Vuelos Desde Seattle - Tacoma Intl. (SEA) a A. Internacional Logan (BOS) Empezando Desde $120

If you’re looking to venture from SEA to BOS in the shortest possible time, you’ll be glad to know multiple airlines operate nonstop flights. Choose your preferred seat with Delta or Alaska Airlines.

It takes approximately 5 hours and 16 minutes to fly from SEA to Logan Intl. Airport (BOS). You’ll be in the air for a while, so keep yourself amused with a podcast or get stuck into the airway’s magazines.

From Seattle - Tacoma Intl. Airport (SEA) to Logan Intl. Airport (BOS), the flight distance is 2,500 mi. It’s a long ride, so make sure you bring along all the carry-on essentials. A pair of compression tights and warm clothes are great items to start with.

There are a couple of airlines advertising direct flights from SEA to Logan Intl. Airport (BOS). Delta (DL) is one of the most reliable, and operates 86 flights every month. If that’s not enough for you, have a look at the fares on offer from Alaska Airlines (AS). This airline operates 82 flights on the Seattle to Boston route each month. Between the two, you’re bound to find the flight to suit your travel needs.

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.