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$291+ 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 10/11. Fares are subject to change and may not be available on all flights or dates of travel.
KEF — DEN
Oct 17 — Oct 241
Fri 10/17
Fri 10/24
1 adult, Economy
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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 September 17, 2025.

Round-trip from

$505
(Kiwi.com)

One-way from

$291
(oojo)

Good one-way deal

$477 or less
From Reykjavik Keflavik Intl to Colorado
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One-way flight from Reykjavik Keflavik Intl to Colorado
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Price to beat on a one-way flight from Reykjavik Keflavik Intl to Colorado.
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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 September 17, 2025.

This Kiwi.com deal was found by Cheapflights users on 9/16. 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.
Thu 10/163:05 pmKEF - DEN
1 stop35h 17mMultiple Airlines
Wed 10/2212:59 amDEN - KEF
2 stops21h 56mMultiple Airlines
Deal found 9/16$505
This Kiwi.com deal was found by Cheapflights users on 9/16. 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.
Sat 10/113:05 pmKEF - DEN
2 stops23h 10mMultiple Airlines
Sun 10/1212:15 pmDEN - KEF
1 stop14h 00mMultiple Airlines
Deal found 9/16$552
This Gotogate deal was found by Cheapflights users on 9/16. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/74:55 pmKEF - DEN
Nonstop8h 10mIcelandair
Fri 11/143:40 pmDEN - KEF
Nonstop7h 25mIcelandair
Deal found 9/16$610
This lastminute.com deal was found by Cheapflights users on 9/15. 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 lastminute.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/64:55 pmKEF - DEN
Nonstop8h 10mIcelandair
Fri 11/143:40 pmDEN - KEF
Nonstop7h 25mIcelandair
Deal found 9/15$615
This Booking.com deal was found by Cheapflights users on 9/17. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/144:55 pmKEF - DEN
Nonstop8h 10mIcelandair
Sat 12/203:40 pmDEN - KEF
Nonstop7h 25mIcelandair
Deal found 9/17$617
This Gotogate deal was found by Cheapflights users on 9/16. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/124:55 pmKEF - DEN
Nonstop8h 10mIcelandair
Wed 12/173:40 pmDEN - KEF
Nonstop7h 25mIcelandair
Deal found 9/16$619
This Mytrip deal was found by Cheapflights users on 9/14. 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.
Thu 10/304:55 pmKEF - DEN
Nonstop8h 10mIcelandair
Thu 11/63:40 pmDEN - KEF
Nonstop7h 25mIcelandair
Deal found 9/14$641
This ResecentrumGruppen deal was found by Cheapflights users on 9/16. 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 ResecentrumGruppen is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/314:55 pmKEF - DEN
Nonstop8h 10mIcelandair
Fri 11/73:40 pmDEN - KEF
Nonstop7h 25mIcelandair
Deal found 9/16$646

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 September 17, 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

Sat 10/11

3:05 pm-8:15 am

2 stops23h 10m

Denver Intl

Sun 10/12

12:15 pm-8:15 am

1 stop14h 00m

$552

ReykjavikDenver

KEF - DEN

KEFDEN

Reykjavik Keflavik Intl

Fri 11/7

4:55 pm-6:05 pm

Nonstop8h 10m

Denver Intl

Fri 11/14

3:40 pm-6:05 am

Nonstop7h 25m

$610

ReykjavikDenver

KEF - DEN

KEFDEN

Reykjavik Keflavik Intl

Thu 11/6

4:55 pm-6:05 pm

Nonstop8h 10m

Denver Intl

Fri 11/14

3:40 pm-6:05 am

Nonstop7h 25m

$615

ReykjavikDenver

KEF - DEN

KEFDEN

Reykjavik Keflavik Intl

Fri 10/31

4:55 pm-7:05 pm

Nonstop8h 10m

Denver Intl

Fri 11/7

3:40 pm-6:05 am

Nonstop7h 25m

$656

ReykjavikDenver

KEF - DEN

KEFDEN

Reykjavik Keflavik Intl

Fri 12/12

5:00 pm-11:59 pm

1 stop13h 59m

Denver Intl

Wed 12/17

3:40 pm-6:05 am

Nonstop7h 25m

$750

ReykjavikDenver

KEF - DEN

KEFDEN

Reykjavik Keflavik Intl

Thu 10/30

4:55 pm-7:05 pm

Nonstop8h 10m

Denver Intl

Thu 11/6

8:02 pm-6:15 am

1 stop27h 13m

$778

ReykjavikDenver

KEF - DEN

KEFDEN

Reykjavik Keflavik Intl

Fri 10/31

4:55 pm-7:05 pm

Nonstop8h 10m

Denver Intl

Fri 11/7

6:05 pm-6:35 am

1 stop29h 30m

$791

ReykjavikDenver

KEF - DEN

KEFDEN

Reykjavik Keflavik Intl

Sat 10/11

4:50 pm-6:55 pm

Nonstop8h 05m

Denver Intl

Sun 10/12

8:10 pm-9:25 am

Nonstop7h 15m

$808

ReykjavikDenver

KEF - DEN

KEFDEN

Reykjavik Keflavik Intl

Thu 10/2

9:35 am-12:17 pm

2 stops32h 42m

$347

ReykjavikDenver

KEF - DEN

KEFDEN

Reykjavik Keflavik Intl

Fri 9/26

3:05 pm-9:22 pm

2 stops36h 17m

$349

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/14

Showing 1-10 of 16 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 September 17, 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 September 17, 2025.

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

Reviews of airlines servicing Colorado

Get insights into the airlines that provide service to Colorado. 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 Colorado. Reviews last updated September 17, 2025.
See what other customers who have flown with Icelandair from Reykjavik Keflavik Intl Airport to Colorado have to say. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Icelandair
7.0
Good
545 reviews

Crew

8.0

Food

6.2

Boarding

7.2

Comfort

6.9

Entertainment

7.0

Overall

7.0

Reviews

1 / 20
6.0
Good

Anonymous,Aug 2025

GVA - KEF

Terrible customer service when dealing with phone representatives. Baggage was lost.
Icelandair
7.0
Good
545 reviews
Icelandair
7.0
Good
545 reviews

Crew

8.0

Food

6.2

Boarding

7.2

Comfort

6.9

Entertainment

7.0

Overall

7.0

Reviews

1 / 20
6.0
Good

Anonymous,Aug 2025

GVA - KEF

Terrible customer service when dealing with phone representatives. Baggage was lost.

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 8h 10m. There are 3556 mi between Reykjavik Keflavik Intl Airport and Colorado. All flights are typically nonstop.

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

    Looking at all options, your cheapest flight can be booked for $466. While the most popular route (Reykjavik Keflavik Intl - Denver Intl) can be booked for $523 on average, our data indicates $559 when flying from Reykjavik Keflavik Intl Airport to 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.

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

    Currently, October is the cheapest month in which you can book a flight from Reykjavik Keflavik Intl Airport to Colorado (average of $197). Flying from Reykjavik Keflavik Intl Airport to Colorado in March is currently the most expensive (average of $278). 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

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Top airline flying from Keflavik Intl to Colorado

Discover the top airline that operate flights from Keflavik Intl to Colorado. 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 September 17, 2025.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest$543Average$623FlexibilityNo cancel feeOn-time76%

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