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

Find cheap airline tickets from Boston to Seattle by date

  • any
  • May 2018
  • June 2018
  • July 2018
  • August 2018
  • September 2018
  • October 2018
  • November 2018
  • December 2018
  • January 2019
  • February 2019
  • March 2019
  • April 2019
  • any
  • May 2018
  • June 2018
  • July 2018
  • August 2018
  • September 2018
  • October 2018
  • November 2018
  • December 2018
  • January 2019
  • February 2019
  • March 2019
  • April 2019
  • price
  • month of departure
  • month of return
$193
outward: Jun 3, 2018
1:00a BOS » 7:06a SEA
Alaska Airlines direct (6h06m)
inbound: Jun 10, 2018
6:40a SEA » 11:56a BOS
Alaska Airlines direct (5h16m)
$214
outward: Jun 12, 2018
1:05p BOS » 7:26p SEA
Alaska Airlines direct (6h21m)
inbound: Jul 18, 2018
6:35a SEA » 11:52a BOS
Alaska Airlines direct (5h17m)
$218
outward: Jun 6, 2018
12:17a BOS » 4:37p SEA
Spirit Airlines 1 stop (16h20m)
inbound: Jun 13, 2018
3:20a SEA » 5:01p BOS
Spirit Airlines 1 stop (13h41m)
$218
outward: Jun 6, 2018
12:17a BOS » 4:37p SEA
Spirit Airlines 1 stop (16h20m)
inbound: Jun 20, 2018
3:20a SEA » 5:00p BOS
Spirit Airlines 1 stop (13h40m)
$222
outward: May 26, 2018
12:17a BOS » 4:37p SEA
Spirit Airlines 1 stop (16h20m)
inbound: Jun 6, 2018
8:59a SEA » 2:20p BOS
JetBlue direct (5h21m)
$223
outward: Jun 5, 2018
8:29p BOS » 10:11a SEA
Spirit Airlines 1 stop (13h42m)
inbound: Jun 20, 2018
12:15a SEA » 12:17p BOS
Spirit Airlines 1 stop (12h02m)
$230
outward: Jun 5, 2018
12:26p BOS » 6:33p SEA
JetBlue direct (6h07m)
inbound: Jun 20, 2018
3:20a SEA » 5:00p BOS
Spirit Airlines 1 stop (13h40m)
$244
outward: May 28, 2018
12:17a BOS » 4:37p SEA
Spirit Airlines 1 stop (16h20m)
inbound: Jun 3, 2018
8:59a SEA » 2:18p BOS
JetBlue direct (5h19m)
$252
outward: May 28, 2018
3:47a BOS » 9:51a SEA
JetBlue direct (6h04m)
inbound: Jun 3, 2018
8:59a SEA » 2:18p BOS
JetBlue direct (5h19m)
$260
outward: May 28, 2018
12:17a BOS » 4:37p SEA
Spirit Airlines 1 stop (16h20m)
inbound: Jun 3, 2018
12:35a SEA » 5:58a BOS
Alaska Airlines direct (5h23m)
$261
outward: May 26, 2018
12:17a BOS » 4:37p SEA
Spirit Airlines 1 stop (16h20m)
inbound: Jun 6, 2018
6:40a SEA » 11:56a BOS
Alaska Airlines direct (5h16m)
$261
outward: Jun 20, 2018
12:07a BOS » 4:39p SEA
Spirit Airlines 1 stop (16h32m)
inbound: Jun 27, 2018
3:20a SEA » 5:00p BOS
Spirit Airlines 1 stop (13h40m)
$263
outward: Jun 12, 2018
12:00p BOS » 7:45p SEA
Unknown Airline 1 stop (7h45m)
inbound: Jul 18, 2018
6:15a SEA » 11:32a BOS
Unknown Airline direct (5h17m)
$264
outward: Jun 20, 2018
3:47a BOS » 10:04a SEA
JetBlue direct (6h17m)
inbound: Jun 27, 2018
3:20a SEA » 5:00p BOS
Spirit Airlines 1 stop (13h40m)
$267
outward: May 28, 2018
3:47a BOS » 9:51a SEA
JetBlue direct (6h04m)
inbound: Jun 3, 2018
8:59a SEA » 2:18p BOS
JetBlue direct (5h19m)
$271
outward: Jun 12, 2018
5:45p BOS » 1:54a SEA
Sun Country 1 stop (8h09m)
inbound: Jul 17, 2018
9:45p SEA » 4:48p BOS
Sun Country 1 stop (19h03m)
$272
outward: Jun 12, 2018
5:45p BOS » 1:54a SEA
Sun Country 1 stop (8h09m)
inbound: Jul 17, 2018
9:45p SEA » 4:48p BOS
Sun Country 1 stop (19h03m)
$276
outward: Aug 14, 2018
12:07a BOS » 4:39p SEA
Spirit Airlines 1 stop (16h32m)
inbound: Aug 22, 2018
3:20a SEA » 4:58p BOS
Spirit Airlines 1 stop (13h38m)
$278
outward: Aug 14, 2018
12:07a BOS » 4:39p SEA
Spirit Airlines 1 stop (16h32m)
inbound: Aug 23, 2018
3:20a SEA » 4:58p BOS
Spirit Airlines 1 stop (13h38m)
$278
outward: Aug 17, 2018
12:17a BOS » 5:00p SEA
Spirit Airlines 1 stop (16h43m)
inbound: Aug 22, 2018
3:20a SEA » 4:58p BOS
Spirit Airlines 1 stop (13h38m)
$279
outward: Jun 20, 2018
12:07a BOS » 4:39p SEA
Spirit Airlines 1 stop (16h32m)
inbound: Jun 27, 2018
8:59a SEA » 11:37p BOS
Spirit Airlines 1 stop (14h38m)
$279
outward: Aug 14, 2018
12:07a BOS » 4:39p SEA
Spirit Airlines 1 stop (16h32m)
inbound: Aug 23, 2018
3:20a SEA » 4:58p BOS
Spirit Airlines 1 stop (13h38m)
$280
outward: Aug 14, 2018
12:07a BOS » 4:39p SEA
Spirit Airlines 1 stop (16h32m)
inbound: Aug 23, 2018
3:20a SEA » 4:58p BOS
Spirit Airlines 1 stop (13h38m)
$280
outward: Jun 20, 2018
12:07a BOS » 4:39p SEA
Spirit Airlines 1 stop (16h32m)
inbound: Jun 27, 2018
8:59a SEA » 11:37p BOS
Spirit Airlines 1 stop (14h38m)
$280
outward: May 28, 2018
7:26p BOS » 4:37p SEA
Unknown Company 1 stop (21h11m)
inbound: Jun 2, 2018
8:59a SEA » 2:20p BOS
JetBlue direct (5h21m)
$280
outward: Aug 14, 2018
12:07a BOS » 4:39p SEA
Spirit Airlines 1 stop (16h32m)
inbound: Aug 23, 2018
3:20a SEA » 4:58p BOS
Spirit Airlines 1 stop (13h38m)
$280
outward: Jun 13, 2018
12:17a BOS » 4:37p SEA
Spirit Airlines 1 stop (16h20m)
inbound: Jul 18, 2018
3:20a SEA » 5:00p BOS
Spirit Airlines 1 stop (13h40m)
$281
outward: Jun 13, 2018
12:17a BOS » 4:37p SEA
Spirit Airlines 1 stop (16h20m)
inbound: Jul 18, 2018
3:20a SEA » 5:00p BOS
Spirit Airlines 1 stop (13h40m)
$282
outward: Aug 17, 2018
12:17a BOS » 5:00p SEA
Spirit Airlines 1 stop (16h43m)
inbound: Aug 22, 2018
3:20a SEA » 4:58p BOS
Spirit Airlines 1 stop (13h38m)
$285
outward: May 28, 2018
12:17a BOS » 4:37p SEA
Spirit Airlines 1 stop (16h20m)
inbound: Jun 3, 2018
8:59a SEA » 2:18p BOS
JetBlue direct (5h19m)
Return
Departure
Choose when you'd like to depart to Seattle (USA):
Find the cheapest Boston Seattle flight by browsing the dates below to find alternative flight prices found in the last days. To launch a flight search for Boston - Seattle with these new dates, click on an offer. Want to depart from another city? Choose: Las Vegas - Seattle New York - Seattle London - Seattle Miami - Seattle Chicago - Seattle San Francisco - Seattle See more routes

Airlines operating flights from Boston to Seattle

  • any
  • May 2018
  • June 2018
  • July 2018
  • August 2018
  • September 2018
  • October 2018
  • November 2018
  • December 2018
  • January 2019
  • February 2019
  • March 2019
  • April 2019
  • all
  • Alaska Airlines
  • JetBlue
  • Spirit Airlines
  • United Airlines
Spirit Airlines
outbound: Jun 5, 2018
Spirit Airlines 1 stop
return: Jun 12, 2018
Spirit Airlines 1 stop
JetBlue
outbound: Jun 22, 2018
JetBlue 1 stop
return: Jun 26, 2018
Spirit Airlines 1 stop
Alaska Airlines
outbound: Jun 5, 2018
Alaska Airlines direct
return: Jun 12, 2018
Alaska Airlines direct
United Airlines
outbound: Jul 27, 2018
United Airlines 1 stop
return: Aug 1, 2018
United Airlines 1 stop

Travel tips for flights Boston - Seattle

Average flight duration: 5h33m (direct flight)

  • Arrival city:
  • Seattle, USA
  • Airport(s):
  • Kenmore Air Harbor Seaplane Base (LKE)
  • Seattle–Tacoma International Airport (SEA)
  • Local time:
  • May 22, 2018 2:56 AM, GMT-7
  • Weather:
  • min. 56ºF, max. 73ºF
  • Departure city:
  • Boston, USA
  • Airport(s):
  • Logan International Airport (BOS)
  • Manchester–Boston Regional Airport (MHT)
  • Local time:
  • May 22, 2018 5:56 AM, GMT-4