$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 28 — Oct 51
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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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 29, 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 29, 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 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 29, 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 29, 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 10/57:55 pm -
1 stop21h 52m
Sat 10/174:40 pm -
Nonstop7h 20m
Deal found 8/25![Icelandair logo]()
$902
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.
Tue 10/611:25 am -
1 stop15h 17m
Tue 10/136:20 am -
2 stops21h 10m
Deal found 8/25![Delta logo]()
$1,047
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
Tue 10/133:30 pm -
1 stop11h 55m
Deal found 8/25![Icelandair logo]()
$979
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 29, 2026 and is based on user searches.
Discover last-minute flight deals from Keflavik Intl to Denver. Data last updated August 29, 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]()
$932
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 8/27. 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.
Tue 9/14:50 pm -
Nonstop8h 10m
Sun 9/1312:15 pm -
1 stop13h 25m
Deal found 8/27![Multiple Airlines logo]()
$877
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
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 29, 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 29, 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 Mytrip deal was found by Cheapflights users on 8/29. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/174:55 pm -
Nonstop8h 05m
Deal found 8/29![Icelandair logo]()
$507
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 Kiwi.com deal was found by Cheapflights users on 8/29. 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 11/178:30 am -
3 stops58h 36m
Deal found 8/29![Multiple Airlines logo]()
$511
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 8/25. 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 29, 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 | $533 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 29, 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
Mon 10/5
7:55 pm-11:47 am
1 stop21h 52m
Denver Intl
Sat 10/17
4:40 pm-6:00 am
Nonstop7h 20m
$902
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
Tue 10/13
3:30 pm-9:25 am
1 stop11h 55m
$979
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
ReykjavikDenver
KEF Reykjavik Keflavik Intl - DEN Denver Intl
KEFDEN
Reykjavik Keflavik Intl
Tue 10/6
11:25 am-8:42 pm
1 stop15h 17m
Denver Intl
Tue 10/13
6:20 am-9:30 am
2 stops21h 10m
$1,047
Cheapest one-way
ReykjavikDenver
KEF Reykjavik Keflavik Intl - DEN Denver Intl
KEFDEN
Reykjavik Keflavik Intl
Tue 11/17
4:55 pm-6:00 pm
Nonstop8h 05m
$507
ReykjavikDenver
KEF Reykjavik Keflavik Intl - DEN Denver Intl
KEFDEN
Reykjavik Keflavik Intl
Tue 11/17
8:30 am-12:06 pm
3 stops58h 36m
$511
Showing 1-10 of 17 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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