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$240+ 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 3/22. Fares are subject to change and may not be available on all flights or dates of travel.
MHT — SEA
Mar 10 — Mar 171
Tue 3/10
Tue 3/17
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 February 8, 2026.

This United Airlines deal was found by Cheapflights users on 2/8. 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.
Wed 5/62:36 pm
MHT
-
SEA
1 stop9h 17m
United Airlines
Tue 5/128:00 am
SEA
-
MHT
1 stop7h 56m
United Airlines
Deal found 2/8$367
This Southwest deal was found by Cheapflights users on 2/8. 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.
Wed 5/67:30 am
MHT
-
SEA
2 stops13h 15m
Southwest
Tue 5/126:25 pm
SEA
-
MHT
2 stops10h 40m
Southwest
Deal found 2/8$369
This American Airlines deal was found by Cheapflights users on 2/5. 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.
Wed 4/226:46 am
MHT
-
SEA
1 stop8h 43m
American Airlines
Mon 4/2710:47 pm
SEA
-
MHT
1 stop8h 10m
American Airlines
Deal found 2/5$372
This American Airlines deal was found by Cheapflights users on 2/7. 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.
Thu 5/145:41 pm
MHT
-
SEA
1 stop10h 10m
American Airlines
Sat 5/236:00 am
SEA
-
MHT
1 stop14h 59m
American Airlines
Deal found 2/7$382
This Southwest deal was found by Cheapflights users on 2/8. 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.
Thu 3/197:20 am
MHT
-
SEA
1 stop8h 20m
Southwest
Mon 3/235:15 am
SEA
-
MHT
1 stop13h 50m
Southwest
Deal found 2/8$390
This Southwest deal was found by Cheapflights users on 2/7. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/273:15 pm
MHT
-
SEA
2 stops11h 50m
Southwest
Sat 5/26:55 pm
SEA
-
MHT
2 stops10h 10m
Southwest
Deal found 2/7$395
This Southwest deal was found by Cheapflights users on 2/7. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/147:10 pm
MHT
-
SEA
1 stop7h 55m
Southwest
Sat 5/2311:55 pm
SEA
-
MHT
2 stops9h 30m
Southwest
Deal found 2/7$416
This American Airlines deal was found by Cheapflights users on 2/5. 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 4/116:00 am
MHT
-
SEA
1 stop8h 34m
American Airlines
Wed 4/1511:16 am
SEA
-
MHT
1 stop8h 35m
American Airlines
Deal found 2/5$428
This United Airlines deal was found by Cheapflights users on 2/4. 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 2/282:33 pm
MHT
-
SEA
1 stop9h 23m
United Airlines
Thu 3/58:00 am
SEA
-
MHT
1 stop7h 53m
United Airlines
Deal found 2/4$432

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 February 8, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$367
(United Airlines)

One-way from

$240
(Southwest)

Popular in

December

Cheapest in

September

Average price

$462
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. 7% potential increase in price ($37 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($21 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in February 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 February 8, 2026.
Use the filters below to find and compare flights from Manchester to Seattle that are best for you.

Fly from

Manchester

Fly to

Seattle

Route

Depart

Return

Price

ManchesterSeattle

MHT - SEA

MHTSEA

Manchester

Wed 5/6

2:36 pm-8:53 pm

1 stop9h 17m

Seattle/Tacoma Intl

Tue 5/12

8:00 am-6:56 pm

1 stop7h 56m

$367

ManchesterSeattle

MHT - SEA

MHTSEA

Manchester

Wed 5/6

7:30 am-5:45 pm

2 stops13h 15m

Seattle/Tacoma Intl

Tue 5/12

6:25 pm-8:05 am

2 stops10h 40m

$369

ManchesterSeattle

MHT - SEA

MHTSEA

Manchester

Wed 4/22

6:46 am-12:29 pm

1 stop8h 43m

Seattle/Tacoma Intl

Mon 4/27

10:47 pm-9:57 am

1 stop8h 10m

$372

ManchesterSeattle

MHT - SEA

MHTSEA

Manchester

Mon 4/27

7:10 pm-12:05 am

1 stop7h 55m

Seattle/Tacoma Intl

Sat 5/2

6:55 pm-8:05 am

2 stops10h 10m

$390

ManchesterSeattle

MHT - SEA

MHTSEA

Manchester

Thu 3/19

7:20 am-12:40 pm

1 stop8h 20m

Seattle/Tacoma Intl

Mon 3/23

11:55 pm-2:00 pm

2 stops11h 05m

$390

ManchesterSeattle

MHT - SEA

MHTSEA

Manchester

Sat 2/28

2:33 pm-8:56 pm

1 stop9h 23m

Seattle/Tacoma Intl

Thu 3/5

8:00 am-6:53 pm

1 stop7h 53m

$432

ManchesterSeattle

MHT - SEA

MHTSEA

Manchester

Sun 3/22

1:40 pm-12:20 am

2 stops13h 40m

$240

ManchesterSeattle

MHT - SEA

MHTSEA

Manchester

Fri 2/20

6:00 am-12:51 pm

1 stop9h 51m

$279

ManchesterSeattle

MHT - SEA

MHTSEA

Manchester

Fri 2/20

2:00 pm-12:55 am

2 stops13h 55m

$284

ManchesterSeattle

MHT - SEA

MHTSEA

Manchester

Fri 2/27

4:12 pm-9:57 pm

1 stop8h 45m

$299

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/6

Showing 1-10 of 14 results
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 February.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
PricelinePrice Accuracy1 starTrust 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

How far ahead should I book a flight from Manchester, New Hampshire to Seattle?

Use this chart to determine the optimal time to book a round-trip flight from Manchester to Seattle. Price data was last updated on February 6, 2026.

To ensure you get the cheapest price possible for a flight from Manchester, New Hampshire to Seattle, you should look to book at least 61 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

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

Currently, March is the cheapest month in which you can book a flight from Manchester, New Hampshire to Seattle (average of $118). Flying from Manchester, New Hampshire to Seattle in January is currently the most expensive (average of $247). 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.

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 February 8, 2026.
See what other customers who have flown with Alaska Airlines, Southwest, and United 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.
Alaska Airlines
8.0
Very good
11,865 reviews

Crew

8.5

Entertainment

7.0

Comfort

7.8

Boarding

8.1

Food

7.1

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Dec 2025

SJC - SEA

The flight was great. Don’t have to make it better. Everything was OK.
Alaska Airlines
8.0
Very good
11,865 reviews
Alaska Airlines
8.0
Very good
11,865 reviews

Crew

8.5

Entertainment

7.0

Comfort

7.8

Boarding

8.1

Food

7.1

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Dec 2025

SJC - SEA

The flight was great. Don’t have to make it better. Everything was OK.
Southwest
8.0
Very good
4,281 reviews
Alaska Airlines
8.0
Very good
11,865 reviews

Crew

8.5

Entertainment

7.0

Comfort

7.8

Boarding

8.1

Food

7.1

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Dec 2025

SJC - SEA

The flight was great. Don’t have to make it better. Everything was OK.
United Airlines
7.4
Good
9,259 reviews
Alaska Airlines
8.0
Very good
11,865 reviews

Crew

8.5

Entertainment

7.0

Comfort

7.8

Boarding

8.1

Food

7.1

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Dec 2025

SJC - SEA

The flight was great. Don’t have to make it better. Everything was OK.
American Airlines
7.2
Good
11,255 reviews
Alaska Airlines
8.0
Very good
11,865 reviews

Crew

8.5

Entertainment

7.0

Comfort

7.8

Boarding

8.1

Food

7.1

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Dec 2025

SJC - SEA

The flight was great. Don’t have to make it better. Everything was OK.

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 43m. Fly via United Airlines, Southwest, or American Airlines 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 $342, United Airlines will fly you from Manchester, New Hampshire to Seattle and back. In addition to United Airlines, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from American Airlines and Alaska Airlines - these airlines can fly you to your destination from $344 and $347, respectively. These flights start at 31% lower than the current average price 3 months from now.

  • What are the cheapest airlines to fly from Manchester, New Hampshire to Seattle one-way?

    The cheapest airlines for a one-way flight from Manchester, New Hampshire to Seattle are American Airlines ($162), Southwest ($168), and United Airlines ($171).

  • 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, March is the cheapest month in which you can book a flight from Manchester, New Hampshire to Seattle (average of $118). Flying from Manchester, New Hampshire to Seattle in January is currently the most expensive (average of $247). 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
Tacoma
SeaTac
Lakewood
Ocean Shores
Olympia
Lynnwood
Edmonds
Lacey
Renton
Puyallup
Kirkland
Kent
Tukwila
Fife
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Shoreline
Marysville
Centralia
Federal Way
Chehalis

Browse thousands of different options on Cheapflights for your next trip

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Top 4 airlines flying from Manchester to Seattle

Discover the top 4 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 February 8, 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$342Average$416FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$344Average$513FlexibilityNo cancel feeOn-time71%
Alaska AirlinesCheapest$347Average$796FlexibilityNo cancel feeOn-time75%
SouthwestCheapest$379Average$458FlexibilityNo cancel feeOn-time63%

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