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Keflavik Intl

$203+ 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 8/21. Fares are subject to change and may not be available on all flights or dates of travel.
CHI — KEF
Jun 17 — Jun 241
Tue 6/17
Tue 6/24
1 adult, Economy
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Cheapflights Tip: The best prices from Chicago to Reykjavik Keflavik Intl are usually found in January or April, booked 71 days in advance, depart on a Thursday or Wednesday and return on a Saturday

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 June 12, 2025.

Round-trip from

$565
(KLM)

One-way from

$203
(Trip.com)

Popular in

June

Cheapest in

January

Average price

$738

Good round-trip deal

$544 or less

Good one-way deal

$258 or less
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. 8% potential increase in price ($58 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($8 potential savings vs. average RT price).
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Average for round-trip flights in June 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 June 12, 2025.

This British Airways deal was found by Cheapflights users on 6/9. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/289:45 pmORD - KEF
1 stop31h 10mBritish Airways
Tue 1/611:45 amKEF - ORD
1 stop32h 10mBritish Airways
Deal found 6/9$564
This KLM deal was found by Cheapflights users on 6/9. 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.
Mon 9/1510:35 amMDW - KEF
2 stops17h 55mKLM
Mon 9/228:45 amKEF - MDW
2 stops17h 59mKLM
Deal found 6/9$565
This Delta deal was found by Cheapflights users on 6/9. 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.
Fri 9/197:35 pmORD - KEF
1 stop29h 45mDelta
Mon 9/298:45 amKEF - ORD
2 stops15h 32mDelta
Deal found 6/9$565
This FlightHub deal was found by Cheapflights users on 6/9. 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.
Sat 10/187:25 pmORD - KEF
Nonstop6h 15mIcelandair
Sun 10/267:35 pmKEF - ORD
Nonstop6h 40mIcelandair
Deal found 6/9$566
This Cheapflightsfares deal was found by Cheapflights users on 6/10. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/173:50 pmORD - KEF
2 stops11h 20mAir Canada
Fri 7/259:30 amKEF - ORD
1 stop10h 25mAir Canada
Deal found 6/10$572
This Mytrip deal was found by Cheapflights users on 6/12. 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 9/311:19 amORD - KEF
2 stops29h 26mMultiple Airlines
Sun 9/78:10 pmKEF - ORD
2 stops23h 24mMultiple Airlines
Deal found 6/12$573
This Scandinavian Airlines deal was found by Cheapflights users on 6/9. 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 Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/197:15 pmORD - KEF
1 stop16h 05mScandinavian Airlines
Tue 10/2811:30 amKEF - ORD
1 stop35h 15mScandinavian Airlines
Deal found 6/9$584
This Virgin Atlantic deal was found by Cheapflights users on 6/9. 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 Virgin Atlantic is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/221:16 pmORD - KEF
2 stops15h 14mVirgin Atlantic
Mon 9/2911:25 amKEF - ORD
2 stops17h 28mVirgin Atlantic
Deal found 6/9$585
This Kiwi.com deal was found by Cheapflights users on 6/12. 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 7/145:30 pmORD - KEF
1 stop33h 45mWestJet
Tue 7/229:35 amKEF - ORD
1 stop12h 09mWestJet
Deal found 6/12$586
This United Airlines deal was found by Cheapflights users on 6/12. 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.
Wed 9/172:00 pmORD - KEF
1 stop13h 15mUnited Airlines
Sun 9/2112:00 pmKEF - ORD
Nonstop6h 55mUnited Airlines
Deal found 6/12$593
This KLM deal was found by Cheapflights users on 6/12. 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 7/81:09 pmMDW - KEF
1 stop12h 11mAir France
Mon 7/149:30 amKEF - MDW
1 stop13h 09mAir France
Deal found 6/12$618
This Delta deal was found by Cheapflights users on 6/11. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/71:09 pmMDW - KEF
1 stop12h 11mDelta
Mon 7/149:30 amKEF - MDW
1 stop13h 09mDelta
Deal found 6/11$619

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 June 12, 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

MDW - KEF

MDWKEF

Chicago Midway

Mon 9/15

10:35 am-9:30 am

2 stops17h 55m

Reykjavik Keflavik Intl

Mon 9/22

8:45 am-9:44 pm

2 stops17h 59m

$565

ChicagoReykjavik

ORD - KEF

ORDKEF

Chicago O'Hare Intl

Fri 9/19

7:35 pm-6:20 am

1 stop29h 45m

Reykjavik Keflavik Intl

Mon 9/29

8:45 am-7:17 pm

2 stops15h 32m

$565

ChicagoReykjavik

ORD - KEF

ORDKEF

Chicago O'Hare Intl

Sat 10/18

7:25 pm-6:40 am

Nonstop6h 15m

Reykjavik Keflavik Intl

Sun 10/26

7:35 pm-9:15 pm

Nonstop6h 40m

$566

ChicagoReykjavik

ORD - KEF

ORDKEF

Chicago O'Hare Intl

Thu 7/17

3:50 pm-8:10 am

2 stops11h 20m

Reykjavik Keflavik Intl

Fri 7/25

9:30 am-2:55 pm

1 stop10h 25m

$572

ChicagoReykjavik

ORD - KEF

ORDKEF

Chicago O'Hare Intl

Wed 9/3

11:19 am-9:45 pm

2 stops29h 26m

Reykjavik Keflavik Intl

Sun 9/7

8:10 pm-2:34 pm

2 stops23h 24m

$573

ChicagoReykjavik

ORD - KEF

ORDKEF

Chicago O'Hare Intl

Mon 8/11

5:30 pm-8:15 am

1 stop33h 45m

Reykjavik Keflavik Intl

Fri 8/29

9:35 am-4:44 pm

1 stop12h 09m

$583

ChicagoReykjavik

ORD - KEF

ORDKEF

Chicago O'Hare Intl

Sun 10/19

7:15 pm-4:20 pm

1 stop16h 05m

Reykjavik Keflavik Intl

Tue 10/28

11:30 am-5:45 pm

1 stop35h 15m

$584

ChicagoReykjavik

ORD - KEF

ORDKEF

Chicago O'Hare Intl

Mon 9/22

1:16 pm-9:30 am

2 stops15h 14m

Reykjavik Keflavik Intl

Mon 9/29

11:25 am-11:53 pm

2 stops17h 28m

$585

ChicagoReykjavik

ORD - KEF

ORDKEF

Chicago O'Hare Intl

Wed 9/17

2:00 pm-8:15 am

1 stop13h 15m

Reykjavik Keflavik Intl

Sun 9/21

12:00 pm-1:55 pm

Nonstop6h 55m

$593

ChicagoReykjavik

ORD - KEF

ORDKEF

Chicago O'Hare Intl

Tue 11/11

8:05 am-10:50 am

2 stops20h 45m

Reykjavik Keflavik Intl

Sat 11/15

11:50 am-5:00 pm

1 stop35h 10m

$599

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/11

Showing 1-10 of 33 results
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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 June 9, 2025.

The best time to book flights from Chicago to Reykjavik Keflavik Intl Airport is 55 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 June is currently the most expensive (average of $659). 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 June 12, 2025.

Unlike in the afternoon, when flights are generally more expensive, you can save up to 20% 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 June 12, 2025.

The most flights from CHI to KEF are scheduled on a Monday (7 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (6 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 June 12, 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
7,950 reviews

Entertainment

7.9

Boarding

8.2

Comfort

7.9

Food

7.3

Overall

8.0

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Delta
8.0
Very good
7,950 reviews
Delta
8.0
Very good
7,950 reviews

Entertainment

7.9

Boarding

8.2

Comfort

7.9

Food

7.3

Overall

8.0

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Alaska Airlines
8.0
Very good
10,000 reviews
Delta
8.0
Very good
7,950 reviews

Entertainment

7.9

Boarding

8.2

Comfort

7.9

Food

7.3

Overall

8.0

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
KLM
7.8
Good
1,358 reviews
Delta
8.0
Very good
7,950 reviews

Entertainment

7.9

Boarding

8.2

Comfort

7.9

Food

7.3

Overall

8.0

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Finnair
7.6
Good
1,290 reviews
Delta
8.0
Very good
7,950 reviews

Entertainment

7.9

Boarding

8.2

Comfort

7.9

Food

7.3

Overall

8.0

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Air France
7.5
Good
1,463 reviews
Delta
8.0
Very good
7,950 reviews

Entertainment

7.9

Boarding

8.2

Comfort

7.9

Food

7.3

Overall

8.0

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

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?

    KLM, at $565, was found to be the cheapest airline from Chicago to Reykjavik Keflavik Intl Airport.Alternate airlines to your destination round-trip include Icelandair and Air Canada. Users have found that KLM is 14% 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 WestJet, with whom users have recently found tickets for as low as $290. However, be on the lookout for offers from Icelandair and Air Canada, as they are both options that can get you from Chicago to Reykjavik Keflavik Intl Airport for a low price.

  • 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 (77%), Air Canada (31%) and Austrian Airlines (31%).

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

    Looking at all options, your cheapest flight can be booked for $199. While the most popular route (Chicago O'Hare Intl - Reykjavik Keflavik Intl) can be booked for $472 on average our data indicates $1,521 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 June is currently the most expensive (average of $659). 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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Keflavik

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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
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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 June 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest$513Average$669FlexibilityNo cancel feeOn-time76%
Air CanadaCheapest$532Average$554FlexibilityNo cancel feeOn-time67%
United AirlinesCheapest$612Average$720FlexibilityNo cancel feeOn-time69%

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