HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
New Hampshire

$111+ 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 9/23. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — MHT
Oct 16 — Oct 231
Thu 10/16
Thu 10/23
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Seattle to New Hampshire with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

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 September 16, 2025.

Round-trip from

$175
(lastminute.com)

One-way from

$111
(Delta)

Popular in

December

Cheapest in

January

Average price

$337
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, 5% potential price rise
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($11 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in September 2025
Search Deals

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 September 16, 2025.

This lastminute.com deal was found by Cheapflights users on 9/14. 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 lastminute.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/181:10 pmSEA - BOS
Nonstop5h 36mJetBlue
Fri 10/248:20 amBOS - SEA
Nonstop6h 39mJetBlue
Deal found 9/14$175
This JetBlue deal was found by Cheapflights users on 9/15. 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.
Sat 10/181:10 pmSEA - BOS
Nonstop5h 36mJetBlue
Thu 10/238:20 amBOS - SEA
Nonstop6h 39mJetBlue
Deal found 9/15$187
This American Airlines deal was found by Cheapflights users on 9/13. 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 9/3011:05 pmSEA - BOS
1 stop8h 05mAmerican Airlines
Sat 10/412:52 pmBOS - SEA
1 stop10h 17mAmerican Airlines
Deal found 9/13$197
This American Airlines deal was found by Cheapflights users on 9/16. 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.
Fri 10/1710:54 pmSEA - BOS
1 stop10h 30mAmerican Airlines
Tue 10/215:44 pmBOS - SEA
1 stop9h 43mAmerican Airlines
Deal found 9/16$201
This CheapOair deal was found by Cheapflights users on 9/14. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/151:10 pmSEA - BOS
Nonstop5h 36mJetBlue
Wed 10/228:20 amBOS - SEA
Nonstop6h 39mJetBlue
Deal found 9/14$202
This Trip.com deal was found by Cheapflights users on 9/15. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/303:59 pmSEA - BOS
Nonstop5h 21mAlaska Airlines
Tue 11/47:00 amBOS - SEA
Nonstop6h 35mAlaska Airlines
Deal found 9/15$205
This Delta deal was found by Cheapflights users on 9/16. 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.
Mon 10/2711:15 pmSEA - PWM
1 stop9h 45mDelta
Fri 10/316:00 amPWM - SEA
1 stop9h 27mDelta
Deal found 9/16$221
This Delta deal was found by Cheapflights users on 9/16. 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 9/2311:40 pmSEA - PWM
1 stop8h 00mDelta
Sat 9/276:00 amPWM - SEA
2 stops13h 40mDelta
Deal found 9/16$226
This Delta deal was found by Cheapflights users on 9/16. 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.
Mon 9/2211:11 pmSEA - PWM
1 stop8h 37mDelta
Sat 9/276:00 amPWM - SEA
2 stops13h 40mDelta
Deal found 9/16$271
This JetBlue deal was found by Cheapflights users on 9/16. 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 10/611:56 pmSEA - PWM
1 stop10h 26mJetBlue
Thu 10/162:17 pmPWM - SEA
1 stop11h 19mJetBlue
Deal found 9/16$273
This American Airlines deal was found by Cheapflights users on 9/16. 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 9/16$275
This JetBlue deal was found by Cheapflights users on 9/16. 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.
Tue 10/711:40 pmSEA - PWM
1 stop10h 42mJetBlue
Thu 10/162:17 pmPWM - SEA
1 stop11h 19mJetBlue
Deal found 9/16$303

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 September 16, 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

Thu 10/30

10:05 pm-6:35 am

Nonstop5h 30m

Boston Logan Intl

Sun 11/2

7:20 am-10:45 am

Nonstop6h 25m

$217

SeattleBoston

SEA - BOS

SEABOS

Seattle/Tacoma Intl

Fri 11/7

10:05 pm-6:35 am

Nonstop5h 30m

Boston Logan Intl

Mon 11/10

11:10 am-2:36 pm

Nonstop6h 26m

$217

SeattleBoston

SEA - BOS

SEABOS

Seattle/Tacoma Intl

Tue 10/28

10:05 pm-6:35 am

Nonstop5h 30m

Boston Logan Intl

Fri 11/7

6:55 pm-10:22 pm

Nonstop6h 27m

$217

SeattlePortland

SEA - PWM

SEAPWM

Seattle/Tacoma Intl

Wed 10/29

6:00 am-4:03 pm

1 stop7h 03m

Portland

Mon 11/3

4:48 pm-10:03 pm

1 stop8h 15m

$221

SeattleBoston

SEA - BOS

SEABOS

Seattle/Tacoma Intl

Wed 10/15

11:40 pm-11:45 am

1 stop9h 05m

Boston Logan Intl

Wed 10/22

8:20 am-11:59 am

Nonstop6h 39m

$236

SeattleBoston

SEA - BOS

SEABOS

Seattle/Tacoma Intl

Sat 10/25

3:35 pm-11:59 pm

Nonstop5h 24m

Boston Logan Intl

Wed 10/29

6:59 pm-10:20 am

1 stop18h 21m

$237

SeattleBoston

SEA - BOS

SEABOS

Seattle/Tacoma Intl

Wed 10/15

1:10 pm-9:46 pm

Nonstop5h 36m

Boston Logan Intl

Tue 10/21

8:20 am-11:59 am

Nonstop6h 39m

$241

SeattleBoston

SEA - BOS

SEABOS

Seattle/Tacoma Intl

Thu 12/4

8:29 pm-3:37 pm

1 stop16h 08m

Boston Logan Intl

Mon 12/8

6:20 pm-9:51 pm

Nonstop6h 31m

$247

SeattleBoston

SEA - BOS

SEABOS

Seattle/Tacoma Intl

Mon 10/27

3:59 pm-12:20 am

Nonstop5h 21m

Boston Logan Intl

Wed 11/5

9:00 am-12:35 pm

Nonstop6h 35m

$257

SeattleBoston

SEA - BOS

SEABOS

Seattle/Tacoma Intl

Tue 9/30

7:50 am-4:22 pm

Nonstop5h 32m

Boston Logan Intl

Wed 10/8

7:20 am-10:45 am

Nonstop6h 25m

$257

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/16

Showing 1-10 of 60 results
1
2
3
...
6

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
No data available for this route at this time. Please check back soon.

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 September 16, 2025.
Read reviews from past customers who have flown Alaska Airlines, 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.
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Crew

8.5

Food

7.1

Comfort

7.8

Entertainment

7.1

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Crew

8.5

Food

7.1

Comfort

7.8

Entertainment

7.1

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
Southwest
8.0
Very good
4,242 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Crew

8.5

Food

7.1

Comfort

7.8

Entertainment

7.1

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
American Airlines
7.2
Good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Crew

8.5

Food

7.1

Comfort

7.8

Entertainment

7.1

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.

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, JetBlue, and Alaska Airlines can get you from Seattle to New Hampshire in just under 5h 24m. Your travel time can differ by up to 3h 41m. 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 Delta, with whom users have recently found tickets for as low as $111. However, be on the lookout for offers from Alaska Airlines and Hawaiian 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 $398). 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

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 Seattle to New Hampshire

See prices for flight routes from nearby airports that may be better suited for you.
Seattle to Las Vegas flights
Seattle to Los Angeles flights
Seattle to Dallas/Fort Worth flights
Seattle to Sky Harbor Intl flights
Seattle to O'Hare Intl flights
Seattle to Ontario flights
Seattle to San Francisco flights
Seattle to Honolulu flights
Seattle to San Diego flights
Seattle to John F Kennedy Intl flights
Seattle to Newark flights
Portland to Las Vegas flights
Seattle to Orlando flights
Everett to Las Vegas flights
Portland to Los Angeles flights
Portland to Sky Harbor Intl flights
Seattle to Denver flights
Seattle to Dulles Intl flights
Seattle to Santa Ana flights
Seattle to Boston flights
Seattle to Atlanta flights
Seattle to LaGuardia flights
Seattle to Reagan-National flights
Seattle to Nashville flights
Seattle to Hobby flights
Seattle to Baltimore flights
Seattle to Miami flights
Seattle to Kailua-Kona flights
Seattle to Salt Lake City flights
Everett to Sky Harbor Intl flights
Seattle to Austin flights
Seattle to New Orleans flights
Seattle to Kahului flights
Seattle to George Bush Intcntl flights
Portland to John F Kennedy Intl flights
Portland to O'Hare Intl flights
Portland to Ontario flights
Seattle to San Jose flights
Seattle to Detroit flights
Portland to Denver flights
Seattle to Lihue flights
Seattle to Midway flights
Portland to Honolulu flights
Seattle to Palm Springs flights
Seattle to Philadelphia flights
Portland to Dallas/Fort Worth flights
Portland to Newark flights
Seattle to Burbank flights
Portland to San Diego flights
Seattle to Minneapolis flights

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 September 16, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$336Average$566FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$377Average$526FlexibilityNo cancel feeOn-time63%
Alaska AirlinesCheapest$487Average$746FlexibilityNo cancel feeOn-time75%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.