$207+ 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 7/5. Fares are subject to change and may not be available on all flights or dates of travel.
Find cheap flights from Illinois to Keflavik Intl 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 Illinois to Keflavik Intl
Keep the following information in mind while searching for Illinois to Keflavik Intl flight deals. Data was last updated June 18, 2025.
Round-trip from | $564 (SmartFares) |
|---|---|
One-way from | $207 (Mytrip) |
Good round-trip deal | $557 or less |
Good one-way deal | $256 or less |
Find flight deals from Illinois to Keflavik Intl
Cheapest flights from Illinois to Keflavik IntlExplore 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 June 18, 2025.
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 June 18, 2025.
This SmartFares deal was found by Cheapflights users on 6/18. 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.
This KLM deal was found by Cheapflights users on 6/18. 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.
This KLM deal was found by Cheapflights users on 6/18. 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.
This Cheapflightsfares deal was found by Cheapflights users on 6/17. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This United Airlines deal was found by Cheapflights users on 6/16. 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.
This Delta deal was found by Cheapflights users on 6/18. 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.
This Orbitz deal was found by Cheapflights users on 6/18. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This Booking.com deal was found by Cheapflights users on 6/17. 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.
This oojo deal was found by Cheapflights users on 6/16. 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.
This Lufthansa deal was found by Cheapflights users on 6/17. 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.
This Mytrip deal was found by Cheapflights users on 6/17. 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.
This United Airlines deal was found by Cheapflights users on 6/16. 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.
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 June 18, 2025.
Use the filters below to find and compare flights from Illinois to Reykjavik Keflavik Intl Airport that are best for you.
Fly from
Fly to
Route
Depart
Return
Price
ChicagoReykjavik
ORD - KEF
ORDKEF
Chicago O'Hare Intl
Thu 9/18
10:15 pm-9:20 am
Nonstop6h 05m
Reykjavik Keflavik Intl
Sun 9/21
4:25 pm-6:15 pm
Nonstop6h 50m
ChicagoReykjavik
MDW - KEF
MDWKEF
Chicago Midway
Sat 8/30
1:08 pm-6:20 am
1 stop12h 12m
Reykjavik Keflavik Intl
Tue 9/9
11:25 am-9:26 pm
2 stops15h 01m
ChicagoReykjavik
ORD - KEF
ORDKEF
Chicago O'Hare Intl
Wed 9/24
1:16 pm-9:30 am
2 stops15h 14m
Reykjavik Keflavik Intl
Tue 9/30
8:45 am-4:34 pm
1 stop12h 49m
ChicagoReykjavik
ORD - KEF
ORDKEF
Chicago O'Hare Intl
Sat 7/12
8:40 am-8:10 am
1 stop18h 30m
Reykjavik Keflavik Intl
Tue 7/22
9:50 am-5:37 pm
1 stop12h 47m
St. LouisReykjavik
STL - KEF
STLKEF
Lambert-St Louis
Wed 8/13
1:30 pm-8:10 am
1 stop13h 40m
Reykjavik Keflavik Intl
Thu 8/21
9:30 am-12:25 pm
2 stops31h 55m
ChicagoReykjavik
ORD - KEF
ORDKEF
Chicago O'Hare Intl
Wed 9/17
5:55 pm-6:20 am
2 stops31h 25m
Reykjavik Keflavik Intl
Mon 9/29
8:45 am-9:12 pm
2 stops17h 27m
ChicagoReykjavik
ORD - KEF
ORDKEF
Chicago O'Hare Intl
Thu 10/2
1:59 pm-9:10 am
2 stops38h 11m
Reykjavik Keflavik Intl
Mon 10/6
10:45 am-4:07 pm
2 stops34h 22m
St. LouisReykjavik
STL - KEF
STLKEF
Lambert-St Louis
Wed 8/13
9:15 am-8:10 am
2 stops17h 55m
Reykjavik Keflavik Intl
Thu 8/21
9:30 am-3:44 pm
2 stops35h 14m
ChicagoReykjavik
ORD - KEF
ORDKEF
Chicago O'Hare Intl
Sat 11/22
7:20 pm-11:55 pm
1 stop22h 35m
Reykjavik Keflavik Intl
Wed 11/26
11:30 am-4:45 pm
1 stop35h 15m
ChicagoReykjavik
ORD - KEF
ORDKEF
Chicago O'Hare Intl
Thu 11/20
2:40 pm-3:45 pm
2 stops19h 05m
Reykjavik Keflavik Intl
Sun 11/30
4:45 pm-8:05 pm
1 stop33h 20m
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.
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 $656). 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 June 18, 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 June 18, 2025.
The most flights from USIL to KEF 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 Keflavik Intl by month
Plan your trip to Keflavik Intl by taking into account the average rainfall totals by month.
In terms of precipitation, rainfall in Reykjavik Keflavik Intl Airport ranges from 1.6 - 3.1 inches per month. January is typically the wettest month, when rainfall can reach 3.1 in. May is typically the driest time to visit Reykjavik Keflavik Intl Airport when rainfall is around 1.6 in.
Temperature in Keflavik Intl by month
Plan your trip to Keflavik Intl by taking into account the average temperature totals by month.
If weather is an important factor for your trip to Reykjavik Keflavik Intl Airport, 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 51.8 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 32.0 F).
Reviews of airlines servicing Keflavik Intl
Get insights into the airlines that provide service to Keflavik Intl. 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 Keflavik Intl. Reviews last updated June 18, 2025.
Peruse reviews from past customers who have flown with Delta, KLM and Air France from Illinois to Reykjavik to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Boarding
Entertainment
Food
Overall
Comfort
Crew
Reviews
Kim,May 2025
PIH - SLC
Boarding
Entertainment
Food
Overall
Comfort
Crew
Reviews
Kim,May 2025
PIH - SLC
Boarding
Entertainment
Food
Overall
Comfort
Crew
Reviews
Kim,May 2025
PIH - SLC
Boarding
Entertainment
Food
Overall
Comfort
Crew
Reviews
Kim,May 2025
PIH - SLC
Boarding
Entertainment
Food
Overall
Comfort
Crew
Reviews
Kim,May 2025
PIH - SLC
Boarding
Entertainment
Food
Overall
Comfort
Crew
Reviews
Kim,May 2025
PIH - SLC
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.
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Alternative routes for Illinois to Keflavik Intl
See prices for flight routes from nearby airports that may be better suited for you.
Top 3 airlines flying from Illinois to Keflavik Intl
Discover the top 3 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 June 18, 2025.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$513 | Average$668 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$532 | Average$559 | FlexibilityNo cancel fee | On-time67% | |
| Cheapest$612 | Average$991 | FlexibilityNo cancel fee | On-time69% |