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$148+ Cheap flights from Manchester, NH to Seattle (MHT - SEA)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 8/22. Fares are subject to change and may not be available on all flights or dates of travel.
MHT — SEA
Aug 11 — Aug 181
Tue 8/11
Tue 8/18
1 adult, Economy
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Cheap flight deals from Manchester to Seattle

Cheapest flights from Manchester to Seattle
Explore the most affordable flight options available from Manchester to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 12, 2026.

This Southwest deal was found by Cheapflights users on 7/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/65:50 pm
MHT
-
SEA
1 stop8h 35m
Southwest
Fri 10/912:10 am
SEA
-
MHT
1 stop8h 15m
Southwest
Deal found 7/8$294
This United Airlines deal was found by Cheapflights users on 7/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/52:46 pm
MHT
-
SEA
1 stop8h 59m
United Airlines
Sat 9/1211:00 pm
SEA
-
MHT
2 stops12h 08m
United Airlines
Deal found 7/7$298
This Southwest deal was found by Cheapflights users on 7/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/156:15 pm
MHT
-
SEA
1 stop8h 20m
Southwest
Mon 10/58:05 am
SEA
-
MHT
2 stops12h 50m
Southwest
Deal found 7/8$299
This American Airlines deal was found by Cheapflights users on 7/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/54:30 pm
MHT
-
SEA
1 stop9h 26m
American Airlines
Sat 9/126:18 am
SEA
-
MHT
1 stop8h 00m
American Airlines
Deal found 7/7$304
This Southwest deal was found by Cheapflights users on 7/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/141:50 pm
MHT
-
SEA
2 stops12h 35m
Southwest
Mon 10/196:50 pm
SEA
-
MHT
2 stops10h 20m
Southwest
Deal found 7/9$305
This United Airlines deal was found by Cheapflights users on 7/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/272:46 pm
MHT
-
SEA
2 stops11h 18m
United Airlines
Mon 8/3111:00 pm
SEA
-
MHT
2 stops12h 08m
United Airlines
Deal found 7/8$323
This American Airlines deal was found by Cheapflights users on 7/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/1212:10 pm
MHT
-
SEA
1 stop11h 46m
American Airlines
Wed 12/1610:58 pm
SEA
-
MHT
1 stop9h 13m
American Airlines
Deal found 7/7$330
This United Airlines deal was found by Cheapflights users on 7/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/242:50 pm
MHT
-
SEA
2 stops11h 06m
United Airlines
Mon 10/510:58 pm
SEA
-
MHT
2 stops12h 17m
United Airlines
Deal found 7/8$331
This Southwest deal was found by Cheapflights users on 7/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/106:25 pm
MHT
-
SEA
1 stop8h 30m
Southwest
Fri 9/1811:05 pm
SEA
-
MHT
1 stop9h 10m
Southwest
Deal found 7/10$335

Find flight deals from Manchester to Seattle

Discover tips and strategies to find the most affordable flight options for your journey from Manchester (MHT) to Seattle (SEA). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated July 12, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$294
(Southwest)

One-way from

$148
(American Airlines)

Popular in

December

Cheapest in

September

Average price

$580
Provider with most accurate pricing for Manchester-Seattle/Tacoma Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for Manchester-Seattle/Tacoma Intl flights.
Search Deals
From Manchester to Seattle/Tacoma Intl
Search Deals
One-way flight from Manchester to Seattle/Tacoma Intl
Search Deals
Highest demand for flights based on searches. 4% potential increase in price ($25 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($23 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in July 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Manchester to Seattle 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, Cheapflights users made 2,558,603 searches. Data last updated July 12, 2026.
Use the filters below to find and compare flights from Manchester to Seattle that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

ManchesterSeattle

MHT - SEA

MHTSEA

Manchester

Sat 9/5

2:46 pm-8:45 pm

1 stop8h 59m

Seattle/Tacoma Intl

Sat 9/12

11:00 pm-2:08 pm

2 stops12h 08m

$298

ManchesterSeattle

MHT - SEA

MHTSEA

Manchester

Tue 9/1

3:05 pm-11:25 pm

2 stops11h 20m

Seattle/Tacoma Intl

Thu 9/10

5:15 am-9:25 pm

1 stop13h 10m

$366

ManchesterSeattle

MHT - SEA

MHTSEA

Manchester

Tue 9/8

6:15 pm-11:35 pm

1 stop8h 20m

Seattle/Tacoma Intl

Tue 9/15

7:10 am-9:50 pm

2 stops11h 40m

$373

ManchesterSeattle

MHT - SEA

MHTSEA

Manchester

Sun 8/30

9:25 am-4:06 pm

1 stop9h 41m

Seattle/Tacoma Intl

Tue 9/1

11:00 pm-2:08 pm

2 stops12h 08m

$380

ManchesterSeattle

MHT - SEA

MHTSEA

Manchester

Sat 12/12

7:45 am-4:05 pm

2 stops11h 20m

Seattle/Tacoma Intl

Wed 12/16

11:20 am-9:20 pm

1 stop7h 00m

$381
Quickest round-trip

ManchesterSeattle

MHT - SEA

MHTSEA

Manchester

Tue 9/29

9:25 am-3:51 pm

1 stop9h 26m

Seattle/Tacoma Intl

Wed 9/30

8:10 am-7:01 pm

1 stop7h 51m

$446

ManchesterSeattle

MHT - SEA

MHTSEA

Manchester

Wed 8/19

3:05 pm-11:25 pm

2 stops11h 20m

Seattle/Tacoma Intl

Tue 8/25

6:40 am-9:10 pm

2 stops11h 30m

$467

ManchesterSeattle

MHT - SEA

MHTSEA

Manchester

Thu 8/20

6:25 pm-11:55 pm

1 stop8h 30m

Seattle/Tacoma Intl

Sun 8/23

7:20 pm-9:40 am

2 stops11h 20m

$471
Cheapest one-way
Quickest one-way

ManchesterSeattle

MHT - SEA

MHTSEA

Manchester

Thu 8/6

5:41 pm-11:35 pm

1 stop8h 54m

$172

ManchesterSeattle

MHT - SEA

MHTSEA

Manchester

Tue 8/11

3:05 pm-11:25 pm

2 stops11h 20m

$234

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/8

Showing 1-10 of 17 resultsSorted by cheapest first
1
2

Compare providers for flights from Manchester to Seattle

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Manchester to Seattle in July.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Manchester, New Hampshire-Seattle flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Manchester, New Hampshire-Seattle flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Manchester, New Hampshire-Seattle flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Manchester, New Hampshire-Seattle flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Manchester, New Hampshire-Seattle flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Manchester to Seattle

Have a flexible travel schedule? Discover the best time to fly to Seattle from Manchester with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Manchester to Seattle

What is the cheapest month to book a flight from Manchester, New Hampshire to Seattle?

Currently, September is the cheapest month in which you can book a flight from Manchester, New Hampshire to Seattle (average of $446). Flying from Manchester, New Hampshire to Seattle in December is currently the most expensive (average of $796). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

How much does it cost to fly round-trip from Manchester, New Hampshire to Seattle?

Reviews of airlines servicing Seattle

Get insights into the airlines that provide service to Seattle. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Seattle. Reviews last updated July 12, 2026.
See what other customers who have flown with Southwest and American Airlines from Manchester to Seattle have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
7.9
Good
4,248 reviews

Boarding

8.1

Overall

7.9

Comfort

8.0

Entertainment

7.5

Food

7.0

Crew

8.6

Reviews

1 / 20
8.0
Excellent

Libby,Jun 2026

TUS - LAS

One delay in a 2 layover flight=a good trip. The crew was great.
Southwest
7.9
Good
4,248 reviews
Southwest
7.9
Good
4,248 reviews

Boarding

8.1

Overall

7.9

Comfort

8.0

Entertainment

7.5

Food

7.0

Crew

8.6

Reviews

1 / 20
8.0
Excellent

Libby,Jun 2026

TUS - LAS

One delay in a 2 layover flight=a good trip. The crew was great.
American Airlines
7.1
Good
11,805 reviews
Southwest
7.9
Good
4,248 reviews

Boarding

8.1

Overall

7.9

Comfort

8.0

Entertainment

7.5

Food

7.0

Crew

8.6

Reviews

1 / 20
8.0
Excellent

Libby,Jun 2026

TUS - LAS

One delay in a 2 layover flight=a good trip. The crew was great.

Related info for your journey

Find useful and relevant information for your journey from Manchester to Seattle. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Manchester, New Hampshire to Seattle?

    There are many flights that can get you from Manchester, New Hampshire to Seattle in 8h 59m. Fly via United Airlines or Southwest to get the fastest option. The distance from Manchester, New Hampshire to Seattle is about 2451 mi. This flight may include one or multiple stops.

  • What are the cheapest airlines flying from Manchester, New Hampshire to Seattle round-trip?

    Currently priced at $326, American Airlines will fly you from Manchester, New Hampshire to Seattle and back. In addition to American Airlines, many other airlines offer competitively priced options for your trip. Check Cheapflights for deals on Southwest for as low as $379. These flights start at 40% lower than the current average price 3 months from now.

  • Can I find deals for flights from Manchester to Seattle that include hotel bookings?

    Yes. In addition to deals on Manchester to Seattle flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Manchester to Seattle?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Manchester to Seattle.

  • Can I find deals for business class flights from Manchester to Seattle?

    Yes. Cheapflights offers flight deals from Manchester to Seattle by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Manchester, New Hampshire to Seattle?

    Currently, September is the cheapest month in which you can book a flight from Manchester, New Hampshire to Seattle (average of $446). Flying from Manchester, New Hampshire to Seattle in December is currently the most expensive (average of $796). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near Seattle?

Book flights to Seattle if you plan to visit one of these locations
SeaTac
Tacoma
Lacey
Leavenworth
Olympia
Ocean Shores
Edmonds
Snoqualmie
Tumwater
Tukwila
Renton
Kent
Lynnwood
Ellensburg
Fife
Marysville
Lakewood
Issaquah
Shoreline
Centralia

Browse thousands of different options on Cheapflights for your next trip

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Top 2 airlines flying from Manchester to Seattle

Discover the top 2 airlines that operate flights from Manchester to Seattle. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated July 12, 2026.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$326Average$545FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$379Average$505FlexibilityNo cancel feeOn-time63%

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