$131+ 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 5/4. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — SEA
may. 4 — may. 111
Round-trip
1 adult, Economy
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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 abril 4, 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 abril 4, 2026.
This United Airlines deal was found by Cheapflights users on 3/31. 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.
vie. 4/246:48 pm
BOS
- SEA
1 stop8h 46m
United Airlines
mar. 5/51:07 pm
SEA
- BOS
1 stop7h 52m
United Airlines
Deal found 3/31![United Airlines logo]()
$232
This American Airlines deal was found by Cheapflights users on 3/31. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 4/293:16 pm
BOS
- SEA
1 stop10h 22m
American Airlines
mar. 5/512:59 am
SEA
- BOS
1 stop9h 12m
American Airlines
Deal found 3/31![American Airlines logo]()
$236
This Delta deal was found by Cheapflights users on 3/31. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 4/287:37 am
BOS
- SEA
Nonstop6h 18m
Delta
mar. 5/57:15 am
SEA
- BOS
Nonstop5h 27m
Delta
Deal found 3/31![Delta logo]()
$237
This Delta deal was found by Cheapflights users on 4/1. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 5/27:37 am
BOS
- SEA
Nonstop6h 18m
Delta
sáb. 5/911:00 pm
SEA
- BOS
Nonstop5h 35m
Delta
Deal found 4/1![Delta logo]()
$238
This Southwest deal was found by Cheapflights users on 3/31. 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.
sáb. 5/21:50 pm
BOS
- SEA
2 stops12h 10m
Southwest
mié. 5/61:25 pm
SEA
- BOS
1 stop7h 40m
Southwest
Deal found 3/31![Southwest logo]()
$242
This American Airlines deal was found by Cheapflights users on 3/31. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 5/164:21 pm
BOS
- SEA
1 stop9h 37m
American Airlines
mié. 5/2710:35 pm
SEA
- BOS
1 stop7h 06m
American Airlines
Deal found 3/31![American Airlines logo]()
$244
This Cheapflightsfares deal was found by Cheapflights users on 4/1. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 6/47:00 am
BOS
- SEA
Nonstop6h 17m
JetBlue
mar. 6/911:35 am
SEA
- BOS
Nonstop5h 37m
JetBlue
Deal found 4/1![JetBlue logo]()
$246
This Southwest deal was found by Cheapflights users on 3/31. 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.
jue. 4/233:45 pm
BOS
- SEA
1 stop11h 20m
Southwest
lun. 5/46:15 pm
SEA
- BOS
2 stops11h 00m
Southwest
Deal found 3/31![Southwest logo]()
$248
This Delta deal was found by Cheapflights users on 3/31. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 4/307:37 am
BOS
- SEA
Nonstop6h 18m
Delta
sáb. 5/911:00 pm
SEA
- BOS
Nonstop5h 35m
Delta
Deal found 3/31![Delta logo]()
$251
This Delta deal was found by Cheapflights users on 3/31. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 4/225:30 pm
BOS
- SEA
1 stop9h 23m
Delta
mar. 4/287:35 pm
SEA
- BOS
1 stop7h 25m
Delta
Deal found 3/31![Delta logo]()
$257
This Southwest deal was found by Cheapflights users on 4/2. 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.
mar. 5/56:40 pm
ALB
- SEA
1 stop8h 30m
Southwest
mié. 5/136:00 am
SEA
- ALB
1 stop6h 40m
Southwest
Deal found 4/2![Southwest logo]()
$375
This Southwest deal was found by Cheapflights users on 4/3. 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.
vie. 5/17:20 pm
BDL
- SEA
1 stop7h 45m
Southwest
lun. 5/1111:55 pm
SEA
- BDL
1 stop7h 45m
Southwest
Deal found 4/3![Southwest logo]()
$383
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 abril 4, 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 abril 4, 2026.
This Delta deal was found by Cheapflights users on 3/31. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 5/127:30 pm
BOS
- SEA
Nonstop6h 10m
Delta
vie. 5/294:10 pm
SEA
- BOS
Nonstop5h 30m
Delta
Deal found 3/31![Delta logo]()
$251
This United Airlines deal was found by Cheapflights users on 3/29. 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.
mar. 4/285:25 pm
BOS
- SEA
1 stop9h 21m
United Airlines
dom. 5/310:41 pm
SEA
- BOS
1 stop8h 37m
United Airlines
Deal found 3/29![United Airlines logo]()
$352
This Southwest deal was found by Cheapflights users on 4/2. 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.
jue. 7/95:30 pm
BOS
- SEA
1 stop8h 35m
Southwest
mar. 7/145:00 am
SEA
- BOS
1 stop10h 00m
Southwest
Deal found 4/2![Southwest logo]()
$357
This Alaska Airlines deal was found by Cheapflights users on 4/3. 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.
sáb. 4/256:42 pm
BOS
- SEA
Nonstop6h 17m
Alaska Airlines
jue. 5/710:45 pm
SEA
- BOS
Nonstop5h 27m
Alaska Airlines
Deal found 4/3![Alaska Airlines logo]()
$377
This American Airlines deal was found by Cheapflights users on 4/3. 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.
jue. 8/273:21 pm
MVY
- SEA
1 stop10h 37m
American Airlines
dom. 8/3010:35 pm
SEA
- MVY
1 stop10h 21m
American Airlines
Deal found 4/3![American Airlines logo]()
$463
This Delta deal was found by Cheapflights users on 3/30. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 4/287:37 am
BOS
- SEA
Nonstop6h 18m
Delta
dom. 5/310:35 pm
SEA
- BOS
Nonstop5h 20m
Delta
Deal found 3/30![Delta logo]()
$332
This Delta deal was found by Cheapflights users on 4/3. 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.
jue. 4/307:37 am
BOS
- SEA
Nonstop6h 18m
Delta
mar. 5/510:35 pm
SEA
- BOS
Nonstop5h 20m
Delta
Deal found 4/3![Delta logo]()
$332
This Southwest deal was found by Cheapflights users on 3/30. 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.
mié. 4/292:45 pm
ALB
- SEA
2 stops10h 45m
Southwest
mié. 5/66:00 am
SEA
- ALB
1 stop6h 40m
Southwest
Deal found 3/30![Southwest logo]()
$380
This Alaska Airlines deal was found by Cheapflights users on 3/30. 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.
dom. 9/137:40 am
BOS
- SEA
1 stop10h 07m
Alaska Airlines
mié. 9/166:48 pm
SEA
- BOS
1 stop8h 21m
Alaska Airlines
Deal found 3/30![Alaska Airlines logo]()
$387
This Southwest deal was found by Cheapflights users on 4/1. 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.
mié. 6/36:40 pm
ALB
- SEA
1 stop8h 30m
Southwest
lun. 6/811:05 pm
SEA
- ALB
1 stop8h 40m
Southwest
Deal found 4/1![Southwest logo]()
$387
This Delta deal was found by Cheapflights users on 4/1. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 9/26:35 pm
BOS
- SEA
Nonstop6h 30m
Delta
lun. 9/710:00 pm
SEA
- BOS
Nonstop5h 35m
Delta
Deal found 4/1![Delta logo]()
$357
This Southwest deal was found by Cheapflights users on 4/3. 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.
vie. 5/17:20 pm
BDL
- SEA
1 stop7h 45m
Southwest
lun. 5/1111:55 pm
SEA
- BDL
2 stops9h 15m
Southwest
Deal found 4/3![Southwest logo]()
$388
This Delta deal was found by Cheapflights users on 3/31. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 4/306:45 pm
BOS
- SEA
Nonstop6h 20m
Delta
lun. 5/43:40 pm
SEA
- BOS
Nonstop5h 19m
Delta
Deal found 3/31![Delta logo]()
$367
This United Airlines deal was found by Cheapflights users on 3/30. 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.
mar. 5/56:00 am
ALB
- SEA
1 stop8h 39m
United Airlines
mié. 5/67:05 pm
SEA
- ALB
2 stops12h 08m
United Airlines
Deal found 3/30![United Airlines logo]()
$490
This Expedia deal was found by Cheapflights users on 3/31. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 4/157:09 am
MVY
- SEA
1 stop8h 16m
Multiple Airlines
dom. 4/1910:15 pm
SEA
- MVY
1 stop7h 59m
Multiple Airlines
Deal found 3/31![Multiple Airlines logo]()
$988
This Southwest deal was found by Cheapflights users on 4/3. 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.
lun. 8/35:35 am
BOS
- SEA
1 stop11h 20m
Southwest
lun. 8/105:50 pm
SEA
- BOS
1 stop9h 10m
Southwest
Deal found 4/3![Southwest logo]()
$392
This KAYAK deal was found by Cheapflights users on 4/3. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 6/172:20 pm
PVC
- SEA
1 stop11h 29m
JetBlue
dom. 6/2111:44 pm
SEA
- PVC
1 stop8h 31m
JetBlue
Deal found 4/3![JetBlue logo]()
$1,083
This Delta deal was found by Cheapflights users on 4/1. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 5/297:30 pm
BOS
- SEA
Nonstop6h 10m
Delta
vie. 6/54:10 pm
SEA
- BOS
Nonstop5h 30m
Delta
Deal found 4/1![Delta logo]()
$371
This United Airlines deal was found by Cheapflights users on 4/3. 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.
jue. 5/2812:12 pm
BDL
- SEA
2 stops13h 58m
United Airlines
lun. 6/110:40 pm
SEA
- BDL
1 stop8h 16m
United Airlines
Deal found 4/3![United Airlines logo]()
$498
This Southwest deal was found by Cheapflights users on 4/2. 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.
jue. 8/205:50 am
BOS
- SEA
2 stops11h 05m
Southwest
dom. 8/305:25 pm
SEA
- BOS
1 stop9h 35m
Southwest
Deal found 4/2![Southwest logo]()
$417
This Alaska Airlines deal was found by Cheapflights users on 4/3. 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.
vie. 9/113:00 pm
ALB
- SEA
2 stops20h 11m
Alaska Airlines
mar. 9/226:50 am
SEA
- ALB
2 stops13h 44m
Alaska Airlines
Deal found 4/3![Alaska Airlines logo]()
$565
This United Airlines deal was found by Cheapflights users on 4/2. 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.
jue. 5/2812:24 pm
ALB
- SEA
2 stops13h 46m
United Airlines
lun. 6/110:40 pm
SEA
- ALB
1 stop9h 03m
United Airlines
Deal found 4/2![United Airlines logo]()
$514
This United Airlines deal was found by Cheapflights users on 4/2. 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.
mar. 8/2510:00 am
ALB
- SEA
2 stops13h 43m
United Airlines
lun. 8/3110:47 pm
SEA
- ALB
1 stop7h 52m
United Airlines
Deal found 4/2![United Airlines logo]()
$531
This Southwest deal was found by Cheapflights users on 3/30. 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.
mar. 5/57:50 am
BDL
- SEA
2 stops12h 05m
Southwest
mié. 5/136:00 am
SEA
- BDL
2 stops10h 00m
Southwest
Deal found 3/30![Southwest logo]()
$447
This United Airlines deal was found by Cheapflights users on 4/3. 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.
mar. 4/2812:11 pm
BDL
- SEA
1 stop9h 49m
United Airlines
mié. 4/2911:59 pm
SEA
- BDL
1 stop6h 56m
United Airlines
Deal found 4/3![United Airlines logo]()
$547
This Southwest deal was found by Cheapflights users on 4/1. 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.
mar. 7/1412:55 pm
ALB
- SEA
1 stop10h 15m
Southwest
mar. 7/219:25 pm
SEA
- ALB
1 stop7h 40m
Southwest
Deal found 4/1![Southwest logo]()
$457
This Delta deal was found by Cheapflights users on 4/2. 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.
mié. 5/65:17 pm
BDL
- SEA
1 stop7h 32m
Delta
dom. 5/105:30 am
SEA
- BDL
1 stop7h 40m
Delta
Deal found 4/2![Delta logo]()
$517
This United Airlines deal was found by Cheapflights users on 3/30. 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.
mar. 5/510:33 am
BDL
- SEA
2 stops11h 27m
United Airlines
mié. 5/68:10 am
SEA
- BDL
1 stop7h 32m
United Airlines
Deal found 3/30![United Airlines logo]()
$552
This Southwest deal was found by Cheapflights users on 4/2. 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.
jue. 5/72:05 pm
BDL
- SEA
2 stops12h 25m
Southwest
mar. 5/127:10 pm
SEA
- BDL
2 stops10h 00m
Southwest
Deal found 4/2![Southwest logo]()
$461
This Delta deal was found by Cheapflights users on 3/30. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 6/2012:34 pm
ALB
- SEA
1 stop9h 11m
Delta
sáb. 7/45:30 am
SEA
- ALB
1 stop7h 54m
Delta
Deal found 3/30![Delta logo]()
$536
Last-minute flights from Massachusetts to SeattleDiscover last-minute flight deals from Massachusetts to Seattle. Data last updated abril 4, 2026 and is based on user searches.
Discover last-minute flight deals from Massachusetts to Seattle. Data last updated abril 4, 2026 and is based on user searches.
This American Airlines deal was found by Cheapflights users on 4/1. 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.
vie. 4/108:03 am
BOS
- SEA
1 stop9h 24m
American Airlines
mar. 4/2811:33 pm
SEA
- BOS
1 stop8h 59m
American Airlines
Deal found 4/1![American Airlines logo]()
$382
This United Airlines deal was found by Cheapflights users on 3/30. 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.
lun. 4/135:25 pm
BOS
- SEA
1 stop9h 21m
United Airlines
lun. 5/411:53 pm
SEA
- BOS
1 stop8h 08m
United Airlines
Deal found 3/30![United Airlines logo]()
$390
This Kiwi.com deal was found by Cheapflights users on 3/31. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 4/203:50 pm
BDL
- SEA
2 stops20h 37m
Multiple Airlines
lun. 4/2710:11 pm
SEA
- BDL
1 stop18h 48m
Multiple Airlines
Deal found 3/31![Multiple Airlines logo]()
$385
This Kiwi.com deal was found by Cheapflights users on 3/31. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 4/219:10 am
BDL
- SEA
2 stops27h 17m
Multiple Airlines
lun. 4/2710:11 pm
SEA
- BDL
1 stop18h 48m
Multiple Airlines
Deal found 3/31![Multiple Airlines logo]()
$394
This Southwest deal was found by Cheapflights users on 3/31. 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.
jue. 4/237:25 pm
ALB
- SEA
1 stop7h 40m
Southwest
mié. 4/296:00 am
SEA
- ALB
1 stop6h 40m
Southwest
Deal found 3/31![Southwest logo]()
$387
This Southwest deal was found by Cheapflights users on 3/31. 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.
mar. 4/282:45 pm
ALB
- SEA
2 stops10h 45m
Southwest
mié. 4/296:00 am
SEA
- ALB
2 stops9h 45m
Southwest
Deal found 3/31![Southwest logo]()
$385
This Southwest deal was found by Cheapflights users on 4/3. 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.
jue. 4/307:20 pm
BDL
- SEA
1 stop7h 45m
Southwest
mié. 5/67:10 pm
SEA
- BDL
2 stops10h 00m
Southwest
Deal found 4/3![Southwest logo]()
$388
This Southwest deal was found by Cheapflights users on 4/3. 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.
vie. 5/17:20 pm
BDL
- SEA
1 stop7h 45m
Southwest
lun. 5/1111:55 pm
SEA
- BDL
1 stop7h 45m
Southwest
Deal found 4/3![Southwest logo]()
$383
This Southwest deal was found by Cheapflights users on 4/2. 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.
mar. 5/56:40 pm
ALB
- SEA
1 stop8h 30m
Southwest
mié. 5/136:00 am
SEA
- ALB
1 stop6h 40m
Southwest
Deal found 4/2![Southwest logo]()
$375
This American Airlines deal was found by Cheapflights users on 4/3. 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.
mar. 5/197:19 pm
BDL
- SEA
1 stop8h 17m
American Airlines
sáb. 5/2310:23 am
SEA
- BDL
1 stop10h 03m
American Airlines
Deal found 4/3![American Airlines logo]()
$386
This American Airlines deal was found by Cheapflights users on 4/3. 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.
mar. 5/266:00 am
ALB
- SEA
1 stop11h 16m
American Airlines
lun. 6/110:35 pm
SEA
- ALB
1 stop8h 49m
American Airlines
Deal found 4/3![American Airlines logo]()
$393
This American Airlines deal was found by Cheapflights users on 4/2. 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.
mié. 5/276:17 am
ALB
- SEA
1 stop8h 29m
American Airlines
lun. 6/111:58 pm
SEA
- ALB
1 stop9h 59m
American Airlines
Deal found 4/2![American Airlines logo]()
$390
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 abril 4, 2026.
Search for one-way flight options from Massachusetts to Seattle. Find affordable one-way fares based on user searches. Data last updated abril 4, 2026.
This Kiwi.com deal was found by Cheapflights users on 4/1. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 5/43:50 pm
BDL
- SEA
2 stops29h 45m
Frontier
Deal found 4/1![Frontier logo]()
$131
This Kiwi.com deal was found by Cheapflights users on 4/2. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 4/243:34 pm
BDL
- SEA
2 stops20h 53m
Frontier
Deal found 4/2![Frontier logo]()
$135
This American Airlines deal was found by Cheapflights users on 4/1. 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.
mié. 6/104:46 pm
BOS
- SEA
1 stop9h 13m
American Airlines
Deal found 4/1![American Airlines logo]()
$144
This Kiwi.com deal was found by Cheapflights users on 3/30. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 4/203:50 pm
BDL
- SEA
2 stops20h 37m
Frontier
Deal found 3/30![Frontier logo]()
$145
This American Airlines deal was found by Cheapflights users on 4/3. 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.
sáb. 5/96:00 am
BOS
- SEA
1 stop8h 34m
American Airlines
Deal found 4/3![American Airlines logo]()
$145
This Super.com deal was found by Cheapflights users on 4/2. 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.
mar. 8/257:10 am
BOS
- SEA
Nonstop6h 23m
JetBlue
Deal found 4/2![JetBlue logo]()
$146
This Super.com deal was found by Cheapflights users on 3/31. 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.
mié. 6/107:00 am
BOS
- SEA
Nonstop6h 15m
JetBlue
Deal found 3/31![JetBlue logo]()
$147
This Cheapflightsfares deal was found by Cheapflights users on 3/31. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 9/306:59 pm
BOS
- SEA
Nonstop6h 39m
JetBlue
Deal found 3/31![JetBlue logo]()
$148
This Delta deal was found by Cheapflights users on 3/30. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 6/177:25 pm
BOS
- SEA
Nonstop6h 24m
Delta
Deal found 3/30![Delta logo]()
$149
This Expedia deal was found by Cheapflights users on 4/2. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 7/287:44 pm
BOS
- SEA
Nonstop6h 23m
Alaska Airlines
Deal found 4/2![Alaska Airlines logo]()
$150
This Kiwi.com deal was found by Cheapflights users on 4/3. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 5/59:31 am
BOS
- SEA
2 stops36h 04m
Frontier
Deal found 4/3![Frontier logo]()
$151
This United Airlines deal was found by Cheapflights users on 4/2. 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.
jue. 4/3010:00 am
BOS
- SEA
1 stop9h 12m
United Airlines
Deal found 4/2![United Airlines logo]()
$154
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 abril 4, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $232 (United Airlines) |
One-way from | $131 (Kiwi.com) |
Popular in | December |
Cheapest in | May |
Average price | $352 |
Good round-trip deal | $371 or less |
Good one-way deal | $226 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 2,558,603 searches. Data last updated abril 4, 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
BostonSeattle
BOS - SEA
BOSSEA
Boston Logan Intl
mar. 5/12
7:30 pm-10:40 pm
Nonstop6h 10m
Seattle/Tacoma Intl
vie. 5/29
4:10 pm-12:40 am
Nonstop5h 30m
$251
Quickest round-trip
BostonSeattle
BOS - SEA
BOSSEA
Boston Logan Intl
mar. 4/28
7:37 am-10:55 am
Nonstop6h 18m
Seattle/Tacoma Intl
dom. 5/3
10:35 pm-6:55 am
Nonstop5h 20m
$332
BostonSeattle
BOS - SEA
BOSSEA
Boston Logan Intl
jue. 4/30
7:37 am-10:55 am
Nonstop6h 18m
Seattle/Tacoma Intl
mar. 5/5
10:35 pm-6:55 am
Nonstop5h 20m
$332
BostonSeattle
BOS - SEA
BOSSEA
Boston Logan Intl
mar. 4/28
5:25 pm-11:46 pm
1 stop9h 21m
Seattle/Tacoma Intl
dom. 5/3
10:41 pm-10:18 am
1 stop8h 37m
$352
BostonSeattle
BOS - SEA
BOSSEA
Boston Logan Intl
jue. 7/9
5:30 pm-11:05 pm
1 stop8h 35m
Seattle/Tacoma Intl
mar. 7/14
5:00 am-6:00 pm
1 stop10h 00m
$357
BostonSeattle
BOS - SEA
BOSSEA
Boston Logan Intl
mié. 9/2
6:35 pm-10:05 pm
Nonstop6h 30m
Seattle/Tacoma Intl
lun. 9/7
10:00 pm-6:35 am
Nonstop5h 35m
$357
BostonSeattle
BOS - SEA
BOSSEA
Boston Logan Intl
jue. 4/30
6:45 pm-10:05 pm
Nonstop6h 20m
Seattle/Tacoma Intl
lun. 5/4
3:40 pm-11:59 pm
Nonstop5h 19m
$367
BostonSeattle
BOS - SEA
BOSSEA
Boston Logan Intl
vie. 5/29
7:30 pm-10:40 pm
Nonstop6h 10m
Seattle/Tacoma Intl
vie. 6/5
4:10 pm-12:40 am
Nonstop5h 30m
$371
BostonSeattle
BOS - SEA
BOSSEA
Boston Logan Intl
sáb. 4/25
6:42 pm-9:59 pm
Nonstop6h 17m
Seattle/Tacoma Intl
jue. 5/7
10:45 pm-7:12 am
Nonstop5h 27m
$377
AlbanySeattle
ALB - SEA
ALBSEA
Albany Intl
mié. 4/29
2:45 pm-10:30 pm
2 stops10h 45m
Seattle/Tacoma Intl
mié. 5/6
6:00 am-3:40 pm
1 stop6h 40m
$380
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.
BOS-SEA
MVY-SEA
ALB-SEA
BDL-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
BOS-SEA
MVY-SEA
ALB-SEA
BDL-SEA
What is the cheapest month to book a flight from Massachusetts to Seattle?
Currently, September is the cheapest month in which you can book a flight from Massachusetts to Seattle (average of $118). Flying from Massachusetts to Seattle in February is currently the most expensive (average of $257). 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 abril 4, 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 abril 4, 2026.
The most flights from USMA to SEA are scheduled on a Friday (21 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (11 on average).
How much does it cost to fly round-trip from Massachusetts to Seattle?
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
Tacoma
Ocean Shores
Olympia
Kent
Lynnwood
Lacey
Edmonds
Leavenworth
Snoqualmie
Tukwila
Renton
Puyallup
Kirkland
Ellensburg
Fife
Lakewood
Issaquah
Shoreline
Aberdeen
Browse thousands of different options on Cheapflights for your next trip
Toggle through the tabs below to find thousands of 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 abril 4, 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 abril 4, 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 2,558,603 searches. Data last updated abril 4, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$124 | Average$323 | FlexibilityNo cancel fee | On-time85% | |
| Cheapest$131 | Average$342 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$153 | Average$380 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$172 | Average$325 | FlexibilityNo cancel fee | On-time83% | |
| Cheapest$188 | Average$417 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$213 | Average$393 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$236 | Average$418 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$256 | Average$465 | FlexibilityNo cancel fee | On-time71% |