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
SEA
8:15 am
Seattle/Tacoma Intl airport
11h 41m
1 Stop
10:56 pm
BOS
Boston Logan Intl airport
Spirit Airlines
BOS
5:00 am
Boston Logan Intl airport
11h 33m
1 Stop
1:33 pm
SEA
Seattle/Tacoma Intl airport
218 USD
Multiple Airlines
Multiple Airlines
SEA
2:48 pm
Seattle/Tacoma Intl airport
20h 10m
1 Stop
1:58 pm
+1
BOS
Boston Logan Intl airport
Multiple Airlines
BOS
5:00 am
Boston Logan Intl airport
11h 33m
1 Stop
1:33 pm
SEA
Seattle/Tacoma Intl airport
219 USD
Multiple Airlines
Multiple Airlines
SEA
2:48 pm
Seattle/Tacoma Intl airport
20h 10m
1 Stop
1:58 pm
+1
BOS
Boston Logan Intl airport
Multiple Airlines
BOS
5:00 am
Boston Logan Intl airport
11h 33m
1 Stop
1:33 pm
SEA
Seattle/Tacoma Intl airport
219 USD
JetBlue
JetBlue
SEA
4:59 pm
Seattle/Tacoma Intl airport
5h 19m
1:18 am
+1
BOS
Boston Logan Intl airport
JetBlue
BOS
3:30 pm
Boston Logan Intl airport
6h 19m
6:49 pm
SEA
Seattle/Tacoma Intl airport
237 USD
JetBlue
JetBlue
SEA
4:23 am
Seattle/Tacoma Intl airport
5h 31m
12:54 pm
BOS
Boston Logan Intl airport
JetBlue
BOS
3:00 am
Boston Logan Intl airport
6h 13m
6:13 am
SEA
Seattle/Tacoma Intl airport
237 USD
Alaska Airlines
Alaska Airlines
SEA
2:20 pm
Seattle/Tacoma Intl airport
5h 30m
10:50 pm
BOS
Boston Logan Intl airport
Alaska Airlines
BOS
2:30 am
Boston Logan Intl airport
6h 20m
5:50 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 29% more expensive in the Evening than at Noon
CHEAPEST AIRLINE
Frontier
Frontier, Sun Country Air, 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
41 days before
The cheapest time to buy a flight from Seattle to Boston is approximately 41 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 16m
The fastest flight from Seattle to Boston takes 5h 16m.
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

Cost comparison between Seattle and Boston

Compare the costs of everyday items in Seattle and Boston
Food
Inexpensive restaurant
15 USD
Seattle
15 USD
Boston
Fast food
McDonald's meal
8.80 USD
Seattle
8.05 USD
Boston
Soft drink
0.33 liter
1.95 USD
Seattle
1.88 USD
Boston
Coffee
Cappuccino
4.28 USD
Seattle
3.92 USD
Boston
Public transport
One-way ticket
2.77 USD
Seattle
2.52 USD
Boston

Flights from Seattle to:

Flights to Boston from:

  • Seattle
  • Washington
  • United States
  • North America