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Iceland

$373+ Cheap flights from Colorado to Iceland

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 1/5. Fares are subject to change and may not be available on all flights or dates of travel.
DEN — KEF
Dec 18 — Dec 251
Thu 12/18
Thu 12/25
1 adult, Economy
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Find flight deals from Colorado to Iceland

Cheapest flights from Colorado to Iceland
Explore the most affordable flight options available from Colorado to Iceland. Find the lowest fares from popular airlines and budget airlines, with prices last updated on November 18, 2025.

This CrystalTravel deal was found by Cheapflights users on 11/17. 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 CrystalTravel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/233:40 pmDEN - KEF
Nonstop7h 25mIcelandair
Sat 12/274:55 pmKEF - DEN
Nonstop8h 10mIcelandair
Deal found 11/17$581
This CrystalTravel deal was found by Cheapflights users on 11/17. 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 CrystalTravel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/23:40 pmDEN - KEF
Nonstop7h 25mIcelandair
Thu 12/114:55 pmKEF - DEN
Nonstop8h 10mIcelandair
Deal found 11/17$617
This Cheapflightsfares deal was found by Cheapflights users on 11/17. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/63:40 pmDEN - KEF
Nonstop7h 25mIcelandair
Thu 12/114:55 pmKEF - DEN
Nonstop8h 10mIcelandair
Deal found 11/17$639
This Expedia deal was found by Cheapflights users on 11/17. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/53:40 pmDEN - KEF
Nonstop7h 25mIcelandair
Wed 12/104:55 pmKEF - DEN
Nonstop8h 10mIcelandair
Deal found 11/17$648
This Cheapflightsfares deal was found by Cheapflights users on 11/16. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/43:40 pmDEN - KEF
Nonstop7h 25mIcelandair
Mon 12/84:55 pmKEF - DEN
Nonstop8h 10mIcelandair
Deal found 11/16$654
This Cheapflightsfares deal was found by Cheapflights users on 11/17. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/43:40 pmDEN - KEF
Nonstop7h 25mIcelandair
Wed 12/104:55 pmKEF - DEN
Nonstop8h 10mIcelandair
Deal found 11/17$663
This Kiwi.com deal was found by Cheapflights users on 11/16. 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 11/298:30 pmDEN - KEF
1 stop27h 05mMultiple Airlines
Fri 12/54:45 pmKEF - DEN
1 stop10h 40mMultiple Airlines
Deal found 11/16$722
This CrystalTravel deal was found by Cheapflights users on 11/16. 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 CrystalTravel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/173:40 pmDEN - KEF
Nonstop7h 25mIcelandair
Mon 11/244:55 pmKEF - DEN
Nonstop8h 10mIcelandair
Deal found 11/16$767
This Cheapflightsfares deal was found by Cheapflights users on 11/15. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/83:40 pmDEN - KEF
Nonstop7h 25mIcelandair
Mon 12/155:00 pmKEF - DEN
1 stop12h 59mIcelandair
Deal found 11/15$772
This Lufthansa deal was found by Cheapflights users on 11/16. 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 Lufthansa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/51:39 pmDRO - KEF
2 stops17h 36mLufthansa
Tue 12/93:20 pmKEF - DRO
2 stops36h 14mLufthansa
Deal found 11/16$946
This Ovago deal was found by Cheapflights users on 11/18. 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.
Wed 11/191:38 pmDRO - KEF
2 stops17h 37mLufthansa
Sun 11/233:20 pmKEF - DRO
2 stops36h 14mLufthansa
Deal found 11/18$1,279
This American Airlines deal was found by Cheapflights users on 11/18. 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.
Mon 12/84:29 pmDRO - KEF
2 stops35h 21mAmerican Airlines
Mon 12/1511:50 amKEF - DRO
2 stops28h 55mAmerican Airlines
Deal found 11/18$1,626

Cheap flight deals from Colorado to Iceland

Keep the following information in mind while searching for Colorado to Iceland flight deals. Data was last updated November 18, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$414
(CrystalTravel)

One-way from

$373
(Kiwi.com)

Popular in

January

Cheapest in

February

Average price

$601

Good round-trip deal

$476 or less

Good one-way deal

$414 or less
Provider with most accurate pricing for Denver Intl-Reykjavik (REK) flight deals.
Search Deals
Provider most trusted by Cheapflights users for Denver Intl-Reykjavik (REK) flights.
Search Deals
From Colorado to Iceland
Search Deals
One-way flight from Colorado to Iceland
Search Deals
Highest demand for flights based on searches. 2% potential increase in price ($16 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 0% potential price decrease ($6 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in November 2025
Search Deals
Price to beat on a round-trip flight from Colorado to Iceland.
Search Deals
Price to beat on a one-way flight from Colorado to Iceland.
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Colorado to Iceland 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 18, 2025.
Use the filters below to find and compare flights from Colorado to Iceland that are best for you.

Fly from

Colorado

Fly to

Iceland

Route

Depart

Return

Price

DenverReykjavik

DEN - KEF

DENKEF

Denver Intl

Fri 4/17

12:20 pm-9:30 am

1 stop15h 10m

Reykjavik Keflavik Intl

Sun 4/26

11:25 am-6:34 pm

1 stop13h 09m

$588

DenverReykjavik

DEN - KEF

DENKEF

Denver Intl

Sat 4/11

12:20 pm-9:30 am

1 stop15h 10m

Reykjavik Keflavik Intl

Sun 4/19

11:25 am-10:49 pm

1 stop17h 24m

$588

DenverReykjavik

DEN - KEF

DENKEF

Denver Intl

Thu 4/30

12:20 pm-9:30 am

1 stop15h 10m

Reykjavik Keflavik Intl

Sun 5/3

11:25 am-6:34 pm

1 stop13h 09m

$600

DenverReykjavik

DEN - KEF

DENKEF

Denver Intl

Sun 4/26

12:20 pm-9:30 am

1 stop15h 10m

Reykjavik Keflavik Intl

Thu 5/7

11:25 am-11:51 pm

2 stops18h 26m

$605

DenverReykjavik

DEN - KEF

DENKEF

Denver Intl

Mon 4/27

6:05 am-9:30 am

2 stops21h 25m

Reykjavik Keflavik Intl

Fri 5/8

9:30 am-3:31 pm

1 stop12h 01m

$605

DenverReykjavik

DEN - KEF

DENKEF

Denver Intl

Tue 5/12

4:40 pm-6:00 am

Nonstop7h 20m

Reykjavik Keflavik Intl

Sat 5/16

4:50 pm-6:55 pm

Nonstop8h 05m

$615

DenverReykjavik

DEN - KEF

DENKEF

Denver Intl

Mon 5/11

4:40 pm-6:00 am

Nonstop7h 20m

Reykjavik Keflavik Intl

Mon 5/18

4:50 pm-6:55 pm

Nonstop8h 05m

$615

DenverReykjavik

DEN - KEF

DENKEF

Denver Intl

Sat 5/9

4:40 pm-6:00 am

Nonstop7h 20m

Reykjavik Keflavik Intl

Sat 5/16

4:50 pm-6:55 pm

Nonstop8h 05m

$615

DenverReykjavik

DEN - KEF

DENKEF

Denver Intl

Fri 5/1

6:05 am-9:30 am

2 stops21h 25m

Reykjavik Keflavik Intl

Sun 5/10

11:25 am-10:18 pm

2 stops16h 53m

$635

DenverReykjavik

DEN - KEF

DENKEF

Denver Intl

Sun 5/10

4:00 pm-7:00 am

1 stop9h 00m

Reykjavik Keflavik Intl

Sun 5/17

9:30 am-10:29 pm

1 stop18h 59m

$660

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/15

Showing 1-10 of 28 results
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Best time to book a flight from Colorado to Iceland

Have a flexible travel schedule? Discover the best time to fly to Iceland 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 Iceland

What is the cheapest month to book a flight from Colorado to Iceland?

Currently, November is the cheapest month in which you can book a flight from Colorado to Iceland (average of $381). Flying from Colorado to Iceland 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 IS?

Find hourly flight availability from Colorado to Iceland. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated November 18, 2025.

One of the essential ways to save on airfare from Colorado to Iceland is to remain as flexible as possible. Flights that are at noon tend to be the most expensive. A flight in the morning could potentially save you up to 17% on airfare.

What is the cheapest day to fly from Colorado to Iceland?

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

Travelers seeking maximum savings on their Colorado to Iceland flight should consider departing on Friday 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 Colorado to Iceland

Explore weekly flight availability from Colorado to Iceland. 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 18, 2025.

The most flights from USCO to IS0 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).

Related info for your journey

Find useful and relevant information for your journey from Colorado to Iceland. 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 Iceland?

    KLM, Delta, and Lufthansa can get you from Colorado to Iceland in just under 15h 10m. Your travel time can differ by up to 24h 25m. The distance between Colorado and Iceland is about 3556 mi. This flight may include one or multiple stops.

  • What are the cheapest airlines to fly from Colorado to Iceland one-way?

    To fly one-way, consider booking your trip with Icelandair, which is currently one of the cheapest options available, starting at $400. Lufthansa flights start at $481 while deals on Scandinavian Airlines start at $513 one-way.

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

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

  • How can I find direct flights from Colorado to Iceland?

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

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

    Yes. Cheapflights offers flight deals from Colorado to Iceland 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 Iceland?

    Currently, November is the cheapest month in which you can book a flight from Colorado to Iceland (average of $381). Flying from Colorado to Iceland 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

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Alternative routes for Colorado to Iceland

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Top airline flying from Colorado to Iceland

Discover the top airline that operate flights from Colorado to Iceland. 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 November 18, 2025.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest$442Average$673FlexibilityNo cancel feeOn-time76%

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