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$303+ 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 9/6. Fares are subject to change and may not be available on all flights or dates of travel.
KEF — DEN
Aug 24 — Aug 311
Mon 8/24
Mon 8/31
1 adult, Economy
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Cheap flight deals from Keflavik Intl to Denver

Cheapest flights from Keflavik Intl to Denver
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 July 25, 2026.

This Ticket deal was found by Cheapflights users on 7/23. 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 Ticket is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/3010:45 am
KEF
-
DEN
Nonstop7h 55m
Icelandair
Wed 8/54:40 pm
DEN
-
KEF
Nonstop7h 20m
Icelandair
Deal found 7/23$585
This Kiwi.com deal was found by Cheapflights users on 7/21. 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
KEF
-
DEN
1 stop32h 20m
WestJet
Sun 9/612:15 pm
DEN
-
KEF
1 stop13h 25m
WestJet
Deal found 7/21$630
This Gotogate deal was found by Cheapflights users on 7/20. 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.
Tue 10/64:50 pm
KEF
-
DEN
Nonstop8h 10m
Icelandair
Sun 10/184:40 pm
DEN
-
KEF
Nonstop7h 20m
Icelandair
Deal found 7/20$637
This Gotogate deal was found by Cheapflights users on 7/24. 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 8/214:50 pm
KEF
-
DEN
Nonstop8h 10m
Icelandair
Fri 8/284:40 pm
DEN
-
KEF
Nonstop7h 20m
Icelandair
Deal found 7/24$646
This Gotogate deal was found by Cheapflights users on 7/20. 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.
Mon 10/54:50 pm
KEF
-
DEN
Nonstop8h 10m
Icelandair
Tue 10/204:40 pm
DEN
-
KEF
Nonstop7h 20m
Icelandair
Deal found 7/20$648
This Gotogate deal was found by Cheapflights users on 7/22. 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 8/204:50 pm
KEF
-
DEN
Nonstop8h 10m
Icelandair
Thu 8/274:40 pm
DEN
-
KEF
Nonstop7h 20m
Icelandair
Deal found 7/22$652
This Sembo deal was found by Cheapflights users on 7/20. 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 Sembo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/1210:45 am
KEF
-
DEN
Nonstop7h 55m
Icelandair
Wed 8/198:10 pm
DEN
-
KEF
Nonstop7h 15m
Icelandair
Deal found 7/20$657

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 July 25, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$630
(Kiwi.com)

One-way from

$303
(Kiwi.com)

Good one-way deal

$519 or less
Provider with most accurate pricing for Reykjavik Keflavik Intl-Denver Intl flight deals.
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Provider most trusted by Cheapflights users for Reykjavik Keflavik Intl-Denver Intl flights.
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From Reykjavik Keflavik Intl to Denver Intl
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One-way flight from Reykjavik Keflavik Intl to Denver Intl
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Price to beat on a one-way flight from Reykjavik Keflavik Intl to Denver Intl.
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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 July 25, 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

Price

Cheapest round-trip

ReykjavikDenver

KEF - DEN

KEFDEN

Reykjavik Keflavik Intl

Thu 9/3

9:00 am-11:20 am

1 stop32h 20m

Denver Intl

Sun 9/6

12:15 pm-7:40 am

1 stop13h 25m

$631
Quickest round-trip

ReykjavikDenver

KEF - DEN

KEFDEN

Reykjavik Keflavik Intl

Thu 8/20

4:50 pm-7:00 pm

Nonstop8h 10m

Denver Intl

Thu 8/27

4:40 pm-6:00 am

Nonstop7h 20m

$652

ReykjavikDenver

KEF - DEN

KEFDEN

Reykjavik Keflavik Intl

Tue 10/6

4:50 pm-7:00 pm

Nonstop8h 10m

Denver Intl

Sun 10/18

4:40 pm-6:00 am

Nonstop7h 20m

$662

ReykjavikDenver

KEF - DEN

KEFDEN

Reykjavik Keflavik Intl

Wed 8/12

9:00 am-11:52 pm

3 stops20h 52m

Denver Intl

Wed 8/19

7:50 pm-7:40 am

3 stops29h 50m

$665

ReykjavikDenver

KEF - DEN

KEFDEN

Reykjavik Keflavik Intl

Thu 9/3

9:00 am-9:41 pm

2 stops18h 41m

Denver Intl

Sun 9/6

12:15 pm-7:40 am

1 stop13h 25m

$680

ReykjavikDenver

KEF - DEN

KEFDEN

Reykjavik Keflavik Intl

Wed 8/12

9:00 am-11:20 am

1 stop32h 20m

Denver Intl

Wed 8/19

12:15 pm-7:40 am

1 stop13h 25m

$687

ReykjavikDenver

KEF - DEN

KEFDEN

Reykjavik Keflavik Intl

Mon 9/7

4:50 pm-7:00 pm

Nonstop8h 10m

Denver Intl

Mon 9/14

4:40 pm-6:00 am

Nonstop7h 20m

$799

ReykjavikDenver

KEF - DEN

KEFDEN

Reykjavik Keflavik Intl

Tue 8/25

12:45 pm-11:16 pm

1 stop16h 31m

Denver Intl

Sat 8/29

7:08 pm-9:00 am

1 stop31h 52m

$804
Cheapest one-way

ReykjavikDenver

KEF - DEN

KEFDEN

Reykjavik Keflavik Intl

Thu 8/27

9:00 am-11:52 pm

3 stops20h 52m

$462

ReykjavikDenver

KEF - DEN

KEFDEN

Reykjavik Keflavik Intl

Mon 8/17

9:00 am-11:20 am

1 stop32h 20m

$476

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/24

Showing 1-10 of 19 resultsSorted by cheapest first
1
2
  • 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.
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

What is the cheapest time of day to fly from KEF to DEN?

Find hourly flight availability from Keflavik Intl to Denver. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated July 25, 2026.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Reykjavik Keflavik Intl Airport to Denver as you normally would.

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.

  • What airport do you fly into for flights to Denver from Reykjavik Keflavik Intl?

    For a flight from Reykjavik Keflavik Intl to Denver, you will be flying into Denver Intl. Denver Intl (DEN) is just 18.5 mi from the center of the city. Denver Intl is the only Denver airport and it handles 2 inbound flights from Reykjavik Keflavik Intl per day. 0 airlines have flights to Denver Intl from Reykjavik Keflavik Intl on a regular basis.

  • How long is the flight from Reykjavik Keflavik Intl Airport to Denver?

    Departing from Reykjavik Keflavik Intl Airport to Denver will take you 8h 10m. Reykjavik Keflavik Intl Airport and Denver are separated by a distance of 3556 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • What are the cheapest flights from Reykjavik Keflavik Intl Airport to Denver?

    Looking for the cheapest flight from Reykjavik Keflavik Intl Airport to Denver? While on average our users pay $519, our data indicates the cheapest price to be $504. The most popular route (Reykjavik Keflavik Intl - Denver Intl), is priced around $635.

  • Can I find deals for flights from Keflavik Intl to Denver that include hotel bookings?

    Yes. In addition to deals on Keflavik Intl to Denver flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Keflavik Intl to Denver?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Keflavik Intl to Denver.

  • Can I find deals for business class flights from Keflavik Intl to Denver?

    Yes. Cheapflights offers flight deals from Keflavik Intl to Denver by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

See more FAQs

Traveling to a place near Denver?

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