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New Hampshire

$85+ 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 12/9. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — MHT
Nov 21 — Nov 281
Fri 11/21
Fri 11/28
1 adult, Economy
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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 October 22, 2025.

This American Airlines deal was found by Cheapflights users on 10/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/810:58 pmSEA - PWM
1 stop9h 42mAmerican Airlines
Tue 12/163:34 pmPWM - SEA
1 stop9h 16mAmerican Airlines
Deal found 10/22$164
This Delta deal was found by Cheapflights users on 10/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/311:15 pmSEA - PWM
1 stop9h 58mDelta
Wed 12/104:53 pmPWM - SEA
1 stop8h 32mDelta
Deal found 10/21$197
This Southwest deal was found by Cheapflights users on 10/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/65:45 amSEA - BOS
1 stop7h 20mSouthwest
Mon 12/85:00 pmBOS - SEA
1 stop8h 55mSouthwest
Deal found 10/20$198
This Delta deal was found by Cheapflights users on 10/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/156:00 amSEA - PWM
1 stop7h 07mDelta
Sat 12/62:34 pmPWM - SEA
1 stop10h 49mDelta
Deal found 10/21$214
This Delta deal was found by Cheapflights users on 10/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/1611:55 pmSEA - PWM
2 stops13h 12mDelta
Thu 12/46:15 amPWM - SEA
1 stop11h 14mDelta
Deal found 10/21$219
This American Airlines deal was found by Cheapflights users on 10/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/2612:34 amSEA - PWM
1 stop7h 54mAmerican Airlines
Fri 10/313:38 pmPWM - SEA
1 stop9h 52mAmerican Airlines
Deal found 10/20$221
This American Airlines deal was found by Cheapflights users on 10/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/612:38 amSEA - BOS
1 stop7h 54mAmerican Airlines
Wed 12/101:45 pmBOS - SEA
1 stop12h 40mAmerican Airlines
Deal found 10/21$221
This Delta deal was found by Cheapflights users on 10/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/156:00 amSEA - PWM
1 stop7h 07mDelta
Fri 12/54:53 pmPWM - SEA
1 stop8h 32mDelta
Deal found 10/21$222
This Delta deal was found by Cheapflights users on 10/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/1611:55 pmSEA - PWM
2 stops13h 12mDelta
Sat 12/62:34 pmPWM - SEA
2 stops10h 51mDelta
Deal found 10/21$224
This Kiwi.com deal was found by Cheapflights users on 10/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/143:59 pmSEA - BOS
Nonstop5h 21mHawaiian Airlines
Thu 11/207:00 amBOS - SEA
Nonstop6h 35mHawaiian Airlines
Deal found 10/20$224
This American Airlines deal was found by Cheapflights users on 10/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/2712:34 amSEA - PWM
1 stop7h 54mAmerican Airlines
Sat 11/11:42 pmPWM - SEA
2 stops12h 14mAmerican Airlines
Deal found 10/20$226
This Southwest deal was found by Cheapflights users on 10/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/45:40 amSEA - BOS
1 stop7h 25mSouthwest
Mon 12/85:00 pmBOS - SEA
1 stop8h 55mSouthwest
Deal found 10/21$226

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 October 22, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$186
(Southwest)

One-way from

$85
(American Airlines)

Popular in

December

Cheapest in

January

Average price

$330
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
Search Deals
One-way flight from Seattle/Tacoma Intl to New Hampshire
Search Deals
High demand for flights, 3% potential price rise
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($12 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in October 2025
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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 October 22, 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

SeattlePortland

SEA - PWM

SEAPWM

Seattle/Tacoma Intl

Thu 12/11

11:30 am-11:59 pm

1 stop9h 29m

Portland

Mon 12/15

6:15 am-2:30 pm

1 stop11h 15m

$197

SeattlePortland

SEA - PWM

SEAPWM

Seattle/Tacoma Intl

Mon 12/8

11:30 am-11:59 pm

1 stop9h 29m

Portland

Thu 12/11

4:53 pm-10:25 pm

1 stop8h 32m

$197

SeattlePortland

SEA - PWM

SEAPWM

Seattle/Tacoma Intl

Tue 3/10

6:05 am-4:15 pm

1 stop7h 10m

Portland

Wed 3/11

4:50 pm-10:00 pm

1 stop8h 10m

$221

SeattlePortland

SEA - PWM

SEAPWM

Seattle/Tacoma Intl

Mon 12/8

11:30 am-11:59 pm

1 stop9h 29m

Portland

Tue 12/16

4:53 pm-10:25 pm

1 stop8h 32m

$224

SeattleBoston

SEA - BOS

SEABOS

Seattle/Tacoma Intl

Fri 11/14

10:05 pm-6:35 am

Nonstop5h 30m

Boston Logan Intl

Thu 11/20

7:15 am-10:45 am

Nonstop6h 30m

$234

SeattleBoston

SEA - BOS

SEABOS

Seattle/Tacoma Intl

Mon 11/10

11:10 pm-7:29 am

Nonstop5h 19m

Boston Logan Intl

Sat 11/15

7:00 am-10:35 am

Nonstop6h 35m

$237

SeattleBoston

SEA - BOS

SEABOS

Seattle/Tacoma Intl

Fri 12/5

3:38 pm-11:59 pm

Nonstop5h 21m

Boston Logan Intl

Wed 12/10

7:00 am-10:35 am

Nonstop6h 35m

$237

SeattleBoston

SEA - BOS

SEABOS

Seattle/Tacoma Intl

Wed 12/3

10:25 pm-6:55 am

Nonstop5h 30m

Boston Logan Intl

Thu 12/11

11:25 am-2:44 pm

Nonstop6h 19m

$237

SeattleBoston

SEA - BOS

SEABOS

Seattle/Tacoma Intl

Sat 12/6

3:40 pm-11:58 pm

Nonstop5h 18m

Boston Logan Intl

Sat 12/13

6:55 pm-10:14 pm

Nonstop6h 19m

$237

SeattleBoston

SEA - BOS

SEABOS

Seattle/Tacoma Intl

Tue 11/11

10:05 pm-6:35 am

Nonstop5h 30m

Boston Logan Intl

Thu 12/4

7:15 am-10:45 am

Nonstop6h 30m

$237

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/22

Showing 1-10 of 58 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 May is currently the most expensive (average of $483). 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 October 22, 2025.
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
4,237 reviews

Food

7.0

Comfort

8.0

Entertainment

7.5

Crew

8.6

Overall

8.0

Boarding

8.1

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
Southwest
8.0
Very good
4,237 reviews
Southwest
8.0
Very good
4,237 reviews

Food

7.0

Comfort

8.0

Entertainment

7.5

Crew

8.6

Overall

8.0

Boarding

8.1

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
United Airlines
7.4
Good
8,990 reviews
Southwest
8.0
Very good
4,237 reviews

Food

7.0

Comfort

8.0

Entertainment

7.5

Crew

8.6

Overall

8.0

Boarding

8.1

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
American Airlines
7.2
Good
11,028 reviews
Southwest
8.0
Very good
4,237 reviews

Food

7.0

Comfort

8.0

Entertainment

7.5

Crew

8.6

Overall

8.0

Boarding

8.1

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines

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?

    Delta, Alaska Airlines, and United Airlines can get you from Seattle to New Hampshire in just under 5h 19m. Your travel time can differ by up to 4h 10m. Airlines will cover a distance of 2487 mi. Both multi-stop and nonstop flights can be found to your destination and back.

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

    The cheapest airline one-way is American Airlines, with whom users have recently found tickets for as low as $85. However, be on the lookout for offers from Delta and Alaska 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, 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 $483). 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

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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 October 22, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$328Average$442FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$333Average$566FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$377Average$516FlexibilityNo cancel feeOn-time63%

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