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Cheap flights from Seattle to Boston from $219

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Seattle to Boston departing on 3/7. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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0 bags

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Find the cheapest flights from Seattle to Boston

Cheap round-trip flights

Enter your travel dates to find the best prices.
American Airlines Logo
10:57 pm - 11:21 am
SEA
-
MHT
9h 24m1 stop
American Airlines Logo
4:12 pm - 9:57 pm
MHT
-
SEA
8h 45m1 stop
$377American Airlines
Wed, Feb 18 - Sun, Feb 22
American Airlines Logo
7:15 am - 10:58 pm
SEA
-
MHT
12h 43m2 stops
American Airlines Logo
4:12 pm - 9:57 pm
MHT
-
SEA
8h 45m1 stop
$382American Airlines
Wed, Feb 18 - Sun, Feb 22
American Airlines Logo
12:45 pm - 11:46 pm
SEA
-
MHT
8h 01m1 stop
American Airlines Logo
4:06 pm - 10:07 pm
MHT
-
SEA
9h 01m1 stop
$429American Airlines
Fri, Jan 16 - Tue, Jan 20
American Airlines Logo
12:45 pm - 11:46 pm
SEA
-
MHT
8h 01m1 stop
American Airlines Logo
5:30 am - 3:34 pm
MHT
-
SEA
13h 04m2 stops
$462American Airlines
Fri, Jan 16 - Tue, Jan 20
United Airlines Logo
8:10 am - 6:51 pm
SEA
-
MHT
7h 41m1 stop
United Airlines Logo
2:17 pm - 8:57 pm
MHT
-
SEA
9h 40m1 stop
$467United Airlines
Fri, Jan 30 - Fri, Feb 6
United Airlines Logo
8:10 am - 6:51 pm
SEA
-
MHT
7h 41m1 stop
United Airlines Logo
2:17 pm - 10:43 pm
MHT
-
SEA
11h 26m2 stops
$472United Airlines
Fri, Jan 30 - Fri, Feb 6
American Airlines Logo
8:04 am - 11:50 pm
SEA
-
MHT
12h 46m2 stops
American Airlines Logo
11:42 am - 10:20 pm
MHT
-
SEA
13h 38m2 stops
$478American Airlines
Fri, Jan 30 - Fri, Feb 6
United Airlines Logo
5:00 am - 6:53 pm
SEA
-
MHT
10h 53m2 stops
United Airlines Logo
7:28 pm - 12:59 am
MHT
-
SEA
32h 31m2 stops
$490United Airlines
Wed, Feb 18 - Sun, Feb 22
United Airlines Logo
8:10 am - 6:51 pm
SEA
-
MHT
7h 41m1 stop
United Airlines Logo
7:26 pm - 8:57 pm
MHT
-
SEA
28h 31m1 stop
$498United Airlines
Tue, Jan 27 - Sat, Jan 31
United Airlines Logo
5:00 am - 6:51 pm
SEA
-
MHT
10h 51m2 stops
United Airlines Logo
7:26 pm - 8:57 pm
MHT
-
SEA
28h 31m1 stop
$503United Airlines
Tue, Jan 27 - Sat, Jan 31

United Airlines flights from Seattle to Manchester, New Hampshire

Our best United Airlines deals on Seattle to Manchester, New Hampshire flight tickets
United Airlines
Jan 30
SEA8:10 amSeattle/Tacoma Intl
7h 41m
1 stop
MHT6:51 pmManchester
Feb 6
MHT2:17 pmManchester
9h 40m
1 stop
SEA8:57 pmSeattle/Tacoma Intl
$467
Find similar
United Airlines
Jan 30
SEA8:10 amSeattle/Tacoma Intl
7h 41m
1 stop
MHT6:51 pmManchester
Feb 6
MHT2:17 pmManchester
11h 26m
2 stops
SEA10:43 pmSeattle/Tacoma Intl
$472
Find similar
United Airlines
Feb 18
SEA5:00 amSeattle/Tacoma Intl
10h 53m
2 stops
MHT6:53 pmManchester
Feb 22
MHT7:28 pmManchester
32h 31m
2 stops
SEA12:59 amSeattle/Tacoma Intl
$490
Find similar

American Airlines flights from Seattle to Manchester, New Hampshire

Our best American Airlines deals on Seattle to Manchester, New Hampshire flight tickets
American Airlines
Feb 18
SEA10:57 pmSeattle/Tacoma Intl
9h 24m
1 stop
MHT11:21 amManchester
Feb 22
MHT4:12 pmManchester
8h 45m
1 stop
SEA9:57 pmSeattle/Tacoma Intl
$377
Find similar
American Airlines
Feb 18
SEA7:15 amSeattle/Tacoma Intl
12h 43m
2 stops
MHT10:58 pmManchester
Feb 22
MHT4:12 pmManchester
8h 45m
1 stop
SEA9:57 pmSeattle/Tacoma Intl
$382
Find similar
American Airlines
Jan 16
SEA12:45 pmSeattle/Tacoma Intl
8h 01m
1 stop
MHT11:46 pmManchester
Jan 20
MHT4:06 pmManchester
9h 01m
1 stop
SEA10:07 pmSeattle/Tacoma Intl
$429
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Seattle to Manchester, 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, momondo users made 832,500 searches. Data last updated January 2, 2026.
Use the filters below to find and compare flights from Seattle to Manchester, New Hampshire that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

SeattleManchester

SEA - MHT

SEAMHT

Seattle/Tacoma Intl

Wed 2/18

10:57 pm-11:21 am

1 stop9h 24m

Manchester

Sun 2/22

4:12 pm-9:57 pm

1 stop8h 45m

$377

SeattleManchester

SEA - MHT

SEAMHT

Seattle/Tacoma Intl

Wed 2/18

7:15 am-10:58 pm

2 stops12h 43m

Manchester

Sun 2/22

4:12 pm-9:57 pm

1 stop8h 45m

$382

SeattleManchester

SEA - MHT

SEAMHT

Seattle/Tacoma Intl

Fri 1/16

12:45 pm-11:46 pm

1 stop8h 01m

Manchester

Tue 1/20

4:06 pm-10:07 pm

1 stop9h 01m

$429

SeattleManchester

SEA - MHT

SEAMHT

Seattle/Tacoma Intl

Fri 1/16

12:45 pm-11:46 pm

1 stop8h 01m

Manchester

Tue 1/20

5:30 am-3:34 pm

2 stops13h 04m

$462

SeattleManchester

SEA - MHT

SEAMHT

Seattle/Tacoma Intl

Fri 1/30

8:10 am-6:51 pm

1 stop7h 41m

Manchester

Fri 2/6

2:17 pm-8:57 pm

1 stop9h 40m

$467

SeattleManchester

SEA - MHT

SEAMHT

Seattle/Tacoma Intl

Fri 1/30

8:10 am-6:51 pm

1 stop7h 41m

Manchester

Fri 2/6

2:17 pm-10:43 pm

2 stops11h 26m

$472

SeattleManchester

SEA - MHT

SEAMHT

Seattle/Tacoma Intl

Fri 1/30

8:04 am-11:50 pm

2 stops12h 46m

Manchester

Fri 2/6

11:42 am-10:20 pm

2 stops13h 38m

$478

SeattleManchester

SEA - MHT

SEAMHT

Seattle/Tacoma Intl

Wed 2/18

5:00 am-6:53 pm

2 stops10h 53m

Manchester

Sun 2/22

7:28 pm-12:59 am

2 stops32h 31m

$490

SeattleManchester

SEA - MHT

SEAMHT

Seattle/Tacoma Intl

Tue 1/27

8:10 am-6:51 pm

1 stop7h 41m

Manchester

Sat 1/31

7:26 pm-8:57 pm

1 stop28h 31m

$498

SeattleManchester

SEA - MHT

SEAMHT

Seattle/Tacoma Intl

Tue 1/27

5:00 am-6:51 pm

2 stops10h 51m

Manchester

Sat 1/31

7:26 pm-8:57 pm

1 stop28h 31m

$503

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Boston from

How to get the cheapest flight ticket from Seattle to Manchester, New Hampshire

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to Manchester, New Hampshire?

If you aren’t able to travel during the month of January, then book flights to Manchester, New Hampshire from Seattle during September instead. Flights to Manchester, New Hampshire in September, while not as cheap as those in January, still average around $409.

How have Seattle to Manchester, New Hampshire flight prices changed over time?

When to book flights from Seattle to Manchester, New Hampshire

Are you open to changing your travel dates? Check out the ideal times to fly from Seattle to Manchester, New Hampshire according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Seattle to Manchester, New Hampshire (SEA to MHT) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Seattle to Manchester, New Hampshire

Fastest flight time

7h 36m

Direct flights

None
The fastest flight from Seattle to Manchester, New Hampshire takes 7h 36m
There are no direct flights from Seattle to Manchester, New Hampshire. There are no popular flight routes from Seattle to Manchester, New Hampshire.
Search flight deals

  • How far is Seattle/Tacoma Intl to Manchester by plane?

    The straight-line distance from Seattle/Tacoma Intl to Manchester is 2446.8 mi. Typically, this will take 7h 36m by plane in normal conditions.

  • When did momondo last update prices for flights from Seattle/Tacoma Intl Airport to Manchester Airport?

    Prices for flights from Seattle/Tacoma Intl Airport to Manchester Airport refresh daily.

  • How many operators does momondo search for flights from Seattle/Tacoma Intl Airport to Manchester Airport?

  • How old do you have to be to fly from Seattle/Tacoma Intl Airport to Manchester Airport?

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Seattle/Tacoma Intl Airport to Manchester Airport.

  • What documentation or ID do you need to fly to Manchester Airport?

    The travel and health documents you'll need for your trip to Manchester Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Manchester Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

  • What is the most popular airline from Seattle to Manchester, New Hampshire?

Best airlines flying from Seattle to Manchester, New Hampshire

Compare and see reviews for airlines that fly from Seattle to Manchester, New Hampshire with momondo
Airline
Rating
Free Cancellation
Price
United AirlinesPriceFrom $328Free CancellationRating
7.4
9,132 reviews
Search United Airlines flights
American AirlinesPriceFrom $333Free CancellationRating
7.2
11,074 reviews
Search American Airlines flights
SouthwestPriceFrom $377Free CancellationRating
8.0
4,254 reviews
Search Southwest flights

Traveling to a place near Boston?

Book flights to Boston if you plan to visit one of these locations
Keene

Why use momondo?

Why should I use momondo to find a flight deal from Seattle to Manchester?

Finding the right flight to Manchester from Seattle is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Manchester quick and easy, saving you time and money.

Can I find flights from Seattle to Manchester with flexible booking policies on momondo?

Flights from Seattle to Manchester with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

How can momondo help me find flights from Seattle to Manchester?

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Seattle to Manchester.

I’m not ready to book a flight from Seattle to Manchester right now. Can momondo alert me if prices change?

If you are simply researching potential flights to Manchester, momondo offers a useful price alert feature which will track prices for flights to Manchester from Seattle and alert you when they change.

An easier way to manage your Manchester, New Hampshire trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
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