$134+ Cheap flights from New Hampshire to Seattle (SEA)
This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 6/4. Fares are subject to change and may not be available on all flights or dates of travel.
MHT — SEA
May 22 — May 291
Round-trip
1 adult, Economy
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Find cheap flights from New Hampshire to Seattle with Cheapflights
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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 New Hampshire to SeattleExplore the most affordable flight options available from New Hampshire to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 22, 2026.
Explore the most affordable flight options available from New Hampshire to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 22, 2026.
This Southwest deal was found by Cheapflights users on 4/20. 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.
Tue 8/112:45 pm
BOS
- SEA
2 stops11h 40m
Southwest
Tue 8/185:30 pm
SEA
- BOS
1 stop9h 30m
Southwest
Deal found 4/20![Southwest logo]()
$216
This Southwest deal was found by Cheapflights users on 4/21. 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 8/252:45 pm
BOS
- SEA
2 stops11h 40m
Southwest
Tue 9/111:05 pm
SEA
- BOS
2 stops10h 35m
Southwest
Deal found 4/21![Southwest logo]()
$221
This Southwest deal was found by Cheapflights users on 4/21. 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 8/188:30 am
BOS
- SEA
1 stop14h 55m
Southwest
Tue 8/2511:05 pm
SEA
- BOS
1 stop7h 50m
Southwest
Deal found 4/21![Southwest logo]()
$222
This Southwest deal was found by Cheapflights users on 4/20. 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.
Tue 8/182:10 pm
BOS
- SEA
1 stop9h 15m
Southwest
Wed 8/265:30 pm
SEA
- BOS
1 stop9h 30m
Southwest
Deal found 4/20![Southwest logo]()
$231
This Southwest deal was found by Cheapflights users on 4/19. 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.
Wed 9/92:45 pm
BOS
- SEA
2 stops11h 40m
Southwest
Tue 9/225:20 am
SEA
- BOS
2 stops10h 15m
Southwest
Deal found 4/19![Southwest logo]()
$242
This Delta deal was found by Cheapflights users on 4/20. 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.
Thu 5/284:48 pm
PWM
- SEA
1 stop9h 00m
Delta
Tue 6/211:05 pm
SEA
- PWM
1 stop9h 50m
Delta
Deal found 4/20![Delta logo]()
$246
This Alaska Airlines deal was found by Cheapflights users on 4/21. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/127:00 am
BOS
- SEA
Nonstop6h 19m
Alaska Airlines
Tue 5/1212:55 pm
SEA
- BOS
1 stop13h 49m
Alaska Airlines
Deal found 4/21![Alaska Airlines logo]()
$247
This Delta deal was found by Cheapflights users on 4/21. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/147:30 pm
BOS
- SEA
Nonstop6h 10m
Delta
Wed 5/204:10 pm
SEA
- BOS
Nonstop5h 30m
Delta
Deal found 4/21![Delta logo]()
$257
This Southwest deal was found by Cheapflights users on 4/21. 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 8/112:45 pm
BOS
- SEA
2 stops11h 40m
Southwest
Sat 8/155:30 pm
SEA
- BOS
1 stop9h 30m
Southwest
Deal found 4/21![Southwest logo]()
$262
This Southwest deal was found by Cheapflights users on 4/20. 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.
Tue 6/26:20 pm
BOS
- SEA
1 stop8h 50m
Southwest
Tue 6/95:00 am
SEA
- BOS
1 stop10h 00m
Southwest
Deal found 4/20![Southwest logo]()
$264
This American Airlines deal was found by Cheapflights users on 4/21. 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 6/25:36 pm
PWM
- SEA
1 stop10h 23m
American Airlines
Fri 6/510:35 pm
SEA
- PWM
1 stop9h 02m
American Airlines
Deal found 4/21![American Airlines logo]()
$268
This Delta deal was found by Cheapflights users on 4/21. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/412:50 pm
PWM
- SEA
2 stops14h 20m
Delta
Mon 6/811:59 pm
SEA
- PWM
1 stop7h 44m
Delta
Deal found 4/21![Delta logo]()
$272
Best flights from New Hampshire to SeattleDiscover carefully curated flight deals from New Hampshire to Seattle that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated April 22, 2026.
Discover carefully curated flight deals from New Hampshire to Seattle that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated April 22, 2026.
This Southwest deal was found by Cheapflights users on 4/20. 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.
Thu 9/1011:15 am
BOS
- SEA
1 stop11h 20m
Southwest
Wed 9/165:30 pm
SEA
- BOS
1 stop9h 30m
Southwest
Deal found 4/20![Southwest logo]()
$278
This Delta deal was found by Cheapflights users on 4/20. 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.
Thu 8/273:30 pm
BOS
- SEA
Nonstop6h 30m
Delta
Mon 8/3110:00 pm
SEA
- BOS
Nonstop5h 35m
Delta
Deal found 4/20![Delta logo]()
$367
This United Airlines deal was found by Cheapflights users on 4/21. 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.
Tue 9/16:00 am
PWM
- SEA
1 stop11h 27m
United Airlines
Sat 9/126:00 pm
SEA
- PWM
2 stops12h 22m
United Airlines
Deal found 4/21![United Airlines logo]()
$368
This Alaska Airlines deal was found by Cheapflights users on 4/18. 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.
Wed 9/23:28 pm
BOS
- SEA
Nonstop6h 18m
Alaska Airlines
Thu 9/243:48 pm
SEA
- BOS
1 stop11h 21m
Alaska Airlines
Deal found 4/18![Alaska Airlines logo]()
$402
This JetBlue 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/37:00 am
BOS
- SEA
Nonstop6h 17m
JetBlue
Wed 6/2410:28 pm
SEA
- BOS
1 stop9h 58m
JetBlue
Deal found 4/17![JetBlue logo]()
$425
This Expedia deal was found by Cheapflights users on 4/21. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/267:00 am
LEB
- SEA
2 stops10h 55m
Multiple Airlines
Wed 9/211:06 pm
SEA
- LEB
1 stop13h 17m
Multiple Airlines
Deal found 4/21![Multiple Airlines logo]()
$652
This Southwest deal was found by Cheapflights users on 4/21. 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.
Sat 9/55:00 am
BOS
- SEA
1 stop15h 00m
Southwest
Sun 9/135:25 pm
SEA
- BOS
1 stop9h 35m
Southwest
Deal found 4/21![Southwest logo]()
$350
This Delta deal was found by Cheapflights users on 4/21. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/412:50 pm
PWM
- SEA
2 stops14h 20m
Delta
Thu 6/1111:59 pm
SEA
- PWM
2 stops11h 20m
Delta
Deal found 4/21![Delta logo]()
$387
This United Airlines deal was found by Cheapflights users on 4/21. 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 6/46:25 pm
PWM
- SEA
1 stop8h 34m
United Airlines
Thu 6/111:00 pm
SEA
- PWM
1 stop7h 51m
United Airlines
Deal found 4/21![United Airlines logo]()
$393
This Alaska Airlines deal was found by Cheapflights users on 4/18. 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.
Fri 9/186:10 pm
BOS
- SEA
1 stop18h 13m
Alaska Airlines
Sat 9/2610:04 am
SEA
- BOS
1 stop17h 05m
Alaska Airlines
Deal found 4/18![Alaska Airlines logo]()
$407
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.
Tue 8/115:35 am
MHT
- SEA
2 stops10h 30m
Southwest
Tue 8/187:10 am
SEA
- MHT
2 stops11h 40m
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.
Mon 5/46:45 pm
BOS
- SEA
Nonstop6h 20m
Delta
Wed 5/134:10 pm
SEA
- BOS
Nonstop5h 30m
Delta
Deal found 4/17![Delta logo]()
$412
This United Airlines deal was found by Cheapflights users on 4/22. 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.
Wed 5/206:00 am
PWM
- SEA
1 stop8h 39m
United Airlines
Wed 5/278:00 am
SEA
- PWM
1 stop8h 27m
United Airlines
Deal found 4/22![United Airlines logo]()
$428
This Southwest deal was found by Cheapflights users on 4/21. 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 6/305:30 pm
BOS
- SEA
1 stop9h 50m
Southwest
Fri 7/1011:05 pm
SEA
- BOS
1 stop9h 25m
Southwest
Deal found 4/21![Southwest logo]()
$412
This Delta deal was found by Cheapflights users on 4/19. 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.
Wed 6/312:50 pm
PWM
- SEA
2 stops14h 20m
Delta
Wed 6/1011:40 am
SEA
- PWM
1 stop10h 12m
Delta
Deal found 4/19![Delta logo]()
$415
This Delta deal was found by Cheapflights users on 4/18. 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.
Sat 9/126:35 pm
BOS
- SEA
Nonstop6h 30m
Delta
Sat 9/195:45 pm
SEA
- BOS
1 stop9h 24m
Delta
Deal found 4/18![Delta logo]()
$417
This Southwest deal was found by Cheapflights users on 4/19. 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.
Fri 8/78:40 am
BOS
- SEA
1 stop16h 05m
Southwest
Thu 8/137:25 pm
SEA
- BOS
2 stops11h 25m
Southwest
Deal found 4/19![Southwest logo]()
$428
This Alaska Airlines deal was found by Cheapflights users on 4/20. 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.
Tue 9/13:06 pm
PWM
- SEA
1 stop8h 52m
Alaska Airlines
Fri 9/1111:38 am
SEA
- PWM
2 stops33h 03m
Alaska Airlines
Deal found 4/20![Alaska Airlines logo]()
$520
This Delta deal was found by Cheapflights users on 4/21. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/154:30 pm
BOS
- SEA
1 stop10h 25m
Delta
Sun 5/246:00 am
SEA
- BOS
1 stop10h 15m
Delta
Deal found 4/21![Delta logo]()
$417
This United Airlines deal was found by Cheapflights users on 4/21. 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.
Fri 9/1810:43 am
PWM
- SEA
1 stop10h 32m
United Airlines
Wed 9/237:06 am
SEA
- PWM
2 stops13h 53m
United Airlines
Deal found 4/21![United Airlines logo]()
$509
This Southwest deal was found by Cheapflights users on 4/19. 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.
Wed 9/25:45 am
PWM
- SEA
2 stops12h 15m
Southwest
Tue 9/811:05 pm
SEA
- PWM
2 stops10h 20m
Southwest
Deal found 4/19![Southwest logo]()
$446
This Delta deal was found by Cheapflights users on 4/20. 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.
Sat 6/136:50 pm
BOS
- SEA
Nonstop6h 25m
Delta
Wed 6/177:29 am
SEA
- BOS
Nonstop5h 31m
Delta
Deal found 4/20![Delta logo]()
$417
This Alaska Airlines deal was found by Cheapflights users on 4/19. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/2712:03 pm
MHT
- SEA
2 stops13h 31m
Alaska Airlines
Tue 6/25:28 pm
SEA
- MHT
2 stops27h 23m
Alaska Airlines
Deal found 4/19![Alaska Airlines logo]()
$577
This Southwest deal was found by Cheapflights users on 4/20. 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.
Sat 8/153:35 pm
MHT
- SEA
1 stop8h 20m
Southwest
Sun 8/2311:05 pm
SEA
- MHT
1 stop10h 05m
Southwest
Deal found 4/20![Southwest logo]()
$457
This Delta deal was found by Cheapflights users on 4/19. 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.
Tue 5/1912:50 pm
PWM
- SEA
2 stops12h 13m
Delta
Tue 5/2611:59 pm
SEA
- PWM
2 stops8h 56m
Delta
Deal found 4/19![Delta logo]()
$420
This United Airlines deal was found by Cheapflights users on 4/21. 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.
Tue 6/29:25 am
MHT
- SEA
1 stop14h 21m
United Airlines
Wed 6/37:40 am
SEA
- MHT
1 stop8h 22m
United Airlines
Deal found 4/21![United Airlines logo]()
$575
This Southwest deal was found by Cheapflights users on 4/19. 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.
Fri 5/293:15 pm
MHT
- SEA
2 stops11h 50m
Southwest
Tue 6/27:10 pm
SEA
- MHT
2 stops9h 55m
Southwest
Deal found 4/19![Southwest logo]()
$497
This KAYAK deal was found by Cheapflights users on 4/21. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/153:53 pm
LEB
- SEA
1 stop9h 56m
JetBlue
Sun 8/2311:44 pm
SEA
- LEB
1 stop11h 03m
JetBlue
Deal found 4/21![JetBlue logo]()
$936
This Southwest deal was found by Cheapflights users on 4/20. 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.
Sun 6/217:10 pm
MHT
- SEA
1 stop7h 55m
Southwest
Sat 6/279:25 pm
SEA
- MHT
1 stop7h 35m
Southwest
Deal found 4/20![Southwest logo]()
$517
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.
Thu 7/236:30 am
PWM
- SEA
1 stop19h 36m
Delta
Tue 7/285:20 am
SEA
- PWM
2 stops15h 10m
Delta
Deal found 4/17![Delta logo]()
$518
Last-minute flights from New Hampshire to SeattleDiscover last-minute flight deals from New Hampshire to Seattle. Data last updated April 22, 2026 and is based on user searches.
Discover last-minute flight deals from New Hampshire to Seattle. Data last updated April 22, 2026 and is based on user searches.
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.
Fri 5/16:39 pm
BOS
- SEA
1 stop8h 20m
United Airlines
Mon 5/1810:41 pm
SEA
- BOS
1 stop8h 37m
United Airlines
Deal found 4/17![United Airlines logo]()
$322
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.
Sat 5/24:35 pm
BOS
- SEA
1 stop9h 12m
United Airlines
Wed 5/61:07 pm
SEA
- BOS
1 stop7h 52m
United Airlines
Deal found 4/17![United Airlines logo]()
$312
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.
Sat 5/25:05 pm
BOS
- SEA
1 stop8h 21m
Alaska Airlines
Sat 5/910:45 pm
SEA
- BOS
Nonstop5h 27m
Alaska Airlines
Deal found 4/17![Alaska Airlines logo]()
$317
This American Airlines deal was found by Cheapflights users on 4/19. 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.
Sun 5/36:00 am
PWM
- SEA
1 stop8h 34m
American Airlines
Tue 5/1212:34 pm
SEA
- PWM
1 stop7h 52m
American Airlines
Deal found 4/19![American Airlines logo]()
$316
This American Airlines deal was found by Cheapflights users on 4/18. 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.
Tue 5/55:02 pm
PWM
- SEA
2 stops10h 34m
American Airlines
Tue 5/121:19 pm
SEA
- PWM
1 stop7h 58m
American Airlines
Deal found 4/18![American Airlines logo]()
$321
This American Airlines deal was found by Cheapflights users on 4/21. 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.
Wed 5/66:00 am
PWM
- SEA
1 stop8h 34m
American Airlines
Tue 5/121:19 pm
SEA
- PWM
1 stop7h 58m
American Airlines
Deal found 4/21![American Airlines logo]()
$283
This American Airlines deal was found by Cheapflights users on 4/21. 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 5/93:40 pm
PWM
- SEA
2 stops12h 04m
American Airlines
Wed 5/1312:34 pm
SEA
- PWM
1 stop7h 52m
American Airlines
Deal found 4/21![American Airlines logo]()
$323
This American Airlines deal was found by Cheapflights users on 4/18. 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.
Sat 5/96:00 am
PWM
- SEA
1 stop8h 34m
American Airlines
Sun 5/1010:47 pm
SEA
- PWM
1 stop8h 31m
American Airlines
Deal found 4/18![American Airlines logo]()
$325
This United Airlines deal was found by Cheapflights users on 4/21. 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 5/134:50 pm
PWM
- SEA
1 stop8h 57m
United Airlines
Sun 5/1710:53 pm
SEA
- PWM
1 stop8h 35m
United Airlines
Deal found 4/21![United Airlines logo]()
$320
This American Airlines deal was found by Cheapflights users on 4/20. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/275:59 pm
MHT
- SEA
1 stop9h 17m
American Airlines
Tue 6/211:58 pm
SEA
- MHT
1 stop8h 52m
American Airlines
Deal found 4/20![American Airlines logo]()
$293
This Delta deal was found by Cheapflights users on 4/20. 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.
Thu 5/284:48 pm
PWM
- SEA
1 stop9h 00m
Delta
Tue 6/211:05 pm
SEA
- PWM
1 stop9h 50m
Delta
Deal found 4/20![Delta logo]()
$246
This Delta deal was found by Cheapflights users on 4/20. 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.
Fri 5/292:38 pm
PWM
- SEA
1 stop11h 07m
Delta
Thu 6/45:30 am
SEA
- PWM
2 stops14h 39m
Delta
Deal found 4/20![Delta logo]()
$294
One-way flights from New Hampshire to SeattleSearch for one-way flight options from New Hampshire to Seattle. Find affordable one-way fares based on user searches. Data last updated April 22, 2026.
Search for one-way flight options from New Hampshire to Seattle. Find affordable one-way fares based on user searches. Data last updated April 22, 2026.
This United Airlines deal was found by Cheapflights users on 4/21. 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 6/46:25 pm
PWM
- SEA
1 stop8h 34m
United Airlines
Deal found 4/21![United Airlines logo]()
$134
This Delta deal was found by Cheapflights users on 4/21. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/412:50 pm
PWM
- SEA
2 stops14h 20m
Delta
Deal found 4/21![Delta logo]()
$139
This Alaska Airlines deal was found by Cheapflights users on 4/20. 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.
Tue 8/187:44 pm
BOS
- SEA
Nonstop6h 23m
Alaska Airlines
Deal found 4/20![Alaska Airlines logo]()
$149
This Kiwi.com deal was found by Cheapflights users on 4/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/310:53 am
BOS
- SEA
2 stops25h 34m
Frontier
Deal found 4/18![Frontier logo]()
$152
This United Airlines deal was found by Cheapflights users on 4/21. 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.
Mon 5/113:39 pm
PWM
- SEA
1 stop11h 20m
United Airlines
Deal found 4/21![United Airlines logo]()
$153
This American Airlines deal was found by Cheapflights users on 4/20. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/104:46 pm
BOS
- SEA
1 stop9h 13m
American Airlines
Deal found 4/20![American Airlines logo]()
$154
This American Airlines deal was found by Cheapflights users on 4/19. 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.
Tue 6/303:06 pm
BOS
- SEA
1 stop10h 52m
American Airlines
Deal found 4/19![American Airlines logo]()
$155
This Southwest deal was found by Cheapflights users on 4/21. 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 8/138:40 am
BOS
- SEA
1 stop16h 05m
Southwest
Deal found 4/21![Southwest logo]()
$157
This United Airlines deal was found by Cheapflights users on 4/20. 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.
Tue 5/55:45 am
BOS
- SEA
1 stop9h 03m
United Airlines
Deal found 4/20![United Airlines logo]()
$159
This Southwest deal was found by Cheapflights users on 4/20. 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.
Sat 6/64:50 pm
BOS
- SEA
2 stops11h 20m
Southwest
Deal found 4/20![Southwest logo]()
$161
This Kiwi.com deal was found by Cheapflights users on 4/19. 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.
Sun 5/310:25 am
BOS
- SEA
2 stops26h 02m
Multiple Airlines
Deal found 4/19![Multiple Airlines logo]()
$162
This Kiwi.com deal was found by Cheapflights users on 4/21. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/1312:01 pm
BOS
- SEA
2 stops24h 48m
Frontier
Deal found 4/21![Frontier logo]()
$163
Find flight deals from New Hampshire to Seattle
Keep the following information in mind while searching for New Hampshire to Seattle flight deals. Data was last updated April 22, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $216 (Southwest) |
One-way from | $134 (United Airlines) |
Popular in | December |
Cheapest in | September |
Average price | $417 |
Cheapflights Fare Finder
Customize your flight search to find flights from New Hampshire to Seattle that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated April 22, 2026.
Use the filters below to find and compare flights from New Hampshire to Seattle that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
BostonSeattle
BOS - SEA
BOSSEA
Boston Logan Intl
Thu 9/10
11:15 am-7:35 pm
1 stop11h 20m
Seattle/Tacoma Intl
Wed 9/16
5:30 pm-6:00 am
1 stop9h 30m
$278
BostonSeattle
BOS - SEA
BOSSEA
Boston Logan Intl
Sat 9/5
5:00 am-5:00 pm
1 stop15h 00m
Seattle/Tacoma Intl
Sun 9/13
5:25 pm-6:00 am
1 stop9h 35m
$350
BostonSeattle
BOS - SEA
BOSSEA
Boston Logan Intl
Thu 8/27
3:30 pm-7:00 pm
Nonstop6h 30m
Seattle/Tacoma Intl
Mon 8/31
10:00 pm-6:35 am
Nonstop5h 35m
$367
PortlandSeattle
PWM - SEA
PWMSEA
Portland
Tue 9/1
6:00 am-2:27 pm
1 stop11h 27m
Seattle/Tacoma Intl
Sat 9/12
6:00 pm-9:22 am
2 stops12h 22m
$368
ManchesterSeattle
MHT - SEA
MHTSEA
Manchester
Tue 8/11
5:35 am-1:05 pm
2 stops10h 30m
Seattle/Tacoma Intl
Tue 8/18
7:10 am-9:50 pm
2 stops11h 40m
$385
PortlandSeattle
PWM - SEA
PWMSEA
Portland
Thu 6/4
12:50 pm-12:10 am
2 stops14h 20m
Seattle/Tacoma Intl
Thu 6/11
11:59 pm-2:19 pm
2 stops11h 20m
$387
PortlandSeattle
PWM - SEA
PWMSEA
Portland
Thu 6/4
6:25 pm-11:59 pm
1 stop8h 34m
Seattle/Tacoma Intl
Thu 6/11
1:00 pm-11:51 pm
1 stop7h 51m
$393
BostonSeattle
BOS - SEA
BOSSEA
Boston Logan Intl
Wed 9/2
3:28 pm-6:46 pm
Nonstop6h 18m
Seattle/Tacoma Intl
Thu 9/24
3:48 pm-6:09 am
1 stop11h 21m
$402
BostonSeattle
BOS - SEA
BOSSEA
Boston Logan Intl
Fri 9/18
6:10 pm-9:23 am
1 stop18h 13m
Seattle/Tacoma Intl
Sat 9/26
10:04 am-6:09 am
1 stop17h 05m
$407
Quickest round-trip
BostonSeattle
BOS - SEA
BOSSEA
Boston Logan Intl
Mon 5/4
6:45 pm-10:05 pm
Nonstop6h 20m
Seattle/Tacoma Intl
Wed 5/13
4:10 pm-12:40 am
Nonstop5h 30m
$412
Showing 1-10 of 60 resultsSorted by cheapest first
Best time to book a flight from New Hampshire to Seattle
Have a flexible travel schedule? Discover the best time to fly to Seattle from New Hampshire with our price prediction graph.
BOS-SEA
PWM-SEA
LEB-SEA
MHT-SEA
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Cheapflights Insights
Everything you need to know about your flight from New Hampshire to Seattle
USNH-SEA
BOS-SEA
PWM-SEA
LEB-SEA
MHT-SEA
What is the cheapest month to book a flight from New Hampshire to Seattle?
Currently, October is the cheapest month in which you can book a flight from New Hampshire to Seattle (average of $98). Flying from New Hampshire to Seattle in March is currently the most expensive (average of $542). 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 New Hampshire to Seattle?
Related info for your journey
Find useful and relevant information for your journey from New Hampshire to Seattle. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Traveling to a place near Seattle?
Book flights to Seattle if you plan to visit one of these locationsSeaTac
Tacoma
Ocean Shores
Olympia
Lynnwood
Lacey
Edmonds
Leavenworth
Snoqualmie
Kent
Tumwater
Tukwila
Puyallup
Renton
Kirkland
Ellensburg
Fife
Lakewood
Issaquah
Shoreline
Browse thousands of different options on Cheapflights for your next trip
Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.
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Complete your trip
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Alternative routes for New Hampshire to Seattle
See prices for flight routes from nearby airports that may be better suited for you.
Complete your trip
Complete your trip to Seattle by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from New Hampshire to Seattle by cabin class
Find flights from New Hampshire to Seattle, based on your preferred cabin class, be it economy, premium economy, business, or first class.
New Hampshire and Seattle flights
Browse other New Hampshire and Seattle flight options. Last updated on April 22, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Other flights to Seattle
Explore flights to Seattle departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on April 22, 2026.
New Hampshire to Seattle flights
Consider these flights traveling from New Hampshire to Seattle.
Top 4 airlines flying from New Hampshire to Seattle
Discover the top 4 airlines that operate flights from New Hampshire to Seattle. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated April 22, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$342 | Average$456 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$344 | Average$529 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$347 | Average$796 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$379 | Average$446 | FlexibilityNo cancel fee | On-time63% |