Latest deals
Insights
When to book
FAQs
Reviews
Price Alerts

Cheap flights from Seattle to Boston from $174

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 11/12. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

Discover deals from 900+ travel sites with momondo.

Save money when you book flights with momondo

Big names and deals

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

Find the cheapest flights from Seattle to Boston

Cheap round-trip flights

Enter your travel dates to find the best prices.
United Airlines Logo
8:29 am - 6:53 pmSEA-MHT
7h 24m1 stop
United Airlines Logo
2:33 pm - 8:35 pmMHT-SEA
9h 02m1 stop
$448United Airlines
Find Deal
Fri, Mar 6 - Tue, Mar 10
United Airlines Logo
8:29 am - 6:53 pmSEA-MHT
7h 24m1 stop
United Airlines Logo
2:33 pm - 10:32 pmMHT-SEA
10h 59m2 stops
$453United Airlines
Find Deal
Fri, Mar 6 - Tue, Mar 10
Southwest Logo
6:00 pm - 8:30 amSEA-MHT
11h 30m2 stops
Southwest Logo
2:45 pm - 10:30 pmMHT-SEA
10h 45m2 stops
$467Southwest
Find Deal
Fri, Mar 6 - Tue, Mar 10
Southwest Logo
5:00 am - 9:20 pmSEA-MHT
13h 20m2 stops
Southwest Logo
12:10 pm - 9:35 pmMHT-SEA
12h 25m2 stops
$477Southwest
Find Deal
Fri, Dec 19 - Sat, Dec 20
Southwest Logo
6:45 am - 11:00 pmSEA-MHT
13h 15m1 stop
Southwest Logo
12:10 pm - 9:35 pmMHT-SEA
12h 25m2 stops
$489Southwest
Find Deal
Fri, Dec 19 - Sat, Dec 20
American Airlines Logo
11:06 pm - 11:12 amSEA-MHT
9h 06m1 stop
American Airlines Logo
1:20 pm - 9:53 pmMHT-SEA
11h 33m1 stop
$497American Airlines
Find Deal
Fri, Mar 6 - Tue, Mar 10
American Airlines Logo
11:06 pm - 11:12 amSEA-MHT
9h 06m1 stop
American Airlines Logo
1:20 pm - 11:08 pmMHT-SEA
12h 48m2 stops
$502American Airlines
Find Deal
Fri, Mar 6 - Tue, Mar 10
American Airlines Logo
11:38 pm - 11:55 amSEA-MHT
9h 17m1 stop
American Airlines Logo
4:20 pm - 9:53 pmMHT-SEA
8h 33m1 stop
$537American Airlines
Find Deal
Tue, Mar 10 - Wed, Mar 11
Alaska Airlines Logo
8:00 am - 11:42 pmSEA-MHT
12h 42m2 stops
Alaska Airlines Logo
4:20 pm - 9:44 pmMHT-SEA
8h 24m1 stop
$695Alaska Airlines
Find Deal
Thu, Mar 26 - Tue, Mar 31
Alaska Airlines Logo
8:00 am - 11:34 pmSEA-MHT
12h 34m2 stops
Alaska Airlines Logo
4:10 pm - 9:59 pmMHT-SEA
8h 49m1 stop
$853Alaska Airlines
Find Deal
Tue, Dec 23 - Wed, Dec 31

American Airlines flights from Seattle to Manchester, New Hampshire

Our best American Airlines deals on Seattle to Manchester, New Hampshire flight tickets
American Airlines
Mar 6
SEA11:06 pmSeattle/Tacoma Intl
9h 06m
1 stop
MHT11:12 amManchester
Mar 10
MHT1:20 pmManchester
11h 33m
1 stop
SEA9:53 pmSeattle/Tacoma Intl
$497
Find similar
American Airlines
Mar 6
SEA11:06 pmSeattle/Tacoma Intl
9h 06m
1 stop
MHT11:12 amManchester
Mar 10
MHT1:20 pmManchester
12h 48m
2 stops
SEA11:08 pmSeattle/Tacoma Intl
$502
Find similar
American Airlines
Mar 10
SEA11:38 pmSeattle/Tacoma Intl
9h 17m
1 stop
MHT11:55 amManchester
Mar 11
MHT4:20 pmManchester
8h 33m
1 stop
SEA9:53 pmSeattle/Tacoma Intl
$537
Find similar

United Airlines flights from Seattle to Manchester, New Hampshire

Our best United Airlines deals on Seattle to Manchester, New Hampshire flight tickets
United Airlines
Mar 6
SEA8:29 amSeattle/Tacoma Intl
7h 24m
1 stop
MHT6:53 pmManchester
Mar 10
MHT2:33 pmManchester
9h 02m
1 stop
SEA8:35 pmSeattle/Tacoma Intl
$448
Find similar
United Airlines
Mar 6
SEA8:29 amSeattle/Tacoma Intl
7h 24m
1 stop
MHT6:53 pmManchester
Mar 10
MHT2:33 pmManchester
10h 59m
2 stops
SEA10:32 pmSeattle/Tacoma Intl
$453
Find similar
United Airlines
Mar 6
SEA7:10 pmSeattle/Tacoma Intl
20h 43m
2 stops
MHT6:53 pmManchester
Mar 10
MHT2:33 pmManchester
12h 19m
2 stops
SEA11:52 pmSeattle/Tacoma Intl
$566
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 October 29, 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

Fri 3/6

8:29 am-6:53 pm

1 stop7h 24m

Manchester

Tue 3/10

2:33 pm-8:35 pm

1 stop9h 02m

$448

SeattleManchester

SEA - MHT

SEAMHT

Seattle/Tacoma Intl

Fri 3/6

8:29 am-6:53 pm

1 stop7h 24m

Manchester

Tue 3/10

2:33 pm-10:32 pm

2 stops10h 59m

$453

SeattleManchester

SEA - MHT

SEAMHT

Seattle/Tacoma Intl

Fri 3/6

6:00 pm-8:30 am

2 stops11h 30m

Manchester

Tue 3/10

2:45 pm-10:30 pm

2 stops10h 45m

$467

SeattleManchester

SEA - MHT

SEAMHT

Seattle/Tacoma Intl

Fri 12/19

5:00 am-9:20 pm

2 stops13h 20m

Manchester

Sat 12/20

12:10 pm-9:35 pm

2 stops12h 25m

$477

SeattleManchester

SEA - MHT

SEAMHT

Seattle/Tacoma Intl

Fri 12/19

6:45 am-11:00 pm

1 stop13h 15m

Manchester

Sat 12/20

12:10 pm-9:35 pm

2 stops12h 25m

$489

SeattleManchester

SEA - MHT

SEAMHT

Seattle/Tacoma Intl

Fri 3/6

11:06 pm-11:12 am

1 stop9h 06m

Manchester

Tue 3/10

1:20 pm-9:53 pm

1 stop11h 33m

$497

SeattleManchester

SEA - MHT

SEAMHT

Seattle/Tacoma Intl

Fri 3/6

11:06 pm-11:12 am

1 stop9h 06m

Manchester

Tue 3/10

1:20 pm-11:08 pm

2 stops12h 48m

$502

SeattleManchester

SEA - MHT

SEAMHT

Seattle/Tacoma Intl

Tue 3/10

11:38 pm-11:55 am

1 stop9h 17m

Manchester

Wed 3/11

4:20 pm-9:53 pm

1 stop8h 33m

$537

SeattleManchester

SEA - MHT

SEAMHT

Seattle/Tacoma Intl

Thu 3/26

8:00 am-11:42 pm

2 stops12h 42m

Manchester

Tue 3/31

4:20 pm-9:44 pm

1 stop8h 24m

$695

SeattleManchester

SEA - MHT

SEAMHT

Seattle/Tacoma Intl

Tue 12/23

8:00 am-11:34 pm

2 stops12h 34m

Manchester

Wed 12/31

4:10 pm-9:59 pm

1 stop8h 49m

$853

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

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.

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.
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 24m 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
8,999 reviews
Search United Airlines flights
American AirlinesPriceFrom $333Free CancellationRating
7.2
11,032 reviews
Search American Airlines flights
SouthwestPriceFrom $377Free CancellationRating
8.0
4,241 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.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Fri 11/28
Fri 12/5
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to the United States