$78 Find Cheap Southwest Flights from Seattle to Denver

When to Book Flights with Southwest from Seattle to Denver

• How far in advance should I book tickets for a flight with Southwest from Seattle to Denver?

  Generally, when trying to get a below average price for your ticket, try to book around 21 days before departure. For the cheapest possible price, our data suggests booking 80 days before departure.

• Is Southwest the cheapest airline to fly with from Seattle to Denver?

  With an average price of $255 return, Southwest is not the cheapest airline to fly from Seattle to Denver with. Instead, for the lowest price, our data suggests flying with Frontier, where a return flight costs $166 on average.

• What is the cheapest Southwest flight from Seattle to Denver?

  In the last 3 days, the lowest price for a flight with Southwest from Seattle to Denver was $116 for a return flight and $73 for a one-way flight.

• Does Southwest fly direct to Denver from Seattle?

  Yes, Southwest does offer direct flights for the route, with around 23 flights per week.

• What’s the cheapest day of the week to fly from Seattle to Denver with Southwest?

  On average, the cheapest day of the week to fly from Seattle to Denver with Southwest is Friday, when prices are around $74. The most expensive day is generally Sunday, where the average price is around $96.

• What’s the cheapest month to fly from Seattle to Denver with Southwest?

  The cheapest month for Southwest flights to Denver from Seattle is generally January, where plane tickets cost $129 on average. If possible, try to avoid the most expensive months of August and June, where tickets cost $213 and $313 respectively.