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Keflavik Intl

$217+ 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 5/6. Fares are subject to change and may not be available on all flights or dates of travel.
CHI — KEF
Apr 5 — Apr 121
Sat 4/5
Sat 4/12
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 71 days in advance, depart on a Thursday or Tuesday and return on a Thursday

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 March 31, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$528
(FlightHub)

One-way from

$217
(Mytrip)

Popular in

June

Cheapest in

January

Average price

$691

Good round-trip deal

$591 or less

Good one-way deal

$285 or less
Provider with most accurate pricing for Chicago (CHI)-Reykjavik Keflavik Intl flight deals.
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Provider most trusted by Cheapflights users for Chicago (CHI)-Reykjavik Keflavik Intl flights.
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From Chicago (CHI) to Reykjavik Keflavik Intl
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One-way flight from Chicago (CHI) to Reykjavik Keflavik Intl
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Highest demand for flights based on searches. 6% potential increase in price ($43 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($7 potential savings vs. average RT price).
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Average for round-trip flights in March 2025
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Price to beat on a round-trip flight from Chicago (CHI) to Reykjavik Keflavik Intl.
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Price to beat on a one-way flight from Chicago (CHI) to Reykjavik Keflavik Intl.
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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 March 31, 2025.

This FlightHub deal was found by Cheapflights users on 3/30. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/2510:15 pmORD - KEF
Nonstop6h 05mIcelandair
Thu 5/14:25 pmKEF - ORD
Nonstop6h 50mIcelandair
Deal found 3/30$528
This oojo deal was found by Cheapflights users on 3/30. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/297:15 pmORD - KEF
1 stop16h 05mScandinavian Airlines
Mon 10/611:05 amKEF - ORD
2 stops34h 05mScandinavian Airlines
Deal found 3/30$530
This Mytrip deal was found by Cheapflights users on 3/31. 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 5/127:35 pmORD - KEF
2 stops28h 15mMultiple Airlines
Tue 5/209:35 amKEF - ORD
3 stops30h 57mMultiple Airlines
Deal found 3/31$531
This Kiwi.com deal was found by Cheapflights users on 3/30. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/211:03 pmMDW - KEF
1 stop10h 52mMultiple Airlines
Wed 4/303:05 pmKEF - MDW
1 stop28h 40mMultiple Airlines
Deal found 3/30$583
This Finnair deal was found by Cheapflights users on 3/31. 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 Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/229:30 pmORD - KEF
1 stop29h 30mFinnair
Sun 4/275:15 pmKEF - ORD
1 stop29h 35mFinnair
Deal found 3/31$585
This KLM deal was found by Cheapflights users on 3/31. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/612:48 pmMDW - KEF
2 stops15h 42mKLM
Tue 5/138:50 amKEF - MDW
2 stops17h 38mKLM
Deal found 3/31$586
This KLM deal was found by Cheapflights users on 3/31. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/611:15 amORD - KEF
2 stops17h 15mKLM
Tue 5/138:50 amKEF - ORD
1 stop12h 40mKLM
Deal found 3/31$586
This United Airlines deal was found by Cheapflights users on 3/29. 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.
Thu 8/213:35 pmORD - KEF
1 stop11h 35mUnited Airlines
Tue 8/2612:00 pmKEF - ORD
Nonstop6h 50mUnited Airlines
Deal found 3/29$594
This Delta deal was found by Cheapflights users on 3/30. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/29:20 amMDW - KEF
2 stops16h 00mDelta
Sun 10/128:50 amKEF - MDW
1 stop14h 46mDelta
Deal found 3/30$601
This Air Canada deal was found by Cheapflights users on 3/30. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/194:00 pmORD - KEF
1 stop11h 35mAir Canada
Mon 9/2910:00 amKEF - ORD
2 stops38h 48mAir Canada
Deal found 3/30$607
This Delta deal was found by Cheapflights users on 3/31. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/2810:37 amORD - KEF
1 stop17h 53mDelta
Mon 5/511:25 amKEF - ORD
1 stop11h 30mDelta
Deal found 3/31$609
This American Airlines deal was found by Cheapflights users on 3/30. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/258:20 pmORD - KEF
1 stop32h 10mAmerican Airlines
Fri 5/210:30 amKEF - ORD
2 stops26h 14mAmerican Airlines
Deal found 3/30$632

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 31, 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

Fri 4/25

10:15 pm-9:20 am

Nonstop6h 05m

Reykjavik Keflavik Intl

Thu 5/1

4:25 pm-6:15 pm

Nonstop6h 50m

$528

ChicagoReykjavik

ORD - KEF

ORDKEF

Chicago O'Hare Intl

Mon 5/12

7:35 pm-4:50 am

2 stops28h 15m

Reykjavik Keflavik Intl

Tue 5/20

9:35 am-11:32 am

3 stops30h 57m

$531

ChicagoReykjavik

ORD - KEF

ORDKEF

Chicago O'Hare Intl

Sun 4/13

7:15 pm-3:10 pm

1 stop14h 55m

Reykjavik Keflavik Intl

Sun 4/20

5:35 pm-4:10 pm

1 stop27h 35m

$553

ChicagoReykjavik

MDW - KEF

MDWKEF

Chicago Midway

Mon 4/21

1:03 pm-4:55 am

1 stop10h 52m

Reykjavik Keflavik Intl

Wed 4/30

3:05 pm-2:45 pm

1 stop28h 40m

$583

ChicagoReykjavik

ORD - KEF

ORDKEF

Chicago O'Hare Intl

Tue 4/22

9:30 pm-8:00 am

1 stop29h 30m

Reykjavik Keflavik Intl

Sun 4/27

5:15 pm-5:50 pm

1 stop29h 35m

$585

ChicagoReykjavik

MDW - KEF

MDWKEF

Chicago Midway

Tue 5/6

12:48 pm-9:30 am

2 stops15h 42m

Reykjavik Keflavik Intl

Tue 5/13

8:50 am-9:28 pm

2 stops17h 38m

$586

ChicagoReykjavik

ORD - KEF

ORDKEF

Chicago O'Hare Intl

Tue 5/6

11:15 am-9:30 am

2 stops17h 15m

Reykjavik Keflavik Intl

Tue 5/13

8:50 am-4:30 pm

1 stop12h 40m

$586

ChicagoReykjavik

ORD - KEF

ORDKEF

Chicago O'Hare Intl

Mon 4/28

10:37 am-9:30 am

1 stop17h 53m

Reykjavik Keflavik Intl

Mon 5/5

11:25 am-5:55 pm

1 stop11h 30m

$609

ChicagoReykjavik

MDW - KEF

MDWKEF

Chicago Midway

Mon 5/12

12:48 pm-6:20 am

2 stops12h 32m

Reykjavik Keflavik Intl

Mon 5/19

8:50 am-9:28 pm

2 stops17h 38m

$613

ChicagoReykjavik

ORD - KEF

ORDKEF

Chicago O'Hare Intl

Fri 4/25

8:20 pm-9:30 am

1 stop32h 10m

Reykjavik Keflavik Intl

Fri 5/2

10:30 am-7:44 am

2 stops26h 14m

$632

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/29

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 March.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice Accuracy3 starsTrust Score*1 star
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 March 28, 2025.

The best time to book flights from Chicago to Reykjavik Keflavik Intl Airport is 71 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, November is the cheapest month in which you can book a flight from Chicago to Reykjavik Keflavik Intl Airport (average of $328). Flying from Chicago to Reykjavik Keflavik Intl Airport in July is currently the most expensive (average of $651). 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 31, 2025.

Unlike in the afternoon, when flights are generally more expensive, you can save up to 21% on flights from Chicago to Reykjavik Keflavik Intl Airport by exploring options for tickets at noon.

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 31, 2025.

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

Rainfall in Keflavik Intl by month

Plan your trip to Keflavik Intl by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Reykjavik Keflavik Intl Airport ranges from 1.6 - 3.1 inches per month. January is typically the wettest month, when rainfall can reach 3.1 in. May is typically the driest time to visit Reykjavik Keflavik Intl Airport when rainfall is around 1.6 in.

Temperature in Keflavik Intl by month

Plan your trip to Keflavik Intl by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Reykjavik Keflavik Intl Airport, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 51.8 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 32.0 F).

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 31, 2025.
See what other customers who have flown with Delta, Alaska Airlines and KLM from Chicago to Reykjavik have to say. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,899 reviews

Overall

8.0

Food

7.3

Crew

8.5

Entertainment

7.9

Comfort

8.0

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Delta
8.0
Very good
7,899 reviews
Delta
8.0
Very good
7,899 reviews

Overall

8.0

Food

7.3

Crew

8.5

Entertainment

7.9

Comfort

8.0

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Alaska Airlines
8.0
Very good
9,818 reviews
Delta
8.0
Very good
7,899 reviews

Overall

8.0

Food

7.3

Crew

8.5

Entertainment

7.9

Comfort

8.0

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
KLM
7.8
Good
1,321 reviews
Delta
8.0
Very good
7,899 reviews

Overall

8.0

Food

7.3

Crew

8.5

Entertainment

7.9

Comfort

8.0

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Finnair
7.6
Good
1,267 reviews
Delta
8.0
Very good
7,899 reviews

Overall

8.0

Food

7.3

Crew

8.5

Entertainment

7.9

Comfort

8.0

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
SWISS
7.5
Good
1,570 reviews
Delta
8.0
Very good
7,899 reviews

Overall

8.0

Food

7.3

Crew

8.5

Entertainment

7.9

Comfort

8.0

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

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.

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

    Icelandair, at $528, was found to be the cheapest airline from Chicago to Reykjavik Keflavik Intl Airport.Alternate airlines to your destination round-trip include Scandinavian Airlines and Finnair. Users have found that Icelandair is 20% cheaper than the other options available to this destination.

  • What are the cheapest airlines to fly from Chicago to Reykjavik Keflavik Intl Airport one-way?

    The cheapest airline one-way is Icelandair, with whom users have recently found tickets for as low as $390. However, be on the lookout for offers from WestJet and American Airlines, as they are both options that can get you from Chicago to Reykjavik Keflavik Intl Airport for a low price.

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

    Looking at all options, your cheapest flight can be booked for $226. While the most popular route (Chicago O'Hare Intl - Reykjavik Keflavik Intl) can be booked for $415 on average our data indicates $1,354 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, November is the cheapest month in which you can book a flight from Chicago to Reykjavik Keflavik Intl Airport (average of $328). Flying from Chicago to Reykjavik Keflavik Intl Airport in July is currently the most expensive (average of $651). 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

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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
Moline to Keflavik Intl flights
Peoria to Keflavik Intl flights

Top 3 airlines flying from Chicago to Keflavik Intl

Discover the top 3 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 31, 2025.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest$527Average$676FlexibilityNo cancel feeOn-time76%
Air CanadaCheapest$532Average$584FlexibilityNo cancel feeOn-time67%
United AirlinesCheapest$572Average$699FlexibilityNo cancel feeOn-time69%
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