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$287+ 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 4/1. Fares are subject to change and may not be available on all flights or dates of travel.
KEF — ORD
Feb 3 — Feb 101
Mon 2/3
Mon 2/10
1 adult, Economy
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Cheap flight deals from Keflavik Intl to Illinois

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

Round-trip from

$391
(Kiwi.com)

One-way from

$287
(Kiwi.com)

Good round-trip deal

$483 or less

Good one-way deal

$346 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 January 29, 2025.

This Kiwi.com deal was found by Cheapflights users on 1/29. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/63:20 pmKEF - MDW
1 stop32h 03mMultiple Airlines
Mon 3/1012:26 pmMDW - KEF
1 stop11h 34mMultiple Airlines
Deal found 1/29$391
This Mytrip deal was found by Cheapflights users on 1/27. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/44:00 pmKEF - ORD
2 stops23h 44mMultiple Airlines
Tue 3/116:45 amORD - KEF
2 stops17h 00mMultiple Airlines
Deal found 1/27$466
This Gotogate deal was found by Cheapflights users on 1/29. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/244:45 pmKEF - ORD
Nonstop6h 35mIcelandair
Wed 4/27:30 pmORD - KEF
Nonstop6h 05mIcelandair
Deal found 1/29$491
This Booking.com deal was found by Cheapflights users on 1/28. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/2810:20 amKEF - ORD
1 stop34h 50mScandinavian Airlines
Sun 6/17:15 pmORD - KEF
1 stop33h 15mScandinavian Airlines
Deal found 1/28$647
This United Airlines deal was found by Cheapflights users on 1/28. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/2512:00 pmKEF - ORD
Nonstop6h 50mUnited Airlines
Sat 5/319:31 pmORD - KEF
2 stops30h 04mUnited Airlines
Deal found 1/28$692
This KLM deal was found by Cheapflights users on 1/28. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/278:50 amKEF - MDW
1 stop13h 13mKLM
Mon 6/22:00 pmMDW - KEF
1 stop12h 00mKLM
Deal found 1/28$722
This Delta deal was found by Cheapflights users on 1/28. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/2711:25 amKEF - ORD
1 stop27h 37mDelta
Wed 6/47:00 amORD - KEF
1 stop21h 30mDelta
Deal found 1/28$722
This Delta deal was found by Cheapflights users on 1/28. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/2711:25 amKEF - MDW
2 stops26h 17mDelta
Wed 6/49:30 amMDW - KEF
2 stops19h 00mDelta
Deal found 1/28$723
This Scandinavian Airlines deal was found by Cheapflights users on 1/29. 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 Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 3/157:35 amKEF - STL
2 stops20h 56mScandinavian Airlines
Sat 3/224:29 pmSTL - KEF
2 stops25h 51mScandinavian Airlines
Deal found 1/29$777
This KLM deal was found by Cheapflights users on 1/29. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/18:50 amKEF - ORD
1 stop12h 44mKLM
Thu 7/311:35 pmORD - KEF
1 stop11h 45mKLM
Deal found 1/29$792
This Air Canada deal was found by Cheapflights users on 1/28. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/110:00 amKEF - ORD
2 stops27h 00mAir Canada
Thu 7/318:25 pmORD - KEF
1 stop31h 10mAir Canada
Deal found 1/28$833
This WestJet deal was found by Cheapflights users on 1/28. 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 WestJet is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/279:35 amKEF - ORD
1 stop12h 09mWestJet
Sat 5/315:30 pmORD - KEF
1 stop33h 45mWestJet
Deal found 1/28$875

Find flights from Keflavik Intl to Illinois within your budget

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 January 29, 2025.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

ReykjavikChicago

KEF - MDW

KEFMDW

Reykjavik Keflavik Intl

Thu 3/6

3:20 pm-5:23 pm

1 stop32h 03m

Chicago Midway

Mon 3/10

12:26 pm-5:00 am

1 stop11h 34m

$391

ReykjavikChicago

KEF - ORD

KEFORD

Reykjavik Keflavik Intl

Tue 3/4

4:00 pm-9:44 am

2 stops23h 44m

Chicago O'Hare Intl

Tue 3/11

6:45 am-4:45 am

2 stops17h 00m

$466

ReykjavikChicago

KEF - ORD

KEFORD

Reykjavik Keflavik Intl

Mon 3/24

4:45 pm-6:20 pm

Nonstop6h 35m

Chicago O'Hare Intl

Wed 4/2

7:30 pm-6:35 am

Nonstop6h 05m

$491

ReykjavikChicago

KEF - ORD

KEFORD

Reykjavik Keflavik Intl

Wed 5/28

10:20 am-4:10 pm

1 stop34h 50m

Chicago O'Hare Intl

Sun 6/1

7:15 pm-9:30 am

1 stop33h 15m

$647

ReykjavikChicago

KEF - ORD

KEFORD

Reykjavik Keflavik Intl

Sun 5/25

12:00 pm-1:50 pm

Nonstop6h 50m

Chicago O'Hare Intl

Sat 5/31

9:31 pm-8:35 am

2 stops30h 04m

$692

ReykjavikChicago

KEF - MDW

KEFMDW

Reykjavik Keflavik Intl

Tue 5/27

8:50 am-5:03 pm

1 stop13h 13m

Chicago Midway

Mon 6/2

2:00 pm-7:00 am

1 stop12h 00m

$722

ReykjavikChicago

KEF - ORD

KEFORD

Reykjavik Keflavik Intl

Tue 5/27

8:50 am-4:36 pm

1 stop12h 46m

Chicago O'Hare Intl

Mon 6/2

12:17 pm-7:00 am

1 stop13h 43m

$722

ReykjavikChicago

KEF - MDW

KEFMDW

Reykjavik Keflavik Intl

Tue 5/27

11:25 am-8:42 am

2 stops26h 17m

Chicago Midway

Wed 6/4

9:30 am-9:30 am

2 stops19h 00m

$723

ReykjavikChicago

KEF - ORD

KEFORD

Reykjavik Keflavik Intl

Sun 5/25

11:25 am-7:27 am

2 stops25h 02m

Chicago O'Hare Intl

Tue 6/3

8:55 am-9:30 am

2 stops19h 35m

$723

ReykjavikSt. Louis

KEF - STL

KEFSTL

Reykjavik Keflavik Intl

Sat 3/15

7:35 am-11:31 pm

2 stops20h 56m

Lambert-St Louis

Sat 3/22

4:29 pm-11:20 pm

2 stops25h 51m

$777

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/29

Showing 1-10 of 33 results
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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.

Travel insights for flights from Keflavik Intl to Illinois

Get recent, data-driven insights about flights from Keflavik Intl to Illinois including ideal travel times, pricing trends, and more.

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 January 29, 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.

Rainfall in Illinois by month

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

In terms of precipitation, rainfall in Illinois 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 Illinois when rainfall is around 1.7 in.

Temperature in Illinois by month

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

If weather is an important factor for your trip to Illinois, 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 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 January 29, 2025.
Get a feel of what it's like to fly with Delta, KLM and LOT from Reykjavik to Illinois by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
8,456 reviews

Food

7.3

Entertainment

7.9

Comfort

8.0

Crew

8.5

Overall

8.0

Boarding

8.2

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
8,456 reviews
Delta
8.0
Very good
8,456 reviews

Food

7.3

Entertainment

7.9

Comfort

8.0

Crew

8.5

Overall

8.0

Boarding

8.2

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
1,335 reviews
Delta
8.0
Very good
8,456 reviews

Food

7.3

Entertainment

7.9

Comfort

8.0

Crew

8.5

Overall

8.0

Boarding

8.2

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
1,097 reviews
Delta
8.0
Very good
8,456 reviews

Food

7.3

Entertainment

7.9

Comfort

8.0

Crew

8.5

Overall

8.0

Boarding

8.2

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
1,285 reviews
Delta
8.0
Very good
8,456 reviews

Food

7.3

Entertainment

7.9

Comfort

8.0

Crew

8.5

Overall

8.0

Boarding

8.2

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
7.5
Good
786 reviews
Delta
8.0
Very good
8,456 reviews

Food

7.3

Entertainment

7.9

Comfort

8.0

Crew

8.5

Overall

8.0

Boarding

8.2

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 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 Icelandair ($398), WestJet ($556), and Finnair ($592).

  • 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 cheapest flights from Reykjavik Keflavik Intl Airport to Illinois?

    The cheapest flight price from Reykjavik Keflavik Intl Airport to Illinois is $346. On average you can expect to pay $1,611. The most popular route, (Reykjavik Keflavik Intl - Chicago O'Hare Intl), can usually be booked for $490.

  • 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 $325). 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.

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Alternative routes for Keflavik Intl to Illinois

See prices for flight routes from nearby airports that may be better suited for you.
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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 January 29, 2025.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest$483Average$664FlexibilityNo cancel feeOn-time76%
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