$442 Cheap Icelandair flights Denver (DEN) to Reykjavik (KEF)

You'll discover cheap round-trip Icelandair flights from $448 from DEN to KEF by filtering your results from "Price (lowest to highest)" on Expedia. Or look for options from $442 for a one-way journey.**These prices were available on Expedia within the past 7 days, for flights departing within the next year. Prices and availability are subject to change. Additional terms apply.

To get affordable flights from DEN to KEF with Icelandair, start your search about one month before your intended departure. You can save 17% when you lock in your international tickets 18 to 29 days ahead instead of booking four to five months in advance. Want another tip? Booking on Sunday offers average savings of 17% compared to Friday (the most expensive day).**Ideal booking window recommendation is based on average round-trip ticket prices for January through November for 2024. Best day of the week to book recommendation is based on average round-trip ticket prices for January through October 2024. All data sourced from ARC's global airline sales database.

The first flight from DEN to KEF with Icelandair leaves at 3:40PM UTC-7. You'll touch down at 6:05AM UTC+0. The last Icelandair flight of the day takes off at 3:40PM UTC-7 and arrives at 6:05AM UTC+0. With approximately 20% fewer cancellations for morning and mid-morning flights, beginning your travel day early is generally the best way to go.**Most reliable time of the day recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.

Icelandair makes traveling from DEN to KEF more enjoyable with top-tier customer service and a rewarding loyalty program. You also have the chance to earn points with Icelandair Saga Club. Don't forget to join our free One Key™ rewards program to earn OneKeyCash™*, which can be redeemed on future bookings.*OneKeyCash™ disclaimer - OneKeyCash™ is not redeemable for cash and can only be used on Expedia, Hotels.com and Vrbo.