$146+ 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 5/12. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — MHT
May 18 — May 251
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
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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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 April 18, 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 April 18, 2026.
This Cheapflightsfares deal was found by Cheapflights users on 4/16. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/2311:35 am
SEA
- BOS
Nonstop5h 39m
JetBlue
Wed 5/277:00 am
BOS
- SEA
Nonstop6h 17m
JetBlue
Deal found 4/16![JetBlue logo]()
$282
This KAYAK deal was found by Cheapflights users on 4/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/1911:30 am
SEA
- BOS
Nonstop5h 37m
JetBlue
Wed 5/277:00 am
BOS
- SEA
Nonstop6h 17m
JetBlue
Deal found 4/13![JetBlue logo]()
$285
This American Airlines deal was found by Cheapflights users on 4/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/2610:35 pm
SEA
- BOS
1 stop10h 11m
American Airlines
Wed 6/35:57 pm
BOS
- SEA
1 stop10h 02m
American Airlines
Deal found 4/14![American Airlines logo]()
$287
This flygcity.se deal was found by Cheapflights users on 4/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure flygcity.se is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/3011:35 am
SEA
- BOS
Nonstop5h 39m
JetBlue
Sat 6/67:00 am
BOS
- SEA
Nonstop6h 15m
JetBlue
Deal found 4/15![JetBlue logo]()
$289
This American Airlines deal was found by Cheapflights users on 4/15. Clicking the “Pick Dates” 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 5/121:19 pm
SEA
- PWM
1 stop7h 58m
American Airlines
Wed 5/136:01 pm
PWM
- SEA
1 stop9h 35m
American Airlines
Deal found 4/15![American Airlines logo]()
$291
This Cheapflightsfares deal was found by Cheapflights users on 4/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/1911:30 am
SEA
- BOS
Nonstop5h 37m
JetBlue
Mon 5/257:00 am
BOS
- SEA
Nonstop6h 17m
JetBlue
Deal found 4/13![JetBlue logo]()
$292
This flugladen.de deal was found by Cheapflights users on 4/16. 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 flugladen.de is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/304:47 pm
SEA
- BOS
1 stop9h 57m
Multiple Airlines
Sat 6/67:00 am
BOS
- SEA
Nonstop6h 15m
Multiple Airlines
Deal found 4/16![Multiple Airlines logo]()
$293
This KAYAK deal was found by Cheapflights users on 4/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/1911:30 am
SEA
- BOS
Nonstop5h 37m
JetBlue
Sun 5/247:00 am
BOS
- SEA
Nonstop6h 17m
JetBlue
Deal found 4/13![JetBlue logo]()
$295
This Delta deal was found by Cheapflights users on 4/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/56:00 am
SEA
- PWM
2 stops14h 23m
Delta
Tue 5/122:38 pm
PWM
- SEA
1 stop8h 32m
Delta
Deal found 4/14![Delta logo]()
$296
This Delta deal was found by Cheapflights users on 4/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/2011:00 pm
SEA
- BOS
Nonstop5h 35m
Delta
Wed 5/2711:55 am
BOS
- SEA
Nonstop6h 10m
Delta
Deal found 4/13![Delta logo]()
$297
This JetBlue deal was found by Cheapflights users on 4/16. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/1711:30 am
SEA
- BOS
Nonstop5h 35m
JetBlue
Tue 5/267:00 am
BOS
- SEA
Nonstop6h 17m
JetBlue
Deal found 4/16![JetBlue logo]()
$298
This flygcity.se deal was found by Cheapflights users on 4/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure flygcity.se is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/2811:35 am
SEA
- BOS
Nonstop5h 39m
JetBlue
Wed 6/37:00 am
BOS
- SEA
Nonstop6h 17m
JetBlue
Deal found 4/15![JetBlue logo]()
$299
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 April 18, 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 April 18, 2026.
This Alaska Airlines deal was found by Cheapflights users on 4/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/53:21 pm
SEA
- BOS
Nonstop5h 38m
Alaska Airlines
Wed 5/64:33 pm
BOS
- SEA
Nonstop6h 22m
Alaska Airlines
Deal found 4/13![Alaska Airlines logo]()
$297
This Delta deal was found by Cheapflights users on 4/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/2611:59 pm
SEA
- PWM
2 stops8h 56m
Delta
Wed 6/32:05 pm
PWM
- SEA
2 stops13h 05m
Delta
Deal found 4/14![Delta logo]()
$351
This Southwest deal was found by Cheapflights users on 4/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 6/66:15 am
SEA
- BOS
1 stop11h 50m
Southwest
Wed 6/1012:50 pm
BOS
- SEA
2 stops13h 20m
Southwest
Deal found 4/14![Southwest logo]()
$368
This JetBlue deal was found by Cheapflights users on 4/16. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/111:44 pm
SEA
- BOS
Nonstop5h 16m
JetBlue
Thu 7/97:24 pm
BOS
- SEA
Nonstop6h 25m
JetBlue
Deal found 4/16![JetBlue logo]()
$387
This United Airlines deal was found by Cheapflights users on 4/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/57:36 pm
SEA
- BOS
2 stops11h 44m
United Airlines
Wed 5/63:00 pm
BOS
- SEA
1 stop10h 47m
United Airlines
Deal found 4/13![United Airlines logo]()
$402
This American Airlines deal was found by Cheapflights users on 4/17. 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.
Mon 5/1110:25 am
SEA
- MHT
2 stops10h 19m
American Airlines
Thu 5/145:42 pm
MHT
- SEA
1 stop9h 54m
American Airlines
Deal found 4/17![American Airlines logo]()
$566
This Delta deal was found by Cheapflights users on 4/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/2611:00 pm
SEA
- BOS
Nonstop5h 35m
Delta
Wed 6/37:48 am
BOS
- SEA
Nonstop6h 05m
Delta
Deal found 4/13![Delta logo]()
$357
This Southwest deal was found by Cheapflights users on 4/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 6/137:35 pm
SEA
- BOS
2 stops11h 15m
Southwest
Tue 6/163:45 pm
BOS
- SEA
1 stop11h 35m
Southwest
Deal found 4/13![Southwest logo]()
$383
This Kiwi.com deal was found by Cheapflights users on 4/16. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/13:21 pm
SEA
- LEB
1 stop15h 32m
Multiple Airlines
Tue 5/54:00 pm
LEB
- SEA
1 stop8h 59m
Multiple Airlines
Deal found 4/16![Multiple Airlines logo]()
$797
This Alaska Airlines deal was found by Cheapflights users on 4/16. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/3111:59 am
SEA
- BOS
1 stop14h 45m
Alaska Airlines
Sun 6/76:40 pm
BOS
- SEA
1 stop17h 45m
Alaska Airlines
Deal found 4/16![Alaska Airlines logo]()
$412
This Southwest deal was found by Cheapflights users on 4/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/3011:55 pm
SEA
- BOS
1 stop8h 00m
Southwest
Sat 6/64:50 pm
BOS
- SEA
2 stops11h 20m
Southwest
Deal found 4/14![Southwest logo]()
$385
This Delta deal was found by Cheapflights users on 4/16. 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.
Sat 6/69:35 am
SEA
- PWM
2 stops12h 08m
Delta
Mon 6/152:59 pm
PWM
- SEA
1 stop10h 59m
Delta
Deal found 4/16![Delta logo]()
$396
This United Airlines deal was found by Cheapflights users on 4/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/77:05 pm
SEA
- PWM
2 stops10h 44m
United Airlines
Tue 5/126:00 am
PWM
- SEA
1 stop8h 39m
United Airlines
Deal found 4/13![United Airlines logo]()
$440
This Southwest deal was found by Cheapflights users on 4/17. 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.
Wed 6/311:45 pm
SEA
- BOS
1 stop8h 10m
Southwest
Sat 6/64:50 pm
BOS
- SEA
2 stops11h 20m
Southwest
Deal found 4/17![Southwest logo]()
$385
This Delta deal was found by Cheapflights users on 4/17. 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.
Sat 5/912:05 pm
SEA
- BOS
Nonstop5h 40m
Delta
Sat 5/165:20 pm
BOS
- SEA
Nonstop6h 13m
Delta
Deal found 4/17![Delta logo]()
$402
This Alaska Airlines deal was found by Cheapflights users on 4/17. 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.
Tue 5/59:44 pm
SEA
- PWM
1 stop9h 39m
Alaska Airlines
Wed 5/63:02 pm
PWM
- SEA
1 stop10h 00m
Alaska Airlines
Deal found 4/17![Alaska Airlines logo]()
$451
This United Airlines deal was found by Cheapflights users on 4/17. 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.
Tue 5/57:00 am
SEA
- PWM
2 stops13h 29m
United Airlines
Wed 5/64:50 pm
PWM
- SEA
1 stop8h 57m
United Airlines
Deal found 4/17![United Airlines logo]()
$456
This Delta deal was found by Cheapflights users on 4/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/411:14 pm
SEA
- PWM
2 stops14h 31m
Delta
Sat 5/912:50 pm
PWM
- SEA
2 stops10h 53m
Delta
Deal found 4/14![Delta logo]()
$420
This Southwest deal was found by Cheapflights users on 4/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/1412:15 am
SEA
- PWM
2 stops13h 40m
Southwest
Sun 10/187:25 am
PWM
- SEA
1 stop8h 10m
Southwest
Deal found 4/13![Southwest logo]()
$425
This United Airlines deal was found by Cheapflights users on 4/16. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/278:00 am
SEA
- MHT
1 stop8h 02m
United Airlines
Thu 5/282:37 pm
MHT
- SEA
2 stops13h 52m
United Airlines
Deal found 4/16![United Airlines logo]()
$502
This Southwest deal was found by Cheapflights users on 4/17. 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.
Wed 6/105:00 am
SEA
- BOS
1 stop10h 00m
Southwest
Sun 6/145:50 am
BOS
- SEA
1 stop11h 25m
Southwest
Deal found 4/17![Southwest logo]()
$432
This Southwest deal was found by Cheapflights users on 4/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/2611:00 pm
SEA
- PWM
2 stops10h 25m
Southwest
Thu 9/310:30 am
PWM
- SEA
2 stops10h 50m
Southwest
Deal found 4/14![Southwest logo]()
$435
This United Airlines deal was found by Cheapflights users on 4/17. 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.
Mon 9/2110:47 pm
SEA
- PWM
2 stops12h 07m
United Airlines
Mon 9/284:48 pm
PWM
- SEA
1 stop8h 41m
United Airlines
Deal found 4/17![United Airlines logo]()
$529
This Southwest deal was found by Cheapflights users on 4/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/116:15 pm
SEA
- MHT
2 stops10h 50m
Southwest
Fri 5/153:15 pm
MHT
- SEA
2 stops12h 40m
Southwest
Deal found 4/13![Southwest logo]()
$438
This KAYAK deal was found by Cheapflights users on 4/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/2711:44 pm
SEA
- LEB
1 stop11h 03m
JetBlue
Sun 8/303:53 pm
LEB
- SEA
1 stop9h 56m
JetBlue
Deal found 4/13![JetBlue logo]()
$819
This Southwest deal was found by Cheapflights users on 4/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/2111:00 pm
SEA
- PWM
2 stops9h 45m
Southwest
Mon 8/245:55 am
PWM
- SEA
1 stop12h 05m
Southwest
Deal found 4/14![Southwest logo]()
$480
This Southwest deal was found by Cheapflights users on 4/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/175:15 am
SEA
- MHT
1 stop13h 40m
Southwest
Wed 5/2712:45 pm
MHT
- SEA
2 stops14h 25m
Southwest
Deal found 4/13![Southwest logo]()
$483
This Southwest deal was found by Cheapflights users on 4/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/75:15 am
SEA
- MHT
1 stop7h 45m
Southwest
Fri 5/153:15 pm
MHT
- SEA
2 stops12h 40m
Southwest
Deal found 4/14![Southwest logo]()
$488
This Southwest deal was found by Cheapflights users on 4/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/115:35 pm
SEA
- MHT
2 stops11h 30m
Southwest
Mon 5/183:15 pm
MHT
- SEA
2 stops11h 50m
Southwest
Deal found 4/13![Southwest logo]()
$528
This Southwest deal was found by Cheapflights users on 4/17. 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.
Sat 5/211:55 pm
SEA
- MHT
1 stop7h 45m
Southwest
Wed 5/67:30 am
MHT
- SEA
1 stop8h 15m
Southwest
Deal found 4/17![Southwest logo]()
$577
Last-minute flights from Seattle to New HampshireDiscover last-minute flight deals from Seattle to New Hampshire. Data last updated April 18, 2026 and is based on user searches.
Discover last-minute flight deals from Seattle to New Hampshire. Data last updated April 18, 2026 and is based on user searches.
This Delta deal was found by Cheapflights users on 4/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/56:00 am
SEA
- PWM
2 stops14h 23m
Delta
Tue 5/122:38 pm
PWM
- SEA
1 stop8h 32m
Delta
Deal found 4/14![Delta logo]()
$296
This American Airlines deal was found by Cheapflights users on 4/15. Clicking the “Pick Dates” 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 5/121:19 pm
SEA
- PWM
1 stop7h 58m
American Airlines
Wed 5/136:01 pm
PWM
- SEA
1 stop9h 35m
American Airlines
Deal found 4/15![American Airlines logo]()
$291
This JetBlue deal was found by Cheapflights users on 4/16. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/1711:30 am
SEA
- BOS
Nonstop5h 35m
JetBlue
Tue 5/267:00 am
BOS
- SEA
Nonstop6h 17m
JetBlue
Deal found 4/16![JetBlue logo]()
$298
This KAYAK deal was found by Cheapflights users on 4/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/1911:30 am
SEA
- BOS
Nonstop5h 37m
JetBlue
Wed 5/277:00 am
BOS
- SEA
Nonstop6h 17m
JetBlue
Deal found 4/13![JetBlue logo]()
$285
This Cheapflightsfares deal was found by Cheapflights users on 4/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/1911:30 am
SEA
- BOS
Nonstop5h 37m
JetBlue
Mon 5/257:00 am
BOS
- SEA
Nonstop6h 17m
JetBlue
Deal found 4/13![JetBlue logo]()
$292
This KAYAK deal was found by Cheapflights users on 4/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/1911:30 am
SEA
- BOS
Nonstop5h 37m
JetBlue
Sun 5/247:00 am
BOS
- SEA
Nonstop6h 17m
JetBlue
Deal found 4/13![JetBlue logo]()
$295
This Delta deal was found by Cheapflights users on 4/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/2011:00 pm
SEA
- BOS
Nonstop5h 35m
Delta
Wed 5/2711:55 am
BOS
- SEA
Nonstop6h 10m
Delta
Deal found 4/13![Delta logo]()
$297
This Cheapflightsfares deal was found by Cheapflights users on 4/16. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/2311:35 am
SEA
- BOS
Nonstop5h 39m
JetBlue
Wed 5/277:00 am
BOS
- SEA
Nonstop6h 17m
JetBlue
Deal found 4/16![JetBlue logo]()
$282
This American Airlines deal was found by Cheapflights users on 4/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/2610:35 pm
SEA
- BOS
1 stop10h 11m
American Airlines
Wed 6/35:57 pm
BOS
- SEA
1 stop10h 02m
American Airlines
Deal found 4/14![American Airlines logo]()
$287
This flygcity.se deal was found by Cheapflights users on 4/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure flygcity.se is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/2811:35 am
SEA
- BOS
Nonstop5h 39m
JetBlue
Wed 6/37:00 am
BOS
- SEA
Nonstop6h 17m
JetBlue
Deal found 4/15![JetBlue logo]()
$299
This flygcity.se deal was found by Cheapflights users on 4/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure flygcity.se is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/3011:35 am
SEA
- BOS
Nonstop5h 39m
JetBlue
Sat 6/67:00 am
BOS
- SEA
Nonstop6h 15m
JetBlue
Deal found 4/15![JetBlue logo]()
$289
This flugladen.de deal was found by Cheapflights users on 4/16. 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 flugladen.de is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/304:47 pm
SEA
- BOS
1 stop9h 57m
Multiple Airlines
Sat 6/67:00 am
BOS
- SEA
Nonstop6h 15m
Multiple Airlines
Deal found 4/16![Multiple Airlines logo]()
$293
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 April 18, 2026.
Search for one-way flight options from Seattle to New Hampshire. Find affordable one-way fares based on user searches. Data last updated April 18, 2026.
This American Airlines deal was found by Cheapflights users on 4/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/1211:16 am
SEA
- PWM
1 stop10h 01m
American Airlines
Deal found 4/13![American Airlines logo]()
$146
This Delta deal was found by Cheapflights users on 4/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/1211:00 pm
SEA
- BOS
Nonstop5h 35m
Delta
Deal found 4/13![Delta logo]()
$149
This United Airlines deal was found by Cheapflights users on 4/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/128:10 am
SEA
- PWM
2 stops12h 19m
United Airlines
Deal found 4/13![United Airlines logo]()
$151
This KAYAK deal was found by Cheapflights users on 4/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/411:44 pm
SEA
- BOS
Nonstop5h 16m
JetBlue
Deal found 4/15![JetBlue logo]()
$151
This KAYAK deal was found by Cheapflights users on 4/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/2811:35 am
SEA
- BOS
Nonstop5h 39m
JetBlue
Deal found 4/13![JetBlue logo]()
$152
This American Airlines deal was found by Cheapflights users on 4/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/2910:35 pm
SEA
- BOS
1 stop7h 06m
American Airlines
Deal found 4/14![American Airlines logo]()
$153
This United Airlines deal was found by Cheapflights users on 4/17. 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.
Thu 5/2810:40 pm
SEA
- BOS
1 stop7h 59m
United Airlines
Deal found 4/17![United Airlines logo]()
$154
This Kiwi.com deal was found by Cheapflights users on 4/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/47:12 pm
SEA
- BOS
2 stops27h 12m
Frontier
Deal found 4/15![Frontier logo]()
$158
This United Airlines deal was found by Cheapflights users on 4/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/2910:55 pm
SEA
- BOS
1 stop8h 25m
United Airlines
Deal found 4/14![United Airlines logo]()
$159
This American Airlines deal was found by Cheapflights users on 4/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/2811:58 pm
SEA
- PWM
1 stop8h 48m
American Airlines
Deal found 4/14![American Airlines logo]()
$161
This Kiwi.com deal was found by Cheapflights users on 4/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/1111:06 am
SEA
- BOS
2 stops18h 38m
Frontier
Deal found 4/13![Frontier logo]()
$163
This Alaska Airlines deal was found by Cheapflights users on 4/16. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/184:47 pm
SEA
- BOS
1 stop9h 57m
Alaska Airlines
Deal found 4/16![Alaska Airlines logo]()
$164
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 April 18, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $282 (Cheapflightsfares) |
One-way from | $146 (American Airlines) |
Popular in | December |
Cheapest in | September |
Average price | $441 |
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 April 18, 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
Tue 5/5
3:21 pm-11:59 pm
Nonstop5h 38m
Boston Logan Intl
Wed 5/6
4:33 pm-7:55 pm
Nonstop6h 22m
$297
SeattlePortland
SEA - PWM
SEAPWM
Seattle/Tacoma Intl
Tue 5/26
11:59 pm-11:55 am
2 stops8h 56m
Portland
Wed 6/3
2:05 pm-12:10 am
2 stops13h 05m
$351
Quickest round-trip
SeattleBoston
SEA - BOS
SEABOS
Seattle/Tacoma Intl
Tue 5/26
11:00 pm-7:35 am
Nonstop5h 35m
Boston Logan Intl
Wed 6/3
7:48 am-10:53 am
Nonstop6h 05m
$357
SeattleBoston
SEA - BOS
SEABOS
Seattle/Tacoma Intl
Sat 6/6
6:15 am-9:05 pm
1 stop11h 50m
Boston Logan Intl
Wed 6/10
12:50 pm-11:10 pm
2 stops13h 20m
$368
SeattleBoston
SEA - BOS
SEABOS
Seattle/Tacoma Intl
Sat 6/13
7:35 pm-9:50 am
2 stops11h 15m
Boston Logan Intl
Tue 6/16
3:45 pm-12:20 am
1 stop11h 35m
$383
SeattleBoston
SEA - BOS
SEABOS
Seattle/Tacoma Intl
Sat 5/30
11:55 pm-10:55 am
1 stop8h 00m
Boston Logan Intl
Sat 6/6
4:50 pm-1:10 am
2 stops11h 20m
$385
SeattleBoston
SEA - BOS
SEABOS
Seattle/Tacoma Intl
Wed 6/3
11:45 pm-10:55 am
1 stop8h 10m
Boston Logan Intl
Sat 6/6
4:50 pm-1:10 am
2 stops11h 20m
$385
SeattleBoston
SEA - BOS
SEABOS
Seattle/Tacoma Intl
Wed 7/1
11:44 pm-8:00 am
Nonstop5h 16m
Boston Logan Intl
Thu 7/9
7:24 pm-10:49 pm
Nonstop6h 25m
$387
SeattlePortland
SEA - PWM
SEAPWM
Seattle/Tacoma Intl
Sat 6/6
9:35 am-12:43 am
2 stops12h 08m
Portland
Mon 6/15
2:59 pm-10:58 pm
1 stop10h 59m
$396
SeattleBoston
SEA - BOS
SEABOS
Seattle/Tacoma Intl
Tue 5/5
7:36 pm-10:20 am
2 stops11h 44m
Boston Logan Intl
Wed 5/6
3:00 pm-10:47 pm
1 stop10h 47m
$402
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-PWM
SEA-MHT
SEA-LEB
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-PWM
SEA-MHT
SEA-LEB
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 April 18, 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.
Overall
8.0
Boarding
8.1
Comfort
8.0
Crew
8.6
Entertainment
7.5
Food
7.0
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Overall
8.0
Boarding
8.1
Comfort
8.0
Crew
8.6
Entertainment
7.5
Food
7.0
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Overall
8.0
Boarding
8.1
Comfort
8.0
Crew
8.6
Entertainment
7.5
Food
7.0
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
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 April 18, 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 April 18, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$333 | Average$516 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$377 | Average$532 | FlexibilityNo cancel fee | On-time63% |