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$295+ Cheap flights from Keflavik Intl (KEF) to Chicago (CHI)

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 8/20. Fares are subject to change and may not be available on all flights or dates of travel.
KEF — CHI
May 4 — May 111
Sun 5/4
Sun 5/11
1 adult, Economy
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Cheap flight deals from Keflavik Intl to Chicago

Discover tips and strategies to find the most affordable flight options for your journey from Keflavik Intl (KEF) to Chicago (CHI). 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 April 29, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
2 stars

Round-trip from

$519
(Ticket)

One-way from

$295
(Kiwi.com)

Good round-trip deal

$519 or less

Good one-way deal

$418 or less
Provider with most accurate pricing for Reykjavik Keflavik Intl-Chicago (CHI) flight deals.
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Provider most trusted by Cheapflights users for Reykjavik Keflavik Intl-Chicago (CHI) flights.
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From Reykjavik Keflavik Intl to Chicago (CHI)
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One-way flight from Reykjavik Keflavik Intl to Chicago (CHI)
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Price to beat on a round-trip flight from Reykjavik Keflavik Intl to Chicago (CHI).
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Price to beat on a one-way flight from Reykjavik Keflavik Intl to Chicago (CHI).
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Find flight deals from Keflavik Intl to Chicago

Cheapest flights from Keflavik Intl to Chicago
Explore the most affordable flight options available from Keflavik Intl to Chicago. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 29, 2025.

This Ticket deal was found by Cheapflights users on 4/29. 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 Ticket is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/164:25 pmKEF - ORD
Nonstop6h 50mIcelandair
Wed 6/2510:15 pmORD - KEF
Nonstop6h 05mIcelandair
Deal found 4/29$519
This Ticket deal was found by Cheapflights users on 4/29. 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 Ticket is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/169:50 amKEF - ORD
1 stop28h 20mAir Canada
Wed 6/258:40 amORD - KEF
1 stop18h 30mAir Canada
Deal found 4/29$673
This Mytrip deal was found by Cheapflights users on 4/29. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/169:35 amKEF - ORD
2 stops35h 15mMultiple Airlines
Wed 6/255:51 amORD - KEF
1 stop17h 59mMultiple Airlines
Deal found 4/29$682
This United Airlines deal was found by Cheapflights users on 4/29. 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.
Mon 6/1612:00 pmKEF - ORD
Nonstop6h 50mUnited Airlines
Wed 6/252:07 pmORD - KEF
1 stop13h 03mUnited Airlines
Deal found 4/29$738
This Delta deal was found by Cheapflights users on 4/29. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/239:30 amKEF - ORD
1 stop16h 51mDelta
Fri 5/3011:03 amORD - KEF
1 stop14h 57mDelta
Deal found 4/29$779
This Virgin Atlantic deal was found by Cheapflights users on 4/29. 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 Virgin Atlantic is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/2611:25 amKEF - ORD
2 stops14h 09mVirgin Atlantic
Wed 9/31:16 pmORD - KEF
2 stops15h 14mVirgin Atlantic
Deal found 4/29$787
This KAYAK deal was found by Cheapflights users on 4/29. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/221:15 amKEF - ORD
1 stop17h 45mLufthansa
Fri 5/309:10 pmORD - KEF
Nonstop6h 20mLufthansa
Deal found 4/29$797
This Gurufare deal was found by Cheapflights users on 4/29. 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 Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/1212:10 amKEF - ORD
1 stop18h 10mAustrian Airlines
Fri 6/209:10 pmORD - KEF
Nonstop6h 20mAustrian Airlines
Deal found 4/29$827
This lastminute.com deal was found by Cheapflights users on 4/28. 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 lastminute.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/99:30 amKEF - MDW
1 stop13h 10mAir France
Wed 6/186:20 pmMDW - KEF
1 stop31h 00mAir France
Deal found 4/28$837
This Delta deal was found by Cheapflights users on 4/29. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/168:50 amKEF - MDW
1 stop14h 51mDelta
Wed 6/251:09 pmMDW - KEF
2 stops15h 21mDelta
Deal found 4/29$844
This British Airways deal was found by Cheapflights users on 4/29. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/1610:45 amKEF - ORD
2 stops27h 31mBritish Airways
Wed 6/258:25 pmORD - KEF
2 stops32h 15mBritish Airways
Deal found 4/29$907
This American Airlines deal was found by Cheapflights users on 4/29. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/2310:30 amKEF - ORD
2 stops24h 23mAmerican Airlines
Fri 5/307:02 amORD - KEF
2 stops21h 08mAmerican Airlines
Deal found 4/29$991

Cheapflights Fare Finder

Customize your flight search to find flights from Keflavik Intl to Chicago 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 April 29, 2025.
Use the filters below to find and compare flights from Reykjavik Keflavik Intl Airport to Chicago that are best for you.

Fly from

Keflavik Intl

Fly to

Chicago

Route

Depart

Return

Price

ReykjavikChicago

KEF - ORD

KEFORD

Reykjavik Keflavik Intl

Mon 6/16

4:25 pm-6:15 pm

Nonstop6h 50m

Chicago O'Hare Intl

Wed 6/25

10:15 pm-9:20 am

Nonstop6h 05m

$519

ReykjavikChicago

KEF - ORD

KEFORD

Reykjavik Keflavik Intl

Mon 6/16

9:50 am-9:10 am

1 stop28h 20m

Chicago O'Hare Intl

Wed 6/25

8:40 am-8:10 am

1 stop18h 30m

$673

ReykjavikChicago

KEF - ORD

KEFORD

Reykjavik Keflavik Intl

Mon 6/16

9:35 am-3:50 pm

2 stops35h 15m

Chicago O'Hare Intl

Wed 6/25

5:51 am-4:50 am

1 stop17h 59m

$682

ReykjavikChicago

KEF - ORD

KEFORD

Reykjavik Keflavik Intl

Mon 6/16

12:00 pm-1:50 pm

Nonstop6h 50m

Chicago O'Hare Intl

Wed 6/25

9:10 pm-8:30 am

Nonstop6h 20m

$738

ReykjavikChicago

KEF - ORD

KEFORD

Reykjavik Keflavik Intl

Fri 5/23

9:30 am-9:21 pm

1 stop16h 51m

Chicago O'Hare Intl

Fri 5/30

11:03 am-7:00 am

1 stop14h 57m

$779

ReykjavikChicago

KEF - ORD

KEFORD

Reykjavik Keflavik Intl

Tue 8/26

11:25 am-8:34 pm

2 stops14h 09m

Chicago O'Hare Intl

Wed 9/3

1:16 pm-9:30 am

2 stops15h 14m

$787

ReykjavikChicago

KEF - ORD

KEFORD

Reykjavik Keflavik Intl

Thu 5/22

1:15 am-2:00 pm

1 stop17h 45m

Chicago O'Hare Intl

Fri 5/30

9:10 pm-8:30 am

Nonstop6h 20m

$797

ReykjavikChicago

KEF - ORD

KEFORD

Reykjavik Keflavik Intl

Thu 6/12

12:10 am-1:20 pm

1 stop18h 10m

Chicago O'Hare Intl

Fri 6/20

9:10 pm-8:30 am

Nonstop6h 20m

$827

ReykjavikChicago

KEF - MDW

KEFMDW

Reykjavik Keflavik Intl

Mon 6/9

9:30 am-5:40 pm

1 stop13h 10m

Chicago Midway

Wed 6/18

6:20 pm-6:20 am

1 stop31h 00m

$837

ReykjavikChicago

KEF - MDW

KEFMDW

Reykjavik Keflavik Intl

Mon 6/16

8:50 am-6:41 pm

1 stop14h 51m

Chicago Midway

Wed 6/25

1:09 pm-9:30 am

2 stops15h 21m

$844

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/28

Showing 1-10 of 35 results
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Compare providers for flights from Keflavik Intl to Chicago

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 Keflavik Intl to Chicago in April.
ProviderPrice AccuracyTrust Score*
FlightHubPrice Accuracy3 starsTrust Score*2 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 Reykjavik Keflavik Intl Airport-Chicago flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Reykjavik Keflavik Intl Airport-Chicago flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Reykjavik Keflavik Intl Airport-Chicago flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Reykjavik Keflavik Intl Airport-Chicago 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 Reykjavik Keflavik Intl Airport-Chicago 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 Keflavik Intl to Chicago

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

What is the cheapest time of day to fly from KEF to CHI?

Find hourly flight availability from Keflavik Intl to Chicago. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated April 29, 2025.

A simple way to save on the total cost of your ticket is to fly from Reykjavik Keflavik Intl Airport to Chicago at noon. If you’re flexible enough to do this you can expect to save up to 36% on your trip compared to booking a flight in the morning.

Rainfall in Chicago by month

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

In terms of precipitation, rainfall in Chicago ranges from 1.7 - 4.9 inches per month. August is typically the wettest month, when rainfall can reach 4.9 in. January is typically the driest time to visit Chicago when rainfall is around 1.7 in.

Temperature in Chicago by month

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

If weather is an important factor for your trip to Chicago, 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 73.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 23.0 F).

Reviews of airlines servicing Chicago

Get insights into the airlines that provide service to Chicago. 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 Chicago. Reviews last updated April 29, 2025.
Delta
8.0
Very good
7,929 reviews

Food

7.3

Boarding

8.2

Comfort

7.9

Overall

8.0

Crew

8.5

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
Delta
8.0
Very good
7,929 reviews
Delta
8.0
Very good
7,929 reviews

Food

7.3

Boarding

8.2

Comfort

7.9

Overall

8.0

Crew

8.5

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
KLM
7.8
Good
1,334 reviews
Delta
8.0
Very good
7,929 reviews

Food

7.3

Boarding

8.2

Comfort

7.9

Overall

8.0

Crew

8.5

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
LOT
7.6
Good
1,069 reviews
Delta
8.0
Very good
7,929 reviews

Food

7.3

Boarding

8.2

Comfort

7.9

Overall

8.0

Crew

8.5

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
Finnair
7.6
Good
1,275 reviews
Delta
8.0
Very good
7,929 reviews

Food

7.3

Boarding

8.2

Comfort

7.9

Overall

8.0

Crew

8.5

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
Austrian Airlines
7.6
Good
780 reviews
Delta
8.0
Very good
7,929 reviews

Food

7.3

Boarding

8.2

Comfort

7.9

Overall

8.0

Crew

8.5

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Related info for your journey

Find useful and relevant information for your journey from Keflavik Intl to Chicago. 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 Reykjavik Keflavik Intl Airport to Chicago round-trip?

    Currently priced at $519, Icelandair will fly you from Reykjavik Keflavik Intl Airport to Chicago and back. In addition to Icelandair, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from Air Canada and United Airlines - these airlines can fly you to your destination from $673 and $738, respectively.

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

    The cheapest airlines for a one-way flight from Reykjavik Keflavik Intl Airport to Chicago are WestJet ($295), Icelandair ($437), and Finnair ($656).

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

    Looking at all options, your cheapest flight can be booked for $358. While the most popular route (Reykjavik Keflavik Intl - Chicago O'Hare Intl) can be booked for $559 on average our data indicates $1,565 when flying from Reykjavik Keflavik Intl Airport to Chicago.

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

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

  • How can I find direct flights from Keflavik Intl to Chicago?

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

  • Can I find deals for business class flights from Keflavik Intl to Chicago?

    Yes. Cheapflights offers flight deals from Keflavik Intl to Chicago 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 Reykjavik Keflavik Intl Airport to Chicago?

    Currently, August is the cheapest month in which you can book a flight from Reykjavik Keflavik Intl Airport to Chicago (average of $245). Flying from Reykjavik Keflavik Intl Airport to Chicago in March is currently the most expensive (average of $321). 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
Merrillville
Hammond
Benton Harbor
Porter
Lansing
Valparaiso
Chesterton

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Keflavik Intl to Chicago

See prices for flight routes from nearby airports that may be better suited for you.
Keflavik Intl to O'Hare Intl flights
Keflavik Intl to St. Louis flights

Top airline flying from Keflavik Intl to Chicago

Discover the top airline that operate flights from Keflavik Intl to Chicago. 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 April 29, 2025.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest$483Average$664FlexibilityNo cancel feeOn-time76%

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