New Hampshire

$127+ 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 5/3. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — MHT
May 8 — May 151
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Cheap 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 April 8, 2026.

This SmartFares deal was found by Cheapflights users on 4/5. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/2811:35 am
SEA
-
BOS
Nonstop5h 39m
JetBlue
Wed 6/37:00 am
BOS
-
SEA
Nonstop6h 17m
JetBlue
Deal found 4/5$249
This SmartFares deal was found by Cheapflights users on 4/4. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/1911:30 am
SEA
-
BOS
Nonstop5h 37m
JetBlue
Tue 5/267:00 am
BOS
-
SEA
Nonstop6h 17m
JetBlue
Deal found 4/4$254
This Cheapflightsfares deal was found by Cheapflights users on 4/6. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/2011:30 am
SEA
-
BOS
Nonstop5h 37m
JetBlue
Wed 5/277:00 am
BOS
-
SEA
Nonstop6h 17m
JetBlue
Deal found 4/6$262
This KAYAK deal was found by Cheapflights users on 4/6. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/2311:35 am
SEA
-
BOS
Nonstop5h 39m
JetBlue
Tue 6/27:00 am
BOS
-
SEA
Nonstop6h 17m
JetBlue
Deal found 4/6$265
This Southwest deal was found by Cheapflights users on 4/7. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/56:00 am
SEA
-
BOS
1 stop7h 05m
Southwest
Tue 5/122:25 pm
BOS
-
SEA
2 stops12h 30m
Southwest
Deal found 4/7$268
This American Airlines deal was found by Cheapflights users on 4/6. 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.
Tue 5/51:19 pm
SEA
-
PWM
1 stop7h 54m
American Airlines
Tue 5/126:01 pm
PWM
-
SEA
1 stop9h 35m
American Airlines
Deal found 4/6$291
This American Airlines deal was found by Cheapflights users on 4/5. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/412:34 pm
SEA
-
PWM
1 stop7h 53m
American Airlines
Sat 5/96:00 am
PWM
-
SEA
1 stop8h 34m
American Airlines
Deal found 4/5$306
This United Airlines deal was found by Cheapflights users on 4/6. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/11:07 pm
SEA
-
PWM
1 stop7h 52m
United Airlines
Mon 5/44:50 pm
PWM
-
SEA
1 stop8h 57m
United Airlines
Deal found 4/6$321
This Delta deal was found by Cheapflights users on 4/5. 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.
Tue 4/1411:14 pm
SEA
-
PWM
2 stops11h 57m
Delta
Wed 4/225:21 am
PWM
-
SEA
2 stops11h 56m
Delta
Deal found 4/5$331
This Delta deal was found by Cheapflights users on 4/5. 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.
Sun 5/311:59 pm
SEA
-
PWM
2 stops12h 58m
Delta
Sat 5/94:49 pm
PWM
-
SEA
1 stop8h 59m
Delta
Deal found 4/5$336
This Delta deal was found by Cheapflights users on 4/5. 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.
Sun 5/311:59 pm
SEA
-
PWM
2 stops12h 58m
Delta
Tue 5/511:35 am
PWM
-
SEA
2 stops13h 14m
Delta
Deal found 4/5$342
This American Airlines deal was found by Cheapflights users on 4/7. 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.
Wed 5/2710:50 am
SEA
-
MHT
1 stop9h 06m
American Airlines
Wed 6/35:59 pm
MHT
-
SEA
1 stop9h 17m
American Airlines
Deal found 4/7$375

Find 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 April 8, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$249
(SmartFares)

One-way from

$127
(Kiwi.com)

Popular in

December

Cheapest in

September

Average price

$437
Provider with most accurate pricing for Seattle/Tacoma Intl-Boston Logan Intl flight deals.
Provider most trusted by Cheapflights users for Seattle/Tacoma Intl-Boston Logan Intl flights.
From Seattle/Tacoma Intl to New Hampshire
One-way flight from Seattle/Tacoma Intl to New Hampshire
Highest demand for flights based on searches. 11% potential increase in price ($49 potential increase over avg. RT price).
Cheapest flight prices on average. 3% potential price decrease ($13 potential savings vs. average RT price).
Average for round-trip flights in April 2026

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 April 8, 2026.
Use the filters below to find and compare flights from Seattle to New Hampshire that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

SeattlePortland

SEA - PWM

SEAPWM

Seattle/Tacoma Intl

Tue 5/12

5:30 am-4:07 pm

1 stop7h 37m

Portland

Fri 5/15

2:38 pm-10:45 pm

1 stop11h 07m

$351

SeattlePortland

SEA - PWM

SEAPWM

Seattle/Tacoma Intl

Tue 6/2

5:30 am-11:09 pm

2 stops14h 39m

Portland

Tue 6/16

11:02 am-8:25 pm

2 stops12h 23m

$356

SeattleBoston

SEA - BOS

SEABOS

Seattle/Tacoma Intl

Fri 5/1

5:15 am-5:10 pm

1 stop8h 55m

Boston Logan Intl

Wed 5/6

2:25 pm-11:35 pm

2 stops12h 10m

$357

SeattleBoston

SEA - BOS

SEABOS

Seattle/Tacoma Intl

Tue 9/1

5:20 am-4:10 pm

1 stop7h 50m

Boston Logan Intl

Sat 9/12

5:30 am-1:10 pm

2 stops10h 40m

$357

SeattleBoston

SEA - BOS

SEABOS

Seattle/Tacoma Intl

Sun 5/10

11:00 pm-7:35 am

Nonstop5h 35m

Boston Logan Intl

Fri 9/4

3:30 pm-7:00 pm

Nonstop6h 30m

$367

SeattlePortland

SEA - PWM

SEAPWM

Seattle/Tacoma Intl

Sat 5/16

5:30 am-11:09 pm

2 stops14h 39m

Portland

Sat 5/23

4:49 pm-10:48 pm

1 stop8h 59m

$385

SeattleBoston

SEA - BOS

SEABOS

Seattle/Tacoma Intl

Fri 6/12

3:59 pm-12:18 am

Nonstop5h 19m

Boston Logan Intl

Sun 6/21

7:25 pm-10:49 pm

Nonstop6h 24m

$392

SeattleBoston

SEA - BOS

SEABOS

Seattle/Tacoma Intl

Mon 5/11

11:00 pm-7:35 am

Nonstop5h 35m

Boston Logan Intl

Fri 5/15

7:30 pm-10:40 pm

Nonstop6h 10m

$392

SeattlePortland

SEA - PWM

SEAPWM

Seattle/Tacoma Intl

Wed 5/6

11:45 pm-2:10 pm

2 stops11h 25m

Portland

Mon 5/11

2:50 pm-12:55 am

2 stops13h 05m

$395

SeattleBoston

SEA - BOS

SEABOS

Seattle/Tacoma Intl

Tue 5/19

6:00 am-6:35 pm

1 stop9h 35m

Boston Logan Intl

Tue 5/26

7:20 am-4:55 pm

2 stops12h 35m

$397

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/4

Showing 1-10 of 57 resultsSorted by cheapest first
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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 $519). 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 April 8, 2026.
Read reviews from past customers who have flown Southwest 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.

Comfort

8.0

Food

7.0

Entertainment

7.5

Boarding

8.1

Crew

8.6

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.

Comfort

8.0

Food

7.0

Entertainment

7.5

Boarding

8.1

Crew

8.6

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.

Comfort

8.0

Food

7.0

Entertainment

7.5

Boarding

8.1

Crew

8.6

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.

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, Southwest, and United Airlines can get you from Seattle to New Hampshire in just under 7h 37m. Your travel time can differ by up to 1h 18m. 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?

  • 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 $519). 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.

Top 2 airlines flying from Seattle to New Hampshire

Discover the top 2 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 April 8, 2026.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$286Average$516FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$377Average$517FlexibilityNo cancel feeOn-time63%

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