$503+ 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 12/8. Fares are subject to change and may not be available on all flights or dates of travel.
KEF — DEN
Sep 26 — Oct 31
Round-trip
1 adult, Economy
We work with more than 300 partners to bring you better travel deals
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
Cheapest
Best
Last-minute
One-way
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 27, 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 27, 2026.
This Ticket deal was found by Cheapflights users on 8/27. 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.
Thu 10/224:50 pm -
Nonstop8h 10m
Wed 10/284:40 pm -
Nonstop7h 25m
Deal found 8/27![Icelandair logo]()
$625
This Gotogate deal was found by Cheapflights users on 8/24. 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.
Fri 12/44:55 pm -
Nonstop8h 05m
Tue 12/83:40 pm -
Nonstop7h 25m
Deal found 8/24![Icelandair logo]()
$652
This Flightnetwork deal was found by Cheapflights users on 8/23. 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 Flightnetwork is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/2410:45 am -
Nonstop7h 55m
Sun 8/308:10 pm -
Nonstop7h 15m
Deal found 8/23![Icelandair logo]()
$665
This Super.com deal was found by Cheapflights users on 8/23. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/214:55 pm -
Nonstop8h 05m
Tue 1/53:40 pm -
Nonstop7h 25m
Deal found 8/23![Icelandair logo]()
$682
This Kiwi.com deal was found by Cheapflights users on 8/25. 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 10/74:50 pm -
Nonstop8h 10m
Sat 10/174:40 pm -
Nonstop7h 20m
Deal found 8/25![Icelandair logo]()
$690
This Ticket deal was found by Cheapflights users on 8/26. 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.
Sat 10/104:50 pm -
Nonstop8h 10m
Sat 10/174:40 pm -
Nonstop7h 20m
Deal found 8/26![Icelandair logo]()
$695
This Icelandair deal was found by Cheapflights users on 8/26. 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 8/264:50 pm -
Nonstop8h 10m
Sun 8/304:40 pm -
Nonstop7h 20m
Deal found 8/26![Icelandair logo]()
$698
This Kiwi.com deal was found by Cheapflights users on 8/25. 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 10/74:50 pm -
Nonstop8h 10m
Mon 10/124:40 pm -
Nonstop7h 20m
Deal found 8/25![Icelandair logo]()
$713
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 27, 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 27, 2026.
This Ticket deal was found by Cheapflights users on 8/27. 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.
Thu 10/224:50 pm -
Nonstop8h 10m
Wed 10/287:07 am -
1 stop17h 08m
Deal found 8/27![Multiple Airlines logo]()
$766
This Gotogate deal was found by Cheapflights users on 8/27. 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.
Sun 10/114:50 pm -
Nonstop8h 10m
Sun 10/184:40 pm -
Nonstop7h 20m
Deal found 8/27![Icelandair logo]()
$807
This Delta deal was found by Cheapflights users on 8/25. 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.
Wed 10/711:25 am -
1 stop29h 39m
Tue 10/1310:30 am -
2 stops17h 00m
Deal found 8/25![Delta logo]()
$1,044
This Icelandair deal was found by Cheapflights users on 8/26. 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 10/107:50 pm -
1 stop19h 45m
Sat 10/174:40 pm -
Nonstop7h 20m
Deal found 8/26![Multiple Airlines logo]()
$865
This Icelandair deal was found by Cheapflights users on 8/25. 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 10/54:50 pm -
Nonstop8h 10m
Fri 10/164:40 pm -
Nonstop7h 20m
Deal found 8/25![Icelandair logo]()
$937
This Icelandair deal was found by Cheapflights users on 8/24. 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 12/44:45 pm -
1 stop22h 15m
Tue 12/81:15 pm -
1 stop10h 15m
Deal found 8/24![Multiple Airlines logo]()
$866
This Gotogate deal was found by Cheapflights users on 8/23. 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 10/74:50 pm -
Nonstop8h 10m
Wed 10/1411:25 am -
2 stops15h 20m
Deal found 8/23![Multiple Airlines logo]()
$910
This Icelandair deal was found by Cheapflights users on 8/24. 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 10/85:00 pm -
1 stop21h 10m
Thu 10/153:25 pm -
1 stop11h 45m
Deal found 8/24![Multiple Airlines logo]()
$936
This Icelandair deal was found by Cheapflights users on 8/23. 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 9/224:45 pm -
1 stop21h 25m
Tue 9/294:40 pm -
Nonstop7h 20m
Deal found 8/23![Multiple Airlines logo]()
$943
This Priceline deal was found by Cheapflights users on 8/27. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/114:50 pm -
Nonstop8h 10m
Sun 10/187:50 pm -
2 stops30h 55m
Deal found 8/27![Multiple Airlines logo]()
$1,025
Last-minute flights from Keflavik Intl to DenverDiscover last-minute flight deals from Keflavik Intl to Denver. Data last updated August 27, 2026 and is based on user searches.
Discover last-minute flight deals from Keflavik Intl to Denver. Data last updated August 27, 2026 and is based on user searches.
This Gotogate deal was found by Cheapflights users on 8/25. 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.
Sat 8/2910:45 am -
Nonstop7h 55m
Tue 9/84:40 pm -
Nonstop7h 20m
Deal found 8/25![Icelandair logo]()
$753
This Flysmarter deal was found by Cheapflights users on 8/25. 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.
Sat 8/2910:45 am -
1 stop13h 47m
Tue 9/84:40 pm -
Nonstop7h 20m
Deal found 8/25![Multiple Airlines logo]()
$866
This Ticket deal was found by Cheapflights users on 8/25. 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.
Sun 8/3010:45 am -
Nonstop7h 55m
Tue 9/86:05 pm -
1 stop32h 40m
Deal found 8/25![Multiple Airlines logo]()
$897
This oojo deal was found by Cheapflights users on 8/25. 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 8/3010:45 am -
Nonstop7h 55m
Tue 9/811:37 pm -
1 stop26h 33m
Deal found 8/25![Icelandair logo]()
$901
This Gotogate deal was found by Cheapflights users on 8/24. 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.
Sun 8/3010:45 am -
Nonstop7h 55m
Mon 9/79:40 am -
2 stops17h 05m
Deal found 8/24![Multiple Airlines logo]()
$921
This Trip.com deal was found by Cheapflights users on 8/26. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/3112:45 pm -
1 stop16h 31m
Fri 9/43:00 pm -
1 stop12h 00m
Deal found 8/26![Alaska Airlines logo]()
$869
This Gotogate deal was found by Cheapflights users on 8/25. 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 9/34:50 pm -
Nonstop8h 10m
Fri 9/1112:15 pm -
1 stop13h 25m
Deal found 8/25![Multiple Airlines logo]()
$895
This Icelandair deal was found by Cheapflights users on 8/23. 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 9/224:45 pm -
1 stop21h 25m
Tue 9/294:40 pm -
Nonstop7h 20m
Deal found 8/23![Multiple Airlines logo]()
$943
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 27, 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 27, 2026.
This Kiwi.com deal was found by Cheapflights users on 8/24. 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 12/811:05 am -
2 stops42h 55m
Deal found 8/24![Multiple Airlines logo]()
$503
This Gotogate deal was found by Cheapflights users on 8/24. 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.
Tue 12/84:55 pm -
Nonstop8h 05m
Deal found 8/24![Icelandair logo]()
$504
This Super.com deal was found by Cheapflights users on 8/24. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/44:55 pm -
Nonstop8h 05m
Deal found 8/24![Icelandair logo]()
$510
This Flightnetwork deal was found by Cheapflights users on 8/25. 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 Flightnetwork is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/1010:45 am -
Nonstop7h 55m
Deal found 8/25![Icelandair logo]()
$516
This Mytrip deal was found by Cheapflights users on 8/23. 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.
Sat 9/54:50 pm -
Nonstop8h 10m
Deal found 8/23![Icelandair logo]()
$518
This Mytrip deal was found by Cheapflights users on 8/25. 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 10/74:50 pm -
Nonstop8h 10m
Deal found 8/25![Icelandair logo]()
$524
This Booking.com deal was found by Cheapflights users on 8/27. 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.
Fri 9/1110:45 am -
Nonstop7h 55m
Deal found 8/27![Icelandair logo]()
$525
This Kiwi.com deal was found by Cheapflights users on 8/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/54:50 pm -
Nonstop8h 10m
Deal found 8/25![Icelandair logo]()
$526
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 27, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $625 (Ticket) |
One-way from | $503 (Kiwi.com) |
Good one-way deal | $525 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 27, 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
ReykjavikDenver
KEF Reykjavik Keflavik Intl - DEN Denver Intl
KEFDEN
Reykjavik Keflavik Intl
Thu 10/22
4:50 pm-7:00 pm
Nonstop8h 10m
Denver Intl
Wed 10/28
7:07 am-6:15 am
1 stop17h 08m
$766
Quickest round-trip
ReykjavikDenver
KEF Reykjavik Keflavik Intl - DEN Denver Intl
KEFDEN
Reykjavik Keflavik Intl
Sun 10/11
4:50 pm-7:00 pm
Nonstop8h 10m
Denver Intl
Sun 10/18
4:40 pm-6:00 am
Nonstop7h 20m
$807
ReykjavikDenver
KEF Reykjavik Keflavik Intl - DEN Denver Intl
KEFDEN
Reykjavik Keflavik Intl
Sat 10/10
7:50 pm-9:35 am
1 stop19h 45m
Denver Intl
Sat 10/17
4:40 pm-6:00 am
Nonstop7h 20m
$865
ReykjavikDenver
KEF Reykjavik Keflavik Intl - DEN Denver Intl
KEFDEN
Reykjavik Keflavik Intl
Fri 12/4
4:45 pm-8:00 am
1 stop22h 15m
Denver Intl
Tue 12/8
1:15 pm-6:30 am
1 stop10h 15m
$866
ReykjavikDenver
KEF Reykjavik Keflavik Intl - DEN Denver Intl
KEFDEN
Reykjavik Keflavik Intl
Wed 10/7
4:50 pm-7:00 pm
Nonstop8h 10m
Denver Intl
Wed 10/14
11:25 am-8:45 am
2 stops15h 20m
$910
ReykjavikDenver
KEF Reykjavik Keflavik Intl - DEN Denver Intl
KEFDEN
Reykjavik Keflavik Intl
Thu 10/8
5:00 pm-8:10 am
1 stop21h 10m
Denver Intl
Thu 10/15
3:25 pm-9:10 am
1 stop11h 45m
$936
ReykjavikDenver
KEF Reykjavik Keflavik Intl - DEN Denver Intl
KEFDEN
Reykjavik Keflavik Intl
Mon 10/5
4:50 pm-7:00 pm
Nonstop8h 10m
Denver Intl
Fri 10/16
4:40 pm-6:00 am
Nonstop7h 20m
$937
ReykjavikDenver
KEF Reykjavik Keflavik Intl - DEN Denver Intl
KEFDEN
Reykjavik Keflavik Intl
Tue 9/22
4:45 pm-8:10 am
1 stop21h 25m
Denver Intl
Tue 9/29
4:40 pm-6:00 am
Nonstop7h 20m
$943
ReykjavikDenver
KEF Reykjavik Keflavik Intl - DEN Denver Intl
KEFDEN
Reykjavik Keflavik Intl
Sun 10/11
4:50 pm-7:00 pm
Nonstop8h 10m
Denver Intl
Sun 10/18
7:50 pm-8:45 am
2 stops30h 55m
$1,025
ReykjavikDenver
KEF Reykjavik Keflavik Intl - DEN Denver Intl
KEFDEN
Reykjavik Keflavik Intl
Wed 10/7
11:25 am-11:04 am
1 stop29h 39m
Denver Intl
Tue 10/13
10:30 am-9:30 am
2 stops17h 00m
$1,044
Showing 1-10 of 20 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
Prices
Airlines
Related info for your journey
Find useful and relevant information for your journey from Keflavik Intl to Denver. 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 Denver?
Book flights to Denver if you plan to visit one of these locationsThornton
Westminster
Black Hawk
Lakewood
Centennial
Broomfield
Golden
Wheat Ridge
Silverthorne
Central City
Fort Morgan
Greeley
Cripple Creek
Winter Park
Limon
Manitou Springs
Frisco
Englewood
Glendale
Evergreen
Browse thousands of different options on Cheapflights for your next trip
Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.
Complete your trip
Denver flight routes
Flights by cabin class
Other flight options
Other flights from Keflavik Intl
Popular flights