheapflights Fare Finder

 
Customize your flight search to find flights from O'Hare Intl 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 December 12, 2025.
Use the filters below to find and compare flights from Chicago O'Hare Intl Airport to Reykjavik Keflavik Intl Airport that are best for you.

Fly from

O'Hare Intl

Fly to

Keflavik Intl

Route

Depart

Return

Price

ChicagoReykjavik

ORD - KEF

ORDKEF

Chicago O'Hare Intl

Mon 2/2

6:30 pm-6:45 am

Nonstop6h 15m

Reykjavik Keflavik Intl

Fri 2/6

4:30 pm-5:20 pm

Nonstop6h 50m

$398

ChicagoReykjavik

ORD - KEF

ORDKEF

Chicago O'Hare Intl

Tue 3/17

7:30 pm-6:45 am

Nonstop6h 15m

Reykjavik Keflavik Intl

Tue 3/24

4:30 pm-6:20 pm

Nonstop6h 50m

$518

ChicagoReykjavik

ORD - KEF

ORDKEF

Chicago O'Hare Intl

Sun 3/29

10:40 pm-9:45 am

Nonstop6h 05m

Reykjavik Keflavik Intl

Fri 4/3

4:25 pm-6:15 pm

Nonstop6h 50m

$528

ChicagoReykjavik

ORD - KEF

ORDKEF

Chicago O'Hare Intl

Fri 1/9

8:43 pm-6:15 am

2 stops27h 32m

Reykjavik Keflavik Intl

Fri 1/16

5:00 pm-10:42 pm

1 stop11h 42m

$539

ChicagoReykjavik

ORD - KEF

ORDKEF

Chicago O'Hare Intl

Tue 5/19

9:30 pm-4:25 pm

1 stop13h 55m

Reykjavik Keflavik Intl

Wed 5/27

8:35 am-5:50 pm

1 stop14h 15m

$563

ChicagoReykjavik

ORD - KEF

ORDKEF

Chicago O'Hare Intl

Wed 3/11

10:40 am-10:45 am

2 stops19h 05m

Reykjavik Keflavik Intl

Tue 3/24

5:35 pm-5:45 pm

1 stop29h 10m

$574

ChicagoReykjavik

ORD - KEF

ORDKEF

Chicago O'Hare Intl

Tue 3/17

10:56 am-6:05 am

1 stop14h 09m

Reykjavik Keflavik Intl

Mon 3/30

8:20 pm-9:10 am

1 stop17h 50m

$612

ChicagoReykjavik

ORD - KEF

ORDKEF

Chicago O'Hare Intl

Thu 2/26

7:00 am-10:45 am

2 stops21h 45m

Reykjavik Keflavik Intl

Fri 3/6

7:35 am-4:55 pm

1 stop15h 20m

$612

ChicagoReykjavik

ORD - KEF

ORDKEF

Chicago O'Hare Intl

Fri 1/23

7:01 am-10:40 am

2 stops21h 39m

Reykjavik Keflavik Intl

Mon 1/26

7:35 am-9:35 pm

2 stops20h 00m

$622

ChicagoReykjavik

ORD - KEF

ORDKEF

Chicago O'Hare Intl

Fri 5/1

9:30 pm-7:50 am

1 stop29h 20m

Reykjavik Keflavik Intl

Thu 5/14

8:35 am-5:50 pm

1 stop14h 15m

$639

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/11

Showing 1-10 of 21 results
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Compare providers for flights from O'Hare Intl 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 O'Hare Intl 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
oojoPrice Accuracy3 starsTrust Score*3 stars
CheapflightsfaresPrice Accuracy3 starsTrust Score*2 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 O'Hare Intl Airport-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 O'Hare Intl Airport-Reykjavik Keflavik Intl Airport flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from Chicago O'Hare Intl Airport-Reykjavik Keflavik Intl Airport flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Chicago O'Hare Intl Airport-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 O'Hare Intl Airport-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 O'Hare Intl to Keflavik Intl

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

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

Use this chart to determine the optimal time to book a round-trip flight from O'Hare Intl to Keflavik Intl. Price data was last updated on December 5, 2025.

To ensure you get the cheapest price possible for a flight from Chicago O'Hare Intl Airport to Reykjavik Keflavik Intl Airport, you should look to book at least 47 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

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

Currently, September is the cheapest month in which you can book a flight from Chicago O'Hare Intl Airport to Reykjavik Keflavik Intl Airport (average of $313). Flying from Chicago O'Hare Intl Airport 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 ORD to KEF?

Find hourly flight availability from O'Hare Intl 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 December 12, 2025.

Unlike in the morning, when flights are generally more expensive, you can save up to 28% on flights from Chicago O'Hare Intl Airport to Reykjavik Keflavik Intl Airport by exploring options for tickets in the afternoon.

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 December 12, 2025.
Read through reviews of airlines operating flights from Chicago O'Hare Intl Airport to Reykjavik Keflavik Intl Airport, such as United Airlines and Icelandair. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
9,095 reviews

Entertainment

7.1

Food

6.6

Boarding

7.7

Comfort

7.3

Crew

8.1

Overall

7.4

Reviews

1 / 20
10.0
Excellent

Sunderesh,Dec 2025

AUS - EWR

Smooth flight from Austin to Newark. The crew was friendly.
United Airlines
7.4
Good
9,095 reviews
United Airlines
7.4
Good
9,095 reviews

Entertainment

7.1

Food

6.6

Boarding

7.7

Comfort

7.3

Crew

8.1

Overall

7.4

Reviews

1 / 20
10.0
Excellent

Sunderesh,Dec 2025

AUS - EWR

Smooth flight from Austin to Newark. The crew was friendly.
Icelandair
7.0
Good
589 reviews
United Airlines
7.4
Good
9,095 reviews

Entertainment

7.1

Food

6.6

Boarding

7.7

Comfort

7.3

Crew

8.1

Overall

7.4

Reviews

1 / 20
10.0
Excellent

Sunderesh,Dec 2025

AUS - EWR

Smooth flight from Austin to Newark. The crew was friendly.

Related info for your journey

Find useful and relevant information for your journey from O'Hare Intl 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 O'Hare Intl Airport to Reykjavik Keflavik Intl Airport?

    Airlines like Icelandair and Finnair fly from Chicago O'Hare Intl Airport to Reykjavik Keflavik Intl Airport in about 6h 15m. The time it takes to get you to your destination can typically vary by up to 7h 40m. There are 2934 mi between Chicago O'Hare Intl Airport and Reykjavik Keflavik Intl Airport. This flight may include one or multiple stops.

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

    Icelandair, at $359, was found to be the cheapest airline from Chicago O'Hare Intl Airport to Reykjavik Keflavik Intl Airport. An alternate airline flying to your destination would be United Airlines. You may be able to fly from Chicago O'Hare Intl Airport to Reykjavik Keflavik Intl Airport for 43% less than the average price by searching for these airlines.

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

    Looking for the cheapest flight from Chicago O'Hare Intl Airport to Reykjavik Keflavik Intl Airport? While on average our users pay $1,187, our data indicates the cheapest price to be $215. The most popular route (Chicago O'Hare Intl - Reykjavik Keflavik Intl), is priced around $365.

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

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

  • How can I find direct flights from O'Hare Intl to Keflavik Intl?

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

  • Can I find deals for business class flights from O'Hare Intl to Keflavik Intl?

    Yes. Cheapflights offers flight deals from O'Hare Intl 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 O'Hare Intl Airport to Reykjavik Keflavik Intl Airport?

    Currently, September is the cheapest month in which you can book a flight from Chicago O'Hare Intl Airport to Reykjavik Keflavik Intl Airport (average of $313). Flying from Chicago O'Hare Intl Airport 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 O'Hare Intl to Keflavik Intl

See prices for flight routes from nearby airports that may be better suited for you.
Midway to Keflavik Intl flights

Top 2 airlines flying from O'Hare Intl to Keflavik Intl

Discover the top 2 airlines that operate flights from O'Hare Intl 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 December 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest$360Average$638FlexibilityNo cancel feeOn-time76%
United AirlinesCheapest$612Average$704FlexibilityNo cancel feeOn-time69%

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