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Keflavik Intl

$299+ 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 5/27. Fares are subject to change and may not be available on all flights or dates of travel.
DEN — KEF
Mar 30 — Apr 61
Sun 3/30
Sun 4/6
1 adult, Economy
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Cheapflights Tip: The best prices from Denver Intl to Reykjavik Keflavik Intl are usually found in February or October, booked 76 days in advance, depart on a Tuesday or Friday and return on a Monday

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 March 25, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$555
(FlightHub)

One-way from

$344
(Kiwi.com)

Popular in

July

Cheapest in

February

Average price

$615

Good round-trip deal

$584 or less

Good one-way deal

$282 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. 9% potential increase in price ($72 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($11 potential savings vs. average RT price).
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Average for round-trip flights in March 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 March 25, 2025.

This FlightHub deal was found by Cheapflights users on 3/24. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/74:40 pmDEN - KEF
Nonstop7h 20mIcelandair
Thu 4/174:50 pmKEF - DEN
Nonstop8h 05mIcelandair
Deal found 3/24$555
This Kiwi.com deal was found by Cheapflights users on 3/23. 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 4/76:00 amDEN - KEF
1 stop16h 55mMultiple Airlines
Tue 4/153:05 pmKEF - DEN
1 stop34h 33mMultiple Airlines
Deal found 3/23$556
This Gurufare deal was found by Cheapflights users on 3/24. 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 Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/812:15 pmDEN - KEF
1 stop14h 00mWestJet
Tue 7/159:35 amKEF - DEN
1 stop31h 52mWestJet
Deal found 3/24$557
This Finnair deal was found by Cheapflights users on 3/23. 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 Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/312:52 pmDEN - KEF
2 stops37h 23mFinnair
Wed 11/1210:00 amKEF - DEN
2 stops38h 42mFinnair
Deal found 3/23$559
This American Airlines deal was found by Cheapflights users on 3/24. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/35:30 pmDEN - KEF
1 stop34h 20mAmerican Airlines
Wed 11/1211:45 amKEF - DEN
1 stop34h 40mAmerican Airlines
Deal found 3/24$564
This British Airways deal was found by Cheapflights users on 3/24. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/25:30 pmDEN - KEF
1 stop34h 25mBritish Airways
Wed 11/1211:45 amKEF - DEN
1 stop34h 40mBritish Airways
Deal found 3/24$594
This Air Canada deal was found by Cheapflights users on 3/24. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/2711:35 amDEN - KEF
2 stops15h 00mAir Canada
Sat 10/410:00 amKEF - DEN
2 stops30h 18mAir Canada
Deal found 3/24$634
This Delta deal was found by Cheapflights users on 3/24. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/2510:30 amDEN - KEF
1 stop13h 50mDelta
Sun 10/511:25 amKEF - DEN
1 stop13h 13mDelta
Deal found 3/24$696
This United Airlines deal was found by Cheapflights users on 3/23. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/58:17 amDEN - KEF
2 stops16h 43mUnited Airlines
Fri 9/1210:00 amKEF - DEN
2 stops34h 23mUnited Airlines
Deal found 3/23$709
This Lufthansa deal was found by Cheapflights users on 3/24. 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 Lufthansa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/65:40 pmDEN - KEF
1 stop23h 55mLufthansa
Wed 4/1612:25 amKEF - DEN
1 stop21h 30mLufthansa
Deal found 3/24$726
This Air France deal was found by Cheapflights users on 3/24. 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 Air France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/2111:59 amDEN - KEF
2 stops15h 31mAir France
Mon 4/2811:25 amKEF - DEN
2 stops18h 15mAir France
Deal found 3/24$749

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 March 25, 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

Mon 4/7

4:40 pm-6:00 am

Nonstop7h 20m

Reykjavik Keflavik Intl

Thu 4/17

4:50 pm-6:55 pm

Nonstop8h 05m

$555

DenverReykjavik

DEN - KEF

DENKEF

Denver Intl

Mon 4/7

6:00 am-4:55 am

1 stop16h 55m

Reykjavik Keflavik Intl

Tue 4/15

3:05 pm-7:38 pm

1 stop34h 33m

$556

DenverReykjavik

DEN - KEF

DENKEF

Denver Intl

Wed 5/28

12:15 pm-8:15 am

1 stop14h 00m

Reykjavik Keflavik Intl

Thu 6/5

9:35 am-6:52 pm

1 stop15h 17m

$560

DenverReykjavik

DEN - KEF

DENKEF

Denver Intl

Sun 6/22

7:05 am-9:30 am

1 stop20h 25m

Reykjavik Keflavik Intl

Tue 7/1

9:30 am-3:35 pm

1 stop12h 05m

$699

DenverReykjavik

DEN - KEF

DENKEF

Denver Intl

Wed 4/30

2:00 pm-8:00 am

2 stops36h 00m

Reykjavik Keflavik Intl

Tue 5/13

5:15 pm-11:33 pm

2 stops36h 18m

$717

DenverReykjavik

DEN - KEF

DENKEF

Denver Intl

Sun 4/6

5:40 pm-11:35 pm

1 stop23h 55m

Reykjavik Keflavik Intl

Wed 4/16

12:25 am-3:55 pm

1 stop21h 30m

$726

DenverReykjavik

DEN - KEF

DENKEF

Denver Intl

Mon 4/21

11:59 am-9:30 am

2 stops15h 31m

Reykjavik Keflavik Intl

Mon 4/28

11:25 am-11:40 pm

2 stops18h 15m

$749

DenverReykjavik

DEN - KEF

DENKEF

Denver Intl

Thu 5/29

10:31 am-6:20 am

1 stop13h 49m

Reykjavik Keflavik Intl

Sat 6/7

9:30 am-3:34 pm

1 stop12h 04m

$774

DenverReykjavik

DEN - KEF

DENKEF

Denver Intl

Tue 5/27

6:40 am-4:55 am

1 stop16h 15m

$299

DenverReykjavik

DEN - KEF

DENKEF

Denver Intl

Tue 4/8

4:40 pm-6:00 am

Nonstop7h 20m

$383

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/23

Showing 1-10 of 20 results
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 March.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice Accuracy3 starsTrust Score*1 star

*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 March 21, 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 76 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 $328). Flying from Denver to Reykjavik Keflavik Intl Airport in July is currently the most expensive (average of $651). 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 March 25, 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 in the evening 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.

Rainfall in Keflavik Intl by month

Plan your trip to Keflavik Intl by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Reykjavik Keflavik Intl Airport ranges from 1.6 - 3.1 inches per month. January is typically the wettest month, when rainfall can reach 3.1 in. May is typically the driest time to visit Reykjavik Keflavik Intl Airport when rainfall is around 1.6 in.

Temperature in Keflavik Intl by month

Plan your trip to Keflavik Intl by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Reykjavik Keflavik Intl Airport, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 51.8 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 32.0 F).

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 March 25, 2025.
Read reviews from past customers who have flown Delta, KLM and Finnair from Denver to Reykjavik. In addition to providing an overall rating, users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,890 reviews

Overall

8.0

Entertainment

7.9

Comfort

8.0

Crew

8.5

Food

7.3

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Delta
8.0
Very good
7,890 reviews
Delta
8.0
Very good
7,890 reviews

Overall

8.0

Entertainment

7.9

Comfort

8.0

Crew

8.5

Food

7.3

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
KLM
7.8
Good
1,318 reviews
Delta
8.0
Very good
7,890 reviews

Overall

8.0

Entertainment

7.9

Comfort

8.0

Crew

8.5

Food

7.3

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Finnair
7.6
Good
1,266 reviews
Delta
8.0
Very good
7,890 reviews

Overall

8.0

Entertainment

7.9

Comfort

8.0

Crew

8.5

Food

7.3

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Air France
7.4
Good
1,423 reviews
Delta
8.0
Very good
7,890 reviews

Overall

8.0

Entertainment

7.9

Comfort

8.0

Crew

8.5

Food

7.3

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
United Airlines
7.4
Good
8,605 reviews
Delta
8.0
Very good
7,890 reviews

Overall

8.0

Entertainment

7.9

Comfort

8.0

Crew

8.5

Food

7.3

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

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. 4 airlines 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.

  • What are the cheapest airlines flying from Denver to Reykjavik Keflavik Intl Airport round-trip?

    Currently priced at $555, 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. Search Cheapflights for deals from WestJet and Delta - these airlines can fly you to your destination from $560 and $699, respectively. Icelandair is priced at 15% lower than the current average price of a flight leaving 3 months from now.

  • What are the cheapest airlines to fly from Denver to Reykjavik Keflavik Intl Airport one-way?

    The cheapest airline one-way is Icelandair, with whom users have recently found tickets for as low as $383. However, be on the lookout for offers from Lufthansa and Delta, as they are both options that can get you from Denver to Reykjavik Keflavik Intl Airport for a low price.

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

    On average you can expect to pay $1,468 for a flight from Denver to Reykjavik Keflavik Intl Airport. The cheapest flight overall is $236 while the most popular route, (Denver Intl - Reykjavik Keflavik Intl) is currently priced at $552.

  • 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 $328). Flying from Denver to Reykjavik Keflavik Intl Airport in July is currently the most expensive (average of $651). 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.

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Top 4 airlines flying from Denver to Keflavik Intl

Discover the top 4 airlines 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 March 25, 2025.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapest$499Average$703FlexibilityNo cancel feeOn-time67%
IcelandairCheapest$547Average$664FlexibilityNo cancel feeOn-time76%
United AirlinesCheapest$592Average$760FlexibilityNo cancel feeOn-time69%
DeltaCheapest$646Average$782FlexibilityNo cancel feeOn-timeN/A
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