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$234+ 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 1/28. Fares are subject to change and may not be available on all flights or dates of travel.
MHT — SEA
Jan 14 — Jan 211
Wed 1/14
Wed 1/21
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 September or November, booked 61 days in advance, depart on a Wednesday or Thursday and return on a Tuesday

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 December 15, 2025.

This Southwest deal was found by Cheapflights users on 12/14. 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 12/258:45 amMHT - SEA
2 stops12h 55mSouthwest
Mon 12/299:55 amSEA - MHT
2 stops10h 05mSouthwest
Deal found 12/14$559
This United Airlines deal was found by Cheapflights users on 12/15. 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.
Mon 12/222:23 pmMHT - SEA
2 stops11h 49mUnited Airlines
Wed 12/318:00 amSEA - MHT
1 stop7h 51mUnited Airlines
Deal found 12/15$699
This American Airlines deal was found by Cheapflights users on 12/15. 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 12/306:00 amMHT - SEA
1 stop9h 37mAmerican Airlines
Sat 1/311:07 pmSEA - MHT
1 stop9h 04mAmerican Airlines
Deal found 12/15$845
This Southwest deal was found by Cheapflights users on 12/14. 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 12/305:40 amMHT - SEA
2 stops12h 35mSouthwest
Fri 1/26:45 amSEA - MHT
1 stop13h 15mSouthwest
Deal found 12/14$883

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 December 15, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$367
(United Airlines)

One-way from

$234
(Alaska Airlines)

Popular in

December

Cheapest in

September

Average price

$796
Provider with most accurate pricing for Manchester-Seattle/Tacoma Intl flight deals.
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Provider most trusted by Cheapflights users for Manchester-Seattle/Tacoma Intl flights.
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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. 8% potential increase in price ($47 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease ($26 potential savings vs. average RT price).
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Average for round-trip flights in December 2025
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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 December 15, 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

Sat 2/14

2:33 pm-8:56 pm

1 stop9h 23m

Seattle/Tacoma Intl

Tue 2/17

8:17 am-6:53 pm

1 stop7h 36m

$367

ManchesterSeattle

MHT - SEA

MHTSEA

Manchester

Thu 2/12

4:11 pm-10:18 pm

1 stop9h 07m

Seattle/Tacoma Intl

Tue 2/17

11:18 pm-11:16 am

1 stop8h 58m

$402

ManchesterSeattle

MHT - SEA

MHTSEA

Manchester

Wed 1/28

4:06 pm-10:07 pm

1 stop9h 01m

Seattle/Tacoma Intl

Sun 2/1

12:45 pm-11:46 pm

1 stop8h 01m

$402

ManchesterSeattle

MHT - SEA

MHTSEA

Manchester

Wed 1/28

5:00 am-1:15 pm

1 stop11h 15m

Seattle/Tacoma Intl

Sun 2/1

5:15 am-9:15 pm

2 stops13h 00m

$407

ManchesterSeattle

MHT - SEA

MHTSEA

Manchester

Wed 2/4

2:17 pm-12:59 am

2 stops13h 42m

Seattle/Tacoma Intl

Sun 2/8

8:10 am-6:51 pm

1 stop7h 41m

$407

ManchesterSeattle

MHT - SEA

MHTSEA

Manchester

Fri 2/13

11:41 am-9:21 pm

2 stops12h 40m

Seattle/Tacoma Intl

Tue 2/17

11:59 pm-3:42 pm

2 stops12h 43m

$412

ManchesterSeattle

MHT - SEA

MHTSEA

Manchester

Mon 1/5

2:23 pm-8:57 pm

1 stop9h 34m

Seattle/Tacoma Intl

Tue 1/13

5:00 am-6:51 pm

2 stops10h 51m

$437

ManchesterSeattle

MHT - SEA

MHTSEA

Manchester

Thu 2/12

4:11 pm-10:18 pm

1 stop9h 07m

Seattle/Tacoma Intl

Sun 2/15

11:18 pm-11:16 am

1 stop8h 58m

$437

ManchesterSeattle

MHT - SEA

MHTSEA

Manchester

Sat 1/17

4:06 pm-10:29 pm

1 stop9h 23m

Seattle/Tacoma Intl

Tue 1/20

9:54 am-10:58 pm

1 stop10h 04m

$441

ManchesterSeattle

MHT - SEA

MHTSEA

Manchester

Thu 3/5

7:20 am-12:40 pm

1 stop8h 20m

Seattle/Tacoma Intl

Sun 3/8

5:30 am-10:00 pm

1 stop13h 30m

$442

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/14

Showing 1-10 of 18 results
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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 December.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
eDreamsPrice 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 eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Manchester, New Hampshire-Seattle flight deals on Cheapflights vs. eDreams >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 eDreams the most. eDreams 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 December 12, 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 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, January is the cheapest month in which you can book a flight from Manchester, New Hampshire to Seattle (average of $98). Flying from Manchester, New Hampshire to Seattle in December is currently the most expensive (average of $197). 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 December 15, 2025.

A simple way to save on the total cost of your ticket is to fly from Manchester, New Hampshire to Seattle in the evening. If you’re flexible enough to do this you can expect to save up to 58% on your trip compared to booking a flight at noon.

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 December 15, 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
11,452 reviews

Overall

8.0

Crew

8.5

Food

7.1

Boarding

8.1

Comfort

7.8

Entertainment

7.0

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
11,452 reviews
Alaska Airlines
8.0
Very good
11,452 reviews

Overall

8.0

Crew

8.5

Food

7.1

Boarding

8.1

Comfort

7.8

Entertainment

7.0

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
7.9
Good
4,249 reviews
Alaska Airlines
8.0
Very good
11,452 reviews

Overall

8.0

Crew

8.5

Food

7.1

Boarding

8.1

Comfort

7.8

Entertainment

7.0

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
9,092 reviews
Alaska Airlines
8.0
Very good
11,452 reviews

Overall

8.0

Crew

8.5

Food

7.1

Boarding

8.1

Comfort

7.8

Entertainment

7.0

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
11,051 reviews
Alaska Airlines
8.0
Very good
11,452 reviews

Overall

8.0

Crew

8.5

Food

7.1

Boarding

8.1

Comfort

7.8

Entertainment

7.0

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 9h 07m. Fly via United Airlines, American 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 $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 33% 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, January is the cheapest month in which you can book a flight from Manchester, New Hampshire to Seattle (average of $98). Flying from Manchester, New Hampshire to Seattle in December is currently the most expensive (average of $197). 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
Edmonds
Lynnwood
Renton
Puyallup
Kirkland
Kent
Tukwila
Cle Elum
Marysville
Leavenworth
Fife
Aberdeen
Shoreline
Centralia
Federal Way

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 December 15, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$342Average$422FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$344Average$544FlexibilityNo cancel feeOn-time71%
Alaska AirlinesCheapest$347Average$787FlexibilityNo cancel feeOn-time75%
SouthwestCheapest$379Average$458FlexibilityNo cancel feeOn-time63%

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