The cheapest times to fly from HDN to SEA are

  • April 16th to May 6th
  • September 24th to November 11th (except the weeks of October 8th and October 29th)
  • December 17th to April 1st

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 HDN to SEA is late January. Prices can be as high as $907 for Friday flights during late November to early December, or as low as $260 for Tuesday flights around late January.


When to Fly to Seattle

Flying from Hayden, CO (HDN) to Seattle, WA (SEA) will usually cost between $380 to $681 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 $332. Due to high demand the most expensive time to fly is late November to early December, with an average price of $682. Planning your trip to low-cost times can easily save you $350 on economy flights and even more on first-class flights. Generally, any price below $532 can be considered a good price for a round-trip HDN to SEA flight.

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

HDN to SEA Flight Prices

Compared to other flights, the HDN to SEA flight is cheaper than the average and costs much less than the average flight leaving from Hayden. The average price per mile (for a direct flight) is $0.37, which is a bit above average.


Flight Prices by Day of the Week

Tuesday is usually the cheapest day to depart and return on this flight. Fridays are the most expensive days to fly out or take a return trip. Selecting flights on the least expensive days could save you up to $97 (17%) on this flight.

Departing prices are for round-trip flights returning on the day of departure. For example, a flight departing on Tuesday and returning a week later will cost an average of $475. Return trip prices are from the SEA to HDN 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 HDN to SEA can generally find a 0-layover flight. Because there is a direct flight option the real-world direct flight time of 2 hour 35 minutes may be realistic.


Flight Hacking HDN 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 HDN to SEA — but Champion Traveler does!

Hack #1: Denver, CO (HDN > DEN > SEA)

  • Price for both tickets: $518
  • Average savings: $14 (2.63%)

See HDN to DEN flights


Flight Questions Answered

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

Which airlines fly this route?

You can find 5 major airlines flying this route most often: Alaska, American, Delta, JetBlue, United, and potentially more during busy seasons.

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

The distance between the two airports is roughly 889 miles or 1431 kilometers.

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

The real-world flight time for a nonstop HDN to SEA flight is about 2 hour 35 minutes.

How many flights go between Hayden, CO and Seattle, WA?

It depends on the day of the week and the date, but a typical day might have around 62 available flights from HDN to SEA.


Airport Location Info


Departing Airport

Origination codeHDN
Origination airport nameYampa Valley Airport
CityHayden, CO
Countrythe United States

Return Airport

Destination codeSEA
Destination airport nameSeattle/Tacoma International Airport
CitySeattle, WA
Countrythe United States


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.