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$286+ Cheap flights from Keflavik Intl (KEF) to Illinois

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 9/9. Fares are subject to change and may not be available on all flights or dates of travel.
KEF — ORD
Aug 4 — Aug 111
Mon 8/4
Mon 8/11
1 adult, Economy
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Cheap flight deals from Keflavik Intl to Illinois

Keep the following information in mind while searching for Keflavik Intl to Illinois flight deals. Data was last updated July 30, 2025.

Round-trip from

$437
(Kiwi.com)

One-way from

$286
(Kiwi.com)

Good round-trip deal

$834 or less

Good one-way deal

$470 or less
From Reykjavik Keflavik Intl to Illinois
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One-way flight from Reykjavik Keflavik Intl to Illinois
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Price to beat on a round-trip flight from Reykjavik Keflavik Intl to Illinois.
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Price to beat on a one-way flight from Reykjavik Keflavik Intl to Illinois.
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Find flight deals from Keflavik Intl to Illinois

Cheapest flights from Keflavik Intl to Illinois
Explore the most affordable flight options available from Keflavik Intl to Illinois. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 30, 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 7/29. 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 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 7/29$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 Gotogate deal was found by Cheapflights users on 7/30. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/209:50 amKEF - ORD
1 stop10h 14mAir Canada
Fri 9/266:06 pmORD - KEF
2 stops33h 04mAir Canada
Deal found 7/30$726
This Delta deal was found by Cheapflights users on 7/30. 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.
Mon 10/138:45 amKEF - MDW
2 stops18h 29mDelta
Fri 10/241:08 pmMDW - KEF
2 stops15h 22mDelta
Deal found 7/30$801
This Air France deal was found by Cheapflights users on 7/30. 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 France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/1411:25 amKEF - MDW
2 stops15h 49mAir France
Fri 10/241:08 pmMDW - KEF
2 stops15h 22mAir France
Deal found 7/30$807
This KLM deal was found by Cheapflights users on 7/30. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/68:50 amKEF - MDW
1 stop14h 50mKLM
Wed 8/139:15 amMDW - KEF
1 stop16h 45mKLM
Deal found 7/30$1,034

Cheapflights Fare Finder

 
Customize your flight search to find flights from Keflavik Intl to Illinois 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 30, 2025.
Use the filters below to find and compare flights from Reykjavik Keflavik Intl Airport to Illinois that are best for you.

Fly from

Keflavik Intl

Fly to

Illinois

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

6:06 pm-8:10 am

2 stops33h 04m

$726

ReykjavikChicago

KEF - MDW

KEFMDW

Reykjavik Keflavik Intl

Mon 10/13

8:45 am-10:14 pm

2 stops18h 29m

Chicago Midway

Fri 10/24

1:08 pm-9:30 am

2 stops15h 22m

$801

ReykjavikChicago

KEF - MDW

KEFMDW

Reykjavik Keflavik Intl

Tue 10/14

11:25 am-10:14 pm

2 stops15h 49m

Chicago Midway

Fri 10/24

1:08 pm-9:30 am

2 stops15h 22m

$807

ReykjavikChicago

KEF - ORD

KEFORD

Reykjavik Keflavik Intl

Tue 9/9

3:05 pm-9:58 pm

2 stops35h 53m

$286

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

Fri 10/17

3:05 pm-6:59 pm

1 stop32h 54m

$307

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/28

Showing 1-10 of 16 results
1
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Best time to book a flight from Keflavik Intl to Illinois

Have a flexible travel schedule? Discover the best time to fly to Illinois 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 Illinois

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

Find hourly flight availability from Keflavik Intl to Illinois. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated July 30, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Reykjavik Keflavik Intl Airport to Illinois as you normally would.

Weekly flight availability from Reykjavik Keflavik Intl Airport to Illinois

Explore weekly flight availability from Keflavik Intl to Illinois. 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 30, 2025.

The most flights from KEF to USIL are scheduled on a Tuesday (8 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 Illinois

Get insights into the airlines that provide service to Illinois. 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 Illinois. Reviews last updated July 30, 2025.
Read through reviews of airlines operating flights from Reykjavik Keflavik Intl Airport to Illinois, such as Delta, Air France, and Scandinavian Airlines. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,980 reviews

Boarding

8.2

Crew

8.5

Food

7.3

Overall

8.0

Comfort

7.9

Entertainment

7.9

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
7,980 reviews
Delta
8.0
Very good
7,980 reviews

Boarding

8.2

Crew

8.5

Food

7.3

Overall

8.0

Comfort

7.9

Entertainment

7.9

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
7,980 reviews

Boarding

8.2

Crew

8.5

Food

7.3

Overall

8.0

Comfort

7.9

Entertainment

7.9

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
1,453 reviews
Delta
8.0
Very good
7,980 reviews

Boarding

8.2

Crew

8.5

Food

7.3

Overall

8.0

Comfort

7.9

Entertainment

7.9

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.
WestJet
7.2
Good
2,975 reviews
Delta
8.0
Very good
7,980 reviews

Boarding

8.2

Crew

8.5

Food

7.3

Overall

8.0

Comfort

7.9

Entertainment

7.9

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 Canada
7.1
Good
9,837 reviews
Delta
8.0
Very good
7,980 reviews

Boarding

8.2

Crew

8.5

Food

7.3

Overall

8.0

Comfort

7.9

Entertainment

7.9

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 Illinois. 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 to fly from Reykjavik Keflavik Intl Airport to Illinois one-way?

    The cheapest airlines for a one-way flight from Reykjavik Keflavik Intl Airport to Illinois are WestJet ($299), Icelandair ($452), and Air France ($750).

  • What are the most popular routes from Reykjavik Keflavik Intl Airport to Illinois?

    The most popular route from Reykjavik Keflavik Intl Airport to Illinois is Reykjavik Keflavik Intl - Chicago O'Hare Intl. You may also consider Reykjavik Keflavik Intl - Chicago Midway or Reykjavik Keflavik Intl - Lambert-St Louis.

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

    No one likes to see their flight delayed. When booking a flight from Reykjavik Keflavik Intl Airport to Illinois consider choosing Air Canada (86%), Austrian Airlines (86%) or Brussels Airlines (86%) as they are the most reliable in getting you off to your destination on time.

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

    The cheapest flight price from Reykjavik Keflavik Intl Airport to Illinois is $454. On average you can expect to pay $677. The most popular route, (Reykjavik Keflavik Intl - Chicago O'Hare Intl), can usually be booked for $553.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Keflavik Intl to Illinois 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 Illinois?

    Currently, August is the cheapest month in which you can book a flight from Reykjavik Keflavik Intl Airport to Illinois (average of $245). Flying from Reykjavik Keflavik Intl Airport to Illinois 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 Illinois

Discover the top airline that operate flights from Keflavik Intl to Illinois. 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 30, 2025.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest$483Average$548FlexibilityNo cancel feeOn-time76%

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