$127+ 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 5/3. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — MHT
May 8 — May 151
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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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 April 8, 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 8, 2026.
This SmartFares deal was found by Cheapflights users on 4/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure SmartFares 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 4/5![JetBlue logo]()
$249
This SmartFares deal was found by Cheapflights users on 4/4. 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 SmartFares 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
Tue 5/267:00 am
BOS
- SEA
Nonstop6h 17m
JetBlue
Deal found 4/4![JetBlue logo]()
$254
This Cheapflightsfares deal was found by Cheapflights users on 4/6. Clicking the “Pick Dates” 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 37m
JetBlue
Wed 5/277:00 am
BOS
- SEA
Nonstop6h 17m
JetBlue
Deal found 4/6![JetBlue logo]()
$262
This KAYAK deal was found by Cheapflights users on 4/6. Clicking the “Pick Dates” 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 5/2311:35 am
SEA
- BOS
Nonstop5h 39m
JetBlue
Tue 6/27:00 am
BOS
- SEA
Nonstop6h 17m
JetBlue
Deal found 4/6![JetBlue logo]()
$265
This Southwest deal was found by Cheapflights users on 4/7. Clicking the “Pick Dates” 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 5/56:00 am
SEA
- BOS
1 stop7h 05m
Southwest
Tue 5/122:25 pm
BOS
- SEA
2 stops12h 30m
Southwest
Deal found 4/7![Southwest logo]()
$268
This American Airlines deal was found by Cheapflights users on 4/6. Clicking the “Pick Dates” 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 5/51:19 pm
SEA
- PWM
1 stop7h 54m
American Airlines
Tue 5/126:01 pm
PWM
- SEA
1 stop9h 35m
American Airlines
Deal found 4/6![American Airlines logo]()
$291
This American Airlines deal was found by Cheapflights users on 4/5. Clicking the “Pick Dates” 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 5/412:34 pm
SEA
- PWM
1 stop7h 53m
American Airlines
Sat 5/96:00 am
PWM
- SEA
1 stop8h 34m
American Airlines
Deal found 4/5![American Airlines logo]()
$306
This United Airlines deal was found by Cheapflights users on 4/6. Clicking the “Pick Dates” 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 5/11:07 pm
SEA
- PWM
1 stop7h 52m
United Airlines
Mon 5/44:50 pm
PWM
- SEA
1 stop8h 57m
United Airlines
Deal found 4/6![United Airlines logo]()
$321
This Delta deal was found by Cheapflights users on 4/5. Clicking the “Pick Dates” 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 4/1411:14 pm
SEA
- PWM
2 stops11h 57m
Delta
Wed 4/225:21 am
PWM
- SEA
2 stops11h 56m
Delta
Deal found 4/5![Delta logo]()
$331
This Delta deal was found by Cheapflights users on 4/5. Clicking the “Pick Dates” 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 5/311:59 pm
SEA
- PWM
2 stops12h 58m
Delta
Sat 5/94:49 pm
PWM
- SEA
1 stop8h 59m
Delta
Deal found 4/5![Delta logo]()
$336
This Delta deal was found by Cheapflights users on 4/5. Clicking the “Pick Dates” 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 5/311:59 pm
SEA
- PWM
2 stops12h 58m
Delta
Tue 5/511:35 am
PWM
- SEA
2 stops13h 14m
Delta
Deal found 4/5![Delta logo]()
$342
This American Airlines deal was found by Cheapflights users on 4/7. Clicking the “Pick Dates” 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 5/2710:50 am
SEA
- MHT
1 stop9h 06m
American Airlines
Wed 6/35:59 pm
MHT
- SEA
1 stop9h 17m
American Airlines
Deal found 4/7![American Airlines logo]()
$375
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 8, 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 8, 2026.
This Delta deal was found by Cheapflights users on 4/7. Clicking the “Pick Dates” 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 5/125:30 am
SEA
- PWM
1 stop7h 37m
Delta
Fri 5/152:38 pm
PWM
- SEA
1 stop11h 07m
Delta
Deal found 4/7![Delta logo]()
$351
This Southwest deal was found by Cheapflights users on 4/4. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/15:15 am
SEA
- BOS
1 stop8h 55m
Southwest
Wed 5/62:25 pm
BOS
- SEA
2 stops12h 10m
Southwest
Deal found 4/4![Southwest logo]()
$357
This United Airlines deal was found by Cheapflights users on 4/3. 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 5/911:53 pm
SEA
- PWM
1 stop7h 30m
United Airlines
Tue 5/124:50 pm
PWM
- SEA
1 stop8h 57m
United Airlines
Deal found 4/3![United Airlines logo]()
$401
This American Airlines deal was found by Cheapflights users on 4/2. 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.
Sat 4/1811:16 am
SEA
- MHT
1 stop8h 35m
American Airlines
Wed 4/226:46 am
MHT
- SEA
1 stop10h 41m
American Airlines
Deal found 4/2![American Airlines logo]()
$577
This Delta deal was found by Cheapflights users on 4/4. 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.
Tue 6/25:30 am
SEA
- PWM
2 stops14h 39m
Delta
Tue 6/1611:02 am
PWM
- SEA
2 stops12h 23m
Delta
Deal found 4/4![Delta logo]()
$356
This Southwest deal was found by Cheapflights users on 4/5. Clicking the “Pick Dates” 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 9/15:20 am
SEA
- BOS
1 stop7h 50m
Southwest
Sat 9/125:30 am
BOS
- SEA
2 stops10h 40m
Southwest
Deal found 4/5![Southwest logo]()
$357
This Expedia deal was found by Cheapflights users on 4/3. 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.
Sat 4/1810:15 pm
SEA
- LEB
1 stop12h 29m
Multiple Airlines
Wed 4/2210:48 am
LEB
- SEA
1 stop14h 11m
Multiple Airlines
Deal found 4/3![Multiple Airlines logo]()
$790
This Delta deal was found by Cheapflights users on 4/3. 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 5/1011:00 pm
SEA
- BOS
Nonstop5h 35m
Delta
Fri 9/43:30 pm
BOS
- SEA
Nonstop6h 30m
Delta
Deal found 4/3![Delta logo]()
$367
This Southwest deal was found by Cheapflights users on 4/5. Clicking the “Pick Dates” 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 5/611:45 pm
SEA
- PWM
2 stops11h 25m
Southwest
Mon 5/112:50 pm
PWM
- SEA
2 stops13h 05m
Southwest
Deal found 4/5![Southwest logo]()
$395
This United Airlines deal was found by Cheapflights users on 4/6. Clicking the “Pick Dates” 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 4/2112:08 pm
SEA
- PWM
1 stop8h 20m
United Airlines
Sat 4/252:12 pm
PWM
- SEA
2 stops12h 47m
United Airlines
Deal found 4/6![United Airlines logo]()
$436
This Delta deal was found by Cheapflights users on 4/3. 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.
Sat 5/165:30 am
SEA
- PWM
2 stops14h 39m
Delta
Sat 5/234:49 pm
PWM
- SEA
1 stop8h 59m
Delta
Deal found 4/3![Delta logo]()
$385
This Southwest deal was found by Cheapflights users on 4/4. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/196:00 am
SEA
- BOS
1 stop9h 35m
Southwest
Tue 5/267:20 am
BOS
- SEA
2 stops12h 35m
Southwest
Deal found 4/4![Southwest logo]()
$397
This United Airlines deal was found by Cheapflights users on 4/5. Clicking the “Pick Dates” 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 5/27:00 am
SEA
- PWM
2 stops13h 59m
United Airlines
Sat 5/99:20 am
PWM
- SEA
2 stops14h 46m
United Airlines
Deal found 4/5![United Airlines logo]()
$452
This Delta deal was found by Cheapflights users on 4/5. Clicking the “Pick Dates” 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 6/123:59 pm
SEA
- BOS
Nonstop5h 19m
Delta
Sun 6/217:25 pm
BOS
- SEA
Nonstop6h 24m
Delta
Deal found 4/5![Delta logo]()
$392
This United Airlines deal was found by Cheapflights users on 4/3. 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.
Fri 6/510:40 pm
SEA
- BOS
2 stops11h 52m
United Airlines
Tue 6/911:00 am
BOS
- SEA
1 stop11h 36m
United Airlines
Deal found 4/3![United Airlines logo]()
$455
This Southwest deal was found by Cheapflights users on 4/6. Clicking the “Pick Dates” 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 6/55:30 am
SEA
- PWM
1 stop13h 40m
Southwest
Sun 6/75:30 am
PWM
- SEA
2 stops11h 55m
Southwest
Deal found 4/6![Southwest logo]()
$421
This Delta deal was found by Cheapflights users on 4/3. 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 5/1111:00 pm
SEA
- BOS
Nonstop5h 35m
Delta
Fri 5/157:30 pm
BOS
- SEA
Nonstop6h 10m
Delta
Deal found 4/3![Delta logo]()
$392
This United Airlines deal was found by Cheapflights users on 4/5. Clicking the “Pick Dates” 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 4/2211:59 pm
SEA
- BOS
1 stop8h 02m
United Airlines
Sat 4/255:30 am
BOS
- SEA
1 stop12h 16m
United Airlines
Deal found 4/5![United Airlines logo]()
$455
This Southwest deal was found by Cheapflights users on 4/6. Clicking the “Pick Dates” 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 6/255:30 am
SEA
- BOS
1 stop10h 50m
Southwest
Tue 6/305:30 pm
BOS
- SEA
1 stop9h 50m
Southwest
Deal found 4/6![Southwest logo]()
$437
This Delta deal was found by Cheapflights users on 4/5. Clicking the “Pick Dates” 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 5/75:30 am
SEA
- PWM
1 stop7h 37m
Delta
Thu 5/144:48 pm
PWM
- SEA
1 stop9h 00m
Delta
Deal found 4/5![Delta logo]()
$400
This United Airlines deal was found by Cheapflights users on 4/2. 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.
Tue 5/58:10 am
SEA
- MHT
1 stop7h 46m
United Airlines
Wed 5/62:36 pm
MHT
- SEA
1 stop9h 17m
United Airlines
Deal found 4/2![United Airlines logo]()
$485
This Delta deal was found by Cheapflights users on 4/7. Clicking the “Pick Dates” 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 5/134:10 pm
SEA
- BOS
Nonstop5h 30m
Delta
Mon 5/257:48 am
BOS
- SEA
Nonstop6h 07m
Delta
Deal found 4/7![Delta logo]()
$412
This Southwest deal was found by Cheapflights users on 4/6. Clicking the “Pick Dates” 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 5/298:00 am
SEA
- MHT
2 stops10h 55m
Southwest
Thu 6/117:00 pm
MHT
- SEA
1 stop8h 25m
Southwest
Deal found 4/6![Southwest logo]()
$462
This Southwest deal was found by Cheapflights users on 4/2. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/285:15 am
SEA
- MHT
1 stop7h 45m
Southwest
Sun 5/317:00 pm
MHT
- SEA
1 stop8h 10m
Southwest
Deal found 4/2![Southwest logo]()
$469
This Southwest deal was found by Cheapflights users on 4/4. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/197:20 pm
SEA
- MHT
2 stops9h 45m
Southwest
Mon 6/227:00 pm
MHT
- SEA
1 stop8h 25m
Southwest
Deal found 4/4![Southwest logo]()
$472
This Southwest deal was found by Cheapflights users on 4/3. 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 5/16:15 pm
SEA
- MHT
2 stops10h 45m
Southwest
Fri 5/89:15 am
MHT
- SEA
2 stops14h 10m
Southwest
Deal found 4/3![Southwest logo]()
$527
This Southwest deal was found by Cheapflights users on 4/5. Clicking the “Pick Dates” 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 4/205:15 am
SEA
- MHT
1 stop7h 45m
Southwest
Fri 4/247:10 pm
MHT
- SEA
1 stop7h 55m
Southwest
Deal found 4/5![Southwest logo]()
$577
Last-minute flights from Seattle to New HampshireDiscover last-minute flight deals from Seattle to New Hampshire. Data last updated April 8, 2026 and is based on user searches.
Discover last-minute flight deals from Seattle to New Hampshire. Data last updated April 8, 2026 and is based on user searches.
This Delta deal was found by Cheapflights users on 4/5. Clicking the “Pick Dates” 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 4/1411:14 pm
SEA
- PWM
2 stops11h 57m
Delta
Wed 4/225:21 am
PWM
- SEA
2 stops11h 56m
Delta
Deal found 4/5![Delta logo]()
$331
This United Airlines deal was found by Cheapflights users on 4/6. Clicking the “Pick Dates” 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 5/11:07 pm
SEA
- PWM
1 stop7h 52m
United Airlines
Mon 5/44:50 pm
PWM
- SEA
1 stop8h 57m
United Airlines
Deal found 4/6![United Airlines logo]()
$321
This Delta deal was found by Cheapflights users on 4/5. Clicking the “Pick Dates” 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 5/311:59 pm
SEA
- PWM
2 stops12h 58m
Delta
Tue 5/55:21 am
PWM
- SEA
1 stop9h 53m
Delta
Deal found 4/5![Delta logo]()
$336
This American Airlines deal was found by Cheapflights users on 4/5. Clicking the “Pick Dates” 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 5/412:34 pm
SEA
- PWM
1 stop7h 53m
American Airlines
Sat 5/96:00 am
PWM
- SEA
1 stop8h 34m
American Airlines
Deal found 4/5![American Airlines logo]()
$306
This Southwest deal was found by Cheapflights users on 4/7. Clicking the “Pick Dates” 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 5/56:00 am
SEA
- BOS
1 stop7h 05m
Southwest
Tue 5/122:25 pm
BOS
- SEA
2 stops12h 30m
Southwest
Deal found 4/7![Southwest logo]()
$268
This American Airlines deal was found by Cheapflights users on 4/6. Clicking the “Pick Dates” 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 5/51:19 pm
SEA
- PWM
1 stop7h 54m
American Airlines
Tue 5/126:01 pm
PWM
- SEA
1 stop9h 35m
American Airlines
Deal found 4/6![American Airlines logo]()
$291
This SmartFares deal was found by Cheapflights users on 4/4. 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 SmartFares 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
Tue 5/267:00 am
BOS
- SEA
Nonstop6h 17m
JetBlue
Deal found 4/4![JetBlue logo]()
$254
This Cheapflightsfares deal was found by Cheapflights users on 4/6. Clicking the “Pick Dates” 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 37m
JetBlue
Wed 5/277:00 am
BOS
- SEA
Nonstop6h 17m
JetBlue
Deal found 4/6![JetBlue logo]()
$262
This KAYAK deal was found by Cheapflights users on 4/6. Clicking the “Pick Dates” 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 5/2311:35 am
SEA
- BOS
Nonstop5h 39m
JetBlue
Tue 6/27:00 am
BOS
- SEA
Nonstop6h 17m
JetBlue
Deal found 4/6![JetBlue logo]()
$265
This American Airlines deal was found by Cheapflights users on 4/7. Clicking the “Pick Dates” 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 5/2710:50 am
SEA
- MHT
1 stop9h 06m
American Airlines
Wed 6/35:59 pm
MHT
- SEA
1 stop9h 17m
American Airlines
Deal found 4/7![American Airlines logo]()
$375
This Southwest deal was found by Cheapflights users on 4/7. Clicking the “Pick Dates” 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 5/277:10 pm
SEA
- MHT
2 stops10h 20m
Southwest
Wed 6/33:45 pm
MHT
- SEA
2 stops11h 25m
Southwest
Deal found 4/7![Southwest logo]()
$395
This SmartFares deal was found by Cheapflights users on 4/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure SmartFares 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 4/5![JetBlue logo]()
$249
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 8, 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 8, 2026.
This Kiwi.com deal was found by Cheapflights users on 4/3. 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.
Sun 5/37:12 pm
SEA
- BOS
2 stops34h 22m
Frontier
Deal found 4/3![Frontier logo]()
$127
This KAYAK deal was found by Cheapflights users on 4/3. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/2011:30 am
SEA
- BOS
Nonstop5h 37m
JetBlue
Deal found 4/3![JetBlue logo]()
$130
This KAYAK deal was found by Cheapflights users on 4/3. 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 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
Deal found 4/3![JetBlue logo]()
$132
This Kiwi.com deal was found by Cheapflights users on 4/4. 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 5/47:12 pm
SEA
- BOS
2 stops27h 12m
Frontier
Deal found 4/4![Frontier logo]()
$133
This Trip.com deal was found by Cheapflights users on 4/3. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/207:12 pm
SEA
- BOS
2 stops13h 33m
Frontier
Deal found 4/3![Frontier logo]()
$137
This United Airlines deal was found by Cheapflights users on 4/3. 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.
Wed 5/61:07 pm
SEA
- BOS
1 stop7h 52m
United Airlines
Deal found 4/3![United Airlines logo]()
$139
This Delta deal was found by Cheapflights users on 4/3. 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.
Fri 5/1511:05 pm
SEA
- BOS
1 stop7h 01m
Delta
Deal found 4/3![Delta logo]()
$142
This United Airlines deal was found by Cheapflights users on 4/3. 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 4/287:00 am
SEA
- BOS
1 stop7h 26m
United Airlines
Deal found 4/3![United Airlines logo]()
$144
This Kiwi.com deal was found by Cheapflights users on 4/3. 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.
Tue 4/287:12 pm
SEA
- BOS
2 stops27h 19m
Frontier
Deal found 4/3![Frontier logo]()
$145
This American Airlines deal was found by Cheapflights users on 4/3. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/910:47 pm
SEA
- PWM
1 stop8h 31m
American Airlines
Deal found 4/3![American Airlines logo]()
$146
This Super.com deal was found by Cheapflights users on 4/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/2311:44 pm
SEA
- BOS
Nonstop5h 16m
JetBlue
Deal found 4/6![JetBlue logo]()
$147
This Cheapflightsfares deal was found by Cheapflights users on 4/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/3011:55 pm
SEA
- BOS
Nonstop5h 24m
JetBlue
Deal found 4/6![JetBlue logo]()
$148
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 8, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $249 (SmartFares) |
One-way from | $127 (Kiwi.com) |
Popular in | December |
Cheapest in | September |
Average price | $437 |
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 8, 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
SeattlePortland
SEA - PWM
SEAPWM
Seattle/Tacoma Intl
Tue 5/12
5:30 am-4:07 pm
1 stop7h 37m
Portland
Fri 5/15
2:38 pm-10:45 pm
1 stop11h 07m
$351
SeattlePortland
SEA - PWM
SEAPWM
Seattle/Tacoma Intl
Tue 6/2
5:30 am-11:09 pm
2 stops14h 39m
Portland
Tue 6/16
11:02 am-8:25 pm
2 stops12h 23m
$356
SeattleBoston
SEA - BOS
SEABOS
Seattle/Tacoma Intl
Fri 5/1
5:15 am-5:10 pm
1 stop8h 55m
Boston Logan Intl
Wed 5/6
2:25 pm-11:35 pm
2 stops12h 10m
$357
SeattleBoston
SEA - BOS
SEABOS
Seattle/Tacoma Intl
Tue 9/1
5:20 am-4:10 pm
1 stop7h 50m
Boston Logan Intl
Sat 9/12
5:30 am-1:10 pm
2 stops10h 40m
$357
SeattleBoston
SEA - BOS
SEABOS
Seattle/Tacoma Intl
Sun 5/10
11:00 pm-7:35 am
Nonstop5h 35m
Boston Logan Intl
Fri 9/4
3:30 pm-7:00 pm
Nonstop6h 30m
$367
SeattlePortland
SEA - PWM
SEAPWM
Seattle/Tacoma Intl
Sat 5/16
5:30 am-11:09 pm
2 stops14h 39m
Portland
Sat 5/23
4:49 pm-10:48 pm
1 stop8h 59m
$385
SeattleBoston
SEA - BOS
SEABOS
Seattle/Tacoma Intl
Fri 6/12
3:59 pm-12:18 am
Nonstop5h 19m
Boston Logan Intl
Sun 6/21
7:25 pm-10:49 pm
Nonstop6h 24m
$392
SeattleBoston
SEA - BOS
SEABOS
Seattle/Tacoma Intl
Mon 5/11
11:00 pm-7:35 am
Nonstop5h 35m
Boston Logan Intl
Fri 5/15
7:30 pm-10:40 pm
Nonstop6h 10m
$392
SeattlePortland
SEA - PWM
SEAPWM
Seattle/Tacoma Intl
Wed 5/6
11:45 pm-2:10 pm
2 stops11h 25m
Portland
Mon 5/11
2:50 pm-12:55 am
2 stops13h 05m
$395
SeattleBoston
SEA - BOS
SEABOS
Seattle/Tacoma Intl
Tue 5/19
6:00 am-6:35 pm
1 stop9h 35m
Boston Logan Intl
Tue 5/26
7:20 am-4:55 pm
2 stops12h 35m
$397
Showing 1-10 of 57 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-PWM
SEA-BOS
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-PWM
SEA-BOS
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 $134). Flying from Seattle to New Hampshire in May is currently the most expensive (average of $519). 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 8, 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.
Comfort
8.0
Food
7.0
Entertainment
7.5
Boarding
8.1
Crew
8.6
Overall
8.0
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Comfort
8.0
Food
7.0
Entertainment
7.5
Boarding
8.1
Crew
8.6
Overall
8.0
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Comfort
8.0
Food
7.0
Entertainment
7.5
Boarding
8.1
Crew
8.6
Overall
8.0
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.
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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 8, 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 8, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$286 | Average$516 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$377 | Average$517 | FlexibilityNo cancel fee | On-time63% |