$364+ Cheap flights from Denver (DEN) to Keflavik Intl (KEF)
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 1/11. Fares are subject to change and may not be available on all flights or dates of travel.
DEN — KEF
Dec 7 — Dec 141
Round-trip
1 adult, Economy
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Find cheap flights from Denver 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
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Cheapest flights from Denver to Keflavik IntlExplore the most affordable flight options available from Denver to Keflavik Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on November 7, 2026.
Explore the most affordable flight options available from Denver to Keflavik Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on November 7, 2026.
This United Airlines deal was found by Cheapflights users on 11/4. 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.
Wed 12/23:12 pm -
1 stop11h 48m
Mon 12/1412:00 pm -
1 stop13h 03m
Deal found 11/4![United Airlines logo]()
$534
This United Airlines deal was found by Cheapflights users on 11/5. 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.
Wed 12/93:50 pm -
1 stop11h 10m
Mon 12/1412:00 pm -
1 stop14h 45m
Deal found 11/5![United Airlines logo]()
$542
This United Airlines deal was found by Cheapflights users on 11/4. 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 11/1211:59 pm -
2 stops27h 01m
Thu 11/1912:00 pm -
1 stop11h 23m
Deal found 11/4![United Airlines logo]()
$547
This United Airlines 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/108:25 pm -
1 stop30h 35m
Mon 11/1612:00 pm -
1 stop11h 23m
Deal found 11/3![United Airlines logo]()
$548
This United Airlines deal was found by Cheapflights users on 11/5. 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 12/108:25 pm -
1 stop30h 35m
Mon 12/1412:00 pm -
2 stops30h 27m
Deal found 11/5![United Airlines logo]()
$553
This United Airlines 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/75:55 pm -
2 stops57h 05m
Mon 12/1412:00 pm -
1 stop13h 03m
Deal found 11/3![United Airlines logo]()
$559
This Cheapflightsfares 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/43:40 pm -
Nonstop7h 25m
Wed 12/94:55 pm -
Nonstop8h 05m
Deal found 11/3![Icelandair logo]()
$562
This 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/303:40 pm -
Nonstop7h 25m
Sun 1/104:55 pm -
Nonstop8h 05m
Deal found 11/3![Icelandair logo]()
$566
This Expedia deal was found by Cheapflights users on 11/4. 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 12/43:40 pm -
Nonstop7h 25m
Sun 12/134:55 pm -
Nonstop8h 05m
Deal found 11/4![Icelandair logo]()
$570
This Globehunters deal was found by Cheapflights users on 11/7. 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 Globehunters is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/43:40 pm -
Nonstop7h 25m
Fri 12/114:55 pm -
Nonstop8h 05m
Deal found 11/7![Icelandair logo]()
$571
This United deal was found by Cheapflights users on 11/5. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/38:25 pm -
1 stop30h 35m
Thu 12/103:10 pm -
1 stop30h 20m
Deal found 11/5![Multiple Airlines logo]()
$578
Best flights from Denver to Keflavik IntlDiscover carefully curated flight deals from Denver to Keflavik Intl that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated November 7, 2026.
Discover carefully curated flight deals from Denver to Keflavik Intl that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated November 7, 2026.
This United Airlines 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/75:55 pm -
2 stops57h 05m
Mon 12/1412:00 pm -
1 stop13h 03m
Deal found 11/3![United Airlines logo]()
$559
This Icelandair deal was found by Cheapflights users on 11/5. 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.
Sun 1/33:40 pm -
Nonstop7h 25m
Sat 1/164:55 pm -
Nonstop8h 05m
Deal found 11/5![Icelandair logo]()
$736
This Scandinavian Airlines deal was found by Cheapflights users on 11/6. 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.
Wed 2/312:00 pm -
2 stops39h 50m
Mon 2/86:05 pm -
2 stops34h 29m
Deal found 11/6![Scandinavian Airlines logo]()
$767
This Icelandair deal was found by Cheapflights users on 11/5. 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.
Wed 2/311:10 am -
2 stops12h 20m
Mon 2/84:50 pm -
1 stop26h 10m
Deal found 11/5![Multiple Airlines logo]()
$845
This Finnair deal was found by Cheapflights users on 11/5. 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 Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/1310:38 am -
2 stops39h 37m
Sat 2/2710:00 am -
2 stops36h 10m
Deal found 11/5![Finnair logo]()
$872
This United Airlines 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/145:44 pm -
2 stops57h 16m
Mon 12/2112:00 pm -
2 stops27h 14m
Deal found 11/3![United Airlines logo]()
$808
This Scandinavian Airlines 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 Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/46:05 am -
2 stops28h 15m
Sun 3/76:05 pm -
2 stops35h 55m
Deal found 11/2![Scandinavian Airlines logo]()
$815
This Icelandair deal was found by Cheapflights users on 11/4. 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.
Sun 12/63:40 pm -
Nonstop7h 25m
Mon 12/144:55 pm -
Nonstop8h 05m
Deal found 11/4![Icelandair logo]()
$877
This Icelandair deal was found by Cheapflights users on 11/7. 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 12/410:55 am -
2 stops12h 15m
Fri 12/115:00 pm -
1 stop12h 27m
Deal found 11/7![Multiple Airlines logo]()
$943
This Finnair 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 Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/3010:41 am -
2 stops23h 34m
Wed 1/1310:00 am -
2 stops36h 10m
Deal found 11/3![Finnair logo]()
$975
This Icelandair deal was found by Cheapflights users on 11/5. 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 1/77:03 am -
1 stop16h 12m
Tue 1/124:55 pm -
Nonstop8h 05m
Deal found 11/5![Icelandair logo]()
$936
Last-minute flights from Denver to Keflavik IntlDiscover last-minute flight deals from Denver to Keflavik Intl. Data last updated November 7, 2026 and is based on user searches.
Discover last-minute flight deals from Denver to Keflavik Intl. Data last updated November 7, 2026 and is based on user searches.
This United Airlines 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/108:25 pm -
1 stop30h 35m
Mon 11/1612:00 pm -
1 stop11h 23m
Deal found 11/3![United Airlines logo]()
$548
This United Airlines deal was found by Cheapflights users on 11/4. 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 11/1211:59 pm -
2 stops27h 01m
Thu 11/1912:00 pm -
1 stop11h 23m
Deal found 11/4![United Airlines logo]()
$547
This United Airlines deal was found by Cheapflights users on 11/4. 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.
Wed 12/21:25 pm -
2 stops13h 35m
Sat 12/1212:00 pm -
2 stops18h 29m
Deal found 11/4![United Airlines logo]()
$534
This United deal was found by Cheapflights users on 11/5. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/38:25 pm -
1 stop30h 35m
Thu 12/103:10 pm -
1 stop30h 20m
Deal found 11/5![Multiple Airlines logo]()
$578
This Cheapflightsfares 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/43:40 pm -
Nonstop7h 25m
Wed 12/94:55 pm -
Nonstop8h 05m
Deal found 11/3![Icelandair logo]()
$562
This Expedia deal was found by Cheapflights users on 11/4. 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 12/43:40 pm -
Nonstop7h 25m
Sun 12/134:55 pm -
Nonstop8h 05m
Deal found 11/4![Icelandair logo]()
$570
This Globehunters deal was found by Cheapflights users on 11/7. 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 Globehunters is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/43:40 pm -
Nonstop7h 25m
Fri 12/114:55 pm -
Nonstop8h 05m
Deal found 11/7![Icelandair logo]()
$571
This United Airlines 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/75:55 pm -
2 stops57h 05m
Mon 12/1412:00 pm -
1 stop13h 03m
Deal found 11/3![United Airlines logo]()
$559
This United Airlines deal was found by Cheapflights users on 11/5. 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.
Wed 12/93:50 pm -
1 stop11h 10m
Mon 12/1412:00 pm -
1 stop14h 45m
Deal found 11/5![United Airlines logo]()
$542
This United Airlines deal was found by Cheapflights users on 11/5. 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 12/108:25 pm -
1 stop30h 35m
Mon 12/1412:00 pm -
2 stops30h 27m
Deal found 11/5![United Airlines logo]()
$553
This 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/303:40 pm -
Nonstop7h 25m
Sun 1/104:55 pm -
Nonstop8h 05m
Deal found 11/3![Icelandair logo]()
$566
One-way flights from Denver to Keflavik IntlSearch for one-way flight options from Denver to Keflavik Intl. Find affordable one-way fares based on user searches. Data last updated November 7, 2026.
Search for one-way flight options from Denver to Keflavik Intl. Find affordable one-way fares based on user searches. Data last updated November 7, 2026.
This Kiwi.com deal was found by Cheapflights users on 11/5. 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 1/118:47 am -
3 stops42h 58m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/5![Multiple Airlines logo]()
$364
This Expedia deal was found by Cheapflights users on 11/5. 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 2/91:11 pm -
2 stops37h 04m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/5![Finnair logo]()
$365
This Finnair deal was found by Cheapflights users on 11/5. 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 Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/910:58 am -
2 stops23h 17m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/5![Multiple Airlines logo]()
$376
This American Airlines deal was found by Cheapflights users on 11/6. 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.
Thu 2/185:05 pm -
1 stop17h 00m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/6![American Airlines logo]()
$404
This Kiwi.com deal was found by Cheapflights users on 11/5. 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.
Wed 1/139:46 pm -
3 stops37h 04m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/5![Multiple Airlines logo]()
$406
This Kiwi.com deal was found by Cheapflights users on 11/5. 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 1/1710:29 pm -
3 stops54h 21m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/5![Multiple Airlines logo]()
$410
This oojo 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/153:40 pm -
Nonstop7h 25m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/2![Icelandair logo]()
$419
This oojo deal was found by Cheapflights users on 11/7. 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.
Sat 12/123:40 pm -
Nonstop7h 25m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/7![Icelandair logo]()
$420
This Kiwi.com deal was found by Cheapflights users on 11/5. 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 1/146:10 am -
2 stops28h 40m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/5![Multiple Airlines logo]()
$430
This Kiwi.com deal was found by Cheapflights users on 11/5. 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 1/1510:29 pm -
3 stops52h 21m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/5![Multiple Airlines logo]()
$440
This Kiwi.com deal was found by Cheapflights users on 11/4. 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 12/71:46 pm -
3 stops44h 29m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/4![Multiple Airlines logo]()
$441
Find flight deals from Denver to Keflavik Intl
Discover tips and strategies to find the most affordable flight options for your journey from Denver (DEN) to Keflavik Intl (KEF). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated November 7, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $534 (United Airlines) |
One-way from | $364 (Kiwi.com) |
Popular in | August |
Cheapest in | February |
Average price | $623 |
Good round-trip deal | $591 or less |
Good one-way deal | $306 or less |
Cheapflights Fare Finder
Customize your flight search to find flights from Denver 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 7,457,451 searches. Data last updated November 7, 2026.
Use the filters below to find and compare flights from Denver to Reykjavik Keflavik Intl Airport that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
DenverReykjavik
DEN Denver Intl - KEF Reykjavik Keflavik Intl
DENKEF
Denver Intl
Tue 2/9
10:58 am-5:15 pm
2 stops23h 17m
Reykjavik Keflavik Intl
Wed 12/31
12:00 am-5:00 pm
Nonstop0h 00m
$376
DenverReykjavik
DEN Denver Intl - KEF Reykjavik Keflavik Intl
DENKEF
Denver Intl
Mon 12/7
1:46 pm-5:15 pm
3 stops44h 29m
Reykjavik Keflavik Intl
Wed 12/31
12:00 am-5:00 pm
Nonstop0h 00m
$441
Quickest round-trip
DenverReykjavik
DEN Denver Intl - KEF Reykjavik Keflavik Intl
DENKEF
Denver Intl
Sun 1/17
3:40 pm-6:05 am
Nonstop7h 25m
Reykjavik Keflavik Intl
Wed 12/31
12:00 am-5:00 pm
Nonstop0h 00m
$475
DenverReykjavik
DEN Denver Intl - KEF Reykjavik Keflavik Intl
DENKEF
Denver Intl
Sat 11/14
8:55 pm-11:00 am
3 stops55h 05m
Reykjavik Keflavik Intl
Wed 12/31
12:00 am-5:00 pm
Nonstop0h 00m
$493
DenverReykjavik
DEN Denver Intl - KEF Reykjavik Keflavik Intl
DENKEF
Denver Intl
Sat 11/14
3:40 pm-6:05 am
Nonstop7h 25m
Reykjavik Keflavik Intl
Wed 12/31
12:00 am-5:00 pm
Nonstop0h 00m
$550
DenverReykjavik
DEN Denver Intl - KEF Reykjavik Keflavik Intl
DENKEF
Denver Intl
Sat 11/14
11:59 pm-10:00 am
2 stops27h 01m
Reykjavik Keflavik Intl
Wed 12/31
12:00 am-5:00 pm
Nonstop0h 00m
$555
DenverReykjavik
DEN Denver Intl - KEF Reykjavik Keflavik Intl
DENKEF
Denver Intl
Sun 11/15
11:15 am-10:00 am
1 stop15h 45m
Reykjavik Keflavik Intl
Wed 12/31
12:00 am-5:00 pm
Nonstop0h 00m
$555
DenverReykjavik
DEN Denver Intl - KEF Reykjavik Keflavik Intl
DENKEF
Denver Intl
Mon 12/7
5:55 pm-10:00 am
2 stops57h 05m
Reykjavik Keflavik Intl
Mon 12/14
12:00 pm-6:03 pm
1 stop13h 03m
$559
DenverReykjavik
DEN Denver Intl - KEF Reykjavik Keflavik Intl
DENKEF
Denver Intl
Sat 12/12
7:10 pm-10:00 am
2 stops31h 50m
Reykjavik Keflavik Intl
Wed 12/31
12:00 am-5:00 pm
Nonstop0h 00m
$561
DenverReykjavik
DEN Denver Intl - KEF Reykjavik Keflavik Intl
DENKEF
Denver Intl
Sun 1/3
3:40 pm-6:05 am
Nonstop7h 25m
Reykjavik Keflavik Intl
Sat 1/16
4:55 pm-6:00 pm
Nonstop8h 05m
$736
Showing 1-10 of 19 resultsSorted by cheapest first
Compare providers for flights from Denver to Keflavik Intl
Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Denver to Keflavik Intl in November.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy2 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*2 stars |
- Most accurate provider: When it comes to deals on Denver-Reykjavik Keflavik Intl Airport flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Denver-Reykjavik Keflavik Intl Airport flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Denver-Reykjavik Keflavik Intl Airport flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Denver-Reykjavik Keflavik Intl Airport flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Denver-Reykjavik Keflavik Intl Airport flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.
Best time to book a flight from Denver to Keflavik Intl
Have a flexible travel schedule? Discover the best time to fly to Keflavik Intl from Denver with our price prediction graph.
DEN-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 Denver to Reykjavik Keflavik Intl Airport
How far ahead should I book a flight from Denver to Reykjavik Keflavik Intl Airport?
To ensure you get the cheapest price possible for a flight from Denver to Reykjavik Keflavik Intl Airport, you should look to book at least 3 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.
What is the cheapest month to book a flight from Denver to Reykjavik Keflavik Intl Airport?
Currently, February is the cheapest month in which you can book a flight from Denver to Reykjavik Keflavik Intl Airport (average of $448). Flying from Denver to Reykjavik Keflavik Intl Airport in August is currently the most expensive (average of $764). 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 DEN to KEF?
Find hourly flight availability from Denver 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 November 7, 2026.
Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Denver to Reykjavik Keflavik Intl Airport as you normally would.
Reviews of airlines servicing Keflavik Intl
Get insights into the airlines that provide service to Keflavik Intl. 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 Keflavik Intl. Reviews last updated November 7, 2026.
Peruse reviews from past customers who have flown with United Airlines and Icelandair from Denver to Reykjavik Keflavik Intl Airport to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Boarding
7.7
Crew
8.1
Food
6.7
Entertainment
7.1
Comfort
7.3
Overall
7.3
Reviews
1 / 20
10.0
ExcellentMichelle,Dec 2025
DEN - MKE
Boarding
7.7
Crew
8.1
Food
6.7
Entertainment
7.1
Comfort
7.3
Overall
7.3
Reviews
1 / 20
10.0
ExcellentMichelle,Dec 2025
DEN - MKE
Boarding
7.7
Crew
8.1
Food
6.7
Entertainment
7.1
Comfort
7.3
Overall
7.3
Reviews
1 / 20
10.0
ExcellentMichelle,Dec 2025
DEN - MKE
Related info for your journey
Find useful and relevant information for your journey from Denver 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 locationsHveragerdi
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Top 2 airlines flying from Denver to Keflavik Intl
Discover the top 2 airlines that operate flights from Denver 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 7,457,451 searches. Data last updated November 7, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$431 | Average$485 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$448 | Average$639 | FlexibilityNo cancel fee | On-time76% |