$121+ Cheap flights from Seattle (SEA) to New Hampshire
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 3/17. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — MHT
mar 22 — mar 291
1 adult, Economy
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Find cheap flights from Seattle to New Hampshire with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
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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 Seattle to New Hampshire
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Cheapest flights from Seattle to New HampshireExplore the most affordable flight options available from Seattle to New Hampshire. Find the lowest fares from popular airlines and budget airlines, with prices last updated on fevereiro 20, 2026.
Explore the most affordable flight options available from Seattle to New Hampshire. Find the lowest fares from popular airlines and budget airlines, with prices last updated on fevereiro 20, 2026.
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.
ter 3/310:55 am
SEA
- PWM
1 stop7h 14m
United Airlines
ter 3/103:44 pm
PWM
- SEA
1 stop10h 09m
United Airlines
Deal found 2/20![United Airlines logo]()
$241
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.
sáb 5/233:30 pm
SEA
- BOS
Nonstop5h 29m
Alaska Airlines
qua 5/276:00 am
BOS
- SEA
1 stop8h 59m
Alaska Airlines
Deal found 2/20![Alaska Airlines logo]()
$247
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.
ter 3/38:30 am
SEA
- PWM
2 stops11h 36m
Delta
ter 3/105:23 am
PWM
- SEA
2 stops16h 05m
Delta
Deal found 2/20![Delta logo]()
$251
This Cheapflightsfares 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
qui 5/1411:30 am
SEA
- BOS
Nonstop5h 35m
JetBlue
ter 5/267:00 am
BOS
- SEA
Nonstop6h 20m
JetBlue
Deal found 2/20![JetBlue logo]()
$251
This CheapOair 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ter 5/199:34 am
SEA
- BOS
Nonstop5h 37m
Alaska Airlines
qui 5/287:11 pm
BOS
- SEA
Nonstop6h 16m
Alaska Airlines
Deal found 2/20![Alaska Airlines logo]()
$252
This Cheapflightsfares 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
qui 5/1411:30 am
SEA
- BOS
Nonstop5h 35m
JetBlue
ter 5/197:00 am
BOS
- SEA
Nonstop6h 20m
JetBlue
Deal found 2/18![JetBlue logo]()
$256
This 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
seg 4/206:00 am
SEA
- PWM
1 stop6h 57m
Delta
qua 5/62:51 pm
PWM
- SEA
1 stop10h 40m
Delta
Deal found 2/20![Delta logo]()
$259
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.
qua 3/181:37 pm
SEA
- BOS
1 stop7h 28m
American Airlines
qua 3/255:31 pm
BOS
- SEA
1 stop9h 53m
American Airlines
Deal found 2/17![American Airlines 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.
ter 3/108:25 am
SEA
- PWM
2 stops11h 47m
Delta
ter 3/1711:45 am
PWM
- SEA
2 stops13h 30m
Delta
Deal found 2/17![Delta logo]()
$261
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.
ter 5/199:34 am
SEA
- BOS
Nonstop5h 37m
Alaska Airlines
sáb 5/236:40 pm
BOS
- SEA
1 stop17h 45m
Alaska Airlines
Deal found 2/20![Alaska Airlines logo]()
$262
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.
sex 4/33:45 pm
SEA
- BOS
Nonstop5h 14m
Delta
seg 4/66:45 pm
BOS
- SEA
Nonstop6h 25m
Delta
Deal found 2/20![Delta logo]()
$267
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.
qua 6/103:33 pm
SEA
- BOS
Nonstop5h 26m
Alaska Airlines
seg 6/157:00 pm
BOS
- SEA
Nonstop6h 29m
Alaska Airlines
Deal found 2/18![Alaska Airlines logo]()
$272
Best flights from Seattle to New HampshireDiscover carefully curated flight deals from Seattle to New Hampshire that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated fevereiro 20, 2026.
Discover carefully curated flight deals from Seattle to New Hampshire that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated fevereiro 20, 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.
qua 3/412:43 pm
SEA
- PWM
1 stop7h 37m
United Airlines
qua 3/113:44 pm
PWM
- SEA
1 stop10h 09m
United Airlines
Deal found 2/17![United Airlines logo]()
$241
This Alaska 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
qua 5/273:30 pm
SEA
- BOS
Nonstop5h 29m
Alaska Airlines
ter 6/26:00 am
BOS
- SEA
1 stop8h 59m
Alaska Airlines
Deal found 2/17![Alaska Airlines logo]()
$247
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.
qui 6/411:00 pm
SEA
- BOS
Nonstop5h 33m
Delta
ter 6/96:35 pm
BOS
- SEA
Nonstop6h 30m
Delta
Deal found 2/19![Delta logo]()
$272
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.
ter 5/126:25 pm
SEA
- MHT
2 stops10h 40m
Southwest
ter 5/193:45 pm
MHT
- SEA
2 stops11h 25m
Southwest
Deal found 2/18![Southwest logo]()
$369
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.
ter 3/312:43 pm
SEA
- PWM
1 stop7h 37m
United Airlines
ter 3/103:44 pm
PWM
- SEA
1 stop10h 09m
United Airlines
Deal found 2/17![United Airlines logo]()
$241
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.
qui 5/711:20 am
SEA
- PWM
1 stop10h 14m
Delta
qui 5/142:38 pm
PWM
- SEA
1 stop10h 51m
Delta
Deal found 2/20![Delta logo]()
$276
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.
qui 3/1910:15 pm
SEA
- BOS
Nonstop5h 24m
Alaska Airlines
seg 3/236:10 pm
BOS
- SEA
Nonstop6h 24m
Alaska Airlines
Deal found 2/18![Alaska Airlines logo]()
$297
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.
sáb 3/79:33 pm
SEA
- LEB
1 stop8h 20m
Multiple Airlines
qua 3/112:09 pm
LEB
- SEA
1 stop10h 51m
Multiple Airlines
Deal found 2/20![Multiple Airlines logo]()
$600
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.
seg 4/206:00 am
SEA
- PWM
1 stop6h 57m
Delta
ter 5/124:48 pm
PWM
- SEA
1 stop8h 40m
Delta
Deal found 2/18![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.
qua 3/117:10 pm
SEA
- PWM
2 stops12h 39m
United Airlines
ter 3/174:23 pm
PWM
- SEA
1 stop9h 22m
United Airlines
Deal found 2/17![United Airlines logo]()
$302
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.
seg 4/206:00 am
SEA
- PWM
1 stop6h 57m
Delta
qua 5/64:43 pm
PWM
- SEA
1 stop8h 06m
Delta
Deal found 2/18![Delta logo]()
$276
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.
qua 3/187:35 pm
SEA
- BOS
1 stop7h 35m
Delta
sex 3/276:45 pm
BOS
- SEA
Nonstop6h 25m
Delta
Deal found 2/17![Delta logo]()
$277
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.
sáb 3/2812:25 pm
SEA
- PWM
1 stop7h 27m
United Airlines
ter 3/316:04 am
PWM
- SEA
1 stop8h 44m
United Airlines
Deal found 2/18![United Airlines logo]()
$320
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.
seg 3/3011:55 pm
SEA
- MHT
2 stops9h 00m
Southwest
qui 4/23:10 pm
MHT
- SEA
2 stops13h 15m
Southwest
Deal found 2/19![Southwest logo]()
$395
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.
qua 4/17:35 pm
SEA
- BOS
1 stop7h 35m
Delta
qua 4/157:37 am
BOS
- SEA
Nonstop6h 18m
Delta
Deal found 2/17![Delta logo]()
$277
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.
sáb 5/911:55 pm
SEA
- MHT
1 stop7h 45m
Southwest
dom 5/107:00 pm
MHT
- SEA
1 stop8h 10m
Southwest
Deal found 2/19![Southwest logo]()
$402
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.
qua 3/257:15 am
SEA
- BOS
1 stop11h 07m
Delta
sáb 3/289:40 am
BOS
- SEA
Nonstop6h 20m
Delta
Deal found 2/18![Delta logo]()
$277
This Delta deal was found by Cheapflights users on 2/16. Clicking the “Pick Dates” 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.
qua 3/257:15 am
SEA
- BOS
1 stop11h 07m
Delta
seg 3/307:10 am
BOS
- SEA
Nonstop6h 27m
Delta
Deal found 2/16![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.
sex 5/85:15 am
SEA
- MHT
1 stop7h 45m
Southwest
seg 5/117:10 pm
MHT
- SEA
1 stop7h 55m
Southwest
Deal found 2/18![Southwest logo]()
$411
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.
ter 3/176:00 am
SEA
- BOS
1 stop7h 25m
Delta
sáb 3/285:35 am
BOS
- SEA
1 stop9h 10m
Delta
Deal found 2/17![Delta logo]()
$287
This Expedia 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
qui 3/510:40 pm
SEA
- LEB
1 stop8h 13m
Multiple Airlines
seg 3/92:09 pm
LEB
- SEA
1 stop10h 51m
Multiple Airlines
Deal found 2/17![Multiple Airlines logo]()
$600
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.
qua 5/1311:45 am
SEA
- BOS
1 stop8h 06m
Delta
sáb 5/237:45 am
BOS
- SEA
Nonstop6h 07m
Delta
Deal found 2/17![Delta logo]()
$297
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.
ter 6/211:00 pm
SEA
- BOS
Nonstop5h 33m
Delta
sex 6/53:55 pm
BOS
- SEA
Nonstop6h 08m
Delta
Deal found 2/17![Delta logo]()
$297
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.
qua 5/2011:45 am
SEA
- BOS
1 stop8h 06m
Delta
qui 5/217:30 pm
BOS
- SEA
Nonstop6h 09m
Delta
Deal found 2/18![Delta logo]()
$297
This Expedia 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sex 4/310:15 pm
SEA
- LEB
1 stop8h 38m
Multiple Airlines
sex 4/102:09 pm
LEB
- SEA
1 stop10h 25m
Multiple Airlines
Deal found 2/17![Multiple Airlines logo]()
$711
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.
qua 3/113:45 pm
SEA
- BOS
Nonstop5h 14m
Delta
qua 3/187:10 am
BOS
- SEA
Nonstop6h 27m
Delta
Deal found 2/19![Delta logo]()
$297
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.
qua 3/119:55 am
SEA
- PWM
2 stops10h 27m
Delta
ter 3/1711:45 am
PWM
- SEA
2 stops13h 30m
Delta
Deal found 2/17![Delta logo]()
$310
Last-minute flights from Seattle to New HampshireDiscover last-minute flight deals from Seattle to New Hampshire. Data last updated fevereiro 20, 2026 and is based on user searches.
Discover last-minute flight deals from Seattle to New Hampshire. Data last updated fevereiro 20, 2026 and is based on user searches.
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.
ter 3/310:55 am
SEA
- PWM
1 stop7h 14m
United Airlines
ter 3/103:44 pm
PWM
- SEA
1 stop10h 09m
United Airlines
Deal found 2/20![United Airlines logo]()
$241
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.
ter 3/38:30 am
SEA
- PWM
2 stops11h 50m
Delta
ter 3/102:30 pm
PWM
- SEA
1 stop10h 50m
Delta
Deal found 2/20![Delta logo]()
$246
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.
ter 3/108:25 am
SEA
- PWM
2 stops11h 47m
Delta
ter 3/1711:45 am
PWM
- SEA
2 stops13h 30m
Delta
Deal found 2/17![Delta logo]()
$261
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.
qua 3/1111:59 pm
SEA
- PWM
1 stop7h 50m
United Airlines
ter 3/174:23 pm
PWM
- SEA
1 stop9h 22m
United Airlines
Deal found 2/17![United Airlines logo]()
$276
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.
qui 3/127:15 am
SEA
- BOS
1 stop11h 07m
Delta
qua 3/183:10 pm
BOS
- SEA
1 stop21h 49m
Delta
Deal found 2/19![Delta logo]()
$285
This American 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ter 3/1712:07 am
SEA
- BOS
1 stop7h 39m
American Airlines
qua 3/255:31 pm
BOS
- SEA
1 stop9h 53m
American Airlines
Deal found 2/19![American Airlines logo]()
$257
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.
qui 3/193:45 pm
SEA
- BOS
Nonstop5h 14m
Delta
seg 3/237:10 am
BOS
- SEA
Nonstop6h 27m
Delta
Deal found 2/17![Delta logo]()
$267
This CheapOair 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
qui 3/193:38 pm
SEA
- BOS
Nonstop5h 21m
Alaska Airlines
ter 3/249:00 am
BOS
- SEA
Nonstop6h 25m
Alaska Airlines
Deal found 2/17![Alaska Airlines logo]()
$283
This Southwest 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
qua 3/255:30 am
SEA
- BOS
1 stop6h 50m
Southwest
qua 4/12:00 pm
BOS
- SEA
2 stops13h 20m
Southwest
Deal found 2/20![Southwest logo]()
$262
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.
qua 3/253:45 pm
SEA
- BOS
Nonstop5h 14m
Delta
qua 4/227:56 pm
BOS
- SEA
1 stop15h 54m
Delta
Deal found 2/20![Delta logo]()
$275
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.
qua 3/257:20 am
SEA
- BOS
1 stop8h 07m
Delta
sáb 3/286:45 pm
BOS
- SEA
Nonstop6h 25m
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.
ter 3/315:30 am
SEA
- BOS
1 stop6h 50m
Southwest
ter 4/77:20 am
BOS
- SEA
2 stops12h 35m
Southwest
Deal found 2/18![Southwest logo]()
$272
One-way flights from Seattle to New HampshireSearch for one-way flight options from Seattle to New Hampshire. Find affordable one-way fares based on user searches. Data last updated fevereiro 20, 2026.
Search for one-way flight options from Seattle to New Hampshire. Find affordable one-way fares based on user searches. Data last updated fevereiro 20, 2026.
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.
sex 7/311:53 pm
SEA
- PWM
1 stop7h 56m
Delta
Deal found 2/19![Delta 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.
sex 2/2711:59 pm
SEA
- PWM
2 stops11h 24m
United Airlines
Deal found 2/20![United Airlines logo]()
$126
This CheapOair 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom 5/178:45 am
SEA
- BOS
1 stop18h 35m
Alaska Airlines
Deal found 2/17![Alaska Airlines logo]()
$134
This Kiwi.com 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
seg 5/114:20 pm
SEA
- BOS
2 stops16h 45m
Frontier
Deal found 2/19![Frontier logo]()
$135
This Kiwi.com 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
seg 4/139:34 pm
SEA
- BOS
2 stops39h 54m
Multiple Airlines
Deal found 2/19![Multiple Airlines logo]()
$138
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.
qua 4/156:30 am
SEA
- BOS
2 stops9h 05m
Southwest
Deal found 2/17![Southwest logo]()
$139
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.
qua 4/1510:42 am
SEA
- BOS
2 stops20h 39m
Frontier
Deal found 2/17![Frontier logo]()
$142
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.
ter 3/176:00 am
SEA
- PWM
2 stops14h 12m
Delta
Deal found 2/18![Delta logo]()
$144
This Southwest 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
qua 4/296:30 am
SEA
- BOS
2 stops9h 05m
Southwest
Deal found 2/20![Southwest logo]()
$144
This Kiwi.com 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ter 4/217:12 pm
SEA
- BOS
2 stops27h 19m
Frontier
Deal found 2/19![Frontier logo]()
$145
This Trip.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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb 4/410:15 pm
SEA
- BOS
Nonstop5h 24m
Hawaiian Airlines
Deal found 2/18![Hawaiian Airlines logo]()
$148
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.
qui 4/210:57 pm
SEA
- BOS
1 stop7h 32m
American Airlines
Deal found 2/18![American Airlines logo]()
$149
Find flight deals from Seattle to New Hampshire
Keep the following information in mind while searching for Seattle to New Hampshire flight deals. Data was last updated fevereiro 20, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $241 (United Airlines) |
One-way from | $121 (Delta) |
Popular in | December |
Cheapest in | March |
Average price | $363 |
Cheapflights Fare Finder
Customize your flight search to find flights from Seattle to New Hampshire 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 fevereiro 20, 2026.
Use the filters below to find and compare flights from Seattle to New Hampshire that are best for you.
Fly from
Seattle
Fly to
New Hampshire
Route
Depart
Return
Price
SeattlePortland
SEA - PWM
SEAPWM
Seattle/Tacoma Intl
qua 3/4
12:43 pm-11:20 pm
1 stop7h 37m
Portland
qua 3/11
3:44 pm-10:53 pm
1 stop10h 09m
$241
SeattlePortland
SEA - PWM
SEAPWM
Seattle/Tacoma Intl
ter 3/3
12:43 pm-11:20 pm
1 stop7h 37m
Portland
ter 3/10
3:44 pm-10:53 pm
1 stop10h 09m
$241
SeattleBoston
SEA - BOS
SEABOS
Seattle/Tacoma Intl
qua 5/27
3:30 pm-11:59 pm
Nonstop5h 29m
Boston Logan Intl
ter 6/2
6:00 am-11:59 am
1 stop8h 59m
$247
SeattleBoston
SEA - BOS
SEABOS
Seattle/Tacoma Intl
qui 6/4
11:00 pm-7:33 am
Nonstop5h 33m
Boston Logan Intl
ter 6/9
6:35 pm-10:05 pm
Nonstop6h 30m
$272
SeattlePortland
SEA - PWM
SEAPWM
Seattle/Tacoma Intl
qui 5/7
11:20 am-12:34 am
1 stop10h 14m
Portland
qui 5/14
2:38 pm-10:29 pm
1 stop10h 51m
$276
SeattlePortland
SEA - PWM
SEAPWM
Seattle/Tacoma Intl
seg 4/20
6:00 am-3:57 pm
1 stop6h 57m
Portland
ter 5/12
4:48 pm-10:28 pm
1 stop8h 40m
$276
SeattlePortland
SEA - PWM
SEAPWM
Seattle/Tacoma Intl
seg 4/20
6:00 am-3:57 pm
1 stop6h 57m
Portland
qua 5/6
4:43 pm-9:49 pm
1 stop8h 06m
$276
SeattleBoston
SEA - BOS
SEABOS
Seattle/Tacoma Intl
qua 3/18
7:35 pm-6:10 am
1 stop7h 35m
Boston Logan Intl
sex 3/27
6:45 pm-10:10 pm
Nonstop6h 25m
$277
SeattleBoston
SEA - BOS
SEABOS
Seattle/Tacoma Intl
qua 4/1
7:35 pm-6:10 am
1 stop7h 35m
Boston Logan Intl
qua 4/15
7:37 am-10:55 am
Nonstop6h 18m
$277
SeattleBoston
SEA - BOS
SEABOS
Seattle/Tacoma Intl
qua 3/25
7:15 am-9:22 pm
1 stop11h 07m
Boston Logan Intl
sáb 3/28
9:40 am-1:00 pm
Nonstop6h 20m
$277
Showing 1-10 of 57 results
Best time to book a flight from Seattle to New Hampshire
Have a flexible travel schedule? Discover the best time to fly to New Hampshire from Seattle with our price prediction graph.
SEA-PWM
SEA-BOS
SEA-LEB
SEA-MHT
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 Seattle to New Hampshire
SEA-USNH
SEA-PWM
SEA-BOS
SEA-LEB
SEA-MHT
What is the cheapest month to book a flight from Seattle to New Hampshire?
Currently, September is the cheapest month in which you can book a flight from Seattle to New Hampshire (average of $137). Flying from Seattle to New Hampshire in February is currently the most expensive (average of $495). 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.
How much does it cost to fly round-trip from Seattle to New Hampshire?
Reviews of airlines servicing New Hampshire
Get insights into the airlines that provide service to New Hampshire. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to New Hampshire. Reviews last updated fevereiro 20, 2026.
Read reviews from past customers who have flown Southwest, United Airlines, and American Airlines from Seattle to New Hampshire. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Crew
8.6
Overall
8.0
Comfort
8.0
Entertainment
7.5
Food
7.0
Boarding
8.1
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Crew
8.6
Overall
8.0
Comfort
8.0
Entertainment
7.5
Food
7.0
Boarding
8.1
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Crew
8.6
Overall
8.0
Comfort
8.0
Entertainment
7.5
Food
7.0
Boarding
8.1
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Crew
8.6
Overall
8.0
Comfort
8.0
Entertainment
7.5
Food
7.0
Boarding
8.1
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Related info for your journey
Find useful and relevant information for your journey from Seattle to New Hampshire. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
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Alternative routes for Seattle to New Hampshire
See prices for flight routes from nearby airports that may be better suited for you.
Complete your trip
Complete your trip to New Hampshire by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Seattle to New Hampshire by cabin class
Find flights from Seattle to New Hampshire, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Seattle and New Hampshire flights
Browse other Seattle and New Hampshire flight options. Last updated on fevereiro 20, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Seattle to New Hampshire flights
Consider these flights traveling from Seattle to New Hampshire.
Top 3 airlines flying from Seattle to New Hampshire
Discover the top 3 airlines that operate flights from Seattle to New Hampshire. 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 fevereiro 20, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$328 | Average$429 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$333 | Average$543 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$377 | Average$516 | FlexibilityNo cancel fee | On-time63% |