$182+ Cheap flights from New Hampshire to Seattle (SEA)
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/14. Fares are subject to change and may not be available on all flights or dates of travel.
MHT — SEA
Oct 24 — Oct 311
Round-trip
1 adult, Economy
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Find cheap flights from New Hampshire to Seattle 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
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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 New Hampshire to Seattle
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Best
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One-way
Cheapest flights from New Hampshire to SeattleExplore 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 September 24, 2026.
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 September 24, 2026.
This American Airlines deal was found by Cheapflights users on 9/20. 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.
Wed 10/146:00 am -
1 stop9h 06m
Sat 10/1711:59 pm -
1 stop9h 14m
Deal found 9/20![American Airlines logo]()
$363
This Southwest deal was found by Cheapflights users on 9/20. 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 12/127:45 am -
1 stop12h 00m
Mon 12/146:30 am -
1 stop7h 30m
Deal found 9/20![Southwest logo]()
$368
This Southwest deal was found by Cheapflights users on 9/23. 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 12/162:10 pm -
2 stops12h 20m
Wed 1/66:55 am -
2 stops11h 55m
Deal found 9/23![Southwest logo]()
$373
This Southwest deal was found by Cheapflights users on 9/21. 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.
Fri 11/66:35 pm -
1 stop9h 10m
Wed 11/1111:20 am -
1 stop7h 00m
Deal found 9/21![Southwest logo]()
$375
This Southwest deal was found by Cheapflights users on 9/19. 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.
Wed 11/48:15 am -
2 stops13h 25m
Mon 11/95:30 am -
1 stop8h 10m
Deal found 9/19![Southwest logo]()
$380
This Southwest deal was found by Cheapflights users on 9/20. 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.
Thu 10/221:40 pm -
2 stops14h 00m
Mon 10/266:50 pm -
2 stops10h 20m
Deal found 9/20![Southwest logo]()
$385
This Southwest deal was found by Cheapflights users on 9/23. 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 11/711:30 am -
2 stops13h 25m
Fri 11/135:30 am -
1 stop13h 30m
Deal found 9/23![Southwest logo]()
$386
This United Airlines deal was found by Cheapflights users on 9/22. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/152:50 pm -
1 stop8h 47m
Wed 10/2111:13 pm -
2 stops12h 02m
Deal found 9/22![United Airlines logo]()
$392
This United Airlines deal was found by Cheapflights users on 9/19. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/209:25 am -
2 stops11h 54m
Thu 10/299:05 am -
2 stops11h 54m
Deal found 9/19![United Airlines logo]()
$397
This Southwest deal was found by Cheapflights users on 9/20. 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.
Fri 11/65:30 am -
2 stops15h 30m
Mon 11/95:30 am -
1 stop8h 10m
Deal found 9/20![Southwest logo]()
$400
This American Airlines deal was found by Cheapflights users on 9/20. 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.
Wed 10/147:21 am -
2 stops11h 22m
Wed 10/2110:31 am -
1 stop10h 42m
Deal found 9/20![American Airlines logo]()
$402
Best flights from New Hampshire to SeattleDiscover carefully curated flight deals from New Hampshire to Seattle that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 24, 2026.
Discover carefully curated flight deals from New Hampshire to Seattle that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 24, 2026.
This Southwest deal was found by Cheapflights users on 9/23. 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 2/167:45 am -
1 stop8h 15m
Mon 2/225:30 am -
2 stops11h 35m
Deal found 9/23![Southwest logo]()
$368
This United Airlines deal was found by Cheapflights users on 9/19. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/209:25 am -
2 stops11h 54m
Thu 10/299:05 am -
2 stops11h 54m
Deal found 9/19![United Airlines logo]()
$397
This Southwest deal was found by Cheapflights users on 9/21. 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.
Fri 10/161:40 pm -
2 stops14h 00m
Mon 10/196:50 pm -
2 stops10h 20m
Deal found 9/21![Southwest logo]()
$472
This United Airlines deal was found by Cheapflights users on 9/23. 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 10/319:25 am -
2 stops14h 22m
Tue 11/37:00 am -
2 stops13h 59m
Deal found 9/23![United Airlines logo]()
$515
This Southwest deal was found by Cheapflights users on 9/21. 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.
Tue 10/67:40 am -
1 stop8h 05m
Sat 10/105:25 am -
2 stops11h 00m
Deal found 9/21![Southwest logo]()
$612
This United Airlines deal was found by Cheapflights users on 9/23. 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 11/262:38 pm -
1 stop9h 18m
Mon 11/3010:56 pm -
2 stops12h 07m
Deal found 9/23![United Airlines logo]()
$620
This Southwest deal was found by Cheapflights users on 9/21. 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.
Mon 10/56:55 pm -
1 stop8h 45m
Fri 10/96:50 pm -
2 stops10h 35m
Deal found 9/21![Southwest logo]()
$612
This United Airlines deal was found by Cheapflights users on 9/19. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/62:38 pm -
2 stops13h 21m
Tue 11/1010:50 am -
2 stops10h 09m
Deal found 9/19![United Airlines logo]()
$625
Last-minute flights from New Hampshire to SeattleDiscover last-minute flight deals from New Hampshire to Seattle. Data last updated September 24, 2026 and is based on user searches.
Discover last-minute flight deals from New Hampshire to Seattle. Data last updated September 24, 2026 and is based on user searches.
This American Airlines deal was found by Cheapflights users on 9/20. 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.
Wed 10/146:00 am -
1 stop9h 06m
Sat 10/1711:59 pm -
1 stop9h 14m
Deal found 9/20![American Airlines logo]()
$363
This American Airlines deal was found by Cheapflights users on 9/20. 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.
Wed 10/147:21 am -
2 stops11h 22m
Wed 10/2110:31 am -
1 stop10h 42m
Deal found 9/20![American Airlines logo]()
$402
This United Airlines deal was found by Cheapflights users on 9/22. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/152:50 pm -
1 stop8h 47m
Wed 10/2111:13 pm -
2 stops12h 02m
Deal found 9/22![United Airlines logo]()
$392
This American Airlines deal was found by Cheapflights users on 9/21. 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.
Fri 10/165:05 pm -
1 stop10h 31m
Mon 10/199:42 pm -
1 stop10h 27m
Deal found 9/21![American Airlines logo]()
$375
This Southwest deal was found by Cheapflights users on 9/21. 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.
Fri 10/166:55 pm -
1 stop8h 45m
Mon 10/196:50 pm -
2 stops10h 20m
Deal found 9/21![Southwest logo]()
$412
This United Airlines deal was found by Cheapflights users on 9/19. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/209:25 am -
2 stops11h 54m
Thu 10/299:05 am -
2 stops11h 54m
Deal found 9/19![United Airlines logo]()
$397
This Southwest deal was found by Cheapflights users on 9/20. 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.
Thu 10/226:55 pm -
1 stop8h 45m
Mon 10/266:50 pm -
2 stops10h 20m
Deal found 9/20![Southwest logo]()
$368
One-way flights from New Hampshire to SeattleSearch for one-way flight options from New Hampshire to Seattle. Find affordable one-way fares based on user searches. Data last updated September 24, 2026.
Search for one-way flight options from New Hampshire to Seattle. Find affordable one-way fares based on user searches. Data last updated September 24, 2026.
This American Airlines deal was found by Cheapflights users on 9/21. 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.
Wed 10/142:17 pm -
1 stop11h 53m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/21![American Airlines logo]()
$182
This Southwest deal was found by Cheapflights users on 9/23. 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.
Mon 11/23:10 pm -
2 stops13h 05m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/23![Southwest logo]()
$187
This Southwest deal was found by Cheapflights users on 9/21. 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 10/151:40 pm -
2 stops14h 00m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/21![Southwest logo]()
$242
This United Airlines deal was found by Cheapflights users on 9/23. 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 10/152:50 pm -
1 stop8h 47m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/23![United Airlines logo]()
$259
This American Airlines deal was found by Cheapflights users on 9/23. 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 10/71:55 pm -
1 stop9h 20m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/23![American Airlines logo]()
$304
This Southwest deal was found by Cheapflights users on 9/23. 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 10/71:50 pm -
2 stops13h 05m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/23![Southwest logo]()
$309
This United Airlines deal was found by Cheapflights users on 9/23. 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 10/149:25 am -
1 stop9h 26m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/23![United Airlines logo]()
$357
This Kiwi.com deal was found by Cheapflights users on 9/23. 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.
Mon 11/23:14 pm -
3 stops50h 58m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/23![Multiple Airlines logo]()
$411
This Alaska Airlines deal was found by Cheapflights users on 9/24. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/112:18 pm -
1 stop10h 55m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/24![Alaska Airlines logo]()
$435
This Kiwi.com deal was found by Cheapflights users on 9/21. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/1412:18 pm -
3 stops29h 54m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/21![Multiple Airlines logo]()
$439
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 September 24, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $363 (American Airlines) |
One-way from | $182 (American Airlines) |
Popular in | December |
Cheapest in | March |
Average price | $417 |
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 7,457,451 searches. Data last updated September 24, 2026.
Use the filters below to find and compare flights from New Hampshire to Seattle that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
ManchesterSeattle
MHT Manchester - SEA Seattle/Tacoma Intl
MHTSEA
Manchester
Wed 10/14
2:17 pm-11:10 pm
1 stop11h 53m
Seattle/Tacoma Intl
Wed 12/31
12:00 am-3:00 am
Nonstop0h 00m
$182
ManchesterSeattle
MHT Manchester - SEA Seattle/Tacoma Intl
MHTSEA
Manchester
Mon 11/2
6:35 pm-12:40 am
1 stop9h 05m
Seattle/Tacoma Intl
Wed 12/31
12:00 am-3:00 am
Nonstop0h 00m
$182
ManchesterSeattle
MHT Manchester - SEA Seattle/Tacoma Intl
MHTSEA
Manchester
Thu 10/15
1:40 pm-12:40 am
2 stops14h 00m
Seattle/Tacoma Intl
Wed 12/31
12:00 am-3:00 am
Nonstop0h 00m
$242
Quickest round-trip
ManchesterSeattle
MHT Manchester - SEA Seattle/Tacoma Intl
MHTSEA
Manchester
Thu 10/15
2:50 pm-8:37 pm
1 stop8h 47m
Seattle/Tacoma Intl
Wed 12/31
12:00 am-3:00 am
Nonstop0h 00m
$259
ManchesterSeattle
MHT Manchester - SEA Seattle/Tacoma Intl
MHTSEA
Manchester
Wed 10/7
1:50 pm-11:55 pm
2 stops13h 05m
Seattle/Tacoma Intl
Wed 12/31
12:00 am-3:00 am
Nonstop0h 00m
$309
ManchesterSeattle
MHT Manchester - SEA Seattle/Tacoma Intl
MHTSEA
Manchester
Tue 2/16
7:45 am-1:00 pm
1 stop8h 15m
Seattle/Tacoma Intl
Mon 2/22
5:30 am-8:05 pm
2 stops11h 35m
$368
ManchesterSeattle
MHT Manchester - SEA Seattle/Tacoma Intl
MHTSEA
Manchester
Tue 10/20
9:25 am-6:19 pm
2 stops11h 54m
Seattle/Tacoma Intl
Thu 10/29
9:05 am-11:59 pm
2 stops11h 54m
$397
ManchesterSeattle
MHT Manchester - SEA Seattle/Tacoma Intl
MHTSEA
Manchester
Sun 11/1
12:18 pm-8:13 pm
1 stop10h 55m
Seattle/Tacoma Intl
Wed 12/31
12:00 am-3:00 am
Nonstop0h 00m
$435
ManchesterSeattle
MHT Manchester - SEA Seattle/Tacoma Intl
MHTSEA
Manchester
Wed 10/14
12:18 pm-3:12 pm
3 stops29h 54m
Seattle/Tacoma Intl
Wed 12/31
12:00 am-3:00 am
Nonstop0h 00m
$439
ManchesterSeattle
MHT Manchester - SEA Seattle/Tacoma Intl
MHTSEA
Manchester
Fri 10/16
1:40 pm-12:40 am
2 stops14h 00m
Seattle/Tacoma Intl
Mon 10/19
6:50 pm-8:10 am
2 stops10h 20m
$472
Showing 1-10 of 19 resultsSorted by cheapest first
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.
MHT-SEA
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
USNH-SEA
MHT-SEA
How much does it cost to fly round-trip from New Hampshire to Seattle?
Airfare is below average for this route at the moment.
New Hampshire to Seattle flights typically cost between $423 and $656 in October.The cheapest round-trip price found within the last 5 days was $363 on American Airlines (Oct 14-Oct 17).
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.
Traveling to a place near Seattle?
Book flights to Seattle if you plan to visit one of these locationsSeaTac
Renton
Tacoma
Lacey
Leavenworth
Olympia
Tukwila
Snoqualmie
Puyallup
Lynnwood
Centralia
Kent
Tumwater
Ellensburg
Issaquah
Marysville
Ocean Shores
Lakewood
Fife
Poulsbo
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
Complete your trip
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Alternative routes for New Hampshire to Seattle
See prices for flight routes from nearby airports that may be better suited for you.
Complete your trip
Complete your trip to Seattle by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from New Hampshire to Seattle by cabin class
Find flights from New Hampshire to Seattle, based on your preferred cabin class, be it economy, premium economy, business, or first class.
New Hampshire and Seattle flights
Browse other New Hampshire and Seattle flight options. Last updated on September 24, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Other flights to Seattle
Explore flights to Seattle departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on September 24, 2026.
New Hampshire to Seattle flights
Consider these flights traveling from New Hampshire to Seattle.
Top 2 airlines flying from New Hampshire to Seattle
Discover the top 2 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 7,457,451 searches. Data last updated September 24, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$374 | Average$538 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$404 | Average$567 | FlexibilityNo cancel fee | On-time63% |