Cheap flights from Seattle to Boston (SEA - BOS)

SEA — BOS
May 30 — Jun 61

The best prices from Seattle/Tacoma Intl to Boston Logan Intl are usually found in January or February, booked 60 days in advance, depart on a Tuesday or Wednesday and return on a Friday

How to find the cheapest flight from Seattle to Boston

All the information you need to plan the best SEA to BOS flight in 2022: compare Seattle to Boston flight prices with the expected peak season, weather and rainfall in Boston.

SEA - BOS

Price

$207 - $448

BOS

Temperature

30.2 - 73.4 °F

BOS

Rainfall

3.1 - 4 inches

Popular inDecemberHigh demand for flights, 35% potential price rise
Cheapest inJanuaryBest time to find cheap flights, 29% potential price drop
Round-trip from$207From Seattle/Tacoma Intl to Boston Logan Intl
One-way from$179One-way flight from Seattle/Tacoma Intl to Boston Logan Intl

What is the cheapest day to fly round-trip from Seattle to Boston?

Saturday flights are found to be more expensive to fly from Seattle to Boston. This shouldn’t discourage you from searching, as you can still find great deals by being flexible with your options. Use our search form to find deals on tickets to Boston.

How far in advance should I book a flight from Seattle to Boston?

When searching for a good deal, it’s best to be prepared for potential fluctuations in price. We recommend booking at least 61 days in advance, which can save you up to 62% on flights from Seattle to Boston compared to booking the week you need them. Waiting 61 days out may not be for everyone, so we have options available for flights within the next two weeks, with the lowest price starting at $377. For sooner than that we have options available in the next 3 days from $482.

When is the cheapest time to fly from Seattle to Boston (SEA - BOS)?

Unlike in the morning, when flights are generally more expensive, you can save up to 19% on flights from Seattle to Boston by exploring options for tickets at noon.

Cheap flights from Seattle to Boston in May, June 2022

The best prices found for SEA to BOS flights for May, June
Jun 3 - Jun 7
SEA

Seattle/Tacoma Intl

BOS

Boston Logan Intl

Nonstop

5h 23m
BOS

Boston Logan Intl

SEA

Seattle/Tacoma Intl

Nonstop

6h 17m
$378

Multiple Airlines

View Deal

Deal found 5/24/22

Jun 5 - Jun 6
SEA

Seattle/Tacoma Intl

BOS

Boston Logan Intl

Nonstop

5h 23m
BOS

Boston Logan Intl

SEA

Seattle/Tacoma Intl

Nonstop

6h 15m
$393

Multiple Airlines

View Deal

Deal found 5/24/22

Jun 2 - Jun 6
SEA

Seattle/Tacoma Intl

BOS

Boston Logan Intl

Nonstop

5h 23m
BOS

Boston Logan Intl

SEA

Seattle/Tacoma Intl

Nonstop

6h 15m
$394

Multiple Airlines

View Deal

Deal found 5/24/22

Seattle to Boston 2022 flight deals

Cheap flights to Boston from Seattle found for this year
Sep 20 - Sep 28
SEA

Seattle/Tacoma Intl

BOS

Boston Logan Intl

Nonstop

5h 19m
BOS

Boston Logan Intl

SEA

Seattle/Tacoma Intl

Nonstop

6h 36m
$218

Delta

View Deal

Deal found 5/24/22

Oct 18 - Oct 25
SEA

Seattle/Tacoma Intl

BOS

Boston Logan Intl

Nonstop

5h 16m
BOS

Boston Logan Intl

SEA

Seattle/Tacoma Intl

1 stop

10h 20m
$225

Multiple Airlines

View Deal

Deal found 5/23/22

Nov 5 - Nov 12
SEA

Seattle/Tacoma Intl

BOS

Boston Logan Intl

1 stop

9h 54m
BOS

Boston Logan Intl

SEA

Seattle/Tacoma Intl

Nonstop

6h 19m
$226

Multiple Airlines

View Deal

Deal found 5/24/22

Cheap JetBlue flights from Seattle to Boston

Sep 14 - Sep 21
SEA

Seattle/Tacoma Intl

BOS

Boston Logan Intl

Nonstop

5h 14m
BOS

Boston Logan Intl

SEA

Seattle/Tacoma Intl

Nonstop

6h 19m
$258

JetBlue

View Deal

Deal found 5/22/22

Oct 28 - Nov 1
SEA

Seattle/Tacoma Intl

BOS

Boston Logan Intl

Nonstop

5h 14m
BOS

Boston Logan Intl

SEA

Seattle/Tacoma Intl

Nonstop

6h 27m
$268

JetBlue

View Deal

Deal found 5/23/22

Sep 13 - Sep 20
SEA

Seattle/Tacoma Intl

BOS

Boston Logan Intl

Nonstop

5h 14m
BOS

Boston Logan Intl

SEA

Seattle/Tacoma Intl

Nonstop

6h 16m
$278

JetBlue

View Deal

Deal found 5/24/22

  • JetBlue is one of the most popular airlines used for those traveling from Seattle to Boston. Flights from JetBlue traveling this route typically cost $410.93 RT. This price is typically 63% more expensive than other airlines that offer Seattle to Boston flights. When booking this route, the cheapest RT price found was $138. The most popular departure airport in Seattle when flying to Boston is Seattle/Tacoma Intl Airport. The most popular airport to fly into when visiting Boston is Boston Logan Intl Airport. When flying from Seattle to Boston, JetBlue flights are 21% more popular than any other airline flying that same route.

Cheap American Airlines flights from Seattle to Boston

Oct 18 - Oct 26
SEA

Seattle/Tacoma Intl

BOS

Boston Logan Intl

1 stop

7h 36m
BOS

Boston Logan Intl

SEA

Seattle/Tacoma Intl

1 stop

8h 34m
$233

American Airlines

View Deal

Deal found 5/23/22

Oct 17 - Oct 26
SEA

Seattle/Tacoma Intl

BOS

Boston Logan Intl

1 stop

7h 06m
BOS

Boston Logan Intl

SEA

Seattle/Tacoma Intl

1 stop

8h 34m
$234

American Airlines

View Deal

Deal found 5/23/22

Oct 3 - Oct 15
SEA

Seattle/Tacoma Intl

BOS

Boston Logan Intl

1 stop

8h 20m
BOS

Boston Logan Intl

SEA

Seattle/Tacoma Intl

1 stop

9h 42m
$266

American Airlines

View Deal

Deal found 5/22/22

  • If you’re traveling from Seattle to Boston, one of the more common airlines traveling that route is American Airlines. Flights from American Airlines traveling this route typically cost $317.19 RT. This price is typically 74% more expensive than other airlines that offer Seattle to Boston flights. When booking this route, the cheapest RT price found was $111. The most popular departure airport in Seattle when flying to Boston is Seattle/Tacoma Intl Airport. The most popular airport to fly into when visiting Boston is Boston Logan Intl Airport. When flying from Seattle to Boston, American Airlines flights are 20% more popular than any other airline flying that same route.

Non-stop flights to Boston from Seattle

Save time with Seattle to Boston direct flight deals
Sep 20 - Sep 28
SEA

Seattle/Tacoma Intl

BOS

Boston Logan Intl

Nonstop

5h 19m
BOS

Boston Logan Intl

SEA

Seattle/Tacoma Intl

Nonstop

6h 36m
$218

Delta

View Deal

Deal found 5/24/22

Sep 20 - Sep 27
SEA

Seattle/Tacoma Intl

BOS

Boston Logan Intl

Nonstop

5h 14m
BOS

Boston Logan Intl

SEA

Seattle/Tacoma Intl

Nonstop

6h 36m
$228

Multiple Airlines

View Deal

Deal found 5/24/22

Oct 17 - Oct 25
SEA

Seattle/Tacoma Intl

BOS

Boston Logan Intl

Nonstop

5h 12m
BOS

Boston Logan Intl

SEA

Seattle/Tacoma Intl

Nonstop

6h 36m
$238

Multiple Airlines

View Deal

Deal found 5/25/22

Last minute flights from Seattle to Boston

Late deals on return flights to Boston from Seattle, departing today and this week
Jun 3 - Jun 7
SEA

Seattle/Tacoma Intl

BOS

Boston Logan Intl

Nonstop

5h 23m
BOS

Boston Logan Intl

SEA

Seattle/Tacoma Intl

Nonstop

6h 17m
$378

Multiple Airlines

View Deal

Deal found 5/24/22

Jun 2 - Jun 6
SEA

Seattle/Tacoma Intl

BOS

Boston Logan Intl

Nonstop

5h 23m
BOS

Boston Logan Intl

SEA

Seattle/Tacoma Intl

Nonstop

6h 15m
$394

Multiple Airlines

View Deal

Deal found 5/24/22

Jun 2 - Jun 7
SEA

Seattle/Tacoma Intl

BOS

Boston Logan Intl

Nonstop

5h 23m
BOS

Boston Logan Intl

SEA

Seattle/Tacoma Intl

Nonstop

6h 17m
$414

Multiple Airlines

View Deal

Deal found 5/24/22

One-way flights to Boston Logan Intl from Seattle

The cheapest one-way flights from Seattle to Boston
Oct 12
SEA

Seattle/Tacoma Intl

BOS

Boston Logan Intl

Nonstop

5h 19m
$109

Delta

View Deal

Deal found 5/24/22

Oct 18
SEA

Seattle/Tacoma Intl

BOS

Boston Logan Intl

1 stop

7h 36m
$117

American Airlines

View Deal

Deal found 5/23/22

Oct 11
SEA

Seattle/Tacoma Intl

BOS

Boston Logan Intl

1 stop

8h 34m
$118

American Airlines

View Deal

Deal found 5/22/22

Related info for your journey

Useful info, stats and facts about Seattle to Boston flights.

What airports do I use to fly from Seattle to Boston?

Booking a flight from Seattle/Tacoma Intl (SEA) to Boston Logan Intl (BOS) is your only option if you wish to fly from Seattle to Boston. On a typical day, there are 18 flights from Seattle/Tacoma Intl to Logan Intl, all of which are around 5h 12m for a nonstop flight. You can also purchase a plane ticket from 11 airlines when you book a flight from Seattle/Tacoma Intl to Boston.

Which airlines flying from Seattle/Tacoma Intl to Boston Logan Intl have flexible cancellations due to COVID-19?

Delta, Alaska Airlines, and JetBlue are some of the carriers that may have flexible cancellation policies. You can use our site to filter for other airlines that may also have this kind of flexibility.

Can I find flights from Seattle to Boston for under $300 on Cheapflights?

Yes, there are multiple flights from Seattle to Boston for under $300. The cheapest flight booked recently is on Delta for just $218, but on average you can expect to pay $239.

Are there nonstop flights from Seattle to Boston for under $300 on Cheapflights?

Cheapflights has at least 20 direct flights from Seattle to Boston under $300. A good price for a nonstop flight from Seattle to Boston is less than $270.

Are there last-minute flights available from Seattle to Boston for under $400?

There are currently 20+ open flights from Seattle to Boston within the next 7 days for less than $400.

What days are nonstop flights available from Seattle to Boston?

Days when nonstop flights are available for this flight are: Sunday, Monday, Wednesday, Thursday, Friday, Saturday.

How popular is this Seattle to Boston flight route?

Within the past month, 26 users have taken a look at flights from Seattle/Tacoma Intl to Boston Logan Intl.

How many flights depart from Seattle to Boston on average per day?

24 flight departures from Seattle to Boston per day on average.
Morning (6am - Noon) - 38% of flight departures
Afternoon (Noon - 6pm) - 50% of flight departures
Evening (6pm - Midnight) - 13% of flight departures

How long is the flight from Seattle to Boston?

Airlines like Delta, American Airlines, and JetBlue fly from Seattle to Boston in about 5h 14m. The time it takes to get you to your destination can typically vary by up to 2h 22m. There are 2502 mi between Seattle and Boston. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

What are the cheapest airlines flying from Seattle to Boston round-trip?

Our cheapest airline available from Seattle to Boston is Delta. Our recent data shows that you can find tickets from as low as $218 on this airline. Additional options worth looking into are American Airlines and JetBlue, starting at $233 and $258 round-trip. Delta is currently priced 25% below the average price you’ll pay for this route.

What are the cheapest airlines to fly from Seattle to Boston one-way?

For one-way options, check prices for Delta. According to our data, you can fly for as low as $109. Users have also found prices from $117 and $149 on American Airlines and JetBlue, respectively.

What are the most popular airlines that fly from Seattle to Boston?

The most popular airlines flying from Seattle to Boston are Major Airline, American Airlines and Alaska Airlines. Something to consider prior to booking your flight.

What are the most reliable airlines from Seattle to Boston?

Before booking your flight to Boston from Seattle, check out the most reliable airlines to get you to your destination on time: Qatar Airways (91%), Alaska Airlines (79%), Virgin Atlantic( 76%).

What are the cheapest flights from Seattle to Boston?

Looking at all options, your cheapest flight can be booked for $18. While the most popular route (Seattle/Tacoma Intl - Boston Logan Intl) can be booked for $218 on average our data indicates $894 when flying from Seattle to Boston.

Alternative routes for Seattle to Boston

See prices for flight routes from nearby airports that may be better suited for you.
Spokane to Bostonfrom $351 pp
Pasco to Bostonfrom $460 pp

Top 5 airlines flying from Seattle to Boston

The chart below displays the airlines Cheapflights users traveling from Seattle to Boston choose most often. Cheapest and average prices are based on aggregated data from the past 12 months.
AirlineCheapestAverageFlexibilityOn-timeCOVID-19 safety
Juneyao AirlinesCheapest$11Average$21FlexibilityNo cancel feeOn-time66%COVID-19 safety
Search Juneyao Airlines flights
Spirit AirlinesCheapest$65Average$203FlexibilityNo cancel feeOn-time65%COVID-19 safety
Search Spirit Airlines flights
FrontierCheapest$111Average$273FlexibilityNo cancel feeOn-time62%COVID-19 safety
Search Frontier flights
Alaska AirlinesCheapest$111Average$317FlexibilityNo cancel feeOn-time75%COVID-19 safety
Search Alaska Airlines flights
United AirlinesCheapest$127Average$298FlexibilityNo cancel feeOn-time69%COVID-19 safety
Search United Airlines flights

Hourly flight availability from Seattle to Boston

See what time of day planes typically take off from Seattle to Boston
1%of flight departuresEarly morningMidnight to 6 am
34%of flight departuresMorning6 am to noon
20%of flight departuresAfternoonNoon to 6 pm
45%of flight departuresEvening6 pm to midnight
Midnight
6 AM
Noon
6 PM

Weekly flight availability from Seattle to Boston

See how many times per day planes take to the skies headed from Seattle to Boston
Sunday11daily flights
Monday21daily flights
Tuesday19daily flights
Wednesday20daily flights
Thursday20daily flights
Friday16daily flights
Saturday19daily flights