Seattle

$121+ Cheap flights from New Hampshire to Seattle (SEA)

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 4/29. Fares are subject to change and may not be available on all flights or dates of travel.
MHT — SEA
Mrz 23 — Mrz 301
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Cheap flight deals from New Hampshire to Seattle

Cheapest flights from New Hampshire to Seattle
Explore the most affordable flight options available from New Hampshire to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on Februar 21, 2026.

This United Airlines deal was found by Cheapflights users on 2/18. 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.
Fr 5/84:45 pm
PWM
-
SEA
1 stop10h 12m
United Airlines
Di 5/198:00 am
SEA
-
PWM
1 stop8h 04m
United Airlines
Deal found 2/18$241
This Delta deal was found by Cheapflights users on 2/19. 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.
Mi 5/271:18 pm
PWM
-
SEA
2 stops13h 23m
Delta
Fr 5/295:30 am
SEA
-
PWM
1 stop7h 33m
Delta
Deal found 2/19$246
This Delta deal was found by Cheapflights users on 2/19. 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.
Mi 5/271:18 pm
PWM
-
SEA
2 stops13h 23m
Delta
Do 5/2811:59 pm
SEA
-
PWM
2 stops8h 58m
Delta
Deal found 2/19$251
This American Airlines deal was found by Cheapflights users on 2/21. 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.
Do 3/195:31 pm
BOS
-
SEA
1 stop9h 53m
American Airlines
Mo 3/2310:08 pm
SEA
-
BOS
1 stop9h 49m
American Airlines
Deal found 2/21$257
This Delta deal was found by Cheapflights users on 2/20. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mi 3/252:30 pm
PWM
-
SEA
1 stop10h 52m
Delta
Mo 4/206:00 am
SEA
-
PWM
1 stop6h 57m
Delta
Deal found 2/20$259
This Delta deal was found by Cheapflights users on 2/20. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fr 3/206:45 pm
BOS
-
SEA
Nonstop6h 25m
Delta
Di 3/246:05 pm
SEA
-
BOS
2 stops13h 50m
Delta
Deal found 2/20$260
This Delta deal was found by Cheapflights users on 2/17. 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.
Mi 5/207:30 pm
BOS
-
SEA
Nonstop6h 09m
Delta
Fr 5/2911:00 pm
SEA
-
BOS
Nonstop5h 35m
Delta
Deal found 2/17$262
This Southwest deal was found by Cheapflights users on 2/19. 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.
Di 5/52:25 pm
BOS
-
SEA
2 stops11h 05m
Southwest
Di 5/129:20 am
SEA
-
BOS
1 stop11h 45m
Southwest
Deal found 2/19$263
This American Airlines deal was found by Cheapflights users on 2/21. 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.
Fr 2/275:40 pm
PWM
-
SEA
1 stop9h 44m
American Airlines
Di 3/310:57 pm
SEA
-
PWM
1 stop10h 02m
American Airlines
Deal found 2/21$263
This Delta deal was found by Cheapflights users on 2/19. 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.
Do 3/192:30 pm
PWM
-
SEA
1 stop10h 52m
Delta
Mo 3/3011:59 pm
SEA
-
PWM
2 stops9h 10m
Delta
Deal found 2/19$264
This Delta deal was found by Cheapflights users on 2/19. 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.
Mi 3/189:05 am
BOS
-
SEA
1 stop8h 15m
Delta
Di 3/246:05 pm
SEA
-
BOS
2 stops13h 50m
Delta
Deal found 2/19$265
This Delta deal was found by Cheapflights users on 2/18. 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.
Mi 4/157:37 am
BOS
-
SEA
Nonstop6h 18m
Delta
Mo 4/2010:35 pm
SEA
-
BOS
Nonstop5h 20m
Delta
Deal found 2/18$267

Find flight deals from New Hampshire to Seattle

Keep the following information in mind while searching for New Hampshire to Seattle flight deals. Data was last updated Februar 21, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$241
(United Airlines)

One-way from

$121
(United Airlines)

Popular in

December

Cheapest in

March

Average price

$370
Provider with most accurate pricing for Boston Logan Intl-Seattle/Tacoma Intl flight deals.
Provider most trusted by Cheapflights users for Boston Logan Intl-Seattle/Tacoma Intl flights.
From New Hampshire to Seattle/Tacoma Intl
One-way flight from New Hampshire to Seattle/Tacoma Intl
Highest demand for flights based on searches. 13% potential increase in price ($56 potential increase over avg. RT price).
Cheapest flight prices on average. 3% potential price decrease ($15 potential savings vs. average RT price).
Average for round-trip flights in February 2026

Cheapflights Fare Finder

 
Customize your flight search to find flights from New Hampshire to Seattle 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 Februar 21, 2026.
Use the filters below to find and compare flights from New Hampshire to Seattle that are best for you.

Fly from

New Hampshire

Fly to

Seattle

Route

Depart

Return

Price

PortlandSeattle

PWM - SEA

PWMSEA

Portland

Mi 3/11

3:44 pm-10:53 pm

1 stop10h 09m

Seattle/Tacoma Intl

Di 3/24

11:59 pm-10:49 am

1 stop7h 50m

$241

PortlandSeattle

PWM - SEA

PWMSEA

Portland

Di 4/7

7:07 am-2:27 pm

1 stop10h 20m

Seattle/Tacoma Intl

Mi 4/8

7:00 am-5:31 pm

1 stop7h 31m

$241

PortlandSeattle

PWM - SEA

PWMSEA

Portland

Fr 5/8

4:45 pm-11:57 pm

1 stop10h 12m

Seattle/Tacoma Intl

Di 5/19

8:00 am-7:04 pm

1 stop8h 04m

$241

PortlandSeattle

PWM - SEA

PWMSEA

Portland

Sa 4/25

3:40 pm-12:30 am

2 stops11h 50m

Seattle/Tacoma Intl

Sa 5/2

10:47 pm-10:23 am

1 stop8h 36m

$246

BostonSeattle

BOS - SEA

BOSSEA

Boston Logan Intl

Fr 3/13

6:50 pm-10:10 pm

Nonstop6h 20m

Seattle/Tacoma Intl

Do 3/26

10:25 pm-6:50 am

Nonstop5h 25m

$267

BostonSeattle

BOS - SEA

BOSSEA

Boston Logan Intl

Mi 3/11

6:00 pm-11:55 pm

1 stop8h 55m

Seattle/Tacoma Intl

Mi 3/18

11:55 pm-11:10 am

1 stop8h 15m

$267

BostonSeattle

BOS - SEA

BOSSEA

Boston Logan Intl

Mo 4/13

6:45 pm-10:05 pm

Nonstop6h 20m

Seattle/Tacoma Intl

So 4/19

10:35 pm-6:55 am

Nonstop5h 20m

$267

BostonSeattle

BOS - SEA

BOSSEA

Boston Logan Intl

Mo 3/30

7:10 am-10:37 am

Nonstop6h 27m

Seattle/Tacoma Intl

Fr 4/3

3:45 pm-11:59 pm

Nonstop5h 14m

$267

PortlandSeattle

PWM - SEA

PWMSEA

Portland

Mi 5/13

4:48 pm-10:28 pm

1 stop8h 40m

Seattle/Tacoma Intl

Di 5/19

9:35 am-12:34 am

2 stops11h 59m

$275

BostonSeattle

BOS - SEA

BOSSEA

Boston Logan Intl

Mo 3/30

7:10 am-10:37 am

Nonstop6h 27m

Seattle/Tacoma Intl

Do 4/2

4:55 pm-6:10 am

1 stop10h 15m

$277

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/19

Showing 1-10 of 60 results
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Best time to book a flight from New Hampshire to Seattle

Have a flexible travel schedule? Discover the best time to fly to Seattle from New Hampshire 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 New Hampshire to Seattle

What is the cheapest month to book a flight from New Hampshire to Seattle?

Currently, October is the cheapest month in which you can book a flight from New Hampshire to Seattle (average of $218). Flying from New Hampshire to Seattle in December is currently the most expensive (average of $486). 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.

Related info for your journey

Find useful and relevant information for your journey from New Hampshire to Seattle. 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 into for flights to Seattle from New Hampshire?

    Seattle/Tacoma Intl (SEA) is the airport you will fly into if you book a flight from New Hampshire to Seattle. It is only a 11.4 mi journey from Seattle/Tacoma Intl (SEA) to Seattle’s city center.

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

    Airlines like United Airlines, American Airlines, and Delta fly from New Hampshire to Seattle in about 6h 20m. The time it takes to get you to your destination can typically vary by up to 4h. There are 2487 mi between New Hampshire and Seattle. This flight may include one or multiple stops.

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

    The cheapest airlines for a one-way flight from New Hampshire to Seattle are American Airlines ($162), Southwest ($168), and United Airlines ($171).

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

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

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

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

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

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

    Yes. Cheapflights offers flight deals from New Hampshire to Seattle 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 New Hampshire to Seattle?

    Currently, October is the cheapest month in which you can book a flight from New Hampshire to Seattle (average of $218). Flying from New Hampshire to Seattle in December is currently the most expensive (average of $486). 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

Traveling to a place near Seattle?

Book flights to Seattle if you plan to visit one of these locations
Tacoma
SeaTac
Lakewood
Ocean Shores
Olympia
Kent
Lynnwood
Edmonds
Lacey
Renton
Puyallup
Kirkland
Tukwila
Fife
Aberdeen
Shoreline
Marysville
Centralia
Federal Way
Chehalis

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for New Hampshire to Seattle

See prices for flight routes from nearby airports that may be better suited for you.

Top 4 airlines flying from New Hampshire to Seattle

Discover the top 4 airlines that operate flights from New Hampshire to Seattle. 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 Februar 21, 2026.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$326Average$542FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$342Average$422FlexibilityNo cancel feeOn-time69%
Alaska AirlinesCheapest$347Average$796FlexibilityNo cancel feeOn-time75%
SouthwestCheapest$379Average$446FlexibilityNo cancel feeOn-time63%

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