$159+ Cheap flights from Massachusetts to Seattle (SEA)
This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 9/29. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — SEA
Oct 2 — Oct 91
Round-trip
1 adult, Economy
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Find cheap flights from Massachusetts to Seattle with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
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Cheapest flights from Massachusetts to SeattleExplore the most affordable flight options available from Massachusetts to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 2, 2026.
Explore the most affordable flight options available from Massachusetts to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 2, 2026.
This flygcity.se deal was found by Cheapflights users on 8/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure flygcity.se is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/267:20 pm -
Nonstop6h 17m
Sat 10/311:42 pm -
Nonstop5h 24m
Deal found 8/30![JetBlue logo]()
$312
This United Airlines deal was found by Cheapflights users on 9/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/221:07 pm -
1 stop9h 08m
Tue 9/2911:14 pm -
1 stop8h 13m
Deal found 9/1![United Airlines logo]()
$317
This lol.travel deal was found by Cheapflights users on 8/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure lol.travel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/197:20 pm -
Nonstop6h 17m
Sat 9/2611:42 pm -
Nonstop5h 24m
Deal found 8/28![JetBlue logo]()
$322
This Cheapflightsfares deal was found by Cheapflights users on 8/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/267:20 pm -
Nonstop6h 17m
Tue 10/1311:55 pm -
Nonstop5h 21m
Deal found 8/28![JetBlue logo]()
$324
This Southwest deal was found by Cheapflights users on 9/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/223:05 pm -
2 stops11h 35m
Tue 9/2911:05 pm -
2 stops10h 10m
Deal found 9/1![Southwest logo]()
$327
This Alaska Airlines deal was found by Cheapflights users on 8/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/276:14 pm -
1 stop29h 12m
Wed 10/2811:00 pm -
Nonstop5h 26m
Deal found 8/28![Alaska Airlines logo]()
$327
This United Airlines deal was found by Cheapflights users on 8/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/247:45 am -
1 stop9h 32m
Sat 10/2411:13 pm -
1 stop7h 04m
Deal found 8/31![United Airlines logo]()
$328
This Traveloka deal was found by Cheapflights users on 8/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Traveloka is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/171:00 pm -
1 stop11h 21m
Sat 10/244:54 pm -
1 stop9h 27m
Deal found 8/29![Multiple Airlines logo]()
$330
This American Airlines deal was found by Cheapflights users on 9/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/257:07 am -
1 stop11h 10m
Mon 9/2810:45 pm -
1 stop8h 38m
Deal found 9/1![American Airlines logo]()
$332
This JetBlue deal was found by Cheapflights users on 8/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/267:20 pm -
Nonstop6h 17m
Wed 9/3011:42 pm -
Nonstop5h 24m
Deal found 8/27![JetBlue logo]()
$333
This Cheapflightsfares deal was found by Cheapflights users on 8/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/247:20 pm -
Nonstop6h 17m
Sat 9/2611:42 pm -
Nonstop5h 24m
Deal found 8/28![JetBlue logo]()
$336
This Southwest deal was found by Cheapflights users on 9/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/2312:15 pm -
2 stops11h 15m
Wed 9/2310:30 pm -
1 stop8h 00m
Deal found 9/1![Southwest logo]()
$337
Best flights from Massachusetts to SeattleDiscover carefully curated flight deals from Massachusetts to Seattle that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 2, 2026.
Discover carefully curated flight deals from Massachusetts to Seattle that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 2, 2026.
This JetBlue deal was found by Cheapflights users on 8/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/227:20 pm -
Nonstop6h 17m
Wed 9/3011:42 pm -
Nonstop5h 24m
Deal found 8/31![JetBlue logo]()
$333
This Southwest deal was found by Cheapflights users on 8/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/65:25 am -
1 stop11h 55m
Tue 10/612:10 am -
2 stops11h 45m
Deal found 8/28![Southwest logo]()
$376
This United Airlines deal was found by Cheapflights users on 8/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/105:03 pm -
1 stop8h 53m
Sat 10/2410:42 am -
2 stops10h 17m
Deal found 8/29![United Airlines logo]()
$380
This Alaska Airlines deal was found by Cheapflights users on 8/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/187:03 am -
1 stop10h 42m
Wed 12/211:40 pm -
Nonstop5h 22m
Deal found 8/29![Alaska Airlines logo]()
$395
This Delta deal was found by Cheapflights users on 8/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/125:13 pm -
1 stop7h 52m
Fri 12/1111:15 pm -
1 stop9h 51m
Deal found 8/27![Delta logo]()
$416
This Southwest deal was found by Cheapflights users on 8/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/264:50 pm -
1 stop10h 50m
Thu 10/298:05 am -
2 stops11h 00m
Deal found 8/28![Southwest logo]()
$382
This United Airlines deal was found by Cheapflights users on 8/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/112:45 pm -
1 stop9h 07m
Thu 10/811:13 pm -
1 stop7h 20m
Deal found 8/29![United Airlines logo]()
$402
This Alaska Airlines deal was found by Cheapflights users on 8/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/139:03 am -
Nonstop6h 24m
Mon 11/165:19 pm -
1 stop9h 27m
Deal found 8/31![Alaska Airlines logo]()
$408
This JetBlue deal was found by Cheapflights users on 9/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/157:20 pm -
Nonstop6h 17m
Wed 9/2311:42 pm -
Nonstop5h 24m
Deal found 9/1![JetBlue logo]()
$410
This Alaska Airlines deal was found by Cheapflights users on 8/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/166:09 pm -
1 stop19h 44m
Sat 11/2111:22 pm -
Nonstop5h 18m
Deal found 8/30![Alaska Airlines logo]()
$408
This Priceline deal was found by Cheapflights users on 9/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/1612:50 pm -
1 stop12h 47m
Sun 9/2011:42 pm -
1 stop10h 08m
Deal found 9/1![Multiple Airlines logo]()
$904
This Southwest deal was found by Cheapflights users on 8/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/31:25 pm -
2 stops11h 15m
Sun 10/116:45 am -
1 stop13h 50m
Deal found 8/28![Southwest logo]()
$411
This United Airlines deal was found by Cheapflights users on 8/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/1410:33 am -
2 stops11h 19m
Sun 10/1811:14 pm -
1 stop7h 23m
Deal found 8/31![United Airlines logo]()
$424
This Delta deal was found by Cheapflights users on 8/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/157:00 am -
1 stop8h 58m
Thu 12/101:36 pm -
1 stop7h 11m
Deal found 8/27![Delta logo]()
$493
This Southwest deal was found by Cheapflights users on 8/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/17:15 pm -
1 stop8h 20m
Mon 10/56:50 pm -
2 stops10h 35m
Deal found 8/28![Southwest logo]()
$412
This Alaska Airlines deal was found by Cheapflights users on 8/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/177:12 am -
Nonstop6h 13m
Tue 9/297:08 am -
1 stop20h 01m
Deal found 8/30![Alaska Airlines logo]()
$420
This United Airlines deal was found by Cheapflights users on 8/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/26:00 am -
1 stop8h 30m
Wed 2/310:54 am -
2 stops9h 55m
Deal found 8/31![United Airlines logo]()
$432
This Southwest deal was found by Cheapflights users on 8/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/62:50 pm -
2 stops12h 05m
Fri 10/912:10 am -
1 stop10h 05m
Deal found 8/31![Southwest logo]()
$414
This United Airlines deal was found by Cheapflights users on 8/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 1/1710:00 am -
2 stops11h 07m
Sat 1/3010:54 am -
2 stops9h 55m
Deal found 8/29![United Airlines logo]()
$447
This Southwest deal was found by Cheapflights users on 9/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/2611:45 am -
2 stops12h 45m
Fri 10/1612:10 am -
2 stops8h 40m
Deal found 9/1![Southwest logo]()
$416
This Southwest deal was found by Cheapflights users on 8/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/212:55 pm -
2 stops14h 40m
Sun 10/116:45 am -
1 stop13h 50m
Deal found 8/28![Southwest logo]()
$416
This United Airlines deal was found by Cheapflights users on 8/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/165:02 pm -
1 stop9h 15m
Thu 11/1910:56 pm -
1 stop8h 47m
Deal found 8/28![United Airlines logo]()
$463
This Southwest deal was found by Cheapflights users on 8/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/55:40 am -
2 stops10h 20m
Mon 2/89:15 am -
2 stops8h 35m
Deal found 8/30![Southwest logo]()
$417
This United Airlines deal was found by Cheapflights users on 8/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/126:00 am -
2 stops16h 08m
Tue 12/158:30 am -
2 stops12h 18m
Deal found 8/27![United Airlines logo]()
$495
This Southwest deal was found by Cheapflights users on 8/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/107:50 am -
2 stops13h 00m
Mon 12/145:40 am -
2 stops11h 40m
Deal found 8/31![Southwest logo]()
$417
This United Airlines deal was found by Cheapflights users on 8/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 1/169:22 am -
1 stop9h 54m
Fri 1/2210:54 am -
2 stops9h 58m
Deal found 8/30![United Airlines logo]()
$534
This Southwest deal was found by Cheapflights users on 8/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/286:05 pm -
1 stop8h 50m
Fri 10/28:05 am -
2 stops10h 40m
Deal found 8/31![Southwest logo]()
$467
This United Airlines deal was found by Cheapflights users on 8/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 1/212:58 pm -
2 stops10h 41m
Tue 1/2610:54 am -
2 stops9h 58m
Deal found 8/30![United Airlines logo]()
$539
This Priceline deal was found by Cheapflights users on 8/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/127:00 am -
2 stops11h 59m
Wed 9/1611:42 pm -
2 stops12h 03m
Deal found 8/28![Multiple Airlines logo]()
$1,107
This Southwest deal was found by Cheapflights users on 8/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/146:05 pm -
1 stop8h 50m
Mon 9/2111:05 pm -
2 stops10h 10m
Deal found 8/31![Southwest logo]()
$472
Last-minute flights from Massachusetts to SeattleDiscover last-minute flight deals from Massachusetts to Seattle. Data last updated September 2, 2026 and is based on user searches.
Discover last-minute flight deals from Massachusetts to Seattle. Data last updated September 2, 2026 and is based on user searches.
This lol.travel deal was found by Cheapflights users on 8/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure lol.travel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/197:20 pm -
Nonstop6h 17m
Sat 9/2611:42 pm -
Nonstop5h 24m
Deal found 8/28![JetBlue logo]()
$322
This United Airlines deal was found by Cheapflights users on 9/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/221:07 pm -
1 stop9h 08m
Tue 9/2911:14 pm -
1 stop8h 13m
Deal found 9/1![United Airlines logo]()
$317
This Southwest deal was found by Cheapflights users on 9/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/223:05 pm -
2 stops11h 35m
Tue 9/2911:05 pm -
2 stops10h 10m
Deal found 9/1![Southwest logo]()
$327
This Southwest deal was found by Cheapflights users on 9/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/2312:15 pm -
2 stops11h 15m
Wed 9/2310:30 pm -
1 stop8h 00m
Deal found 9/1![Southwest logo]()
$337
This Cheapflightsfares deal was found by Cheapflights users on 8/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/247:20 pm -
Nonstop6h 17m
Sat 9/2611:42 pm -
Nonstop5h 24m
Deal found 8/28![JetBlue logo]()
$336
This American Airlines deal was found by Cheapflights users on 9/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/257:07 am -
1 stop11h 10m
Mon 9/2810:45 pm -
1 stop8h 38m
Deal found 9/1![American Airlines logo]()
$332
This flygcity.se deal was found by Cheapflights users on 8/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure flygcity.se is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/267:20 pm -
Nonstop6h 17m
Sat 10/311:42 pm -
Nonstop5h 24m
Deal found 8/30![JetBlue logo]()
$312
This Cheapflightsfares deal was found by Cheapflights users on 8/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/267:20 pm -
Nonstop6h 17m
Tue 10/1311:55 pm -
Nonstop5h 21m
Deal found 8/28![JetBlue logo]()
$324
This JetBlue deal was found by Cheapflights users on 8/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/267:20 pm -
Nonstop6h 17m
Wed 9/3011:42 pm -
Nonstop5h 24m
Deal found 8/27![JetBlue logo]()
$333
This Traveloka deal was found by Cheapflights users on 8/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Traveloka is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/171:00 pm -
1 stop11h 21m
Sat 10/244:54 pm -
1 stop9h 27m
Deal found 8/29![Multiple Airlines logo]()
$330
This United Airlines deal was found by Cheapflights users on 8/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/247:45 am -
1 stop9h 32m
Sat 10/2411:13 pm -
1 stop7h 04m
Deal found 8/31![United Airlines logo]()
$328
This Alaska Airlines deal was found by Cheapflights users on 8/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/276:14 pm -
1 stop29h 12m
Wed 10/2811:00 pm -
Nonstop5h 26m
Deal found 8/28![Alaska Airlines logo]()
$327
One-way flights from Massachusetts to SeattleSearch for one-way flight options from Massachusetts to Seattle. Find affordable one-way fares based on user searches. Data last updated September 2, 2026.
Search for one-way flight options from Massachusetts to Seattle. Find affordable one-way fares based on user searches. Data last updated September 2, 2026.
This United Airlines deal was found by Cheapflights users on 8/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/238:10 am -
1 stop10h 57m
Deal found 8/31![United Airlines logo]()
$159
This Southwest deal was found by Cheapflights users on 9/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/293:05 pm -
2 stops11h 05m
Deal found 9/1![Southwest logo]()
$164
This Super.com deal was found by Cheapflights users on 8/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/187:20 pm -
Nonstop6h 17m
Deal found 8/28![JetBlue logo]()
$174
This Super.com deal was found by Cheapflights users on 9/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/247:20 pm -
Nonstop6h 17m
Deal found 9/1![JetBlue logo]()
$175
This Super.com deal was found by Cheapflights users on 8/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/217:20 pm -
Nonstop6h 17m
Deal found 8/31![JetBlue logo]()
$176
This Southwest deal was found by Cheapflights users on 8/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/2810:35 am -
1 stop12h 15m
Deal found 8/28![Southwest logo]()
$177
This Southwest deal was found by Cheapflights users on 9/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/1412:45 pm -
2 stops12h 55m
Deal found 9/1![Southwest logo]()
$179
This Southwest deal was found by Cheapflights users on 9/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/2412:40 pm -
1 stop8h 40m
Deal found 9/1![Southwest logo]()
$179
This Southwest deal was found by Cheapflights users on 9/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/145:15 am -
2 stops12h 05m
Deal found 9/1![Southwest logo]()
$184
This Super.com deal was found by Cheapflights users on 8/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/231:12 pm -
1 stop11h 08m
Deal found 8/28![JetBlue logo]()
$186
This American Airlines deal was found by Cheapflights users on 8/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/274:29 pm -
1 stop9h 30m
Deal found 8/28![American Airlines logo]()
$188
This American Airlines deal was found by Cheapflights users on 8/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/82:54 pm -
1 stop11h 16m
Deal found 8/28![American Airlines logo]()
$189
Find flight deals from Massachusetts to Seattle
Keep the following information in mind while searching for Massachusetts to Seattle flight deals. Data was last updated September 2, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $312 (flygcity.se) |
One-way from | $159 (United Airlines) |
Popular in | December |
Cheapest in | March |
Average price | $400 |
Good round-trip deal | $408 or less |
Good one-way deal | $255 or less |
Cheapflights Fare Finder
Customize your flight search to find flights from Massachusetts to Seattle that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 7,457,451 searches. Data last updated September 2, 2026.
Use the filters below to find and compare flights from Massachusetts to Seattle that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
Quickest round-trip
BostonSeattle
BOS Boston Logan Intl - SEA Seattle/Tacoma Intl
BOSSEA
Boston Logan Intl
Tue 9/22
7:20 pm-10:37 pm
Nonstop6h 17m
Seattle/Tacoma Intl
Wed 9/30
11:42 pm-8:06 am
Nonstop5h 24m
$333
BostonSeattle
BOS Boston Logan Intl - SEA Seattle/Tacoma Intl
BOSSEA
Boston Logan Intl
Tue 10/6
5:25 am-2:20 pm
1 stop11h 55m
Seattle/Tacoma Intl
Tue 10/6
12:10 am-2:55 pm
2 stops11h 45m
$376
HartfordSeattle
BDL Hartford Bradley Intl - SEA Seattle/Tacoma Intl
BDLSEA
Hartford Bradley Intl
Sat 10/10
5:03 pm-10:56 pm
1 stop8h 53m
Seattle/Tacoma Intl
Sat 10/24
10:42 am-11:59 pm
2 stops10h 17m
$380
BostonSeattle
BOS Boston Logan Intl - SEA Seattle/Tacoma Intl
BOSSEA
Boston Logan Intl
Mon 10/26
4:50 pm-12:40 am
1 stop10h 50m
Seattle/Tacoma Intl
Thu 10/29
8:05 am-10:05 pm
2 stops11h 00m
$382
BostonSeattle
BOS Boston Logan Intl - SEA Seattle/Tacoma Intl
BOSSEA
Boston Logan Intl
Wed 11/18
7:03 am-2:45 pm
1 stop10h 42m
Seattle/Tacoma Intl
Wed 12/2
11:40 pm-8:02 am
Nonstop5h 22m
$395
BostonSeattle
BOS Boston Logan Intl - SEA Seattle/Tacoma Intl
BOSSEA
Boston Logan Intl
Thu 10/1
12:45 pm-6:52 pm
1 stop9h 07m
Seattle/Tacoma Intl
Thu 10/8
11:13 pm-9:33 am
1 stop7h 20m
$402
BostonSeattle
BOS Boston Logan Intl - SEA Seattle/Tacoma Intl
BOSSEA
Boston Logan Intl
Fri 11/13
9:03 am-12:27 pm
Nonstop6h 24m
Seattle/Tacoma Intl
Mon 11/16
5:19 pm-5:46 am
1 stop9h 27m
$408
BostonSeattle
BOS Boston Logan Intl - SEA Seattle/Tacoma Intl
BOSSEA
Boston Logan Intl
Mon 11/16
6:09 pm-10:53 am
1 stop19h 44m
Seattle/Tacoma Intl
Sat 11/21
11:22 pm-7:40 am
Nonstop5h 18m
$408
BostonSeattle
BOS Boston Logan Intl - SEA Seattle/Tacoma Intl
BOSSEA
Boston Logan Intl
Tue 9/15
7:20 pm-10:37 pm
Nonstop6h 17m
Seattle/Tacoma Intl
Wed 9/23
11:42 pm-8:06 am
Nonstop5h 24m
$410
BostonSeattle
BOS Boston Logan Intl - SEA Seattle/Tacoma Intl
BOSSEA
Boston Logan Intl
Sat 10/3
1:25 pm-9:40 pm
2 stops11h 15m
Seattle/Tacoma Intl
Sun 10/11
6:45 am-11:35 pm
1 stop13h 50m
$411
Showing 1-10 of 60 resultsSorted by cheapest first
Best time to book a flight from Massachusetts to Seattle
Have a flexible travel schedule? Discover the best time to fly to Seattle from Massachusetts with our price prediction graph.
ALB-SEA
BOS-SEA
BDL-SEA
MVY-SEA
PVC-SEA
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Cheapflights Insights
Everything you need to know about your flight from Massachusetts to Seattle
USMA-SEA
ALB-SEA
BOS-SEA
BDL-SEA
MVY-SEA
What is the cheapest month to book a flight from Massachusetts to Seattle?
Currently, March is the cheapest month in which you can book a flight from Massachusetts to Seattle (average of $352). Flying from Massachusetts to Seattle in December is currently the most expensive (average of $522). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
What is the cheapest time of day to fly from MA to SEA?
Find hourly flight availability from Massachusetts to Seattle. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated September 2, 2026.
When flying from Massachusetts to Seattle, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.
Weekly flight availability from Massachusetts to Seattle
Explore weekly flight availability from Massachusetts to Seattle. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated September 2, 2026.
The most flights from USMA to SEA are scheduled on a Monday (37 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (6 on average).
How much does it cost to fly round-trip from Massachusetts to Seattle?
Airfare is typical for this route at the moment.
Massachusetts to Seattle flights typically cost between $308 and $489 in September.The cheapest round-trip price found within the last 5 days was $312 on JetBlue (Sep 26-Oct 3).
How far ahead should I book a flight from Massachusetts to Seattle?
Booking 63 days in advance of your planned departure date is, on average, the best time to get cheap flights from Massachusetts to Seattle. The general trend is that the closer you book to the departure date, the more expensive your flight will be.
Related info for your journey
Find useful and relevant information for your journey from Massachusetts to Seattle. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Traveling to a place near Seattle?
Book flights to Seattle if you plan to visit one of these locationsSeaTac
Renton
Tacoma
Lacey
Leavenworth
Olympia
Tukwila
Edmonds
Snoqualmie
Puyallup
Lynnwood
Centralia
Kent
Tumwater
Ellensburg
Issaquah
Marysville
Ocean Shores
Lakewood
Fife
Browse thousands of different options on Cheapflights for your next trip
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Alternative routes for Massachusetts to Seattle
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Complete your trip
Complete your trip to Seattle by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Massachusetts to Seattle by cabin class
Find flights from Massachusetts to Seattle, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Massachusetts and Seattle flights
Browse other Massachusetts and Seattle flight options. Last updated on September 2, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Other flights to Seattle
Explore flights to Seattle departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on September 2, 2026.
Massachusetts to Seattle flights
Consider these flights traveling from Massachusetts to Seattle.
Top 8 airlines flying from Massachusetts to Seattle
Discover the top 8 airlines that operate flights from Massachusetts to Seattle. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 7,457,451 searches. Data last updated September 2, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$118 | Average$278 | FlexibilityNo cancel fee | On-time85% | |
| Cheapest$174 | Average$390 | FlexibilityNo cancel fee | On-time83% | |
| Cheapest$176 | Average$409 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$185 | Average$430 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$235 | Average$447 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$254 | Average$422 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$256 | Average$456 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$298 | Average$438 | FlexibilityNo cancel fee | On-time63% |