HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Illinois

$255+ 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 10/4. Fares are subject to change and may not be available on all flights or dates of travel.
KEF — ORD
Jun 17 — Jun 241
Tue 6/17
Tue 6/24
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Keflavik Intl to Illinois with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

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 June 12, 2025.

Round-trip from

$494
(Gotogate)

One-way from

$255
(Kiwi.com)

Good round-trip deal

$745 or less

Good one-way deal

$459 or less
From Reykjavik Keflavik Intl to Illinois
Search Deals
One-way flight from Reykjavik Keflavik Intl to Illinois
Search Deals
Price to beat on a round-trip flight from Reykjavik Keflavik Intl to Illinois.
Search Deals
Price to beat on a one-way flight from Reykjavik Keflavik Intl to Illinois.
Search Deals

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 June 12, 2025.

This Gotogate deal was found by Cheapflights users on 6/11. 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.
Wed 10/1510:20 amKEF - ORD
1 stop34h 50mScandinavian Airlines
Mon 10/207:15 pmORD - KEF
1 stop33h 15mScandinavian Airlines
Deal found 6/11$494
This Ticket deal was found by Cheapflights users on 6/10. 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.
Sun 8/37:35 pmKEF - ORD
Nonstop6h 40mIcelandair
Sat 8/910:15 pmORD - KEF
Nonstop6h 05mIcelandair
Deal found 6/10$542
This Mytrip deal was found by Cheapflights users on 6/12. 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 6/179:35 amKEF - ORD
2 stops29h 17mMultiple Airlines
Tue 6/2410:43 amORD - KEF
3 stops37h 02mMultiple Airlines
Deal found 6/12$657
This lol.travel deal was found by Cheapflights users on 6/12. 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 lol.travel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/312:00 pmKEF - ORD
Nonstop6h 50mUnited Airlines
Sat 8/95:58 pmORD - KEF
1 stop9h 12mUnited Airlines
Deal found 6/12$728
This Flightnetwork deal was found by Cheapflights users on 6/10. 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 Flightnetwork is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/269:30 amKEF - STL
2 stops15h 15mAir Canada
Sat 8/25:00 amSTL - KEF
2 stops22h 10mAir Canada
Deal found 6/10$728
This Booking.com deal was found by Cheapflights users on 6/12. 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.
Tue 8/199:50 amKEF - ORD
1 stop28h 19mAir Canada
Fri 8/299:55 amORD - KEF
1 stop17h 20mAir Canada
Deal found 6/12$740
This United Airlines deal was found by Cheapflights users on 6/10. 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 7/259:30 amKEF - STL
1 stop16h 20mUnited Airlines
Fri 8/18:00 amSTL - KEF
1 stop19h 30mUnited Airlines
Deal found 6/10$746
This Lufthansa deal was found by Cheapflights users on 6/11. 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 Lufthansa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/2512:25 amKEF - ORD
1 stop19h 30mLufthansa
Wed 7/29:40 pmORD - KEF
1 stop21h 30mLufthansa
Deal found 6/11$750
This Bravofly deal was found by Cheapflights users on 6/12. 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 Bravofly is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/199:30 amKEF - MDW
1 stop13h 07mMultiple Airlines
Fri 8/297:17 pmMDW - KEF
1 stop30h 43mMultiple Airlines
Deal found 6/12$817
This Austrian Airlines deal was found by Cheapflights users on 6/10. 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 Austrian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/2312:10 amKEF - ORD
2 stops40h 55mAustrian Airlines
Wed 10/13:45 pmORD - KEF
2 stops50h 35mAustrian Airlines
Deal found 6/10$869
This Mytrip deal was found by Cheapflights users on 6/10. 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.
Sat 7/269:35 amKEF - STL
3 stops29h 17mMultiple Airlines
Sat 8/24:00 pmSTL - KEF
3 stops35h 15mMultiple Airlines
Deal found 6/10$876
This Delta deal was found by Cheapflights users on 6/12. 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 7/18:50 amKEF - MDW
1 stop14h 51mDelta
Thu 7/311:09 pmMDW - KEF
1 stop12h 11mDelta
Deal found 6/12$907

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 June 12, 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

10:20 am-4:10 pm

1 stop34h 50m

Chicago O'Hare Intl

Mon 10/20

7:15 pm-9:30 am

1 stop33h 15m

$494

ReykjavikChicago

KEF - ORD

KEFORD

Reykjavik Keflavik Intl

Sun 8/3

7:35 pm-9:15 pm

Nonstop6h 40m

Chicago O'Hare Intl

Sat 8/9

10:15 pm-9:20 am

Nonstop6h 05m

$542

ReykjavikChicago

KEF - ORD

KEFORD

Reykjavik Keflavik Intl

Sun 8/3

3:45 pm-8:55 am

2 stops22h 10m

Chicago O'Hare Intl

Sat 8/9

4:37 pm-4:55 am

2 stops31h 18m

$705

ReykjavikChicago

KEF - ORD

KEFORD

Reykjavik Keflavik Intl

Sun 8/3

12:00 pm-1:50 pm

Nonstop6h 50m

Chicago O'Hare Intl

Sat 8/9

5:58 pm-8:10 am

1 stop9h 12m

$728

ReykjavikSt. Louis

KEF - STL

KEFSTL

Reykjavik Keflavik Intl

Sat 7/26

9:30 am-7:45 pm

2 stops15h 15m

Lambert-St Louis

Sat 8/2

5:00 am-8:10 am

2 stops22h 10m

$728

ReykjavikChicago

KEF - ORD

KEFORD

Reykjavik Keflavik Intl

Tue 8/19

9:50 am-9:09 am

1 stop28h 19m

Chicago O'Hare Intl

Fri 8/29

9:55 am-8:15 am

1 stop17h 20m

$740

ReykjavikSt. Louis

KEF - STL

KEFSTL

Reykjavik Keflavik Intl

Fri 7/25

9:30 am-8:50 pm

1 stop16h 20m

Lambert-St Louis

Fri 8/1

8:00 am-8:30 am

1 stop19h 30m

$746

ReykjavikChicago

KEF - ORD

KEFORD

Reykjavik Keflavik Intl

Wed 6/25

12:25 am-2:55 pm

1 stop19h 30m

Chicago O'Hare Intl

Wed 7/2

9:40 pm-12:10 am

1 stop21h 30m

$750

ReykjavikChicago

KEF - MDW

KEFMDW

Reykjavik Keflavik Intl

Tue 8/19

9:30 am-5:37 pm

1 stop13h 07m

Chicago Midway

Fri 8/29

7:17 pm-7:00 am

1 stop30h 43m

$817

ReykjavikChicago

KEF - ORD

KEFORD

Reykjavik Keflavik Intl

Tue 9/23

12:10 am-12:05 pm

2 stops40h 55m

Chicago O'Hare Intl

Wed 10/1

3:45 pm-11:20 pm

2 stops50h 35m

$869

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/10

Showing 1-10 of 40 results
1
2
3
4

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 June 12, 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 June 12, 2025.

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

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 June 12, 2025.
Get a feel of what it's like to fly with Delta, KLM and Austrian Airlines 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
7,950 reviews

Food

7.3

Boarding

8.2

Comfort

7.9

Overall

8.0

Entertainment

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Delta
8.0
Very good
7,950 reviews
Delta
8.0
Very good
7,950 reviews

Food

7.3

Boarding

8.2

Comfort

7.9

Overall

8.0

Entertainment

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
KLM
7.8
Good
1,358 reviews
Delta
8.0
Very good
7,950 reviews

Food

7.3

Boarding

8.2

Comfort

7.9

Overall

8.0

Entertainment

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Austrian Airlines
7.6
Good
802 reviews
Delta
8.0
Very good
7,950 reviews

Food

7.3

Boarding

8.2

Comfort

7.9

Overall

8.0

Entertainment

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Finnair
7.6
Good
1,290 reviews
Delta
8.0
Very good
7,950 reviews

Food

7.3

Boarding

8.2

Comfort

7.9

Overall

8.0

Entertainment

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Air France
7.5
Good
1,463 reviews
Delta
8.0
Very good
7,950 reviews

Food

7.3

Boarding

8.2

Comfort

7.9

Overall

8.0

Entertainment

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

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 ($255), Icelandair ($441), and Scandinavian Airlines ($605).

  • 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 Icelandair (86%), Air Canada (85%) or Austrian Airlines (85%) 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 $430. On average you can expect to pay $1,762. The most popular route, (Reykjavik Keflavik Intl - Chicago O'Hare Intl), can usually be booked for $494.

  • 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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Keflavik Intl to Illinois

See prices for flight routes from nearby airports that may be better suited for you.
Keflavik Intl to John F Kennedy Intl flights
Keflavik Intl to Newark flights
Keflavik Intl to Seattle flights
Keflavik Intl to Boston flights
Keflavik Intl to Baltimore flights
Keflavik Intl to Orlando flights
Keflavik Intl to Miami flights
Keflavik Intl to Dallas/Fort Worth flights
Keflavik Intl to Dulles Intl flights
Keflavik Intl to Fort Lauderdale flights
Keflavik Intl to O'Hare Intl flights
Keflavik Intl to West Palm Beach flights
Keflavik Intl to Minneapolis flights
Keflavik Intl to San Diego flights
Keflavik Intl to San Francisco flights
Keflavik Intl to Denver flights
Keflavik Intl to Detroit flights
Keflavik Intl to San Jose flights
Keflavik Intl to Los Angeles flights
Keflavik Intl to Honolulu flights
Keflavik Intl to Las Vegas flights
Keflavik Intl to Philadelphia flights
Keflavik Intl to Santa Ana flights
Keflavik Intl to Oakland flights
Keflavik Intl to Austin flights
Keflavik Intl to Tampa flights
Keflavik Intl to Kansas City flights
Keflavik Intl to New Orleans flights
Keflavik Intl to St. Louis flights
Keflavik Intl to Cleveland flights
Keflavik Intl to Sky Harbor Intl flights
Keflavik Intl to Hobby flights
Keflavik Intl to Tucson flights
Keflavik Intl to Anchorage flights
Keflavik Intl to Charlotte flights
Keflavik Intl to New Bedford flights

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 June 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest$483Average$664FlexibilityNo cancel feeOn-time76%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.