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Cheap flights from Seattle to Boston from $159

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 9/24. 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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Cheap round-trip flights

United Airlines Logo
8:10 am - 6:49 pmSEA-MHT
7h 39m1 stop
United Airlines Logo
2:32 pm - 8:54 pmMHT-SEA
9h 22m1 stop
$307United Airlines
Find Deal
Thu, Dec 4 - Mon, Dec 8
United Airlines Logo
8:10 am - 6:49 pmSEA-MHT
7h 39m1 stop
United Airlines Logo
2:32 pm - 12:59 amMHT-SEA
13h 27m2 stops
$312United Airlines
Find Deal
Thu, Dec 4 - Mon, Dec 8
United Airlines Logo
5:05 am - 6:49 pmSEA-MHT
10h 44m2 stops
United Airlines Logo
2:32 pm - 12:59 amMHT-SEA
13h 27m2 stops
$317United Airlines
Find Deal
Thu, Dec 4 - Mon, Dec 8
United Airlines Logo
7:34 pm - 10:42 amSEA-MHT
12h 08m2 stops
United Airlines Logo
1:30 pm - 8:42 pmMHT-SEA
10h 12m1 stop
$343United Airlines
Find Deal
Fri, Sep 19 - Tue, Sep 23
American Airlines Logo
1:02 pm - 11:59 pmSEA-MHT
7h 57m1 stop
American Airlines Logo
3:22 pm - 10:29 pmMHT-SEA
10h 07m1 stop
$349American Airlines
Find Deal
Thu, Sep 25 - Tue, Sep 30
American Airlines Logo
1:02 pm - 11:59 pmSEA-MHT
7h 57m1 stop
American Airlines Logo
12:08 pm - 8:09 pmMHT-SEA
11h 01m2 stops
$366American Airlines
Find Deal
Thu, Sep 25 - Tue, Sep 30
Southwest Logo
5:15 am - 3:00 pmSEA-MHT
6h 45m1 stop
Southwest Logo
3:50 pm - 11:45 pmMHT-SEA
10h 55m2 stops
$367Southwest
Find Deal
Thu, Oct 16 - Tue, Oct 28
Southwest Logo
8:20 am - 11:40 pmSEA-MHT
12h 20m2 stops
Southwest Logo
5:00 am - 12:35 pmMHT-SEA
10h 35m2 stops
$378Southwest
Find Deal
Thu, Oct 16 - Tue, Oct 28
Alaska Airlines Logo
9:23 pm - 9:36 amSEA-MHT
9h 13m1 stop
Alaska Airlines Logo
3:26 pm - 10:32 pmMHT-SEA
10h 06m1 stop
$538Alaska Airlines
Find Deal
Mon, Oct 20 - Thu, Oct 23
Alaska Airlines Logo
9:25 pm - 12:09 amSEA-MHT
23h 44m2 stops
Alaska Airlines Logo
12:08 pm - 10:29 pmMHT-SEA
13h 21m2 stops
$548Alaska Airlines
Find Deal
Thu, Sep 25 - Tue, Sep 30

American Airlines flights from Seattle to Manchester, New Hampshire

Our best American Airlines deals on Seattle to Manchester, New Hampshire flight tickets
American Airlines
Sep 5
SEA10:11 amSeattle/Tacoma Intl
9h 13m
1 stop
MHT10:24 pmManchester
Sep 27
MHT12:38 pmManchester
10h 31m
1 stop
SEA8:09 pmSeattle/Tacoma Intl
$327
Find similar
American Airlines
Sep 4
SEA8:34 amSeattle/Tacoma Intl
10h 47m
1 stop
MHT10:21 pmManchester
Sep 17
MHT12:38 pmManchester
10h 31m
1 stop
SEA8:09 pmSeattle/Tacoma Intl
$332
Find similar
American Airlines
Sep 5
SEA10:11 amSeattle/Tacoma Intl
10h 58m
2 stops
MHT12:09 amManchester
Sep 27
MHT11:25 amManchester
11h 44m
2 stops
SEA8:09 pmSeattle/Tacoma Intl
$337
Find similar

Alaska Airlines flights from Seattle to Manchester, New Hampshire

Our best Alaska Airlines deals on Seattle to Manchester, New Hampshire flight tickets
Alaska Airlines
Oct 20
SEA9:23 pmSeattle/Tacoma Intl
9h 13m
1 stop
MHT9:36 amManchester
Oct 23
MHT3:26 pmManchester
10h 06m
1 stop
SEA10:32 pmSeattle/Tacoma Intl
$538
Find similar
Alaska Airlines
Sep 25
SEA9:25 pmSeattle/Tacoma Intl
23h 44m
2 stops
MHT12:09 amManchester
Sep 30
MHT12:08 pmManchester
13h 21m
2 stops
SEA10:29 pmSeattle/Tacoma Intl
$548
Find similar
Alaska Airlines
Oct 21
SEA9:23 pmSeattle/Tacoma Intl
9h 13m
1 stop
MHT9:36 amManchester
Oct 23
MHT3:26 pmManchester
10h 06m
1 stop
SEA10:32 pmSeattle/Tacoma Intl
$567
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 August 28, 2025.
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

Thu 12/4

8:10 am-6:49 pm

1 stop7h 39m

Manchester

Mon 12/8

2:32 pm-8:54 pm

1 stop9h 22m

$307

SeattleManchester

SEA - MHT

SEAMHT

Seattle/Tacoma Intl

Thu 12/4

8:10 am-6:49 pm

1 stop7h 39m

Manchester

Mon 12/8

2:32 pm-12:59 am

2 stops13h 27m

$312

SeattleManchester

SEA - MHT

SEAMHT

Seattle/Tacoma Intl

Thu 12/4

5:05 am-6:49 pm

2 stops10h 44m

Manchester

Mon 12/8

2:32 pm-12:59 am

2 stops13h 27m

$317

SeattleManchester

SEA - MHT

SEAMHT

Seattle/Tacoma Intl

Fri 9/19

7:34 pm-10:42 am

2 stops12h 08m

Manchester

Tue 9/23

1:30 pm-8:42 pm

1 stop10h 12m

$343

SeattleManchester

SEA - MHT

SEAMHT

Seattle/Tacoma Intl

Thu 9/25

1:02 pm-11:59 pm

1 stop7h 57m

Manchester

Tue 9/30

3:22 pm-10:29 pm

1 stop10h 07m

$349

SeattleManchester

SEA - MHT

SEAMHT

Seattle/Tacoma Intl

Thu 9/25

1:02 pm-11:59 pm

1 stop7h 57m

Manchester

Tue 9/30

12:08 pm-8:09 pm

2 stops11h 01m

$366

SeattleManchester

SEA - MHT

SEAMHT

Seattle/Tacoma Intl

Thu 10/16

5:15 am-3:00 pm

1 stop6h 45m

Manchester

Tue 10/28

3:50 pm-11:45 pm

2 stops10h 55m

$367

SeattleManchester

SEA - MHT

SEAMHT

Seattle/Tacoma Intl

Thu 10/16

8:20 am-11:40 pm

2 stops12h 20m

Manchester

Tue 10/28

5:00 am-12:35 pm

2 stops10h 35m

$378

SeattleManchester

SEA - MHT

SEAMHT

Seattle/Tacoma Intl

Mon 10/20

9:23 pm-9:36 am

1 stop9h 13m

Manchester

Thu 10/23

3:26 pm-10:32 pm

1 stop10h 06m

$538

SeattleManchester

SEA - MHT

SEAMHT

Seattle/Tacoma Intl

Thu 9/25

9:25 pm-12:09 am

2 stops23h 44m

Manchester

Tue 9/30

12:08 pm-10:29 pm

2 stops13h 21m

$548

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 day to depart on your flight to Manchester, New Hampshire?

Our data shows that Tuesday is the least expensive day to fly to Manchester, New Hampshire. Tickets to fly out on this day can be as low as $502. Be sure to avoid booking your departure on a Saturday as prices are generally higher than usual. According to our data, the average ticket price to Manchester, New Hampshire on Saturday is $727.

What is the cheapest time of day to depart on your flight to Manchester, New Hampshire?

Our most recent data shows that the best time of day to fly to Manchester, New Hampshire is at noon. Flights from Seattle to Manchester, New Hampshire during this time can be as low as $568. Flights in the morning are often more expensive with an average ticket price of $679.

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

Direct flights

None
There are no direct flights from Seattle to Manchester, New Hampshire. There are no popular flight routes from Seattle to Manchester, New Hampshire.
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  • 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 6h 45m 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
American AirlinesPriceFrom $336Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
United AirlinesPriceFrom $366Free CancellationRating
7.4
8,944 reviews
Search United Airlines flights
SouthwestPriceFrom $412Free CancellationRating
8.0
4,242 reviews
Search Southwest flights
Alaska AirlinesPriceFrom $487Free CancellationRating
8.0
10,000 reviews
Search Alaska Airlines 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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