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New Hampshire

$129+ 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 9/7. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — MHT
Jul 6 — Jul 131
Sun 7/6
Sun 7/13
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 July 1, 2025.

Round-trip from

$217
(Delta)

One-way from

$129
(Alaska Airlines)

Popular in

August

Cheapest in

January

Average price

$457
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. 15% potential increase in price ($67 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($10 potential savings vs. average RT price).
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Average for round-trip flights in July 2025
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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 July 1, 2025.

This Delta deal was found by Cheapflights users on 6/30. Clicking the “Pick Dates” 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 9/243:38 pmSEA - BOS
Nonstop5h 21mDelta
Tue 9/307:25 amBOS - SEA
Nonstop6h 18mDelta
Deal found 6/30$217
This Alaska Airlines deal was found by Cheapflights users on 6/30. Clicking the “Pick Dates” 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 9/2011:34 pmSEA - BOS
Nonstop5h 26mAlaska Airlines
Wed 10/17:45 amBOS - SEA
1 stop12h 06mAlaska Airlines
Deal found 6/30$227
This Hawaiian Airlines deal was found by Cheapflights users on 6/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Hawaiian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/183:59 pmSEA - BOS
Nonstop5h 28mHawaiian Airlines
Mon 9/296:55 pmBOS - SEA
Nonstop6h 13mHawaiian Airlines
Deal found 6/30$237
This JetBlue deal was found by Cheapflights users on 6/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/1511:30 amSEA - BOS
Nonstop5h 33mJetBlue
Sun 10/197:00 amBOS - SEA
Nonstop6h 19mJetBlue
Deal found 6/30$238
This Southwest deal was found by Cheapflights users on 7/1. 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.
Thu 9/119:10 pmSEA - BOS
1 stop9h 50mSouthwest
Wed 9/1712:40 pmBOS - SEA
2 stops11h 15mSouthwest
Deal found 7/1$252
This JetBlue deal was found by Cheapflights users on 6/29. Clicking the “Pick Dates” 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.
Mon 9/2211:40 pmSEA - PWM
1 stop10h 42mJetBlue
Thu 9/252:17 pmPWM - SEA
1 stop10h 53mJetBlue
Deal found 6/29$261
This American Airlines deal was found by Cheapflights users on 6/30. Clicking the “Pick Dates” 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 8/119:45 pmSEA - BOS
1 stop9h 29mAmerican Airlines
Tue 8/197:00 amBOS - SEA
1 stop10h 15mAmerican Airlines
Deal found 6/30$283
This Orbitz deal was found by Cheapflights users on 6/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/125:59 pmSEA - BOS
1 stop9h 11mMultiple Airlines
Thu 8/2112:57 pmBOS - SEA
2 stops14h 37mMultiple Airlines
Deal found 6/30$315
This American Airlines deal was found by Cheapflights users on 6/30. Clicking the “Pick Dates” 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 9/411:05 pmSEA - MHT
1 stop9h 09mAmerican Airlines
Mon 9/2212:38 pmMHT - SEA
1 stop10h 31mAmerican Airlines
Deal found 6/30$343
This American Airlines deal was found by Cheapflights users on 6/30. Clicking the “Pick Dates” 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 10/2910:49 pmSEA - PWM
1 stop9h 38mAmerican Airlines
Mon 11/35:10 pmPWM - SEA
1 stop9h 05mAmerican Airlines
Deal found 6/30$351
This Southwest deal was found by Cheapflights users on 6/29. Clicking the “Pick Dates” 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 9/295:30 pmSEA - MHT
2 stops11h 40mSouthwest
Thu 10/21:40 pmMHT - SEA
2 stops13h 45mSouthwest
Deal found 6/29$353
This Delta deal was found by Cheapflights users on 6/30. Clicking the “Pick Dates” 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 11/111:50 amSEA - PWM
1 stop9h 13mDelta
Wed 11/124:55 pmPWM - SEA
1 stop8h 30mDelta
Deal found 6/30$354

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 July 1, 2025.
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

SeattleBoston

SEA - BOS

SEABOS

Seattle/Tacoma Intl

Wed 9/24

3:59 pm-12:27 am

Nonstop5h 28m

Boston Logan Intl

Tue 9/30

6:55 pm-10:08 pm

Nonstop6h 13m

$217

SeattleBoston

SEA - BOS

SEABOS

Seattle/Tacoma Intl

Thu 9/18

3:59 pm-12:27 am

Nonstop5h 28m

Boston Logan Intl

Mon 9/29

6:55 pm-10:08 pm

Nonstop6h 13m

$237

SeattleBoston

SEA - BOS

SEABOS

Seattle/Tacoma Intl

Wed 10/15

11:30 am-8:03 pm

Nonstop5h 33m

Boston Logan Intl

Sun 10/19

7:00 am-10:19 am

Nonstop6h 19m

$238

SeattleBoston

SEA - BOS

SEABOS

Seattle/Tacoma Intl

Thu 9/11

9:10 pm-10:00 am

1 stop9h 50m

Boston Logan Intl

Wed 9/17

12:40 pm-8:55 pm

2 stops11h 15m

$252

SeattlePortland

SEA - PWM

SEAPWM

Seattle/Tacoma Intl

Mon 9/22

11:40 pm-1:22 pm

1 stop10h 42m

Portland

Thu 9/25

2:17 pm-10:10 pm

1 stop10h 53m

$261

SeattleBoston

SEA - BOS

SEABOS

Seattle/Tacoma Intl

Wed 10/1

7:20 am-11:40 pm

1 stop13h 20m

Boston Logan Intl

Wed 10/15

7:05 am-10:45 am

Nonstop6h 40m

$280

SeattleBoston

SEA - BOS

SEABOS

Seattle/Tacoma Intl

Wed 8/13

12:20 am-10:57 am

1 stop7h 37m

Boston Logan Intl

Tue 8/19

12:30 pm-6:49 pm

1 stop9h 19m

$282

SeattleBoston

SEA - BOS

SEABOS

Seattle/Tacoma Intl

Mon 8/11

9:45 pm-10:14 am

1 stop9h 29m

Boston Logan Intl

Tue 8/19

7:00 am-2:15 pm

1 stop10h 15m

$283

SeattleBoston

SEA - BOS

SEABOS

Seattle/Tacoma Intl

Tue 8/12

5:59 pm-6:10 am

1 stop9h 11m

Boston Logan Intl

Thu 8/21

12:57 pm-12:34 am

2 stops14h 37m

$315

SeattleManchester

SEA - MHT

SEAMHT

Seattle/Tacoma Intl

Thu 9/4

11:05 pm-11:14 am

1 stop9h 09m

Manchester

Mon 9/22

12:38 pm-8:09 pm

1 stop10h 31m

$343

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/29

Showing 1-10 of 40 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 time of day to fly from SEA to NH?

Find hourly flight availability from Seattle to New Hampshire. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated July 1, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Seattle to New Hampshire as you normally would.

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 July 1, 2025.
Read reviews from past customers who have flown Alaska Airlines, Southwest, and Delta from Seattle to New Hampshire. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Entertainment

7.1

Comfort

7.8

Crew

8.5

Boarding

8.1

Overall

8.0

Reviews

1 / 20
10.0
Excellent

David,Aug 2024

SFO - BOS

Could not watch a movie, asked for help. Could not get extra cookies
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Entertainment

7.1

Comfort

7.8

Crew

8.5

Boarding

8.1

Overall

8.0

Reviews

1 / 20
10.0
Excellent

David,Aug 2024

SFO - BOS

Could not watch a movie, asked for help. Could not get extra cookies
Southwest
8.0
Very good
4,275 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Entertainment

7.1

Comfort

7.8

Crew

8.5

Boarding

8.1

Overall

8.0

Reviews

1 / 20
10.0
Excellent

David,Aug 2024

SFO - BOS

Could not watch a movie, asked for help. Could not get extra cookies
Delta
8.0
Very good
7,973 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Entertainment

7.1

Comfort

7.8

Crew

8.5

Boarding

8.1

Overall

8.0

Reviews

1 / 20
10.0
Excellent

David,Aug 2024

SFO - BOS

Could not watch a movie, asked for help. Could not get extra cookies
Hawaiian Airlines
7.8
Good
2,538 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Entertainment

7.1

Comfort

7.8

Crew

8.5

Boarding

8.1

Overall

8.0

Reviews

1 / 20
10.0
Excellent

David,Aug 2024

SFO - BOS

Could not watch a movie, asked for help. Could not get extra cookies
United Airlines
7.4
Good
8,852 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Entertainment

7.1

Comfort

7.8

Crew

8.5

Boarding

8.1

Overall

8.0

Reviews

1 / 20
10.0
Excellent

David,Aug 2024

SFO - BOS

Could not watch a movie, asked for help. Could not get extra cookies

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.

  • What are the cheapest airlines to fly from Seattle to New Hampshire one-way?

    The cheapest airline one-way is Alaska Airlines, with whom users have recently found tickets for as low as $129. However, be on the lookout for offers from Spirit Airlines and American Airlines, as they are both options that can get you from Seattle to New Hampshire for a low price.

  • 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, January is the cheapest month in which you can book a flight from Seattle to New Hampshire (average of $334). Flying from Seattle to New Hampshire in April is currently the most expensive (average of $396). 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 4 airlines flying from Seattle to New Hampshire

Discover the top 4 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 July 1, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$336Average$553FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$346Average$453FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$416Average$536FlexibilityNo cancel feeOn-time63%
Alaska AirlinesCheapest$487Average$807FlexibilityNo cancel feeOn-time75%

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