JetBlue, Delta, and Alaska Airlines have round-trip flights from Seattle (SEA) to Boston (BOS) for $198-$208, NONSTOP. Flights October to November. No Thursday departures. Extended weekends available. Origin/Destination reversible.
Note: This route may require mixed carriers if you select Alaska Airlines. For example Alaska outbound and either Delta or JetBlue inbound. Use the links provided below to pull up examples of the fare.
A Carry-on bag and also a personal item is allowed for free on Delta and Alaska Airlines. You can avoid paying for seat selection by accepting the randomly assigned seat at the gate.
JetBlue’s “Basic” fares only allow a small personal item (17 x 13 x 8 inches), like a Jansport SuperBreak backpack without a fee. A regular sized carry-on bag will incur a bag fee. To avoid bag fees, consider using the JetBlue Plus credit-card for the free checked-bag perk.
Click for more details and booking links Nonstop Flights: Seattle to/from Boston $198-$208 r/t [October-November] – JetBlue / Delta / Alaska Airlines