$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 9/26. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — SEA
Aug 13 — Aug 201
Round-trip
1 adult, Economy
We work with more than 300 partners to bring you better travel deals
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
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from Massachusetts to Seattle
Cheapest
Best
Last-minute
One-way
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 14, 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 14, 2026.
This United Airlines deal was found by Cheapflights users on 7/10. 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 9/18:10 am
ALB
- SEA
1 stop10h 57m
United Airlines
Tue 9/1511:00 pm
SEA
- ALB
1 stop8h 24m
United Airlines
Deal found 7/10![United Airlines logo]()
$261
This Southwest deal was found by Cheapflights users on 7/9. 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 8/253:05 pm
ALB
- SEA
2 stops11h 30m
Southwest
Mon 8/3111:05 pm
SEA
- ALB
1 stop9h 30m
Southwest
Deal found 7/9![Southwest logo]()
$266
This Southwest deal was found by Cheapflights users on 7/10. 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 9/13:05 pm
ALB
- SEA
2 stops11h 30m
Southwest
Tue 9/157:10 am
SEA
- ALB
2 stops10h 50m
Southwest
Deal found 7/10![Southwest logo]()
$271
This United Airlines deal was found by Cheapflights users on 7/10. 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 9/104:53 pm
ALB
- SEA
1 stop8h 52m
United Airlines
Sat 9/1911:00 pm
SEA
- ALB
1 stop8h 24m
United Airlines
Deal found 7/10![United Airlines logo]()
$286
This American Airlines deal was found by Cheapflights users on 7/9. 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 8/281:11 pm
ALB
- SEA
1 stop11h 48m
American Airlines
Tue 9/111:56 pm
SEA
- ALB
1 stop7h 34m
American Airlines
Deal found 7/9![American Airlines logo]()
$296
This United Airlines deal was found by Cheapflights users on 7/13. 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
1 stop10h 57m
United Airlines
Wed 9/211:00 pm
SEA
- ALB
1 stop8h 24m
United Airlines
Deal found 7/13![United Airlines logo]()
$301
This Southwest deal was found by Cheapflights users on 7/10. 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 9/106:05 pm
ALB
- SEA
1 stop8h 50m
Southwest
Sat 9/1911:00 pm
SEA
- ALB
2 stops10h 20m
Southwest
Deal found 7/10![Southwest logo]()
$304
This Southwest deal was found by Cheapflights users on 7/13. 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 8/254:15 pm
ALB
- SEA
1 stop9h 50m
Southwest
Tue 9/15:20 am
SEA
- ALB
2 stops9h 10m
Southwest
Deal found 7/13![Southwest logo]()
$306
This Southwest deal was found by Cheapflights users on 7/9. 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 8/148:40 am
BOS
- SEA
1 stop16h 05m
Southwest
Thu 8/209:10 am
SEA
- BOS
1 stop12h 15m
Southwest
Deal found 7/9![Southwest logo]()
$306
This lol.travel deal was found by Cheapflights users on 7/10. 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 7/10![JetBlue logo]()
$307
This Southwest deal was found by Cheapflights users on 7/10. 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 11/48:20 am
ALB
- SEA
2 stops13h 15m
Southwest
Mon 11/96:35 pm
SEA
- ALB
2 stops10h 55m
Southwest
Deal found 7/10![Southwest logo]()
$309
This lol.travel deal was found by Cheapflights users on 7/13. 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 9/57:21 pm
BOS
- SEA
Nonstop6h 23m
JetBlue
Mon 9/1411:55 pm
SEA
- BOS
Nonstop5h 24m
JetBlue
Deal found 7/13![JetBlue logo]()
$309
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 14, 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 14, 2026.
This Southwest deal was found by Cheapflights users on 7/13. 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 8/293:55 pm
ALB
- SEA
1 stop8h 00m
Southwest
Tue 9/111:05 pm
SEA
- ALB
2 stops10h 10m
Southwest
Deal found 7/13![Southwest logo]()
$306
This Delta deal was found by Cheapflights users on 7/9. 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 9/56:45 pm
BOS
- SEA
Nonstop6h 35m
Delta
Mon 9/1411:08 pm
SEA
- BOS
Nonstop5h 32m
Delta
Deal found 7/9![Delta logo]()
$352
This Alaska Airlines deal was found by Cheapflights users on 7/12. 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 9/18:00 am
BOS
- SEA
1 stop12h 51m
Alaska Airlines
Sun 9/136:51 pm
SEA
- BOS
1 stop8h 18m
Alaska Airlines
Deal found 7/12![Alaska Airlines logo]()
$357
This United Airlines deal was found by Cheapflights users on 7/9. 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
ALB
- SEA
1 stop9h 08m
United Airlines
Sat 9/267:25 pm
SEA
- ALB
2 stops12h 14m
United Airlines
Deal found 7/9![United Airlines logo]()
$376
This Southwest deal was found by Cheapflights users on 7/10. 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
Fri 10/212:10 am
SEA
- ALB
2 stops11h 10m
Southwest
Deal found 7/10![Southwest logo]()
$324
This American Airlines deal was found by Cheapflights users on 7/14. 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 8/2812:42 pm
HYA
- SEA
1 stop11h 16m
American Airlines
Fri 9/411:56 pm
SEA
- HYA
2 stops9h 16m
American Airlines
Deal found 7/14![American Airlines logo]()
$681
This Southwest deal was found by Cheapflights users on 7/13. 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 8/206:05 pm
ALB
- SEA
1 stop8h 50m
Southwest
Wed 8/265:20 am
SEA
- ALB
2 stops9h 10m
Southwest
Deal found 7/13![Southwest logo]()
$342
This United Airlines deal was found by Cheapflights users on 7/13. 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 9/122:28 pm
BOS
- SEA
2 stops11h 17m
United Airlines
Tue 9/157:11 am
SEA
- BOS
1 stop8h 59m
United Airlines
Deal found 7/13![United Airlines logo]()
$388
This Delta deal was found by Cheapflights users on 7/13. 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 8/267:35 pm
BOS
- SEA
Nonstop6h 36m
Delta
Sun 8/3011:13 pm
SEA
- BOS
Nonstop5h 22m
Delta
Deal found 7/13![Delta logo]()
$407
This Southwest deal was found by Cheapflights users on 7/13. 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 9/265:40 am
BOS
- SEA
1 stop10h 30m
Southwest
Mon 10/1212:10 am
SEA
- BOS
2 stops11h 45m
Southwest
Deal found 7/13![Southwest logo]()
$342
This Expedia deal was found by Cheapflights users on 7/9. 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.
Sat 8/82:10 pm
HYA
- SEA
1 stop11h 40m
Multiple Airlines
Fri 8/1411:45 pm
SEA
- HYA
2 stops15h 05m
Multiple Airlines
Deal found 7/9![Multiple Airlines logo]()
$921
This United Airlines deal was found by Cheapflights users on 7/12. 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 9/212:41 pm
BOS
- SEA
2 stops13h 02m
United Airlines
Thu 9/1011:04 pm
SEA
- BOS
1 stop8h 14m
United Airlines
Deal found 7/12![United Airlines logo]()
$419
This Delta deal was found by Cheapflights users on 7/14. 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 8/144:05 pm
BOS
- SEA
Nonstop6h 35m
Delta
Mon 8/1711:13 pm
SEA
- BOS
Nonstop5h 22m
Delta
Deal found 7/14![Delta logo]()
$442
This JetBlue deal was found by Cheapflights users on 7/13. 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 7/284:20 pm
PVC
- SEA
1 stop9h 34m
JetBlue
Wed 7/2911:46 pm
SEA
- PVC
1 stop10h 26m
JetBlue
Deal found 7/13![JetBlue logo]()
$1,009
This United Airlines deal was found by Cheapflights users on 7/11. 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 9/127:05 am
BOS
- SEA
2 stops15h 03m
United Airlines
Sun 9/2011:00 pm
SEA
- BOS
1 stop7h 33m
United Airlines
Deal found 7/11![United Airlines logo]()
$419
This Southwest deal was found by Cheapflights users on 7/9. 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
Mon 8/177:25 pm
SEA
- BOS
2 stops11h 05m
Southwest
Deal found 7/9![Southwest logo]()
$397
This United Airlines deal was found by Cheapflights users on 7/9. 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 9/29:25 am
BOS
- SEA
2 stops12h 42m
United Airlines
Fri 9/115:20 pm
SEA
- BOS
1 stop9h 42m
United Airlines
Deal found 7/9![United Airlines logo]()
$419
This Southwest deal was found by Cheapflights users on 7/13. 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 8/123:05 pm
BDL
- SEA
2 stops11h 20m
Southwest
Wed 8/1911:00 pm
SEA
- BDL
2 stops11h 00m
Southwest
Deal found 7/13![Southwest logo]()
$429
This United Airlines deal was found by Cheapflights users on 7/11. 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 9/2212:12 pm
BDL
- SEA
1 stop10h 03m
United Airlines
Sat 9/2611:13 pm
SEA
- BDL
1 stop8h 40m
United Airlines
Deal found 7/11![United Airlines logo]()
$475
This Southwest deal was found by Cheapflights users on 7/9. 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 9/43:25 pm
BOS
- SEA
2 stops10h 30m
Southwest
Fri 9/117:25 pm
SEA
- BOS
2 stops11h 30m
Southwest
Deal found 7/9![Southwest logo]()
$452
This United Airlines deal was found by Cheapflights users on 7/9. 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 stops11h 04m
United Airlines
Sun 8/307:35 pm
SEA
- ALB
2 stops11h 49m
United Airlines
Deal found 7/9![United Airlines logo]()
$479
This American Airlines deal was found by Cheapflights users on 7/11. 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 8/1312:42 pm
HYA
- SEA
1 stop11h 16m
American Airlines
Wed 8/195:50 am
SEA
- HYA
2 stops27h 22m
American Airlines
Deal found 7/11![American Airlines logo]()
$802
This Southwest deal was found by Cheapflights users on 7/11. 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 8/122:45 pm
BOS
- SEA
2 stops11h 40m
Southwest
Sat 8/229:20 am
SEA
- BOS
1 stop12h 05m
Southwest
Deal found 7/11![Southwest logo]()
$462
This United Airlines deal was found by Cheapflights users on 7/13. 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 9/511:44 am
BDL
- SEA
2 stops11h 59m
United Airlines
Tue 9/155:20 pm
SEA
- BDL
2 stops14h 18m
United Airlines
Deal found 7/13![United Airlines logo]()
$485
This American Airlines deal was found by Cheapflights users on 7/11. 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 8/125:59 pm
HYA
- SEA
2 stops18h 30m
American Airlines
Sat 8/223:35 pm
SEA
- HYA
2 stops17h 37m
American Airlines
Deal found 7/11![American Airlines logo]()
$846
This United Airlines deal was found by Cheapflights users on 7/9. 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 8/1411:44 am
BDL
- SEA
2 stops14h 42m
United Airlines
Sun 8/1611:00 pm
SEA
- BDL
1 stop8h 38m
United Airlines
Deal found 7/9![United Airlines logo]()
$492
This Southwest deal was found by Cheapflights users on 7/13. 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 11/257:20 am
BDL
- SEA
1 stop8h 20m
Southwest
Tue 12/16:15 am
SEA
- BDL
2 stops12h 45m
Southwest
Deal found 7/13![Southwest logo]()
$495
This JetBlue deal was found by Cheapflights users on 7/13. 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 7/252:20 pm
MVY
- SEA
1 stop11h 11m
JetBlue
Wed 7/2911:46 pm
SEA
- MVY
1 stop7h 22m
JetBlue
Deal found 7/13![JetBlue logo]()
$1,016
This American Airlines deal was found by Cheapflights users on 7/11. 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 8/1312:42 pm
HYA
- SEA
1 stop11h 16m
American Airlines
Fri 8/213:35 pm
SEA
- HYA
1 stop20h 22m
American Airlines
Deal found 7/11![American Airlines logo]()
$864
This United Airlines deal was found by Cheapflights users on 7/10. 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
BDL
- SEA
2 stops13h 14m
United Airlines
Mon 8/245:13 pm
SEA
- BDL
1 stop18h 16m
United Airlines
Deal found 7/10![United Airlines logo]()
$497
Last-minute flights from Massachusetts to SeattleDiscover last-minute flight deals from Massachusetts to Seattle. Data last updated July 14, 2026 and is based on user searches.
Discover last-minute flight deals from Massachusetts to Seattle. Data last updated July 14, 2026 and is based on user searches.
This Delta deal was found by Cheapflights users on 7/9. 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 7/237:29 pm
BOS
- SEA
Nonstop6h 33m
Delta
Thu 8/611:13 pm
SEA
- BOS
Nonstop5h 22m
Delta
Deal found 7/9![Delta logo]()
$412
This Delta deal was found by Cheapflights users on 7/9. 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 7/247:29 pm
BOS
- SEA
Nonstop6h 33m
Delta
Wed 8/53:59 pm
SEA
- BOS
Nonstop5h 18m
Delta
Deal found 7/9![Delta logo]()
$377
This Southwest deal was found by Cheapflights users on 7/13. 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 8/206:05 pm
ALB
- SEA
1 stop8h 50m
Southwest
Wed 8/265:20 am
SEA
- ALB
2 stops9h 10m
Southwest
Deal found 7/13![Southwest logo]()
$342
This Southwest deal was found by Cheapflights users on 7/9. 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 8/256:20 pm
ALB
- SEA
1 stop8h 15m
Southwest
Mon 8/3111:05 pm
SEA
- ALB
1 stop9h 30m
Southwest
Deal found 7/9![Southwest logo]()
$261
This United Airlines deal was found by Cheapflights users on 7/13. 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
1 stop10h 57m
United Airlines
Wed 9/211:00 pm
SEA
- ALB
1 stop8h 24m
United Airlines
Deal found 7/13![United Airlines logo]()
$301
This Southwest deal was found by Cheapflights users on 7/13. 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 8/254:15 pm
ALB
- SEA
1 stop9h 50m
Southwest
Tue 9/15:20 am
SEA
- ALB
2 stops9h 10m
Southwest
Deal found 7/13![Southwest logo]()
$306
This Southwest deal was found by Cheapflights users on 7/13. 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 8/2512:50 pm
ALB
- SEA
2 stops11h 25m
Southwest
Wed 9/25:20 am
SEA
- ALB
2 stops9h 10m
Southwest
Deal found 7/13![Southwest logo]()
$329
This United Airlines deal was found by Cheapflights users on 7/12. 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 8/266:00 am
ALB
- SEA
1 stop8h 32m
United Airlines
Wed 8/2611:00 pm
SEA
- ALB
1 stop8h 24m
United Airlines
Deal found 7/12![United Airlines logo]()
$312
This American Airlines deal was found by Cheapflights users on 7/9. 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 8/271:11 pm
ALB
- SEA
1 stop8h 37m
American Airlines
Tue 9/811:56 pm
SEA
- ALB
1 stop8h 24m
American Airlines
Deal found 7/9![American Airlines logo]()
$318
This Southwest deal was found by Cheapflights users on 7/13. 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 8/2710:15 am
ALB
- SEA
2 stops10h 20m
Southwest
Tue 9/15:20 am
SEA
- ALB
2 stops9h 10m
Southwest
Deal found 7/13![Southwest logo]()
$340
This American Airlines deal was found by Cheapflights users on 7/9. 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 8/281:11 pm
ALB
- SEA
1 stop11h 48m
American Airlines
Tue 9/111:56 pm
SEA
- ALB
1 stop7h 34m
American Airlines
Deal found 7/9![American Airlines logo]()
$296
This United Airlines deal was found by Cheapflights users on 7/9. 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 8/282:49 pm
ALB
- SEA
2 stops11h 15m
United Airlines
Tue 9/111:00 pm
SEA
- ALB
1 stop8h 24m
United Airlines
Deal found 7/9![United Airlines logo]()
$310
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 14, 2026.
Search for one-way flight options from Massachusetts to Seattle. Find affordable one-way fares based on user searches. Data last updated July 14, 2026.
This Delta deal was found by Cheapflights users on 7/10. 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 8/224:40 pm
BDL
- SEA
1 stop10h 17m
Delta
Deal found 7/10![Delta logo]()
$120
This Southwest deal was found by Cheapflights users on 7/9. 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 9/153:05 pm
BDL
- SEA
2 stops11h 00m
Southwest
Deal found 7/9![Southwest logo]()
$125
This United Airlines deal was found by Cheapflights users on 7/10. 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 9/238:00 am
ALB
- SEA
1 stop10h 52m
United Airlines
Deal found 7/10![United Airlines logo]()
$131
This Southwest deal was found by Cheapflights users on 7/10. 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
ALB
- SEA
2 stops11h 10m
Southwest
Deal found 7/10![Southwest logo]()
$136
This Kiwi.com deal was found by Cheapflights users on 7/11. 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 8/109:22 pm
ALB
- SEA
2 stops38h 42m
Multiple Airlines
Deal found 7/11![Multiple Airlines logo]()
$140
This Southwest deal was found by Cheapflights users on 7/9. 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 10/57:05 pm
BDL
- SEA
1 stop8h 30m
Southwest
Deal found 7/9![Southwest logo]()
$146
This Kiwi.com deal was found by Cheapflights users on 7/12. 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 9/2812:39 pm
ALB
- SEA
2 stops38h 48m
Multiple Airlines
Deal found 7/12![Multiple Airlines logo]()
$146
This Southwest deal was found by Cheapflights users on 7/9. 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 7/9![Southwest logo]()
$147
This Delta deal was found by Cheapflights users on 7/10. 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 8/205:30 am
BDL
- SEA
1 stop8h 01m
Delta
Deal found 7/10![Delta logo]()
$150
This Delta deal was found by Cheapflights users on 7/10. 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 8/215:05 pm
BDL
- SEA
1 stop8h 00m
Delta
Deal found 7/10![Delta logo]()
$151
This Southwest deal was found by Cheapflights users on 7/13. 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
ALB
- SEA
1 stop8h 50m
Southwest
Deal found 7/13![Southwest logo]()
$151
This Kiwi.com deal was found by Cheapflights users on 7/10. 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 8/39:10 pm
ALB
- SEA
2 stops43h 07m
Multiple Airlines
Deal found 7/10![Multiple Airlines logo]()
$156
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 14, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $261 (United Airlines) |
One-way from | $120 (Delta) |
Popular in | December |
Cheapest in | October |
Average price | $463 |
Good round-trip deal | $401 or less |
Good one-way deal | $220 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 14, 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
Sat 8/29
3:55 pm-8:55 pm
1 stop8h 00m
Seattle/Tacoma Intl
Tue 9/1
11:05 pm-12:15 pm
2 stops10h 10m
$306
AlbanySeattle
ALB - SEA
ALBSEA
Albany Intl
Fri 9/25
6:05 pm-11:55 pm
1 stop8h 50m
Seattle/Tacoma Intl
Fri 10/2
12:10 am-2:20 pm
2 stops11h 10m
$324
AlbanySeattle
ALB - SEA
ALBSEA
Albany Intl
Thu 8/20
6:05 pm-11:55 pm
1 stop8h 50m
Seattle/Tacoma Intl
Wed 8/26
5:20 am-5:30 pm
2 stops9h 10m
$342
BostonSeattle
BOS - SEA
BOSSEA
Boston Logan Intl
Sat 9/26
5:40 am-1:10 pm
1 stop10h 30m
Seattle/Tacoma Intl
Mon 10/12
12:10 am-2:55 pm
2 stops11h 45m
$342
BostonSeattle
BOS - SEA
BOSSEA
Boston Logan Intl
Sat 9/5
6:45 pm-10:20 pm
Nonstop6h 35m
Seattle/Tacoma Intl
Mon 9/14
11:08 pm-7:40 am
Nonstop5h 32m
$352
BostonSeattle
BOS - SEA
BOSSEA
Boston Logan Intl
Tue 9/1
8:00 am-5:51 pm
1 stop12h 51m
Seattle/Tacoma Intl
Sun 9/13
6:51 pm-6:09 am
1 stop8h 18m
$357
AlbanySeattle
ALB - SEA
ALBSEA
Albany Intl
Tue 9/22
1:07 pm-7:15 pm
1 stop9h 08m
Seattle/Tacoma Intl
Sat 9/26
7:25 pm-10:39 am
2 stops12h 14m
$376
BostonSeattle
BOS - SEA
BOSSEA
Boston Logan Intl
Sat 9/12
2:28 pm-10:45 pm
2 stops11h 17m
Seattle/Tacoma Intl
Tue 9/15
7:11 am-7:10 pm
1 stop8h 59m
$388
BostonSeattle
BOS - SEA
BOSSEA
Boston Logan Intl
Fri 8/14
3:25 pm-10:55 pm
2 stops10h 30m
Seattle/Tacoma Intl
Mon 8/17
7:25 pm-9:30 am
2 stops11h 05m
$397
BostonSeattle
BOS - SEA
BOSSEA
Boston Logan Intl
Wed 8/26
7:35 pm-11:11 pm
Nonstop6h 36m
Seattle/Tacoma Intl
Sun 8/30
11:13 pm-7:35 am
Nonstop5h 22m
$407
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 $1,317). 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 14, 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 14, 2026.
The most flights from USMA to SEA are scheduled on a Tuesday (37 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (10 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
Puyallup
Ellensburg
Fife
Marysville
Lakewood
Issaquah
Shoreline
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.
Alternative routes
Complete your trip
Flights by cabin class
Other flight options
Popular flights
Seattle flight routes
Top destinations
Alternative routes for Massachusetts to Seattle
See prices for flight routes from nearby airports that may be better suited for you.
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 14, 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 14, 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 14, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$98 | Average$278 | FlexibilityNo cancel fee | On-time85% | |
| Cheapest$149 | Average$394 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$161 | Average$417 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$174 | Average$366 | FlexibilityNo cancel fee | On-time83% | |
| Cheapest$231 | Average$436 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$250 | Average$398 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$256 | Average$451 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$259 | Average$406 | FlexibilityNo cancel fee | On-time63% |