$383+ 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 2/24. Fares are subject to change and may not be available on all flights or dates of travel.
DEN — KEF
Mar 5 — Mar 121
1 adult, Economy
We work with more than 300 partners to bring you better travel deals
Find cheap flights from Colorado to Keflavik Intl with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from Colorado to Keflavik Intl
Cheapest
Best
Last-minute
One-way
Cheapest flights from Colorado to Keflavik IntlExplore 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 February 3, 2026.
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 February 3, 2026.
This deal was found by Cheapflights users on 2/3. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/203:40 pm
DEN
- KEF
Nonstop7h 25m
Icelandair
Wed 3/44:55 pm
KEF
- DEN
Nonstop8h 10m
Icelandair
Deal found 2/3![Icelandair logo]()
$536
This Mytrip deal was found by Cheapflights users on 2/1. 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.
Mon 2/233:40 pm
DEN
- KEF
Nonstop7h 25m
Icelandair
Fri 3/64:55 pm
KEF
- DEN
Nonstop8h 10m
Icelandair
Deal found 2/1![Icelandair logo]()
$540
This Mytrip deal was found by Cheapflights users on 2/2. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/33:40 pm
DEN
- KEF
Nonstop7h 25m
Icelandair
Wed 3/114:55 pm
KEF
- DEN
Nonstop8h 10m
Icelandair
Deal found 2/2![Icelandair logo]()
$542
This Cheapflightsfares deal was found by Cheapflights users on 2/3. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/233:40 pm
DEN
- KEF
Nonstop7h 25m
Icelandair
Mon 3/24:55 pm
KEF
- DEN
Nonstop8h 10m
Icelandair
Deal found 2/3![Icelandair logo]()
$543
This CrystalTravel deal was found by Cheapflights users on 2/3. 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 CrystalTravel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/24:40 pm
DEN
- KEF
Nonstop7h 20m
Icelandair
Sun 4/124:50 pm
KEF
- DEN
Nonstop8h 10m
Icelandair
Deal found 2/3![Icelandair logo]()
$553
This Kiwi.com deal was found by Cheapflights users on 2/3. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/203:40 pm
DEN
- KEF
Nonstop7h 25m
Icelandair
Thu 2/264:55 pm
KEF
- DEN
Nonstop8h 10m
Icelandair
Deal found 2/3![Icelandair logo]()
$556
This Kiwi.com deal was found by Cheapflights users on 2/3. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/243:40 pm
DEN
- KEF
Nonstop7h 25m
Icelandair
Mon 3/24:55 pm
KEF
- DEN
Nonstop8h 10m
Icelandair
Deal found 2/3![Icelandair logo]()
$557
This deal was found by Cheapflights users on 2/3. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/204:40 pm
DEN
- KEF
Nonstop7h 20m
Icelandair
Mon 4/274:50 pm
KEF
- DEN
Nonstop8h 10m
Icelandair
Deal found 2/3![Icelandair logo]()
$561
This CrystalTravel deal was found by Cheapflights users on 2/2. 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 CrystalTravel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/34:40 pm
DEN
- KEF
Nonstop7h 20m
Icelandair
Sat 6/1310:45 am
KEF
- DEN
Nonstop7h 55m
Icelandair
Deal found 2/2![Icelandair logo]()
$563
This Mytrip deal was found by Cheapflights users on 2/1. 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.
Mon 4/64:40 pm
DEN
- KEF
Nonstop7h 20m
Icelandair
Mon 4/134:50 pm
KEF
- DEN
Nonstop8h 10m
Icelandair
Deal found 2/1![Icelandair logo]()
$565
This CrystalTravel deal was found by Cheapflights users on 2/3. 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 CrystalTravel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/104:40 pm
DEN
- KEF
Nonstop7h 25m
Icelandair
Wed 3/184:55 pm
KEF
- DEN
Nonstop8h 10m
Icelandair
Deal found 2/3![Icelandair logo]()
$566
This Cheapflightsfares deal was found by Cheapflights users on 2/3. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 6/218:10 pm
DEN
- KEF
Nonstop7h 15m
Icelandair
Mon 6/2910:45 am
KEF
- DEN
Nonstop7h 55m
Icelandair
Deal found 2/3![Icelandair logo]()
$572
Best flights from Colorado to Keflavik IntlDiscover carefully curated flight deals from Colorado to Keflavik Intl that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated February 3, 2026.
Discover carefully curated flight deals from Colorado to Keflavik Intl that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated February 3, 2026.
This Icelandair deal was found by Cheapflights users on 2/1. 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.
Thu 4/94:40 pm
DEN
- KEF
Nonstop7h 20m
Icelandair
Mon 4/134:50 pm
KEF
- DEN
Nonstop8h 10m
Icelandair
Deal found 2/1![Icelandair logo]()
$583
This KLM deal was found by Cheapflights users on 2/2. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/2212:44 pm
DEN
- KEF
1 stop14h 46m
KLM
Wed 4/2911:25 am
KEF
- DEN
2 stops14h 54m
KLM
Deal found 2/2![KLM logo]()
$595
This Delta deal was found by Cheapflights users on 2/2. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/114:08 pm
DEN
- KEF
1 stop9h 32m
Delta
Mon 5/258:50 am
KEF
- DEN
1 stop14h 26m
Delta
Deal found 2/2![Delta logo]()
$635
This United Airlines deal was found by Cheapflights users on 1/31. 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.
Tue 5/121:35 pm
DEN
- KEF
2 stops12h 55m
United Airlines
Tue 5/1912:00 pm
KEF
- DEN
1 stop12h 06m
United Airlines
Deal found 1/31![United Airlines logo]()
$635
This Virgin Atlantic deal was found by Cheapflights users on 1/31. 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.
Tue 5/1211:55 am
COS
- KEF
2 stops15h 35m
Virgin Atlantic
Tue 5/199:30 am
KEF
- COS
2 stops18h 28m
Virgin Atlantic
Deal found 1/31![Virgin Atlantic logo]()
$656
This Icelandair deal was found by Cheapflights users on 2/1. 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 6/268:10 pm
DEN
- KEF
Nonstop7h 15m
Icelandair
Wed 7/810:45 am
KEF
- DEN
Nonstop7h 55m
Icelandair
Deal found 2/1![Icelandair logo]()
$624
This KLM deal was found by Cheapflights users on 2/2. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/812:35 pm
DEN
- KEF
1 stop14h 55m
KLM
Sun 5/1711:25 am
KEF
- DEN
1 stop13h 24m
KLM
Deal found 2/2![KLM logo]()
$635
This Delta deal was found by Cheapflights users on 2/2. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/101:20 pm
DEN
- KEF
1 stop12h 20m
Delta
Mon 5/258:50 am
KEF
- DEN
1 stop11h 09m
Delta
Deal found 2/2![Delta logo]()
$635
This United Airlines deal was found by Cheapflights users on 2/1. 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.
Tue 5/121:25 pm
COS
- KEF
2 stops37h 05m
United Airlines
Tue 5/1912:00 pm
KEF
- COS
2 stops26h 47m
United Airlines
Deal found 2/1![United Airlines logo]()
$666
This Icelandair deal was found by Cheapflights users on 2/2. 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.
Fri 5/84:40 pm
DEN
- KEF
Nonstop7h 20m
Icelandair
Fri 5/2210:45 am
KEF
- DEN
Nonstop7h 55m
Icelandair
Deal found 2/2![Icelandair logo]()
$626
This Gurufare deal was found by Cheapflights users on 1/31. 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 Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/283:21 pm
DRO
- KEF
2 stops26h 09m
Lufthansa
Sun 6/712:00 pm
KEF
- DRO
1 stop30h 32m
Lufthansa
Deal found 1/31![Lufthansa logo]()
$1,391
This KLM deal was found by Cheapflights users on 2/3. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/1012:35 pm
DEN
- KEF
1 stop14h 55m
KLM
Sun 5/178:50 am
KEF
- DEN
1 stop14h 26m
KLM
Deal found 2/3![KLM logo]()
$635
This Virgin Atlantic deal was found by Cheapflights users on 1/31. 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 5/116:00 am
COS
- KEF
2 stops21h 30m
Virgin Atlantic
Mon 5/1811:25 am
KEF
- COS
2 stops16h 33m
Virgin Atlantic
Deal found 1/31![Virgin Atlantic logo]()
$716
This KLM deal was found by Cheapflights users on 1/31. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/129:16 am
DEN
- KEF
1 stop16h 24m
KLM
Tue 5/1911:25 am
KEF
- DEN
1 stop13h 24m
KLM
Deal found 1/31![KLM logo]()
$635
This KLM deal was found by Cheapflights users on 1/31. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/1210:48 am
DEN
- KEF
1 stop14h 52m
KLM
Mon 5/189:30 am
KEF
- DEN
1 stop12h 01m
KLM
Deal found 1/31![KLM logo]()
$635
This United Airlines deal was found by Cheapflights users on 1/31. 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.
Mon 5/116:57 pm
COS
- KEF
2 stops31h 33m
United Airlines
Mon 5/1812:00 pm
KEF
- COS
1 stop15h 57m
United Airlines
Deal found 1/31![United Airlines logo]()
$903
This United Airlines deal was found by Cheapflights users on 1/31. 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.
Thu 5/285:20 am
DRO
- KEF
2 stops21h 10m
United Airlines
Sun 6/79:15 am
KEF
- DRO
2 stops33h 17m
United Airlines
Deal found 1/31![United Airlines logo]()
$1,044
This United Airlines deal was found by Cheapflights users on 2/1. 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.
Mon 6/225:20 am
DRO
- KEF
2 stops21h 10m
United Airlines
Sat 7/119:15 am
KEF
- DRO
2 stops33h 17m
United Airlines
Deal found 2/1![United Airlines logo]()
$1,143
This Scandinavian Airlines deal was found by Cheapflights users on 1/31. 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 Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/126:00 am
COS
- KEF
2 stops27h 20m
Multiple Airlines
Tue 5/195:05 pm
KEF
- COS
3 stops48h 10m
Multiple Airlines
Deal found 1/31![Multiple Airlines logo]()
$3,141
This United Airlines deal was found by Cheapflights users on 2/2. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/157:00 am
DRO
- KEF
2 stops19h 30m
United Airlines
Wed 6/2410:00 am
KEF
- DRO
2 stops32h 32m
United Airlines
Deal found 2/2![United Airlines logo]()
$1,148
This FlightHub deal was found by Cheapflights users on 1/31. 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 3/121:41 pm
DRO
- KEF
2 stops18h 39m
Lufthansa
Fri 3/203:25 pm
KEF
- DRO
2 stops35h 15m
Lufthansa
Deal found 1/31![Lufthansa logo]()
$2,967
Last-minute flights from Colorado to Keflavik IntlDiscover last-minute flight deals from Colorado to Keflavik Intl. Data last updated February 3, 2026 and is based on user searches.
Discover last-minute flight deals from Colorado to Keflavik Intl. Data last updated February 3, 2026 and is based on user searches.
This deal was found by Cheapflights users on 2/3. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/183:40 pm
DEN
- KEF
Nonstop7h 25m
Icelandair
Thu 3/54:55 pm
KEF
- DEN
Nonstop8h 10m
Icelandair
Deal found 2/3![Icelandair logo]()
$642
This deal was found by Cheapflights users on 2/3. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/203:40 pm
DEN
- KEF
Nonstop7h 25m
Icelandair
Wed 3/44:55 pm
KEF
- DEN
Nonstop8h 10m
Icelandair
Deal found 2/3![Icelandair logo]()
$536
This Kiwi.com deal was found by Cheapflights users on 2/3. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/203:40 pm
DEN
- KEF
Nonstop7h 25m
Icelandair
Thu 2/264:55 pm
KEF
- DEN
Nonstop8h 10m
Icelandair
Deal found 2/3![Icelandair logo]()
$556
This Kiwi.com deal was found by Cheapflights users on 2/3. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/203:40 pm
DEN
- KEF
Nonstop7h 25m
Icelandair
Sun 3/14:55 pm
KEF
- DEN
Nonstop8h 10m
Icelandair
Deal found 2/3![Icelandair logo]()
$629
This Mytrip deal was found by Cheapflights users on 2/1. 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.
Mon 2/233:40 pm
DEN
- KEF
Nonstop7h 25m
Icelandair
Fri 3/64:55 pm
KEF
- DEN
Nonstop8h 10m
Icelandair
Deal found 2/1![Icelandair logo]()
$540
This Cheapflightsfares deal was found by Cheapflights users on 2/3. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/233:40 pm
DEN
- KEF
Nonstop7h 25m
Icelandair
Mon 3/24:55 pm
KEF
- DEN
Nonstop8h 10m
Icelandair
Deal found 2/3![Icelandair logo]()
$543
This Kiwi.com deal was found by Cheapflights users on 2/3. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/233:40 pm
DEN
- KEF
Nonstop7h 25m
Icelandair
Sun 3/14:55 pm
KEF
- DEN
Nonstop8h 10m
Icelandair
Deal found 2/3![Icelandair logo]()
$630
This Kiwi.com deal was found by Cheapflights users on 2/3. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/243:40 pm
DEN
- KEF
Nonstop7h 25m
Icelandair
Mon 3/24:55 pm
KEF
- DEN
Nonstop8h 10m
Icelandair
Deal found 2/3![Icelandair logo]()
$557
This Mytrip deal was found by Cheapflights users on 2/2. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/33:40 pm
DEN
- KEF
Nonstop7h 25m
Icelandair
Wed 3/114:55 pm
KEF
- DEN
Nonstop8h 10m
Icelandair
Deal found 2/2![Icelandair logo]()
$542
This CrystalTravel deal was found by Cheapflights users on 2/3. 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 CrystalTravel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/104:40 pm
DEN
- KEF
Nonstop7h 25m
Icelandair
Wed 3/184:55 pm
KEF
- DEN
Nonstop8h 10m
Icelandair
Deal found 2/3![Icelandair logo]()
$566
This Kiwi.com deal was found by Cheapflights users on 2/2. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/244:40 pm
DEN
- KEF
Nonstop7h 25m
Icelandair
Wed 4/14:50 pm
KEF
- DEN
Nonstop8h 10m
Icelandair
Deal found 2/2![Icelandair logo]()
$575
This Mytrip deal was found by Cheapflights users on 2/2. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/244:40 pm
DEN
- KEF
Nonstop7h 25m
Icelandair
Fri 4/34:50 pm
KEF
- DEN
Nonstop8h 10m
Icelandair
Deal found 2/2![Icelandair logo]()
$597
One-way flights from Colorado to Keflavik IntlSearch for one-way flight options from Colorado to Keflavik Intl. Find affordable one-way fares based on user searches. Data last updated February 3, 2026.
Search for one-way flight options from Colorado to Keflavik Intl. Find affordable one-way fares based on user searches. Data last updated February 3, 2026.
This Kiwi.com deal was found by Cheapflights users on 2/2. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/2412:59 am
DEN
- KEF
3 stops33h 16m
Multiple Airlines
Deal found 2/2![Multiple Airlines logo]()
$383
This oojo deal was found by Cheapflights users on 2/3. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 6/78:10 pm
DEN
- KEF
Nonstop7h 15m
Icelandair
Deal found 2/3![Icelandair logo]()
$384
This oojo deal was found by Cheapflights users on 2/2. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/18:10 pm
DEN
- KEF
Nonstop7h 15m
Icelandair
Deal found 2/2![Icelandair logo]()
$394
This Kiwi.com deal was found by Cheapflights users on 2/2. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/77:54 pm
DEN
- KEF
3 stops46h 16m
Multiple Airlines
Deal found 2/2![Multiple Airlines logo]()
$403
This Kiwi.com deal was found by Cheapflights users on 2/2. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/196:15 am
DEN
- KEF
3 stops44h 00m
Multiple Airlines
Deal found 2/2![Multiple Airlines logo]()
$410
This KLM deal was found by Cheapflights users on 2/3. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/89:16 am
DEN
- KEF
1 stop16h 24m
KLM
Deal found 2/3![KLM logo]()
$427
This Kiwi.com deal was found by Cheapflights users on 2/2. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/171:09 pm
DEN
- KEF
3 stops46h 06m
Multiple Airlines
Deal found 2/2![Multiple Airlines logo]()
$443
This Expedia deal was found by Cheapflights users on 2/1. 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.
Tue 6/96:00 am
DEN
- KEF
1 stop21h 00m
Alaska Airlines
Deal found 2/1![Alaska Airlines logo]()
$447
This United Airlines deal was found by Cheapflights users on 2/3. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/59:40 am
DEN
- KEF
1 stop16h 15m
United Airlines
Deal found 2/3![United Airlines logo]()
$456
This oojo deal was found by Cheapflights users on 2/2. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/1710:39 pm
DEN
- KEF
1 stop17h 06m
Icelandair
Deal found 2/2![Icelandair logo]()
$486
This Expedia deal was found by Cheapflights users on 2/3. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/106:00 am
DEN
- KEF
1 stop21h 00m
Alaska Airlines
Deal found 2/3![Alaska Airlines logo]()
$506
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 February 3, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $536 |
One-way from | $383 (Kiwi.com) |
Popular in | January |
Cheapest in | February |
Average price | $564 |
Good round-trip deal | $475 or less |
Good one-way deal | $301 or less |
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 February 3, 2026.
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
Thu 4/9
4:40 pm-6:00 am
Nonstop7h 20m
Reykjavik Keflavik Intl
Mon 4/13
4:50 pm-7:00 pm
Nonstop8h 10m
$583
DenverReykjavik
DEN - KEF
DENKEF
Denver Intl
Wed 4/22
12:44 pm-9:30 am
1 stop14h 46m
Reykjavik Keflavik Intl
Wed 4/29
11:25 am-8:19 pm
2 stops14h 54m
$595
DenverReykjavik
DEN - KEF
DENKEF
Denver Intl
Fri 6/26
8:10 pm-9:25 am
Nonstop7h 15m
Reykjavik Keflavik Intl
Wed 7/8
10:45 am-12:40 pm
Nonstop7h 55m
$624
DenverReykjavik
DEN - KEF
DENKEF
Denver Intl
Fri 5/8
4:40 pm-6:00 am
Nonstop7h 20m
Reykjavik Keflavik Intl
Fri 5/22
10:45 am-12:40 pm
Nonstop7h 55m
$626
DenverReykjavik
DEN - KEF
DENKEF
Denver Intl
Mon 5/11
4:08 pm-7:40 am
1 stop9h 32m
Reykjavik Keflavik Intl
Mon 5/25
8:50 am-5:16 pm
1 stop14h 26m
$635
DenverReykjavik
DEN - KEF
DENKEF
Denver Intl
Tue 5/12
1:35 pm-8:30 am
2 stops12h 55m
Reykjavik Keflavik Intl
Tue 5/19
12:00 pm-6:06 pm
1 stop12h 06m
$635
DenverReykjavik
DEN - KEF
DENKEF
Denver Intl
Fri 5/8
12:35 pm-9:30 am
1 stop14h 55m
Reykjavik Keflavik Intl
Sun 5/17
11:25 am-6:49 pm
1 stop13h 24m
$635
DenverReykjavik
DEN - KEF
DENKEF
Denver Intl
Sun 5/10
1:20 pm-7:40 am
1 stop12h 20m
Reykjavik Keflavik Intl
Mon 5/25
8:50 am-1:59 pm
1 stop11h 09m
$635
DenverReykjavik
DEN - KEF
DENKEF
Denver Intl
Sun 5/10
12:35 pm-9:30 am
1 stop14h 55m
Reykjavik Keflavik Intl
Sun 5/17
8:50 am-5:16 pm
1 stop14h 26m
$635
DenverReykjavik
DEN - KEF
DENKEF
Denver Intl
Tue 5/12
9:16 am-7:40 am
1 stop16h 24m
Reykjavik Keflavik Intl
Tue 5/19
11:25 am-6:49 pm
1 stop13h 24m
$635
Showing 1-10 of 31 results
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.
DEN-KEF
COS-KEF
DRO-KEF
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
USCO-KEF
DEN-KEF
COS-KEF
DRO-KEF
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 March is currently the most expensive (average of $563). 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 February 3, 2026.
When flying from Colorado to Reykjavik Keflavik Intl Airport, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.
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.
Traveling to a place near Reykjavik Keflavik Intl Airport?
Book flights to Reykjavik Keflavik Intl Airport if you plan to visit one of these locationsKeflavik
Hveragerdi
Browse thousands of different options on Cheapflights for your next trip
Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.
Alternative routes
Complete your trip
Flights by cabin class
Keflavik Intl flight routes
Other flight options
Popular flights
Top destinations
Alternative routes for Colorado to Keflavik Intl
See prices for flight routes from nearby airports that may be better suited for you.
Complete your trip
Complete your trip to Keflavik Intl by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Colorado to Keflavik Intl by cabin class
Find flights from Colorado to Keflavik Intl, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Other flights to Keflavik Intl
Explore flights to Keflavik Intl departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on February 3, 2026.
Colorado and Keflavik Intl flights
Browse other Colorado and Keflavik Intl flight options. Last updated on February 3, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Colorado to Keflavik Intl flights
Consider these flights traveling from Colorado to Keflavik Intl.
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 February 3, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$418 | Average$616 | FlexibilityNo cancel fee | On-time76% |