£280 Cheap Flights from Manchester (MHT) to Seattle (SEA)

View £280 flight on Wed, 5 Aug 2026Opens in a new window

Popular airlines from Manchester-Boston Regional Airport (MHT) to Seattle-Tacoma International Airport (SEA)

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Cheap Flights from Manchester (MHT) to Seattle (SEA)

Prices were available within the past 7 days and start at £280 for one-way flights and £516 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Alaska Airlines
Wed, 5 Aug - Thu, 13 Aug
MHT
Manchester
SEA
Seattle
£516 Return, found 1 day ago
£516
Return
found 1 day ago
Select Alaska Airlines flight, departing Wed, 5 Aug from Manchester to Seattle, returning Thu, 13 Aug, priced at £516 found 1 day ago
Alaska Airlines
Wed, 5 Aug - Thu, 13 Aug
MHT
Manchester
SEA
Seattle
£560 Return, found 1 day ago
£560
Return
found 1 day ago
Select Alaska Airlines flight, departing Wed, 5 Aug from Manchester to Seattle, returning Thu, 13 Aug, priced at £560 found 1 day ago
Alaska Airlines
Wed, 5 Aug - Thu, 13 Aug
MHT
Manchester
SEA
Seattle
£560 Return, found 1 day ago
£560
Return
found 1 day ago
Select Alaska Airlines flight, departing Wed, 5 Aug from Manchester to Seattle, returning Thu, 13 Aug, priced at £560 found 1 day ago

Frequently asked questions

How much is a flight from Manchester-Boston Regional Airport (MHT) to Seattle - Tacoma Intl. Airport (SEA)?
Within the past 7 days on Expedia, for flights departing within the next year, the lowest price quoted for a round-trip flight between MHT and Sea-Tac Airport was £516. Cheap fares don't hang around forever, so book yours today. Prices and availability are subject to change. Additional terms apply.
Do I need to pay a cancellation fee if I cancel my flight from MHT to Sea-Tac Airport?
The majority of flights can be cancelled online, but whether you are charged a fee all comes down to your airline. If you do need to cancel your escape, follow the easy instructions in the Customer Service Portal.
How do I find cheap flights from MHT to Seattle - Tacoma Intl. Airport (SEA) that have flexible change policies?
Many airlines offer the option to reschedule your flight without a change fee. All you pay is the difference between the original flight and the new flight. When you're searching for Manchester-Boston Regional Airport (MHT) to Sea-Tac Airport flights, you'll see a "no change fees" filter for you to select.
How far is the flight from Manchester-Boston Regional Airport (MHT) to Seattle - Tacoma Intl. Airport (SEA)?
Around 4,000 kilometres separates Londonderry and SeaTac, so pack some in-flight entertainment to keep you occupied for a couple of hours. That thrilling novel you haven't started will be perfect.
Which airlines fly direct from Manchester Airport to Seattle - Tacoma Intl. Airport (SEA)?
Unfortunately, there aren't any airlines that fly direct between Manchester Airport and Sea-Tac Airport. You'll have to book a flight with one or more stops.
Are Manchester-Boston Regional Airport (MHT) to Seattle - Tacoma Intl. Airport (SEA) flight tickets cheaper when they're purchased at the last minute?
Booking your trip from MHT to Seattle - Tacoma Intl. Airport (SEA) at the last minute could save you some serious cash. However, it could end up costing a good deal more! If you'd rather play it safe, book well ahead of your departure date. In fact, Expedia has some of the biggest bargains up to a year in advance. If your preferred air carrier hasn't released tickets yet, check back regularly as deals are updated on Expedia all the time.

Frequently asked questions

What is the cheapest month to fly from Manchester, NH (MHT-Manchester-Boston Regional) to Seattle, WA (SEA-Seattle - Tacoma Intl.)?
January is typically the cheapest month to fly from Manchester, NH (MHT-Manchester-Boston Regional) to Seattle, WA (SEA-Seattle - Tacoma Intl.), with average return fares of approximately £262. This is about 26% lower than the average price throughout the year. January sees lower prices because it falls after the holiday travel rush, when demand drops and airlines compete for bookings. Other cheap months to fly from Manchester, NH (MHT-Manchester-Boston Regional) to Seattle, WA (SEA-Seattle - Tacoma Intl.) include September and November.
How do I find cheap flights from Manchester, NH (MHT-Manchester-Boston Regional) to Seattle, WA (SEA-Seattle - Tacoma Intl.)?
To find a cheap flight from Manchester, NH (MHT-Manchester-Boston Regional) to Seattle, WA (SEA-Seattle - Tacoma Intl.), be flexible with your dates. Traveling outside of peak vacation months and booking a mid-week flight can help you save. Early morning and late night flights are often more affordable, too. Expedia allows you to compare flight times, airlines and routes all in one place to find low fares. You can also set up Price Tracking and receive alerts when fares go up or down.
What is the best time to fly from Manchester, NH (MHT-Manchester-Boston Regional) to Seattle, WA (SEA-Seattle - Tacoma Intl.)?
The best time to fly from Manchester-Boston Regional (MHT) to Seattle - Tacoma Intl. (SEA) for a good deal is typically January or September. You can expect to find return flights for around £262 during these months. These periods often offer a balance of lower prices and good availability, as they fall outside the peak summer travel season.
How many flights per day from Manchester, NH (MHT-Manchester-Boston Regional) to Seattle, WA (SEA-Seattle - Tacoma Intl.)?
There are approximately 17 connecting flights per day from Manchester, NH (MHT) to Seattle, WA (SEA). Some common connection points include Washington Dulles Intl. (IAD), Baltimore Washington Intl. Thurgood Marshall (BWI), and Midway Intl. (MDW).
What is the earliest flight from Manchester, NH (MHT-Manchester-Boston Regional) to Seattle, WA (SEA-Seattle - Tacoma Intl.)?
The earliest flight from Manchester, NH (MHT-Manchester-Boston Regional) (MHT) to Seattle, WA (SEA-Seattle - Tacoma Intl.) (SEA) typically departs at approximately 5:00 AM local time, operated by Southwest Airlines. This is a seasonal service active in October. An early departure like this can help you maximise your time at your destination. To compare early flights on Expedia, select the "Early Morning" and "Morning" filters in your search.
What day of the week has the most flights from Manchester, NH (MHT-Manchester-Boston Regional) to Seattle, WA (SEA-Seattle - Tacoma Intl.)?
You'll typically find the most flights from Manchester-Boston Regional (MHT) to Seattle - Tacoma Intl. (SEA) on a Saturday, with around 14 flights available. This gives you a good selection of options for your travel plans. Major airlines on this route include American Airlines, Southwest Airlines, and United Airlines. Flight schedules are consistent throughout the week, so you'll find plenty of options regardless of the day you choose to fly.
What are the most popular departure times for flights from Manchester, NH (MHT-Manchester-Boston Regional) to Seattle, WA (SEA-Seattle - Tacoma Intl.)?
The most popular departure times for flights from Manchester, NH (MHT-Manchester-Boston Regional) to Seattle, WA (SEA-Seattle - Tacoma Intl.) are in the early morning, from 6am to 9am. Approximately 34% of passengers prefer this time window. Many major carriers, including WN and AA, offer flights during this window. This timing works well because you can get an early start to your travel day and arrive in Seattle with plenty of time to settle in.
How long does it take to fly from Manchester, NH (MHT-Manchester-Boston Regional) to Seattle, WA (SEA-Seattle - Tacoma Intl.)?
Flights from MHT to SEA with one stop typically take around 8 hours 50 minutes, covering approximately 2,452 miles. Keep in mind that actual flight times can vary due to wind patterns, weather, and air traffic.
Can you fly business or first class from Manchester, NH (MHT-Manchester-Boston Regional) to Seattle, WA (SEA-Seattle - Tacoma Intl.)?
Select the "Business class" and "First class" filters when looking for MHT to SEA flights on Expedia. This is the easiest way to compare prices, routes and flight times for your trip.
How do I earn miles on a Manchester, NH (MHT-Manchester-Boston Regional) to Seattle, WA (SEA-Seattle - Tacoma Intl.) flight with Expedia?
It's easy to earn miles on a Manchester, NH (MHT-Manchester-Boston Regional) to Seattle, WA (SEA-Seattle - Tacoma Intl.) flight when you book with Expedia. Before you confirm your booking, simply select your frequent flyer program and enter your program number. As a member of One Key™, you can also earn OneKeyCash™* on top of your airline miles when you book with Expedia. *Excludes taxes and fees. OneKeyCash is not redeemable for cash and can only be used on Expedia and other participating brands.
What airports do you fly into for Seattle from Manchester-Boston Regional (MHT)?
From Manchester-Boston Regional (MHT), you can fly directly into Seattle - Tacoma Intl. (SEA) to reach Seattle. Some flights may connect through major hubs like Baltimore Washington Intl. Thurgood Marshall (BWI), Washington Dulles Intl. (IAD), Midway Intl. (MDW) before reaching Seattle. Compare routes and airports on Expedia to find the best flight options for your travel plans.
Is it cheaper to buy a plane ticket from Manchester, NH (MHT-Manchester-Boston Regional) to Seattle, WA (SEA-Seattle - Tacoma Intl.) at the last minute?
Typically, booking a last minute flight from Manchester, NH (MHT-Manchester-Boston Regional) to Seattle, WA (SEA-Seattle - Tacoma Intl.) will be more expensive than booking in advance. As the departure date approaches, there are usually fewer seats available which can drive up the cost. However, if there's some wiggle room with your travel dates and times, you could bag a cheap last-minute fare.
Is it cheaper to book a Manchester, NH (MHT-Manchester-Boston Regional) to Seattle, WA (SEA-Seattle - Tacoma Intl.) flight and hotel package?
Securing a Manchester, NH (MHT-Manchester-Boston Regional) to Seattle, WA (SEA-Seattle - Tacoma Intl.) flight and hotel package is usually cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your travels all in one place. Select from our extensive range of stays and then add flights, activities and car rentals to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Manchester, NH (MHT-Manchester-Boston Regional) to Seattle, WA (SEA-Seattle - Tacoma Intl.)?
If you booked your Manchester, NH (MHT-Manchester-Boston Regional) to Seattle, WA (SEA-Seattle - Tacoma Intl.) flight within the last 24 hours, you may be able to modify or cancel it without any fees. Depending on the airline and the type of ticket you have, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal if you'd like more information.

Travel information

Origin airport
Manchester-Boston Regional
Destination airport
Seattle - Tacoma Intl.
Airlines serving
Alaska Airlines
Return price
£515
Distance
3922 km

Book with confidence

Compare flights from Manchester to Seattle easily and book with confidence

For travelling on business or for pleasure, Expedia makes it easy to book your flights from Manchester to Seattle. Operating between them flights per day, 4 airlines cover the route. And fly direct, getting you to Seattle - Tacoma Intl. in just hours. If you have a preferred carrier, use our advanced search tool to find the right flight from Manchester-Boston Regional to Seattle - Tacoma Intl..  

To make things even better, in the advanced search, you can also choose to fly economy, premium economy, business or first class, select your maximum number of stops, and pick your preferred departure and arrival time. You can also opt for refundable and direct flights. 

Grab a great deal on your flight from Manchester-Boston Regional (MHT) to Seattle - Tacoma Intl. (SEA)

The easiest way to view the best deals on flights from Manchester to Seattle today is to enter your travel dates and hit search. From here, you can sort your results by price to see the cheapest flights first. Right now, return flights from Manchester-Boston Regional to Seattle - Tacoma Intl. start at just £516 and range up to £560.  

To find an even better deal, try  

  • being flexible on your dates – midweek flights can be cheaper
  • looking for other airports near Manchester and Seattle
  • booking your flight during August, the cheapest month on this route
  • varying your flight times – early morning and late at night are sometimes cheaper 

Why you should book your Manchester to Seattle flight with Expedia!

We cater for all flight types, cabin classes and airlines. So whether you’re booking flights from Manchester-Boston Regional to Seattle - Tacoma Intl. for a budget break or a business trip with a bit of pleasure thrown in, we make it easy to secure the seat that’s right for you.  

Thanks to our supersized inventory that offers great choice all in one place, you know you’ll get a great deal with Expedia. Especially if you bundle your flight together with your hotel, you will unlock amazing savings. For added peace of mind, you can choose flexible bookings or filter to find refundable options, so you won’t pay a fee to change your flight.  

Compare flights from Manchester to Seattle easily and book with confidence

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