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$295+ 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 8/20. Fares are subject to change and may not be available on all flights or dates of travel.
KEF — ORD
May 4 — May 111
Sun 5/4
Sun 5/11
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 April 29, 2025.

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
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 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 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.
Fri 6/1312:00 pmKEF - STL
2 stops39h 27mUnited Airlines
Fri 6/208:25 amSTL - KEF
2 stops19h 05mUnited Airlines
Deal found 4/29$744
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 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.
Thu 5/1511:25 amKEF - STL
1 stop14h 23mDelta
Mon 5/196:00 amSTL - KEF
1 stop22h 30mDelta
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 Expedia 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/1511:25 amKEF - STL
2 stops34h 10mKLM
Mon 5/197:06 pmSTL - KEF
2 stops30h 14mKLM
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 Air France 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 Air France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 6/149:30 amKEF - STL
1 stop18h 52mAir France
Sat 6/213:42 pmSTL - KEF
2 stops12h 48mAir France
Deal found 4/29$806
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

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 April 29, 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

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

ReykjavikSt. Louis

KEF - STL

KEFSTL

Reykjavik Keflavik Intl

Fri 6/13

12:00 pm-10:45 am

1 stop27h 45m

Lambert-St Louis

Fri 6/20

8:25 am-8:30 am

2 stops19h 05m

$744

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

ReykjavikSt. Louis

KEF - STL

KEFSTL

Reykjavik Keflavik Intl

Thu 5/15

11:25 am-8:48 pm

1 stop14h 23m

Lambert-St Louis

Mon 5/19

6:00 am-9:30 am

1 stop22h 30m

$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

ReykjavikSt. Louis

KEF - STL

KEFSTL

Reykjavik Keflavik Intl

Thu 5/15

11:25 am-4:35 pm

2 stops34h 10m

Lambert-St Louis

Mon 5/19

7:06 pm-6:20 am

2 stops30h 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

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/28

Showing 1-10 of 46 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.

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 April 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 April 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
7,929 reviews

Crew

8.5

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Food

7.3

Overall

8.0

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

Crew

8.5

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Food

7.3

Overall

8.0

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

Crew

8.5

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Food

7.3

Overall

8.0

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

Crew

8.5

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Food

7.3

Overall

8.0

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

Crew

8.5

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Food

7.3

Overall

8.0

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

Crew

8.5

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Food

7.3

Overall

8.0

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 WestJet ($295), Icelandair ($437), and Finnair ($656).

  • 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 $358. On average you can expect to pay $1,565. The most popular route, (Reykjavik Keflavik Intl - Chicago O'Hare Intl), can usually be booked for $559.

  • 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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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 April 29, 2025.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest$483Average$664FlexibilityNo cancel feeOn-time76%

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