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Keflavik Intl

$322+ 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 8/19. Fares are subject to change and may not be available on all flights or dates of travel.
DEN — KEF
Jun 27 — Jul 41
Sat 6/27
Sat 7/4
1 adult, Economy
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Find cheap flights from Denver to Keflavik Intl with Cheapflights

1. Tell us where you want to go

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Cheapflights Tip: The best prices from Denver Intl to Reykjavik Keflavik Intl are usually found in January or October, booked 20 days in advance, depart on a Tuesday or Wednesday and return on a Monday

Cheap 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 May 28, 2026.

This Gotogate deal was found by Cheapflights users on 5/24. 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.
Mon 8/248:10 pm
DEN
-
KEF
Nonstop7h 15m
Icelandair
Fri 8/2810:45 am
KEF
-
DEN
Nonstop7h 55m
Icelandair
Deal found 5/24$579
This Mytrip deal was found by Cheapflights users on 5/27. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/214:40 pm
DEN
-
KEF
Nonstop7h 20m
Icelandair
Mon 9/284:50 pm
KEF
-
DEN
Nonstop8h 10m
Icelandair
Deal found 5/27$580
This deal was found by Cheapflights users on 5/28. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/258:10 pm
DEN
-
KEF
Nonstop7h 15m
Icelandair
Thu 8/64:50 pm
KEF
-
DEN
Nonstop8h 10m
Icelandair
Deal found 5/28$581
This Mytrip deal was found by Cheapflights users on 5/26. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/148:10 pm
DEN
-
KEF
Nonstop7h 15m
Icelandair
Mon 7/274:50 pm
KEF
-
DEN
Nonstop8h 10m
Icelandair
Deal found 5/26$582
This Mytrip deal was found by Cheapflights users on 5/28. 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 7/78:10 pm
DEN
-
KEF
Nonstop7h 15m
Icelandair
Wed 7/1510:45 am
KEF
-
DEN
Nonstop7h 55m
Icelandair
Deal found 5/28$583
This Mytrip deal was found by Cheapflights users on 5/26. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/278:10 pm
DEN
-
KEF
Nonstop7h 15m
Icelandair
Mon 8/310:45 am
KEF
-
DEN
Nonstop7h 55m
Icelandair
Deal found 5/26$584
This Cheapflightsfares deal was found by Cheapflights users on 5/28. 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 8/268:10 pm
DEN
-
KEF
Nonstop7h 15m
Icelandair
Fri 9/44:50 pm
KEF
-
DEN
Nonstop8h 10m
Icelandair
Deal found 5/28$586
This Kiwi.com deal was found by Cheapflights users on 5/26. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/214:40 pm
DEN
-
KEF
Nonstop7h 20m
Icelandair
Wed 10/74:50 pm
KEF
-
DEN
Nonstop8h 10m
Icelandair
Deal found 5/26$587
This Kiwi.com deal was found by Cheapflights users on 5/25. 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.
Fri 9/254:40 pm
DEN
-
KEF
Nonstop7h 20m
Icelandair
Mon 10/54:50 pm
KEF
-
DEN
Nonstop8h 10m
Icelandair
Deal found 5/25$589
This Icelandair deal was found by Cheapflights users on 5/27. 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 Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/274:40 pm
DEN
-
KEF
Nonstop7h 25m
Icelandair
Sat 10/314:55 pm
KEF
-
DEN
Nonstop8h 10m
Icelandair
Deal found 5/27$591
This Justfly.com deal was found by Cheapflights users on 5/28. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/278:10 pm
DEN
-
KEF
Nonstop7h 15m
Icelandair
Thu 8/64:50 pm
KEF
-
DEN
Nonstop8h 10m
Icelandair
Deal found 5/28$593
This Gotogate deal was found by Cheapflights users on 5/25. 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.
Mon 9/214:40 pm
DEN
-
KEF
Nonstop7h 20m
Icelandair
Thu 10/14:50 pm
KEF
-
DEN
Nonstop8h 10m
Icelandair
Deal found 5/25$596

Find 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 May 28, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$579
(Gotogate)

One-way from

$322
(Trip.com)

Popular in

March

Cheapest in

January

Average price

$626

Good round-trip deal

$779 or less

Good one-way deal

$444 or less
Provider with most accurate pricing for Denver Intl-Reykjavik Keflavik Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for Denver Intl-Reykjavik Keflavik Intl flights.
Search Deals
From Denver Intl to Reykjavik Keflavik Intl
Search Deals
One-way flight from Denver Intl to Reykjavik Keflavik Intl
Search Deals
Highest demand for flights based on searches. 2% potential increase in price ($18 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($9 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in May 2026
Search Deals
Price to beat on a round-trip flight from Denver Intl to Reykjavik Keflavik Intl.
Search Deals
Price to beat on a one-way flight from Denver Intl to Reykjavik Keflavik Intl.
Search Deals

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 May 28, 2026.
Use the filters below to find and compare flights from Denver to Reykjavik Keflavik Intl Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

DenverReykjavik

DEN - KEF

DENKEF

Denver Intl

Sun 8/2

8:45 am-9:00 am

1 stop18h 15m

Reykjavik Keflavik Intl

Tue 8/11

12:45 pm-8:10 pm

1 stop13h 25m

$757

DenverReykjavik

DEN - KEF

DENKEF

Denver Intl

Sat 9/26

4:40 pm-6:00 am

Nonstop7h 20m

Reykjavik Keflavik Intl

Mon 10/5

5:00 pm-8:00 am

1 stop21h 00m

$833
Quickest round-trip

DenverReykjavik

DEN - KEF

DENKEF

Denver Intl

Fri 7/3

3:25 pm-6:35 am

1 stop9h 10m

Reykjavik Keflavik Intl

Thu 7/9

10:45 am-12:40 pm

Nonstop7h 55m

$846

DenverReykjavik

DEN - KEF

DENKEF

Denver Intl

Tue 9/29

7:10 pm-8:50 am

1 stop31h 40m

Reykjavik Keflavik Intl

Fri 10/9

9:15 am-10:31 am

1 stop31h 16m

$852

DenverReykjavik

DEN - KEF

DENKEF

Denver Intl

Wed 9/9

4:00 pm-7:00 am

1 stop9h 00m

Reykjavik Keflavik Intl

Fri 9/25

9:30 am-3:24 pm

1 stop11h 54m

$854

DenverReykjavik

DEN - KEF

DENKEF

Denver Intl

Wed 9/9

12:20 pm-9:30 am

1 stop15h 10m

Reykjavik Keflavik Intl

Thu 9/24

11:25 am-10:35 pm

1 stop17h 10m

$854

DenverReykjavik

DEN - KEF

DENKEF

Denver Intl

Thu 10/1

8:29 pm-8:50 am

1 stop30h 21m

Reykjavik Keflavik Intl

Thu 10/15

10:00 am-10:22 am

1 stop30h 22m

$857

DenverReykjavik

DEN - KEF

DENKEF

Denver Intl

Wed 8/26

1:15 pm-9:30 am

2 stops14h 15m

Reykjavik Keflavik Intl

Fri 9/4

11:25 am-10:45 pm

1 stop17h 20m

$859

DenverReykjavik

DEN - KEF

DENKEF

Denver Intl

Fri 9/11

6:55 pm-7:00 am

1 stop30h 05m

Reykjavik Keflavik Intl

Fri 9/25

9:30 am-3:24 pm

1 stop11h 54m

$860

DenverReykjavik

DEN - KEF

DENKEF

Denver Intl

Tue 9/29

4:40 pm-6:00 am

Nonstop7h 20m

Reykjavik Keflavik Intl

Fri 10/9

5:00 pm-12:05 am

1 stop13h 05m

$863

Flights are sorted by cheapest round-trip flights first.

Deals found on 5/25

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

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 May.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice Accuracy3 starsTrust Score*3 stars
oojoPrice Accuracy3 starsTrust Score*2 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?

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 19 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, January is the cheapest month in which you can book a flight from Denver to Reykjavik Keflavik Intl Airport (average of $533). Flying from Denver to Reykjavik Keflavik Intl Airport in March is currently the most expensive (average of $707). 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 May 28, 2026.

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

How much does it cost to fly round-trip from Denver to Reykjavik Keflavik Intl Airport?

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 May 28, 2026.
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
662 reviews

Comfort

6.9

Overall

7.0

Crew

8.0

Entertainment

6.9

Food

6.2

Boarding

7.2

Reviews

1 / 20
4.0
Okay

Daniel,May 2026

LHR - KEF

We had to change flights in Reykjavik and the outgoing flight was send to gate D23, where there were NO SEATS in the lounge. And in general, there were not enough seats for transferring passengers in general. After the three hour flight from London and then expecting a 7 hour flight to Seattle, having to stand & mill around for over an hour was rather unpleasant. We had booked Business Class and were assigned seats in the bulkhead seats, row 1. This made a MOST unpleasant 7 hour flight from Reykjavik to Seattle. The flight attendants had stored some of their carry-ons in the overhead bin just above us so it left us little room to place our carry-ons that was convenient. The seats in Business Class are too deep for shorter people and without ANY form of leg rest/support, we struggled to be comfortable for the entire flight.
Icelandair
7.0
Good
662 reviews
Icelandair
7.0
Good
662 reviews

Comfort

6.9

Overall

7.0

Crew

8.0

Entertainment

6.9

Food

6.2

Boarding

7.2

Reviews

1 / 20
4.0
Okay

Daniel,May 2026

LHR - KEF

We had to change flights in Reykjavik and the outgoing flight was send to gate D23, where there were NO SEATS in the lounge. And in general, there were not enough seats for transferring passengers in general. After the three hour flight from London and then expecting a 7 hour flight to Seattle, having to stand & mill around for over an hour was rather unpleasant. We had booked Business Class and were assigned seats in the bulkhead seats, row 1. This made a MOST unpleasant 7 hour flight from Reykjavik to Seattle. The flight attendants had stored some of their carry-ons in the overhead bin just above us so it left us little room to place our carry-ons that was convenient. The seats in Business Class are too deep for shorter people and without ANY form of leg rest/support, we struggled to be comfortable for the entire flight.

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 2 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 15m. Icelandair provides one of the quickest options available for as low as $579. 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 $416, 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 32% 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 $1,404 for a flight from Denver to Reykjavik Keflavik Intl Airport. The cheapest flight overall is $328 while the most popular route, (Denver Intl - Reykjavik Keflavik Intl) is currently priced at $556.

  • 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, January is the cheapest month in which you can book a flight from Denver to Reykjavik Keflavik Intl Airport (average of $533). Flying from Denver to Reykjavik Keflavik Intl Airport in March is currently the most expensive (average of $707). 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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Alternative routes for Denver to Keflavik Intl

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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 May 28, 2026.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest$416Average$621FlexibilityNo cancel feeOn-time76%

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