$105 Find Cheap Frontier Flights from Philadelphia to Seattle

When to Book Flights with Frontier from Philadelphia to Seattle

• Is Frontier the cheapest airline to fly with from Philadelphia to Seattle?

  Yes, based on our data, Frontier is the cheapest airline to fly the route with an average price of $235 return. The next cheapest options are Spirit Airlines and JetBlue, with return flights costing on average $245 and $261 respectively.

• What is the cheapest Frontier flight from Philadelphia to Seattle?

  In the last 3 days, the lowest price for a flight with Frontier from Philadelphia to Seattle was $320 for a return flight and $147 for a one-way flight.

• Does Frontier fly direct to Seattle from Philadelphia?

  No, Frontier does not fly the route directly.

• What’s the cheapest day of the week to fly from Philadelphia to Seattle with Frontier?

  On average, the cheapest day of the week to fly from Philadelphia to Seattle with Frontier is Wednesday, when prices are around $72. The most expensive day is generally Tuesday, where the average price is around $96.

• What’s the cheapest month to fly from Philadelphia to Seattle with Frontier?

  The cheapest month for Frontier flights to Seattle from Philadelphia is generally March, where plane tickets cost $85 on average. If possible, try to avoid the most expensive months of November and December, where tickets cost $231 and $234 respectively.