KEF to DEN from $391 in economy

FIIcelandair

Round Trip•Economy

KEF

Keflavík International Airport

Reykjavik (Keflavik), Iceland

DEN

Denver International Airport

Denver, United States

$728 USD

-46%$391 USD

Verified about 5 hours ago

September 2026

Today

Mon

Tue

Wed

Thu

Fri

Sat

Sun

31$404 1$404 2$404 3$404 4$404 5$404 6$404 7$581 8$544 9$544 10$404 11$404 12$555 13$544 14$595 15$581 16$544 17$544 18$581 19$658 20$581 21$595 22$555 23$404 24$567 25$544 26$581 27$595 28$404 29$404 30$567 1$531 2$531 3$553 4$531

Rare Availability

9% of dates checked are available within 10% of the lowest price

Monday, September 28th, 2026

10 round-trip options

Returning

Sat, Oct 3, 2026•5 Day Trip

$581 USD

Google Flights

Returning

Sun, Oct 4, 2026•6 Day Trip

$404 USD

Google Flights

Returning

Mon, Oct 5, 2026•7 Day Trip

$404 USD

Google Flights

Returning

Tue, Oct 6, 2026•8 Day Trip

$404 USD

Google Flights

Returning

Wed, Oct 7, 2026•9 Day Trip

$404 USD

Google Flights

Returning

Thu, Oct 8, 2026•10 Day Trip

$544 USD

Google Flights

Returning

Fri, Oct 9, 2026•11 Day Trip

$629 USD

Google Flights

Returning

Sat, Oct 10, 2026•12 Day Trip

$610 USD

Google Flights

Returning

Sun, Oct 11, 2026•13 Day Trip

$404 USD

Google Flights

Returning

Mon, Oct 12, 2026•14 Day Trip

$404 USD

Google Flights

Reykjavik (Keflavik) (KEF) to Denver (DEN) flight deal in economy from $391

Keflavík International Airport

Denver International Airport

September 2026

Monday, September 28th, 2026