The cheapest times to fly from DTM to SEA are

  • January 8th to March 25th
  • April 9th to May 27th
  • October 22nd to December 16th

based on data collected exclusively by Champion Traveler across tens of millions of flights. Among all the dates above, the very cheapest time to fly from DTM to SEA is late January. Prices can be as high as $1927 for Sunday flights during early August, or as low as $846 for Thursday flights around late January.


When to Fly to Seattle

Flying from Dortmund (DTM) to Seattle, WA (SEA) will usually cost between $875 to $1410 per person if booking more than four weeks in advance. On average the very cheapest time to fly is late January with an average ticket price of $918. Due to high demand the most expensive time to fly is early August, with an average price of $1471. Planning your trip to low-cost times can easily save you $553 on economy flights and even more on first-class flights. Generally, any price below $1065 can be considered a good price for a round-trip DTM to SEA flight.

See below for a graph of average weekly prices for the DTM to SEA route. All prices are for round-trip tickets in USD.

DTM to SEA Flight Prices

Compared to other flights, the DTM to SEA flight is priced close to the average and costs about as much as the average flight leaving from Dortmund. The average price per mile (for a direct flight) is $0.13, which is far below average.


Flight Prices by Day of the Week

Thursday is usually the cheapest day to depart and return on this flight. Sundays are the most expensive days to fly to Seattle, and Saturdays are the most expensive days to return to Dortmund. Selecting flights on the least expensive days could save you up to $259 (14%) on this flight.

Departing prices are for round-trip flights returning on the day of departure. For example, a flight departing on Thursday and returning a week later will cost an average of $1054. Return trip prices are from the SEA to DTM flight, and often highlight the quality of our data in showing the same trend.

Departing Prices by Day

Departure Day Prices

Return Trip Prices by Day

Return Day Prices


Nonstop Flights and Layovers

Travelers looking to fly from DTM to SEA can generally find a 1-layover flight. Because there is not usually a direct flight option the real-world direct flight time of 9 hour 57 minutes may not be realistic.


Flight Hacking DTM to SEA

Flight hacking is when you book two tickets instead of a layover, sometimes with different airlines. You will need to either bring only a carry-on bag (highly recommended) or leave yourself plenty of time to go through security again. Flight hacking is completely allowed, but airlines don’t always tell you the cheapest way to get from DTM to SEA — but Champion Traveler does!

Hack #1: Munich (DTM > MUC > SEA)

  • Price for both tickets: $642
  • Average savings: $423 (39.72%)

See DTM to KTW flights

Hack #2: Katowice (DTM > KTW > SEA)

  • Price for both tickets: $854
  • Average savings: $211 (19.81%)

See DTM to MUC flights

Hack #3: Vienna (DTM > VIE > SEA)

  • Price for both tickets: $859
  • Average savings: $206 (19.34%)

See DTM to VIE flights


Flight Questions Answered

Still have questions about flying from DTM to SEA? We’ve got answers.

Which airlines fly this route?

You can find 5 major airlines flying this route most often: Air Canada, Alaska, Eurowings, Lufthansa, United, and potentially more during busy seasons.

How far away is it from Seattle/Tacoma International Airport to Dortmund Airport?

The distance between the two airports is roughly 4984 miles or 8021 kilometers.

How long does it take to fly from DTM to SEA?

The real-world flight time for a nonstop DTM to SEA flight is about 9 hour 57 minutes.

How many flights go between Dortmund and Seattle, WA?

It depends on the day of the week and the date, but a typical day might have around 17 available flights from DTM to SEA.


Airport Location Info


Departing Airport

Origination code DTM
Origination airport name Dortmund Airport
City Dortmund
Country Germany
Latitude 51.5
Longitude 7.6

Return Airport

Destination code SEA
Destination airport name Seattle/Tacoma International Airport
City Seattle, WA
Country the United States
Latitude 47.5
Longitude -122.3


Other Resources

Please note that while we’ve worked hard to analyzed tens of millions of flights to get you this data, we do not calculate current live prices or guarantee pricing. Please see our partners using the links above for current offers.