Cheap flights from Seattle to Boston (SEA - BOS) from $119

This is the cheapest one-way flight price, found on 6/7. Prices may vary by date and flight preferences.
SEA — BOS
Jun 13 — Jun 201
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The best prices from Seattle/Tacoma Intl to Boston Logan Intl are usually found in January or February, booked 23 days in advance, depart on a Wednesday or Monday and return on a Wednesday

How to find the cheapest flight from Seattle (SEA) to Boston (BOS)

All the information you need to plan the best SEA to BOS flight in 2023: compare Seattle to Boston flight prices with the expected peak season, weather and rainfall in Boston.

Popular in

June

Cheapest in

January

Round-trip from

$197

One-way from

$134
High demand for flights, 36% potential price rise
Best time to find cheap flights, 46% potential price drop
From Seattle/Tacoma Intl to Boston Logan Intl
One-way flight from Seattle/Tacoma Intl to Boston Logan Intl

SEA - BOS

Price

$197 - $407

BOS

Temperature

30.2 - 73.4 °F

BOS

Rainfall

3.1 - 4 inches

Cheap flights from Seattle to Boston in June, July 2023

The best prices found for SEA to BOS flights for June, July
These are some of the best deals we've found on flights to Boston in 2023 at this time. If these deals don't appeal to you, be sure to come back soon for more options.

Seattle to Boston 2023 flight deals

Cheap flights to Boston from Seattle found for this year
These are some of the best deals we've found on flights to Boston in 2023 at this time. If these deals don't appeal to you, be sure to come back soon for more options.

Cheap JetBlue flights from Seattle to Boston

Find some of the cheapest JetBlue flights traveling from Seattle to Boston. Make sure to double check the flight details before booking.
  • JetBlue is one of the most popular airlines used for those traveling from Seattle to Boston. Flights from JetBlue traveling this route typically cost $378.61 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 $124. 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 8% more popular than any other airline flying that same route.

Cheap Alaska Airlines flights from Seattle to Boston

To aid your search, here are some of the cheapest Alaska Airlines flights we've found from Seattle to Boston. Ensure the flight price, dates, time, and airline match your criteria before you book.
  • Alaska Airlines is one of the most popular airlines used for those traveling from Seattle to Boston. Flights on this route from Alaska Airlines typically cost $437.25 RT, a price that is 62% cheaper than the average Seattle to Boston flight. The cheapest flight found was $149 RT. Seattle/Tacoma Intl Airport is the most common Seattle airport to take off from when flying to Boston. Boston Logan Intl Airport is the most popular arrival airport in Boston. When flying from Seattle to Boston, Alaska Airlines flights are 7% 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
If you're seeking options on non-stop flights from Seattle to Boston, check out these fares. Users seeking other options on flights from Seattle to Boston should update the search form at the top of the page.

Last minute flights from Seattle to Boston

Late deals on return flights to Boston from Seattle, departing today and this week
Users seeking a last-minute flight from Seattle to Boston should consider booking one of these fares. Users should double check the flight they book to ensure it matches the day, time, and destination they're looking for.

One-way flights to Boston from Seattle

The cheapest one-way flights from Seattle to Boston
Take a look at some of the one-way flights we've detected from Seattle to Boston. Those seeking round-trip flights from Seattle to Boston should utilize the search form at the the top of the page.

Find flights from Seattle to Boston within your budget

Use the slider to find flights from Seattle to Boston that fit your budget.

Fly from

Any airport

Fly to

Any airport

Budget

$238 - $272

Route

Depart

Return

Price

Seattle/Tacoma IntlBoston Logan Intl

SEA - BOS

SEABOS

Seattle/Tacoma Intl

Tue 9/19

Nonstop5h 19m

Boston Logan Intl

Tue 10/3

Nonstop6h 24m

Seattle/Tacoma IntlBoston Logan Intl

SEA - BOS

SEABOS

Seattle/Tacoma Intl

Wed 8/23

1 stop9h 06m

Boston Logan Intl

Tue 8/29

1 stop12h 41m

Seattle/Tacoma IntlBoston Logan Intl

SEA - BOS

SEABOS

Seattle/Tacoma Intl

Thu 9/21

Nonstop5h 19m

Boston Logan Intl

Tue 10/3

Nonstop6h 24m

Seattle/Tacoma IntlBoston Logan Intl

SEA - BOS

SEABOS

Seattle/Tacoma Intl

Tue 9/12

1 stop15h 23m

Boston Logan Intl

Tue 9/19

Nonstop6h 20m

Seattle/Tacoma IntlBoston Logan Intl

SEA - BOS

SEABOS

Seattle/Tacoma Intl

Sat 9/23

1 stop8h 20m

Boston Logan Intl

Mon 10/2

1 stop9h 20m

Seattle/Tacoma IntlBoston Logan Intl

SEA - BOS

SEABOS

Seattle/Tacoma Intl

Thu 9/7

1 stop8h 20m

Boston Logan Intl

Wed 9/13

1 stop9h 28m

Seattle/Tacoma IntlBoston Logan Intl

SEA - BOS

SEABOS

Seattle/Tacoma Intl

Tue 8/29

1 stop7h 38m

Boston Logan Intl

Thu 9/7

1 stop10h 38m

Seattle/Tacoma IntlBoston Logan Intl

SEA - BOS

SEABOS

Seattle/Tacoma Intl

Thu 11/9

Nonstop5h 15m

Boston Logan Intl

Tue 11/14

Nonstop6h 12m

Seattle/Tacoma IntlBoston Logan Intl

SEA - BOS

SEABOS

Seattle/Tacoma Intl

Tue 9/12

Nonstop5h 15m

Boston Logan Intl

Tue 9/19

Nonstop6h 20m

Flights are sorted by cheapest first

Deals found on 6/7

Reviews of airlines servicing Boston

Read reviews from past customers who have flown JetBlue, Alaska Airlines and Spirit Airlines from Seattle to Boston. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
1,376 reviews

Boarding

8.3

Crew

8.6

Comfort

8.0

Overall

8.0

Entertainment

7.1

Food

7.2

Reviews

1 / 10

No food other than two small snacks served and no in flight entertainment. Other than that great!

Alaska Airlines
8.0
Very good
1,376 reviews
Alaska Airlines
8.0
Very good
1,376 reviews

Boarding

8.3

Crew

8.6

Comfort

8.0

Overall

8.0

Entertainment

7.1

Food

7.2

Reviews

1 / 10

No food other than two small snacks served and no in flight entertainment. Other than that great!

Delta
8.0
Very good
2,406 reviews
Alaska Airlines
8.0
Very good
1,376 reviews

Boarding

8.3

Crew

8.6

Comfort

8.0

Overall

8.0

Entertainment

7.1

Food

7.2

Reviews

1 / 10

No food other than two small snacks served and no in flight entertainment. Other than that great!

United Airlines
7.6
Good
1,569 reviews
Alaska Airlines
8.0
Very good
1,376 reviews

Boarding

8.3

Crew

8.6

Comfort

8.0

Overall

8.0

Entertainment

7.1

Food

7.2

Reviews

1 / 10

No food other than two small snacks served and no in flight entertainment. Other than that great!

JetBlue
7.5
Good
623 reviews
Alaska Airlines
8.0
Very good
1,376 reviews

Boarding

8.3

Crew

8.6

Comfort

8.0

Overall

8.0

Entertainment

7.1

Food

7.2

Reviews

1 / 10

No food other than two small snacks served and no in flight entertainment. Other than that great!

Sun Country Air
7.4
Good
84 reviews
Alaska Airlines
8.0
Very good
1,376 reviews

Boarding

8.3

Crew

8.6

Comfort

8.0

Overall

8.0

Entertainment

7.1

Food

7.2

Reviews

1 / 10

No food other than two small snacks served and no in flight entertainment. Other than that great!

Related info for your journey

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

Top 7 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
United AirlinesCheapest$123Average$306FlexibilityNo cancel feeOn-time69%COVID-19 safety
Search United Airlines flights
Alaska AirlinesCheapest$124Average$379FlexibilityNo cancel feeOn-time75%COVID-19 safety
Search Alaska Airlines flights
JetBlueCheapest$134Average$393FlexibilityNo cancel feeOn-time62%COVID-19 safety
Search JetBlue flights
Sun Country AirCheapest$147Average$311FlexibilityNo cancel feeOn-time83%COVID-19 safety
Search Sun Country Air flights
DeltaCheapest$149Average$437FlexibilityNo cancel feeOn-timeN/ACOVID-19 safety
Search Delta flights
American AirlinesCheapest$159Average$449FlexibilityNo cancel feeOn-time71%COVID-19 safety
Search American Airlines flights
Spirit AirlinesCheapest$161Average$307FlexibilityNo cancel feeOn-time65%COVID-19 safety
Search Spirit Airlines flights

Hourly flight availability from Seattle to Boston

See what time of day planes typically take off from Seattle to Boston
3%of flight departuresEarly morningMidnight to 6 am
25%of flight departuresMorning6 am to noon
46%of flight departuresAfternoonNoon to 6 pm
26%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
Sunday21daily flights
Monday23daily flights
Tuesday23daily flights
Wednesday22daily flights
Thursday24daily flights
Friday22daily flights
Saturday20daily flights