Cheap flights from Seattle to Boston (SEA - BOS)

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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 Wednesday or Tuesday 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 2021: 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
Precipitation
3.1 - 4 inches

Popular in

December

High demand for flights, 35% potential price rise

Cheapest in

January

Best time to find cheap flights, 29% potential price drop

Round-trip from

$207

From Seattle/Tacoma Intl to Boston Logan Intl

One-way from

$108

One-way flight from Seattle/Tacoma Intl to Boston Logan Intl

Flight route prices based on searches on Cheapflights within the last 3 days, monthly prices based on aggregated historical data.
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 22% on flights from Seattle to Boston by exploring options for tickets in the afternoon.

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.

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.

Cheap flights from Seattle to Boston in October, November 2021

The best prices found for SEA to BOS flights for October, November
15 Nov - 17 Nov
$174pp
SEA
Seattle/Tacoma Intl
Spirit Airlines
 
1 STOP
BOS
Boston Logan Intl
BOS
Boston Logan Intl
Spirit Airlines
   
2 STOPS
SEA
Seattle/Tacoma Intl
16 Nov - 19 Nov
$181pp
SEA
Seattle/Tacoma Intl
Multiple Airlines
   
2 STOPS
BOS
Boston Logan Intl
BOS
Boston Logan Intl
Delta
Non-Stop
SEA
Seattle/Tacoma Intl
2 Nov - 8 Nov
$182pp
SEA
Seattle/Tacoma Intl
Spirit Airlines
     
3 STOPS
BOS
Boston Logan Intl
BOS
Boston Logan Intl
Spirit Airlines
   
2 STOPS
SEA
Seattle/Tacoma Intl

Seattle/Tacoma Intl to Boston 2021 flight deals

Cheap flights to Boston from Seattle found for this year
7 Dec - 10 Jan
$170pp
SEA
Seattle/Tacoma Intl
Spirit Airlines
   
2 STOPS
BOS
Boston Logan Intl
BOS
Boston Logan Intl
Spirit Airlines
   
2 STOPS
SEA
Seattle/Tacoma Intl
15 Nov - 17 Nov
$174pp
SEA
Seattle/Tacoma Intl
Spirit Airlines
 
1 STOP
BOS
Boston Logan Intl
BOS
Boston Logan Intl
Spirit Airlines
   
2 STOPS
SEA
Seattle/Tacoma Intl
13 Dec - 14 Dec
$176pp
SEA
Seattle/Tacoma Intl
Multiple Airlines
 
1 STOP
BOS
Boston Logan Intl
BOS
Boston Logan Intl
Delta
Non-Stop
SEA
Seattle/Tacoma Intl

Non-stop flights to Boston from Seattle

Save time with Seattle to Boston direct flight deals
10 Dec - 12 Dec
$185pp
SEA
Seattle/Tacoma Intl
Multiple Airlines
Non-Stop
BOS
Boston Logan Intl
BOS
Boston Logan Intl
Delta
Non-Stop
SEA
Seattle/Tacoma Intl
10 Dec - 12 Dec
$187pp
SEA
Seattle/Tacoma Intl
Multiple Airlines
Non-Stop
BOS
Boston Logan Intl
BOS
Boston Logan Intl
Delta
Non-Stop
SEA
Seattle/Tacoma Intl
10 Dec - 12 Dec
$196pp
SEA
Seattle/Tacoma Intl
Multiple Airlines
Non-Stop
BOS
Boston Logan Intl
BOS
Boston Logan Intl
Delta
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
2 Nov - 8 Nov
$182pp
SEA
Seattle/Tacoma Intl
Spirit Airlines
     
3 STOPS
BOS
Boston Logan Intl
BOS
Boston Logan Intl
Spirit Airlines
   
2 STOPS
SEA
Seattle/Tacoma Intl
2 Nov - 8 Nov
$186pp
SEA
Seattle/Tacoma Intl
Spirit Airlines
   
2 STOPS
BOS
Boston Logan Intl
BOS
Boston Logan Intl
Spirit Airlines
   
2 STOPS
SEA
Seattle/Tacoma Intl
3 Nov - 9 Nov
$196pp
SEA
Seattle/Tacoma Intl
Spirit Airlines
     
3 STOPS
BOS
Boston Logan Intl
BOS
Boston Logan Intl
Spirit Airlines
 
1 STOP
SEA
Seattle/Tacoma Intl

One-way flights to Logan Intl from Seattle

The cheapest one-way flights from Seattle to Boston
7:45 pm - 6:23 am
Delta
1 Stop
7h 38m
SEA - BOS
Delta
$108
Delta
6:59 pm - 9:33 am
American Airlines
2 Stops
11h 34m
SEA - BOS
American Airlines
6:20 pm - 5:14 pm
United Airlines
1 Stop
19h 54m
SEA - BOS
United Airlines
$115
United

Related info for your journey

Useful info, stats and facts about <span class="emphasized">Seattle</span> to <span class="emphasized">Boston</span> flights.

Flight FAQs

From Seattle to Boston

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 14 flights from Seattle/Tacoma Intl to Logan Intl, all of which are around 5h 07m for a nonstop flight. You can also purchase a plane ticket from 9 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, JetBlue, and Alaska Airlines 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 $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 $170, but on average you can expect to pay $185.

Are there nonstop flights from Seattle to Boston for under $200 on Cheapflights?

Cheapflights has at least 20 direct flights from Seattle to Boston under $200. A good price for a nonstop flight from Seattle to Boston is less than $239.

Are there last-minute flights available from Seattle to Boston for under $200?

There are currently 20+ open flights from Seattle to Boston within the next 7 days for less than $200.

What days are nonstop flights available from Seattle to Boston?

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

How popular is this Seattle to Boston flight route?

Within the past month, 143 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?

12 flight departures from Seattle to Boston per day on average.
Morning (6am - Noon) - 50% of flight departures
Afternoon (Noon - 6pm) - 8% of flight departures
Evening (6pm - Midnight) - 42% of flight departures

How long is the flight from Seattle to Boston?

Airlines like Spirit Airlines, JetBlue, and Delta fly from Seattle to Boston in about 5h 08m. The time it takes to get you to your destination can typically vary by up to 25h 03m. 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 Spirit Airlines. Our recent data shows that you can find tickets from as low as $170 on this airline. Additional options worth looking into are JetBlue and Delta, starting at $197 and $206 round-trip. Spirit Airlines is currently priced 41% 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 Spirit Airlines. According to our data, you can fly for as low as $60. Users have also found prices from $99 and $108 on Alaska Airlines and Delta, respectively.

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: Delta (92%), Virgin Atlantic (91%), KLM( 90%).

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 cheapest flights from Seattle to Boston?

Looking at all options, your cheapest flight can be booked for $106. While the most popular route (Seattle/Tacoma Intl - Boston Logan Intl) can be booked for $174 on average our data indicates $630 when flying from Seattle to Boston

COVID Restrictions

View COVID Travel Restrictions for Boston, MA

Do I need a COVID test to fly to Boston from Seattle?

Information is based on travel restrictions for travel to Boston Logan Intl within the United States

Most visitors from Seattle/Tacoma Intl need to provide a negative COVID-19 test result and/or quarantine to enter Boston Logan Intl.

COVID-19 testing requirements
Visitors from Seattle/Tacoma Intl must present a negative RT-PCR (NAAT) or Antigen (quick-test) test taken 72 hours before departing to Boston Logan Intl.

Quarantine requirements
Visitors from Seattle/Tacoma Intl are not required to quarantine after entering Boston Logan Intl.

Do I need a test to fly back to Seattle from Boston?

Returning to Seattle/Tacoma Intl from Boston Logan Intl

COVID-19 testing requirements
Visitors from Boston Logan Intl must present a negative RT-PCR (NAAT) or Antigen (quick-test) test taken 72 hours before departing to Seattle/Tacoma Intl.

Quarantine requirements
Visitors from Boston Logan Intl are not required to quarantine after entering Seattle/Tacoma Intl.

Hide COVID Travel Restrictions for Boston, MA

Alternative routes for Seattle to Boston

See prices for flight routes from nearby airports that may be better suited for you.

Destination information for Boston

Things to know before you go - useful duration and weather info for your trip from Seattle to Boston.
Flight duration from SEA to BOS
5h 48m
Average temperature for October in Boston
64.4 °F
Avg rainfall for October in Boston
3.7 ″

Airports servicing Seattle

Airports servicing Boston

Top 8 airlines flying from Seattle/Tacoma Intl to Boston Logan Intl

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.
Airline Cheapest Average Flexibility On-time COVID-19 safety
Spirit Airlines
$92 $247 No cancel fee 65%
Frontier
$111 $273 No cancel fee 62%
Alaska Airlines
$118 $355 No cancel fee 75%
Delta
$118 $357 No cancel fee N/A
United Airlines
$122 $290 No cancel fee 69%
American Airlines
$126 $286 No cancel fee 71%
Sun Country Air
$132 $294 No cancel fee 83%
JetBlue
$138 $396 No cancel fee 62%

Hourly flight availability from Seattle to Boston

See what time of day planes typically take off from Seattle towards Boston.
Evening 6 PM to midnight 55% of SEA to BOS departures
Afternoon Noon to 6 PM 27% of SEA to BOS departures
Morning 6 AM to noon 17% of SEA to BOS departures
Early morning Midnight to 6 AM 1% of SEA to BOS departures
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.
Sunday
15 daily flights
Monday
16 daily flights
Tuesday
13 daily flights
Wednesday
13 daily flights
Thursday
16 daily flights
Friday
17 daily flights
Saturday
14 daily flights
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