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$473+ Cheap flights from Keflavik Intl (KEF) to Colorado

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 11/13. Fares are subject to change and may not be available on all flights or dates of travel.
KEF — DEN
Dec 4 — Dec 111
Thu 12/4
Thu 12/11
1 adult, Economy
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Find flight deals from Keflavik Intl to Colorado

Cheapest flights from Keflavik Intl to Colorado
Explore the most affordable flight options available from Keflavik Intl to Colorado. Find the lowest fares from popular airlines and budget airlines, with prices last updated on November 4, 2025.

This Justfly.com deal was found by Cheapflights users on 11/3. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/55:00 pmKEF - DEN
1 stop12h 59mIcelandair
Sun 12/143:40 pmDEN - KEF
Nonstop7h 25mIcelandair
Deal found 11/3$758
This FlightHub deal was found by Cheapflights users on 11/2. 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.
Thu 12/44:55 pmKEF - DEN
Nonstop8h 10mIcelandair
Wed 12/106:45 amDEN - KEF
1 stop16h 30mIcelandair
Deal found 11/2$762
This Icelandair deal was found by Cheapflights users on 11/3. 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 Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/54:55 pmKEF - DEN
Nonstop8h 10mMultiple Airlines
Sun 12/1412:40 pmDEN - KEF
1 stop10h 50mMultiple Airlines
Deal found 11/3$774
This Expedia deal was found by Cheapflights users on 11/2. 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 12/174:45 pmKEF - DEN
1 stop28h 23mMultiple Airlines
Wed 12/243:40 pmDEN - KEF
Nonstop7h 25mMultiple Airlines
Deal found 11/2$797
This Icelandair deal was found by Cheapflights users on 11/2. 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 Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/25:00 pmKEF - DEN
1 stop23h 05mMultiple Airlines
Mon 1/123:40 pmDEN - KEF
Nonstop7h 25mMultiple Airlines
Deal found 11/2$826

Cheap flight deals from Keflavik Intl to Colorado

Keep the following information in mind while searching for Keflavik Intl to Colorado flight deals. Data was last updated November 4, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$758
(Justfly.com)

One-way from

$473
(Mytrip)
Provider with most accurate pricing for Reykjavik (REK)-Denver Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for Reykjavik (REK)-Denver Intl flights.
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From Reykjavik Keflavik Intl to Colorado
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One-way flight from Reykjavik Keflavik Intl to Colorado
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Cheapflights Fare Finder

 
Customize your flight search to find flights from Keflavik Intl to Colorado 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 November 4, 2025.
Use the filters below to find and compare flights from Reykjavik Keflavik Intl Airport to Colorado that are best for you.

Fly from

Keflavik Intl

Fly to

Colorado

Route

Depart

Return

Price

ReykjavikDenver

KEF - DEN

KEFDEN

Reykjavik Keflavik Intl

Fri 12/5

5:00 pm-10:59 pm

1 stop12h 59m

Denver Intl

Sun 12/14

3:40 pm-6:05 am

Nonstop7h 25m

$758

ReykjavikDenver

KEF - DEN

KEFDEN

Reykjavik Keflavik Intl

Fri 12/5

4:55 pm-6:05 pm

Nonstop8h 10m

Denver Intl

Sun 12/14

12:40 pm-6:30 am

1 stop10h 50m

$774

ReykjavikDenver

KEF - DEN

KEFDEN

Reykjavik Keflavik Intl

Wed 12/17

4:45 pm-2:08 pm

1 stop28h 23m

Denver Intl

Wed 12/24

3:40 pm-6:05 am

Nonstop7h 25m

$797

ReykjavikDenver

KEF - DEN

KEFDEN

Reykjavik Keflavik Intl

Tue 12/2

5:00 pm-9:05 am

1 stop23h 05m

Denver Intl

Mon 1/12

10:45 am-6:30 am

1 stop12h 45m

$884

ReykjavikDenver

KEF - DEN

KEFDEN

Reykjavik Keflavik Intl

Fri 12/5

6:10 pm-3:30 pm

1 stop28h 20m

Denver Intl

Sun 12/14

5:25 pm-10:55 am

1 stop34h 30m

$922

ReykjavikDenver

KEF - DEN

KEFDEN

Reykjavik Keflavik Intl

Sun 4/5

4:50 pm-6:55 pm

Nonstop8h 05m

$474

ReykjavikDenver

KEF - DEN

KEFDEN

Reykjavik Keflavik Intl

Wed 11/26

4:55 pm-6:05 pm

Nonstop8h 10m

$478

ReykjavikDenver

KEF - DEN

KEFDEN

Reykjavik Keflavik Intl

Sun 12/21

4:55 pm-6:05 pm

Nonstop8h 10m

$515

ReykjavikDenver

KEF - DEN

KEFDEN

Reykjavik Keflavik Intl

Tue 1/6

5:00 pm-11:04 pm

2 stops37h 04m

$524

ReykjavikDenver

KEF - DEN

KEFDEN

Reykjavik Keflavik Intl

Fri 12/5

4:50 pm-7:09 pm

1 stop33h 19m

$529

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/4

Showing 1-10 of 13 results
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Best time to book a flight from Keflavik Intl to Colorado

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

What is the cheapest time of day to fly from KEF to CO?

Find hourly flight availability from Keflavik Intl to Colorado. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated November 4, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Reykjavik Keflavik Intl Airport to Colorado as you normally would.

Weekly flight availability from Reykjavik Keflavik Intl Airport to Colorado

Explore weekly flight availability from Keflavik Intl to Colorado. 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 November 4, 2025.

The most flights from KEF to USCO 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).

Related info for your journey

Find useful and relevant information for your journey from Keflavik Intl to Colorado. 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 Reykjavik Keflavik Intl Airport to Colorado?

    Departing from Reykjavik Keflavik Intl Airport to Colorado will take you 12h 59m. There are 3556 mi between Reykjavik Keflavik Intl Airport and Colorado.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Keflavik Intl to Colorado by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

See more FAQs

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