Cheap flights from Seattle to Copenhagen from $191

The cheapest month to fly to Copenhagen from Seattle is in February. Flight prices, which tend to average around $501, are often lower during this time because this is during the off-season. If you aren’t able to travel to Copenhagen during the month of February, then flying in April is also cheap. Prices for this month can be found on momondo for an average of $516.

The cheapest day to depart from Seattle to Copenhagen is on a Monday when prices can be found for as low as $737. When flying out on a Friday, the most expensive travel day of the week, you can expect to see flight prices from Seattle to Copenhagen for around $847.

Fly from Seattle/Tacoma Intl to Kastrup Copenhagen for the best Seattle/Tacoma Intl - Kastrup Copenhagen flight prices

You are more likely to see cheaper flights to Copenhagen from Seattle when booking weeks ahead of your departure date. In general, you can expect to find flights to Copenhagen for around $633 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Copenhagen from Seattle for as low as $604 on momondo.

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

As of September 2026, prices for Seattle to Copenhagen flights are approximately 54% cheaper when compared to flights at the same time last year.

Icelandair and Lufthansa are the most popular carriers operating from Seattle/Tacoma Intl to Kastrup Copenhagen

Scandinavian Airlines, Icelandair and Delta are the top three most popular airlines that fly to Copenhagen from Seattle according to our data. Scandinavian Airlines is the first choice among our users, with 48% of people opting to fly with this airline when traveling to Copenhagen. Keep in mind that there are 10 different airlines that fly to Copenhagen on a routine basis, so you have a few additional options to choose from.

Reykjavik (KEF) was the most common stop: 52% of momondo users choosing 1-stop flights on this route connected there.

Flights via Boston (BOS) offer the lowest average round-trip price of $656.

Flights connecting via Reykjavik (KEF) have the shortest average one-way travel time: 13h 05m.

London (LHR) has the shortest average layover time for this route: 1h 37m.

1 flights are operational daily from Seattle to Copenhagen as of September 2026. The most popular departure time for this route is 3:00PM, with 100% of flights per day taking off in the afternoon.

As of September 2026, 12 flights take off from Seattle and land in Copenhagen each week. The most common flight departure day for this route is Tue, with 25% of weekly flights taking off on this day.