$339+ Cheap flights from Chicago (CHI) 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 9/6. Fares are subject to change and may not be available on all flights or dates of travel.
CHI — KEF
Sep 10 — Sep 171
Round-trip
1 adult, Economy
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Find cheap flights from Chicago 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.Cheapflights Tip: The best prices from Chicago to Reykjavik Keflavik Intl are usually found in January or February, booked 70 days in advance, depart on a Wednesday or Tuesday and return on a Friday
Cheap flight deals from Chicago to Keflavik Intl
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Best
Last-minute
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Cheapest flights from Chicago to Keflavik IntlExplore the most affordable flight options available from Chicago to Keflavik Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 11, 2026.
Explore the most affordable flight options available from Chicago to Keflavik Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 11, 2026.
This Ticket deal was found by Cheapflights users on 8/8. 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 8/177:25 pm -
Nonstop6h 15m
Wed 8/267:45 pm -
Nonstop6h 40m
Deal found 8/8![Icelandair logo]()
$439
This Mytrip deal was found by Cheapflights users on 8/8. 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.
Fri 12/46:30 pm -
Nonstop6h 15m
Thu 12/104:30 pm -
Nonstop6h 50m
Deal found 8/8![Icelandair logo]()
$441
This Mytrip deal was found by Cheapflights users on 8/9. 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 10/197:25 pm -
Nonstop6h 15m
Mon 10/264:30 pm -
Nonstop6h 50m
Deal found 8/9![Icelandair logo]()
$443
This Cheapflightsfares deal was found by Cheapflights users on 8/10. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/317:30 pm -
Nonstop6h 15m
Mon 11/94:30 pm -
Nonstop6h 50m
Deal found 8/10![Icelandair logo]()
$444
This oojo deal was found by Cheapflights users on 8/7. 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.
Sun 10/117:25 pm -
Nonstop6h 15m
Sun 10/187:45 pm -
Nonstop6h 40m
Deal found 8/7![Icelandair logo]()
$452
This Mytrip deal was found by Cheapflights users on 8/7. 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.
Sun 9/2010:25 pm -
Nonstop6h 05m
Thu 9/244:25 pm -
Nonstop6h 50m
Deal found 8/7![Icelandair logo]()
$455
This Cheapflightsfares deal was found by Cheapflights users on 8/10. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/2410:25 pm -
Nonstop6h 05m
Fri 8/287:45 pm -
Nonstop6h 40m
Deal found 8/10![Icelandair logo]()
$456
This Cheapflightsfares deal was found by Cheapflights users on 8/7. 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.
Mon 8/247:25 pm -
Nonstop6h 15m
Mon 8/314:25 pm -
Nonstop6h 50m
Deal found 8/7![Icelandair logo]()
$457
This Mytrip deal was found by Cheapflights users on 8/10. 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.
Sun 9/610:25 pm -
Nonstop6h 05m
Wed 9/167:45 pm -
Nonstop6h 40m
Deal found 8/10![Icelandair logo]()
$460
This Kiwi.com deal was found by Cheapflights users on 8/10. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/166:30 pm -
Nonstop6h 15m
Mon 12/214:30 pm -
Nonstop6h 50m
Deal found 8/10![Icelandair logo]()
$465
This Icelandair deal was found by Cheapflights users on 8/6. 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.
Sun 10/1110:25 pm -
Nonstop6h 05m
Thu 10/154:25 pm -
Nonstop6h 50m
Deal found 8/6![Icelandair logo]()
$467
This Ticket deal was found by Cheapflights users on 8/8. 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 8/241:51 pm -
1 stop12h 09m
Fri 8/289:30 am -
1 stop13h 31m
Deal found 8/8![KLM logo]()
$746
Best flights from Chicago to Keflavik IntlDiscover carefully curated flight deals from Chicago to Keflavik Intl that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 11, 2026.
Discover carefully curated flight deals from Chicago to Keflavik Intl that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 11, 2026.
This Icelandair deal was found by Cheapflights users on 8/10. 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 Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/46:30 pm -
Nonstop6h 15m
Mon 12/74:30 pm -
Nonstop6h 50m
Deal found 8/10![Icelandair logo]()
$467
This United Airlines deal was found by Cheapflights users on 8/9. 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 10/239:35 pm -
Nonstop6h 15m
Mon 11/212:00 pm -
Nonstop6h 55m
Deal found 8/9![United Airlines logo]()
$516
This KLM deal was found by Cheapflights users on 8/8. 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.
Sat 8/221:25 pm -
1 stop13h 15m
Thu 8/279:30 am -
1 stop13h 31m
Deal found 8/8![KLM logo]()
$785
This Delta deal was found by Cheapflights users on 8/6. 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.
Sat 8/2210:56 am -
2 stops15h 44m
Thu 8/279:30 am -
2 stops14h 03m
Deal found 8/6![Delta logo]()
$790
This Icelandair deal was found by Cheapflights users on 8/11. 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 Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/172:40 pm -
1 stop10h 45m
Tue 10/275:00 pm -
1 stop20h 15m
Deal found 8/11![Multiple Airlines logo]()
$860
This United Airlines deal was found by Cheapflights users on 8/7. 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.
Wed 12/29:45 pm -
Nonstop6h 15m
Mon 12/712:00 pm -
Nonstop6h 55m
Deal found 8/7![United Airlines logo]()
$516
This United Airlines deal was found by Cheapflights users on 8/6. 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 9/146:25 am -
1 stop21h 05m
Mon 9/2110:00 am -
1 stop28h 00m
Deal found 8/6![United Airlines logo]()
$530
This United Airlines deal was found by Cheapflights users on 8/10. 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.
Sat 9/59:39 pm -
1 stop29h 51m
Mon 9/1410:00 am -
1 stop28h 53m
Deal found 8/10![United Airlines logo]()
$530
This United Airlines deal was found by Cheapflights users on 8/10. 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.
Thu 9/109:39 pm -
1 stop29h 51m
Tue 9/1510:00 am -
1 stop28h 00m
Deal found 8/10![United Airlines logo]()
$530
This United Airlines deal was found by Cheapflights users on 8/7. 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 9/65:56 pm -
1 stop8h 59m
Fri 9/1112:00 pm -
Nonstop6h 55m
Deal found 8/7![United Airlines logo]()
$533
This KLM deal was found by Cheapflights users on 8/7. 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.
Fri 9/1111:35 am -
2 stops16h 55m
Sat 9/1911:25 am -
2 stops16h 19m
Deal found 8/7![KLM logo]()
$790
This United Airlines deal was found by Cheapflights users on 8/6. 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.
Wed 8/269:35 pm -
Nonstop6h 15m
Mon 8/319:15 am -
1 stop27h 36m
Deal found 8/6![United Airlines logo]()
$533
This Icelandair deal was found by Cheapflights users on 8/10. 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 Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/710:20 am -
2 stops14h 10m
Sat 11/215:00 pm -
1 stop12h 00m
Deal found 8/10![Multiple Airlines logo]()
$869
This Delta deal was found by Cheapflights users on 8/9. 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.
Mon 9/219:59 am -
1 stop16h 01m
Sat 10/311:25 am -
2 stops16h 19m
Deal found 8/9![Delta logo]()
$896
This Icelandair deal was found by Cheapflights users on 8/7. 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.
Wed 12/21:15 pm -
2 stops11h 15m
Mon 12/75:00 pm -
1 stop10h 25m
Deal found 8/7![Multiple Airlines logo]()
$869
This KLM deal was found by Cheapflights users on 8/10. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/269:59 am -
1 stop16h 01m
Sun 8/309:30 am -
1 stop13h 31m
Deal found 8/10![KLM logo]()
$895
This Delta deal was found by Cheapflights users on 8/7. 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.
Sun 8/231:51 pm -
1 stop12h 09m
Thu 8/279:30 am -
2 stops14h 03m
Deal found 8/7![Delta logo]()
$910
This Icelandair deal was found by Cheapflights users on 8/6. 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.
Thu 11/1212:45 pm -
1 stop11h 45m
Mon 11/165:00 pm -
1 stop27h 40m
Deal found 8/6![Multiple Airlines logo]()
$878
This Delta deal was found by Cheapflights users on 8/10. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/1111:35 am -
2 stops16h 55m
Sat 9/1911:25 am -
2 stops16h 19m
Deal found 8/10![Delta logo]()
$910
Last-minute flights from Chicago to Keflavik IntlDiscover last-minute flight deals from Chicago to Keflavik Intl. Data last updated August 11, 2026 and is based on user searches.
Discover last-minute flight deals from Chicago to Keflavik Intl. Data last updated August 11, 2026 and is based on user searches.
This Ticket deal was found by Cheapflights users on 8/8. 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 8/177:25 pm -
Nonstop6h 15m
Wed 8/267:45 pm -
Nonstop6h 40m
Deal found 8/8![Icelandair logo]()
$439
This Icelandair deal was found by Cheapflights users on 8/8. 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.
Sun 8/2310:25 pm -
Nonstop6h 05m
Thu 12/34:30 pm -
Nonstop6h 50m
Deal found 8/8![Icelandair logo]()
$467
This Cheapflightsfares deal was found by Cheapflights users on 8/10. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/2410:25 pm -
Nonstop6h 05m
Fri 9/44:25 pm -
Nonstop6h 50m
Deal found 8/10![Icelandair logo]()
$456
This Cheapflightsfares deal was found by Cheapflights users on 8/7. 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.
Mon 8/247:25 pm -
Nonstop6h 15m
Mon 8/314:25 pm -
Nonstop6h 50m
Deal found 8/7![Icelandair logo]()
$457
This Ticket deal was found by Cheapflights users on 8/8. 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 8/241:51 pm -
1 stop12h 09m
Fri 8/289:30 am -
1 stop13h 31m
Deal found 8/8![KLM logo]()
$746
This oojo deal was found by Cheapflights users on 8/10. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/2910:25 pm -
Nonstop6h 05m
Sat 9/57:45 pm -
Nonstop6h 40m
Deal found 8/10![Icelandair logo]()
$465
This Kiwi.com deal was found by Cheapflights users on 8/9. 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 8/2910:25 pm -
Nonstop6h 05m
Tue 9/87:45 pm -
Nonstop6h 40m
Deal found 8/9![Icelandair logo]()
$479
This Icelandair deal was found by Cheapflights users on 8/6. 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 8/3110:25 pm -
Nonstop6h 05m
Thu 9/104:25 pm -
Nonstop6h 50m
Deal found 8/6![Icelandair logo]()
$480
This Mytrip deal was found by Cheapflights users on 8/10. 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.
Sun 9/610:25 pm -
Nonstop6h 05m
Wed 9/167:45 pm -
Nonstop6h 40m
Deal found 8/10![Icelandair logo]()
$460
This Justfly.com deal was found by Cheapflights users on 8/9. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/610:25 pm -
Nonstop6h 05m
Fri 9/117:45 pm -
Nonstop6h 40m
Deal found 8/9![Icelandair logo]()
$469
This Icelandair deal was found by Cheapflights users on 8/7. 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.
Sun 9/610:25 pm -
Nonstop6h 05m
Thu 9/174:25 pm -
Nonstop6h 50m
Deal found 8/7![Icelandair logo]()
$481
This Mytrip deal was found by Cheapflights users on 8/7. 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.
Sun 9/2010:25 pm -
Nonstop6h 05m
Thu 9/244:25 pm -
Nonstop6h 50m
Deal found 8/7![Icelandair logo]()
$455
One-way flights from Chicago to Keflavik IntlSearch for one-way flight options from Chicago to Keflavik Intl. Find affordable one-way fares based on user searches. Data last updated August 11, 2026.
Search for one-way flight options from Chicago to Keflavik Intl. Find affordable one-way fares based on user searches. Data last updated August 11, 2026.
This Kiwi.com deal was found by Cheapflights users on 8/7. 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.
Sun 9/65:30 pm -
1 stop33h 10m
Deal found 8/7![WestJet logo]()
$339
This Mytrip deal was found by Cheapflights users on 8/6. 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 9/87:25 am -
3 stops19h 30m
Deal found 8/6![Air Canada logo]()
$362
This Mytrip deal was found by Cheapflights users on 8/8. 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 9/83:20 pm -
2 stops11h 35m
Deal found 8/8![Multiple Airlines logo]()
$363
This Mytrip deal was found by Cheapflights users on 8/8. 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 9/157:25 am -
3 stops19h 30m
Deal found 8/8![Air Canada logo]()
$365
This Mytrip deal was found by Cheapflights users on 8/8. 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 9/143:45 pm -
1 stop12h 00m
Deal found 8/8![Air Canada logo]()
$374
This Mytrip deal was found by Cheapflights users on 8/9. 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.
Sun 9/68:40 am -
2 stops18h 00m
Deal found 8/9![Multiple Airlines logo]()
$382
This Kiwi.com deal was found by Cheapflights users on 8/6. 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.
Tue 9/155:30 pm -
1 stop33h 10m
Deal found 8/6![WestJet logo]()
$388
This Mytrip deal was found by Cheapflights users on 8/10. 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.
Mon 8/313:15 pm -
2 stops11h 40m
Deal found 8/10![Multiple Airlines logo]()
$397
This Kiwi.com deal was found by Cheapflights users on 8/8. 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.
Wed 8/265:30 pm -
1 stop33h 10m
Deal found 8/8![WestJet logo]()
$400
This Kiwi.com deal was found by Cheapflights users on 8/9. 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.
Sun 8/3010:20 am -
2 stops17h 40m
Deal found 8/9![Multiple Airlines logo]()
$403
This Kiwi.com deal was found by Cheapflights users on 8/8. 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.
Tue 9/111:45 am -
2 stops16h 15m
Deal found 8/8![Multiple Airlines logo]()
$407
This Mytrip deal was found by Cheapflights users on 8/8. 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.
Wed 8/263:15 pm -
2 stops11h 40m
Deal found 8/8![Multiple Airlines logo]()
$417
Find flight deals from Chicago to Keflavik Intl
Discover tips and strategies to find the most affordable flight options for your journey from Chicago (CHI) to Keflavik Intl (KEF). 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 August 11, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $441 (Mytrip) |
One-way from | $339 (Kiwi.com) |
Popular in | August |
Cheapest in | January |
Average price | $804 |
Good round-trip deal | $507 or less |
Good one-way deal | $272 or less |
Cheapflights Fare Finder
Customize your flight search to find flights from Chicago 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 11, 2026.
Use the filters below to find and compare flights from Chicago to Reykjavik Keflavik Intl Airport that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
Quickest round-trip
ChicagoReykjavik
ORD Chicago O'Hare Intl - KEF Reykjavik Keflavik Intl
ORDKEF
Chicago O'Hare Intl
Fri 12/4
6:30 pm-6:45 am
Nonstop6h 15m
Reykjavik Keflavik Intl
Mon 12/7
4:30 pm-5:20 pm
Nonstop6h 50m
$467
ChicagoReykjavik
ORD Chicago O'Hare Intl - KEF Reykjavik Keflavik Intl
ORDKEF
Chicago O'Hare Intl
Fri 10/23
9:35 pm-8:50 am
Nonstop6h 15m
Reykjavik Keflavik Intl
Mon 11/2
12:00 pm-12:55 pm
Nonstop6h 55m
$516
ChicagoReykjavik
ORD Chicago O'Hare Intl - KEF Reykjavik Keflavik Intl
ORDKEF
Chicago O'Hare Intl
Wed 12/2
9:45 pm-10:00 am
Nonstop6h 15m
Reykjavik Keflavik Intl
Mon 12/7
12:00 pm-12:55 pm
Nonstop6h 55m
$516
ChicagoReykjavik
ORD Chicago O'Hare Intl - KEF Reykjavik Keflavik Intl
ORDKEF
Chicago O'Hare Intl
Mon 9/14
6:25 am-8:30 am
1 stop21h 05m
Reykjavik Keflavik Intl
Mon 9/21
10:00 am-9:00 am
1 stop28h 00m
$530
ChicagoReykjavik
ORD Chicago O'Hare Intl - KEF Reykjavik Keflavik Intl
ORDKEF
Chicago O'Hare Intl
Sat 9/5
9:39 pm-8:30 am
1 stop29h 51m
Reykjavik Keflavik Intl
Mon 9/14
10:00 am-9:53 am
1 stop28h 53m
$530
ChicagoReykjavik
ORD Chicago O'Hare Intl - KEF Reykjavik Keflavik Intl
ORDKEF
Chicago O'Hare Intl
Thu 9/10
9:39 pm-8:30 am
1 stop29h 51m
Reykjavik Keflavik Intl
Tue 9/15
10:00 am-9:00 am
1 stop28h 00m
$530
ChicagoReykjavik
ORD Chicago O'Hare Intl - KEF Reykjavik Keflavik Intl
ORDKEF
Chicago O'Hare Intl
Sun 9/6
5:56 pm-7:55 am
1 stop8h 59m
Reykjavik Keflavik Intl
Fri 9/11
12:00 pm-1:55 pm
Nonstop6h 55m
$533
ChicagoReykjavik
ORD Chicago O'Hare Intl - KEF Reykjavik Keflavik Intl
ORDKEF
Chicago O'Hare Intl
Wed 8/26
9:35 pm-8:50 am
Nonstop6h 15m
Reykjavik Keflavik Intl
Mon 8/31
9:15 am-7:51 am
1 stop27h 36m
$533
ChicagoReykjavik
MDW Chicago Midway - KEF Reykjavik Keflavik Intl
MDWKEF
Chicago Midway
Sat 8/22
1:25 pm-7:40 am
1 stop13h 15m
Reykjavik Keflavik Intl
Thu 8/27
9:30 am-6:01 pm
1 stop13h 31m
$785
ChicagoReykjavik
MDW Chicago Midway - KEF Reykjavik Keflavik Intl
MDWKEF
Chicago Midway
Sat 8/22
10:56 am-7:40 am
2 stops15h 44m
Reykjavik Keflavik Intl
Thu 8/27
9:30 am-6:33 pm
2 stops14h 03m
$790
Showing 1-10 of 38 resultsSorted by cheapest first
Compare providers for flights from Chicago to Keflavik Intl
Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Chicago to Keflavik Intl in August.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy2 stars | Trust Score*3 stars |
- Most accurate provider: When it comes to deals on Chicago-Reykjavik Keflavik Intl Airport flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Chicago-Reykjavik Keflavik Intl Airport flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Chicago-Reykjavik Keflavik Intl Airport flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Chicago-Reykjavik Keflavik Intl Airport flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Chicago-Reykjavik Keflavik Intl Airport flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.
Best time to book a flight from Chicago to Keflavik Intl
Have a flexible travel schedule? Discover the best time to fly to Keflavik Intl from Chicago with our price prediction graph.
CHI-KEF
ORD-KEF
MDW-KEF
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 Chicago to Reykjavik Keflavik Intl Airport
CHI-KEF
ORD-KEF
MDW-KEF
What is the cheapest month to book a flight from Chicago to Reykjavik Keflavik Intl Airport?
Currently, January is the cheapest month in which you can book a flight from Chicago to Reykjavik Keflavik Intl Airport (average of $484). Flying from Chicago to Reykjavik Keflavik Intl Airport in June is currently the most expensive (average of $794). 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 CHI to KEF?
Find hourly flight availability from Chicago 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 11, 2026.
Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Chicago to Reykjavik Keflavik Intl Airport as you normally would.
Weekly flight availability from Chicago to Reykjavik Keflavik Intl Airport
Explore weekly flight availability from Chicago 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 11, 2026.
The most flights from CHI to KEF are scheduled on a Monday (7 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (6 on average).
How much does it cost to fly round-trip from Chicago to Reykjavik Keflavik Intl Airport?
Airfare is below average for this route at the moment.
Chicago to Reykjavik Keflavik Intl Airport flights typically cost between $533 and $1,571 in December.The cheapest round-trip price found within the last 5 days was $441 on Icelandair (Dec 4-Dec 10).
How far ahead should I book a flight from Chicago to Reykjavik Keflavik Intl Airport?
The best time to book flights from Chicago to Reykjavik Keflavik Intl Airport is 55 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.
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 August 11, 2026.
Get a feel of what it's like to fly with United Airlines and Icelandair from Chicago to Reykjavik Keflavik Intl Airport by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Boarding
7.7
Entertainment
7.1
Food
6.7
Overall
7.4
Comfort
7.3
Crew
8.1
Reviews
1 / 20
2.0
MediocreDawn,Aug 2026
ORD - DEN
Boarding
7.7
Entertainment
7.1
Food
6.7
Overall
7.4
Comfort
7.3
Crew
8.1
Reviews
1 / 20
2.0
MediocreDawn,Aug 2026
ORD - DEN
Boarding
7.7
Entertainment
7.1
Food
6.7
Overall
7.4
Comfort
7.3
Crew
8.1
Reviews
1 / 20
2.0
MediocreDawn,Aug 2026
ORD - DEN
Related info for your journey
Find useful and relevant information for your journey from Chicago to Keflavik Intl. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Traveling to a place near Reykjavik Keflavik Intl Airport?
Book flights to Reykjavik Keflavik Intl Airport if you plan to visit one of these locationsKeflavik
Hveragerdi
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Other flights to Keflavik Intl
Explore flights to Keflavik Intl departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on August 11, 2026.
Chicago and Keflavik Intl flights
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Top 2 airlines flying from Chicago to Keflavik Intl
Discover the top 2 airlines that operate flights from Chicago 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 11, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$362 | Average$640 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$528 | Average$738 | FlexibilityNo cancel fee | On-time69% |