Cheap flights from Seattle to Reykjavik from $357

The month of October is, on average, the cheapest month to fly to Reykjavik from Seattle, with most prices found around $498. The month of November is another great option to travel to Reykjavik, with average flight prices from Seattle averaging around $547.

Our data shows that Wednesday is the least expensive day to fly to Reykjavik. Tickets to fly out on this day can be as low as $573. Flights from Seattle to Reykjavik on a Friday will generally be more expensive and average around $610. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

Flying to Reykjavik from Seattle at noon is the least expensive time of day to depart. momondo users have found prices as low as $535 when looking at flights departing at noon. Flights to Reykjavik are more costly in the evening, with an average ticket price of $619. Departure times in the evening fall within the peak daily travel times, which is why tickets can be more expensive.

Fly from Seattle/Tacoma Intl to Reykjavik Keflavik Intl for the best Seattle/Tacoma Intl - Reykjavik flight prices

You are more likely to see cheaper flights to Reykjavik from Seattle when booking weeks ahead of your departure date. In general, you can expect to find flights to Reykjavik for around $623 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Reykjavik from Seattle for as low as $496 on momondo.

There are 3 cabin classes available to choose from on Seattle/Tacoma Intl to Reykjavik flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

You could potentially save up to 41% on your flight if you consider stops on a Seattle to Reykjavik flight.

As of February 2026, prices for Seattle to Reykjavik flights are approximately 12% cheaper when compared to flights at the same time last year.

The number of flights available between Seattle and Reykjavik is 2 per day as of February 2026. The most frequent departure time is 2:00PM, with 100% of daily flights leaving in the afternoon.

The number of flights available between Seattle and Reykjavik is 14 per week as of February 2026. The most frequent departure day is Mon, with 21% of weekly flights leaving on this day.