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Keflavik Intl

$378+ Cheap flights from Denver (DEN) to Keflavik Intl (KEF)

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 11/19. Fares are subject to change and may not be available on all flights or dates of travel.
DEN — KEF
nov. 19 — nov. 261
mié. 11/19
mié. 11/26
1 adult, Economy
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Cheap flight deals from Denver to Keflavik Intl

Discover tips and strategies to find the most affordable flight options for your journey from Denver (DEN) to Keflavik Intl (KEF). 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 octubre 20, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$413
(CrystalTravel)

One-way from

$378
(Kiwi.com)

Popular in

December

Cheapest in

October

Average price

$552

Good round-trip deal

$500 or less

Good one-way deal

$451 or less
Provider with most accurate pricing for Denver Intl-Reykjavik Keflavik Intl flight deals.
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Provider most trusted by Cheapflights users for Denver Intl-Reykjavik Keflavik Intl flights.
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From Denver Intl to Reykjavik Keflavik Intl
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One-way flight from Denver Intl to Reykjavik Keflavik Intl
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Highest demand for flights based on searches. 6% potential increase in price ($41 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($13 potential savings vs. average RT price).
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Average for round-trip flights in October 2025
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Price to beat on a round-trip flight from Denver Intl to Reykjavik Keflavik Intl.
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Price to beat on a one-way flight from Denver Intl to Reykjavik Keflavik Intl.
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Find flight deals from Denver to Keflavik Intl

Cheapest flights from Denver to Keflavik Intl
Explore the most affordable flight options available from Denver to Keflavik Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on octubre 20, 2025.

This CrystalTravel deal was found by Cheapflights users on 10/19. 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 CrystalTravel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 11/33:40 pmDEN - KEF
Nonstop7h 25mIcelandair
mié. 11/124:55 pmKEF - DEN
Nonstop8h 10mIcelandair
Deal found 10/19$413
This Mytrip deal was found by Cheapflights users on 10/19. 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.
mié. 12/33:40 pmDEN - KEF
Nonstop7h 25mIcelandair
mié. 12/104:55 pmKEF - DEN
Nonstop8h 10mIcelandair
Deal found 10/19$435
This Icelandair deal was found by Cheapflights users on 10/18. 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.
mar. 11/113:40 pmDEN - KEF
Nonstop7h 25mIcelandair
mié. 11/194:55 pmKEF - DEN
Nonstop8h 10mIcelandair
Deal found 10/18$449
This Mytrip deal was found by Cheapflights users on 10/20. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 10/284:40 pmDEN - KEF
Nonstop7h 25mIcelandair
jue. 11/64:55 pmKEF - DEN
Nonstop8h 10mIcelandair
Deal found 10/20$471
This Flightnetwork deal was found by Cheapflights users on 10/19. 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.
mié. 12/33:40 pmDEN - KEF
Nonstop7h 25mIcelandair
lun. 12/84:55 pmKEF - DEN
Nonstop8h 10mIcelandair
Deal found 10/19$490
This CrystalTravel deal was found by Cheapflights users on 10/19. 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 CrystalTravel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 12/33:40 pmDEN - KEF
Nonstop7h 25mIcelandair
mar. 12/94:55 pmKEF - DEN
Nonstop8h 10mIcelandair
Deal found 10/19$494
This FlightHub deal was found by Cheapflights users on 10/18. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 11/113:40 pmDEN - KEF
Nonstop7h 25mIcelandair
mar. 11/254:55 pmKEF - DEN
Nonstop8h 10mIcelandair
Deal found 10/18$526
This KAYAK deal was found by Cheapflights users on 10/18. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 11/93:40 pmDEN - KEF
Nonstop7h 25mIcelandair
lun. 11/244:55 pmKEF - DEN
Nonstop8h 10mIcelandair
Deal found 10/18$537
This CrystalTravel deal was found by Cheapflights users on 10/17. 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 CrystalTravel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 10/224:40 pmDEN - KEF
Nonstop7h 20mIcelandair
jue. 10/304:55 pmKEF - DEN
Nonstop8h 10mIcelandair
Deal found 10/17$542
This FlightHub deal was found by Cheapflights users on 10/19. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 11/113:40 pmDEN - KEF
Nonstop7h 25mIcelandair
sáb. 11/224:55 pmKEF - DEN
Nonstop8h 10mIcelandair
Deal found 10/19$551
This CrystalTravel deal was found by Cheapflights users on 10/19. 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 CrystalTravel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 10/234:40 pmDEN - KEF
Nonstop7h 20mIcelandair
mié. 10/294:55 pmKEF - DEN
Nonstop8h 10mIcelandair
Deal found 10/19$557

Cheapflights Fare Finder

 
Customize your flight search to find flights from Denver to Keflavik Intl 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 octubre 20, 2025.
Use the filters below to find and compare flights from Denver to Reykjavik Keflavik Intl Airport that are best for you.

Fly from

Denver

Fly to

Keflavik Intl

Route

Depart

Return

Price

DenverReykjavik

DEN - KEF

DENKEF

Denver Intl

lun. 11/10

3:40 pm-6:05 am

Nonstop7h 25m

Reykjavik Keflavik Intl

mar. 11/25

4:55 pm-6:05 pm

Nonstop8h 10m

$537

DenverReykjavik

DEN - KEF

DENKEF

Denver Intl

mar. 11/11

3:40 pm-6:05 am

Nonstop7h 25m

Reykjavik Keflavik Intl

vie. 11/21

4:55 pm-6:05 pm

Nonstop8h 10m

$537

DenverReykjavik

DEN - KEF

DENKEF

Denver Intl

lun. 11/10

3:40 pm-6:05 am

Nonstop7h 25m

Reykjavik Keflavik Intl

mié. 11/26

4:55 pm-6:05 pm

Nonstop8h 10m

$562

DenverReykjavik

DEN - KEF

DENKEF

Denver Intl

mar. 11/11

3:40 pm-6:05 am

Nonstop7h 25m

Reykjavik Keflavik Intl

lun. 11/17

4:55 pm-6:05 pm

Nonstop8h 10m

$562

DenverReykjavik

DEN - KEF

DENKEF

Denver Intl

dom. 11/16

3:40 pm-6:05 am

Nonstop7h 25m

Reykjavik Keflavik Intl

sáb. 11/22

4:55 pm-6:05 pm

Nonstop8h 10m

$562

DenverReykjavik

DEN - KEF

DENKEF

Denver Intl

mié. 11/12

3:40 pm-6:05 am

Nonstop7h 25m

Reykjavik Keflavik Intl

mié. 11/19

4:55 pm-6:05 pm

Nonstop8h 10m

$577

DenverReykjavik

DEN - KEF

DENKEF

Denver Intl

mié. 4/8

2:22 pm-7:50 am

2 stops35h 28m

Reykjavik Keflavik Intl

mié. 4/22

8:35 am-10:19 pm

2 stops19h 44m

$602

DenverReykjavik

DEN - KEF

DENKEF

Denver Intl

vie. 11/14

3:40 pm-6:05 am

Nonstop7h 25m

Reykjavik Keflavik Intl

mar. 11/25

4:55 pm-6:05 pm

Nonstop8h 10m

$649

DenverReykjavik

DEN - KEF

DENKEF

Denver Intl

mié. 12/3

12:18 pm-9:15 am

2 stops37h 57m

Reykjavik Keflavik Intl

mié. 12/10

10:00 am-3:30 pm

2 stops36h 30m

$658

DenverReykjavik

DEN - KEF

DENKEF

Denver Intl

mié. 11/12

3:40 pm-6:05 am

Nonstop7h 25m

Reykjavik Keflavik Intl

vie. 11/21

4:55 pm-6:05 pm

Nonstop8h 10m

$664

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/20

Showing 1-10 of 22 results
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Compare providers for flights from Denver to Keflavik Intl

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 Denver to Keflavik Intl in October.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice Accuracy3 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 Denver-Reykjavik Keflavik Intl Airport flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Denver-Reykjavik Keflavik Intl Airport flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Denver-Reykjavik Keflavik Intl Airport flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Denver-Reykjavik Keflavik Intl Airport 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 Denver-Reykjavik Keflavik Intl Airport 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 Denver to Keflavik Intl

Have a flexible travel schedule? Discover the best time to fly to Keflavik Intl from Denver 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 Denver to Reykjavik Keflavik Intl Airport

How far ahead should I book a flight from Denver to Reykjavik Keflavik Intl Airport?

Use this chart to determine the optimal time to book a round-trip flight from Denver to Keflavik Intl. Price data was last updated on October 17, 2025.

To ensure you get the cheapest price possible for a flight from Denver to Reykjavik Keflavik Intl Airport, you should look to book at least 10 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

What is the cheapest month to book a flight from Denver to Reykjavik Keflavik Intl Airport?

Currently, November is the cheapest month in which you can book a flight from Denver to Reykjavik Keflavik Intl Airport (average of $384). Flying from Denver to Reykjavik Keflavik Intl Airport in June is currently the most expensive (average of $564). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

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

Find hourly flight availability from Denver to Keflavik Intl. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated octubre 20, 2025.

One of the essential ways to save on airfare from Denver to Reykjavik Keflavik Intl Airport is to remain as flexible as possible. Flights that are at noon tend to be the most expensive. A flight in the afternoon could potentially save you up to 21% on airfare.

What is the cheapest day to fly from Denver to Reykjavik Keflavik Intl Airport?

Use this chart to determine the cheapest time to fly round-trip from Denver to Keflavik Intl. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their Denver to Reykjavik Keflavik Intl Airport flight should consider departing on Tuesday afternoons when fares are most often at their lowest. Thursday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

Reviews of airlines servicing Keflavik Intl

Get insights into the airlines that provide service to Keflavik Intl. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Keflavik Intl. Reviews last updated octubre 20, 2025.
Peruse reviews from past customers who have flown with Icelandair from Denver to Reykjavik Keflavik Intl Airport to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Icelandair
7.0
Good
561 reviews

Crew

8.1

Overall

7.0

Boarding

7.2

Entertainment

7.0

Food

6.2

Comfort

6.9

Reviews

1 / 20
6.0
Good

Anonymous,Aug 2025

GVA - KEF

Terrible customer service when dealing with phone representatives. Baggage was lost.
Icelandair
7.0
Good
561 reviews
Icelandair
7.0
Good
561 reviews

Crew

8.1

Overall

7.0

Boarding

7.2

Entertainment

7.0

Food

6.2

Comfort

6.9

Reviews

1 / 20
6.0
Good

Anonymous,Aug 2025

GVA - KEF

Terrible customer service when dealing with phone representatives. Baggage was lost.

Related info for your journey

Find useful and relevant information for your journey from Denver to Keflavik Intl. 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 from for flights from Denver to Reykjavik Keflavik Intl?

    Denver Intl (DEN), located 18.5 mi from the city center, is the airport you fly out of when you book flights from Denver to Reykjavik Keflavik Intl. 1 airline have flights from Denver Intl to Reykjavik Keflavik Intl on a regular basis. Booking flights from Denver Intl to Reykjavik Keflavik Intl should not be difficult; the airport handles an average of 0 outbound flights to Reykjavik Keflavik Intl per day.

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

    A quick flight from Denver to Reykjavik Keflavik Intl Airport can take about 7h 25m. Icelandair provides one of the quickest options available for as low as $537. The distance from Denver to Reykjavik Keflavik Intl Airport is about 3556 mi. Generally, flights for this route are nonstop.

  • What is the cheapest airline to fly from Denver to Reykjavik Keflavik Intl Airport round-trip?

    Currently priced at $439, Icelandair will fly you from Denver to Reykjavik Keflavik Intl Airport and back. In addition to Icelandair, many other airlines offer competitively priced options for your trip. Icelandair is priced at 30% lower than the current average price of a flight leaving 3 months from now.

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

    On average you can expect to pay $1,204 for a flight from Denver to Reykjavik Keflavik Intl Airport. The cheapest flight overall is $397 while the most popular route, (Denver Intl - Reykjavik Keflavik Intl) is currently priced at $413.

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

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

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

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

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

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

  • What is the cheapest month to book a flight from Denver to Reykjavik Keflavik Intl Airport?

    Currently, November is the cheapest month in which you can book a flight from Denver to Reykjavik Keflavik Intl Airport (average of $384). Flying from Denver to Reykjavik Keflavik Intl Airport in June is currently the most expensive (average of $564). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near Reykjavik Keflavik Intl Airport?

Book flights to Reykjavik Keflavik Intl Airport if you plan to visit one of these locations
Keflavik
Hveragerdi

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Top airline flying from Denver to Keflavik Intl

Discover the top airline that operate flights from Denver to Keflavik Intl. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated octubre 20, 2025.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest$439Average$626FlexibilityNo cancel feeOn-time76%

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