Cheap flights from Seattle to Boston

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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?

Wednesday 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.

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

Travellers have found it’s best to book a flight 34 days in advance to save up to 84% compared to booking the same week of travel. As your travel date approaches, the cost of this flight route may potentially increase. While opting to book 34 days out may not be an option for all, there are still additional ways to secure a deal in the near future. You might find a flight from Seattle to Boston 1-2 weeks in advance for as low as C$ 658, or C$ 899 for flights within the next 24 hours.

What is the cheapest month to fly from Seattle to Boston?

February can be a great time to fly to Boston from Seattle with a flight ticket averaging about C$ 355. Cheapflights users have found deals in the month of February for as cheap as C$ 238. The most expensive prices can be found in the month of July.

Cheap flights from Seattle to Boston in July, August 2020

The best prices found for SEA to BOS flights for July, August
30 Jul - 11 Aug
C$ 129pp
SEA
Seattle/Tacoma Intl
Spirit Airlines
 
1 STOP
BOS
Boston Logan Intl
BOS
Boston Logan Intl
Spirit Airlines
 
1 STOP
SEA
Seattle/Tacoma Intl
30 Jul - 8 Aug
C$ 137pp
SEA
Seattle/Tacoma Intl
Spirit Airlines
 
1 STOP
BOS
Boston Logan Intl
BOS
Boston Logan Intl
Spirit Airlines
 
1 STOP
SEA
Seattle/Tacoma Intl
30 Jul - 9 Aug
C$ 147pp
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
4 Aug - 11 Aug
C$ 87pp
SEA
Seattle/Tacoma Intl
Spirit Airlines
   
2 STOPS
BOS
Boston Logan Intl
BOS
Boston Logan Intl
Spirit Airlines
 
1 STOP
SEA
Seattle/Tacoma Intl
4 Aug - 11 Aug
C$ 91pp
SEA
Seattle/Tacoma Intl
Spirit Airlines
   
2 STOPS
BOS
Boston Logan Intl
BOS
Boston Logan Intl
Spirit Airlines
 
1 STOP
SEA
Seattle/Tacoma Intl
4 Aug - 8 Aug
C$ 99pp
SEA
Seattle/Tacoma Intl
Spirit Airlines
   
2 STOPS
BOS
Boston Logan Intl
BOS
Boston Logan Intl
Spirit Airlines
 
1 STOP
SEA
Seattle/Tacoma Intl

Direct flights to Boston from Seattle

Save time with Seattle to Boston direct flight deals
22 Jul - 29 Jul
C$ 251pp
SEA
Seattle/Tacoma Intl
Multiple Airlines
Direct
BOS
Boston Logan Intl
BOS
Boston Logan Intl
Alaska Airlines
Direct
SEA
Seattle/Tacoma Intl
4 Aug - 11 Aug
C$ 257pp
SEA
Seattle/Tacoma Intl
JetBlue
Direct
BOS
Boston Logan Intl
BOS
Boston Logan Intl
JetBlue
Direct
SEA
Seattle/Tacoma Intl
4 Aug - 9 Aug
C$ 277pp
SEA
Seattle/Tacoma Intl
Multiple Airlines
Direct
BOS
Boston Logan Intl
BOS
Boston Logan Intl
Alaska Airlines
Direct
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
3 Jul - 18 Jul
C$ 205pp
SEA
Seattle/Tacoma Intl
Multiple Airlines
   
2 STOPS
BOS
Boston Logan Intl
BOS
Boston Logan Intl
Spirit Airlines
     
3 STOPS
SEA
Seattle/Tacoma Intl
3 Jul - 19 Jul
C$ 224pp
SEA
Seattle/Tacoma Intl
Multiple Airlines
   
2 STOPS
BOS
Boston Logan Intl
BOS
Boston Logan Intl
Spirit Airlines
     
3 STOPS
SEA
Seattle/Tacoma Intl
3 Jul - 21 Jul
C$ 230pp
SEA
Seattle/Tacoma Intl
Multiple Airlines
   
2 STOPS
BOS
Boston Logan Intl
BOS
Boston Logan Intl
Spirit Airlines
     
3 STOPS
SEA
Seattle/Tacoma Intl

One-way flights to Boston from Seattle

The cheapest one-way flights from Seattle to Boston
9:25 a.m. - 7:45 a.m.
Major Airline
1 stop
19h 20m
SEA - BOS
Major Airline
C$ 125
StudentUniverse
4:14 p.m. - 12:13 p.m.
Spirit Airlines
1 stop
16h 59m
SEA - BOS
Spirit Airlines
C$ 134
FlightNetwork
4:14 p.m. - 10:03 a.m.
Multiple Airlines
2 stops
38h 49m
SEA - BOS
Multiple Airlines
C$ 135
Kiwi.com

Related info for your journey

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

Flight FAQs

From Seattle to Boston

Can I find flights from Seattle to Boston for under C$ 100 on Cheapflights?

Yes, there are multiple flights from Seattle to Boston for under C$ 100. The cheapest flight booked recently is on Spirit Airlines for just C$ 87, but on average you can expect to pay C$ 117.

Are there direct flights from Seattle to Boston for under C$ 300 on Cheapflights?

Cheapflights has 20 direct flights from Seattle to Boston under C$ 300. A good price for a direct flight from Seattle to Boston is less than C$ 304.

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

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

How popular is this flight route?

Within the past month, 28 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.

Is Seattle weather warmer or cooler than Boston?

Temperatures around the 29 °C's can be experienced in July. The weather in Boston is hotter than in Seattle. Plan for potential changes in flight availability as peak weather approaches in this location.

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
29.0 °C
Avg rainfall for July in Boston
81.0 mm

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 52% of flight departures
Afternoon Noon to 6 PM 32% of flight departures
Evening 6 PM to midnight 15% of flight departures
Early morning Midnight to 6 AM 1% of flight departures
Midnight
6 AM
Noon
6 PM