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Keflavik Intl

$366+ Cheap flights from Colorado 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 1/23. Fares are subject to change and may not be available on all flights or dates of travel.
DEN — KEF
Jan 20 — Jan 271
Tue 1/20
Tue 1/27
1 adult, Economy
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Cheap flight deals from Colorado to Keflavik Intl

Cheapest flights from Colorado to Keflavik Intl
Explore the most affordable flight options available from Colorado to Keflavik Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 21, 2025.

This CrystalTravel deal was found by Cheapflights users on 12/20. 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 CrystalTravel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/243:40 pmDEN - KEF
Nonstop7h 25mIcelandair
Fri 12/264:55 pmKEF - DEN
Nonstop8h 10mIcelandair
Deal found 12/20$709
This Cheapflightsfares deal was found by Cheapflights users on 12/19. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/203:40 pmDEN - KEF
Nonstop7h 25mIcelandair
Sat 12/274:55 pmKEF - DEN
Nonstop8h 10mIcelandair
Deal found 12/19$1,105
This Expedia deal was found by Cheapflights users on 12/20. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/246:02 amDEN - KEF
1 stop17h 13mMultiple Airlines
Fri 12/264:55 pmKEF - DEN
Nonstop8h 10mMultiple Airlines
Deal found 12/20$1,112
This Alaska Airlines deal was found by Cheapflights users on 12/20. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/246:02 amDEN - KEF
1 stop17h 13mAlaska Airlines
Fri 12/265:00 pmKEF - DEN
1 stop28h 50mAlaska Airlines
Deal found 12/20$1,134
This FlightHub deal was found by Cheapflights users on 12/19. 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.
Sat 12/2010:40 pmDEN - KEF
1 stop16h 05mMultiple Airlines
Sat 12/274:55 pmKEF - DEN
Nonstop8h 10mMultiple Airlines
Deal found 12/19$1,259
This Kiwi.com deal was found by Cheapflights users on 12/20. 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.
Wed 12/243:40 pmDEN - KEF
Nonstop7h 25mMultiple Airlines
Sun 12/284:30 pmKEF - DEN
1 stop23h 26mMultiple Airlines
Deal found 12/20$1,265
This Ovago deal was found by Cheapflights users on 12/20. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/283:40 pmDEN - KEF
Nonstop7h 25mIcelandair
Mon 12/294:55 pmKEF - DEN
Nonstop8h 10mIcelandair
Deal found 12/20$1,398
This Cheapflightsfares deal was found by Cheapflights users on 12/19. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/203:40 pmDEN - KEF
Nonstop7h 25mIcelandair
Mon 12/294:55 pmKEF - DEN
Nonstop8h 10mIcelandair
Deal found 12/19$1,409

Find flight deals from Colorado to Keflavik Intl

Keep the following information in mind while searching for Colorado to Keflavik Intl flight deals. Data was last updated December 21, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$499
(Kiwi.com)

One-way from

$366
(Kiwi.com)

Popular in

January

Cheapest in

February

Average price

$672

Good round-trip deal

$460 or less

Good one-way deal

$315 or less
Provider with most accurate pricing for Denver Intl-Reykjavik (REK) flight deals.
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Provider most trusted by Cheapflights users for Denver Intl-Reykjavik (REK) flights.
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From Colorado to Reykjavik Keflavik Intl
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One-way flight from Colorado to Reykjavik Keflavik Intl
Search Deals
Highest demand for flights based on searches. 2% potential increase in price ($15 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 0% potential price decrease ($7 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
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Price to beat on a round-trip flight from Colorado to Reykjavik Keflavik Intl.
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Price to beat on a one-way flight from Colorado to Reykjavik Keflavik Intl.
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Cheapflights Fare Finder

 
Customize your flight search to find flights from Colorado 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 December 21, 2025.
Use the filters below to find and compare flights from Colorado to Reykjavik Keflavik Intl Airport that are best for you.

Fly from

Colorado

Fly to

Keflavik Intl

Route

Depart

Return

Price

DenverReykjavik

DEN - KEF

DENKEF

Denver Intl

Wed 4/8

6:40 am-9:30 am

1 stop20h 50m

Reykjavik Keflavik Intl

Wed 4/22

11:25 am-6:34 pm

1 stop13h 09m

$580

DenverReykjavik

DEN - KEF

DENKEF

Denver Intl

Wed 4/1

6:40 am-9:30 am

1 stop20h 50m

Reykjavik Keflavik Intl

Mon 4/6

11:25 am-10:18 pm

2 stops16h 53m

$592

DenverReykjavik

DEN - KEF

DENKEF

Denver Intl

Fri 5/1

12:20 pm-9:30 am

1 stop15h 10m

Reykjavik Keflavik Intl

Fri 5/8

11:25 am-10:49 pm

1 stop17h 24m

$600

DenverReykjavik

DEN - KEF

DENKEF

Denver Intl

Wed 4/29

6:40 am-9:30 am

1 stop20h 50m

Reykjavik Keflavik Intl

Sun 5/3

11:25 am-7:42 pm

1 stop14h 17m

$602

DenverReykjavik

DEN - KEF

DENKEF

Denver Intl

Thu 4/30

12:44 pm-9:30 am

1 stop14h 46m

Reykjavik Keflavik Intl

Mon 5/4

11:25 am-7:42 pm

1 stop14h 17m

$602

DenverReykjavik

DEN - KEF

DENKEF

Denver Intl

Sun 4/26

12:44 pm-9:30 am

1 stop14h 46m

Reykjavik Keflavik Intl

Sun 5/3

11:25 am-10:49 pm

1 stop17h 24m

$602

DenverReykjavik

DEN - KEF

DENKEF

Denver Intl

Mon 4/27

6:05 am-9:30 am

2 stops21h 25m

Reykjavik Keflavik Intl

Thu 5/7

11:25 am-10:49 pm

1 stop17h 24m

$605

DenverReykjavik

DEN - KEF

DENKEF

Denver Intl

Fri 5/1

1:35 pm-9:30 am

2 stops13h 55m

Reykjavik Keflavik Intl

Fri 5/8

8:50 am-6:03 pm

2 stops15h 13m

$605

DenverReykjavik

DEN - KEF

DENKEF

Denver Intl

Fri 5/1

1:25 pm-9:30 am

2 stops14h 05m

Reykjavik Keflavik Intl

Sun 5/10

11:25 am-10:31 pm

2 stops17h 06m

$607

DenverReykjavik

DEN - KEF

DENKEF

Denver Intl

Sun 4/26

6:00 am-9:30 am

2 stops21h 30m

Reykjavik Keflavik Intl

Sun 5/3

11:25 am-12:26 am

2 stops19h 01m

$607

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/20

Showing 1-10 of 30 results
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Best time to book a flight from Colorado to Keflavik Intl

Have a flexible travel schedule? Discover the best time to fly to Keflavik Intl from Colorado 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 Colorado to Reykjavik Keflavik Intl Airport

What is the cheapest month to book a flight from Colorado to Reykjavik Keflavik Intl Airport?

Currently, November is the cheapest month in which you can book a flight from Colorado to Reykjavik Keflavik Intl Airport (average of $372). Flying from Colorado to Reykjavik Keflavik Intl Airport in December is currently the most expensive (average of $576). 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 CO to KEF?

Find hourly flight availability from Colorado 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 December 21, 2025.

When flying from Colorado to Reykjavik Keflavik Intl Airport, the time of day you fly usually plays a role in the price. Save by searching for a flight in the evening, which can drop the price by up to 33% versus a flight at noon.

What is the cheapest day to fly from Colorado to Reykjavik Keflavik Intl Airport?

Use this chart to determine the cheapest time to fly round-trip from Colorado to Keflavik Intl. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their Colorado 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.

Related info for your journey

Find useful and relevant information for your journey from Colorado to Keflavik Intl. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Colorado to Reykjavik Keflavik Intl Airport?

    A quick flight from Colorado to Reykjavik Keflavik Intl Airport can take about 20h 30m. KLM provides one of the quickest options available for as low as $815. Airlines will cover a distance of 3618 mi. This flight may include one or multiple stops.

  • What are the most popular routes from Colorado to Reykjavik Keflavik Intl Airport?

    While some choose either Colorado Springs - Reykjavik Keflavik Intl or Durango La Plata County - Reykjavik Keflavik Intl, Denver Intl - Reykjavik Keflavik Intl is the most popular route from Colorado to Reykjavik Keflavik Intl Airport.

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

    Looking for the cheapest flight from Colorado to Reykjavik Keflavik Intl Airport? While on average our users pay $1,409, our data indicates the cheapest price to be $256. The most popular route (Denver Intl - Reykjavik Keflavik Intl), is priced around $511.

  • Can I find deals for flights from Colorado to Keflavik Intl that include hotel bookings?

    Yes. In addition to deals on Colorado to Keflavik Intl flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Colorado to Keflavik Intl?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Colorado to Keflavik Intl.

  • Can I find deals for business class flights from Colorado to Keflavik Intl?

    Yes. Cheapflights offers flight deals from Colorado 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 Colorado to Reykjavik Keflavik Intl Airport?

    Currently, November is the cheapest month in which you can book a flight from Colorado to Reykjavik Keflavik Intl Airport (average of $372). Flying from Colorado to Reykjavik Keflavik Intl Airport in December is currently the most expensive (average of $576). 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.

See more FAQs

Traveling to a place near Reykjavik Keflavik Intl Airport?

Book flights to Reykjavik Keflavik Intl Airport if you plan to visit one of these locations
Keflavik
Hveragerdi

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Alternative routes for Colorado to Keflavik Intl

See prices for flight routes from nearby airports that may be better suited for you.
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Top airline flying from Colorado to Keflavik Intl

Discover the top airline that operate flights from Colorado 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 December 21, 2025.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest$422Average$622FlexibilityNo cancel feeOn-time76%

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