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 11m. Fly via American Airlines or United 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 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).

In terms of precipitation, rainfall in Seattle ranges from 0.7 - 6.6 inches per month. November is typically the wettest month, when rainfall can reach 6.6 in. July is typically the driest time to visit Seattle when rainfall is around 0.7 in.

If weather is an important factor for your trip to Seattle, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 66.2 F. Travelers looking to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 41.0 F).

What are the most popular airlines that fly from Manchester, New Hampshire to Seattle?

When booking a flight from Manchester, New Hampshire to Seattle, you may want to consider flying on American Airlines, Southwest or United Airlines as they are the most popular for this route.

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.

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.

$193+ Flights from Manchester, NH to Seattle

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Find cheap flights from Manchester to Seattle with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

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 10, 2025.

Mon 12/225:40 amMHT - SEA

2 stops12h 35mSouthwest

Sat 12/277:55 amSEA - MHT

1 stop13h 25mSouthwest

Deal found 12/8

$658

Mon 12/152:32 pmMHT - SEA

1 stop9h 22mUnited Airlines

Thu 12/258:00 amSEA - MHT

1 stop7h 51mUnited Airlines

Deal found 12/8

$694

Mon 12/222:23 pmMHT - SEA

1 stop9h 34mUnited Airlines

Wed 12/315:02 amSEA - MHT

2 stops10h 49mUnited Airlines

Deal found 12/8

$703

Sat 12/132:32 pmMHT - SEA

1 stop9h 22mUnited Airlines

Thu 12/258:00 amSEA - MHT

1 stop7h 51mUnited Airlines

Deal found 12/8

$774

Best flights from Manchester to Seattle
Discover carefully curated flight deals from Manchester to Seattle that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated December 10, 2025.

Wed 2/184:07 pmMHT - SEA

1 stop9h 11mAmerican Airlines

Sat 2/2111:18 pmSEA - MHT

1 stop8h 58mAmerican Airlines

Deal found 12/9

$354

Fri 1/162:17 pmMHT - SEA

1 stop9h 40mUnited Airlines

Tue 1/208:10 amSEA - MHT

1 stop7h 41mUnited Airlines

Deal found 12/9

$369

Fri 2/134:11 pmMHT - SEA

1 stop9h 07mAmerican Airlines

Wed 2/1811:18 pmSEA - MHT

1 stop8h 58mAmerican Airlines

Deal found 12/9

$369

Mon 1/262:17 pmMHT - SEA

2 stops11h 26mUnited Airlines

Tue 1/278:10 amSEA - MHT

1 stop7h 41mUnited Airlines

Deal found 12/8

$381

Fri 1/164:06 pmMHT - SEA

1 stop9h 01mAmerican Airlines

Tue 1/208:04 amSEA - MHT

2 stops12h 46mAmerican Airlines

Deal found 12/9

$374

Last-minute flights from Manchester to Seattle
Discover last-minute flight deals from Manchester to Seattle. Data last updated December 10, 2025 and is based on user searches.

Fri 1/162:17 pmMHT - SEA

1 stop9h 40mUnited Airlines

Tue 1/208:10 amSEA - MHT

1 stop7h 41mUnited Airlines

Deal found 12/9

$369

Fri 1/1611:42 amMHT - SEA

2 stops13h 38mAmerican Airlines

Tue 1/208:04 amSEA - MHT

2 stops11h 54mAmerican Airlines

Deal found 12/9

$379

Fri 1/231:48 pmMHT - SEA

1 stop9h 57mAmerican Airlines

Wed 1/2812:45 pmSEA - MHT

1 stop8h 01mAmerican Airlines

Deal found 12/8

$402

Fri 1/235:00 amMHT - SEA

1 stop11h 15mSouthwest

Wed 1/286:45 amSEA - MHT

1 stop10h 50mSouthwest

Deal found 12/8

$407

Mon 1/262:17 pmMHT - SEA

1 stop9h 40mUnited Airlines

Tue 1/278:10 amSEA - MHT

1 stop7h 41mUnited Airlines

Deal found 12/8

$376

Mon 1/262:17 pmMHT - SEA

1 stop9h 40mUnited Airlines

Fri 1/308:10 amSEA - MHT

1 stop7h 41mUnited Airlines

Deal found 12/9

$411

Mon 1/265:00 amMHT - SEA

1 stop11h 15mSouthwest

Fri 1/306:25 amSEA - MHT

2 stops12h 40mSouthwest

Deal found 12/9

$416

One-way flights from Manchester to Seattle
Search for one-way flight options from Manchester to Seattle. Find affordable one-way fares based on user searches. Data last updated December 10, 2025.

Mon 1/262:17 pmMHT - SEA

1 stop9h 40mUnited Airlines

Deal found 12/9

$193

Wed 1/72:17 pmMHT - SEA

1 stop9h 40mUnited Airlines

Deal found 12/9

$234

Sat 1/1012:15 pmMHT - SEA

2 stops13h 05mAmerican Airlines

Deal found 12/9

$239

Thu 1/84:06 pmMHT - SEA

1 stop9h 01mAmerican Airlines

Deal found 12/9

$243

Wed 1/74:06 pmMHT - SEA

1 stop9h 23mAlaska Airlines

Deal found 12/8

$266

Fri 1/94:06 pmMHT - SEA

1 stop9h 23mAlaska Airlines

Deal found 12/9

$269

Fri 1/95:30 amMHT - SEA

2 stops15h 15mAmerican Airlines

Deal found 12/9

$274

Tue 1/64:06 pmMHT - SEA

1 stop9h 01mAmerican Airlines

Deal found 12/9

$283

Wed 12/177:36 pmMHT - SEA

2 stops41h 35mMultiple Airlines

Deal found 12/10

$287

Find flight deals from Manchester to Seattle

Most accurate provider	eDreams 3 stars
Most trusted provider	eDreams 3 stars
Round-trip from	$354 (American Airlines)
One-way from	$193 (United Airlines)
Popular in	December
Cheapest in	September
Average price	$796

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. 8% potential increase in price ($45 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 5% potential price decrease ($26 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in December 2025

Search Deals

Cheapflights Fare Finder

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

ManchesterSeattle

MHT - SEA

MHTSEA

Manchester

Wed 2/18

4:07 pm-10:18 pm

1 stop9h 11m

Seattle/Tacoma Intl

Sat 2/21

11:18 pm-11:16 am

1 stop8h 58m

$354

ManchesterSeattle

MHT - SEA

MHTSEA

Manchester

Fri 1/16

2:17 pm-8:57 pm

1 stop9h 40m

Seattle/Tacoma Intl

Tue 1/20

8:10 am-6:51 pm

1 stop7h 41m

$369

ManchesterSeattle

MHT - SEA

MHTSEA

Manchester

Fri 2/13

4:11 pm-10:18 pm

1 stop9h 07m

Seattle/Tacoma Intl

Wed 2/18

11:18 pm-11:16 am

1 stop8h 58m

$369

ManchesterSeattle

MHT - SEA

MHTSEA

Manchester

Fri 1/16

4:06 pm-10:07 pm

1 stop9h 01m

Seattle/Tacoma Intl

Tue 1/20

8:04 am-11:50 pm

2 stops12h 46m

$374

ManchesterSeattle

MHT - SEA

MHTSEA

Manchester

Mon 1/26

2:17 pm-10:43 pm

2 stops11h 26m

Seattle/Tacoma Intl

Tue 1/27

8:10 am-6:51 pm

1 stop7h 41m

$381

ManchesterSeattle

MHT - SEA

MHTSEA

Manchester

Mon 1/26

4:06 pm-10:07 pm

1 stop9h 01m

$193

ManchesterSeattle

MHT - SEA

MHTSEA

Manchester

Mon 1/26

2:17 pm-8:57 pm

1 stop9h 40m

$193

ManchesterSeattle

MHT - SEA

MHTSEA

Manchester

Wed 1/7

2:17 pm-8:57 pm

1 stop9h 40m

$234

ManchesterSeattle

MHT - SEA

MHTSEA

Manchester

Sat 1/10

12:15 pm-10:20 pm

2 stops13h 05m

$239

ManchesterSeattle

MHT - SEA

MHTSEA

Manchester

Thu 1/8

4:06 pm-10:07 pm

1 stop9h 01m

$243

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/9

Showing 1-10 of 15 results

Compare providers for flights from Manchester to Seattle

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.

Provider	Price Accuracy	Trust Score*
Expedia	Price Accuracy2 stars	Trust Score*3 stars
FlightHub	Price Accuracy3 stars	Trust Score*1 star
eDreams	Price Accuracy3 stars	Trust Score*3 stars
Priceline	Price Accuracy1 star	Trust 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?

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 $192). 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?

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.

Reviews of airlines servicing Seattle

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

11,427 reviews

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

11,427 reviews

Alaska Airlines

8.0

Very good

11,427 reviews

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

4,252 reviews

Alaska Airlines

8.0

Very good

11,427 reviews

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

9,095 reviews

Alaska Airlines

8.0

Very good

11,427 reviews

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

11,048 reviews

Alaska Airlines

8.0

Very good

11,427 reviews

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

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 11m. Fly via American Airlines or United 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 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 $192). 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.

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Other flights to Seattle

Top 4 airlines flying from Manchester to Seattle

Airline	Cheapest	Average	Flexibility	On-time
United Airlines	Cheapest$342	Average$422	FlexibilityNo cancel fee	On-time69%
American Airlines	Cheapest$344	Average$548	FlexibilityNo cancel fee	On-time71%
Alaska Airlines	Cheapest$347	Average$787	FlexibilityNo cancel fee	On-time75%
Southwest	Cheapest$379	Average$463	FlexibilityNo cancel fee	On-time63%

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$193+ 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 1/26. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Manchester to Seattle with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

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 SeattleExplore 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 10, 2025.

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 10, 2025.

Find flight deals from Manchester to Seattle

Most accurate provider

Most trusted provider

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Cheapflights Fare Finder

Use the filters below to find and compare flights from Manchester to Seattle that are best for you.

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.

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.

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?

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

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

Reviews of airlines servicing Seattle

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.

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?

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

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

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

How can I find direct flights from Manchester to Seattle?

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

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

Traveling to a place near Seattle?

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Manchester to Seattle

See prices for flight routes from nearby airports that may be better suited for you.

Top 4 airlines flying from Manchester to Seattle

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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 10, 2025.