DEN - KEF

$277 Find Cheap Flights from Denver to Reykjavik-Keflavik Airport

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Denver to Reykjavik departing on 10/3. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy

KAYAK searches hundreds of travel sites at once for deals on flights to Reykjavik Keflavik Intl Airport

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Denver to Reykjavik, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Denver to Reykjavik, as well as popular online travel agencies
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Flights Deals

Cheap Flights from Denver to Keflavik Intl (DEN-KEF)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Denver to Keflavik Intl that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Denver to Reykjavik

Thu, Oct 16 - Mon, Oct 20
Icelandair Logo
4:40 pm - 6:00 amDEN-KEF
7h 20mnonstop
Icelandair Logo
4:50 pm - 6:55 pmKEF-DEN
8h 05mnonstop
$366Icelandair
Find Deal
Sat, Aug 9 - Sat, Aug 16
Icelandair Logo
8:10 pm - 9:25 amDEN-KEF
7h 15mnonstop
Icelandair Logo
10:35 am - 12:30 pmKEF-DEN
7h 55mnonstop
$378Icelandair
Find Deal
Thu, Aug 14 - Mon, Aug 25
Icelandair Logo
4:40 pm - 6:00 amDEN-KEF
7h 20mnonstop
Icelandair Logo
4:50 pm - 6:55 pmKEF-DEN
8h 05mnonstop
$380Icelandair
Find Deal
Fri, Sep 26 - Thu, Oct 2
Icelandair Logo
4:40 pm - 6:00 amDEN-KEF
7h 20mnonstop
Icelandair Logo
4:50 pm - 6:55 pmKEF-DEN
8h 05mnonstop
$382Icelandair
Find Deal
Thu, Aug 7 - Wed, Aug 13
Icelandair Logo
4:40 pm - 6:00 amDEN-KEF
7h 20mnonstop
Icelandair Logo
10:35 am - 12:30 pmKEF-DEN
7h 55mnonstop
$385Icelandair
Find Deal
Sun, Nov 2 - Thu, Nov 13
Icelandair Logo
3:40 pm - 6:05 amDEN-KEF
7h 25mnonstop
Icelandair Logo
4:55 pm - 6:05 pmKEF-DEN
8h 10mnonstop
$388Icelandair
Find Deal
Thu, Aug 7 - Wed, Aug 13
Icelandair Logo
4:40 pm - 6:00 amDEN-KEF
7h 20mnonstop
Icelandair Logo
10:35 am - 12:30 pmKEF-DEN
7h 55mnonstop
$389Icelandair
Find Deal
Fri, Aug 15 - Wed, Aug 27
Icelandair Logo
8:10 pm - 9:25 amDEN-KEF
7h 15mnonstop
Icelandair Logo
10:35 am - 12:30 pmKEF-DEN
7h 55mnonstop
$390Icelandair
Find Deal
Fri, Aug 15 - Wed, Aug 27
Icelandair Logo
8:10 pm - 9:25 amDEN-KEF
7h 15mnonstop
Icelandair Logo
10:35 am - 12:30 pmKEF-DEN
7h 55mnonstop
$391Icelandair
Find Deal
Thu, Aug 7 - Wed, Aug 13
Icelandair Logo
4:40 pm - 6:00 amDEN-KEF
7h 20mnonstop
Icelandair Logo
10:35 am - 12:30 pmKEF-DEN
7h 55mnonstop
$393Icelandair
Find Deal
Useful Info

KAYAK's insights & trends for Denver to Reykjavik flights

Get data-powered insights and trends into flights from Denver to Reykjavik to help you find the cheapest flights, the best time to fly and much more.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Denver to Reykjavik Keflavik Intl Airport, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Denver to Reykjavik Keflavik Intl Airport is February, where tickets cost $563 (return) on average. On the other hand, the most expensive months are November and July, where the average cost of round-trip tickets is $792 and $710 respectively.

Can I save money by flying with a layover from Denver to Reykjavik Keflavik Intl Airport?

The average round-trip price for all non-stop flights, flights with one layover, and flights with two layovers for the route found by users searching on KAYAK in the last 2 weeks.

Yes, flying with a layover may cost you more time, but you can also save money on the route, with a 1 stop layover the cheapest option at $622 on average.

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

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Denver to Reykjavik Keflavik Intl Airport, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from Denver to Reykjavik Keflavik Intl Airport, you should book around 6 weeks before departure. For the absolute cheapest price, our data suggests you should book 15 weeks before departure.

Good to know

Low seasonJanuary
High seasonJuly
Cheapest flight$277
Best time to beat the crowds but there is an average 1% increase in price.
Most popular time to fly with an average 9% increase in price.
Flight from Denver to Reykjavik-Keflavik Airport

When to book flights from Denver to Reykjavik

Are your dates flexible? Find out the best times to travel from Denver to Reykjavik based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking Denver to Reykjavik-Keflavik Airport flights

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

    In the last 3 days, the lowest price for a flight from Denver to Reykjavik Keflavik Intl Airport was $277 for a one-way ticket and $366 for a round-trip.

  • Do I need a passport to fly between Denver and Reykjavik-Keflavik Airport?

    Yes, you’ll need a passport to travel to Reykjavik-Keflavik Airport from Denver.

  • Which airports will I be using when flying from Denver to Reykjavik-Keflavik Airport?

    On your way to Reykjavik-Keflavik Airport, you’ll fly out from Denver Intl. You’ll be landing at Reykjavik Keflavik Intl.

  • Which airlines offer Wi-Fi service onboard planes from Denver to Reykjavik-Keflavik Airport?

    Lufthansa, United Airlines, Air France, Finnair, and American Airlines offer inflight Wi-Fi service on the Denver to Reykjavik-Keflavik Airport flight route.

  • Which aircraft models fly most regularly from Denver to Reykjavik-Keflavik Airport?

    The Airbus A350-1000 is the aircraft model that flies most regularly on the Denver to Reykjavik-Keflavik Airport flight route.

  • On which days can I fly direct from Denver to Reykjavik-Keflavik Airport?

    There are nonstop flights from Denver to Reykjavik-Keflavik Airport on a daily basis.

  • Which is the best airline for flights from Denver to Reykjavik, United Airlines or Icelandair?

    The two airlines most popular with KAYAK users for flights from Denver to Reykjavik are United Airlines and Icelandair. With an average price for the route of $1,001 and an overall rating of 7.4, United Airlines is the most popular choice. Icelandair is also a great choice for the route, with an average price of $642 and an overall rating of 7.0.

  • How does KAYAK find such low prices on flights from Denver to Reykjavik-Keflavik Airport?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Denver to Reykjavik-Keflavik Airport.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Denver to Reykjavik-Keflavik Airport?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Reykjavik-Keflavik Airport from Denver is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Denver to Reykjavik-Keflavik Airport?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Reykjavik-Keflavik Airport with an airline and back to Denver with another airline. Booking your flights between Denver and KEF can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Denver to Reykjavik-Keflavik Airport?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Reykjavik-Keflavik Airport from Denver up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

KAYAK’s top tips for finding a cheap flight from Denver to Reykjavik Keflavik Intl Airport

  • Looking for a cheap flight? 25% of our users found flights on this route for $225 or less one-way and $471 or less round-trip.

Prefer to fly direct from Denver to Reykjavik-Keflavik Airport?

 
Direct data is based off flight results for the next 60 days. Find direct flights from all airlines flying direct from Denver Intl to Reykjavik Keflavik Intl.
Find which airlines fly direct from Denver Intl Airport to Reykjavik Keflavik Intl Airport, which days they fly and book direct flights.

Direct departures

Denver Intl to Reykjavik Keflavik Intl

Monday

Icelandair

Icelandair

Tuesday

Icelandair

Icelandair

Wednesday

Icelandair

Icelandair

Thursday

Icelandair

Icelandair

Friday

Icelandair

Icelandair

Saturday

Icelandair

Icelandair

Sunday

Icelandair

Icelandair

See more direct flights

Direct returns

Reykjavik Keflavik Intl to Denver Intl

Monday

Icelandair

Icelandair

Tuesday

Icelandair

Icelandair

Wednesday

Icelandair

Icelandair

Thursday

Icelandair

Icelandair

Friday

Icelandair

Icelandair

Saturday

Icelandair

Icelandair

Sunday

Icelandair

Icelandair

See more direct flights

Reviews of the top airlines flying from Denver to Reykjavik

 
See real verified KAYAK customer reviews for airlines flying from Denver to Reykjavik. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Denver to Reykjavik? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.4
United AirlinesOverall score based on 8852 reviews
7.0Entertainment
6.6Food
8.1Crew
7.3Comfort
7.7Boarding
Airline reviews

Impressed with the service despite turbulence because of the weather. Both flights arrived before their scheduled times.

10.0 ExcellentAnonymous, Jun 2025DEN - BOS
Read more United Airlines reviews

Impressed with the service despite turbulence because of the weather. Both flights arrived before their scheduled times.

Great experience…left a bit behind schedule but made up fir that in the air and landed 10 minutes early 😁

The seat and leg room was not good. The food and beverage service was good.

For economy, it was very good. Staff was great, they even let some of us change seats for more leg room... Put an empty seat between us which was fantastic for a 12hr flight. Onboard entertainment was excellent, I think over 200 choices of movies/tv/etc The bad was the barely/nonfunctional wifi that cost either $16.99 or 1700 miles (full flight). It was atrocious... Definitely the worst of the last 3 long haul major airlines I was on the last few months.

Electric plugs didn't work. Entertainment system wasn't working

The design of the light switch on the arm rest is ridiculous.

The gate attendant let me walk right by her with a bag too big for the overhead compartment

Overall, it was a good experience. Boarding was good and there was plenty of overhead bin space for everyone’s carryons (even when we boarded toward the end). Only improvement would be to offer trash service more regularly.

David went above and beyond to make our flight the best that it could be

No food service almost missed because of first flight delays

Everything was good. Only issue comes from being vegan and flying. The food options are super limited.

Overall good for an economy fare. IMO the movie selection could be improved. Great that you can now connect bluetooth headphones to the entertainment system.

For a four hour flight, I was disappointed that everything was for purchase except for coffee, tea, or water. The disembarking in Iceland was so inefficient and time-consuming. We landed and stopped in the middle of the tarmac, had to disembark in the rain, and then squeeze into a bus which took us to the airport. Crazy! How does that work in winter?

Paid for a Premium seat...minimal recline, no footrest. Maybe slightly wider than a cheap economy seat. Zero chance of getting any rest on this plane

Seats in premier saga class were narrow and hard. Very uncomfortable for a 5-hour flight.

Iceland airlines doesn't provide any meal on flight to and from New York, except water and soda. Airline over charge for checking in luggage. I'm really upset.

I had an exit row and so was Comfortable on the long flight.

For an economy lite experience, it's by far the best I've had. New planes, clean, great destinations. Very happy to have discovered Iceland Air.

Smooth efficient airline. Think they should have their own bag drop as the queue took 30mins to bmscan and drop

No food was served for 7.5 hrs flight. When our flight changed to other airlines due to wether issue, our seats booked with no checked in luggage when I already payed for. We end up to pay 90 euro per suitcase.

Everything you need to know for your flight from Denver to Reykjavik

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