$120+ 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 8/4. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — SEA
Aug 8 — Aug 151
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 July 9, 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 July 9, 2026.
This Delta deal was found by Cheapflights users on 7/7. 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 9/16:00 am
ALB
- SEA
1 stop7h 31m
Delta
Tue 9/156:00 am
SEA
- ALB
1 stop8h 28m
Delta
Deal found 7/7![Delta logo]()
$261
This Southwest deal was found by Cheapflights users on 7/8. 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 8/276:05 pm
ALB
- SEA
1 stop8h 50m
Southwest
Sat 9/511:05 pm
SEA
- ALB
2 stops10h 50m
Southwest
Deal found 7/8![Southwest logo]()
$266
This Delta deal was found by Cheapflights users on 7/8. 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.
Thu 8/276:15 am
ALB
- SEA
1 stop11h 30m
Delta
Sat 9/511:10 pm
SEA
- ALB
1 stop9h 35m
Delta
Deal found 7/8![Delta logo]()
$296
This Southwest deal was found by Cheapflights users on 7/7. 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 9/12:45 pm
BOS
- SEA
2 stops11h 40m
Southwest
Sat 9/1211:05 pm
SEA
- BOS
1 stop7h 10m
Southwest
Deal found 7/7![Southwest logo]()
$305
This lol.travel deal was found by Cheapflights users on 7/4. 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 8/297:26 pm
BOS
- SEA
Nonstop6h 24m
JetBlue
Sat 9/511:40 pm
SEA
- BOS
Nonstop5h 19m
JetBlue
Deal found 7/4![JetBlue logo]()
$306
This Cheapflightsfares deal was found by Cheapflights users on 7/5. 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 9/512:42 pm
BOS
- SEA
1 stop11h 26m
JetBlue
Sun 9/1311:55 pm
SEA
- BOS
Nonstop5h 24m
JetBlue
Deal found 7/5![JetBlue logo]()
$307
This Cheapflightsfares deal was found by Cheapflights users on 7/6. 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 9/266:59 pm
BOS
- SEA
Nonstop6h 39m
JetBlue
Sat 10/311:55 pm
SEA
- BOS
Nonstop5h 24m
JetBlue
Deal found 7/6![JetBlue logo]()
$309
This Southwest deal was found by Cheapflights users on 7/6. 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 8/245:50 am
BOS
- SEA
2 stops11h 05m
Southwest
Sat 8/299:20 am
SEA
- BOS
1 stop12h 05m
Southwest
Deal found 7/6![Southwest logo]()
$310
This Southwest deal was found by Cheapflights users on 7/8. 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 8/295:00 am
BOS
- SEA
2 stops11h 10m
Southwest
Sat 9/511:05 pm
SEA
- BOS
2 stops10h 55m
Southwest
Deal found 7/8![Southwest logo]()
$311
This American Airlines deal was found by Cheapflights users on 7/8. 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 8/251:11 pm
ALB
- SEA
1 stop11h 48m
American Airlines
Mon 8/3111:56 pm
SEA
- ALB
1 stop7h 34m
American Airlines
Deal found 7/8![American Airlines logo]()
$312
This Cheapflightsfares deal was found by Cheapflights users on 7/8. 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 9/512:42 pm
BOS
- SEA
1 stop11h 26m
JetBlue
Sat 9/1211:55 pm
SEA
- BOS
Nonstop5h 24m
JetBlue
Deal found 7/8![JetBlue logo]()
$312
This Cheapflightsfares deal was found by Cheapflights users on 7/8. 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 9/126:59 pm
BOS
- SEA
Nonstop6h 39m
JetBlue
Tue 9/1511:55 pm
SEA
- BOS
Nonstop5h 24m
JetBlue
Deal found 7/8![JetBlue logo]()
$314
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 July 9, 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 July 9, 2026.
This Southwest deal was found by Cheapflights users on 7/8. 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 8/276:05 pm
ALB
- SEA
1 stop8h 50m
Southwest
Sat 9/511:05 pm
SEA
- ALB
2 stops10h 50m
Southwest
Deal found 7/8![Southwest logo]()
$266
This Delta deal was found by Cheapflights users on 7/8. 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.
Thu 8/276:15 am
ALB
- SEA
1 stop11h 30m
Delta
Sat 9/511:10 pm
SEA
- ALB
1 stop9h 35m
Delta
Deal found 7/8![Delta logo]()
$296
This JetBlue deal was found by Cheapflights users on 7/7. 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.
Mon 9/146:59 pm
BOS
- SEA
Nonstop6h 39m
JetBlue
Fri 10/29:40 pm
SEA
- BOS
1 stop10h 06m
JetBlue
Deal found 7/7![JetBlue logo]()
$331
This United Airlines deal was found by Cheapflights users on 7/8. 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 9/18:15 am
BOS
- SEA
2 stops16h 16m
United Airlines
Sat 9/1211:00 pm
SEA
- BOS
1 stop7h 33m
United Airlines
Deal found 7/8![United Airlines logo]()
$384
This Alaska Airlines deal was found by Cheapflights users on 7/8. 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 9/34:52 pm
BOS
- SEA
Nonstop6h 13m
Alaska Airlines
Mon 9/76:00 am
SEA
- BOS
Nonstop5h 28m
Alaska Airlines
Deal found 7/8![Alaska Airlines logo]()
$387
This Southwest deal was found by Cheapflights users on 7/4. 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 8/295:40 am
BOS
- SEA
1 stop10h 30m
Southwest
Sat 9/59:20 am
SEA
- BOS
1 stop12h 05m
Southwest
Deal found 7/4![Southwest logo]()
$337
This Delta deal was found by Cheapflights users on 7/4. 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.
Wed 9/97:45 pm
BOS
- SEA
Nonstop6h 15m
Delta
Mon 9/2111:08 pm
SEA
- BOS
Nonstop5h 32m
Delta
Deal found 7/4![Delta logo]()
$352
This American Airlines deal was found by Cheapflights users on 7/7. 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.
Wed 7/2212:45 pm
HYA
- SEA
2 stops12h 41m
American Airlines
Sun 7/2610:35 pm
SEA
- HYA
1 stop10h 40m
American Airlines
Deal found 7/7![American Airlines logo]()
$736
This Southwest deal was found by Cheapflights users on 7/4. 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 8/183:20 pm
BOS
- SEA
2 stops10h 45m
Southwest
Tue 8/2510:30 pm
SEA
- BOS
1 stop8h 00m
Southwest
Deal found 7/4![Southwest logo]()
$342
This United Airlines deal was found by Cheapflights users on 7/8. 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.
Fri 8/217:45 am
BOS
- SEA
1 stop11h 29m
United Airlines
Fri 8/289:05 am
SEA
- BOS
2 stops11h 54m
United Airlines
Deal found 7/8![United Airlines logo]()
$394
This Delta deal was found by Cheapflights users on 7/7. 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 9/17:45 am
BOS
- SEA
Nonstop6h 23m
Delta
Thu 9/1011:08 pm
SEA
- BOS
Nonstop5h 32m
Delta
Deal found 7/7![Delta logo]()
$397
This Priceline deal was found by Cheapflights users on 7/7. 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 7/225:21 pm
HYA
- SEA
1 stop8h 33m
Multiple Airlines
Sun 7/2611:46 pm
SEA
- HYA
1 stop10h 04m
Multiple Airlines
Deal found 7/7![Multiple Airlines logo]()
$884
This Southwest deal was found by Cheapflights users on 7/6. 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 8/213:25 pm
BOS
- SEA
2 stops10h 30m
Southwest
Wed 8/2611:05 pm
SEA
- BOS
2 stops10h 25m
Southwest
Deal found 7/6![Southwest logo]()
$372
This United Airlines deal was found by Cheapflights users on 7/5. 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 9/28:15 am
BOS
- SEA
2 stops16h 00m
United Airlines
Thu 9/101:57 pm
SEA
- BOS
1 stop8h 13m
United Airlines
Deal found 7/5![United Airlines logo]()
$415
This Southwest deal was found by Cheapflights users on 7/7. 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 10/910:50 am
BOS
- SEA
1 stop13h 15m
Southwest
Mon 10/126:50 pm
SEA
- BOS
2 stops11h 00m
Southwest
Deal found 7/7![Southwest logo]()
$382
This Delta deal was found by Cheapflights users on 7/7. 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 8/185:05 pm
BDL
- SEA
1 stop8h 00m
Delta
Fri 8/215:30 am
SEA
- BDL
1 stop7h 50m
Delta
Deal found 7/7![Delta logo]()
$482
This United Airlines deal was found by Cheapflights users on 7/8. 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 8/186:00 am
ALB
- SEA
2 stops13h 14m
United Airlines
Tue 8/257:11 am
SEA
- ALB
2 stops13h 47m
United Airlines
Deal found 7/8![United Airlines logo]()
$483
This Southwest deal was found by Cheapflights users on 7/7. 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 9/511:25 am
ALB
- SEA
2 stops12h 30m
Southwest
Sun 9/611:05 pm
SEA
- ALB
1 stop9h 05m
Southwest
Deal found 7/7![Southwest logo]()
$406
This Expedia deal was found by Cheapflights users on 7/4. 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.
Sun 7/1910:58 am
MVY
- SEA
1 stop14h 56m
JetBlue
Thu 7/2311:46 pm
SEA
- MVY
1 stop7h 22m
JetBlue
Deal found 7/4![JetBlue logo]()
$649
This United Airlines deal was found by Cheapflights users on 7/8. 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 8/126:00 am
BDL
- SEA
2 stops13h 14m
United Airlines
Mon 8/247:35 pm
SEA
- BDL
2 stops12h 03m
United Airlines
Deal found 7/8![United Airlines logo]()
$488
This Southwest deal was found by Cheapflights users on 7/6. 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 9/256:05 pm
ALB
- SEA
1 stop8h 50m
Southwest
Sun 10/45:30 am
SEA
- ALB
1 stop7h 30m
Southwest
Deal found 7/6![Southwest logo]()
$416
This Delta deal was found by Cheapflights users on 7/8. 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.
Wed 8/512:55 pm
BDL
- SEA
1 stop8h 50m
Delta
Sun 8/96:35 pm
SEA
- BDL
2 stops13h 19m
Delta
Deal found 7/8![Delta logo]()
$522
This United Airlines deal was found by Cheapflights users on 7/7. 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 9/106:00 am
BDL
- SEA
1 stop8h 32m
United Airlines
Tue 9/227:00 am
SEA
- BDL
1 stop7h 45m
United Airlines
Deal found 7/7![United Airlines logo]()
$519
This United Airlines deal was found by Cheapflights users on 7/4. 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 8/258:10 am
ALB
- SEA
2 stops13h 19m
United Airlines
Sat 8/295:20 pm
SEA
- ALB
2 stops14h 04m
United Airlines
Deal found 7/4![United Airlines logo]()
$521
This Southwest deal was found by Cheapflights users on 7/6. 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 9/43:10 pm
ALB
- SEA
2 stops10h 45m
Southwest
Mon 9/711:05 pm
SEA
- ALB
2 stops10h 10m
Southwest
Deal found 7/6![Southwest logo]()
$497
This United Airlines deal was found by Cheapflights users on 7/4. 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 8/184:50 pm
BDL
- SEA
1 stop8h 53m
United Airlines
Mon 8/247:35 pm
SEA
- BDL
2 stops15h 54m
United Airlines
Deal found 7/4![United Airlines logo]()
$524
This Expedia deal was found by Cheapflights users on 7/5. 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.
Mon 7/2011:28 am
PVC
- SEA
1 stop14h 39m
Multiple Airlines
Fri 7/2411:44 pm
SEA
- PVC
1 stop7h 49m
Multiple Airlines
Deal found 7/5![Multiple Airlines logo]()
$960
This Southwest deal was found by Cheapflights users on 7/7. 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 8/65:25 am
ALB
- SEA
2 stops10h 50m
Southwest
Thu 8/205:15 am
SEA
- ALB
1 stop12h 55m
Southwest
Deal found 7/7![Southwest logo]()
$498
This Southwest deal was found by Cheapflights users on 7/8. 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 9/31:15 pm
ALB
- SEA
2 stops10h 30m
Southwest
Sun 9/1311:05 pm
SEA
- ALB
2 stops10h 35m
Southwest
Deal found 7/8![Southwest logo]()
$508
This United Airlines deal was found by Cheapflights users on 7/4. 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.
Fri 8/219:40 am
BDL
- SEA
1 stop9h 27m
United Airlines
Mon 8/2411:00 pm
SEA
- BDL
1 stop8h 38m
United Airlines
Deal found 7/4![United Airlines logo]()
$563
Last-minute flights from Massachusetts to SeattleDiscover last-minute flight deals from Massachusetts to Seattle. Data last updated July 9, 2026 and is based on user searches.
Discover last-minute flight deals from Massachusetts to Seattle. Data last updated July 9, 2026 and is based on user searches.
This Southwest deal was found by Cheapflights users on 7/7. 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 8/143:25 pm
BOS
- SEA
2 stops10h 30m
Southwest
Wed 8/198:30 am
SEA
- BOS
1 stop12h 55m
Southwest
Deal found 7/7![Southwest logo]()
$316
This Southwest deal was found by Cheapflights users on 7/6. 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 8/245:50 am
BOS
- SEA
2 stops11h 05m
Southwest
Sat 8/299:20 am
SEA
- BOS
1 stop12h 05m
Southwest
Deal found 7/6![Southwest logo]()
$310
This American Airlines deal was found by Cheapflights users on 7/8. 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 8/251:11 pm
ALB
- SEA
1 stop11h 48m
American Airlines
Mon 8/3111:56 pm
SEA
- ALB
1 stop7h 34m
American Airlines
Deal found 7/8![American Airlines logo]()
$312
This Cheapflightsfares deal was found by Cheapflights users on 7/5. 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.
Tue 8/252:45 pm
BOS
- SEA
1 stop9h 23m
JetBlue
Tue 9/111:45 pm
SEA
- BOS
Nonstop5h 19m
JetBlue
Deal found 7/5![JetBlue logo]()
$312
This American Airlines deal was found by Cheapflights users on 7/7. 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.
Wed 8/267:00 am
ALB
- SEA
1 stop10h 45m
American Airlines
Mon 8/319:58 pm
SEA
- ALB
1 stop9h 07m
American Airlines
Deal found 7/7![American Airlines logo]()
$261
This Cheapflightsfares deal was found by Cheapflights users on 7/5. 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.
Wed 8/267:09 am
BOS
- SEA
Nonstop6h 21m
JetBlue
Tue 9/1511:55 pm
SEA
- BOS
Nonstop5h 24m
JetBlue
Deal found 7/5![JetBlue logo]()
$309
This Southwest deal was found by Cheapflights users on 7/8. 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 8/262:45 pm
BOS
- SEA
2 stops11h 40m
Southwest
Sat 8/2911:00 pm
SEA
- BOS
2 stops10h 40m
Southwest
Deal found 7/8![Southwest logo]()
$315
This Southwest deal was found by Cheapflights users on 7/8. 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 8/276:05 pm
ALB
- SEA
1 stop8h 50m
Southwest
Sat 9/511:05 pm
SEA
- ALB
2 stops10h 50m
Southwest
Deal found 7/8![Southwest logo]()
$266
This Delta deal was found by Cheapflights users on 7/8. 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.
Thu 8/276:15 am
ALB
- SEA
1 stop11h 30m
Delta
Sat 9/511:10 pm
SEA
- ALB
1 stop9h 35m
Delta
Deal found 7/8![Delta logo]()
$296
This lol.travel deal was found by Cheapflights users on 7/4. 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 8/297:26 pm
BOS
- SEA
Nonstop6h 24m
JetBlue
Sat 9/511:40 pm
SEA
- BOS
Nonstop5h 19m
JetBlue
Deal found 7/4![JetBlue logo]()
$306
This Southwest deal was found by Cheapflights users on 7/8. 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 8/295:00 am
BOS
- SEA
2 stops11h 10m
Southwest
Sat 9/511:05 pm
SEA
- BOS
2 stops10h 55m
Southwest
Deal found 7/8![Southwest logo]()
$311
This Delta deal was found by Cheapflights users on 7/6. 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 8/296:45 pm
BOS
- SEA
Nonstop6h 35m
Delta
Sat 9/511:13 pm
SEA
- BOS
Nonstop5h 22m
Delta
Deal found 7/6![Delta logo]()
$317
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 July 9, 2026.
Search for one-way flight options from Massachusetts to Seattle. Find affordable one-way fares based on user searches. Data last updated July 9, 2026.
This Delta deal was found by Cheapflights users on 7/8. 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 8/45:24 pm
BDL
- SEA
1 stop9h 33m
Delta
Deal found 7/8![Delta logo]()
$120
This United Airlines deal was found by Cheapflights users on 7/8. 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 9/2912:38 pm
BDL
- SEA
2 stops11h 37m
United Airlines
Deal found 7/8![United Airlines logo]()
$125
This Delta deal was found by Cheapflights users on 7/6. 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 9/11:18 pm
MVY
- SEA
1 stop10h 02m
Delta
Deal found 7/6![Delta logo]()
$131
This Southwest deal was found by Cheapflights users on 7/8. 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 8/246:05 pm
ALB
- SEA
1 stop8h 50m
Southwest
Deal found 7/8![Southwest logo]()
$131
This Southwest deal was found by Cheapflights users on 7/6. 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 9/2611:25 am
ALB
- SEA
2 stops12h 30m
Southwest
Deal found 7/6![Southwest logo]()
$136
This Delta deal was found by Cheapflights users on 7/8. 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.
Fri 8/285:05 pm
BDL
- SEA
1 stop8h 00m
Delta
Deal found 7/8![Delta logo]()
$151
This Kiwi.com deal was found by Cheapflights users on 7/5. 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.
Sun 8/305:40 pm
BDL
- SEA
1 stop19h 59m
Multiple Airlines
Deal found 7/5![Multiple Airlines logo]()
$152
This United Airlines deal was found by Cheapflights users on 7/8. 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.
Fri 8/283:01 pm
BDL
- SEA
2 stops10h 42m
United Airlines
Deal found 7/8![United Airlines logo]()
$156
This Kiwi.com deal was found by Cheapflights users on 7/8. 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.
Mon 8/179:22 pm
ALB
- SEA
2 stops38h 57m
Multiple Airlines
Deal found 7/8![Multiple Airlines logo]()
$164
This Kiwi.com deal was found by Cheapflights users on 7/8. 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.
Tue 9/297:00 am
BDL
- SEA
3 stops30h 00m
Multiple Airlines
Deal found 7/8![Multiple Airlines logo]()
$179
This United Airlines deal was found by Cheapflights users on 7/7. 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 9/39:40 am
BDL
- SEA
2 stops16h 46m
United Airlines
Deal found 7/7![United Airlines logo]()
$180
This United Airlines deal was found by Cheapflights users on 7/7. 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 8/184:00 pm
ALB
- SEA
1 stop9h 43m
United Airlines
Deal found 7/7![United Airlines logo]()
$182
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 July 9, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $261 (Delta) |
One-way from | $120 (Delta) |
Popular in | December |
Cheapest in | October |
Average price | $457 |
Good round-trip deal | $408 or less |
Good one-way deal | $215 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 July 9, 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
AlbanySeattle
ALB - SEA
ALBSEA
Albany Intl
Thu 8/27
6:05 pm-11:55 pm
1 stop8h 50m
Seattle/Tacoma Intl
Sat 9/5
11:05 pm-12:55 pm
2 stops10h 50m
$266
AlbanySeattle
ALB - SEA
ALBSEA
Albany Intl
Thu 8/27
6:15 am-2:45 pm
1 stop11h 30m
Seattle/Tacoma Intl
Sat 9/5
11:10 pm-11:45 am
1 stop9h 35m
$296
BostonSeattle
BOS - SEA
BOSSEA
Boston Logan Intl
Mon 9/14
6:59 pm-10:38 pm
Nonstop6h 39m
Seattle/Tacoma Intl
Fri 10/2
9:40 pm-10:46 am
1 stop10h 06m
$331
BostonSeattle
BOS - SEA
BOSSEA
Boston Logan Intl
Sat 8/29
5:40 am-1:10 pm
1 stop10h 30m
Seattle/Tacoma Intl
Sat 9/5
9:20 am-12:25 am
1 stop12h 05m
$337
BostonSeattle
BOS - SEA
BOSSEA
Boston Logan Intl
Tue 8/18
3:20 pm-11:05 pm
2 stops10h 45m
Seattle/Tacoma Intl
Tue 8/25
10:30 pm-9:30 am
1 stop8h 00m
$342
BostonSeattle
BOS - SEA
BOSSEA
Boston Logan Intl
Wed 9/9
7:45 pm-11:00 pm
Nonstop6h 15m
Seattle/Tacoma Intl
Mon 9/21
11:08 pm-7:40 am
Nonstop5h 32m
$352
BostonSeattle
BOS - SEA
BOSSEA
Boston Logan Intl
Fri 8/21
3:25 pm-10:55 pm
2 stops10h 30m
Seattle/Tacoma Intl
Wed 8/26
11:05 pm-12:30 pm
2 stops10h 25m
$372
BostonSeattle
BOS - SEA
BOSSEA
Boston Logan Intl
Fri 10/9
10:50 am-9:05 pm
1 stop13h 15m
Seattle/Tacoma Intl
Mon 10/12
6:50 pm-8:50 am
2 stops11h 00m
$382
BostonSeattle
BOS - SEA
BOSSEA
Boston Logan Intl
Tue 9/1
8:15 am-9:31 pm
2 stops16h 16m
Seattle/Tacoma Intl
Sat 9/12
11:00 pm-9:33 am
1 stop7h 33m
$384
Quickest round-trip
BostonSeattle
BOS - SEA
BOSSEA
Boston Logan Intl
Thu 9/3
4:52 pm-8:05 pm
Nonstop6h 13m
Seattle/Tacoma Intl
Mon 9/7
6:00 am-2:28 pm
Nonstop5h 28m
$387
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
HYA-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 $108). Flying from Massachusetts to Seattle in December is currently the most expensive (average of $1,313). 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 July 9, 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 July 9, 2026.
The most flights from USMA to SEA are scheduled on a Thursday (39 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (9 on average).
How much does it cost to fly round-trip from Massachusetts to Seattle?
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
Tacoma
Lacey
Leavenworth
Olympia
Ocean Shores
Edmonds
Snoqualmie
Tumwater
Tukwila
Renton
Kent
Lynnwood
Ellensburg
Fife
Marysville
Lakewood
Issaquah
Shoreline
Centralia
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 July 9, 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 July 9, 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 July 9, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$108 | Average$277 | FlexibilityNo cancel fee | On-time85% | |
| Cheapest$149 | Average$392 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$160 | Average$415 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$174 | Average$366 | FlexibilityNo cancel fee | On-time83% | |
| Cheapest$230 | Average$432 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$250 | Average$399 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$256 | Average$455 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$259 | Average$396 | FlexibilityNo cancel fee | On-time63% |