$257 Cheap Flights from Denver (DEN) to Reykjavik (KEF)

View $257 flight on Sun, Oct 12, 2025Opens in a new window

Popular airlines from Denver Intl. Airport (DEN) to Reykjavik–Keflavik Intl. Airport (KEF)

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Cheap Flights from Denver to Reykjavik (DEN-KEF)

Prices were available within the past 7 days and start at $257 for one-way flights and $449 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Icelandair
Fri, Nov 14 - Wed, Nov 19
DEN
Denver
KEF
Reykjavik
$449 Roundtrip, found 3 hours ago
$449
Roundtrip
found 3 hours ago
Select Icelandair flight, departing Fri, Nov 14 from Denver to Reykjavik, returning Wed, Nov 19, priced at $449 found 3 hours ago
Icelandair
Sat, Aug 23 - Fri, Aug 29
DEN
Denver
KEF
Reykjavik
$462 Roundtrip, found 5 hours ago
$462
Roundtrip
found 5 hours ago
Select Icelandair flight, departing Sat, Aug 23 from Denver to Reykjavik, returning Fri, Aug 29, priced at $462 found 5 hours ago
Icelandair
Tue, Oct 21 - Sat, Nov 8
DEN
Denver
KEF
Reykjavik
$467 Roundtrip, found 5 hours ago
$467
Roundtrip
found 5 hours ago
Select Icelandair flight, departing Tue, Oct 21 from Denver to Reykjavik, returning Sat, Nov 8, priced at $467 found 5 hours ago
Icelandair
Fri, Aug 22 - Fri, Aug 29
DEN
Denver
KEF
Reykjavik
$480 Roundtrip, found 12 hours ago
$480
Roundtrip
found 12 hours ago
Select Icelandair flight, departing Fri, Aug 22 from Denver to Reykjavik, returning Fri, Aug 29, priced at $480 found 12 hours ago
Icelandair
Sun, Oct 12 - Tue, Oct 21
DEN
Denver
KEF
Reykjavik
$484 Roundtrip, found 15 hours ago
$484
Roundtrip
found 15 hours ago
Select Icelandair flight, departing Sun, Oct 12 from Denver to Reykjavik, returning Tue, Oct 21, priced at $484 found 15 hours ago
Virgin Atlantic
Mon, Sep 22 - Tue, Sep 30
DEN
Denver
KEF
Reykjavik
$500 Roundtrip, found 5 days ago
$500
Roundtrip
found 5 days ago
Select Virgin Atlantic flight, departing Mon, Sep 22 from Denver to Reykjavik, returning Tue, Sep 30, priced at $500 found 5 days ago
Air Canada
Wed, Aug 13 - Fri, Aug 22
DEN
Denver
KEF
Reykjavik
$566 Roundtrip, found 19 hours ago
$566
Roundtrip
found 19 hours ago
Select Air Canada flight, departing Wed, Aug 13 from Denver to Reykjavik, returning Fri, Aug 22, priced at $566 found 19 hours ago
United
Thu, Aug 14 - Thu, Aug 21
DEN
Denver
KEF
Reykjavik
$573 Roundtrip, found 19 hours ago
$573
Roundtrip
found 19 hours ago
Select United flight, departing Thu, Aug 14 from Denver to Reykjavik, returning Thu, Aug 21, priced at $573 found 19 hours ago
Delta
Mon, Apr 13 - Sun, Apr 19
DEN
Denver
KEF
Reykjavik
$589 Roundtrip, found 21 hours ago
$589
Roundtrip
found 21 hours ago
Select Delta flight, departing Mon, Apr 13 from Denver to Reykjavik, returning Sun, Apr 19, priced at $589 found 21 hours ago
British Airways
Mon, Dec 1 - Mon, Dec 8
DEN
Denver
KEF
Reykjavik
$606 Roundtrip, found 2 hours ago
$606
Roundtrip
found 2 hours ago
Select British Airways flight, departing Mon, Dec 1 from Denver to Reykjavik, returning Mon, Dec 8, priced at $606 found 2 hours ago

Find the cheapest month to fly from Denver (DEN) to Reykjavik (KEF)

September is typically the cheapest month to fly

From $398 - $1,014 per traveler.

Graph displaying average flight prices per month

Alternative airports near Reykjavik

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Keflavik Intl. KEF. Cheapest option available. Average driving time to city center is 45 minutes. Flights from $586
KEF
Keflavik Intl.
Cheapest
Average driving time to city center45 min
Flights from $586
Flights from Denver (DEN) to Reykjavik (KEF)
Origin airport
Denver Intl.
Destination airport
Keflavik Intl.
Airlines serving
Air Canada, Air France, Alaska Airlines, American Airlines, Austrian Airlines, British Airways, Brussels Airlines, Delta, Icelandair, KLM, Lufthansa, Swiss International Air Lines, United, Virgin Atlantic, WestJet
Roundtrip price
$449
Distance
3558 mi
Average flight time
13 hours 17 mins

Denver to Reykjavik Flights

The cheapest times to fly from Denver to Reykjavik

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Denver to Reykjavik are during the month of November. You can find some of the cheapest flights from Denver to Reykjavik with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Denver to Reykjavik

Sunday is one of the best days to book for cheap flights from Denver to Reykjavik: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Denver to Reykjavik

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Denver to Reykjavik in 2025. You can also book with separate airlines for your outbound and return journeys, from $257 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Denver to Reykjavik flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Denver to Reykjavik airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Frequently asked questions

How much does a flight from Denver Intl. Airport (DEN) to Keflavik Intl. Airport (KEF) cost?
Grab cheap return tickets starting from $448 from Denver Intl. Airport (DEN) to Keflavik Intl. Airport (KEF). This information is based on the cheapest price found on Expedia for this return journey departing within the next three months. This airfare is for a Icelandair flight leaving DEN on August 19 2025 and touching down at KEF. The price was last updated on July 23 2025 and has not changed since.
What is the cheapest month to fly from DEN to KEF?
The cheapest flights from DEN to KEF are usually during off-peak season, when demand is lower. To save money, avoid flying during public holidays, school breaks and major local events.
Which airlines fly direct from Denver Intl. Airport (DEN) to Keflavik Intl. Airport (KEF)?
If you're departing from Denver Intl. Airport (DEN), you can take a nonstop flight to Keflavik Intl. Airport (KEF) with Icelandair.
What is the cheapest airline that flies from DEN to KEF?
Currently, the cheapest airline operating one-way flights from DEN to KEF is Icelandair. You can take off on this route from $442. This fare is based on the lowest price found on Expedia departing within the next three months. The flight takes off from DEN on October 16 2025. Prices were last updated on July 23 2025 and have not changed since.
How many flights per day from Denver Intl. Airport (DEN) to Keflavik Intl. Airport (KEF)?
On average, you can take your pick of 4 direct flights taking off from Denver Intl. Airport (DEN) to Keflavik Intl. Airport (KEF) weekly. If you can't see one that fits your travel plans, think about booking a flight with a layover. Filter your search on Expedia to include one or more stops and opt for the next best alternative.
What are the most popular departure times for flights from Denver Intl. Airport (DEN) to Keflavik Intl. Airport (KEF)?
Flights between DEN and KEF tend to be busiest at 3 PM. If you're after a more relaxed atmosphere and possibly cheaper tickets, choose a departure outside the usual busy windows.
What day of the week has the most flights from DEN to KEF?
Travel on a Sunday if you're searching for the largest selection of flights from Denver Intl. Airport (DEN) to Keflavik Intl. Airport (KEF).
What is the earliest flight from Denver Intl. Airport (DEN) to Keflavik Intl. Airport (KEF)?
Hop on the earliest flight at around 3:40PM UTC-7, leaving from Denver Intl. Airport (DEN). You'll be traveling for about 7h 25m, touching down at Keflavik Intl. Airport (KEF) at approximately 6:05AM UTC+0.
How long does it take to fly from Denver Intl. Airport (DEN) to Keflavik Intl. Airport (KEF)?
The average flight time from DEN to KEF is 7 hours and 25 minutes, covering a distance of 3,600 mi.
What airline has the least delays from DEN to KEF?
With 89% of flights usually arriving on time, Icelandair has the best on-time performance for nonstop flights from Denver Intl. Airport (DEN) to Keflavik Intl. Airport (KEF). To check your flight status and get notifications if anything changes, use the Expedia App.
What is the best time to fly from Denver Intl. Airport (DEN) to Keflavik Intl. Airport (KEF)?
Select a flight from Denver Intl. Airport (DEN) to Keflavik Intl. Airport (KEF) that takes off before 3 PM to reduce the risk of cancellations and delays. Departures after this time are on average 22% more likely to be canceled.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
What airports do you fly into for Reykjavik from Denver Intl. Airport (DEN)?
Keflavik Intl. Airport (KEF) is the only airport in Reykjavik with direct flights from Denver Intl. Airport (DEN). Consider your options and find cheap fares on Expedia.
Is it cheaper to buy a plane ticket from Denver Intl. Airport (DEN) to Keflavik Intl. Airport (KEF) last-minute?
Last-minute fares from DEN to KEF are generally more expensive. To secure the best prices, start searching for flights well ahead of time. That said, if you're flexible with your travel dates, you may score a cheap ticket right before you leave.
Is it cheaper to book a DEN to KEF flight and hotel package?
Opting for a DEN to KEF flight and hotel package tends to be cheaper than booking separately. With Expedia, you can enjoy the convenience of organizing your trip all in one place. Select from our extensive range of hotels and then add car rentals, activities and flights to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Denver Intl. Airport (DEN) to Keflavik Intl. Airport (KEF)?
If you booked your DEN to KEF flight within the last 24 hours, you may be able to modify or cancel it at no cost. Depending on the airline and the ticket type you purchased, additional charges may apply for changes after that time. Airline policies and contact information can be found in your itinerary or confirmation email. Or, visit our Customer Service portal if you want more information.

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