Cheap Flights from Seattle, WA to Boston, MA from $172
On Cheapflightsplus.com you will find 49 connecting flights from Seattle to Boston. You can compare airfare deals from 5 airlines and multiple travel sites from $172, book and save on cheap plane tickets and last minute offers. Also check out SEA-BOS flight schedule to find best flight time, convenient departure and arrival airports.
Flight Information
Below we will explain in detail what the flights cost on the destination from Seattle to Boston depends on and how to choose the most interesting flight option for you.
Distance between Seattle and Boston is 4005 miles. Time difference between the cities is 3h. Airplanes depart 00:59 to 23:59 from 3 Seattle airports and arrive 00:59 to 23:59 to 4 Boston airports. Average flight time is 14h 20m.
- The fastest flight 7h 2m
- Average flight time 14h 20m
- The earliest flight 00:59
- The latest flight 23:59
- Distance 2489 ml
Best Flights from Seattle to Boston Today
| Price | Departure | Arrival | Flight Duration | Airline | Flight |
|---|---|---|---|---|---|
| from $172 | 23:54 Seattle Seattle-Tacoma Intl | 09:56+1 день Boston Logan | 7h 2m layover 0h 36m - Chicago | United Airlines | UA747 UA2104 |
| from $209 | 17:45 Seattle Seattle-Tacoma Intl | 06:25+1 день Boston Logan | 9h 40m layover 0h 57m - San Diego | Hawaiian Airlines | HA6882 HA4849 |
| from $173 | 06:12 Seattle Seattle-Tacoma Intl | 08:11+2 дня Boston Logan | 46h 59m layover 13h 51m - Denver 23h 30m - Tampa | Frontier Airlines | F93406 F91114 F91216 |
| from $236 | 23:16 Seattle Seattle-Tacoma Intl | 07:43+2 дня Boston Logan | 29h 27m layover 9h 15m - Vancouver 11h 41m - Atlanta | Alaska Airlines | AS2383 WS1596 F93512 |
The cheapest months to travel to Boston are october (from 172 $), may (from 172 $), june (from 172 $).
The most expensive months are july (from 278 $), august (from 173 $), september (from 173 $).
What is the lowest airfare Seattle to Boston?
The cheapest plane ticket found by our users is $172. This airfare is for economy class on one-way UA747 flight by United Airlines for October 24, 2025 which leaves Seattle-Tacoma Intl in Seattle at 23:54 am and arrives at Boston Logan at 09:56.
Flight Schedule Seattle (Washington) to Boston (Massachusetts)
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Popular Airlines on the Route
The flight Seattle — Boston is served by 5 regular airlines and 1 low-cost airline. Most of the flights on this route are operated by Alaska Airlines - 13 departures per week at the price of from $ 216 . And the most expensive tickets are offered by Vanair Limited airline - from $ 1213.
Direct flights
There’re no direct flights on this route. Try flights with stops.
Connecting Flights
There are 49 flights with layovers on the route. The fastest connecting flight is UA747 by United Airlines takes 7h 2m and the cheapest is UA747 by United Airlines for $172.
- AS - Alaska Airlinesfrom $216Find
- F9 - Frontier Airlinesfrom $173Find
- HA - Hawaiian Airlinesfrom $209Find
- UA - United Airlinesfrom $172Find
- X4 - Vanair Limitedfrom $1213Find
Airports
You can fly from Seattle to Boston from 3 airports (Boeing Field International Airport, Seattle-Tacoma Intl, Kenmore Air Harbor SPB).
Seattle airports
- Boeing Field International Airport-BFIfrom $1213Find
- Seattle-Tacoma Intl-SEAfrom $172Find
- Kenmore Air Harbor SPB-LKEFind
Boston airports
- Boston City Heliport-JBCFind
- Boston RT128 Rail-ZRUFind
- Boston South Rail-ZTOFind
- Logan-BOSFind
Airplanes
There are flights to Boston from Seattle by 5 airlines that use 0 aircraft brands. They range from huge modern airplanes to small-sized.
Top Domestic Destinations from Seattle
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Top International Destinations from Seattle
Our state-of-the art metasearch will definitely provide you with the best airfare on international flights. We’re proud to partner with many reliable travel suppliers located outside the US what gives us an opportunity to offer the most competitive prices on far destinations.
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How to book a plane ticket yourself?
- Fill in the search parameters — cities of departure and destination, departure and return dates and click «Find flights»
- Select the best flight that you like. Please, check the airports of departure and arrival. Select the best fare, but pay attention to the following flight details - airports of departure and arrival, flight duration and layovers. Please use filters and sort to find the best flight.
- Click «Buy» when you are ready — our system will redirect you to the site that sells the selected flight ticket.
- Fill in all passenger and payment information — passport and contact information, please double check all passengers’ names and make a payment for your itinerary.
- That's it — you will receive an email with your e-ticket usually within 10 minutes after your flight is confirmed. Please, print the e-ticket and have it with you at the airport. You would need to have only a passport and/or a required form of ID to travel. Please, check your Visa requirements if you travel outside of the United States or Canada.
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