$410+ Cheap flights from Chicago (CHI) to Keflavik Intl (KEF)
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 11/25. Fares are subject to change and may not be available on all flights or dates of travel.
CHI — KEF
Nov 3 — Nov 101
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 53 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 October 4, 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 October 4, 2026.
This oojo deal was found by Cheapflights users on 10/2. 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.
Mon 10/267:30 pm -
Nonstop6h 15m
Mon 11/24:30 pm -
Nonstop6h 50m
Deal found 10/2![Icelandair logo]()
$418
This Booking.com deal was found by Cheapflights users on 9/30. 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.
Sun 11/156:30 pm -
Nonstop6h 15m
Mon 11/234:30 pm -
Nonstop6h 50m
Deal found 9/30![Icelandair logo]()
$441
This Cheapflightsfares deal was found by Cheapflights users on 9/28. 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.
Sun 12/66:30 pm -
Nonstop6h 15m
Mon 12/144:30 pm -
Nonstop6h 50m
Deal found 9/28![Icelandair logo]()
$444
This oojo deal was found by Cheapflights users on 10/2. 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 10/1810:25 pm -
Nonstop6h 05m
Thu 10/224:25 pm -
Nonstop6h 50m
Deal found 10/2![Icelandair logo]()
$458
This Kiwi.com deal was found by Cheapflights users on 10/1. 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 10/277:30 pm -
Nonstop6h 15m
Mon 11/24:30 pm -
Nonstop6h 50m
Deal found 10/1![Icelandair logo]()
$465
This Kiwi.com deal was found by Cheapflights users on 10/1. 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 11/296:30 pm -
Nonstop6h 15m
Thu 12/34:30 pm -
Nonstop6h 50m
Deal found 10/1![Icelandair logo]()
$466
This Kiwi.com deal was found by Cheapflights users on 10/2. 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 11/86:30 pm -
Nonstop6h 15m
Thu 11/124:30 pm -
Nonstop6h 50m
Deal found 10/2![Icelandair logo]()
$467
This Icelandair deal was found by Cheapflights users on 9/29. 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 Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/267:30 pm -
Nonstop6h 15m
Thu 11/194:30 pm -
Nonstop6h 50m
Deal found 9/29![Icelandair logo]()
$468
This Delta deal was found by Cheapflights users on 10/1. 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 10/17:01 pm -
2 stops30h 59m
Mon 10/59:30 am -
1 stop28h 14m
Deal found 10/1![Delta logo]()
$764
This Delta deal was found by Cheapflights users on 10/2. 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 10/1711:33 am -
2 stops16h 57m
Sat 10/2411:25 am -
2 stops16h 08m
Deal found 10/2![Delta logo]()
$777
This Icelandair deal was found by Cheapflights users on 9/29. 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 Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/43:45 pm -
1 stop8h 50m
Sun 11/84:45 pm -
1 stop20h 15m
Deal found 9/29![Multiple Airlines logo]()
$819
This Icelandair deal was found by Cheapflights users on 10/2. 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 11/273:10 pm -
1 stop9h 25m
Fri 12/44:45 pm -
1 stop20h 10m
Deal found 10/2![Multiple Airlines logo]()
$820
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 October 4, 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 October 4, 2026.
This Icelandair deal was found by Cheapflights users on 10/3. 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.
Tue 11/171:00 pm -
1 stop11h 05m
Tue 11/244:30 pm -
Nonstop6h 50m
Deal found 10/3![Multiple Airlines logo]()
$664
This United Airlines deal was found by Cheapflights users on 10/2. 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 10/2![United Airlines logo]()
$728
This Finnair deal was found by Cheapflights users on 10/2. 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 Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/2910:25 pm -
1 stop29h 50m
Thu 11/56:00 pm -
2 stops31h 30m
Deal found 10/2![Finnair logo]()
$733
This Scandinavian Airlines deal was found by Cheapflights users on 9/29. 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 Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/67:10 pm -
2 stops34h 30m
Mon 11/96:05 pm -
1 stop28h 40m
Deal found 9/29![Scandinavian Airlines logo]()
$750
This Delta deal was found by Cheapflights users on 10/2. 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 10/1711:33 am -
2 stops16h 57m
Sat 10/2411:25 am -
2 stops16h 08m
Deal found 10/2![Delta logo]()
$777
This Finnair deal was found by Cheapflights users on 9/30. 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 Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/29:35 pm -
2 stops29h 40m
Mon 11/910:00 am -
2 stops33h 45m
Deal found 9/30![Finnair logo]()
$751
This United Airlines deal was found by Cheapflights users on 9/28. 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
Sat 10/3112:00 pm -
Nonstop6h 55m
Deal found 9/28![United Airlines logo]()
$758
This Scandinavian Airlines deal was found by Cheapflights users on 10/1. 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 Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/127:10 pm -
2 stops58h 30m
Mon 11/166:05 pm -
1 stop28h 40m
Deal found 10/1![Scandinavian Airlines logo]()
$764
This United deal was found by Cheapflights users on 10/2. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/79:35 pm -
Nonstop6h 15m
Tue 10/134:10 pm -
1 stop28h 45m
Deal found 10/2![Multiple Airlines logo]()
$764
This Icelandair deal was found by Cheapflights users on 9/29. 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 Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/273:10 pm -
1 stop9h 25m
Fri 12/44:45 pm -
1 stop20h 10m
Deal found 9/29![Multiple Airlines logo]()
$819
This Icelandair deal was found by Cheapflights users on 10/1. 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 10/242:40 pm -
1 stop10h 50m
Sat 10/315:00 pm -
1 stop21h 40m
Deal found 10/1![Multiple Airlines logo]()
$870
This Icelandair deal was found by Cheapflights users on 9/28. 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 12/63:10 pm -
1 stop9h 25m
Mon 12/145:00 pm -
1 stop10h 25m
Deal found 9/28![Multiple Airlines logo]()
$884
This Icelandair deal was found by Cheapflights users on 9/28. 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 9/28![Multiple Airlines logo]()
$899
This Icelandair deal was found by Cheapflights users on 10/3. 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.
Tue 11/1712:50 pm -
1 stop11h 40m
Tue 11/244:55 pm -
1 stop13h 20m
Deal found 10/3![Multiple Airlines logo]()
$904
This Icelandair deal was found by Cheapflights users on 10/1. 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.
Tue 12/812:50 pm -
1 stop11h 40m
Sat 12/124:55 pm -
1 stop23h 35m
Deal found 10/1![Multiple Airlines logo]()
$915
This Icelandair deal was found by Cheapflights users on 9/30. 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 11/214:55 pm -
1 stop13h 35m
Deal found 9/30![Multiple Airlines logo]()
$934
This Icelandair deal was found by Cheapflights users on 10/3. 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.
Tue 11/1012:50 pm -
1 stop11h 40m
Mon 11/164:55 pm -
1 stop23h 35m
Deal found 10/3![Multiple Airlines logo]()
$965
This Icelandair deal was found by Cheapflights users on 10/1. 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 11/1210:40 am -
1 stop13h 25m
Mon 11/164:55 pm -
1 stop23h 35m
Deal found 10/1![Multiple Airlines logo]()
$980
Last-minute flights from Chicago to Keflavik IntlDiscover last-minute flight deals from Chicago to Keflavik Intl. Data last updated October 4, 2026 and is based on user searches.
Discover last-minute flight deals from Chicago to Keflavik Intl. Data last updated October 4, 2026 and is based on user searches.
This Delta deal was found by Cheapflights users on 10/1. 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 10/17:01 pm -
2 stops30h 59m
Mon 10/59:30 am -
1 stop28h 14m
Deal found 10/1![Delta logo]()
$764
This Delta deal was found by Cheapflights users on 10/2. 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 10/1711:33 am -
2 stops16h 57m
Sat 10/2411:25 am -
2 stops16h 08m
Deal found 10/2![Delta logo]()
$777
This oojo deal was found by Cheapflights users on 10/2. 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 10/1810:25 pm -
Nonstop6h 05m
Thu 10/224:25 pm -
Nonstop6h 50m
Deal found 10/2![Icelandair logo]()
$458
This oojo deal was found by Cheapflights users on 10/2. 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.
Mon 10/267:30 pm -
Nonstop6h 15m
Mon 11/24:30 pm -
Nonstop6h 50m
Deal found 10/2![Icelandair logo]()
$418
This Icelandair deal was found by Cheapflights users on 9/29. 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 Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/267:30 pm -
Nonstop6h 15m
Thu 11/194:30 pm -
Nonstop6h 50m
Deal found 9/29![Icelandair logo]()
$468
This FlightHub deal was found by Cheapflights users on 9/29. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/277:30 pm -
Nonstop6h 15m
Thu 11/194:30 pm -
Nonstop6h 50m
Deal found 9/29![Icelandair logo]()
$456
This Kiwi.com deal was found by Cheapflights users on 10/1. 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 10/277:30 pm -
Nonstop6h 15m
Mon 11/24:30 pm -
Nonstop6h 50m
Deal found 10/1![Icelandair logo]()
$465
This Icelandair deal was found by Cheapflights users on 9/29. 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 Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/43:45 pm -
1 stop8h 50m
Sun 11/84:45 pm -
1 stop20h 15m
Deal found 9/29![Multiple Airlines logo]()
$819
This Kiwi.com deal was found by Cheapflights users on 10/2. 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 11/86:30 pm -
Nonstop6h 15m
Thu 11/124:30 pm -
Nonstop6h 50m
Deal found 10/2![Icelandair logo]()
$467
This Booking.com deal was found by Cheapflights users on 9/30. 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.
Sun 11/156:30 pm -
Nonstop6h 15m
Mon 11/234:30 pm -
Nonstop6h 50m
Deal found 9/30![Icelandair logo]()
$441
This Flysmarter deal was found by Cheapflights users on 10/2. 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 Flysmarter is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/166:30 pm -
Nonstop6h 15m
Mon 11/234:30 pm -
Nonstop6h 50m
Deal found 10/2![Icelandair logo]()
$477
This Kiwi.com deal was found by Cheapflights users on 10/1. 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 11/296:30 pm -
Nonstop6h 15m
Thu 12/34:30 pm -
Nonstop6h 50m
Deal found 10/1![Icelandair logo]()
$466
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 October 4, 2026.
Search for one-way flight options from Chicago to Keflavik Intl. Find affordable one-way fares based on user searches. Data last updated October 4, 2026.
This Kiwi.com deal was found by Cheapflights users on 10/1. 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 11/258:05 pm -
2 stops55h 45m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/1![Multiple Airlines logo]()
$410
This Kiwi.com deal was found by Cheapflights users on 10/1. 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 11/233:55 pm -
2 stops35h 15m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/1![Multiple Airlines logo]()
$412
This Kiwi.com deal was found by Cheapflights users on 10/1. 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 11/228:10 pm -
2 stops55h 00m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/1![Multiple Airlines logo]()
$417
This Kiwi.com deal was found by Cheapflights users on 9/29. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/309:50 pm -
2 stops38h 00m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/29![Multiple Airlines logo]()
$418
This Kiwi.com deal was found by Cheapflights users on 9/28. 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.
Fri 11/138:10 pm -
3 stops56h 55m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/28![Multiple Airlines logo]()
$423
This Kiwi.com deal was found by Cheapflights users on 9/29. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/299:50 pm -
2 stops39h 40m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/29![Multiple Airlines logo]()
$425
This Kiwi.com deal was found by Cheapflights users on 10/3. 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 11/117:00 pm -
3 stops42h 00m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/3![Multiple Airlines logo]()
$437
This oojo deal was found by Cheapflights users on 9/29. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/291:00 pm -
1 stop12h 05m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/29![Icelandair logo]()
$446
This Kiwi.com deal was found by Cheapflights users on 9/28. 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.
Fri 11/133:16 pm -
2 stops32h 49m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/28![Multiple Airlines logo]()
$540
This Delta deal was found by Cheapflights users on 9/30. 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 10/1210:12 am -
2 stops18h 18m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/30![Delta logo]()
$541
This Kiwi.com deal was found by Cheapflights users on 10/1. 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.
Fri 11/208:42 pm -
2 stops27h 23m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/1![Multiple Airlines logo]()
$543
This Kiwi.com deal was found by Cheapflights users on 10/1. 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 11/258:42 pm -
2 stops27h 23m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/1![Multiple Airlines logo]()
$565
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 October 4, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $418 (oojo) |
One-way from | $410 (Kiwi.com) |
Popular in | June |
Cheapest in | January |
Average price | $681 |
Good round-trip deal | $501 or less |
Good one-way deal | $283 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 7,457,451 searches. Data last updated October 4, 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
ChicagoReykjavik
ORD Chicago O'Hare Intl - KEF Reykjavik Keflavik Intl
ORDKEF
Chicago O'Hare Intl
Sun 11/22
8:10 pm-9:10 am
2 stops55h 00m
Reykjavik Keflavik Intl
Wed 12/31
12:00 am-6:00 pm
Nonstop0h 00m
$417
ChicagoReykjavik
ORD Chicago O'Hare Intl - KEF Reykjavik Keflavik Intl
ORDKEF
Chicago O'Hare Intl
Fri 11/13
8:10 pm-11:05 am
3 stops56h 55m
Reykjavik Keflavik Intl
Wed 12/31
12:00 am-6:00 pm
Nonstop0h 00m
$423
ChicagoReykjavik
ORD Chicago O'Hare Intl - KEF Reykjavik Keflavik Intl
ORDKEF
Chicago O'Hare Intl
Sat 11/14
1:00 pm-6:05 am
1 stop11h 05m
Reykjavik Keflavik Intl
Wed 12/31
12:00 am-6:00 pm
Nonstop0h 00m
$446
ChicagoReykjavik
ORD Chicago O'Hare Intl - KEF Reykjavik Keflavik Intl
ORDKEF
Chicago O'Hare Intl
Sat 11/14
3:55 pm-8:55 am
2 stops35h 00m
Reykjavik Keflavik Intl
Wed 12/31
12:00 am-6:00 pm
Nonstop0h 00m
$453
ChicagoReykjavik
ORD Chicago O'Hare Intl - KEF Reykjavik Keflavik Intl
ORDKEF
Chicago O'Hare Intl
Tue 10/20
9:55 am-7:55 am
2 stops17h 00m
Reykjavik Keflavik Intl
Wed 12/31
12:00 am-6:00 pm
Nonstop0h 00m
$516
ChicagoReykjavik
ORD Chicago O'Hare Intl - KEF Reykjavik Keflavik Intl
ORDKEF
Chicago O'Hare Intl
Thu 11/26
6:20 pm-5:35 pm
3 stops41h 15m
Reykjavik Keflavik Intl
Wed 12/31
12:00 am-6:00 pm
Nonstop0h 00m
$517
ChicagoReykjavik
ORD Chicago O'Hare Intl - KEF Reykjavik Keflavik Intl
ORDKEF
Chicago O'Hare Intl
Wed 10/28
5:20 pm-10:15 am
3 stops59h 55m
Reykjavik Keflavik Intl
Wed 12/31
12:00 am-6:00 pm
Nonstop0h 00m
$522
ChicagoReykjavik
MDW Chicago Midway - KEF Reykjavik Keflavik Intl
MDWKEF
Chicago Midway
Mon 10/12
10:12 am-9:30 am
2 stops18h 18m
Reykjavik Keflavik Intl
Wed 12/31
12:00 am-6:00 pm
Nonstop0h 00m
$541
ChicagoReykjavik
ORD Chicago O'Hare Intl - KEF Reykjavik Keflavik Intl
ORDKEF
Chicago O'Hare Intl
Mon 10/12
10:30 am-9:30 am
1 stop18h 00m
Reykjavik Keflavik Intl
Wed 12/31
12:00 am-6:00 pm
Nonstop0h 00m
$541
ChicagoReykjavik
ORD Chicago O'Hare Intl - KEF Reykjavik Keflavik Intl
ORDKEF
Chicago O'Hare Intl
Fri 10/23
9:59 am-9:30 am
2 stops18h 31m
Reykjavik Keflavik Intl
Wed 12/31
12:00 am-6:00 pm
Nonstop0h 00m
$541
Showing 1-10 of 33 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 October.
| 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 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 $472). Flying from Chicago to Reykjavik Keflavik Intl Airport in June is currently the most expensive (average of $796). 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 October 4, 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.
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 $427 and $876 in October.The cheapest round-trip price found within the last 5 days was $418 on Icelandair (Oct 26-Nov 2).
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 44 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 October 4, 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.
Comfort
7.3
Entertainment
7.1
Food
6.7
Overall
7.4
Crew
8.1
Boarding
7.7
Reviews
1 / 20
2.0
MediocreDawn,Aug 2026
ORD - DEN
Comfort
7.3
Entertainment
7.1
Food
6.7
Overall
7.4
Crew
8.1
Boarding
7.7
Reviews
1 / 20
2.0
MediocreDawn,Aug 2026
ORD - DEN
Comfort
7.3
Entertainment
7.1
Food
6.7
Overall
7.4
Crew
8.1
Boarding
7.7
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 October 4, 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 7,457,451 searches. Data last updated October 4, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$381 | Average$665 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$516 | Average$744 | FlexibilityNo cancel fee | On-time69% |