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Keflavik Intl

$268+ 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 7/22. Fares are subject to change and may not be available on all flights or dates of travel.
DEN — KEF
Jun 17 — Jun 241
Tue 6/17
Tue 6/24
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 April, booked 57 days in advance, depart on a Tuesday or Wednesday 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 June 12, 2025.

Round-trip from

$541
(FlightHub)

One-way from

$268
(Trip.com)

Popular in

November

Cheapest in

February

Average price

$698

Good round-trip deal

$474 or less

Good one-way deal

$218 or less
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 ($68 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($24 potential savings vs. average RT price).
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Average for round-trip flights in June 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 June 12, 2025.

This deal was found by Cheapflights users on 6/10. 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.
Tue 10/214:40 pmDEN - KEF
Nonstop7h 20mIcelandair
Sun 10/264:55 pmKEF - DEN
Nonstop8h 05mIcelandair
Deal found 6/10$540
This Mytrip deal was found by Cheapflights users on 6/12. 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.
Sun 10/57:05 pmDEN - KEF
2 stops31h 10mMultiple Airlines
Thu 10/99:35 amKEF - DEN
1 stop31h 49mMultiple Airlines
Deal found 6/12$544
This Mytrip deal was found by Cheapflights users on 6/12. 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.
Sun 9/1412:15 pmDEN - KEF
1 stop14h 00mWestJet
Thu 9/189:35 amKEF - DEN
1 stop31h 49mWestJet
Deal found 6/12$577
This United Airlines deal was found by Cheapflights users on 6/10. 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.
Tue 8/128:55 pmDEN - KEF
2 stops29h 15mUnited Airlines
Tue 8/199:50 amKEF - DEN
2 stops34h 34mUnited Airlines
Deal found 6/10$583
This Air Canada deal was found by Cheapflights users on 6/11. 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.
Sun 8/39:40 amDEN - KEF
2 stops16h 35mAir Canada
Sun 8/249:50 amKEF - DEN
2 stops28h 52mAir Canada
Deal found 6/11$598
This American Airlines deal was found by Cheapflights users on 6/10. 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.
Wed 10/296:30 pmDEN - KEF
1 stop34h 25mAmerican Airlines
Wed 11/511:45 amKEF - DEN
2 stops27h 35mAmerican Airlines
Deal found 6/10$623
This Lufthansa deal was found by Cheapflights users on 6/10. 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.
Thu 11/65:50 pmDEN - KEF
1 stop14h 55mLufthansa
Fri 11/144:50 pmKEF - DEN
1 stop30h 10mLufthansa
Deal found 6/10$629
This KLM deal was found by Cheapflights users on 6/12. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/1312:20 pmDEN - KEF
1 stop15h 10mKLM
Sun 9/2111:25 amKEF - DEN
1 stop12h 57mKLM
Deal found 6/12$630
This British Airways deal was found by Cheapflights users on 6/10. 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.
Wed 11/55:30 pmDEN - KEF
1 stop34h 25mBritish Airways
Thu 11/1311:40 amKEF - DEN
1 stop34h 45mBritish Airways
Deal found 6/10$633
This Delta deal was found by Cheapflights users on 6/11. 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.
Sat 9/1312:00 pmDEN - KEF
2 stops15h 30mDelta
Mon 9/228:45 amKEF - DEN
2 stops12h 45mDelta
Deal found 6/11$634
This Finnair deal was found by Cheapflights users on 6/12. 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.
Wed 12/105:30 pmDEN - KEF
2 stops32h 45mFinnair
Sun 12/1410:00 amKEF - DEN
2 stops36h 25mFinnair
Deal found 6/12$692
This Virgin Atlantic deal was found by Cheapflights users on 6/10. 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 Virgin Atlantic is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/16:30 amDEN - KEF
1 stop21h 00mVirgin Atlantic
Thu 10/911:25 amKEF - DEN
1 stop12h 57mVirgin Atlantic
Deal found 6/10$697

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 June 12, 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

Tue 10/21

4:40 pm-6:00 am

Nonstop7h 20m

Reykjavik Keflavik Intl

Sun 10/26

4:55 pm-7:00 pm

Nonstop8h 05m

$540

DenverReykjavik

DEN - KEF

DENKEF

Denver Intl

Sun 10/5

7:05 pm-8:15 am

2 stops31h 10m

Reykjavik Keflavik Intl

Thu 10/9

9:35 am-11:24 am

1 stop31h 49m

$544

DenverReykjavik

DEN - KEF

DENKEF

Denver Intl

Sun 9/14

12:15 pm-8:15 am

1 stop14h 00m

Reykjavik Keflavik Intl

Thu 9/18

9:35 am-11:24 am

1 stop31h 49m

$577

DenverReykjavik

DEN - KEF

DENKEF

Denver Intl

Tue 8/12

8:55 pm-8:10 am

2 stops29h 15m

Reykjavik Keflavik Intl

Tue 8/19

9:50 am-2:24 pm

2 stops34h 34m

$583

DenverReykjavik

DEN - KEF

DENKEF

Denver Intl

Sun 8/3

9:40 am-8:15 am

2 stops16h 35m

Reykjavik Keflavik Intl

Sun 8/24

9:50 am-8:00 pm

1 stop16h 10m

$598

DenverReykjavik

DEN - KEF

DENKEF

Denver Intl

Wed 10/29

6:30 pm-10:55 am

1 stop34h 25m

Reykjavik Keflavik Intl

Wed 11/5

11:45 am-8:20 am

2 stops27h 35m

$623

DenverReykjavik

DEN - KEF

DENKEF

Denver Intl

Thu 11/6

5:50 pm-3:45 pm

1 stop14h 55m

Reykjavik Keflavik Intl

Sun 11/9

4:45 pm-4:00 pm

1 stop30h 15m

$629

DenverReykjavik

DEN - KEF

DENKEF

Denver Intl

Sat 9/13

12:20 pm-9:30 am

1 stop15h 10m

Reykjavik Keflavik Intl

Sun 9/21

11:25 am-6:22 pm

1 stop12h 57m

$630

DenverReykjavik

DEN - KEF

DENKEF

Denver Intl

Wed 11/5

5:30 pm-10:55 am

1 stop34h 25m

Reykjavik Keflavik Intl

Thu 11/13

11:40 am-3:25 pm

1 stop34h 45m

$633

DenverReykjavik

DEN - KEF

DENKEF

Denver Intl

Sat 9/13

12:00 pm-9:30 am

2 stops15h 30m

Reykjavik Keflavik Intl

Sat 9/20

11:25 am-10:15 pm

2 stops16h 50m

$634

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/11

Showing 1-10 of 22 results
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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 June 9, 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 56 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 June is currently the most expensive (average of $659). 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 June 12, 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 at noon tend to be the most expensive. A flight in the afternoon could potentially save you up to 22% 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.

Weekly flight availability from Denver to Reykjavik Keflavik Intl Airport

Explore weekly flight availability from Denver to Keflavik Intl. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated June 12, 2025.

The most flights from DEN to KEF are scheduled on a Tuesday (2 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (1 on average).

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 June 12, 2025.
Read reviews from past customers who have flown Alaska Airlines, Delta and KLM 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.
Alaska Airlines
8.0
Very good
10,000 reviews

Overall

8.0

Entertainment

7.1

Food

7.1

Boarding

8.1

Comfort

7.8

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Surinder,May 2025

SEA - YYZ

My wife wanted the aile seat and I always prefer window seat. Luckily we both got the best seats we wanted. The plane was very nice and we enjoyed the best take off and the smooth landing at Toronto. All the services by the staff inside the aeroplane were very nice well appreciated. Thanks again and hope to see you soon.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Overall

8.0

Entertainment

7.1

Food

7.1

Boarding

8.1

Comfort

7.8

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Surinder,May 2025

SEA - YYZ

My wife wanted the aile seat and I always prefer window seat. Luckily we both got the best seats we wanted. The plane was very nice and we enjoyed the best take off and the smooth landing at Toronto. All the services by the staff inside the aeroplane were very nice well appreciated. Thanks again and hope to see you soon.
Delta
8.0
Very good
7,950 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Overall

8.0

Entertainment

7.1

Food

7.1

Boarding

8.1

Comfort

7.8

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Surinder,May 2025

SEA - YYZ

My wife wanted the aile seat and I always prefer window seat. Luckily we both got the best seats we wanted. The plane was very nice and we enjoyed the best take off and the smooth landing at Toronto. All the services by the staff inside the aeroplane were very nice well appreciated. Thanks again and hope to see you soon.
KLM
7.8
Good
1,358 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Overall

8.0

Entertainment

7.1

Food

7.1

Boarding

8.1

Comfort

7.8

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Surinder,May 2025

SEA - YYZ

My wife wanted the aile seat and I always prefer window seat. Luckily we both got the best seats we wanted. The plane was very nice and we enjoyed the best take off and the smooth landing at Toronto. All the services by the staff inside the aeroplane were very nice well appreciated. Thanks again and hope to see you soon.
United Airlines
7.4
Good
8,790 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Overall

8.0

Entertainment

7.1

Food

7.1

Boarding

8.1

Comfort

7.8

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Surinder,May 2025

SEA - YYZ

My wife wanted the aile seat and I always prefer window seat. Luckily we both got the best seats we wanted. The plane was very nice and we enjoyed the best take off and the smooth landing at Toronto. All the services by the staff inside the aeroplane were very nice well appreciated. Thanks again and hope to see you soon.
Virgin Atlantic
7.4
Good
652 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Overall

8.0

Entertainment

7.1

Food

7.1

Boarding

8.1

Comfort

7.8

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Surinder,May 2025

SEA - YYZ

My wife wanted the aile seat and I always prefer window seat. Luckily we both got the best seats we wanted. The plane was very nice and we enjoyed the best take off and the smooth landing at Toronto. All the services by the staff inside the aeroplane were very nice well appreciated. Thanks again and hope to see you soon.

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. 3 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 1 outbound flight to Reykjavik Keflavik Intl per day.

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

    Currently priced at $541, 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 Air Canada - these airlines can fly you to your destination from $574 and $579, respectively. Icelandair is priced at 18% 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 WestJet, with whom users have recently found tickets for as low as $268. However, be on the lookout for offers from Icelandair and Virgin Atlantic, 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 $1,684 for a flight from Denver to Reykjavik Keflavik Intl Airport. The cheapest flight overall is $173 while the most popular route, (Denver Intl - Reykjavik Keflavik Intl) is currently priced at $517.

  • 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 June is currently the most expensive (average of $659). 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 3 airlines flying from Denver to Keflavik Intl

Discover the top 3 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 June 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapest$499Average$713FlexibilityNo cancel feeOn-time67%
IcelandairCheapest$524Average$647FlexibilityNo cancel feeOn-time76%
United AirlinesCheapest$659Average$962FlexibilityNo cancel feeOn-time69%

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