Find Cheap Flights from Seattle to Boston (SEA - BOS)

Flights overview

Useful information for finding cheap flights from Seattle to Boston and booking your next trip

Cheapest round-trip flights	$237	Delta Nonstop 6 hr Sat, Feb 28 — Sat, Mar 7	The cheapest round-trip flight from Seattle to Boston is currently $237
Cheapest one-way flight	$119	Alaska Nonstop 6 hr Wed, Feb 25	The cheapest one-way flight from Seattle to Boston is currently $119
Cheapest nonstop flights	$237	Delta Nonstop 6 hr Sat, Mar 7 — Sat, Mar 14	The cheapest nonstop round-trip flight from Seattle to Boston is currently $237
Last-minute weekend getaway	$568	United 1 stop 10 hr Fri, Jan 23 — Sun, Jan 25	The cheapest last-minute weekend getaway from Seattle to Boston is currently $568
Cheapest business class flights	$1,052	United 1 stop 11 hr Mon, Mar 2 — Tue, Mar 10	The cheapest business class round-trip flight from Seattle to Boston is currently $1,052

Fastest flight	5 hr 14 min	The fastest nonstop flight from Seattle to Boston takes 5 hr 14 min
Nonstop flights	Every day	There are direct flights on this route every day.

When is the cheapest time to fly?

The cheapest month to fly from Seattle to Boston is typically March. The most expensive month to fly is typically December.

March Cheapest	Typical prices: $205–300
December Most expensive	Typical prices: $290–580

Popular airlines from Seattle to Boston

Delta

Nonstop

from $237

Typical price: $270–570

14 weekly nonstop flights

SEA - BOS Every day

266 weekly connecting flights

SEA - BOS Every day
Alaska

Nonstop

from $257

Typical price: $275–610

14 weekly nonstop flights

SEA - BOS Every day

14 weekly connecting flights

SEA - BOS Every day
American

from $257

Typical price: $270–550

216 weekly connecting flights

SEA - BOS Every day
United

from $260

Typical price: $265–520

196 weekly connecting flights

SEA - BOS Every day
Southwest

from $327

Typical price: $325–610

32 weekly connecting flights

SEA - BOS Every day
Frontier

Typical price: $270–690

6 weekly connecting flights

SEA - BOS Every Mon, Thu, Fri, Sun

Popular airports near Seattle

Seattle-Tacoma International Airport (SEA)

Seattle United States 18 min 11 mi
Paine Field (PAE)

Everett United States 31 min 21 mi
King County International Airport - Boeing Field (BFI)

Seattle United States 11 min 5 mi
Portland International Airport (PDX)

Portland United States 2 hr 44 min 140 mi

Popular airports near Boston

Boston Logan International Airport (BOS)

Boston United States 12 min 2 mi
John F. Kennedy International Airport (JFK)

New York United States 3 hr 39 min 184 mi
LaGuardia Airport (LGA)

New York United States 3 hr 27 min 181 mi
Rhode Island T.F. Green International Airport (PVD)

Providence United States 1 hr 7 min 47 mi

Frequently asked questions about flying from Seattle to Boston

The cheapest flights from Seattle to Boston are usually in March. Typical ticket prices in March range from $205 to $300.

The cheapest round-trip flight from Seattle to Boston recently found on Google Flights was with Delta from $237. The cheapest one-way flight was with Alaska from $119.

Some of the cheapest round-trip deals we found with different airlines:

The cheapest Delta flight from Seattle to Boston is $237, flying from Mar 7 to Mar 14.
The cheapest Alaska flight from Seattle to Boston is $257, flying from Feb 28 to Mar 7.
The cheapest American flight from Seattle to Boston is $257, flying from Feb 28 to Mar 7.
The cheapest United flight from Seattle to Boston is $260, flying from Feb 28 to Mar 7.
The cheapest Southwest flight from Seattle to Boston is $327, flying from Mar 2 to Mar 10.

The cheapest round-trip flight from Seattle to Boston starts at $237 from Sat, Feb 28 to Sat, Mar 7. The cheapest one-way flight starts at $119 and departs on Wed, Feb 25.

5 hr 14 min is the shortest flight time from Seattle to Boston.

Boston is a year-round destination with a 4-season climate. Spring and fall feature generally mild weather, although snow sometimes falls in early spring (Apr). Summer can be humid. Foliage season (mid-Sep–Nov) attracts the largest crowds. Patriots Day (3rd Mon of Apr) commemorates the start of the Revolutionary War and coincides with the famed Boston Marathon. Summer festivals include Boston Harborfest, the city’s weeklong 4th of July party, and Italian-American celebrations in the North End (late Jul–Aug).

It's easy to use Google Flights to find the cheapest days to fly from Seattle to Boston.
Just click the Departure label near the top of the page to open the calendar. Choose a start date and a return date to see how the round-trip fare changes on those specific days.
Adjust the trip type to see one-way fares. The cheapest available flights are highlighted and easy to spot. Once you settle on dates, click the Search button to see flight options and book the deal.

You can also turn on price tracking to get alerts if the price changes for a route or flight.

What counts as the best airline for your flights from Seattle to Boston really depends on your individual needs. You may have a favorite carrier or a loyalty program you like, but price, convenience, and airports served also come into play. Flexibility and booking terms – Can you change flights if you want to stay longer or get a refund if you have to postpone your trip? – are also factors that help determine which airline is best to fly from Seattle to Boston.

In terms of nonstop flights, Delta is the most popular. Delta offers 14 nonstop flights and 266 connecting flights per week. Delta flies from Seattle-Tacoma International Airport (SEA) to Boston Logan International Airport (BOS) .

Other popular airlines flying from Seattle to Boston are:

Alaska offers 14 nonstop flights and 14 connecting flights per week. Alaska flies from Seattle-Tacoma International Airport (SEA) to Boston Logan International Airport (BOS) .
American offers 216 connecting flights per week. American flies from Seattle-Tacoma International Airport (SEA) to Boston Logan International Airport (BOS) .
United offers 196 connecting flights per week. United flies from Seattle-Tacoma International Airport (SEA) to Boston Logan International Airport (BOS) .
Southwest offers 32 connecting flights per week. Southwest flies from Seattle-Tacoma International Airport (SEA) to Boston Logan International Airport (BOS) .
Frontier offers 6 connecting flights per week. Frontier flies from Seattle-Tacoma International Airport (SEA) to Boston Logan International Airport (BOS) .

The number of connecting flights refers to distinct flights with at least one stop between Seattle and Boston.

The cheapest round-trip flight from Seattle to Boston recently found on Google Flights was with Delta from $237. The cheapest one-way flight was with Alaska from $119.

Some of the cheapest round-trip deals we found with different airlines:

The cheapest Delta flight from Seattle to Boston is $237, flying from Mar 7 to Mar 14.
The cheapest Alaska flight from Seattle to Boston is $257, flying from Feb 28 to Mar 7.
The cheapest American flight from Seattle to Boston is $257, flying from Feb 28 to Mar 7.
The cheapest United flight from Seattle to Boston is $260, flying from Feb 28 to Mar 7.
The cheapest Southwest flight from Seattle to Boston is $327, flying from Mar 2 to Mar 10.

Alaska and Delta fly direct from Seattle to Boston.

There are 14 Delta direct flights from Seattle to Boston per week. Flights are available every day.
There are 14 Alaska direct flights from Seattle to Boston per week. Flights are available every day.

Use the Stops filter while searching for flights, to see only nonstop options in your results.

The cheapest last-minute deal between Seattle and Boston at price $568 is offered by United from Fri, Jan 23 to Sun, Jan 25.

Alaska and Delta fly direct from Seattle to Boston.

There are 14 Delta direct flights from Seattle to Boston per week. Flights are available every day.
There are 14 Alaska direct flights from Seattle to Boston per week. Flights are available every day.

Use the Stops filter while searching for flights, to see only nonstop options in your results.

There are direct flights from Seattle to Boston on a daily basis.

The cheapest direct (nonstop) round-trip flights between Seattle and Boston start at $237 from Sat, Mar 7 to Sat, Mar 14 with Delta.

It's easy to find nonstop flights with Google Flights! Once you've searched for flights from Seattle to Boston, just select the nonstop flights only option in the 'Stops’ filter in the search form and view all available direct flights and their prices.

The cheapest business class round-trip flights between Seattle and Boston start at $1,052 from Mon, Mar 2 to Tue, Mar 10 with United.

The cheapest economy class round-trip flights between Seattle and Boston start at $237 from Sat, Feb 28 to Sat, Mar 7.

To book business class trips from Seattle to Boston, look for the default Economy selection at the top, and change it to your desired cabin class such as Premium Economy, Business Class, or First Class. You can then select your departure and arrival dates, consider available options, and book your business travel.

You can also adjust the trip type to view one-way fares.

The best last-minute getaway deal for the next weekend between Seattle and Boston starts at $568 from Fri, Jan 23 to Sun, Jan 25 with United.

The cheapest last-minute deal between Seattle and Boston at price $568 is offered by United from Fri, Jan 23 to Sun, Jan 25.

To find last-minute flight deals from Seattle to Boston, start by entering the city names, select the desired departure and return dates, and hit the Search button to view flight options.

You can check for last-minute flights for the same day or adjust the trip type to see one-way fares.