Looking for more low-fare flights?
Check out the Low Fare Calendar to find a fare that works for you. Just choose the month you want to depart and return, and we’ll show you the best fares available.
Find low faresSouthwest® flights from Manchester, NH to Seattle/Tacoma from $193
expand_more
1 Passenger
expand_morePromo Code
expand_moretoday
today
Low fares from Manchester, NH to Seattle/Tacoma
$
Manchester, NH (MHT)to
Seattle/Tacoma (SEA)
Depart: 04/09/2026
One-way
Basic
From
$193
Seen: 9 hrs ago
Manchester, NH (MHT)to
Seattle/Tacoma (SEA)
Depart: 04/23/2026
One-way
Basic
From
$193
Seen: 8 hrs ago
Manchester, NH (MHT)to
Seattle/Tacoma (SEA)
Depart: 04/09/2026
One-way
Choice
From
$233
Seen: 9 hrs ago
Manchester, NH (MHT)to
Seattle/Tacoma (SEA)
Depart: 04/23/2026
One-way
Choice
From
$233
Seen: 8 hrs ago
Manchester, NH (MHT)to
Seattle/Tacoma (SEA)
Depart: 02/23/2026
One-way
Basic
From
$254
Seen: 15 hrs ago
Manchester, NH (MHT)to
Seattle/Tacoma (SEA)
Depart: 03/27/2026
One-way
Basic
From
$279
Seen: 18 hrs ago
Explore flights from Manchester, NH to Seattle/Tacoma
location_on
location_on
Flight Details
Departing from:
Manchester-Boston Regional Airport
Arriving at:
Seattle/Tacoma International Airport
Distance:
2459 miles
Route Information
35† Weekly flights
† Weekly flights based on DOT published scheduled average flights Monday through Sunday between 9/1/2025 and 9/30/2025. Note: route may not operate every day of the week.
‡ Nonstop flights based on DOT published scheduled average flights Monday through Sunday between 9/1/2025 and 9/30/2025.
Questions we hear the most
There are 35 weekly flights from Manchester, NH to Seattle/Tacoma on Southwest Airlines.
To find the lowest fares by day and time to fly Manchester, NH to Seattle/Tacoma with Southwest, check out our Low Fare Calendar.
You can rent a car at Seattle/Tacoma International Airport book yours with your flight.
Yes! Flights from Manchester, NH to Seattle/Tacoma—or from here or there to anywhere—can be changed with no change fees. Fare difference may apply.
Check the status of your upcoming Southwest flight.
Check out the Southwest Airlines® Help Center for answers about everything Southwest.