$359 Find Cheap Flights from Seattle to Boston – Compare and Save

These are the earliest and latest flight times available from Seattle to Boston:

• Earliest: departs at 07:15 and lands at 12:39
• Latest: departs at 23:59 and lands at 05:23.

The flight takes about 5h 24m.

A direct flight from Seattle to Boston takes 5h 24m, covering 6,441 km.

No, a passport is not required for this domestic route, but you will need another form of identification, such as a driving licence.

Return flights from Seattle to Boston range from $652 to $1,022, with an average of $813 over the past 12 months. Anything below $652 counts as a good deal.

Last-minute fares on this route (booked within two weeks of departure) run 38% above the $813 route average. Book 25 weeks before departure for the lowest fares.

On this route, stopover flights are cheaper than direct options on average. Stopover fares average $491 return via Baltimore/Washington (BWI), compared with $817 for direct.

Delta is slightly above the route average for timely arrivals, while Alaska Airlines has a lower on-time arrival rate. On-time arrival rates on Seattle to Boston flights are:

• Delta: 88% on time
• Alaska Airlines: 85% on time
• JetBlue: 58% on time

On average, flights on this route are punctual 83% of the time.

There is no standard. Checked bag policies vary by airline on this route. Most carriers charge $62–$176 for the first checked bag in Economy. Premium fares and elite status bookings typically include a free checked bag.

The Airbus A321neo family is used most often on this route, operated mainly by Delta. Other aircraft seen on the route include Airbus A321-100/200 variants.

Morning is the busiest departure period on Seattle to Boston flights, with 34% leaving in that window. Afternoon departures account for 33%, Night flights for 33%, and Evening flights for 0%.

Yes. Based on fares seen in the past 5 days, return flight prices on this route showed a wide range, from about $549 to $3,090. That means the highest observed fare was about 6x higher than the lowest one.

Three airlines offer in-flight Wi-Fi on Seattle to Boston flights:

• Delta
• Alaska Airlines
• JetBlue

Pricing varies by airline and fare class. Some plans are included with the ticket or loyalty programme, while others are paid add-ons priced by flight length.

One-way fares from Seattle to Boston are currently lower than usual. Average one-way flight prices are about $388, which is 23% below the typical average for this route.

Boston Logan Intl Airport (BOS) hosts 5 major car rental companies, with daily rates starting from around $41 for economy cars. Top options include:

• Dollar
• Hertz
• Budget
• Thrifty
• Sixt

Flights from Seattle to Boston usually depart from Seattle/Tacoma Intl (SEA) and arrive at Boston Logan Intl (BOS).

Night flights have the fewest delays on this route, while morning departures tend to have the most.

A flight is considered delayed when it departs 15 minutes or more after its scheduled time. This is the standard used by the US Department of Transportation and most airline industry reporting. On the Seattle to Boston route, 17% of flights were delayed in the past three months, with delays averaging 2h 59m.

One-stop flights from Seattle to Boston most commonly connect through:

• Minneapolis St Paul (MSP) – 45% of one-stop connections
• Chicago O'Hare Intl (ORD) – 21% of one-stop connections
• Philadelphia (PHL) – 10% of one-stop connections
• Chicago Midway (MDW) – 10% of one-stop connections

Yes. Flexible dates can save you up to 20% on flights from Seattle to Boston. Tuesday is the cheapest departure day at $740 return on average, while Sunday is the most expensive at $914, a difference of $174.

KAYAK's flexible dates feature shows options up to three days before and after your selected dates, making it easier to compare nearby fares.

3 airlines operate flights between Seattle and Boston. The airlines offering direct flights on this route include:

• Delta
• Alaska Airlines
• JetBlue

Flying via Denver Intl (DEN) gives the shortest average 1-stop total travel time of 8h 21m, compared to 8h 22m via Chicago Midway (MDW) and 8h 23m via Salt Lake City (SLC).

Boston is 3 hours ahead of Seattle (Eastern Time vs Pacific Time). Plan for the time shift when scheduling connections or first-day activities.

Among airlines operating Seattle to Boston flights:

• Delta: offers extra legroom; offers free seat selection
• Alaska Airlines: offers extra legroom; offers free seat selection
• JetBlue: offers extra legroom; offers free seat selection
• American Airlines: offers free seat selection

Extra legroom and free seat selection availability depends on fare class and route.

Here are some options for this route, based on selected ticket types and cabin classes:

• Delta: a cabin bag and a checked bag in Economy class
• Alaska Airlines: a cabin bag and a checked bag in Economy class
• American Airlines: a cabin bag and a checked bag in Business Class

Baggage allowance can vary by ticket type, cabin class, route, and airline, so always check the fare details before booking.

Moving around the Logan airport is the least of your worries since the airport provides free bus services. They ferry travelers to various spots at varying intervals. The buses are easy to board and to load luggage, thanks to their low floors. They also have a wheelchair lift, making them friendly to the disabled. You’ll find them to the south of each terminal.

The airport works toward giving travelers a memorable experience when waiting for their flights. You can find advanced facilities and welcoming staff to help you move around and offer you all the assistance needed. The disabled can access wheelchair services, which the airport provides at no cost upon making a reservation.

You can get accommodation near Logan airport for approximately $144. Take a free shuttle bus at the terminals to access hotels such as the Homewood Suites, located 3.5 miles away. Enjoy an indoor pool table, Wi-Fi, and a fitness center. The hotel serves complimentary breakfast too.

Travelers can enjoy a walking tour to explore attractions in the neighborhood using underground paths and learn about the history. Waiting for your flight does not have to be boring, as there is too much fun around the airport.