Take off on cheap flights from Seattle to Boston, your adventure starts now!

Find cheap airline tickets from Seattle to Boston by date

  • any
  • September 2018
  • October 2018
  • November 2018
  • December 2018
  • January 2019
  • February 2019
  • March 2019
  • April 2019
  • May 2019
  • June 2019
  • July 2019
  • August 2019
  • any
  • September 2018
  • October 2018
  • November 2018
  • December 2018
  • January 2019
  • February 2019
  • March 2019
  • April 2019
  • May 2019
  • June 2019
  • July 2019
  • August 2019
  • price
  • month of departure
  • month of return
$338
outward: May 22, 2019
6:39p SEA » 12:09a BOS
Delta Air Lines direct (5h30m)
inbound: May 26, 2019
1:20p BOS » 7:48p SEA
Delta Air Lines direct (6h28m)
$340
outward: May 22, 2019
6:39p SEA » 12:09a BOS
Delta Air Lines direct (5h30m)
inbound: May 26, 2019
1:20p BOS » 7:48p SEA
Delta Air Lines direct (6h28m)
$340
outward: May 22, 2019
6:39p SEA » 12:09a BOS
Delta Air Lines direct (5h30m)
inbound: May 26, 2019
1:20p BOS » 7:48p SEA
Delta Air Lines direct (6h28m)
$340
outward: May 22, 2019
6:39p SEA » 12:09a BOS
Delta Air Lines direct (5h30m)
inbound: May 26, 2019
1:20p BOS » 7:48p SEA
Delta Air Lines direct (6h28m)
$340
outward: May 22, 2019
6:39p SEA » 12:09a BOS
Delta Air Lines direct (5h30m)
inbound: May 26, 2019
1:20p BOS » 7:48p SEA
Delta Air Lines direct (6h28m)
$340
outward: May 22, 2019
6:39p SEA » 12:09a BOS
Delta Air Lines direct (5h30m)
inbound: May 26, 2019
1:20p BOS » 7:48p SEA
Delta Air Lines direct (6h28m)
$342
outward: May 22, 2019
6:39p SEA » 12:09a BOS
Delta Air Lines direct (5h30m)
inbound: May 26, 2019
1:20p BOS » 7:48p SEA
Delta Air Lines direct (6h28m)
$394
outward: May 23, 2019
12:30a SEA » 5:56a BOS
Delta Air Lines direct (5h26m)
inbound: May 26, 2019
5:00p BOS » 11:20p SEA
Delta Air Lines direct (6h20m)
$400
outward: May 23, 2019
7:04a SEA » 12:35p BOS
Delta Air Lines direct (5h31m)
inbound: May 26, 2019
1:20p BOS » 7:48p SEA
Delta Air Lines direct (6h28m)
$402
outward: May 22, 2019
6:39p SEA » 12:09a BOS
Delta Air Lines direct (5h30m)
inbound: May 26, 2019
1:20p BOS » 7:48p SEA
Delta Air Lines direct (6h28m)
$434
outward: May 22, 2019
6:39p SEA » 12:09a BOS
Delta Air Lines direct (5h30m)
inbound: May 26, 2019
1:20p BOS » 7:48p SEA
Delta Air Lines direct (6h28m)
Return
Departure
Find the cheapest Seattle Boston flight by browsing the dates below to find alternative flight prices found in the last days. To launch a flight search for Seattle - Boston with these new dates, click on an offer. Want to depart from another city? Choose: Las Vegas - Boston New York - Boston London - Boston Miami - Boston Chicago - Boston San Francisco - Boston See more routes

Airlines operating flights from Seattle to Boston

  • any
  • September 2018
  • October 2018
  • November 2018
  • December 2018
  • January 2019
  • February 2019
  • March 2019
  • April 2019
  • May 2019
  • June 2019
  • July 2019
  • August 2019
  • all
  • Alaska Airlines
  • Delta Air Lines
Delta Air Lines
outbound: May 22, 2019
Delta Air Lines direct
return: May 26, 2019
Delta Air Lines direct
Alaska Airlines
outbound: May 22, 2019
Alaska Airlines 1 stop
return: May 26, 2019
Alaska Airlines 1 stop

Travel tips for flights Seattle - Boston

Average flight duration: 5h56m (direct flight)

  • Arrival city:
  • Boston, USA
  • Airport(s):
  • Logan International Airport (BOS)
  • Manchester–Boston Regional Airport (MHT)
  • Local time:
  • Sep 24, 2018 11:59 AM, GMT-4
  • Weather:
  • min. 52ºF, max. 63ºF
  • Departure city:
  • Seattle, USA
  • Airport(s):
  • Kenmore Air Harbor Seaplane Base (LKE)
  • Seattle–Tacoma International Airport (SEA)
  • Local time:
  • Sep 24, 2018 8:59 AM, GMT-7
  • Weather:
  • min. 51ºF, max. 64ºF