$129 Find Cheap United Airlines Flights from Boston to Seattle

When to Book Flights with United Airlines from Boston to Seattle

• Is United Airlines the cheapest airline to fly with from Boston to Seattle?

  With an average price of $393 return, United Airlines is not the cheapest airline to fly from Boston to Seattle with. Instead, for the lowest price, our data suggests flying with Spirit Airlines, where a return flight costs $285 on average.

• What is the cheapest United Airlines flight from Boston to Seattle?

  In the last 3 days, the lowest price for a flight with United Airlines from Boston to Seattle was $164 for a return flight and $123 for a one-way flight.

• Does United Airlines fly direct to Seattle from Boston?

  Yes, United Airlines does offer direct flights for the route, with around 8 flights per week.

• What’s the cheapest day of the week to fly from Boston to Seattle with United Airlines?

  On average, the cheapest day of the week to fly from Boston to Seattle with United Airlines is Friday, when prices are around $118. The most expensive day is generally Saturday, where the average price is around $231.

• What’s the cheapest month to fly from Boston to Seattle with United Airlines?

  The cheapest month for United Airlines flights to Seattle from Boston is generally September, where plane tickets cost $184 on average. If possible, try to avoid the most expensive months of March and November, where tickets cost $349 and $417 respectively.