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$455+ 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 4/5. Fares are subject to change and may not be available on all flights or dates of travel.
KEF — DEN
Dec 20 — Dec 271
Sat 12/20
Sat 12/27
1 adult, Economy
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Find 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 November 20, 2025.

This Icelandair deal was found by Cheapflights users on 11/18. 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 Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/44:55 pmKEF - DEN
Nonstop8h 10mIcelandair
Sun 12/73:40 pmDEN - KEF
Nonstop7h 25mIcelandair
Deal found 11/18$686
This Flysmarter deal was found by Cheapflights users on 11/20. 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 Flysmarter is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/55:00 pmKEF - DEN
1 stop12h 59mIcelandair
Sun 12/143:40 pmDEN - KEF
Nonstop7h 25mIcelandair
Deal found 11/20$785
This Icelandair deal was found by Cheapflights users on 11/18. 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 Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/174:45 pmKEF - DEN
1 stop21h 05mMultiple Airlines
Wed 12/243:40 pmDEN - KEF
Nonstop7h 25mMultiple Airlines
Deal found 11/18$823
This Icelandair deal was found by Cheapflights users on 11/20. 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.
Fri 12/55:00 pmKEF - DEN
1 stop12h 59mMultiple Airlines
Sun 12/149:55 amDEN - KEF
1 stop13h 45mMultiple Airlines
Deal found 11/20$839
This Cheapflightsfares deal was found by Cheapflights users on 11/18. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/179:55 amKEF - DEN
1 stop20h 04mIcelandair
Wed 12/248:00 amDEN - KEF
1 stop15h 15mIcelandair
Deal found 11/18$927
This American Airlines deal was found by Cheapflights users on 11/18. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/411:45 amKEF - DEN
1 stop34h 45mAmerican Airlines
Sun 12/77:26 amDEN - KEF
2 stops44h 29mAmerican Airlines
Deal found 11/18$998

Cheap 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 November 20, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$583
(Cheapflightsfares)

One-way from

$455
(Cheapflightsfares)
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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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 November 20, 2025.
Use the filters below to find and compare flights from Reykjavik Keflavik Intl Airport to Denver that are best for you.

Fly from

Keflavik Intl

Fly to

Denver

Route

Depart

Return

Price

ReykjavikDenver

KEF - DEN

KEFDEN

Reykjavik Keflavik Intl

Sun 1/11

4:55 pm-6:05 pm

Nonstop8h 10m

Denver Intl

Sun 1/18

3:40 pm-6:05 am

Nonstop7h 25m

$599

ReykjavikDenver

KEF - DEN

KEFDEN

Reykjavik Keflavik Intl

Thu 12/4

4:55 pm-6:05 pm

Nonstop8h 10m

Denver Intl

Sun 12/7

3:40 pm-6:05 am

Nonstop7h 25m

$686

ReykjavikDenver

KEF - DEN

KEFDEN

Reykjavik Keflavik Intl

Thu 4/30

4:50 pm-6:55 pm

Nonstop8h 05m

Denver Intl

Fri 5/15

9:18 am-6:05 am

1 stop14h 47m

$742

ReykjavikDenver

KEF - DEN

KEFDEN

Reykjavik Keflavik Intl

Sun 1/11

4:55 pm-6:05 pm

Nonstop8h 10m

Denver Intl

Sun 1/18

7:50 am-6:35 am

1 stop15h 45m

$753

ReykjavikDenver

KEF - DEN

KEFDEN

Reykjavik Keflavik Intl

Fri 12/5

5:00 pm-10:59 pm

1 stop12h 59m

Denver Intl

Sun 12/14

3:40 pm-6:05 am

Nonstop7h 25m

$785

ReykjavikDenver

KEF - DEN

KEFDEN

Reykjavik Keflavik Intl

Wed 12/17

4:45 pm-6:50 am

1 stop21h 05m

Denver Intl

Wed 12/24

3:40 pm-6:05 am

Nonstop7h 25m

$823

ReykjavikDenver

KEF - DEN

KEFDEN

Reykjavik Keflavik Intl

Sun 4/5

4:50 pm-6:55 pm

Nonstop8h 05m

$455

ReykjavikDenver

KEF - DEN

KEFDEN

Reykjavik Keflavik Intl

Mon 12/8

4:55 pm-6:05 pm

Nonstop8h 10m

$456

ReykjavikDenver

KEF - DEN

KEFDEN

Reykjavik Keflavik Intl

Mon 12/8

5:00 pm-11:04 pm

2 stops37h 04m

$533

ReykjavikDenver

KEF - DEN

KEFDEN

Reykjavik Keflavik Intl

Fri 11/28

4:55 pm-6:05 pm

Nonstop8h 10m

$542

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/19

Showing 1-10 of 14 results
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Compare providers for flights from Keflavik Intl to Denver

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Keflavik Intl to Denver in November.
ProviderPrice AccuracyTrust Score*
FlightHubPrice Accuracy3 starsTrust Score*1 star
eDreamsPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice Accuracy2 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Reykjavik Keflavik Intl Airport-Denver flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Reykjavik Keflavik Intl Airport-Denver flight deals on Cheapflights vs. eDreams >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 eDreams the most. eDreams 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 November 20, 2025.

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 0 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. Generally, flights for this route are nonstop.

  • 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

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