Flights from Seattle to Boston

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Seattle to Boston flight comparison made easy

Below you can see the best fares for your route over the next three months. All fares were found on momondo this week. Browse the quickest and cheapest flights from Seattle to Boston by changing tabs
Quickest
Cheapest
Spirit Airlines
Spirit Airlines
28 Aug
SEA
12:25 am
Seattle/Tacoma Intl airport
10h 43m
1 Stop
2:08 pm
BOS
Boston Logan Intl airport
Spirit Airlines
04 Sep
BOS
2:45 am
Boston Logan Intl airport
6h 28m
6:13 am
SEA
Seattle/Tacoma Intl airport
196 USD
Spirit Airlines
Spirit Airlines
04 Sep
SEA
12:25 am
Seattle/Tacoma Intl airport
10h 43m
1 Stop
2:08 pm
BOS
Boston Logan Intl airport
Spirit Airlines
09 Sep
BOS
1:15 pm
Boston Logan Intl airport
6h 38m
4:53 pm
SEA
Seattle/Tacoma Intl airport
196 USD
Spirit Airlines
Spirit Airlines
28 Aug
SEA
12:25 am
Seattle/Tacoma Intl airport
10h 43m
1 Stop
2:08 pm
BOS
Boston Logan Intl airport
Spirit Airlines
03 Sep
BOS
2:00 am
Boston Logan Intl airport
9h 12m
1 Stop
8:12 am
SEA
Seattle/Tacoma Intl airport
199 USD
JetBlue
JetBlue
26 Sep
SEA
4:59 pm
Seattle/Tacoma Intl airport
5h 11m
1:10 am
+1
BOS
Boston Logan Intl airport
JetBlue
29 Sep
BOS
3:00 am
Boston Logan Intl airport
6h 11m
6:11 am
SEA
Seattle/Tacoma Intl airport
237 USD
Delta
Delta
09 Sep
SEA
8:25 am
Seattle/Tacoma Intl airport
5h 10m
4:35 pm
BOS
Boston Logan Intl airport
Delta
14 Sep
BOS
7:10 am
Boston Logan Intl airport
6h 24m
10:34 am
SEA
Seattle/Tacoma Intl airport
237 USD
Delta
Delta
20 Sep
SEA
8:25 am
Seattle/Tacoma Intl airport
5h 10m
4:35 pm
BOS
Boston Logan Intl airport
Delta
28 Sep
BOS
2:45 am
Boston Logan Intl airport
6h 25m
6:10 am
SEA
Seattle/Tacoma Intl airport
237 USD

How to get the cheapest flight from Seattle to Boston

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight for your trip
CHEAPEST MONTH TO FLY
February
The cheapest time of year to fly to Boston from Seattle is February. Most expensive is July
CHEAPEST DAY TO FLY
Wednesday
The cheapest day of the week is typically Wednesday. The most expensive is typically Sunday
CHEAPEST TIME TO FLY
at noon
Seattle to Boston flights are approximately 132% more expensive in the evening than at noon
CHEAPEST AIRLINE
Frontier
Frontier, Major Airline, and Spirit Airlines are the most popular carriers operating from Seattle to Boston
CHEAPEST ROUTE
Seattle/Tacoma Intl - Boston Logan Intl
Fly from Seattle/Tacoma Intl to Boston Logan Intl for the best Seattle - Boston flight prices
SEA
Seattle/Tacoma Intl
BOS
Boston Logan Intl
CHEAPEST TIME TO BOOK
48 days before
The cheapest time to buy a flight from Seattle to Boston is approximately 48 days to departure
60
Days before departure
0

Flight information for Seattle to Boston

Find info about flight duration, direct flights, and airports for your flight from Seattle to Boston
Fastest flight time
5h 17m
The fastest flight from Seattle to Boston takes 5h 17m.
Direct flights
Every day
Direct flights go from Seattle to Boston every day.
Airports in Boston
1 airport
There is 1 airport near Boston: Boston Logan Intl (BOS)

Alternative routes for Seattle to Boston

Compare alternative flights to and from nearby airports and cities to discover the best prices and most convenient flight times
Portland to Boston
Fastest flight time
5h 15m
Cheapest price
254 USD

Flights from Seattle to:

Flights to Boston from:

  • Seattle
  • Washington
  • United States
  • North America