$121+ Cheap flights from New Hampshire 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 4/29. Fares are subject to change and may not be available on all flights or dates of travel.
MHT — SEA
Mrz 23 — Mrz 301
1 adult, Economy
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Cheapest flights from New Hampshire to SeattleExplore the most affordable flight options available from New Hampshire to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on Februar 21, 2026.
Explore the most affordable flight options available from New Hampshire to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on Februar 21, 2026.
This United Airlines deal was found by Cheapflights users on 2/18. Clicking the “Pick Dates” 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.
Fr 5/84:45 pm
PWM
- SEA
1 stop10h 12m
United Airlines
Di 5/198:00 am
SEA
- PWM
1 stop8h 04m
United Airlines
Deal found 2/18![United Airlines logo]()
$241
This Delta deal was found by Cheapflights users on 2/19. Clicking the “Pick Dates” 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.
Mi 5/271:18 pm
PWM
- SEA
2 stops13h 23m
Delta
Fr 5/295:30 am
SEA
- PWM
1 stop7h 33m
Delta
Deal found 2/19![Delta logo]()
$246
This Delta deal was found by Cheapflights users on 2/19. Clicking the “Pick Dates” 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.
Mi 5/271:18 pm
PWM
- SEA
2 stops13h 23m
Delta
Do 5/2811:59 pm
SEA
- PWM
2 stops8h 58m
Delta
Deal found 2/19![Delta logo]()
$251
This American Airlines deal was found by Cheapflights users on 2/21. Clicking the “Pick Dates” 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.
Do 3/195:31 pm
BOS
- SEA
1 stop9h 53m
American Airlines
Mo 3/2310:08 pm
SEA
- BOS
1 stop9h 49m
American Airlines
Deal found 2/21![American Airlines logo]()
$257
This Delta deal was found by Cheapflights users on 2/20. Clicking the “Pick Dates” 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.
Mi 3/252:30 pm
PWM
- SEA
1 stop10h 52m
Delta
Mo 4/206:00 am
SEA
- PWM
1 stop6h 57m
Delta
Deal found 2/20![Delta logo]()
$259
This Delta deal was found by Cheapflights users on 2/20. Clicking the “Pick Dates” 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.
Fr 3/206:45 pm
BOS
- SEA
Nonstop6h 25m
Delta
Di 3/246:05 pm
SEA
- BOS
2 stops13h 50m
Delta
Deal found 2/20![Delta logo]()
$260
This Delta deal was found by Cheapflights users on 2/17. Clicking the “Pick Dates” 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.
Mi 5/207:30 pm
BOS
- SEA
Nonstop6h 09m
Delta
Fr 5/2911:00 pm
SEA
- BOS
Nonstop5h 35m
Delta
Deal found 2/17![Delta logo]()
$262
This Southwest deal was found by Cheapflights users on 2/19. Clicking the “Pick Dates” 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.
Di 5/52:25 pm
BOS
- SEA
2 stops11h 05m
Southwest
Di 5/129:20 am
SEA
- BOS
1 stop11h 45m
Southwest
Deal found 2/19![Southwest logo]()
$263
This American Airlines deal was found by Cheapflights users on 2/21. Clicking the “Pick Dates” 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.
Fr 2/275:40 pm
PWM
- SEA
1 stop9h 44m
American Airlines
Di 3/310:57 pm
SEA
- PWM
1 stop10h 02m
American Airlines
Deal found 2/21![American Airlines logo]()
$263
This Delta deal was found by Cheapflights users on 2/19. Clicking the “Pick Dates” 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.
Do 3/192:30 pm
PWM
- SEA
1 stop10h 52m
Delta
Mo 3/3011:59 pm
SEA
- PWM
2 stops9h 10m
Delta
Deal found 2/19![Delta logo]()
$264
This Delta deal was found by Cheapflights users on 2/19. Clicking the “Pick Dates” 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.
Mi 3/189:05 am
BOS
- SEA
1 stop8h 15m
Delta
Di 3/246:05 pm
SEA
- BOS
2 stops13h 50m
Delta
Deal found 2/19![Delta logo]()
$265
This Delta deal was found by Cheapflights users on 2/18. Clicking the “Pick Dates” 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.
Mi 4/157:37 am
BOS
- SEA
Nonstop6h 18m
Delta
Mo 4/2010:35 pm
SEA
- BOS
Nonstop5h 20m
Delta
Deal found 2/18![Delta logo]()
$267
Best flights from New Hampshire to SeattleDiscover carefully curated flight deals from New Hampshire to Seattle that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated Februar 21, 2026.
Discover carefully curated flight deals from New Hampshire to Seattle that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated Februar 21, 2026.
This United Airlines deal was found by Cheapflights users on 2/19. Clicking the “Pick Dates” 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.
Mi 3/113:44 pm
PWM
- SEA
1 stop10h 09m
United Airlines
Di 3/2411:59 pm
SEA
- PWM
1 stop7h 50m
United Airlines
Deal found 2/19![United Airlines logo]()
$241
This American Airlines deal was found by Cheapflights users on 2/17. Clicking the “Pick Dates” 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.
Di 4/77:07 am
PWM
- SEA
1 stop10h 20m
American Airlines
Mi 4/87:00 am
SEA
- PWM
1 stop7h 31m
American Airlines
Deal found 2/17![American Airlines logo]()
$241
This Delta deal was found by Cheapflights users on 2/17. Clicking the “Pick Dates” 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.
Fr 3/136:50 pm
BOS
- SEA
Nonstop6h 20m
Delta
Do 3/2610:25 pm
SEA
- BOS
Nonstop5h 25m
Delta
Deal found 2/17![Delta logo]()
$267
This Southwest deal was found by Cheapflights users on 2/17. Clicking the “Pick Dates” 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.
Mi 3/116:00 pm
BOS
- SEA
1 stop8h 55m
Southwest
Mi 3/1811:55 pm
SEA
- BOS
1 stop8h 15m
Southwest
Deal found 2/17![Southwest logo]()
$267
This United Airlines deal was found by Cheapflights users on 2/18. Clicking the “Pick Dates” 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.
Fr 5/84:45 pm
PWM
- SEA
1 stop10h 12m
United Airlines
Di 5/198:00 am
SEA
- PWM
1 stop8h 04m
United Airlines
Deal found 2/18![United Airlines logo]()
$241
This American Airlines deal was found by Cheapflights users on 2/17. Clicking the “Pick Dates” 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.
Sa 4/253:40 pm
PWM
- SEA
2 stops11h 50m
American Airlines
Sa 5/210:47 pm
SEA
- PWM
1 stop8h 36m
American Airlines
Deal found 2/17![American Airlines logo]()
$246
This Delta deal was found by Cheapflights users on 2/19. Clicking the “Pick Dates” 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.
Mo 4/136:45 pm
BOS
- SEA
Nonstop6h 20m
Delta
So 4/1910:35 pm
SEA
- BOS
Nonstop5h 20m
Delta
Deal found 2/19![Delta logo]()
$267
This Delta deal was found by Cheapflights users on 2/19. Clicking the “Pick Dates” 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.
Mo 3/307:10 am
BOS
- SEA
Nonstop6h 27m
Delta
Fr 4/33:45 pm
SEA
- BOS
Nonstop5h 14m
Delta
Deal found 2/19![Delta logo]()
$267
This Expedia deal was found by Cheapflights users on 2/20. Clicking the “Pick Dates” 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.
Sa 3/72:09 pm
LEB
- SEA
1 stop10h 51m
Multiple Airlines
Mi 3/1110:40 pm
SEA
- LEB
1 stop8h 13m
Multiple Airlines
Deal found 2/20![Multiple Airlines logo]()
$600
This United Airlines deal was found by Cheapflights users on 2/17. Clicking the “Pick Dates” 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.
Di 3/174:23 pm
PWM
- SEA
1 stop9h 22m
United Airlines
Di 3/247:00 am
SEA
- PWM
2 stops13h 04m
United Airlines
Deal found 2/17![United Airlines logo]()
$282
This American Airlines deal was found by Cheapflights users on 2/17. Clicking the “Pick Dates” 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.
Di 4/213:39 pm
PWM
- SEA
2 stops11h 51m
American Airlines
Di 4/281:19 pm
SEA
- PWM
1 stop7h 54m
American Airlines
Deal found 2/17![American Airlines logo]()
$282
This Delta deal was found by Cheapflights users on 2/20. Clicking the “Pick Dates” 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.
Mi 5/134:48 pm
PWM
- SEA
1 stop8h 40m
Delta
Di 5/199:35 am
SEA
- PWM
2 stops11h 59m
Delta
Deal found 2/20![Delta logo]()
$275
This United Airlines deal was found by Cheapflights users on 2/19. Clicking the “Pick Dates” 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.
Mi 3/43:05 pm
PWM
- SEA
1 stop11h 46m
United Airlines
Mo 3/1611:59 pm
SEA
- PWM
1 stop7h 50m
United Airlines
Deal found 2/19![United Airlines logo]()
$284
This American Airlines deal was found by Cheapflights users on 2/18. Clicking the “Pick Dates” 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.
Mo 4/65:40 pm
PWM
- SEA
1 stop9h 44m
American Airlines
So 4/1212:34 pm
SEA
- PWM
1 stop7h 58m
American Airlines
Deal found 2/18![American Airlines logo]()
$293
This Delta deal was found by Cheapflights users on 2/18. Clicking the “Pick Dates” 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.
Mo 3/307:10 am
BOS
- SEA
Nonstop6h 27m
Delta
Do 4/24:55 pm
SEA
- BOS
1 stop10h 15m
Delta
Deal found 2/18![Delta logo]()
$277
This Southwest deal was found by Cheapflights users on 2/18. Clicking the “Pick Dates” 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.
Do 5/77:10 pm
MHT
- SEA
1 stop7h 55m
Southwest
Sa 5/168:30 am
SEA
- MHT
2 stops11h 35m
Southwest
Deal found 2/18![Southwest logo]()
$381
This United Airlines deal was found by Cheapflights users on 2/17. Clicking the “Pick Dates” 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.
Do 5/284:57 pm
BOS
- SEA
1 stop9h 13m
United Airlines
Sa 5/3010:40 pm
SEA
- BOS
1 stop7h 59m
United Airlines
Deal found 2/17![United Airlines logo]()
$292
This Delta deal was found by Cheapflights users on 2/19. Clicking the “Pick Dates” 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.
So 3/225:30 am
BOS
- SEA
1 stop8h 03m
Delta
So 3/2911:59 pm
SEA
- BOS
1 stop7h 56m
Delta
Deal found 2/19![Delta logo]()
$287
This Southwest deal was found by Cheapflights users on 2/17. Clicking the “Pick Dates” 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.
Mo 4/63:10 pm
MHT
- SEA
2 stops12h 20m
Southwest
Do 4/95:15 am
SEA
- MHT
1 stop7h 45m
Southwest
Deal found 2/17![Southwest logo]()
$390
This Southwest deal was found by Cheapflights users on 2/17. Clicking the “Pick Dates” 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.
Mo 3/233:10 pm
MHT
- SEA
2 stops12h 20m
Southwest
Do 3/2611:55 pm
SEA
- MHT
2 stops9h 35m
Southwest
Deal found 2/17![Southwest logo]()
$395
This Delta deal was found by Cheapflights users on 2/19. Clicking the “Pick Dates” 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.
Mi 6/103:30 pm
BOS
- SEA
Nonstop6h 30m
Delta
Mi 6/1711:50 am
SEA
- BOS
Nonstop5h 40m
Delta
Deal found 2/19![Delta logo]()
$297
This Delta deal was found by Cheapflights users on 2/19. Clicking the “Pick Dates” 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.
Di 5/263:55 pm
BOS
- SEA
Nonstop6h 10m
Delta
Sa 5/307:15 am
SEA
- BOS
Nonstop5h 34m
Delta
Deal found 2/19![Delta logo]()
$297
This Southwest deal was found by Cheapflights users on 2/19. Clicking the “Pick Dates” 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.
Do 4/27:20 am
MHT
- SEA
1 stop8h 20m
Southwest
Mo 4/611:55 pm
SEA
- MHT
2 stops9h 15m
Southwest
Deal found 2/19![Southwest logo]()
$416
This Delta deal was found by Cheapflights users on 2/17. Clicking the “Pick Dates” 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.
Mo 4/137:37 am
BOS
- SEA
Nonstop6h 18m
Delta
Do 4/1611:45 am
SEA
- BOS
1 stop7h 31m
Delta
Deal found 2/17![Delta logo]()
$297
This American Airlines deal was found by Cheapflights users on 2/17. Clicking the “Pick Dates” 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.
Do 8/135:54 pm
MHT
- SEA
1 stop8h 56m
American Airlines
Fr 8/218:20 am
SEA
- MHT
1 stop7h 45m
American Airlines
Deal found 2/17![American Airlines logo]()
$437
This Expedia deal was found by Cheapflights users on 2/18. Clicking the “Pick Dates” 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.
Do 3/54:00 pm
LEB
- SEA
1 stop9h 00m
Multiple Airlines
Mo 3/910:40 pm
SEA
- LEB
1 stop8h 13m
Multiple Airlines
Deal found 2/18![Multiple Airlines logo]()
$600
This Southwest deal was found by Cheapflights users on 2/19. Clicking the “Pick Dates” 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.
Sa 4/252:10 pm
MHT
- SEA
2 stops11h 50m
Southwest
Sa 5/26:55 pm
SEA
- MHT
2 stops10h 10m
Southwest
Deal found 2/19![Southwest logo]()
$422
This Delta deal was found by Cheapflights users on 2/19. Clicking the “Pick Dates” 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.
Mi 7/157:05 am
BOS
- SEA
Nonstop6h 27m
Delta
Mi 7/223:55 pm
SEA
- BOS
Nonstop5h 28m
Delta
Deal found 2/19![Delta logo]()
$297
This Southwest deal was found by Cheapflights users on 2/17. Clicking the “Pick Dates” 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.
Mo 6/81:30 pm
MHT
- SEA
1 stop8h 00m
Southwest
Mo 6/159:25 pm
SEA
- MHT
1 stop8h 05m
Southwest
Deal found 2/17![Southwest logo]()
$432
This Delta deal was found by Cheapflights users on 2/17. Clicking the “Pick Dates” 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.
Di 5/55:50 am
BOS
- SEA
1 stop8h 05m
Delta
Di 5/2611:00 pm
SEA
- BOS
Nonstop5h 35m
Delta
Deal found 2/17![Delta logo]()
$297
Last-minute flights from New Hampshire to SeattleDiscover last-minute flight deals from New Hampshire to Seattle. Data last updated Februar 21, 2026 and is based on user searches.
Discover last-minute flight deals from New Hampshire to Seattle. Data last updated Februar 21, 2026 and is based on user searches.
This Delta deal was found by Cheapflights users on 2/20. Clicking the “Pick Dates” 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.
Do 2/262:35 pm
PWM
- SEA
1 stop8h 25m
Delta
Fr 2/2711:15 pm
SEA
- PWM
1 stop9h 45m
Delta
Deal found 2/20![Delta logo]()
$276
This United Airlines deal was found by Cheapflights users on 2/17. Clicking the “Pick Dates” 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.
Fr 2/275:45 am
PWM
- SEA
1 stop9h 04m
United Airlines
Di 3/312:43 pm
SEA
- PWM
1 stop7h 37m
United Airlines
Deal found 2/17![United Airlines logo]()
$241
This American Airlines deal was found by Cheapflights users on 2/21. Clicking the “Pick Dates” 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.
Fr 2/275:40 pm
PWM
- SEA
1 stop9h 44m
American Airlines
Di 3/310:57 pm
SEA
- PWM
1 stop10h 02m
American Airlines
Deal found 2/21![American Airlines logo]()
$263
This United Airlines deal was found by Cheapflights users on 2/21. Clicking the “Pick Dates” 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.
Fr 2/274:15 pm
PWM
- SEA
1 stop9h 28m
United Airlines
Mo 3/27:00 am
SEA
- PWM
2 stops13h 20m
United Airlines
Deal found 2/21![United Airlines logo]()
$281
This Alaska Airlines deal was found by Cheapflights users on 2/18. Clicking the “Pick Dates” 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.
Di 3/105:44 pm
BOS
- SEA
1 stop21h 12m
Alaska Airlines
Mi 3/113:42 pm
SEA
- BOS
Nonstop5h 17m
Alaska Airlines
Deal found 2/18![Alaska Airlines logo]()
$272
This United Airlines deal was found by Cheapflights users on 2/19. Clicking the “Pick Dates” 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.
Do 3/1212:10 pm
BOS
- SEA
1 stop9h 53m
United Airlines
Mo 3/1611:59 pm
SEA
- BOS
1 stop7h 51m
United Airlines
Deal found 2/19![United Airlines logo]()
$268
This Delta deal was found by Cheapflights users on 2/19. Clicking the “Pick Dates” 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.
Fr 3/137:10 am
BOS
- SEA
Nonstop6h 25m
Delta
Mi 3/183:45 pm
SEA
- BOS
Nonstop5h 14m
Delta
Deal found 2/19![Delta logo]()
$267
This Delta deal was found by Cheapflights users on 2/19. Clicking the “Pick Dates” 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.
Fr 3/137:10 am
BOS
- SEA
Nonstop6h 25m
Delta
Di 3/177:35 pm
SEA
- BOS
1 stop7h 35m
Delta
Deal found 2/19![Delta logo]()
$277
This Delta deal was found by Cheapflights users on 2/19. Clicking the “Pick Dates” 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.
Mi 3/189:05 am
BOS
- SEA
1 stop8h 15m
Delta
Di 3/246:05 pm
SEA
- BOS
2 stops13h 50m
Delta
Deal found 2/19![Delta logo]()
$265
This American Airlines deal was found by Cheapflights users on 2/21. Clicking the “Pick Dates” 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.
Do 3/195:31 pm
BOS
- SEA
1 stop9h 53m
American Airlines
Mo 3/2310:08 pm
SEA
- BOS
1 stop9h 49m
American Airlines
Deal found 2/21![American Airlines logo]()
$257
This Delta deal was found by Cheapflights users on 2/20. Clicking the “Pick Dates” 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.
Fr 3/206:45 pm
BOS
- SEA
Nonstop6h 25m
Delta
Di 3/246:05 pm
SEA
- BOS
2 stops13h 50m
Delta
Deal found 2/20![Delta logo]()
$260
This Southwest deal was found by Cheapflights users on 2/17. Clicking the “Pick Dates” 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.
Di 3/313:15 pm
BOS
- SEA
2 stops11h 40m
Southwest
Di 4/711:45 pm
SEA
- BOS
2 stops9h 30m
Southwest
Deal found 2/17![Southwest logo]()
$278
One-way flights from New Hampshire to SeattleSearch for one-way flight options from New Hampshire to Seattle. Find affordable one-way fares based on user searches. Data last updated Februar 21, 2026.
Search for one-way flight options from New Hampshire to Seattle. Find affordable one-way fares based on user searches. Data last updated Februar 21, 2026.
This United Airlines deal was found by Cheapflights users on 2/17. Clicking the “Pick Dates” 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.
Fr 5/14:45 pm
PWM
- SEA
1 stop10h 12m
United Airlines
Deal found 2/17![United Airlines logo]()
$121
This United Airlines deal was found by Cheapflights users on 2/20. Clicking the “Pick Dates” 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.
Fr 2/276:00 am
PWM
- SEA
2 stops12h 41m
United Airlines
Deal found 2/20![United Airlines logo]()
$126
This Delta deal was found by Cheapflights users on 2/17. Clicking the “Pick Dates” 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.
Fr 5/14:43 pm
PWM
- SEA
2 stops10h 11m
Delta
Deal found 2/17![Delta logo]()
$136
This Kiwi.com deal was found by Cheapflights users on 2/17. Clicking the “Pick Dates” 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.
Sa 5/169:50 am
BOS
- SEA
2 stops26h 37m
Multiple Airlines
Deal found 2/17![Multiple Airlines logo]()
$141
This Kiwi.com deal was found by Cheapflights users on 2/20. Clicking the “Pick Dates” 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.
Di 4/216:00 am
BOS
- SEA
2 stops30h 27m
Frontier
Deal found 2/20![Frontier logo]()
$142
This Southwest deal was found by Cheapflights users on 2/19. Clicking the “Pick Dates” 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.
Di 3/312:00 pm
BOS
- SEA
2 stops11h 30m
Southwest
Deal found 2/19![Southwest logo]()
$144
This Kiwi.com deal was found by Cheapflights users on 2/17. Clicking the “Pick Dates” 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.
Fr 5/84:08 pm
BOS
- SEA
2 stops20h 19m
Multiple Airlines
Deal found 2/17![Multiple Airlines logo]()
$146
This Kiwi.com deal was found by Cheapflights users on 2/18. Clicking the “Pick Dates” 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.
Di 3/103:54 pm
BOS
- SEA
3 stops28h 15m
Multiple Airlines
Deal found 2/18![Multiple Airlines logo]()
$148
This Alaska Airlines deal was found by Cheapflights users on 2/20. Clicking the “Pick Dates” 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.
Fr 3/136:24 pm
BOS
- SEA
Nonstop6h 36m
Alaska Airlines
Deal found 2/20![Alaska Airlines logo]()
$149
This United Airlines deal was found by Cheapflights users on 2/19. Clicking the “Pick Dates” 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.
Mi 3/1812:07 pm
BOS
- SEA
2 stops13h 38m
United Airlines
Deal found 2/19![United Airlines logo]()
$150
This Kiwi.com deal was found by Cheapflights users on 2/18. Clicking the “Pick Dates” 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.
Mi 4/227:53 pm
BOS
- SEA
2 stops46h 12m
Multiple Airlines
Deal found 2/18![Multiple Airlines logo]()
$151
This Kiwi.com deal was found by Cheapflights users on 2/17. Clicking the “Pick Dates” 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.
Mi 3/1811:51 am
BOS
- SEA
2 stops26h 28m
Frontier
Deal found 2/17![Frontier logo]()
$153
Find flight deals from New Hampshire to Seattle
Keep the following information in mind while searching for New Hampshire to Seattle flight deals. Data was last updated Februar 21, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $241 (United Airlines) |
One-way from | $121 (United Airlines) |
Popular in | December |
Cheapest in | March |
Average price | $370 |
Cheapflights Fare Finder
Customize your flight search to find flights from New Hampshire 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 Februar 21, 2026.
Use the filters below to find and compare flights from New Hampshire to Seattle that are best for you.
Fly from
New Hampshire
Fly to
Seattle
Route
Depart
Return
Price
PortlandSeattle
PWM - SEA
PWMSEA
Portland
Mi 3/11
3:44 pm-10:53 pm
1 stop10h 09m
Seattle/Tacoma Intl
Di 3/24
11:59 pm-10:49 am
1 stop7h 50m
$241
PortlandSeattle
PWM - SEA
PWMSEA
Portland
Di 4/7
7:07 am-2:27 pm
1 stop10h 20m
Seattle/Tacoma Intl
Mi 4/8
7:00 am-5:31 pm
1 stop7h 31m
$241
PortlandSeattle
PWM - SEA
PWMSEA
Portland
Fr 5/8
4:45 pm-11:57 pm
1 stop10h 12m
Seattle/Tacoma Intl
Di 5/19
8:00 am-7:04 pm
1 stop8h 04m
$241
PortlandSeattle
PWM - SEA
PWMSEA
Portland
Sa 4/25
3:40 pm-12:30 am
2 stops11h 50m
Seattle/Tacoma Intl
Sa 5/2
10:47 pm-10:23 am
1 stop8h 36m
$246
BostonSeattle
BOS - SEA
BOSSEA
Boston Logan Intl
Fr 3/13
6:50 pm-10:10 pm
Nonstop6h 20m
Seattle/Tacoma Intl
Do 3/26
10:25 pm-6:50 am
Nonstop5h 25m
$267
BostonSeattle
BOS - SEA
BOSSEA
Boston Logan Intl
Mi 3/11
6:00 pm-11:55 pm
1 stop8h 55m
Seattle/Tacoma Intl
Mi 3/18
11:55 pm-11:10 am
1 stop8h 15m
$267
BostonSeattle
BOS - SEA
BOSSEA
Boston Logan Intl
Mo 4/13
6:45 pm-10:05 pm
Nonstop6h 20m
Seattle/Tacoma Intl
So 4/19
10:35 pm-6:55 am
Nonstop5h 20m
$267
BostonSeattle
BOS - SEA
BOSSEA
Boston Logan Intl
Mo 3/30
7:10 am-10:37 am
Nonstop6h 27m
Seattle/Tacoma Intl
Fr 4/3
3:45 pm-11:59 pm
Nonstop5h 14m
$267
PortlandSeattle
PWM - SEA
PWMSEA
Portland
Mi 5/13
4:48 pm-10:28 pm
1 stop8h 40m
Seattle/Tacoma Intl
Di 5/19
9:35 am-12:34 am
2 stops11h 59m
$275
BostonSeattle
BOS - SEA
BOSSEA
Boston Logan Intl
Mo 3/30
7:10 am-10:37 am
Nonstop6h 27m
Seattle/Tacoma Intl
Do 4/2
4:55 pm-6:10 am
1 stop10h 15m
$277
Showing 1-10 of 60 results
Best time to book a flight from New Hampshire to Seattle
Have a flexible travel schedule? Discover the best time to fly to Seattle from New Hampshire with our price prediction graph.
PWM-SEA
BOS-SEA
MHT-SEA
LEB-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 New Hampshire to Seattle
USNH-SEA
PWM-SEA
BOS-SEA
MHT-SEA
LEB-SEA
What is the cheapest month to book a flight from New Hampshire to Seattle?
Currently, October is the cheapest month in which you can book a flight from New Hampshire to Seattle (average of $218). Flying from New Hampshire to Seattle in December is currently the most expensive (average of $486). 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.
Related info for your journey
Find useful and relevant information for your journey from New Hampshire 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 locationsTacoma
SeaTac
Lakewood
Ocean Shores
Olympia
Kent
Lynnwood
Edmonds
Lacey
Renton
Puyallup
Kirkland
Tukwila
Fife
Aberdeen
Shoreline
Marysville
Centralia
Federal Way
Chehalis
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 New Hampshire 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 New Hampshire to Seattle by cabin class
Find flights from New Hampshire to Seattle, based on your preferred cabin class, be it economy, premium economy, business, or first class.
New Hampshire and Seattle flights
Browse other New Hampshire and Seattle flight options. Last updated on Februar 21, 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 Februar 21, 2026.
New Hampshire to Seattle flights
Consider these flights traveling from New Hampshire to Seattle.
Top 4 airlines flying from New Hampshire to Seattle
Discover the top 4 airlines that operate flights from New Hampshire 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 Februar 21, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$326 | Average$542 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$342 | Average$422 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$347 | Average$796 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$379 | Average$446 | FlexibilityNo cancel fee | On-time63% |