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$240+ 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 10/4. Fares are subject to change and may not be available on all flights or dates of travel.
KEF — DEN
Jun 17 — Jun 241
Tue 6/17
Tue 6/24
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 June 12, 2025.

Round-trip from

$619
(Kiwi.com)

One-way from

$240
(Kiwi.com)

Good round-trip deal

$617 or less

Good one-way deal

$484 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 round-trip 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 June 12, 2025.

This Kiwi.com 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/109:35 amKEF - DEN
1 stop31h 52mWestJet
Tue 7/2212:15 pmDEN - KEF
1 stop14h 00mWestJet
Deal found 6/11$619
This Mytrip 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/269:35 amKEF - DEN
1 stop31h 52mMultiple Airlines
Sat 8/27:00 pmDEN - KEF
2 stops31h 15mMultiple Airlines
Deal found 6/11$635
This Ticket 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 Ticket is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/2510:35 amKEF - DEN
Nonstop7h 55mIcelandair
Fri 8/18:10 pmDEN - KEF
Nonstop7h 15mIcelandair
Deal found 6/10$640
This FlightHub 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/207:40 amKEF - DEN
2 stops22h 09mScandinavian Airlines
Wed 8/276:35 amDEN - KEF
2 stops27h 45mScandinavian Airlines
Deal found 6/12$818
This Ticket 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 Ticket is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/259:30 amKEF - DEN
2 stops17h 06mAir Canada
Fri 8/111:25 amDEN - KEF
2 stops14h 55mAir Canada
Deal found 6/10$1,069
This United Airlines 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/279:30 amKEF - DEN
1 stop30h 51mUnited Airlines
Sun 8/311:25 amDEN - KEF
2 stops13h 35mUnited Airlines
Deal found 6/12$1,094
This Travelocity 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 Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/191:15 amKEF - DEN
1 stop18h 30mLufthansa
Wed 8/278:25 pmDEN - KEF
1 stop21h 45mLufthansa
Deal found 6/12$1,107
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.
Thu 7/1011:25 amKEF - DEN
2 stops17h 41mDelta
Mon 7/2112:55 amDEN - KEF
1 stop23h 25mDelta
Deal found 6/11$1,304
This Virgin Atlantic 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 Virgin Atlantic is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/411:25 amKEF - DEN
2 stops17h 41mVirgin Atlantic
Mon 8/1110:41 amDEN - KEF
2 stops16h 49mVirgin Atlantic
Deal found 6/12$1,437
This SWISS 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 SWISS is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/259:05 amKEF - DEN
3 stops34h 55mSWISS
Fri 8/111:25 amDEN - KEF
2 stops54h 30mSWISS
Deal found 6/10$1,457
This FlightHub 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/2512:25 amKEF - DEN
2 stops23h 30mTurkish Airlines
Sun 7/277:50 pmDEN - KEF
2 stops38h 10mTurkish Airlines
Deal found 6/10$1,636

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 June 12, 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

Thu 7/10

9:35 am-11:27 am

1 stop31h 52m

Denver Intl

Tue 7/22

12:15 pm-8:15 am

1 stop14h 00m

$619

ReykjavikDenver

KEF - DEN

KEFDEN

Reykjavik Keflavik Intl

Sat 7/26

9:35 am-11:27 am

1 stop31h 52m

Denver Intl

Sat 8/2

7:00 pm-8:15 am

2 stops31h 15m

$635

ReykjavikDenver

KEF - DEN

KEFDEN

Reykjavik Keflavik Intl

Fri 7/25

10:35 am-12:30 pm

Nonstop7h 55m

Denver Intl

Fri 8/1

8:10 pm-9:25 am

Nonstop7h 15m

$640

ReykjavikDenver

KEF - DEN

KEFDEN

Reykjavik Keflavik Intl

Wed 8/20

7:40 am-11:49 pm

2 stops22h 09m

Denver Intl

Wed 8/27

6:35 am-4:20 pm

2 stops27h 45m

$818

ReykjavikDenver

KEF - DEN

KEFDEN

Reykjavik Keflavik Intl

Fri 7/25

9:30 am-8:36 pm

2 stops17h 06m

Denver Intl

Fri 8/1

11:25 am-8:20 am

2 stops14h 55m

$1,069

ReykjavikDenver

KEF - DEN

KEFDEN

Reykjavik Keflavik Intl

Sun 7/27

9:30 am-10:21 am

1 stop30h 51m

Denver Intl

Sun 8/3

11:25 am-7:00 am

2 stops13h 35m

$1,094

ReykjavikDenver

KEF - DEN

KEFDEN

Reykjavik Keflavik Intl

Tue 8/19

1:15 am-1:45 pm

1 stop18h 30m

Denver Intl

Wed 8/27

8:25 pm-12:10 am

1 stop21h 45m

$1,107

ReykjavikDenver

KEF - DEN

KEFDEN

Reykjavik Keflavik Intl

Thu 7/10

11:25 am-11:06 pm

2 stops17h 41m

Denver Intl

Mon 7/21

12:55 am-6:20 am

1 stop23h 25m

$1,304

ReykjavikDenver

KEF - DEN

KEFDEN

Reykjavik Keflavik Intl

Mon 8/4

11:25 am-11:06 pm

2 stops17h 41m

Denver Intl

Mon 8/11

10:41 am-9:30 am

2 stops16h 49m

$1,437

ReykjavikDenver

KEF - DEN

KEFDEN

Reykjavik Keflavik Intl

Fri 7/25

9:05 am-2:00 pm

3 stops34h 55m

Denver Intl

Fri 8/1

11:25 am-11:55 pm

2 stops54h 30m

$1,457

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/10

Showing 1-10 of 24 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 June 12, 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 June 12, 2025.

The most flights from KEF to USCO are scheduled on a Wednesday (3 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (1 on average).

Rainfall in Colorado by month

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

In terms of precipitation, rainfall in Colorado ranges from 0.5 - 2.3 inches per month. May is typically the wettest month, when rainfall can reach 2.3 in. January is typically the driest time to visit Colorado when rainfall is around 0.5 in.

Temperature in Colorado by month

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

If weather is an important factor for your trip to Colorado, 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 73.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 30.2 F).

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 June 12, 2025.
Delta
8.0
Very good
7,946 reviews

Crew

8.5

Overall

8.0

Boarding

8.2

Comfort

7.9

Food

7.3

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Delta
8.0
Very good
7,946 reviews
Delta
8.0
Very good
7,946 reviews

Crew

8.5

Overall

8.0

Boarding

8.2

Comfort

7.9

Food

7.3

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
KLM
7.8
Good
1,358 reviews
Delta
8.0
Very good
7,946 reviews

Crew

8.5

Overall

8.0

Boarding

8.2

Comfort

7.9

Food

7.3

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Austrian Airlines
7.6
Good
802 reviews
Delta
8.0
Very good
7,946 reviews

Crew

8.5

Overall

8.0

Boarding

8.2

Comfort

7.9

Food

7.3

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Finnair
7.6
Good
1,290 reviews
Delta
8.0
Very good
7,946 reviews

Crew

8.5

Overall

8.0

Boarding

8.2

Comfort

7.9

Food

7.3

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Air France
7.5
Good
1,463 reviews
Delta
8.0
Very good
7,946 reviews

Crew

8.5

Overall

8.0

Boarding

8.2

Comfort

7.9

Food

7.3

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

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.

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

    For one-way options, check prices for WestJet. According to our data, you can fly for as low as $240. Users have also found prices from $459 and $719 on Icelandair and American Airlines, respectively.

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

    Looking at all options, your cheapest flight can be booked for $452. While the most popular route (Reykjavik Keflavik Intl - Denver Intl) can be booked for $656 on average our data indicates $785 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.

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Alternative routes for Keflavik Intl to Colorado

See prices for flight routes from nearby airports that may be better suited for you.
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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 June 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest$543Average$629FlexibilityNo cancel feeOn-time76%

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