DEN - KEF

$224 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 7/5. 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.
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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 Flight Deals 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.

Recent round-trip flight deals from Denver to Reykjavik

KAYAK's recommended round-trip deals from the most popular airlines that fly from Denver to Reykjavik.
Discover the best prices for you by selecting your travel dates on KAYAK.
 Logo
10:52 am - 4:55 amDEN-KEF
12h 03m1 stop
 Logo
9:35 am - 6:52 pmKEF-DEN
15h 17m1 stop
Wed, Jul 30 - Fri, Aug 8
 Logo
10:52 am - 4:55 amDEN-KEF
12h 03m1 stop
 Logo
9:35 am - 6:52 pmKEF-DEN
15h 17m1 stop
Wed, Jul 30 - Fri, Aug 8
Icelandair Logo
4:40 pm - 6:00 amDEN-KEF
7h 20mnonstop
Icelandair Logo
4:50 pm - 6:55 pmKEF-DEN
8h 05mnonstop
$518Icelandair
Find Deal
Sat, Sep 27 - Sat, Oct 4
Icelandair Logo
4:40 pm - 6:00 amDEN-KEF
7h 20mnonstop
Icelandair Logo
4:50 pm - 6:55 pmKEF-DEN
8h 05mnonstop
$520Icelandair
Find Deal
Thu, Oct 2 - Tue, Oct 7
United Airlines Logo
8:55 pm - 8:30 amDEN-KEF
29h 35m1 stop
United Airlines Logo
9:30 am - 10:21 amKEF-DEN
30h 51m1 stop
$618United Airlines
Find Deal
Sun, Aug 3 - Sun, Aug 24
Air Canada Logo
7:50 am - 8:10 amDEN-KEF
18h 20m2 stops
Air Canada Logo
9:30 am - 7:35 pmKEF-DEN
16h 05m2 stops
$625Air Canada
Find Deal
Wed, Aug 13 - Fri, Aug 22
Air Canada Logo
9:40 am - 8:15 amDEN-KEF
16h 35m2 stops
Air Canada Logo
9:30 am - 6:20 pmKEF-DEN
14h 50m1 stop
$631Air Canada
Find Deal
Sun, Aug 3 - Sun, Aug 24
United Airlines Logo
2:45 pm - 8:30 amDEN-KEF
11h 45m1 stop
United Airlines Logo
10:00 am - 12:43 pmKEF-DEN
32h 43m2 stops
$658United Airlines
Find Deal
Wed, Sep 10 - Thu, Sep 18
Delta Logo
11:59 pm - 9:30 amDEN-KEF
27h 31m1 stop
Delta Logo
11:25 am - 6:22 pmKEF-DEN
12h 57m1 stop
$705Delta
Find Deal
Wed, Oct 1 - Wed, Oct 8
Delta Logo
12:59 am - 9:30 amDEN-KEF
26h 31m2 stops
Delta Logo
11:25 am - 9:40 pmKEF-DEN
16h 15m2 stops
$714Delta
Find Deal
Tue, Sep 16 - Sat, Sep 27
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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’s the cheapest day of the week to fly from Denver to Reykjavik-Keflavik Airport?

The average price of all round-trip flights from Denver to Reykjavik Keflavik Intl Airport clicked on KAYAK for each day over the last 12 months.

If you are looking for a flight deal from Denver to Reykjavik-Keflavik Airport, look for departures on Tuesdays and avoid leaving on a Saturday, as it's usually the priciest day. When flying back from Reykjavik-Keflavik Airport, Tuesday is the cheapest day to fly and Saturday is the most expensive.

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 July and June, where the average cost of round-trip tickets is $754 and $741 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 $936 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 9 weeks before departure. For the absolute cheapest price, our data suggests you should book 15 weeks before departure.

Good to know

Low seasonJanuary
High seasonAugust
Cheapest flight$224
Best time to beat the crowds with an average 3% drop in price.
Most popular time to fly and prices are also 0% lower on average.
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 $224 for a one-way ticket and $491 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, American Airlines, and Finnair 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, Delta or United Airlines?

    The two airlines most popular with KAYAK users for flights from Denver to Reykjavik are Delta and United Airlines. With an average price for the route of $720 and an overall rating of 8.0, Delta is the most popular choice. United Airlines is also a great choice for the route, with an average price of $771 and an overall rating of 7.4.

  • 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 $308 or less one-way and $563 or less round-trip.

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

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
See more direct flights

Top 4 airlines serving 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.
8.0
DeltaOverall score based on 7936 reviews
7.9Comfort
8.2Boarding
7.3Food
8.5Crew
7.9Entertainment
Airline reviews

Our bag was lost so that made unnecessary chaos On our trip

6.0 GoodBarbara, Apr 2025JFK - FCO
Read more Delta reviews

Our bag was lost so that made unnecessary chaos On our trip

Delta is my preferred airline. I've traveled with them for years. On time in most cases, good communication, easy to use app. Most planes are pretty nice. I was on a CRJ 700/900 however, which was pretty badly aged inside and needed a refresh. No infotainment, unreliable wifi, best to download before boarding or bring a book. Food choices are really just snacks on this flight, nice variety but about what you'd expect. Great staff and prompt in departure and early arrival too. Overall quite satisfied.

Crew was friendly Love the entertainment in the seat head rest.

Delta flight was on time, seats were comfortable, and crew was nice.

This had nothing to do with Delta… The flights were on time and flawless. The service was excellent. We purchased seats in (aisle/middle) comfort plus since this was a cross country flight. Unfortunately, the woman seated at the window was 300+ pounds and, as might be expected, covered up about a third of the middle seat also. there was absolutely nothing that Delta could have done about that… I just don’t know what the answer should be. If you purchase a seat, you should should be able to use the entire seat and not just the portion that someone else is not sitting/oozing in. Disappointing…there should be something that could be done….I'm just not sure what solution could be.

Delayed take-off. Very small plane so very scary with lots of bumps during the flight. Would never fly Delta on short flights in small 80 seaters plane again! Felt relieved when landed.

The worst part was I was NOT allowed in the lounge even though I was holding a first class ticket and have a premium American Express card. I have flown Business or First Class with many airlines. Delta is the ONLY one who does not extend this courtesy to anyone except people who hold the very expensive American Express card. As a result, I won’t fly Delta if I have any other choice.

It was an overnight flight and I desperately needed coffee before we landed, but Delta does only one beverage service, and that is shortly after takeoff, not before landing at 5 am.

A little bumpy ride . No food was being provided due the the turbulence. That was ok it was a short flight to my standards.

Simply outstanding. Their new lounge for Delta One customers is a cut above the rest.

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

Had a hard time finding my assigned seat. No attendants to assist.

The negative was the wait at the airport coming back. I checked my bags in, an hour before boarding and I get the notification that my flight was delayed. Rather had gotten the notification while I was at the hotel. Then it was delayed 3 x’s. Ugh!

Plane still had screens for watching movies. Good selection too.

All was good except for the seats, not very comfy.

2.5 hour delay sitting in the plane on the tarmac, you tell me how the experience was

I hope these comments will find their way to AC customer experience team. Me and my spouse 50 years of aged coming back from 7 days perfect vacation... While boarding in FLL flight AC1621, one of the boarding agents (tall aged african american) man literelly yeld at my wife during the picture talking process. MAM ! STEP !! BACK !!! We are not illegal immegrants beying deported, nor are we in the millitary. We are customers returning home. This was unacceptable. While boarding in YYZ flight AC1154, one of the boarding agents (tall aged caucasian) man criticied with several complesant remarks my passport condition saying that I could not travel intl with it due to stain, decoloration, and BLOOD. My passport does not have blood on it! Yes it might be in less than perfect condition, but their are ways to talk to customer that does not imply not allow a boarding agent to be angry fathery like, or a custom agent looking at a suspicious individual. Both experience were less than acceptable for might I remind you a paying CUSTOMER returning home.

Short flight so no food or entertainment. Good landing at SFO and on time. We were told no carryon luggage yet lots of people were puting bags in overhead compartments. The rules need to be made more clear. I was on the first leg of an international flight and this is the first time I could not have carryon luggage.

This flight didn't happen for me because of overbooking.

My flight was overbooked and they would not let me board. I had to book another flight and pay the full amount of that flight. I did not get any help at all from Air Canada or United Airlines.

Comfortable seats and movies entertainment available. Better experience than the flight from Toronto to Denver.

Poor air traffic controller staffing led to a 50%reduction on flights so we got to wait 4 hrs for our flight! Very disorganized at the gate Poor communication with customers

It was delayed by almost 90 minutes and that messed up our plans but it was beyond UA’s control that is what we heard

Terrible experience, flight was delayed both ways. Limited compensation for the 5+ hour delay. Will not be flying Air Canada Rouge, and don’t recommend you do either.

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.

The flights were in time and the bags arrived. well done

Only serving 2 small coffee in 7.5 hrs flight with very limited choice to order food.

Booked with Kayak… Economy Class it said. I had filtered for 1 checked bag. Get to boarding and it says I have Economy Light w/ no checked bags. $136 each way for baggage now. Do not use smartfares.com. Very misleading and a terrible start to this trip.

Overall good. I was surprised how easy it was to get from plain to plain in such a short time. Food choices were not so great and quite expensive. Entertainment was ok. Flights were smooth.

Our three ski bags did not arrive and are still not delivered, one full day later. With one ski bag not traceable at all. I would not fly Iceland Air again.

Bad. Flights were late, by hours. No clear information was provided even until the delayed boarding time.

Again, lines for boarding are a problem in iceland. The flight itself was fine and very smooth. No complaints. We would definitely fly icelandair again.

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