$405+ 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 9/1. Fares are subject to change and may not be available on all flights or dates of travel.
KEF — DEN
Sep 13 — Sep 201
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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Last-minute
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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 14, 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 14, 2026.
This ResecentrumGruppen deal was found by Cheapflights users on 8/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure ResecentrumGruppen is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/1110:45 am -
Nonstop7h 55m
Mon 8/174:40 pm -
Nonstop7h 20m
Deal found 8/10![Icelandair logo]()
$626
This Flysmarter deal was found by Cheapflights users on 8/14. 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.
Thu 8/2010:45 am -
Nonstop7h 55m
Thu 8/274:40 pm -
Nonstop7h 20m
Deal found 8/14![Icelandair logo]()
$657
This Icelandair deal was found by Cheapflights users on 8/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/3110:45 am -
Nonstop7h 55m
Mon 9/144:40 pm -
Nonstop7h 20m
Deal found 8/10![Icelandair logo]()
$709
This Gotogate deal was found by Cheapflights users on 8/12. 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 9/310:45 am -
Nonstop7h 55m
Sun 9/134:40 pm -
Nonstop7h 20m
Deal found 8/12![Icelandair logo]()
$712
This Kiwi.com deal was found by Cheapflights users on 8/12. 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
Sun 9/1310:47 pm -
2 stops26h 53m
Deal found 8/12![Multiple Airlines logo]()
$738
This Icelandair deal was found by Cheapflights users on 8/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/14:50 pm -
Nonstop8h 10m
Mon 9/144:40 pm -
Nonstop7h 20m
Deal found 8/10![Icelandair logo]()
$746
This Icelandair deal was found by Cheapflights users on 8/14. 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 8/14![Multiple Airlines logo]()
$802
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 14, 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 14, 2026.
This Mytrip deal was found by Cheapflights users on 8/12. 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.
Thu 9/39:00 am -
3 stops20h 52m
Sun 9/137:50 pm -
2 stops29h 50m
Deal found 8/12![Multiple Airlines logo]()
$753
This Icelandair deal was found by Cheapflights users on 8/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/3110:45 am -
Nonstop7h 55m
Tue 9/154:40 pm -
Nonstop7h 20m
Deal found 8/10![Icelandair logo]()
$834
This Kiwi.com deal was found by Cheapflights users on 8/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/84:45 pm -
1 stop12h 29m
Thu 9/2410:38 am -
1 stop13h 57m
Deal found 8/9![Multiple Airlines logo]()
$808
This Icelandair deal was found by Cheapflights users on 8/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/310:45 am -
Nonstop7h 55m
Thu 9/174:40 pm -
Nonstop7h 20m
Deal found 8/10![Icelandair logo]()
$871
This Icelandair deal was found by Cheapflights users on 8/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/410:45 am -
Nonstop7h 55m
Tue 9/154:40 pm -
Nonstop7h 20m
Deal found 8/10![Icelandair logo]()
$871
This Gotogate deal was found by Cheapflights users on 8/13. 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 9/1110:45 am -
Nonstop7h 55m
Fri 9/1812:15 pm -
1 stop13h 25m
Deal found 8/13![Multiple Airlines logo]()
$875
This Icelandair deal was found by Cheapflights users on 8/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/310:45 am -
Nonstop7h 55m
Tue 9/154:40 pm -
Nonstop7h 20m
Deal found 8/10![Icelandair logo]()
$871
This Icelandair deal was found by Cheapflights users on 8/12. 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 9/267:50 pm -
1 stop18h 25m
Sat 10/33:15 pm -
1 stop11h 40m
Deal found 8/12![Multiple Airlines logo]()
$938
This Icelandair deal was found by Cheapflights users on 8/13. 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 9/274:55 pm -
1 stop20h 10m
Sun 10/44:40 pm -
Nonstop7h 20m
Deal found 8/13![Multiple Airlines logo]()
$982
This Cheapflightsfares deal was found by Cheapflights users on 8/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/2910:40 am -
1 stop18h 36m
Wed 9/27:08 pm -
1 stop12h 52m
Deal found 8/13![Icelandair logo]()
$986
Last-minute flights from Keflavik Intl to DenverDiscover last-minute flight deals from Keflavik Intl to Denver. Data last updated August 14, 2026 and is based on user searches.
Discover last-minute flight deals from Keflavik Intl to Denver. Data last updated August 14, 2026 and is based on user searches.
This Flysmarter deal was found by Cheapflights users on 8/14. 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.
Thu 8/2010:45 am -
Nonstop7h 55m
Thu 8/274:40 pm -
Nonstop7h 20m
Deal found 8/14![Icelandair logo]()
$657
This Icelandair deal was found by Cheapflights users on 8/14. 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 8/14![Multiple Airlines logo]()
$802
This Icelandair deal was found by Cheapflights users on 8/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/3110:45 am -
Nonstop7h 55m
Mon 9/144:40 pm -
Nonstop7h 20m
Deal found 8/10![Icelandair logo]()
$709
This Icelandair deal was found by Cheapflights users on 8/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/14:50 pm -
Nonstop8h 10m
Mon 9/144:40 pm -
Nonstop7h 20m
Deal found 8/10![Icelandair logo]()
$746
This Gotogate deal was found by Cheapflights users on 8/12. 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 9/310:45 am -
Nonstop7h 55m
Sun 9/134:40 pm -
Nonstop7h 20m
Deal found 8/12![Icelandair logo]()
$712
This Kiwi.com deal was found by Cheapflights users on 8/12. 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
Sun 9/1310:47 pm -
2 stops26h 53m
Deal found 8/12![Multiple Airlines logo]()
$738
This Kiwi.com deal was found by Cheapflights users on 8/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/84:45 pm -
1 stop12h 29m
Thu 9/2410:38 am -
1 stop13h 57m
Deal found 8/9![Multiple Airlines logo]()
$808
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 14, 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 14, 2026.
This Kiwi.com deal was found by Cheapflights users on 8/13. 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 9/19:00 am -
1 stop32h 20m
Deal found 8/13![WestJet logo]()
$405
This Kiwi.com deal was found by Cheapflights users on 8/13. 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 9/19:00 am -
2 stops31h 03m
Deal found 8/13![Multiple Airlines logo]()
$434
This Kiwi.com deal was found by Cheapflights users on 8/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/55:25 pm -
3 stops44h 50m
Deal found 8/9![Multiple Airlines logo]()
$483
This Kiwi.com deal was found by Cheapflights users on 8/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/207:35 pm -
3 stops42h 17m
Deal found 8/10![Multiple Airlines logo]()
$495
This Mytrip deal was found by Cheapflights users on 8/14. 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 10/244:50 pm -
Nonstop8h 10m
Deal found 8/14![Icelandair logo]()
$500
This Gotogate deal was found by Cheapflights users on 8/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate 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 8/9![Icelandair logo]()
$502
This Super.com deal was found by Cheapflights users on 8/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/44:50 pm -
Nonstop8h 10m
Deal found 8/9![Icelandair logo]()
$506
This Gotogate deal was found by Cheapflights users on 8/12. 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
Deal found 8/12![Icelandair logo]()
$514
This Mytrip deal was found by Cheapflights users on 8/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/14:50 pm -
Nonstop8h 10m
Deal found 8/13![Icelandair logo]()
$516
This Super.com deal was found by Cheapflights users on 8/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com 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 8/11![Icelandair logo]()
$518
This Super.com deal was found by Cheapflights users on 8/12. 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 9/1110:45 am -
Nonstop7h 55m
Deal found 8/12![Icelandair logo]()
$519
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 14, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $709 (Icelandair) |
One-way from | $405 (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 2,558,603 searches. Data last updated August 14, 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 9/3
9:00 am-11:52 pm
3 stops20h 52m
Denver Intl
Sun 9/13
7:50 pm-7:40 am
2 stops29h 50m
$753
ReykjavikDenver
KEF Reykjavik Keflavik Intl - DEN Denver Intl
KEFDEN
Reykjavik Keflavik Intl
Tue 9/8
4:45 pm-11:14 pm
1 stop12h 29m
Denver Intl
Thu 9/24
10:38 am-6:35 am
1 stop13h 57m
$808
Quickest round-trip
ReykjavikDenver
KEF Reykjavik Keflavik Intl - DEN Denver Intl
KEFDEN
Reykjavik Keflavik Intl
Mon 8/31
10:45 am-12:40 pm
Nonstop7h 55m
Denver Intl
Tue 9/15
4:40 pm-6:00 am
Nonstop7h 20m
$834
ReykjavikDenver
KEF Reykjavik Keflavik Intl - DEN Denver Intl
KEFDEN
Reykjavik Keflavik Intl
Thu 9/3
10:45 am-12:40 pm
Nonstop7h 55m
Denver Intl
Thu 9/17
4:40 pm-6:00 am
Nonstop7h 20m
$871
ReykjavikDenver
KEF Reykjavik Keflavik Intl - DEN Denver Intl
KEFDEN
Reykjavik Keflavik Intl
Fri 9/4
10:45 am-12:40 pm
Nonstop7h 55m
Denver Intl
Tue 9/15
4:40 pm-6:00 am
Nonstop7h 20m
$871
ReykjavikDenver
KEF Reykjavik Keflavik Intl - DEN Denver Intl
KEFDEN
Reykjavik Keflavik Intl
Thu 9/3
10:45 am-12:40 pm
Nonstop7h 55m
Denver Intl
Tue 9/15
4:40 pm-6:00 am
Nonstop7h 20m
$871
ReykjavikDenver
KEF Reykjavik Keflavik Intl - DEN Denver Intl
KEFDEN
Reykjavik Keflavik Intl
Fri 9/11
10:45 am-12:40 pm
Nonstop7h 55m
Denver Intl
Fri 9/18
12:15 pm-7:40 am
1 stop13h 25m
$875
ReykjavikDenver
KEF Reykjavik Keflavik Intl - DEN Denver Intl
KEFDEN
Reykjavik Keflavik Intl
Sat 9/26
7:50 pm-8:15 am
1 stop18h 25m
Denver Intl
Sat 10/3
3:15 pm-8:55 am
1 stop11h 40m
$938
ReykjavikDenver
KEF Reykjavik Keflavik Intl - DEN Denver Intl
KEFDEN
Reykjavik Keflavik Intl
Sun 9/27
4:55 pm-7:05 am
1 stop20h 10m
Denver Intl
Sun 10/4
4:40 pm-6:00 am
Nonstop7h 20m
$982
ReykjavikDenver
KEF Reykjavik Keflavik Intl - DEN Denver Intl
KEFDEN
Reykjavik Keflavik Intl
Sat 8/29
10:40 am-11:16 pm
1 stop18h 36m
Denver Intl
Wed 9/2
7:08 pm-2:00 pm
1 stop12h 52m
$986
Showing 1-10 of 22 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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