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$282+ 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 9/6. Fares are subject to change and may not be available on all flights or dates of travel.
KEF — CHI
Aug 3 — Aug 101
Sun 8/3
Sun 8/10
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 July 29, 2025.

Round-trip from

$437
(Kiwi.com)

One-way from

$282
(Kiwi.com)

Good round-trip deal

$834 or less

Good one-way deal

$470 or less
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 July 29, 2025.

This Kiwi.com deal was found by Cheapflights users on 7/28. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/153:05 pmKEF - ORD
1 stop25h 05mMultiple Airlines
Fri 10/246:10 amORD - KEF
1 stop17h 45mMultiple Airlines
Deal found 7/28$437
This Kiwi.com deal was found by Cheapflights users on 7/28. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/153:05 pmKEF - MDW
1 stop29h 28mMultiple Airlines
Fri 10/241:59 pmMDW - KEF
1 stop9h 56mMultiple Airlines
Deal found 7/28$549
This flugladen.de deal was found by Cheapflights users on 7/27. 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 flugladen.de is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/204:25 pmKEF - ORD
Nonstop6h 50mIcelandair
Fri 9/2610:15 pmORD - KEF
Nonstop6h 05mIcelandair
Deal found 7/27$565
This Scandinavian Airlines deal was found by Cheapflights users on 7/28. 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 Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/255:10 pmKEF - ORD
2 stops35h 45mScandinavian Airlines
Sat 11/87:20 pmORD - KEF
2 stops34h 55mScandinavian Airlines
Deal found 7/28$625
This Delta deal was found by Cheapflights users on 7/27. 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.
Wed 8/209:30 amKEF - MDW
1 stop13h 07mDelta
Mon 8/251:08 pmMDW - KEF
1 stop12h 12mDelta
Deal found 7/27$811
This Expedia deal was found by Cheapflights users on 7/28. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/138:50 amKEF - MDW
1 stop14h 47mAir France
Sun 8/179:31 amMDW - KEF
1 stop15h 49mAir France
Deal found 7/28$989

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 July 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

Wed 10/15

3:05 pm-11:10 am

1 stop25h 05m

Chicago O'Hare Intl

Fri 10/24

6:10 am-4:55 am

1 stop17h 45m

$437

ReykjavikChicago

KEF - MDW

KEFMDW

Reykjavik Keflavik Intl

Wed 10/15

3:05 pm-3:33 pm

1 stop29h 28m

Chicago Midway

Fri 10/24

1:59 pm-4:55 am

1 stop9h 56m

$549

ReykjavikChicago

KEF - ORD

KEFORD

Reykjavik Keflavik Intl

Sat 9/20

4:25 pm-6:15 pm

Nonstop6h 50m

Chicago O'Hare Intl

Fri 9/26

10:15 pm-9:20 am

Nonstop6h 05m

$565

ReykjavikChicago

KEF - ORD

KEFORD

Reykjavik Keflavik Intl

Thu 9/25

5:10 pm-11:55 pm

2 stops35h 45m

Chicago O'Hare Intl

Sat 11/8

7:20 pm-12:15 pm

2 stops34h 55m

$625

ReykjavikChicago

KEF - ORD

KEFORD

Reykjavik Keflavik Intl

Sat 9/20

9:50 am-3:04 pm

1 stop10h 14m

Chicago O'Hare Intl

Fri 9/26

3:50 pm-8:15 am

1 stop11h 25m

$733

ReykjavikChicago

KEF - MDW

KEFMDW

Reykjavik Keflavik Intl

Wed 8/20

9:30 am-5:37 pm

1 stop13h 07m

Chicago Midway

Mon 8/25

1:08 pm-6:20 am

1 stop12h 12m

$811

ReykjavikChicago

KEF - MDW

KEFMDW

Reykjavik Keflavik Intl

Wed 8/13

8:50 am-6:37 pm

1 stop14h 47m

Chicago Midway

Sun 8/17

9:31 am-6:20 am

1 stop15h 49m

$989

ReykjavikChicago

KEF - ORD

KEFORD

Reykjavik Keflavik Intl

Sat 9/6

3:05 pm-11:10 am

1 stop25h 05m

$282

ReykjavikChicago

KEF - ORD

KEFORD

Reykjavik Keflavik Intl

Tue 9/16

9:35 am-4:43 pm

1 stop12h 08m

$299

ReykjavikChicago

KEF - MDW

KEFMDW

Reykjavik Keflavik Intl

Thu 9/25

3:05 pm-6:43 pm

1 stop32h 38m

$324

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/26

Showing 1-10 of 14 results
1
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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 July 29, 2025.

A simple way to save on the total cost of your ticket is to fly from Reykjavik Keflavik Intl Airport to Chicago in the afternoon. If you’re flexible enough to do this you can expect to save up to 38% on your trip compared to booking a flight in the morning.

Weekly flight availability from Reykjavik Keflavik Intl Airport to Chicago

Explore weekly flight availability from Keflavik Intl to Chicago. 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 July 29, 2025.

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

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 July 29, 2025.
Read reviews from past customers who have flown Delta, Finnair, and Air France from Reykjavik Keflavik Intl Airport to Chicago. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,977 reviews

Boarding

8.2

Overall

8.0

Entertainment

7.9

Comfort

7.9

Crew

8.5

Food

7.3

Reviews

1 / 20
8.0
Excellent

Michael,Jul 2025

AMS - ATL

Overall it was great experience, with the exception of snack food. The food offered in two main meals was just fine but for the mid-flight snack, the only option was a large cookie, too sweet and high sugar content. Snacks at the back of the plane were also mainly sweets. There was one nice baked cheddar option but it quickly ran out.
Delta
8.0
Very good
7,977 reviews
Delta
8.0
Very good
7,977 reviews

Boarding

8.2

Overall

8.0

Entertainment

7.9

Comfort

7.9

Crew

8.5

Food

7.3

Reviews

1 / 20
8.0
Excellent

Michael,Jul 2025

AMS - ATL

Overall it was great experience, with the exception of snack food. The food offered in two main meals was just fine but for the mid-flight snack, the only option was a large cookie, too sweet and high sugar content. Snacks at the back of the plane were also mainly sweets. There was one nice baked cheddar option but it quickly ran out.
Finnair
7.6
Good
1,316 reviews
Delta
8.0
Very good
7,977 reviews

Boarding

8.2

Overall

8.0

Entertainment

7.9

Comfort

7.9

Crew

8.5

Food

7.3

Reviews

1 / 20
8.0
Excellent

Michael,Jul 2025

AMS - ATL

Overall it was great experience, with the exception of snack food. The food offered in two main meals was just fine but for the mid-flight snack, the only option was a large cookie, too sweet and high sugar content. Snacks at the back of the plane were also mainly sweets. There was one nice baked cheddar option but it quickly ran out.
Air France
7.5
Good
1,465 reviews
Delta
8.0
Very good
7,977 reviews

Boarding

8.2

Overall

8.0

Entertainment

7.9

Comfort

7.9

Crew

8.5

Food

7.3

Reviews

1 / 20
8.0
Excellent

Michael,Jul 2025

AMS - ATL

Overall it was great experience, with the exception of snack food. The food offered in two main meals was just fine but for the mid-flight snack, the only option was a large cookie, too sweet and high sugar content. Snacks at the back of the plane were also mainly sweets. There was one nice baked cheddar option but it quickly ran out.
Scandinavian Airlines
7.3
Good
1,449 reviews
Delta
8.0
Very good
7,977 reviews

Boarding

8.2

Overall

8.0

Entertainment

7.9

Comfort

7.9

Crew

8.5

Food

7.3

Reviews

1 / 20
8.0
Excellent

Michael,Jul 2025

AMS - ATL

Overall it was great experience, with the exception of snack food. The food offered in two main meals was just fine but for the mid-flight snack, the only option was a large cookie, too sweet and high sugar content. Snacks at the back of the plane were also mainly sweets. There was one nice baked cheddar option but it quickly ran out.
American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very good
7,977 reviews

Boarding

8.2

Overall

8.0

Entertainment

7.9

Comfort

7.9

Crew

8.5

Food

7.3

Reviews

1 / 20
8.0
Excellent

Michael,Jul 2025

AMS - ATL

Overall it was great experience, with the exception of snack food. The food offered in two main meals was just fine but for the mid-flight snack, the only option was a large cookie, too sweet and high sugar content. Snacks at the back of the plane were also mainly sweets. There was one nice baked cheddar option but it quickly ran out.

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 $565, 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 Scandinavian Airlines and Air Canada - these airlines can fly you to your destination from $625 and $733, 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 ($299), Icelandair ($470), and Finnair ($688).

  • What are the most reliable airlines from Reykjavik Keflavik Intl Airport to Chicago?

    Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from Reykjavik Keflavik Intl Airport to Chicago on time: Air Canada (86%), Austrian Airlines (86%), Brussels Airlines (86%).

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

    Looking at all options, your cheapest flight can be booked for $454. While the most popular route (Reykjavik Keflavik Intl - Chicago O'Hare Intl) can be booked for $437 on average our data indicates $677 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

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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 July 29, 2025.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest$483Average$548FlexibilityNo cancel feeOn-time76%

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