$404+ Cheap flights from Keflavik Intl (KEF) to Denver (DEN)
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 9/2. Fares are subject to change and may not be available on all flights or dates of travel.
KEF — DEN
Sep 20 — Sep 271
Round-trip
1 adult, Economy
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Find cheap flights from Keflavik Intl to Denver with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from Keflavik Intl to Denver
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Cheapest flights from Keflavik Intl to DenverExplore the most affordable flight options available from Keflavik Intl to Denver. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 21, 2026.
Explore the most affordable flight options available from Keflavik Intl to Denver. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 21, 2026.
This Gotogate deal was found by Cheapflights users on 8/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/214:50 pm -
Nonstop8h 10m
Mon 10/264:40 pm -
Nonstop7h 25m
Deal found 8/20![Icelandair logo]()
$648
This Gotogate deal was found by Cheapflights users on 8/18. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/2010:45 am -
Nonstop7h 55m
Thu 8/274:40 pm -
Nonstop7h 20m
Deal found 8/18![Icelandair logo]()
$657
This Kiwi.com deal was found by Cheapflights users on 8/19. 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.
Thu 11/124:55 pm -
Nonstop8h 05m
Tue 11/173:40 pm -
Nonstop7h 25m
Deal found 8/19![Icelandair logo]()
$674
This Icelandair deal was found by Cheapflights users on 8/19. 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 11/84:55 pm -
Nonstop8h 05m
Mon 11/163:40 pm -
Nonstop7h 25m
Deal found 8/19![Icelandair logo]()
$676
This Icelandair deal was found by Cheapflights users on 8/19. 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 11/94:55 pm -
Nonstop8h 05m
Mon 11/163:40 pm -
Nonstop7h 25m
Deal found 8/19![Icelandair logo]()
$687
This Kiwi.com deal was found by Cheapflights users on 8/19. 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 11/84:55 pm -
Nonstop8h 05m
Sun 11/223:40 pm -
Nonstop7h 25m
Deal found 8/19![Icelandair logo]()
$725
This Icelandair deal was found by Cheapflights users on 8/19. 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 11/104:50 pm -
Nonstop9h 10m
Sun 11/223:40 pm -
Nonstop7h 25m
Deal found 8/19![Icelandair logo]()
$727
This Icelandair deal was found by Cheapflights users on 8/19. 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 11/94:55 pm -
Nonstop8h 05m
Sun 11/223:40 pm -
Nonstop7h 25m
Deal found 8/19![Icelandair logo]()
$738
This Kiwi.com deal was found by Cheapflights users on 8/19. 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 11/84:55 pm -
Nonstop8h 05m
Fri 11/203:40 pm -
Nonstop7h 25m
Deal found 8/19![Icelandair logo]()
$740
This Icelandair deal was found by Cheapflights users on 8/19. 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 11/104:50 pm -
Nonstop9h 10m
Fri 11/203:40 pm -
Nonstop7h 25m
Deal found 8/19![Icelandair logo]()
$742
This Kiwi.com deal was found by Cheapflights users on 8/16. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/24:50 pm -
Nonstop8h 10m
Wed 9/98:10 pm -
Nonstop7h 15m
Deal found 8/16![Icelandair logo]()
$747
Best flights from Keflavik Intl to DenverDiscover carefully curated flight deals from Keflavik Intl to Denver that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 21, 2026.
Discover carefully curated flight deals from Keflavik Intl to Denver that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 21, 2026.
This Icelandair deal was found by Cheapflights users on 8/19. 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 11/84:55 pm -
Nonstop8h 05m
Wed 11/183:40 pm -
Nonstop7h 25m
Deal found 8/19![Icelandair logo]()
$676
This Icelandair deal was found by Cheapflights users on 8/20. 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 10/214:50 pm -
Nonstop8h 10m
Mon 10/2611:25 am -
2 stops13h 05m
Deal found 8/20![Multiple Airlines logo]()
$829
This Delta deal was found by Cheapflights users on 8/18. 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.
Fri 10/29:30 am -
1 stop20h 05m
Thu 10/812:59 am -
2 stops26h 31m
Deal found 8/18![Delta logo]()
$1,047
This Icelandair deal was found by Cheapflights users on 8/19. 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 11/134:55 pm -
Nonstop8h 05m
Sat 11/213:40 pm -
Nonstop7h 25m
Deal found 8/19![Icelandair logo]()
$790
This Icelandair deal was found by Cheapflights users on 8/16. 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 Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/95:00 pm -
1 stop12h 55m
Fri 10/162:00 pm -
1 stop10h 35m
Deal found 8/16![Multiple Airlines logo]()
$871
This Icelandair deal was found by Cheapflights users on 8/19. 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 11/124:55 pm -
Nonstop8h 05m
Thu 11/197:03 am -
1 stop16h 12m
Deal found 8/19![Icelandair logo]()
$879
This Kiwi.com deal was found by Cheapflights users on 8/16. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/145:10 pm -
1 stop11h 25m
Mon 9/211:53 pm -
1 stop12h 47m
Deal found 8/16![Multiple Airlines logo]()
$957
This Icelandair deal was found by Cheapflights users on 8/19. 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 11/84:55 pm -
Nonstop8h 05m
Fri 11/209:55 pm -
1 stop25h 20m
Deal found 8/19![Icelandair logo]()
$963
This Icelandair deal was found by Cheapflights users on 8/16. 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 Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/207:50 pm -
1 stop19h 00m
Sat 9/263:40 pm -
1 stop8h 55m
Deal found 8/16![Multiple Airlines logo]()
$964
This Icelandair deal was found by Cheapflights users on 8/19. 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 11/95:00 pm -
1 stop27h 58m
Sat 11/213:40 pm -
Nonstop7h 25m
Deal found 8/19![Icelandair logo]()
$999
Last-minute flights from Keflavik Intl to DenverDiscover last-minute flight deals from Keflavik Intl to Denver. Data last updated August 21, 2026 and is based on user searches.
Discover last-minute flight deals from Keflavik Intl to Denver. Data last updated August 21, 2026 and is based on user searches.
This Gotogate deal was found by Cheapflights users on 8/18. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/2010:45 am -
Nonstop7h 55m
Thu 8/274:40 pm -
Nonstop7h 20m
Deal found 8/18![Icelandair logo]()
$657
This Icelandair deal was found by Cheapflights users on 8/17. 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 Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/2010:45 am -
Nonstop7h 55m
Thu 8/273:40 pm -
1 stop11h 30m
Deal found 8/17![Multiple Airlines logo]()
$804
This Vliegwinkel deal was found by Cheapflights users on 8/17. 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 Vliegwinkel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/2012:45 pm -
1 stop16h 31m
Thu 8/2712:02 pm -
1 stop14h 58m
Deal found 8/17![Alaska Airlines logo]()
$811
This Kiwi.com deal was found by Cheapflights users on 8/16. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/24:50 pm -
Nonstop8h 10m
Wed 9/98:10 pm -
Nonstop7h 15m
Deal found 8/16![Icelandair logo]()
$747
This Mytrip deal was found by Cheapflights users on 8/16. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/29:00 am -
3 stops20h 52m
Wed 9/911:35 am -
1 stop15h 10m
Deal found 8/16![Multiple Airlines logo]()
$775
This Kiwi.com deal was found by Cheapflights users on 8/18. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/224:45 pm -
1 stop21h 25m
Sat 9/2610:38 am -
1 stop13h 57m
Deal found 8/18![Multiple Airlines logo]()
$777
One-way flights from Keflavik Intl to DenverSearch for one-way flight options from Keflavik Intl to Denver. Find affordable one-way fares based on user searches. Data last updated August 21, 2026.
Search for one-way flight options from Keflavik Intl to Denver. Find affordable one-way fares based on user searches. Data last updated August 21, 2026.
This Kiwi.com deal was found by Cheapflights users on 8/17. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/29:00 am -
1 stop32h 20m
Deal found 8/17![WestJet logo]()
$404
This Kiwi.com deal was found by Cheapflights users on 8/17. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/39:00 am -
1 stop32h 20m
Deal found 8/17![WestJet logo]()
$408
This Kiwi.com deal was found by Cheapflights users on 8/20. 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.
Thu 10/2210:35 am -
3 stops51h 25m
Deal found 8/20![Multiple Airlines logo]()
$434
This Kiwi.com deal was found by Cheapflights users on 8/18. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/22:20 pm -
2 stops39h 40m
Deal found 8/18![Multiple Airlines logo]()
$474
This Kiwi.com deal was found by Cheapflights users on 8/17. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/112:20 pm -
2 stops51h 03m
Deal found 8/17![Multiple Airlines logo]()
$484
This Mytrip deal was found by Cheapflights users on 8/20. 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 10/234:50 pm -
Nonstop8h 10m
Deal found 8/20![Icelandair logo]()
$495
This Cheapflightsfares deal was found by Cheapflights users on 8/17. 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.
Thu 12/34:55 pm -
Nonstop8h 05m
Deal found 8/17![Icelandair logo]()
$510
This FlightHub deal was found by Cheapflights users on 8/17. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/24:55 pm -
Nonstop8h 05m
Deal found 8/17![Icelandair logo]()
$514
This Booking.com deal was found by Cheapflights users on 8/19. 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.
Thu 8/2712:45 pm -
1 stop16h 31m
Deal found 8/19![Alaska Airlines logo]()
$516
This Gotogate deal was found by Cheapflights users on 8/19. 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.
Thu 8/2710:45 am -
Nonstop7h 55m
Deal found 8/19![Icelandair logo]()
$517
Find flight deals from Keflavik Intl to Denver
Discover tips and strategies to find the most affordable flight options for your journey from Keflavik Intl (KEF) to Denver (DEN). 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 21, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $648 (Gotogate) |
One-way from | $404 (Kiwi.com) |
Good one-way deal | $502 or less |
Cheapflights Fare Finder
Customize your flight search to find flights from Keflavik Intl to Denver 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 August 21, 2026.
Use the filters below to find and compare flights from Reykjavik Keflavik Intl Airport to Denver that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
Quickest round-trip
ReykjavikDenver
KEF Reykjavik Keflavik Intl - DEN Denver Intl
KEFDEN
Reykjavik Keflavik Intl
Sun 11/8
4:55 pm-6:00 pm
Nonstop8h 05m
Denver Intl
Wed 11/18
3:40 pm-6:05 am
Nonstop7h 25m
$676
ReykjavikDenver
KEF Reykjavik Keflavik Intl - DEN Denver Intl
KEFDEN
Reykjavik Keflavik Intl
Fri 11/13
4:55 pm-6:00 pm
Nonstop8h 05m
Denver Intl
Sat 11/21
3:40 pm-6:05 am
Nonstop7h 25m
$790
ReykjavikDenver
KEF Reykjavik Keflavik Intl - DEN Denver Intl
KEFDEN
Reykjavik Keflavik Intl
Wed 10/21
4:50 pm-7:00 pm
Nonstop8h 10m
Denver Intl
Mon 10/26
11:25 am-6:30 am
2 stops13h 05m
$829
ReykjavikDenver
KEF Reykjavik Keflavik Intl - DEN Denver Intl
KEFDEN
Reykjavik Keflavik Intl
Fri 10/9
5:00 pm-11:55 pm
1 stop12h 55m
Denver Intl
Fri 10/16
2:00 pm-6:35 am
1 stop10h 35m
$871
ReykjavikDenver
KEF Reykjavik Keflavik Intl - DEN Denver Intl
KEFDEN
Reykjavik Keflavik Intl
Thu 11/12
4:55 pm-6:00 pm
Nonstop8h 05m
Denver Intl
Thu 11/19
7:03 am-6:15 am
1 stop16h 12m
$879
ReykjavikDenver
KEF Reykjavik Keflavik Intl - DEN Denver Intl
KEFDEN
Reykjavik Keflavik Intl
Mon 9/14
5:10 pm-10:35 pm
1 stop11h 25m
Denver Intl
Mon 9/21
1:53 pm-8:40 am
1 stop12h 47m
$957
ReykjavikDenver
KEF Reykjavik Keflavik Intl - DEN Denver Intl
KEFDEN
Reykjavik Keflavik Intl
Sun 11/8
4:55 pm-6:00 pm
Nonstop8h 05m
Denver Intl
Fri 11/20
9:55 pm-6:15 am
1 stop25h 20m
$963
ReykjavikDenver
KEF Reykjavik Keflavik Intl - DEN Denver Intl
KEFDEN
Reykjavik Keflavik Intl
Sun 9/20
7:50 pm-8:50 am
1 stop19h 00m
Denver Intl
Sat 9/26
3:40 pm-6:35 am
1 stop8h 55m
$964
ReykjavikDenver
KEF Reykjavik Keflavik Intl - DEN Denver Intl
KEFDEN
Reykjavik Keflavik Intl
Mon 11/9
5:00 pm-1:58 pm
1 stop27h 58m
Denver Intl
Sat 11/21
3:40 pm-6:05 am
Nonstop7h 25m
$999
ReykjavikDenver
KEF Reykjavik Keflavik Intl - DEN Denver Intl
KEFDEN
Reykjavik Keflavik Intl
Fri 10/2
9:30 am-11:35 pm
1 stop20h 05m
Denver Intl
Thu 10/8
12:59 am-9:30 am
2 stops26h 31m
$1,047
Showing 1-10 of 21 resultsSorted by cheapest first
- Most accurate provider: When it comes to deals on Reykjavik Keflavik Intl Airport-Denver flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Reykjavik Keflavik Intl Airport-Denver flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Reykjavik Keflavik Intl Airport-Denver flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Reykjavik Keflavik Intl Airport-Denver 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 Reykjavik Keflavik Intl Airport-Denver 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 Keflavik Intl to Denver
Have a flexible travel schedule? Discover the best time to fly to Denver from Keflavik Intl with our price prediction graph.
KEF-DEN
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Cheapflights Insights
Everything you need to know about your flight from Reykjavik Keflavik Intl Airport to Denver
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