Cheap Flights from London to Seattle

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Flight deals from London to Seattle

Looking for a cheap last-minute deal or the best return flight from London to Seattle? If you want to travel next month, return fares start from Rs163,488. Find the lowest prices on one-way and return tickets right here.

Seattle.Rs92,977 per passenger.Departing Wed, 26 Aug.One-way flight with Ryanair.Outbound indirect flight with Ryanair, departs from London Luton on Wed, 26 Aug, arriving in Seattle / Tacoma International.Price includes taxes and charges.From Rs92,977, select.

Seattle.Rs104,506 per passenger.Departing Wed, 23 Sep.One-way flight with Wizz Air UK.Outbound indirect flight with Wizz Air UK, departs from London Luton on Wed, 23 Sep, arriving in Seattle / Tacoma International.Price includes taxes and charges.From Rs104,506, select.

Seattle.Rs117,563 per passenger.Departing Mon, 28 Dec.One-way flight with Icelandair.Outbound indirect flight with Icelandair, departs from London Gatwick on Mon, 28 Dec, arriving in Seattle / Tacoma International.Price includes taxes and charges.From Rs117,563, select.

Seattle.Rs117,563 per passenger.Departing Tue, 13 Oct.One-way flight with Icelandair.Outbound indirect flight with Icelandair, departs from London Gatwick on Tue, 13 Oct, arriving in Seattle / Tacoma International.Price includes taxes and charges.From Rs117,563, select.

Seattle.Rs118,939 per passenger.Departing Mon, 10 May.One-way flight with Ryanair.Outbound indirect flight with Ryanair, departs from London Stansted on Mon, 10 May, arriving in Seattle / Tacoma International.Price includes taxes and charges.From Rs118,939, select.

Seattle.Rs120,090 per passenger.Departing Mon, 25 Jan.One-way flight with Icelandair.Outbound indirect flight with Icelandair, departs from London Gatwick on Mon, 25 Jan, arriving in Seattle / Tacoma International.Price includes taxes and charges.From Rs120,090, select.

Seattle.Rs120,090 per passenger.Departing Mon, 1 Mar.One-way flight with Icelandair.Outbound indirect flight with Icelandair, departs from London Gatwick on Mon, 1 Mar, arriving in Seattle / Tacoma International.Price includes taxes and charges.From Rs120,090, select.

Seattle.Rs120,163 per passenger.Departing Wed, 4 Nov.One-way flight with Icelandair.Outbound indirect flight with Icelandair, departs from London Gatwick on Wed, 4 Nov, arriving in Seattle / Tacoma International.Price includes taxes and charges.From Rs120,163, select.

Seattle.Rs120,185 per passenger.Departing Wed, 10 Feb.One-way flight with Icelandair.Outbound indirect flight with Icelandair, departs from London Gatwick on Wed, 10 Feb, arriving in Seattle / Tacoma International.Price includes taxes and charges.From Rs120,185, select.

Seattle.Rs124,142 per passenger.Departing Thu, 29 Apr.One-way flight with Ryanair.Outbound indirect flight with Ryanair, departs from London Stansted on Thu, 29 Apr, arriving in Seattle / Tacoma International.Price includes taxes and charges.From Rs124,142, select.

Seattle.Rs124,294 per passenger.Departing Thu, 3 Jun.One-way flight with Ryanair.Outbound indirect flight with Ryanair, departs from London Stansted on Thu, 3 Jun, arriving in Seattle / Tacoma International.Price includes taxes and charges.From Rs124,294, select.

Seattle.Rs136,163 per passenger.Departing Tue, 6 Jul.One-way flight with Finnair.Outbound indirect flight with Finnair, departs from London Heathrow on Tue, 6 Jul, arriving in Seattle / Tacoma International.Price includes taxes and charges.From Rs136,163, select.

Seattle.Rs137,168 per passenger.Departing Wed, 13 Jan.One-way flight with British Airways.Outbound direct flight with British Airways departs from London Heathrow on Wed, 13 Jan, arriving in Seattle / Tacoma International.Price includes taxes and charges.From Rs137,168, select.

Seattle.Rs137,168 per passenger.Departing Sat, 13 Feb.One-way flight with British Airways.Outbound direct flight with British Airways departs from London Heathrow on Sat, 13 Feb, arriving in Seattle / Tacoma International.Price includes taxes and charges.From Rs137,168, select.

Seattle.Rs137,314 per passenger.Departing Fri, 20 Nov.One-way flight with British Airways.Outbound direct flight with British Airways departs from London Heathrow on Fri, 20 Nov, arriving in Seattle / Tacoma International.Price includes taxes and charges.From Rs137,314, select.

Seattle.Rs137,643 per passenger.Departing Thu, 29 Oct.One-way flight with British Airways.Outbound direct flight with British Airways departs from London Heathrow on Thu, 29 Oct, arriving in Seattle / Tacoma International.Price includes taxes and charges.From Rs137,643, select.

Find the cheapest month to fly from London to Seattle

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like London to Seattle flights are currently cheapest in August.

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Direct flights from London to Seattle

Alternative London to Seattle routes

Looking for the cheapest, fastest or easiest route from London to Seattle? You could fly into the following airports instead.

London to Seattle: Flight information

The things to know before you go.

Cheapest flight found	Rs92,977
Cheapest month to fly	August
Average flight time	10 hrs, 13 mins
Most popular airline	Alaska Airlines
Average flights per week	156

Finding cheap flights from London to Seattle: Frequently asked questions

How many airports are there in Seattle?

There are 4 airports in Seattle: Seattle Lake Union SPB, Seattle Boeing Fld, Seattle / Tacoma International, and Paine Field.

How much are return flights from London to Seattle?

The best price we found for a return flight from London to Seattle is Rs152,083. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.

How long does it take to fly from London to Seattle?

10 hours and 13 minutes is the average flight time from London to Seattle.

Which airlines fly direct from London to Seattle?

Alaska Airlines, Delta and Virgin Atlantic fly direct from London to Seattle.

How many flights are there a week from London to Seattle?

As of July 2026, there are 156 flights per week flying from London to Seattle.

When is the cheapest time to fly from London to Seattle?

The cheapest month to fly from London to Seattle is usually September.

Which is the cheapest airport to fly into in Seattle?

If you're flying from London, the cheapest airport near Seattle is Seattle / Tacoma International – which is 19.5 km away from the centre of Seattle. We've found flights into this airport from Rs152,083.

Which upcoming date is cheapest to fly from London to Seattle on?

After crunching the numbers on our flight calendar, we found that it is currently cheapest to fly from London to Seattle on Wednesday, 23 September 2026.

Can I get a direct flight from London to Seattle?

Yes – the average flight time is 10 hours and 13 minutes.

How can I get the best flight deal from London to Seattle?

We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to Seattle but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.

When is the best time to book flights to Seattle?

We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to Seattle is around 40 days in advance, so don’t leave your flight to the last minute.

What’s the weather like in Seattle?

In July, the average temperature is usually around 17°C. August is typically the warmest month in Seattle, when it usually averages around 23°C. You can expect the least rain in July. The coldest month is December, with temperatures averaging 0°C. The rainiest month is November.

Which is the cheapest airline to fly from London to Seattle with?

The cheapest airline that flies to Seattle is Ryanair. And the cheapest airline that flies to Seattle Boeing Fld Airport is Virgin Atlantic.

Travelling from London to Seattle: what you need to know

London has plenty of airports to fly out of. Explore your departure options from London Heathrow Airport (LHR) and London Gatwick Airport (LGW) when organising your flight from London to Seattle. London Stansted Airport (STN), London Luton Airport (LTN) and London City Airport (LCY) are the other main bases in the city.
When it comes to landing in Seattle, Seattle / Tacoma International Airport (SEA) and Seattle Lake Union SPB Airport (LKE) are the chief entry points.
Book a direct London to Seattle flight and you'll be in the air for an average of 10 hours 5 minutes.
Seattle's timezone is UTC-8, which makes Seattle eight hours behind London.
London Heathrow Airport (LHR) to Seattle / Tacoma International Airport (SEA) is the busiest route. When booking your flight from London to Seattle, you can pick from 31 services every week between LHR and SEA.
Give yourself plenty of time to get on your London to Seattle flight. As a rule of thumb, arrive at least two hours before international departures and an hour ahead for domestic flights.
You can expect bigger queues during popular months such as July. Arriving up to four hours ahead of international flights and two hours for a domestic departure will give you plenty of time for security and boarding.

How to find the cheapest flights from London to Seattle

Don't wait until the last minute. You're more likely to get cheap London to Seattle flights if you book early. Airlines often offer some great early bird deals.
If you can be flexible with your travel dates, use the 'Whole month' tool. It'll show you the lowest price across the month when searching for your plane ticket from London to Seattle.
You don't need to check every day to see if prices have dropped when you create a Price Alert. We'll notify you as soon as a better deal is available on cheap flights from London to Seattle.
Save money on your London to Seattle flight with the help of our filters. Choose your ideal duration, departure time and airlines, then sort the results by 'Cheapest' to see the best deals.

Flying from London

London Heathrow Airport (LHR)

If you're searching for a direct flight from London to Seattle, you can leave from London Heathrow Airport (LHR). Travel from LHR to Seattle / Tacoma International Airport (SEA) in one seamless journey.
You'll have your pick of airlines that offer direct London to Seattle plane tickets out of LHR. Book your seat with one of these:
A stopover is the perfect opportunity to take a break from travelling — and perhaps even tour another city. When searching for London to Seattle flights departing from London Heathrow Airport, uncheck the 'Direct flights only' box to see where you can visit along the way. Some popular options include:
- Paris Charles de Gaulle Airport (CDG)
- Vancouver International Airport (YVR)
- Reykjavik Keflavik Airport (KEF)
Located around 26 kilometres from the centre of London, LHR can be reached in about 45 minutes by car (depending on traffic). The journey on public transport is roughly 25 minutes.
Want a leisurely start to your holiday? Stay near London Heathrow Airport. Whether you have an early flight from London to Seattle or want to avoid feeling rushed, these hotels are the answer:
78% of flights taking off from London Heathrow Airport make it to their destination on time.

London Gatwick Airport (LGW)

Visit family or friends or just take a moment to recharge with a stopover. If you'd like to break up your London to Seattle flight, here's where you can stop when taking off from London Gatwick Airport:
- Paris Charles de Gaulle Airport (CDG)
- Vancouver International Airport (YVR)
- Reykjavik Keflavik Airport (KEF)
LGW is around 40 kilometres from central London. It'll take you 1 hour 5 minutes or so to get to the airport driving from the city centre. Public transport takes roughly 45 minutes.
You're going on holiday, so why not book another night away? Think about checking in to one of these hotels near London Gatwick Airport the day before your flight from London to Seattle:
Most flights that leave London Gatwick Airport touch down at their destination as expected. It boasts a strong on-time performance rate of 83%.

London Stansted Airport (STN)

Searching for a ticket from London to Seattle with one or more stops can offer you more choice of departure times along with better fares. When departing from London Stansted Airport (STN), here's where you can detour to on the way to Seattle:
- Amsterdam Schiphol Airport (AMS)
- Dublin Airport (DUB)
- Reykjavik Keflavik Airport (KEF)
The journey time to STN from the centre of London is around 45 minutes on public transport. If you're in a car, it'll take you about 1 hour 5 minutes to cover the 48 kilometres or so.
Make departure day worry-free — stay near London Stansted Airport and know you'll get to your boarding gate with time to spare. Settle in at one of these hotels the day before if you're catching an early London to Seattle flight:
STN has a top-tier on-time arrivals performance of 80%, so you can rely on your flight to stay on course and reach your final stop as expected.

Arriving in Seattle

Seattle / Tacoma International Airport (SEA)

Seattle / Tacoma International Airport (SEA) is approximately 19 kilometres from central Seattle. If you're catching a taxi or a ride-share, the drive takes around 25 minutes.
Getting to the centre by public transport takes about 35 minutes.
If you're arriving on a late flight from London to Seattle, few things beat the convenience of staying close to the terminal. Grab your bags from the carousel and then be showered and snoozing soon after at one of these accommodation options near SEA:
Grab a Seattle / Tacoma International Airport rental car and explore Seattle and beyond with your own set of wheels. Thrifty, Europcar and Budget are leading providers you can book with here.
Lock in the best deal by booking your vehicle from Seattle / Tacoma International Airport around one week in advance of your trip.

Paine Field Airport (PAE)

Paine Field Airport (PAE) is around 32 kilometres from the centre of Seattle. Once you've hopped off your flight from London to Seattle, it'll take you approximately 20 minutes to reach the heart of the city in a taxi or ride-share.
If you hop on public transport, the journey will take you 40 minutes or so.
There are some comfortable places ready to welcome you near PAE. Unwind after your London to Seattle flight at one of these well-located options:
Grab a Paine Field Airport rental car and be in control of your journey. You can select from trusted rental outlets like Budget and Enterprise.
Avoid filling out forms on the spot and save time at the rental desk by having everything prearranged. Reserve your ride from PAE ahead of time so you can just get the keys and go.

Seattle Boeing Fld Airport (BFI)

Seattle Boeing Fld Airport (BFI) is about 11 kilometres from the centre of Seattle. It'll take you about 20 minutes to get to the city centre in a ride-share or taxi once you've hopped off your flight from London to Seattle.
Public transport will take you there in about 35 minutes.
Whether you're searching for a compact for a solo escape or a roomy SUV to move the whole family, you'll find the ideal Seattle Boeing Fld Airport rental car for your needs. Explore the range of wheels available here from companies such as Alamo, Budget and Avis.
If you prefer a specific make or model, booking early gives you a better shot at finding what you want. Book your ride from BFI at least a couple of weeks ahead of your flight from London to Seattle.

Best time to go to Seattle

It's time to plan your travel dates for your flight from London to Seattle. July is the busiest month for a trip to Seattle. If you want a more low-key vibe, go in March.
Book a London to Seattle ticket departing in August if you want to explore the city during its warmest month. You can expect temperatures in Seattle to range from 12ºC to 28ºC.
February sees average temperatures of between -1ºC and 11ºC. Search for cheap flights from London to Seattle around that time if you like cooler conditions.

More about Seattle

When it comes to looking for somewhere to rest your head, you'll find the top stays in Seattle right here. Check out these options as soon as you've booked your flight from London to Seattle:
There are so many things to explore in this city it can be difficult to know where to start. Space Needle, Pike Place Fish Market and The Museum of Flight are highlights which should be on any good Seattle itinerary.

Explore more of the United States

Seattle has plenty to offer, but there are so many other corners of the United States just waiting to be explored. About 241 kilometres south of Seattle, a visit to Portland will keep you on the move. Start with attractions like Portland Japanese Garden, Peninsula Park Rose Garden and International Rose Test Garden.
Around 370 kilometres east of Seattle, Spokane is another essential stop in the United States. No visit is complete without checking out Riverside State Park, Spokane Falls (Upper Falls) and Cathedral of Our Lady of Lourdes.