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Keflavik Intl

$181+ Cheap flights from Illinois to Keflavik Intl (KEF)

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 10/19. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — KEF
Aug 19 — Aug 261
Tue 8/19
Tue 8/26
1 adult, Economy
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Cheap flight deals from Illinois to Keflavik Intl

Keep the following information in mind while searching for Illinois to Keflavik Intl flight deals. Data was last updated August 14, 2025.

Round-trip from

$348
(Icelandair)

One-way from

$181
(PLAY)

Popular in

December

Cheapest in

April

Average price

$664

Good round-trip deal

$474 or less

Good one-way deal

$277 or less
From Illinois to Reykjavik Keflavik Intl
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One-way flight from Illinois to Reykjavik Keflavik Intl
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Highest demand for flights based on searches. 3% potential increase in price ($22 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($12 potential savings vs. average RT price).
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Average for round-trip flights in August 2025
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Price to beat on a round-trip flight from Illinois to Reykjavik Keflavik Intl.
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Price to beat on a one-way flight from Illinois to Reykjavik Keflavik Intl.
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Find flight deals from Illinois to Keflavik Intl

Cheapest flights from Illinois to Keflavik Intl
Explore the most affordable flight options available from Illinois to Keflavik Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 14, 2025.

This Icelandair deal was found by Cheapflights users on 8/13. 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 Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/76:30 pmORD - KEF
Nonstop6h 15mIcelandair
Sat 11/154:30 pmKEF - ORD
Nonstop6h 50mIcelandair
Deal found 8/13$348
This oojo deal was found by Cheapflights users on 8/14. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/1910:15 pmORD - KEF
Nonstop6h 05mIcelandair
Wed 9/34:25 pmKEF - ORD
Nonstop6h 50mIcelandair
Deal found 8/14$349
This FlightHub deal was found by Cheapflights users on 8/13. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/177:25 pmORD - KEF
Nonstop6h 15mIcelandair
Fri 8/224:25 pmKEF - ORD
Nonstop6h 50mIcelandair
Deal found 8/13$350
This SmartFares deal was found by Cheapflights users on 8/14. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/146:30 pmORD - KEF
Nonstop6h 15mIcelandair
Fri 12/194:30 pmKEF - ORD
Nonstop6h 50mIcelandair
Deal found 8/14$355
This Icelandair deal was found by Cheapflights users on 8/14. 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 Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/1810:15 pmORD - KEF
Nonstop6h 05mIcelandair
Fri 8/227:35 pmKEF - ORD
Nonstop6h 40mIcelandair
Deal found 8/14$361
This SmartFares deal was found by Cheapflights users on 8/14. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/76:30 pmORD - KEF
Nonstop6h 15mIcelandair
Sun 11/164:30 pmKEF - ORD
Nonstop6h 50mIcelandair
Deal found 8/14$363
This Expedia deal was found by Cheapflights users on 8/14. 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.
Sun 12/146:30 pmORD - KEF
Nonstop6h 15mIcelandair
Thu 12/184:30 pmKEF - ORD
Nonstop6h 50mIcelandair
Deal found 8/14$373
This Kiwi.com deal was found by Cheapflights users on 8/13. 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.
Sat 8/3010:15 pmORD - KEF
Nonstop6h 05mIcelandair
Thu 9/47:35 pmKEF - ORD
Nonstop6h 40mIcelandair
Deal found 8/13$375
This Gotogate deal was found by Cheapflights users on 8/12. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/67:25 pmORD - KEF
Nonstop6h 15mIcelandair
Wed 10/154:25 pmKEF - ORD
Nonstop6h 50mIcelandair
Deal found 8/12$378
This SmartFares deal was found by Cheapflights users on 8/13. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/1210:15 pmORD - KEF
Nonstop6h 05mIcelandair
Fri 10/177:35 pmKEF - ORD
Nonstop6h 40mIcelandair
Deal found 8/13$381
This FlightHub deal was found by Cheapflights users on 8/13. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/267:30 pmORD - KEF
Nonstop6h 15mIcelandair
Tue 11/44:30 pmKEF - ORD
Nonstop6h 50mIcelandair
Deal found 8/13$387
This Kiwi.com deal was found by Cheapflights users on 8/13. 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.
Mon 10/204:12 pmMDW - KEF
1 stop31h 43mMultiple Airlines
Fri 10/243:05 pmKEF - MDW
1 stop31h 08mMultiple Airlines
Deal found 8/13$430

Cheapflights Fare Finder

 
Customize your flight search to find flights from Illinois to Keflavik Intl 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 August 14, 2025.
Use the filters below to find and compare flights from Illinois to Reykjavik Keflavik Intl Airport that are best for you.

Fly from

Illinois

Fly to

Keflavik Intl

Route

Depart

Return

Price

ChicagoReykjavik

ORD - KEF

ORDKEF

Chicago O'Hare Intl

Fri 9/26

10:15 pm-9:20 am

Nonstop6h 05m

Reykjavik Keflavik Intl

Wed 10/1

7:35 pm-9:15 pm

Nonstop6h 40m

$348

ChicagoReykjavik

ORD - KEF

ORDKEF

Chicago O'Hare Intl

Sun 10/12

10:15 pm-9:20 am

Nonstop6h 05m

Reykjavik Keflavik Intl

Fri 10/17

7:35 pm-9:15 pm

Nonstop6h 40m

$348

ChicagoReykjavik

ORD - KEF

ORDKEF

Chicago O'Hare Intl

Fri 11/7

6:30 pm-6:45 am

Nonstop6h 15m

Reykjavik Keflavik Intl

Sun 11/9

4:30 pm-5:20 pm

Nonstop6h 50m

$348

ChicagoReykjavik

ORD - KEF

ORDKEF

Chicago O'Hare Intl

Wed 11/5

6:30 pm-6:45 am

Nonstop6h 15m

Reykjavik Keflavik Intl

Sun 11/9

4:30 pm-5:20 pm

Nonstop6h 50m

$348

ChicagoReykjavik

ORD - KEF

ORDKEF

Chicago O'Hare Intl

Mon 9/29

7:25 pm-6:40 am

Nonstop6h 15m

Reykjavik Keflavik Intl

Fri 10/3

7:35 pm-9:15 pm

Nonstop6h 40m

$348

ChicagoReykjavik

ORD - KEF

ORDKEF

Chicago O'Hare Intl

Sun 10/12

10:15 pm-9:20 am

Nonstop6h 05m

Reykjavik Keflavik Intl

Thu 10/16

4:25 pm-6:15 pm

Nonstop6h 50m

$348

ChicagoReykjavik

ORD - KEF

ORDKEF

Chicago O'Hare Intl

Sat 11/8

6:30 pm-6:45 am

Nonstop6h 15m

Reykjavik Keflavik Intl

Wed 11/12

4:30 pm-5:20 pm

Nonstop6h 50m

$348

ChicagoReykjavik

ORD - KEF

ORDKEF

Chicago O'Hare Intl

Sun 9/28

10:15 pm-9:20 am

Nonstop6h 05m

Reykjavik Keflavik Intl

Fri 10/3

7:35 pm-9:15 pm

Nonstop6h 40m

$348

ChicagoReykjavik

ORD - KEF

ORDKEF

Chicago O'Hare Intl

Wed 11/19

6:30 pm-6:45 am

Nonstop6h 15m

Reykjavik Keflavik Intl

Thu 11/27

4:30 pm-5:20 pm

Nonstop6h 50m

$348

ChicagoReykjavik

ORD - KEF

ORDKEF

Chicago O'Hare Intl

Sun 8/31

7:25 pm-6:40 am

Nonstop6h 15m

Reykjavik Keflavik Intl

Fri 9/5

7:35 pm-9:15 pm

Nonstop6h 40m

$361

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/12

Showing 1-10 of 55 results
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Best time to book a flight from Illinois to Keflavik Intl

Have a flexible travel schedule? Discover the best time to fly to Keflavik Intl from Illinois 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 Illinois to Reykjavik Keflavik Intl Airport

What is the cheapest month to book a flight from Illinois to Reykjavik Keflavik Intl Airport?

Currently, November is the cheapest month in which you can book a flight from Illinois to Reykjavik Keflavik Intl Airport (average of $328). Flying from Illinois to Reykjavik Keflavik Intl Airport in June is currently the most expensive (average of $655). 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.

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

Find hourly flight availability from Illinois to Keflavik Intl. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated August 14, 2025.

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

Weekly flight availability from Illinois to Reykjavik Keflavik Intl Airport

Explore weekly flight availability from Illinois to Keflavik Intl. 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 August 14, 2025.

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

Related info for your journey

Find useful and relevant information for your journey from Illinois to Keflavik Intl. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

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

    When deciding which route to take from Illinois to Reykjavik Keflavik Intl Airport consider Chicago O'Hare Intl - Reykjavik Keflavik Intl, Chicago Midway - Reykjavik Keflavik Intl or Lambert-St Louis - Reykjavik Keflavik Intl as they are the most popular.

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

    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 Illinois to Reykjavik Keflavik Intl Airport on time: Icelandair (84%), Air Canada (50%), Austrian Airlines (50%).

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

    On average you can expect to pay $1,107 for a flight from Illinois to Reykjavik Keflavik Intl Airport. The cheapest flight overall is $179 while the most popular route, (Chicago O'Hare Intl - Reykjavik Keflavik Intl) is currently priced at $329.

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

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

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

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

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

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

    Currently, November is the cheapest month in which you can book a flight from Illinois to Reykjavik Keflavik Intl Airport (average of $328). Flying from Illinois to Reykjavik Keflavik Intl Airport in June is currently the most expensive (average of $655). 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

Traveling to a place near Reykjavik Keflavik Intl Airport?

Book flights to Reykjavik Keflavik Intl Airport if you plan to visit one of these locations
Keflavik
Hveragerdi

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Top 2 airlines flying from Illinois to Keflavik Intl

Discover the top 2 airlines that operate flights from Illinois to Keflavik Intl. 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 August 14, 2025.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest$442Average$657FlexibilityNo cancel feeOn-time76%
United AirlinesCheapest$612Average$1,000FlexibilityNo cancel feeOn-time69%

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