Vuelos de American Airlines de Boston (BOS) a Seattle (SEA) desde $157

Be sure to go to the Covid-19 Travel Advisor to find out if there are any current travel advice reports and quarantine requirements in place in Sea-Tac Airport when flying in from BOS.

If you’re flying between Logan Intl. Airport and SEA with American Airlines, you’re likely to be leaving from terminal C. Your airline should be able to let you know exactly which terminal you’ll be landing at.

American Airlines doesn’t have direct flights between Logan Intl. Airport (BOS) and Seattle - Tacoma Intl. Airport (SEA), so prepare to make a stopover. If you have enough time between flights, enjoy a coffee while waiting for your connection.

As it will take roughly 9 hours and 22 minutes for your American Airlines flight to get from BOS to SEA, consider packing a travel game or two in your hand luggage. You never know — the person next to you might appreciate the chance to play to break up the trip.

If you’re venturing from BOS to SEA with American Airlines, you’ll probably be flying the skies aboard the Airbus A320 family or the Boeing 737 MAX 9.

American Airlines operates approximately 6 flights per day from Logan Intl. Airport (BOS) to Seattle - Tacoma Intl. Airport (SEA).

For more info about changing your flight to Sea-Tac Airport, please visit our Customer Service Portal.

This just in! Airfares offered on Thursdays tend to be the cheapest, according to flight demand on Travelocity in 2021. Tuesday and Wednesday prices are also good, but you may want to prepare your budget if booking during the weekend, as data shows that is when prices are generally at their highest.

Frequent travelers may already know this, but earlier in the week can be the cheapest time to fly. In 2021, flights departing on a Monday were generally the cheapest of the week, whereas you may pay a premium for weekend flights when demand is usually high. On average, tickets were most expensive for Saturday departures, so if you need to fly out on a weekend, you might look for deals ahead of time.

Trying to figure out how early you should book your flight? It’s possible to start comparing international airfares on Travelocity up to 12 months in advance. However, it does depend on the carrier as not all airlines release their prices that far out. According to our 2021 flight demand trends, last minute planners can still bag a bargain with some of the cheapest fares appearing 0-2 weeks prior to their travel dates.*According to flight demand on Travelocity.com from January to December 2021. Savings are subject to change based on departure location, date and destination.