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Cheap flights from Seattle to Boston from $155

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 4/14. 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
11:16 am - 10:51 pm
SEA
-
MHT
8h 35m
1 stop
American Airlines Logo
6:46 am - 2:27 pm
MHT
-
SEA
10h 41m
1 stop
$359American Airlines
Wed, Apr 29 - Tue, May 5
Southwest Logo
6:25 pm - 8:30 am
SEA
-
MHT
11h 05m
2 stops
Southwest Logo
7:30 am - 12:45 pm
MHT
-
SEA
8h 15m
1 stop
$364Southwest
Wed, Apr 29 - Tue, May 5
Southwest Logo
6:25 pm - 8:30 am
SEA
-
MHT
11h 05m
2 stops
Southwest Logo
3:45 pm - 12:10 am
MHT
-
SEA
11h 25m
2 stops
$369Southwest
Wed, Apr 29 - Tue, May 5
American Airlines Logo
10:57 pm - 9:57 am
SEA
-
MHT
8h 00m
1 stop
American Airlines Logo
5:41 pm - 12:36 am
MHT
-
SEA
9h 55m
1 stop
$379American Airlines
Mon, Apr 6 - Mon, Apr 13
Southwest Logo
5:00 am - 9:50 pm
SEA
-
MHT
13h 50m
1 stop
Southwest Logo
3:45 pm - 12:10 am
MHT
-
SEA
11h 25m
2 stops
$390Southwest
Sat, Mar 28 - Tue, Apr 14
American Airlines Logo
10:57 pm - 9:57 am
SEA
-
MHT
8h 00m
1 stop
American Airlines Logo
5:41 pm - 12:36 am
MHT
-
SEA
9h 55m
1 stop
$400American Airlines
Mon, Apr 6 - Mon, Apr 13
American Airlines Logo
11:33 pm - 11:42 am
SEA
-
MHT
9h 09m
1 stop
American Airlines Logo
5:41 pm - 12:36 am
MHT
-
SEA
9h 55m
1 stop
$408American Airlines
Fri, Apr 10 - Mon, Apr 13
Southwest Logo
5:00 am - 9:50 pm
SEA
-
MHT
13h 50m
1 stop
Southwest Logo
7:30 am - 12:45 pm
MHT
-
SEA
8h 15m
1 stop
$423Southwest
Sat, Mar 28 - Tue, Apr 14
Southwest Logo
10:50 am - 9:25 pm
SEA
-
MHT
7h 35m
1 stop
Southwest Logo
5:50 am - 10:45 am
MHT
-
SEA
7h 55m
1 stop
$437Southwest
Thu, Aug 13 - Sat, Aug 22
Southwest Logo
6:15 am - 9:50 pm
SEA
-
MHT
12h 35m
2 stops
Southwest Logo
5:50 am - 10:45 am
MHT
-
SEA
7h 55m
1 stop
$442Southwest
Thu, Aug 13 - Sat, Aug 22

American Airlines flights from Seattle to Manchester, New Hampshire

Our best American Airlines deals on Seattle to Manchester, New Hampshire flight tickets
American Airlines
Apr 29
SEA11:16 amSeattle/Tacoma Intl
8h 35m
1 stop
MHT10:51 pmManchester
May 5
MHT6:46 amManchester
10h 41m
1 stop
SEA2:27 pmSeattle/Tacoma Intl
$359
American Airlines
Apr 6
SEA10:57 pmSeattle/Tacoma Intl
8h 00m
1 stop
MHT9:57 amManchester
Apr 13
MHT5:41 pmManchester
9h 55m
1 stop
SEA12:36 amSeattle/Tacoma Intl
$379
American Airlines
Apr 6
SEA10:57 pmSeattle/Tacoma Intl
8h 00m
1 stop
MHT9:57 amManchester
Apr 13
MHT5:41 pmManchester
9h 55m
1 stop
SEA12:36 amSeattle/Tacoma Intl
$400

United Airlines flights from Seattle to Manchester, New Hampshire

Our best United Airlines deals on Seattle to Manchester, New Hampshire flight tickets
United Airlines
May 5
SEA8:10 amSeattle/Tacoma Intl
7h 46m
1 stop
MHT6:56 pmManchester
May 6
MHT2:36 pmManchester
9h 17m
1 stop
SEA8:53 pmSeattle/Tacoma Intl
$459
United Airlines
May 5
SEA8:10 amSeattle/Tacoma Intl
7h 46m
1 stop
MHT6:56 pmManchester
May 6
MHT2:36 pmManchester
12h 23m
2 stops
SEA11:59 pmSeattle/Tacoma Intl
$464
United Airlines
May 5
SEA5:02 amSeattle/Tacoma Intl
10h 54m
2 stops
MHT6:56 pmManchester
May 6
MHT2:36 pmManchester
13h 36m
2 stops
SEA1:12 amSeattle/Tacoma Intl
$470

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 March 12, 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

Cheapest round-trip

SeattleManchester

SEA - MHT

SEAMHT

Seattle/Tacoma Intl

Wed 4/29

11:16 am-10:51 pm

1 stop8h 35m

Manchester

Tue 5/5

6:46 am-2:27 pm

1 stop10h 41m

$359

SeattleManchester

SEA - MHT

SEAMHT

Seattle/Tacoma Intl

Wed 4/29

6:25 pm-8:30 am

2 stops11h 05m

Manchester

Tue 5/5

7:30 am-12:45 pm

1 stop8h 15m

$364

SeattleManchester

SEA - MHT

SEAMHT

Seattle/Tacoma Intl

Wed 4/29

6:25 pm-8:30 am

2 stops11h 05m

Manchester

Tue 5/5

3:45 pm-12:10 am

2 stops11h 25m

$369

SeattleManchester

SEA - MHT

SEAMHT

Seattle/Tacoma Intl

Mon 4/6

10:57 pm-9:57 am

1 stop8h 00m

Manchester

Mon 4/13

5:41 pm-12:36 am

1 stop9h 55m

$379

SeattleManchester

SEA - MHT

SEAMHT

Seattle/Tacoma Intl

Sat 3/28

5:00 am-9:50 pm

1 stop13h 50m

Manchester

Tue 4/14

3:45 pm-12:10 am

2 stops11h 25m

$390

SeattleManchester

SEA - MHT

SEAMHT

Seattle/Tacoma Intl

Mon 4/6

10:57 pm-9:57 am

1 stop8h 00m

Manchester

Mon 4/13

5:41 pm-12:36 am

1 stop9h 55m

$400

SeattleManchester

SEA - MHT

SEAMHT

Seattle/Tacoma Intl

Fri 4/10

11:33 pm-11:42 am

1 stop9h 09m

Manchester

Mon 4/13

5:41 pm-12:36 am

1 stop9h 55m

$408

SeattleManchester

SEA - MHT

SEAMHT

Seattle/Tacoma Intl

Sat 3/28

5:00 am-9:50 pm

1 stop13h 50m

Manchester

Tue 4/14

7:30 am-12:45 pm

1 stop8h 15m

$423
Quickest round-trip

SeattleManchester

SEA - MHT

SEAMHT

Seattle/Tacoma Intl

Thu 8/13

10:50 am-9:25 pm

1 stop7h 35m

Manchester

Sat 8/22

5:50 am-10:45 am

1 stop7h 55m

$437

SeattleManchester

SEA - MHT

SEAMHT

Seattle/Tacoma Intl

Thu 8/13

6:15 am-9:50 pm

2 stops12h 35m

Manchester

Sat 8/22

5:50 am-10:45 am

1 stop7h 55m

$442

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 typical price of a round-trip flight between Seattle and Manchester, New Hampshire?

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 July instead. Flights to Manchester, New Hampshire in July, while not as cheap as those in January, still average around $389.

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 40m

Direct flights

None
The fastest flight from Seattle to Manchester, New Hampshire takes 7h 40m
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 40m 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 $333Free CancellationRating
7.1
11,433 reviews
Search American Airlines flights
SouthwestPriceFrom $377Free CancellationRating
8.0
4,319 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

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