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$111+ 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 11/20. Fares are subject to change and may not be available on all flights or dates of travel.
MHT — SEA
Dec 6 — Dec 131
Sat 12/6
Sat 12/13
1 adult, Economy
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Find 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 November 6, 2025.

This Delta deal was found by Cheapflights users on 11/5. 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.
Wed 11/124:53 pmPWM - SEA
1 stop8h 30mDelta
Wed 11/1911:27 amSEA - PWM
1 stop9h 27mDelta
Deal found 11/5$221
This Delta deal was found by Cheapflights users on 11/5. 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.
Wed 11/122:30 pmPWM - SEA
1 stop10h 55mDelta
Mon 11/1711:55 pmSEA - PWM
2 stops10h 55mDelta
Deal found 11/5$226
This United Airlines deal was found by Cheapflights users on 11/4. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/1811:00 amBOS - SEA
1 stop10h 25mUnited Airlines
Sun 11/2311:51 pmSEA - BOS
1 stop7h 48mUnited Airlines
Deal found 11/4$247
This United Airlines deal was found by Cheapflights users on 11/5. 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 11/1911:00 amBOS - SEA
1 stop10h 25mUnited Airlines
Wed 12/108:10 amSEA - BOS
1 stop7h 38mUnited Airlines
Deal found 11/5$257
This eDestinos deal was found by Cheapflights users on 11/4. 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 eDestinos is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/64:24 pmBOS - SEA
2 stops20h 32mMultiple Airlines
Sat 12/1312:48 pmSEA - BOS
2 stops18h 34mMultiple Airlines
Deal found 11/4$259
This United Airlines deal was found by Cheapflights users on 11/5. 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 11/1911:00 amBOS - SEA
1 stop10h 25mUnited Airlines
Sat 12/68:10 amSEA - BOS
1 stop7h 38mUnited Airlines
Deal found 11/5$264
This Delta deal was found by Cheapflights users on 11/6. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/114:53 pmPWM - SEA
1 stop8h 30mDelta
Sat 11/156:00 amSEA - PWM
1 stop7h 07mDelta
Deal found 11/6$266
This United Airlines deal was found by Cheapflights users on 11/5. 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 12/64:25 pmPWM - SEA
1 stop9h 03mUnited Airlines
Sun 12/77:00 amSEA - PWM
2 stops13h 09mUnited Airlines
Deal found 11/5$268
This United Airlines deal was found by Cheapflights users on 11/5. 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 12/34:20 pmBOS - SEA
1 stop9h 08mUnited Airlines
Wed 12/109:25 amSEA - BOS
1 stop9h 18mUnited Airlines
Deal found 11/5$272
This Delta deal was found by Cheapflights users on 11/4. 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.
Sat 11/812:45 pmPWM - SEA
2 stops12h 38mDelta
Wed 11/126:00 amSEA - PWM
2 stops13h 19mDelta
Deal found 11/4$276
This United Airlines deal was found by Cheapflights users on 11/5. 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.
Thu 12/46:00 amBOS - SEA
1 stop8h 45mUnited Airlines
Wed 12/109:25 amSEA - BOS
1 stop9h 18mUnited Airlines
Deal found 11/5$279
This Southwest deal was found by Cheapflights users on 11/5. 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 11/196:45 amBOS - SEA
1 stop14h 55mSouthwest
Sat 12/66:00 amSEA - BOS
2 stops12h 55mSouthwest
Deal found 11/5$280

Cheap 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 November 6, 2025.

Most accurate provider

CheapOair
3 stars

Most trusted provider

CheapOair
3 stars

Round-trip from

$221
(Delta)

One-way from

$111
(Delta)

Popular in

August

Cheapest in

January

Average price

$311
Provider with most accurate pricing for Boston Logan Intl-Seattle/Tacoma Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for Boston Logan Intl-Seattle/Tacoma Intl flights.
Search Deals
From New Hampshire to Seattle/Tacoma Intl
Search Deals
One-way flight from New Hampshire to Seattle/Tacoma Intl
Search Deals
Highest demand for flights based on searches. 12% potential increase in price ($48 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($8 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in November 2025
Search Deals

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 November 6, 2025.
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

Thu 12/11

4:53 pm-10:25 pm

1 stop8h 32m

Seattle/Tacoma Intl

Tue 12/16

6:00 am-4:07 pm

1 stop7h 07m

$221

PortlandSeattle

PWM - SEA

PWMSEA

Portland

Sat 4/25

2:35 pm-10:16 pm

1 stop10h 41m

Seattle/Tacoma Intl

Sat 5/2

11:45 am-11:59 pm

1 stop9h 14m

$275

PortlandSeattle

PWM - SEA

PWMSEA

Portland

Wed 11/19

4:53 pm-12:01 am

2 stops10h 08m

Seattle/Tacoma Intl

Sun 11/23

11:55 pm-4:00 pm

2 stops13h 05m

$276

BostonSeattle

BOS - SEA

BOSSEA

Boston Logan Intl

Thu 12/4

9:40 am-4:07 pm

1 stop9h 27m

Seattle/Tacoma Intl

Tue 12/9

5:00 am-3:42 pm

1 stop7h 42m

$279

PortlandSeattle

PWM - SEA

PWMSEA

Portland

Fri 12/5

4:25 pm-10:28 pm

1 stop9h 03m

Seattle/Tacoma Intl

Sun 12/7

7:00 am-11:09 pm

2 stops13h 09m

$280

PortlandSeattle

PWM - SEA

PWMSEA

Portland

Thu 11/20

6:00 am-12:34 pm

1 stop9h 34m

Seattle/Tacoma Intl

Thu 12/4

8:10 am-11:09 pm

2 stops11h 59m

$292

BostonSeattle

BOS - SEA

BOSSEA

Boston Logan Intl

Sat 2/7

12:55 pm-9:05 pm

2 stops11h 10m

Seattle/Tacoma Intl

Wed 2/11

9:55 am-10:05 pm

2 stops9h 10m

$294

BostonSeattle

BOS - SEA

BOSSEA

Boston Logan Intl

Thu 12/11

10:40 am-4:07 pm

1 stop8h 27m

Seattle/Tacoma Intl

Sun 12/14

9:25 am-9:43 pm

1 stop9h 18m

$304

BostonSeattle

BOS - SEA

BOSSEA

Boston Logan Intl

Sun 1/25

7:00 am-10:34 am

Nonstop6h 34m

Seattle/Tacoma Intl

Wed 1/28

3:40 pm-11:54 pm

Nonstop5h 14m

$307

BostonSeattle

BOS - SEA

BOSSEA

Boston Logan Intl

Tue 12/9

7:00 am-10:35 am

Nonstop6h 35m

Seattle/Tacoma Intl

Fri 12/12

9:00 am-5:20 pm

Nonstop5h 20m

$307

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/4

Showing 1-10 of 59 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 $227). Flying from New Hampshire to Seattle in December is currently the most expensive (average of $479). 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.

What is the cheapest time of day to fly from NH to SEA?

Find hourly flight availability from New Hampshire to Seattle. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated November 6, 2025.

Unlike in the morning, when flights are generally more expensive, you can save up to 49% on flights from New Hampshire to Seattle by exploring options for tickets in the evening.

How much does it cost to fly round-trip from New Hampshire to Seattle?

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 Delta, United Airlines, and Southwest fly from New Hampshire to Seattle in about 8h 32m. The time it takes to get you to your destination can typically vary by up to 2h 38m. There are 2481 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 Delta ($111), American Airlines ($116), and United Airlines ($129).

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

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

  • 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 $227). Flying from New Hampshire to Seattle in December is currently the most expensive (average of $479). 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
SeaTac
Tacoma
Tukwila
Lakewood
Olympia
Ocean Shores
Lynnwood
Edmonds
Leavenworth
Renton
Kirkland
Lacey
Kent
Cle Elum
Marysville
Puyallup
Federal Way
Fife
Issaquah
Aberdeen

Browse thousands of different options on Cheapflights for your next trip

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Top 3 airlines flying from New Hampshire to Seattle

Discover the top 3 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 November 6, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$342Average$416FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$344Average$545FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$379Average$471FlexibilityNo cancel feeOn-time63%

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