$99 Find Cheap Delta Flights from Boston to Seattle

Generally, when trying to get a below average price for your ticket, try to book around 7 days before departure. For the cheapest possible price, our data suggests booking 94 days before departure.

With an average price of $408 return, Delta 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 $287 on average.

In the last 3 days, the lowest price for a flight with Delta from Boston to Seattle was $130 for a return flight and $108 for a one-way flight.

Yes, Delta does offer direct flights for the route, with around 14 flights per week.

On average, the cheapest day of the week to fly from Boston to Seattle with Delta is Tuesday, when prices are around $99. The most expensive day is generally Saturday, where the average price is around $132.

The cheapest month for Delta flights to Seattle from Boston is generally February, where plane tickets cost $173 on average. If possible, try to avoid the most expensive months of August and December, where tickets cost $328 and $333 respectively.