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New Hampshire

$90+ 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 2/4. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — MHT
Feb 7 — Feb 141
Sat 2/7
Sat 2/14
1 adult, Economy
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Cheap 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 January 8, 2026.

Most accurate provider

CheapOair
3 stars

Most trusted provider

CheapOair
3 stars

Round-trip from

$180
(Southwest)

One-way from

$90
(American Airlines)

Popular in

December

Cheapest in

March

Average price

$307
Provider with most accurate pricing for Seattle/Tacoma Intl-Boston Logan Intl flight deals.
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Provider most trusted by Cheapflights users for Seattle/Tacoma Intl-Boston Logan Intl flights.
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From Seattle/Tacoma Intl to New Hampshire
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One-way flight from Seattle/Tacoma Intl to New Hampshire
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Highest demand for flights based on searches. 11% potential increase in price ($46 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($16 potential savings vs. average RT price).
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Average for round-trip flights in January 2026
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Find flight deals from Seattle to New Hampshire

Cheapest flights from Seattle to New Hampshire
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 January 8, 2026.

This Southwest deal was found by Cheapflights users on 1/8. Clicking the “Pick Dates” 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 2/36:25 amSEA - PWM
2 stops12h 50mSouthwest
Wed 2/412:45 pmPWM - SEA
2 stops12h 45mSouthwest
Deal found 1/8$180
This American Airlines deal was found by Cheapflights users on 1/8. Clicking the “Pick Dates” 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 1/298:04 amSEA - PWM
2 stops12h 39mAmerican Airlines
Tue 2/33:58 pmPWM - SEA
1 stop9h 09mAmerican Airlines
Deal found 1/8$191
This Southwest deal was found by Cheapflights users on 1/8. Clicking the “Pick Dates” 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 1/296:25 amSEA - PWM
2 stops12h 50mSouthwest
Tue 2/312:45 pmPWM - SEA
2 stops13h 20mSouthwest
Deal found 1/8$197
This Delta deal was found by Cheapflights users on 1/8. Clicking the “Pick Dates” 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 2/31:45 pmSEA - PWM
1 stop7h 35mDelta
Wed 2/412:10 pmPWM - SEA
2 stops14h 05mDelta
Deal found 1/8$202
This American Airlines deal was found by Cheapflights users on 1/6. 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.
Thu 1/229:45 pmSEA - PWM
2 stops11h 21mAmerican Airlines
Mon 1/2612:40 pmPWM - SEA
2 stops12h 40mAmerican Airlines
Deal found 1/6$232
This American Airlines deal was found by Cheapflights users on 1/7. 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.
Tue 5/511:16 amSEA - PWM
1 stop8h 54mAmerican Airlines
Sat 5/95:45 pmPWM - SEA
1 stop8h 54mAmerican Airlines
Deal found 1/7$250
This Delta deal was found by Cheapflights users on 1/8. Clicking the “Pick Dates” 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 2/51:45 pmSEA - PWM
1 stop7h 35mDelta
Thu 2/122:35 pmPWM - SEA
1 stop10h 47mDelta
Deal found 1/8$251
This American Airlines deal was found by Cheapflights users on 1/7. 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.
Sat 2/78:04 amSEA - PWM
2 stops10h 33mAmerican Airlines
Wed 2/113:58 pmPWM - SEA
1 stop9h 09mAmerican Airlines
Deal found 1/7$264
This American Airlines deal was found by Cheapflights users on 1/7. 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.
Tue 2/2412:07 amSEA - PWM
1 stop14h 00mAmerican Airlines
Sun 3/15:40 pmPWM - SEA
1 stop9h 44mAmerican Airlines
Deal found 1/7$267
This Kiwi.com deal was found by Cheapflights users on 1/7. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 1/279:45 pmSEA - BOS
1 stop14h 35mAlaska Airlines
Sat 2/77:00 amBOS - SEA
Nonstop6h 34mAlaska Airlines
Deal found 1/7$299
This Alaska Airlines deal was found by Cheapflights users on 1/8. Clicking the “Pick Dates” 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 2/1410:40 pmSEA - BOS
Nonstop5h 14mAlaska Airlines
Tue 2/175:44 pmBOS - SEA
1 stop18h 44mAlaska Airlines
Deal found 1/8$300
This Alaska Airlines deal was found by Cheapflights users on 1/5. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/36:10 pmSEA - BOS
1 stop20h 29mAlaska Airlines
Tue 2/105:20 pmBOS - SEA
1 stop8h 13mAlaska Airlines
Deal found 1/5$301

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 January 8, 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

Thu 1/29

6:25 am-10:15 pm

2 stops12h 50m

Portland

Tue 2/3

12:45 pm-11:05 pm

2 stops13h 20m

$197

SeattlePortland

SEA - PWM

SEAPWM

Seattle/Tacoma Intl

Thu 1/22

9:45 pm-12:06 pm

2 stops11h 21m

Portland

Mon 1/26

12:40 pm-10:20 pm

2 stops12h 40m

$232

SeattlePortland

SEA - PWM

SEAPWM

Seattle/Tacoma Intl

Tue 5/5

11:16 am-11:10 pm

1 stop8h 54m

Portland

Sat 5/9

5:45 pm-11:39 pm

1 stop8h 54m

$250

SeattlePortland

SEA - PWM

SEAPWM

Seattle/Tacoma Intl

Thu 2/5

1:45 pm-12:20 am

1 stop7h 35m

Portland

Thu 2/12

2:35 pm-10:22 pm

1 stop10h 47m

$251

SeattlePortland

SEA - PWM

SEAPWM

Seattle/Tacoma Intl

Sat 2/7

8:04 am-9:37 pm

2 stops10h 33m

Portland

Wed 2/11

3:58 pm-10:07 pm

1 stop9h 09m

$264

SeattlePortland

SEA - PWM

SEAPWM

Seattle/Tacoma Intl

Fri 2/20

2:00 pm-12:18 am

1 stop7h 18m

Portland

Fri 2/27

2:35 pm-8:00 pm

1 stop8h 25m

$270

SeattlePortland

SEA - PWM

SEAPWM

Seattle/Tacoma Intl

Thu 2/5

8:04 am-11:43 pm

2 stops12h 39m

Portland

Thu 2/12

5:40 pm-12:24 am

1 stop9h 44m

$270

SeattlePortland

SEA - PWM

SEAPWM

Seattle/Tacoma Intl

Thu 4/2

11:55 pm-11:55 am

2 stops9h 00m

Portland

Mon 4/6

2:50 pm-1:40 am

2 stops13h 50m

$291

SeattleBoston

SEA - BOS

SEABOS

Seattle/Tacoma Intl

Wed 5/6

3:21 pm-11:59 pm

Nonstop5h 38m

Boston Logan Intl

Tue 5/12

5:46 pm-12:59 pm

1 stop22h 13m

$300

SeattleBoston

SEA - BOS

SEABOS

Seattle/Tacoma Intl

Sat 2/14

10:20 pm-6:50 am

Nonstop5h 30m

Boston Logan Intl

Fri 2/20

9:00 am-10:05 pm

1 stop16h 05m

$300

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/8

Showing 1-10 of 60 results
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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.
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

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 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 January 8, 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.
Southwest
8.0
Very good
4,250 reviews

Boarding

8.1

Comfort

8.0

Food

7.0

Crew

8.6

Entertainment

7.5

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am
Southwest
8.0
Very good
4,250 reviews
Southwest
8.0
Very good
4,250 reviews

Boarding

8.1

Comfort

8.0

Food

7.0

Crew

8.6

Entertainment

7.5

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am
United Airlines
7.4
Good
9,139 reviews
Southwest
8.0
Very good
4,250 reviews

Boarding

8.1

Comfort

8.0

Food

7.0

Crew

8.6

Entertainment

7.5

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am
American Airlines
7.2
Good
11,095 reviews
Southwest
8.0
Very good
4,250 reviews

Boarding

8.1

Comfort

8.0

Food

7.0

Crew

8.6

Entertainment

7.5

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am

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.

  • What airport do you fly from for flights from Seattle to New Hampshire?

    Located just 11.4 mi from the city center, Seattle/Tacoma Intl (SEA) is the airport most travelers will use when flying to New Hampshire from Seattle.

  • How long is the flight from Seattle to New Hampshire?

    Southwest, American Airlines, and Delta can get you from Seattle to New Hampshire in just under 7h 35m. Your travel time can differ by up to 5h 15m. Airlines will cover a distance of 2481 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • What are the most popular routes from Seattle to New Hampshire?

    The most popular flight routes from Seattle to New Hampshire are Seattle/Tacoma Intl - Boston Logan Intl, Seattle/Tacoma Intl - Portland and Seattle/Tacoma Intl - Manchester.

  • Can I find deals for flights from Seattle to New Hampshire that include hotel bookings?

    Yes. In addition to deals on Seattle to New Hampshire flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Seattle to New Hampshire?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Seattle to New Hampshire.

  • Can I find deals for business class flights from Seattle to New Hampshire?

    Yes. Cheapflights offers flight deals from Seattle to New Hampshire by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • 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 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.

See more FAQs

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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.
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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 January 8, 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$328Average$442FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$333Average$550FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$377Average$516FlexibilityNo cancel feeOn-time63%

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