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Cheap flights from Seattle to Boston (SEA - BOS)

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

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

Users have found that flying from Seattle to Boston on a Saturday typically leans towards higher prices. However, this doesn’t mean you still can’t find a deal. Flexibility with other aspects of your flight can still land a great price for your trip.

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

To save on the cost of your flight from Seattle to Boston, book at least 26 days before your planned departure. Booking around this time can save you about 23% on the cost of this flight compared to booking a flight leaving this week. We have found prices from $270 if you need a flight within two weeks. For flights within the next 72 hours, you can find tickets from as low as $316.

Cheap flights from Seattle to Boston in July, August 2020

The best prices found for SEA to BOS flights for July, August
30 Jul - 5 Aug
$158pp
SEA
Seattle/Tacoma Intl
Multiple Airlines
 
1 STOP
BOS
Boston Logan Intl
BOS
Boston Logan Intl
Spirit Airlines
 
1 STOP
SEA
Seattle/Tacoma Intl
22 Jul - 5 Aug
$163pp
SEA
Seattle/Tacoma Intl
Spirit Airlines
   
2 STOPS
BOS
Boston Logan Intl
BOS
Boston Logan Intl
Spirit Airlines
 
1 STOP
SEA
Seattle/Tacoma Intl
30 Jul - 9 Aug
$165pp
SEA
Seattle/Tacoma Intl
Spirit Airlines
 
1 STOP
BOS
Boston Logan Intl
BOS
Boston Logan Intl
Spirit Airlines
 
1 STOP
SEA
Seattle/Tacoma Intl

Seattle to Boston 2020 flight deals

Cheap flights to Boston from Seattle found for this year
20 Oct - 28 Oct
$128pp
SEA
Seattle/Tacoma Intl
Spirit Airlines
 
1 STOP
BOS
Boston Logan Intl
BOS
Boston Logan Intl
Spirit Airlines
 
1 STOP
SEA
Seattle/Tacoma Intl
5 Aug - 12 Aug
$135pp
SEA
Seattle/Tacoma Intl
Spirit Airlines
 
1 STOP
BOS
Boston Logan Intl
BOS
Boston Logan Intl
Spirit Airlines
 
1 STOP
SEA
Seattle/Tacoma Intl
4 Aug - 18 Aug
$136pp
SEA
Seattle/Tacoma Intl
Spirit Airlines
 
1 STOP
BOS
Boston Logan Intl
BOS
Boston Logan Intl
Spirit Airlines
 
1 STOP
SEA
Seattle/Tacoma Intl

Non-stop flights to Boston from Seattle

Save time with Seattle to Boston direct flight deals
15 Jul - 21 Jul
$257pp
SEA
Seattle/Tacoma Intl
Multiple Airlines
Non-Stop
BOS
Boston Logan Intl
BOS
Boston Logan Intl
JetBlue
Non-Stop
SEA
Seattle/Tacoma Intl
8 Aug - 15 Aug
$260pp
SEA
Seattle/Tacoma Intl
Multiple Airlines
Non-Stop
BOS
Boston Logan Intl
BOS
Boston Logan Intl
Alaska Airlines
Non-Stop
SEA
Seattle/Tacoma Intl
15 Jul - 31 Jul
$277pp
SEA
Seattle/Tacoma Intl
JetBlue
Non-Stop
BOS
Boston Logan Intl
BOS
Boston Logan Intl
JetBlue
Non-Stop
SEA
Seattle/Tacoma Intl

Last minute flights from Seattle to Boston

Late deals on round-trip flights to Boston from Seattle, departing today and this week
28 Jun - 11 Aug
$244pp
SEA
Seattle/Tacoma Intl
Multiple Airlines
 
1 STOP
BOS
Boston Logan Intl
BOS
Boston Logan Intl
Spirit Airlines
 
1 STOP
SEA
Seattle/Tacoma Intl
27 Jun - 11 Aug
$263pp
SEA
Seattle/Tacoma Intl
Multiple Airlines
 
1 STOP
BOS
Boston Logan Intl
BOS
Boston Logan Intl
Spirit Airlines
 
1 STOP
SEA
Seattle/Tacoma Intl
28 Jun - 9 Jul
$293pp
SEA
Seattle/Tacoma Intl
Multiple Airlines
 
1 STOP
BOS
Boston Logan Intl
BOS
Boston Logan Intl
Multiple Airlines
 
1 STOP
SEA
Seattle/Tacoma Intl

One-way flights to Boston from Seattle

The cheapest one-way flights from Seattle to Boston
6:15 pm - 4:25 am
Spirit Airlines
1 Stop
7h 10m
SEA - BOS
Spirit Airlines
$55
FlyFar
6:15 pm - 6:42 am
Spirit Airlines
1 Stop
9h 27m
SEA - BOS
Spirit Airlines
$64
Spirit
9:59 pm - 3:25 pm
Spirit Airlines
1 Stop
14h 26m
SEA - BOS
Spirit Airlines
$67
Kiwi.com

Related info for your journey

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

Flight FAQs

From Seattle to Boston

Are flight prices decreasing from Seattle to Boston due to COVID-19 (coronavirus)?

At this time, Cheapflights has noticed price decreases for many domestic flights due to COVID-19. Travel is not necessarily recommended at this time, and flights may be prone to cancellation: please check with local authorities in both Seattle and Boston for travel alerts, and be sure to review the airline's cancellation policy and travel advisories before booking. For more information, please view our post on what to know about COVID-19 (coronavirus) and travel.

Can I find flights from Seattle to Boston for under $200 on Cheapflights?

Yes, there are multiple flights from Seattle to Boston for under $200. The cheapest flight booked recently is on Spirit Airlines for just $128, but on average you can expect to pay $149.

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 $304.

Are there last-minute flights available from Seattle to Boston for under $300?

There are currently 20+ open flights from Seattle to Boston within the next 7 days for less than $300.

What days are nonstop flights available from Seattle to Boston?

You can find nonstop flights on the following days: Monday, Wednesday, Thursday.

How popular is this flight route?

Within the past month, 145 users have taken a look at flights from Seattle to Boston Logan Intl.

What is the cheapest airline for this route?

JetBlue Airways offers the cheapest flights from Seattle to Boston. Per day you can find on average 28 flights for this route and airline.

How long does the flight from Seattle to Boston take?

For nonstop trips expect to fly for about 6 hours. The travel distance is approximately 1,555 miles.

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

Per day, 2 flights depart from Seattle to Boston Logan Intl on average.
Morning (6am - Noon) - 100% of flight departures

Is Seattle weather warmer or cooler than Boston?

We forecast the temperature to be around the 84 °F's in July, on average. The temperature in Boston is generally hotter than in Seattle. Book flights in a timely manner in correlation to your departure date.

Alternative routes for Seattle to Boston

Destination information for Boston

Things to know before you go. Useful info for your trip from Seattle to Boston
Average temperature for July in Boston
84.2 °F
Avg rainfall for July in Boston
3.2 ″

Airports servicing Seattle

Seattle King County/Boeing (BFI)
Seattle Lake Union Spb (LKE)

Airports servicing Boston

Hourly flight availability from Seattle to Boston

Morning 6 AM to noon 56% of SEA to BOS departures
Afternoon Noon to 6 PM 31% of SEA to BOS departures
Evening 6 PM to midnight 12% of SEA to BOS departures
Early morning Midnight to 6 AM 1% of SEA to BOS departures
Midnight
6 AM
Noon
6 PM