£191 Cheap Flights from Manchester (MHT) to Seattle (SEA)

View £191 flight on Tue, 30 Sep 2025Opens 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 £191 for one-way flights and for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Find the cheapest month to fly from Manchester (MHT) to Seattle (SEA)

August is typically the cheapest month to fly

From £222 - £690 per traveller.

Graph displaying average flight prices per month

Flight from Manchester to Seattle route information
Origin airport
Manchester-Boston Regional
Destination airport
Seattle - Tacoma Intl.
Distance
3922 km

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, 2 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 and range up to .  

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 , 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.  

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 . 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.

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