$126+ Cheap flights from Seattle (SEA) to New Hampshire
This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 3/5. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — MHT
Mar 6 — Mar 131
1 adult, Economy
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Find cheap flights from Seattle to New Hampshire with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
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Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from Seattle to New Hampshire
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Cheapest flights from Seattle to New HampshireExplore the most affordable flight options available from Seattle to New Hampshire. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 4, 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 February 4, 2026.
This American Airlines deal was found by Cheapflights users on 2/1. Clicking the “Pick Dates” 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 3/210:57 pm
SEA
- PWM
1 stop10h 22m
American Airlines
Mon 3/96:00 pm
PWM
- SEA
1 stop9h 24m
American Airlines
Deal found 2/1![American Airlines logo]()
$241
This Delta deal was found by Cheapflights users on 2/1. Clicking the “Pick Dates” 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 3/211:15 pm
SEA
- PWM
2 stops9h 03m
Delta
Mon 3/95:23 am
PWM
- SEA
1 stop11h 32m
Delta
Deal found 2/1![Delta logo]()
$273
This United Airlines deal was found by Cheapflights users on 2/3. Clicking the “Pick Dates” 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 2/195:00 am
SEA
- BOS
1 stop7h 35m
United Airlines
Sat 2/284:25 pm
BOS
- SEA
1 stop9h 18m
United Airlines
Deal found 2/3![United Airlines logo]()
$282
This United Airlines deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” 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 5/207:05 pm
SEA
- BOS
1 stop7h 59m
United Airlines
Tue 6/96:00 am
BOS
- SEA
1 stop8h 57m
United Airlines
Deal found 2/2![United Airlines logo]()
$285
This Cheapflightsfares deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” 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.
Thu 5/2811:59 pm
SEA
- BOS
1 stop11h 21m
JetBlue
Tue 6/27:00 am
BOS
- SEA
Nonstop6h 20m
JetBlue
Deal found 2/2![JetBlue logo]()
$286
This JetBlue deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” 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.
Thu 5/1411:59 pm
SEA
- BOS
1 stop11h 17m
JetBlue
Wed 5/277:00 am
BOS
- SEA
Nonstop6h 20m
JetBlue
Deal found 2/2![JetBlue logo]()
$287
This American Airlines deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” 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 3/1112:07 am
SEA
- BOS
1 stop8h 21m
American Airlines
Wed 3/184:40 pm
BOS
- SEA
1 stop9h 24m
American Airlines
Deal found 2/2![American Airlines logo]()
$290
This Alaska Airlines deal was found by Cheapflights users on 2/1. Clicking the “Pick Dates” 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 5/193:02 pm
SEA
- BOS
1 stop11h 47m
Alaska Airlines
Sat 5/238:05 am
BOS
- SEA
1 stop13h 10m
Alaska Airlines
Deal found 2/1![Alaska Airlines logo]()
$292
This Alaska Airlines deal was found by Cheapflights users on 2/3. Clicking the “Pick Dates” 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 5/193:27 pm
SEA
- BOS
Nonstop5h 32m
Alaska Airlines
Wed 5/276:00 am
BOS
- SEA
1 stop8h 53m
Alaska Airlines
Deal found 2/3![Alaska Airlines logo]()
$297
This United Airlines deal was found by Cheapflights users on 2/3. Clicking the “Pick Dates” 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 2/108:10 am
SEA
- PWM
2 stops12h 17m
United Airlines
Thu 2/126:00 am
PWM
- SEA
2 stops16h 03m
United Airlines
Deal found 2/3![United Airlines logo]()
$300
This Kiwi.com deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” 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 3/23:42 pm
SEA
- BOS
Nonstop5h 17m
Hawaiian Airlines
Mon 3/97:00 am
BOS
- SEA
Nonstop6h 33m
Hawaiian Airlines
Deal found 2/2![Hawaiian Airlines logo]()
$300
This American Airlines deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” 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 5/298:20 am
SEA
- PWM
1 stop10h 24m
American Airlines
Tue 6/25:36 pm
PWM
- SEA
1 stop10h 21m
American Airlines
Deal found 2/2![American Airlines logo]()
$301
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 February 4, 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 February 4, 2026.
This Delta deal was found by Cheapflights users on 2/1. Clicking the “Pick Dates” 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 3/211:15 pm
SEA
- PWM
2 stops9h 03m
Delta
Mon 3/95:23 am
PWM
- SEA
1 stop11h 32m
Delta
Deal found 2/1![Delta logo]()
$273
This Alaska Airlines deal was found by Cheapflights users on 2/1. Clicking the “Pick Dates” 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 5/193:02 pm
SEA
- BOS
1 stop11h 47m
Alaska Airlines
Sat 5/238:05 am
BOS
- SEA
1 stop13h 10m
Alaska Airlines
Deal found 2/1![Alaska Airlines logo]()
$292
This American Airlines deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” 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 3/210:57 pm
SEA
- PWM
1 stop10h 22m
American Airlines
Mon 3/96:00 pm
PWM
- SEA
1 stop9h 24m
American Airlines
Deal found 2/2![American Airlines logo]()
$295
This United Airlines deal was found by Cheapflights users on 2/1. Clicking the “Pick Dates” 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 5/811:48 pm
SEA
- BOS
1 stop8h 13m
United Airlines
Mon 5/116:34 pm
BOS
- SEA
1 stop8h 23m
United Airlines
Deal found 2/1![United Airlines logo]()
$297
This Southwest deal was found by Cheapflights users on 2/3. Clicking the “Pick Dates” 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 5/11:55 pm
SEA
- BOS
1 stop7h 55m
Southwest
Tue 5/52:25 pm
BOS
- SEA
2 stops12h 10m
Southwest
Deal found 2/3![Southwest logo]()
$307
This Delta deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” 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 5/2911:59 pm
SEA
- PWM
2 stops8h 58m
Delta
Tue 6/212:52 pm
PWM
- SEA
1 stop10h 47m
Delta
Deal found 2/2![Delta logo]()
$273
This Alaska Airlines deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” 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 3/1110:40 pm
SEA
- BOS
Nonstop5h 14m
Alaska Airlines
Tue 3/316:00 am
BOS
- SEA
1 stop8h 13m
Alaska Airlines
Deal found 2/2![Alaska Airlines logo]()
$297
This American Airlines deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” 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
2 stops9h 43m
American Airlines
Mon 6/15:36 pm
PWM
- SEA
1 stop10h 21m
American Airlines
Deal found 2/2![American Airlines logo]()
$322
This Delta deal was found by Cheapflights users on 2/1. Clicking the “Pick Dates” 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 5/911:00 pm
SEA
- BOS
Nonstop5h 35m
Delta
Mon 5/117:30 pm
BOS
- SEA
Nonstop6h 09m
Delta
Deal found 2/1![Delta logo]()
$297
This Expedia deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” 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 2/168:15 am
SEA
- LEB
1 stop7h 30m
Multiple Airlines
Fri 2/207:00 am
LEB
- SEA
1 stop8h 35m
Multiple Airlines
Deal found 2/2![Multiple Airlines logo]()
$670
This United Airlines deal was found by Cheapflights users on 2/3. Clicking the “Pick Dates” 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 2/197:15 am
SEA
- PWM
2 stops13h 05m
United Airlines
Wed 2/254:15 pm
PWM
- SEA
1 stop9h 28m
United Airlines
Deal found 2/3![United Airlines logo]()
$345
This Delta deal was found by Cheapflights users on 2/3. Clicking the “Pick Dates” 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.
Sun 5/174:05 pm
SEA
- BOS
Nonstop5h 32m
Delta
Wed 5/2711:40 am
BOS
- SEA
Nonstop6h 09m
Delta
Deal found 2/3![Delta logo]()
$297
This Southwest deal was found by Cheapflights users on 2/1. Clicking the “Pick Dates” 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 3/26:05 am
SEA
- PWM
2 stops13h 40m
Southwest
Mon 3/92:50 pm
PWM
- SEA
2 stops12h 40m
Southwest
Deal found 2/1![Southwest logo]()
$364
This United Airlines deal was found by Cheapflights users on 2/3. Clicking the “Pick Dates” 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 4/148:00 am
SEA
- MHT
1 stop7h 56m
United Airlines
Wed 4/222:30 pm
MHT
- SEA
1 stop9h 23m
United Airlines
Deal found 2/3![United Airlines logo]()
$359
This Delta deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” 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 5/264:05 pm
SEA
- BOS
Nonstop5h 32m
Delta
Wed 6/33:55 pm
BOS
- SEA
Nonstop6h 08m
Delta
Deal found 2/2![Delta logo]()
$297
This Southwest deal was found by Cheapflights users on 2/3. Clicking the “Pick Dates” 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 4/1411:45 pm
SEA
- MHT
2 stops9h 25m
Southwest
Wed 4/223:45 pm
MHT
- SEA
2 stops11h 25m
Southwest
Deal found 2/3![Southwest logo]()
$369
This American Airlines deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” 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 5/1311:28 pm
SEA
- MHT
1 stop9h 09m
American Airlines
Tue 5/195:41 pm
MHT
- SEA
1 stop10h 10m
American Airlines
Deal found 2/2![American Airlines logo]()
$376
This Delta deal was found by Cheapflights users on 2/3. Clicking the “Pick Dates” 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 5/204:05 pm
SEA
- BOS
Nonstop5h 32m
Delta
Wed 5/277:30 pm
BOS
- SEA
Nonstop6h 09m
Delta
Deal found 2/3![Delta logo]()
$297
This Delta deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” 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 4/33:45 pm
SEA
- BOS
Nonstop5h 14m
Delta
Mon 4/66:45 pm
BOS
- SEA
Nonstop6h 25m
Delta
Deal found 2/2![Delta logo]()
$307
This Southwest deal was found by Cheapflights users on 2/3. Clicking the “Pick Dates” 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 5/215:15 am
SEA
- MHT
1 stop7h 45m
Southwest
Mon 5/257:10 pm
MHT
- SEA
1 stop7h 55m
Southwest
Deal found 2/3![Southwest logo]()
$437
This Delta deal was found by Cheapflights users on 2/3. Clicking the “Pick Dates” 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 3/510:20 pm
SEA
- BOS
Nonstop5h 30m
Delta
Sun 3/87:10 am
BOS
- SEA
Nonstop6h 25m
Delta
Deal found 2/3![Delta logo]()
$307
This United Airlines deal was found by Cheapflights users on 2/1. Clicking the “Pick Dates” 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 6/241:00 pm
SEA
- MHT
1 stop7h 59m
United Airlines
Mon 6/299:40 am
MHT
- SEA
1 stop9h 00m
United Airlines
Deal found 2/1![United Airlines logo]()
$467
This American Airlines deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” 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 4/711:28 pm
SEA
- MHT
1 stop9h 09m
American Airlines
Thu 4/95:41 pm
MHT
- SEA
1 stop10h 10m
American Airlines
Deal found 2/2![American Airlines logo]()
$485
This Southwest deal was found by Cheapflights users on 2/3. Clicking the “Pick Dates” 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 4/246:15 pm
SEA
- MHT
2 stops10h 45m
Southwest
Sun 4/267:00 pm
MHT
- SEA
1 stop8h 10m
Southwest
Deal found 2/3![Southwest logo]()
$442
This Delta deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” 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 3/176:00 am
SEA
- BOS
1 stop10h 46m
Delta
Sat 3/286:45 pm
BOS
- SEA
Nonstop6h 25m
Delta
Deal found 2/2![Delta logo]()
$310
This Delta deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” 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 3/116:00 am
SEA
- BOS
1 stop10h 46m
Delta
Wed 3/256:45 pm
BOS
- SEA
Nonstop6h 25m
Delta
Deal found 2/2![Delta logo]()
$310
This Expedia deal was found by Cheapflights users on 2/3. Clicking the “Pick Dates” 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.
Thu 2/1910:40 pm
SEA
- LEB
1 stop8h 13m
Multiple Airlines
Mon 2/234:00 pm
LEB
- SEA
1 stop9h 00m
Multiple Airlines
Deal found 2/3![Multiple Airlines logo]()
$670
This Southwest deal was found by Cheapflights users on 2/1. Clicking the “Pick Dates” 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 6/245:00 am
SEA
- MHT
2 stops9h 40m
Southwest
Mon 6/295:35 am
MHT
- SEA
2 stops11h 20m
Southwest
Deal found 2/1![Southwest logo]()
$467
This Delta deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” 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 2/172:00 pm
SEA
- PWM
1 stop7h 18m
Delta
Wed 2/182:35 pm
PWM
- SEA
1 stop10h 47m
Delta
Deal found 2/2![Delta logo]()
$330
Last-minute flights from Seattle to New HampshireDiscover last-minute flight deals from Seattle to New Hampshire. Data last updated February 4, 2026 and is based on user searches.
Discover last-minute flight deals from Seattle to New Hampshire. Data last updated February 4, 2026 and is based on user searches.
This United Airlines deal was found by Cheapflights users on 2/3. Clicking the “Pick Dates” 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 2/108:10 am
SEA
- PWM
2 stops12h 17m
United Airlines
Thu 2/126:00 am
PWM
- SEA
2 stops16h 03m
United Airlines
Deal found 2/3![United Airlines logo]()
$300
This United Airlines deal was found by Cheapflights users on 2/3. Clicking the “Pick Dates” 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 2/195:00 am
SEA
- BOS
1 stop7h 35m
United Airlines
Sat 2/284:25 pm
BOS
- SEA
1 stop9h 18m
United Airlines
Deal found 2/3![United Airlines logo]()
$282
This Delta deal was found by Cheapflights users on 2/4. Clicking the “Pick Dates” 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 2/2510:20 pm
SEA
- BOS
Nonstop5h 30m
Delta
Mon 3/28:59 pm
BOS
- SEA
1 stop17h 06m
Delta
Deal found 2/4![Delta logo]()
$305
This Delta deal was found by Cheapflights users on 2/4. Clicking the “Pick Dates” 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 2/267:25 am
SEA
- BOS
2 stops13h 25m
Delta
Sat 2/287:15 am
BOS
- SEA
Nonstop6h 30m
Delta
Deal found 2/4![Delta logo]()
$300
This American Airlines deal was found by Cheapflights users on 2/4. Clicking the “Pick Dates” 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 2/2812:07 am
SEA
- BOS
1 stop8h 21m
American Airlines
Wed 3/45:31 pm
BOS
- SEA
1 stop9h 53m
American Airlines
Deal found 2/4![American Airlines logo]()
$292
This American Airlines deal was found by Cheapflights users on 2/1. Clicking the “Pick Dates” 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 3/210:57 pm
SEA
- PWM
1 stop10h 22m
American Airlines
Mon 3/96:00 pm
PWM
- SEA
1 stop9h 24m
American Airlines
Deal found 2/1![American Airlines logo]()
$241
This Delta deal was found by Cheapflights users on 2/1. Clicking the “Pick Dates” 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 3/211:15 pm
SEA
- PWM
2 stops9h 03m
Delta
Mon 3/95:23 am
PWM
- SEA
1 stop11h 32m
Delta
Deal found 2/1![Delta logo]()
$273
This Southwest deal was found by Cheapflights users on 2/3. Clicking the “Pick Dates” 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 3/38:45 am
SEA
- BOS
2 stops10h 45m
Southwest
Tue 3/104:40 pm
BOS
- SEA
1 stop8h 50m
Southwest
Deal found 2/3![Southwest logo]()
$302
This Delta deal was found by Cheapflights users on 2/1. Clicking the “Pick Dates” 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 3/32:00 pm
SEA
- BOS
1 stop12h 40m
Delta
Mon 3/96:50 pm
BOS
- SEA
Nonstop6h 20m
Delta
Deal found 2/1![Delta logo]()
$306
This American Airlines deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” 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 3/1112:07 am
SEA
- BOS
1 stop8h 21m
American Airlines
Wed 3/184:40 pm
BOS
- SEA
1 stop9h 24m
American Airlines
Deal found 2/2![American Airlines logo]()
$290
This Delta deal was found by Cheapflights users on 2/3. Clicking the “Pick Dates” 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 3/123:45 pm
SEA
- BOS
Nonstop5h 14m
Delta
Mon 3/166:45 pm
BOS
- SEA
Nonstop6h 25m
Delta
Deal found 2/3![Delta logo]()
$307
This Delta deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” 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.
Sun 3/153:45 pm
SEA
- BOS
Nonstop5h 14m
Delta
Sat 3/286:45 pm
BOS
- SEA
Nonstop6h 25m
Delta
Deal found 2/2![Delta logo]()
$297
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 February 4, 2026.
Search for one-way flight options from Seattle to New Hampshire. Find affordable one-way fares based on user searches. Data last updated February 4, 2026.
This United Airlines deal was found by Cheapflights users on 2/3. Clicking the “Pick Dates” 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 3/57:00 am
SEA
- PWM
2 stops12h 51m
United Airlines
Deal found 2/3![United Airlines logo]()
$126
This Southwest deal was found by Cheapflights users on 2/3. Clicking the “Pick Dates” 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 4/217:10 pm
SEA
- BOS
2 stops10h 05m
Southwest
Deal found 2/3![Southwest logo]()
$144
This Kiwi.com deal was found by Cheapflights users on 2/4. Clicking the “Pick Dates” 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 3/239:36 pm
SEA
- BOS
2 stops38h 52m
Multiple Airlines
Deal found 2/4![Multiple Airlines logo]()
$147
This Delta deal was found by Cheapflights users on 2/3. Clicking the “Pick Dates” 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 5/1810:35 pm
SEA
- PWM
1 stop11h 09m
Delta
Deal found 2/3![Delta logo]()
$148
This Kiwi.com deal was found by Cheapflights users on 2/3. Clicking the “Pick Dates” 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 3/29:28 am
SEA
- BOS
3 stops28h 17m
Multiple Airlines
Deal found 2/3![Multiple Airlines logo]()
$148
This United Airlines deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” 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 2/2311:59 pm
SEA
- BOS
1 stop9h 47m
United Airlines
Deal found 2/2![United Airlines logo]()
$149
This Kiwi.com deal was found by Cheapflights users on 2/3. Clicking the “Pick Dates” 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 3/510:40 pm
SEA
- BOS
Nonstop5h 14m
Hawaiian Airlines
Deal found 2/3![Hawaiian Airlines logo]()
$150
This Cheapflightsfares deal was found by Cheapflights users on 2/3. Clicking the “Pick Dates” 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 5/2011:30 am
SEA
- BOS
Nonstop5h 35m
JetBlue
Deal found 2/3![JetBlue logo]()
$153
This Delta deal was found by Cheapflights users on 2/3. Clicking the “Pick Dates” 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 4/23:45 pm
SEA
- BOS
Nonstop5h 14m
Delta
Deal found 2/3![Delta logo]()
$154
This Kiwi.com deal was found by Cheapflights users on 2/3. Clicking the “Pick Dates” 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 3/29:14 pm
SEA
- BOS
2 stops24h 59m
Frontier
Deal found 2/3![Frontier logo]()
$155
This Kiwi.com deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” 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.
Tue 3/316:24 pm
SEA
- BOS
2 stops18h 04m
Multiple Airlines
Deal found 2/2![Multiple Airlines logo]()
$156
This United Airlines deal was found by Cheapflights users on 2/3. Clicking the “Pick Dates” 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 6/610:40 pm
SEA
- BOS
1 stop7h 59m
United Airlines
Deal found 2/3![United Airlines logo]()
$157
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 February 4, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $241 (American Airlines) |
One-way from | $126 (United Airlines) |
Popular in | December |
Cheapest in | March |
Average price | $319 |
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 February 4, 2026.
Use the filters below to find and compare flights from Seattle to New Hampshire that are best for you.
Fly from
Seattle
Fly to
New Hampshire
Route
Depart
Return
Price
SeattlePortland
SEA - PWM
SEAPWM
Seattle/Tacoma Intl
Mon 3/2
11:15 pm-11:18 am
2 stops9h 03m
Portland
Mon 3/9
5:23 am-1:55 pm
1 stop11h 32m
$273
SeattlePortland
SEA - PWM
SEAPWM
Seattle/Tacoma Intl
Fri 5/29
11:59 pm-11:57 am
2 stops8h 58m
Portland
Tue 6/2
12:52 pm-8:39 pm
1 stop10h 47m
$273
SeattleBoston
SEA - BOS
SEABOS
Seattle/Tacoma Intl
Tue 5/19
3:02 pm-5:49 am
1 stop11h 47m
Boston Logan Intl
Sat 5/23
8:05 am-6:15 pm
1 stop13h 10m
$292
SeattlePortland
SEA - PWM
SEAPWM
Seattle/Tacoma Intl
Mon 3/2
10:57 pm-12:19 pm
1 stop10h 22m
Portland
Mon 3/9
6:00 pm-12:24 am
1 stop9h 24m
$295
SeattleBoston
SEA - BOS
SEABOS
Seattle/Tacoma Intl
Fri 5/8
11:48 pm-11:01 am
1 stop8h 13m
Boston Logan Intl
Mon 5/11
6:34 pm-11:57 pm
1 stop8h 23m
$297
SeattleBoston
SEA - BOS
SEABOS
Seattle/Tacoma Intl
Wed 3/11
10:40 pm-6:54 am
Nonstop5h 14m
Boston Logan Intl
Tue 3/31
6:00 am-11:13 am
1 stop8h 13m
$297
SeattleBoston
SEA - BOS
SEABOS
Seattle/Tacoma Intl
Sat 5/9
11:00 pm-7:35 am
Nonstop5h 35m
Boston Logan Intl
Mon 5/11
7:30 pm-10:39 pm
Nonstop6h 09m
$297
SeattleBoston
SEA - BOS
SEABOS
Seattle/Tacoma Intl
Sun 5/17
4:05 pm-12:37 am
Nonstop5h 32m
Boston Logan Intl
Wed 5/27
11:40 am-2:49 pm
Nonstop6h 09m
$297
SeattleBoston
SEA - BOS
SEABOS
Seattle/Tacoma Intl
Tue 5/26
4:05 pm-12:37 am
Nonstop5h 32m
Boston Logan Intl
Wed 6/3
3:55 pm-7:03 pm
Nonstop6h 08m
$297
SeattleBoston
SEA - BOS
SEABOS
Seattle/Tacoma Intl
Wed 5/20
4:05 pm-12:37 am
Nonstop5h 32m
Boston Logan Intl
Wed 5/27
7:30 pm-10:39 pm
Nonstop6h 09m
$297
Showing 1-10 of 58 results
Best time to book a flight from Seattle to New Hampshire
Have a flexible travel schedule? Discover the best time to fly to New Hampshire from Seattle with our price prediction graph.
SEA-PWM
SEA-BOS
SEA-LEB
SEA-MHT
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Cheapflights Insights
Everything you need to know about your flight from Seattle to New Hampshire
SEA-USNH
SEA-PWM
SEA-BOS
SEA-LEB
SEA-MHT
What is the cheapest month to book a flight from Seattle to New Hampshire?
Currently, September is the cheapest month in which you can book a flight from Seattle to New Hampshire (average of $137). Flying from Seattle to New Hampshire in April is currently the most expensive (average of $916). 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.
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 February 4, 2026.
Read reviews from past customers who have flown Southwest, United Airlines, and American Airlines from Seattle to New Hampshire. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Boarding
8.1
Food
7.0
Comfort
8.0
Entertainment
7.5
Crew
8.6
Overall
8.0
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Boarding
8.1
Food
7.0
Comfort
8.0
Entertainment
7.5
Crew
8.6
Overall
8.0
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Boarding
8.1
Food
7.0
Comfort
8.0
Entertainment
7.5
Crew
8.6
Overall
8.0
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Boarding
8.1
Food
7.0
Comfort
8.0
Entertainment
7.5
Crew
8.6
Overall
8.0
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Related info for your journey
Find useful and relevant information for your journey from Seattle to New Hampshire. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
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Alternative routes for Seattle to New Hampshire
See prices for flight routes from nearby airports that may be better suited for you.
Complete your trip
Complete your trip to New Hampshire by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Seattle to New Hampshire by cabin class
Find flights from Seattle to New Hampshire, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Seattle and New Hampshire flights
Browse other Seattle and New Hampshire flight options. Last updated on February 4, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Seattle to New Hampshire flights
Consider these flights traveling from Seattle to New Hampshire.
Top 3 airlines flying from Seattle to New Hampshire
Discover the top 3 airlines that operate flights from Seattle to New Hampshire. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated February 4, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$328 | Average$429 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$333 | Average$543 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$377 | Average$516 | FlexibilityNo cancel fee | On-time63% |