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$163+ 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 9/13. Fares are subject to change and may not be available on all flights or dates of travel.
MHT — SEA
Aug 5 — Aug 121
Tue 8/5
Tue 8/12
1 adult, Economy
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1. Tell us where you want to go

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Cheapflights Tip: The best prices from Manchester to Seattle/Tacoma Intl are usually found in January or September, booked 12 days in advance, depart on a Wednesday or Thursday and return on a Tuesday

Cheap 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 31, 2025.

Round-trip from

$325
(American Airlines)

One-way from

$163
(American Airlines)

Popular in

July

Cheapest in

January

Average price

$609
From Manchester to Seattle/Tacoma Intl
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One-way flight from Manchester to Seattle/Tacoma Intl
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Highest demand for flights based on searches. 8% potential increase in price ($50 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($9 potential savings vs. average RT price).
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Average for round-trip flights in July 2025
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Find 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 31, 2025.

This American Airlines deal was found by Cheapflights users on 7/31. 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.
Tue 10/217:07 amMHT - SEA
1 stop9h 39mAmerican Airlines
Sat 10/256:10 amSEA - MHT
1 stop10h 19mAmerican Airlines
Deal found 7/31$325
This Southwest deal was found by Cheapflights users on 7/31. 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 9/103:50 pmMHT - SEA
2 stops10h 45mSouthwest
Sat 9/137:35 amSEA - MHT
2 stops11h 50mSouthwest
Deal found 7/31$375
This United Airlines deal was found by Cheapflights users on 7/31. 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.
Tue 9/21:30 pmMHT - SEA
1 stop10h 12mUnited Airlines
Sat 9/610:55 pmSEA - MHT
1 stop8h 47mUnited Airlines
Deal found 7/31$425

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 31, 2025.
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

Tue 10/21

7:07 am-1:46 pm

1 stop9h 39m

Seattle/Tacoma Intl

Sat 10/25

6:10 am-7:29 pm

1 stop10h 19m

$325

ManchesterSeattle

MHT - SEA

MHTSEA

Manchester

Wed 9/10

3:50 pm-11:35 pm

2 stops10h 45m

Seattle/Tacoma Intl

Sat 9/13

7:35 am-10:25 pm

2 stops11h 50m

$375

ManchesterSeattle

MHT - SEA

MHTSEA

Manchester

Tue 9/2

1:30 pm-8:42 pm

1 stop10h 12m

Seattle/Tacoma Intl

Sat 9/6

10:55 pm-10:42 am

1 stop8h 47m

$425

ManchesterSeattle

MHT - SEA

MHTSEA

Manchester

Sat 9/13

12:38 pm-8:09 pm

1 stop10h 31m

$163

ManchesterSeattle

MHT - SEA

MHTSEA

Manchester

Tue 8/26

1:30 pm-8:42 pm

1 stop10h 12m

$213

ManchesterSeattle

MHT - SEA

MHTSEA

Manchester

Tue 10/14

5:00 am-12:35 pm

2 stops10h 35m

$214

ManchesterSeattle

MHT - SEA

MHTSEA

Manchester

Sat 8/16

3:56 pm-9:57 pm

1 stop9h 01m

$309

ManchesterSeattle

MHT - SEA

MHTSEA

Manchester

Wed 8/6

6:44 pm-8:02 am

3 stops40h 18m

$444

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/29

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 July 25, 2025.

To ensure you get the cheapest price possible for a flight from Manchester, New Hampshire to Seattle, you should look to book at least 11 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, January is the cheapest month in which you can book a flight from Manchester, New Hampshire to Seattle (average of $238). Flying from Manchester, New Hampshire to Seattle in June is currently the most expensive (average of $389). 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.

What is the cheapest time of day to fly from MHT to SEA?

Find hourly flight availability from Manchester to Seattle. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated July 31, 2025.

A simple way to save on the total cost of your ticket is to fly from Manchester, New Hampshire to Seattle in the afternoon. If you’re flexible enough to do this you can expect to save up to 25% on your trip compared to booking a flight at noon.

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 31, 2025.
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
10,000 reviews

Overall

8.0

Crew

8.5

Boarding

8.1

Entertainment

7.1

Comfort

7.8

Food

7.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Jul 2025

EUG - SEA

Mobility support was fabulous No flight entertainment that I was aware of.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Overall

8.0

Crew

8.5

Boarding

8.1

Entertainment

7.1

Comfort

7.8

Food

7.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Jul 2025

EUG - SEA

Mobility support was fabulous No flight entertainment that I was aware of.
Southwest
8.0
Very good
4,246 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Overall

8.0

Crew

8.5

Boarding

8.1

Entertainment

7.1

Comfort

7.8

Food

7.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Jul 2025

EUG - SEA

Mobility support was fabulous No flight entertainment that I was aware of.
United Airlines
7.4
Good
8,900 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Overall

8.0

Crew

8.5

Boarding

8.1

Entertainment

7.1

Comfort

7.8

Food

7.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Jul 2025

EUG - SEA

Mobility support was fabulous No flight entertainment that I was aware of.
American Airlines
7.2
Good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Overall

8.0

Crew

8.5

Boarding

8.1

Entertainment

7.1

Comfort

7.8

Food

7.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Jul 2025

EUG - SEA

Mobility support was fabulous No flight entertainment that I was aware of.

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.

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

    Currently priced at $325, 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. Search Cheapflights for deals from Southwest and United Airlines - these airlines can fly you to your destination from $375 and $425, respectively. These flights start at 37% 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 ($163), United Airlines ($213), and Southwest ($224).

  • 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, January is the cheapest month in which you can book a flight from Manchester, New Hampshire to Seattle (average of $238). Flying from Manchester, New Hampshire to Seattle in June is currently the most expensive (average of $389). 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?

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Browse thousands of different options on Cheapflights for your next trip

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Top 3 airlines flying from Manchester to Seattle

Discover the top 3 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 31, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$342Average$422FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$356Average$546FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$381Average$491FlexibilityNo cancel feeOn-time63%

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