$156+ 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 7/4. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — MHT
Jul 26 — Aug 21
Round-trip
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
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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 June 26, 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 June 26, 2026.
This American Airlines deal was found by Cheapflights users on 6/25. Clicking the “Pick Dates” 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.
Sun 8/3010:28 pm
SEA
- BOS
1 stop7h 18m
American Airlines
Sat 9/53:20 pm
BOS
- SEA
1 stop10h 36m
American Airlines
Deal found 6/25![American Airlines logo]()
$310
This Alaska Airlines deal was found by Cheapflights users on 6/23. Clicking the “Pick Dates” 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 9/2211:06 pm
SEA
- BOS
Nonstop5h 33m
Alaska Airlines
Wed 9/2310:03 am
BOS
- SEA
Nonstop6h 12m
Alaska Airlines
Deal found 6/23![Alaska Airlines logo]()
$312
This Cheapflightsfares deal was found by Cheapflights users on 6/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/169:40 pm
SEA
- BOS
1 stop10h 06m
JetBlue
Sun 9/206:59 pm
BOS
- SEA
Nonstop6h 39m
JetBlue
Deal found 6/26![JetBlue logo]()
$313
This JetBlue deal was found by Cheapflights users on 6/23. Clicking the “Pick Dates” 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.
Wed 8/2611:45 pm
SEA
- BOS
Nonstop5h 19m
JetBlue
Tue 9/112:57 pm
BOS
- SEA
1 stop11h 11m
JetBlue
Deal found 6/23![JetBlue logo]()
$315
This Delta deal was found by Cheapflights users on 6/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/111:13 pm
SEA
- BOS
Nonstop5h 22m
Delta
Wed 9/97:45 pm
BOS
- SEA
Nonstop6h 15m
Delta
Deal found 6/25![Delta logo]()
$317
This American Airlines deal was found by Cheapflights users on 6/24. Clicking the “Pick Dates” 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.
Mon 7/135:10 am
SEA
- BOS
1 stop9h 54m
American Airlines
Tue 8/113:20 pm
BOS
- SEA
1 stop10h 36m
American Airlines
Deal found 6/24![American Airlines logo]()
$320
This JetBlue deal was found by Cheapflights users on 6/22. Clicking the “Pick Dates” 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 9/159:40 pm
SEA
- BOS
1 stop10h 06m
JetBlue
Mon 9/216:59 pm
BOS
- SEA
Nonstop6h 39m
JetBlue
Deal found 6/22![JetBlue logo]()
$321
This Alaska Airlines deal was found by Cheapflights users on 6/25. Clicking the “Pick Dates” 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.
Wed 9/96:51 pm
SEA
- BOS
1 stop8h 18m
Alaska Airlines
Tue 9/297:12 am
BOS
- SEA
Nonstop6h 13m
Alaska Airlines
Deal found 6/25![Alaska Airlines logo]()
$322
This lol.travel deal was found by Cheapflights users on 6/24. Clicking the “Pick Dates” 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.
Mon 7/1311:46 pm
SEA
- BOS
Nonstop5h 18m
JetBlue
Tue 7/217:10 am
BOS
- SEA
Nonstop6h 23m
JetBlue
Deal found 6/24![JetBlue logo]()
$323
This Cheapflightsfares deal was found by Cheapflights users on 6/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/2511:45 pm
SEA
- BOS
Nonstop5h 19m
JetBlue
Tue 9/112:57 pm
BOS
- SEA
1 stop11h 11m
JetBlue
Deal found 6/26![JetBlue logo]()
$324
This Orbitz deal was found by Cheapflights users on 6/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/256:52 pm
SEA
- BOS
1 stop8h 17m
Multiple Airlines
Wed 9/212:57 pm
BOS
- SEA
1 stop11h 11m
Multiple Airlines
Deal found 6/25![Multiple Airlines logo]()
$325
This American Airlines deal was found by Cheapflights users on 6/24. Clicking the “Pick Dates” 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 9/308:20 am
SEA
- MHT
1 stop7h 44m
American Airlines
Tue 10/66:00 am
MHT
- SEA
1 stop8h 40m
American Airlines
Deal found 6/24![American Airlines logo]()
$355
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 June 26, 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 June 26, 2026.
This Delta deal was found by Cheapflights users on 6/24. Clicking the “Pick Dates” 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 7/154:00 pm
SEA
- BOS
Nonstop5h 14m
Delta
Tue 7/217:29 pm
BOS
- SEA
Nonstop6h 33m
Delta
Deal found 6/24![Delta logo]()
$317
This Southwest deal was found by Cheapflights users on 6/25. Clicking the “Pick Dates” 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 10/226:40 pm
SEA
- BOS
1 stop9h 10m
Southwest
Mon 10/265:00 am
BOS
- SEA
1 stop11h 35m
Southwest
Deal found 6/25![Southwest logo]()
$328
This JetBlue deal was found by Cheapflights users on 6/21. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/1311:46 pm
SEA
- BOS
Nonstop5h 18m
JetBlue
Tue 7/217:10 am
BOS
- SEA
Nonstop6h 23m
JetBlue
Deal found 6/21![JetBlue logo]()
$350
This Alaska Airlines deal was found by Cheapflights users on 6/23. Clicking the “Pick Dates” 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 8/256:52 pm
SEA
- BOS
1 stop8h 17m
Alaska Airlines
Wed 9/28:00 am
BOS
- SEA
1 stop12h 51m
Alaska Airlines
Deal found 6/23![Alaska Airlines logo]()
$357
This United Airlines deal was found by Cheapflights users on 6/22. Clicking the “Pick Dates” 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 10/68:10 am
SEA
- MHT
1 stop7h 51m
United Airlines
Sat 10/109:25 am
MHT
- SEA
2 stops14h 50m
United Airlines
Deal found 6/22![United Airlines logo]()
$360
This Expedia deal was found by Cheapflights users on 6/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/1711:45 pm
SEA
- LEB
1 stop7h 17m
Multiple Airlines
Mon 8/317:06 am
LEB
- SEA
2 stops17h 02m
Multiple Airlines
Deal found 6/25![Multiple Airlines logo]()
$666
This Southwest deal was found by Cheapflights users on 6/21. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/1111:00 pm
SEA
- BOS
1 stop11h 35m
Southwest
Sat 8/291:00 pm
BOS
- SEA
2 stops11h 30m
Southwest
Deal found 6/21![Southwest logo]()
$338
This Delta deal was found by Cheapflights users on 6/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/111:13 pm
SEA
- BOS
Nonstop5h 22m
Delta
Fri 9/47:35 pm
BOS
- SEA
Nonstop6h 36m
Delta
Deal found 6/25![Delta logo]()
$352
This Southwest deal was found by Cheapflights users on 6/25. Clicking the “Pick Dates” 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 10/512:15 am
SEA
- BOS
2 stops10h 40m
Southwest
Tue 10/135:15 am
BOS
- SEA
1 stop8h 30m
Southwest
Deal found 6/25![Southwest logo]()
$347
This Delta deal was found by Cheapflights users on 6/25. Clicking the “Pick Dates” 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 8/2011:13 pm
SEA
- BOS
Nonstop5h 22m
Delta
Sat 8/296:45 pm
BOS
- SEA
Nonstop6h 35m
Delta
Deal found 6/25![Delta logo]()
$352
This United Airlines deal was found by Cheapflights users on 6/22. Clicking the “Pick Dates” 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.
Mon 10/58:10 am
SEA
- MHT
1 stop7h 51m
United Airlines
Fri 10/169:25 am
MHT
- SEA
2 stops12h 27m
United Airlines
Deal found 6/22![United Airlines logo]()
$424
This Southwest deal was found by Cheapflights users on 6/21. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/1911:00 pm
SEA
- BOS
2 stops12h 55m
Southwest
Tue 8/252:45 pm
BOS
- SEA
2 stops11h 40m
Southwest
Deal found 6/21![Southwest logo]()
$352
This Delta deal was found by Cheapflights users on 6/23. Clicking the “Pick Dates” 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 9/57:38 am
SEA
- BOS
Nonstop5h 32m
Delta
Sat 11/217:05 am
BOS
- SEA
Nonstop6h 38m
Delta
Deal found 6/23![Delta logo]()
$357
This United Airlines deal was found by Cheapflights users on 6/21. 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.
Thu 8/279:05 am
SEA
- MHT
2 stops11h 54m
United Airlines
Sun 8/302:46 pm
MHT
- SEA
2 stops11h 18m
United Airlines
Deal found 6/21![United Airlines logo]()
$429
This Southwest deal was found by Cheapflights users on 6/22. Clicking the “Pick Dates” 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 9/25:20 am
SEA
- BOS
2 stops10h 15m
Southwest
Sun 9/67:55 am
BOS
- SEA
1 stop9h 20m
Southwest
Deal found 6/22![Southwest logo]()
$357
This Southwest deal was found by Cheapflights users on 6/23. Clicking the “Pick Dates” 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 8/285:15 am
SEA
- BOS
2 stops11h 25m
Southwest
Tue 9/15:35 am
BOS
- SEA
2 stops10h 45m
Southwest
Deal found 6/23![Southwest logo]()
$362
This United Airlines deal was found by Cheapflights users on 6/25. Clicking the “Pick Dates” 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 9/238:10 am
SEA
- MHT
1 stop7h 50m
United Airlines
Sat 9/269:25 am
MHT
- SEA
1 stop9h 26m
United Airlines
Deal found 6/25![United Airlines logo]()
$465
This United Airlines deal was found by Cheapflights users on 6/21. 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.
Sat 10/248:10 am
SEA
- PWM
1 stop8h 14m
United Airlines
Tue 10/275:08 pm
PWM
- SEA
1 stop8h 45m
United Airlines
Deal found 6/21![United Airlines logo]()
$475
This Southwest deal was found by Cheapflights users on 6/23. Clicking the “Pick Dates” 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 8/287:00 am
SEA
- MHT
2 stops11h 25m
Southwest
Tue 9/13:05 pm
MHT
- SEA
2 stops11h 20m
Southwest
Deal found 6/23![Southwest logo]()
$417
This JetBlue deal was found by Cheapflights users on 6/22. Clicking the “Pick Dates” 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 7/711:44 pm
SEA
- LEB
1 stop10h 52m
JetBlue
Sat 7/112:46 pm
LEB
- SEA
1 stop10h 45m
JetBlue
Deal found 6/22![JetBlue logo]()
$685
This United Airlines deal was found by Cheapflights users on 6/25. Clicking the “Pick Dates” 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 9/298:30 am
SEA
- PWM
2 stops11h 58m
United Airlines
Wed 9/307:57 am
PWM
- SEA
2 stops11h 09m
United Airlines
Deal found 6/25![United Airlines logo]()
$485
This Southwest deal was found by Cheapflights users on 6/21. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/2711:05 pm
SEA
- MHT
1 stop10h 05m
Southwest
Sun 8/306:10 pm
MHT
- SEA
1 stop8h 00m
Southwest
Deal found 6/21![Southwest logo]()
$419
This Priceline deal was found by Cheapflights users on 6/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/74:45 pm
SEA
- LEB
2 stops14h 17m
Multiple Airlines
Sat 7/112:46 pm
LEB
- SEA
1 stop10h 45m
Multiple Airlines
Deal found 6/22![Multiple Airlines logo]()
$793
This United Airlines deal was found by Cheapflights users on 6/24. Clicking the “Pick Dates” 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 10/311:13 pm
SEA
- PWM
1 stop8h 27m
United Airlines
Thu 10/86:00 am
PWM
- SEA
2 stops12h 51m
United Airlines
Deal found 6/24![United Airlines logo]()
$541
This Southwest deal was found by Cheapflights users on 6/25. Clicking the “Pick Dates” 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 8/217:25 pm
SEA
- PWM
2 stops11h 30m
Southwest
Mon 8/247:40 am
PWM
- SEA
2 stops10h 15m
Southwest
Deal found 6/25![Southwest logo]()
$457
This United Airlines deal was found by Cheapflights users on 6/21. 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.
Wed 9/307:25 pm
SEA
- PWM
2 stops12h 15m
United Airlines
Thu 10/86:00 am
PWM
- SEA
2 stops12h 51m
United Airlines
Deal found 6/21![United Airlines logo]()
$546
This Southwest deal was found by Cheapflights users on 6/24. Clicking the “Pick Dates” 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 7/227:30 pm
SEA
- MHT
2 stops10h 10m
Southwest
Tue 8/46:15 pm
MHT
- SEA
1 stop8h 20m
Southwest
Deal found 6/24![Southwest logo]()
$466
This Southwest deal was found by Cheapflights users on 6/21. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/2010:30 pm
SEA
- PWM
1 stop8h 20m
Southwest
Sun 8/237:40 am
PWM
- SEA
1 stop8h 15m
Southwest
Deal found 6/21![Southwest logo]()
$499
This Southwest deal was found by Cheapflights users on 6/23. Clicking the “Pick Dates” 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.
Sun 8/97:20 pm
SEA
- PWM
2 stops11h 30m
Southwest
Fri 8/141:05 pm
PWM
- SEA
2 stops10h 40m
Southwest
Deal found 6/23![Southwest logo]()
$606
This Southwest deal was found by Cheapflights users on 6/24. Clicking the “Pick Dates” 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 7/249:00 am
SEA
- PWM
2 stops12h 10m
Southwest
Fri 7/313:20 pm
PWM
- SEA
2 stops12h 15m
Southwest
Deal found 6/24![Southwest logo]()
$626
Last-minute flights from Seattle to New HampshireDiscover last-minute flight deals from Seattle to New Hampshire. Data last updated June 26, 2026 and is based on user searches.
Discover last-minute flight deals from Seattle to New Hampshire. Data last updated June 26, 2026 and is based on user searches.
This Super.com deal was found by Cheapflights users on 6/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/1011:45 am
SEA
- BOS
Nonstop5h 28m
JetBlue
Wed 7/227:29 pm
BOS
- SEA
Nonstop6h 25m
JetBlue
Deal found 6/25![JetBlue logo]()
$333
This American Airlines deal was found by Cheapflights users on 6/24. Clicking the “Pick Dates” 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.
Mon 7/135:10 am
SEA
- BOS
1 stop9h 54m
American Airlines
Tue 8/113:20 pm
BOS
- SEA
1 stop10h 36m
American Airlines
Deal found 6/24![American Airlines logo]()
$320
This lol.travel deal was found by Cheapflights users on 6/24. Clicking the “Pick Dates” 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.
Mon 7/1311:46 pm
SEA
- BOS
Nonstop5h 18m
JetBlue
Tue 7/217:10 am
BOS
- SEA
Nonstop6h 23m
JetBlue
Deal found 6/24![JetBlue logo]()
$323
This American Airlines deal was found by Cheapflights users on 6/24. Clicking the “Pick Dates” 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.
Mon 7/1311:56 pm
SEA
- BOS
1 stop7h 32m
American Airlines
Tue 7/216:01 am
BOS
- SEA
1 stop8h 39m
American Airlines
Deal found 6/24![American Airlines logo]()
$341
This Cheapflightsfares deal was found by Cheapflights users on 6/21. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/1411:46 pm
SEA
- BOS
Nonstop5h 18m
JetBlue
Tue 7/217:10 am
BOS
- SEA
Nonstop6h 23m
JetBlue
Deal found 6/21![JetBlue logo]()
$324
This Cheapflightsfares deal was found by Cheapflights users on 6/21. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/1410:19 pm
SEA
- BOS
1 stop10h 14m
JetBlue
Mon 7/207:10 am
BOS
- SEA
Nonstop6h 23m
JetBlue
Deal found 6/21![JetBlue logo]()
$338
This American Airlines deal was found by Cheapflights users on 6/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/1411:56 pm
SEA
- MHT
1 stop8h 35m
American Airlines
Sun 7/196:18 pm
MHT
- SEA
1 stop9h 34m
American Airlines
Deal found 6/23![American Airlines logo]()
$436
This Delta deal was found by Cheapflights users on 6/23. Clicking the “Pick Dates” 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 7/154:00 pm
SEA
- BOS
Nonstop5h 14m
Delta
Tue 7/217:29 pm
BOS
- SEA
Nonstop6h 33m
Delta
Deal found 6/23![Delta logo]()
$317
This American Airlines deal was found by Cheapflights users on 6/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/156:00 am
SEA
- BOS
1 stop8h 36m
American Airlines
Tue 7/216:01 am
BOS
- SEA
1 stop8h 39m
American Airlines
Deal found 6/24![American Airlines logo]()
$340
This American Airlines deal was found by Cheapflights users on 6/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/2112:40 pm
SEA
- MHT
1 stop7h 57m
American Airlines
Tue 8/46:18 pm
MHT
- SEA
1 stop9h 34m
American Airlines
Deal found 6/24![American Airlines logo]()
$465
This American Airlines deal was found by Cheapflights users on 6/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/2211:56 pm
SEA
- MHT
1 stop8h 35m
American Airlines
Tue 8/46:18 pm
MHT
- SEA
1 stop9h 34m
American Airlines
Deal found 6/25![American Airlines logo]()
$355
This American Airlines deal was found by Cheapflights users on 6/23. Clicking the “Pick Dates” 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.
Mon 7/2710:35 pm
SEA
- MHT
1 stop8h 32m
American Airlines
Thu 7/306:18 pm
MHT
- SEA
1 stop9h 34m
American Airlines
Deal found 6/23![American Airlines logo]()
$457
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 June 26, 2026.
Search for one-way flight options from Seattle to New Hampshire. Find affordable one-way fares based on user searches. Data last updated June 26, 2026.
This American Airlines deal was found by Cheapflights users on 6/21. 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.
Sat 7/46:00 am
SEA
- MHT
1 stop8h 22m
American Airlines
Deal found 6/21![American Airlines logo]()
$156
This American Airlines deal was found by Cheapflights users on 6/24. Clicking the “Pick Dates” 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.
Mon 8/319:58 pm
SEA
- BOS
1 stop8h 49m
American Airlines
Deal found 6/24![American Airlines logo]()
$168
This American Airlines deal was found by Cheapflights users on 6/25. Clicking the “Pick Dates” 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.
Sat 12/56:00 am
SEA
- BOS
1 stop8h 00m
American Airlines
Deal found 6/25![American Airlines logo]()
$169
This Southwest deal was found by Cheapflights users on 6/25. Clicking the “Pick Dates” 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 8/2911:00 pm
SEA
- BOS
2 stops10h 40m
Southwest
Deal found 6/25![Southwest logo]()
$170
This Cheapflightsfares deal was found by Cheapflights users on 6/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/2911:45 am
SEA
- BOS
Nonstop5h 28m
JetBlue
Deal found 6/25![JetBlue logo]()
$171
This American Airlines deal was found by Cheapflights users on 6/25. Clicking the “Pick Dates” 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 11/65:24 am
SEA
- BOS
1 stop8h 52m
American Airlines
Deal found 6/25![American Airlines logo]()
$174
This Cheapflightsfares deal was found by Cheapflights users on 6/23. Clicking the “Pick Dates” 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.
Fri 9/1111:55 pm
SEA
- BOS
Nonstop5h 24m
JetBlue
Deal found 6/23![JetBlue logo]()
$176
This Kiwi.com deal was found by Cheapflights users on 6/22. Clicking the “Pick Dates” 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.
Thu 8/2010:34 am
SEA
- BOS
2 stops22h 13m
Frontier
Deal found 6/22![Frontier logo]()
$177
This American Airlines deal was found by Cheapflights users on 6/21. 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.
Tue 8/2510:00 pm
SEA
- MHT
1 stop9h 55m
American Airlines
Deal found 6/21![American Airlines logo]()
$178
This Southwest deal was found by Cheapflights users on 6/23. Clicking the “Pick Dates” 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 8/229:20 am
SEA
- BOS
1 stop12h 05m
Southwest
Deal found 6/23![Southwest logo]()
$179
This Southwest deal was found by Cheapflights users on 6/24. Clicking the “Pick Dates” 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 8/139:10 am
SEA
- BOS
1 stop12h 15m
Southwest
Deal found 6/24![Southwest logo]()
$180
This United Airlines deal was found by Cheapflights users on 6/21. 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.
Thu 7/2311:11 pm
SEA
- BOS
1 stop7h 18m
United Airlines
Deal found 6/21![United Airlines logo]()
$181
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 June 26, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $310 (American Airlines) |
One-way from | $156 (American Airlines) |
Popular in | December |
Cheapest in | September |
Average price | $452 |
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 June 26, 2026.
Use the filters below to find and compare flights from Seattle to New Hampshire that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
SeattleBoston
SEA - BOS
SEABOS
Seattle/Tacoma Intl
Wed 7/15
4:00 pm-12:14 am
Nonstop5h 14m
Boston Logan Intl
Tue 7/21
7:29 pm-11:02 pm
Nonstop6h 33m
$317
SeattleBoston
SEA - BOS
SEABOS
Seattle/Tacoma Intl
Thu 10/22
6:40 pm-6:50 am
1 stop9h 10m
Boston Logan Intl
Mon 10/26
5:00 am-1:35 pm
1 stop11h 35m
$328
SeattleBoston
SEA - BOS
SEABOS
Seattle/Tacoma Intl
Tue 8/11
11:00 pm-1:35 pm
1 stop11h 35m
Boston Logan Intl
Sat 8/29
1:00 pm-9:30 pm
2 stops11h 30m
$338
SeattleBoston
SEA - BOS
SEABOS
Seattle/Tacoma Intl
Mon 10/5
12:15 am-1:55 pm
2 stops10h 40m
Boston Logan Intl
Tue 10/13
5:15 am-10:45 am
1 stop8h 30m
$347
Quickest round-trip
SeattleBoston
SEA - BOS
SEABOS
Seattle/Tacoma Intl
Mon 7/13
11:46 pm-8:04 am
Nonstop5h 18m
Boston Logan Intl
Tue 7/21
7:10 am-10:33 am
Nonstop6h 23m
$350
SeattleBoston
SEA - BOS
SEABOS
Seattle/Tacoma Intl
Tue 9/1
11:13 pm-7:35 am
Nonstop5h 22m
Boston Logan Intl
Fri 9/4
7:35 pm-11:11 pm
Nonstop6h 36m
$352
SeattleBoston
SEA - BOS
SEABOS
Seattle/Tacoma Intl
Thu 8/20
11:13 pm-7:35 am
Nonstop5h 22m
Boston Logan Intl
Sat 8/29
6:45 pm-10:20 pm
Nonstop6h 35m
$352
SeattleBoston
SEA - BOS
SEABOS
Seattle/Tacoma Intl
Wed 8/19
11:00 pm-2:55 pm
2 stops12h 55m
Boston Logan Intl
Tue 8/25
2:45 pm-11:25 pm
2 stops11h 40m
$352
SeattleBoston
SEA - BOS
SEABOS
Seattle/Tacoma Intl
Tue 8/25
6:52 pm-6:09 am
1 stop8h 17m
Boston Logan Intl
Wed 9/2
8:00 am-5:51 pm
1 stop12h 51m
$357
SeattleBoston
SEA - BOS
SEABOS
Seattle/Tacoma Intl
Sat 9/5
7:38 am-4:10 pm
Nonstop5h 32m
Boston Logan Intl
Sat 11/21
7:05 am-10:43 am
Nonstop6h 38m
$357
Showing 1-10 of 60 resultsSorted by cheapest first
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-BOS
SEA-MHT
SEA-LEB
SEA-PWM
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-BOS
SEA-MHT
SEA-LEB
SEA-PWM
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 $98). Flying from Seattle to New Hampshire in February is currently the most expensive (average of $483). 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 June 26, 2026.
Read reviews from past customers who have flown Southwest 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
Food
7.0
Boarding
8.1
Overall
7.9
Entertainment
7.5
Comfort
8.0
Reviews
1 / 20
8.0
ExcellentLibby,Jun 2026
TUS - LAS
Crew
8.6
Food
7.0
Boarding
8.1
Overall
7.9
Entertainment
7.5
Comfort
8.0
Reviews
1 / 20
8.0
ExcellentLibby,Jun 2026
TUS - LAS
Crew
8.6
Food
7.0
Boarding
8.1
Overall
7.9
Entertainment
7.5
Comfort
8.0
Reviews
1 / 20
8.0
ExcellentLibby,Jun 2026
TUS - LAS
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 June 26, 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 2 airlines flying from Seattle to New Hampshire
Discover the top 2 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 June 26, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$286 | Average$543 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$377 | Average$596 | FlexibilityNo cancel fee | On-time63% |