Cheap Flights from London to Seattle from P28,394

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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? Find the lowest prices on one-way and return tickets right here.

Seattle.P28,394 per passenger.Departing Mon, 21 Apr, returning Mon, 28 Apr.Return flight with Icelandair.Outbound indirect flight with Icelandair, departs from London Gatwick on Mon, 21 Apr, arriving in Seattle / Tacoma International.Inbound indirect flight with Icelandair, departs from Seattle / Tacoma International on Mon, 28 Apr, arriving in London Gatwick.Price includes taxes and charges.From P28,394, select.

Seattle.P28,730 per passenger.Departing Wed, 30 Apr, returning Wed, 7 May.Return flight with Icelandair.Outbound indirect flight with Icelandair, departs from London Gatwick on Wed, 30 Apr, arriving in Seattle / Tacoma International.Inbound indirect flight with Icelandair, departs from Seattle / Tacoma International on Wed, 7 May, arriving in London Gatwick.Price includes taxes and charges.From P28,730, select.

Seattle.P28,994 per passenger.Departing Wed, 5 Mar, returning Mon, 24 Mar.Return flight with Icelandair.Outbound indirect flight with Icelandair, departs from London Gatwick on Wed, 5 Mar, arriving in Seattle / Tacoma International.Inbound indirect flight with Icelandair, departs from Seattle / Tacoma International on Mon, 24 Mar, arriving in London Gatwick.Price includes taxes and charges.From P28,994, select.

Seattle.P29,166 per passenger.Departing Mon, 5 May, returning Tue, 13 May.Return flight with Icelandair.Outbound indirect flight with Icelandair, departs from London Gatwick on Mon, 5 May, arriving in Seattle / Tacoma International.Inbound indirect flight with Icelandair, departs from Seattle / Tacoma International on Tue, 13 May, arriving in London Gatwick.Price includes taxes and charges.From P29,166, select.

Seattle.P29,487 per passenger.Departing Sat, 1 Nov, returning Tue, 11 Nov.Return flight with Icelandair.Outbound indirect flight with Icelandair, departs from London Gatwick on Sat, 1 Nov, arriving in Seattle / Tacoma International.Inbound indirect flight with Icelandair, departs from Seattle / Tacoma International on Tue, 11 Nov, arriving in London Gatwick.Price includes taxes and charges.From P29,487, select.

Seattle.P29,487 per passenger.Departing Wed, 8 Oct, returning Wed, 15 Oct.Return flight with Icelandair.Outbound indirect flight with Icelandair, departs from London Gatwick on Wed, 8 Oct, arriving in Seattle / Tacoma International.Inbound indirect flight with Icelandair, departs from Seattle / Tacoma International on Wed, 15 Oct, arriving in London Gatwick.Price includes taxes and charges.From P29,487, select.

Seattle.P29,487 per passenger.Departing Wed, 1 Oct, returning Tue, 2 Dec.Return flight with Icelandair.Outbound indirect flight with Icelandair, departs from London Gatwick on Wed, 1 Oct, arriving in Seattle / Tacoma International.Inbound indirect flight with Icelandair, departs from Seattle / Tacoma International on Tue, 2 Dec, arriving in London Gatwick.Price includes taxes and charges.From P29,487, select.

Seattle.P29,502 per passenger.Departing Wed, 3 Dec, returning Sun, 7 Dec.Return flight with Icelandair.Outbound indirect flight with Icelandair, departs from London Gatwick on Wed, 3 Dec, arriving in Seattle / Tacoma International.Inbound indirect flight with Icelandair, departs from Seattle / Tacoma International on Sun, 7 Dec, arriving in London Gatwick.Price includes taxes and charges.From P29,502, 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 April.

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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	P28,394
Cheapest month to fly	April
Average flight time	10 hrs, 8 mins
Most popular airline	KLM
Average flights per week	124

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 P28,394. 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 8 minutes is the average flight time from London to Seattle.

Which airlines fly direct from London to Seattle?

KLM, Alaska Airlines and Aer Lingus fly direct from London to Seattle.

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

As of February 2025, there are 120 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 February 2025.

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 P28,394.

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 Monday, 21 April 2025.

Can I get a direct flight from London to Seattle?

Yes – the average flight time is 10 hours and 8 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 February, the average temperature is usually around 4°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 Icelandair. And the cheapest airline that flies to Seattle Boeing Fld Airport is Finnair.

Flying from London to Seattle: what you need to know

London has plenty of airports where you can jet off on adventures. Check out your departure options from London Heathrow Airport (LHR) and London Gatwick Airport (LGW) when organising your flight from London to Seattle. Stansted Airport (STN), London Luton Airport (LTN) and London City Airport (LCY) are the other main bases in the city.
Seattle-Tacoma International Airport (SEA) and Lake Union Sea Plane Base (LKE) are Seattle's major gateways.
10 hours 3 minutes is the average journey time for a direct flight from London to Seattle. Following the UTC-7 timezone, Seattle is 7 hours behind London.
With 38 weekly flights between the two airports, London Heathrow Airport (LHR) to Seattle-Tacoma International Airport (SEA) is the most popular route. Board the earliest flight from London to Seattle with British Airways at 09:25. If you prefer to make the most of your day before flying, the last flight from LHR to SEA is with Delta Air Lines at 16:50.
Give yourself enough time to get on your flight from London to Seattle. As a rule of thumb, arrive two hours before international departures and an hour ahead for domestic flights.
Longer lines at security and check-in are more likely if you're flying during high season, so allow a little extra breathing room. A good general rule for peak periods? Arrive up to four hours ahead for international flights and at least two hours for domestic departures.
If you hold a passport from United Kingdom, you will need an ETA to visit United States. This applies if you're booking a cheap flight from London to Seattle for tourism purposes. The rules may be different if you're travelling for business or other reasons. Always check the visa rules before you book and certainly before you fly.

Flying from London

London Heathrow Airport (LHR)

You can book a nonstop flight from London to Seattle leaving from London Heathrow Airport (LHR). Begin your journey at LHR and end it at Seattle-Tacoma International Airport (SEA).
At LHR, you can choose from various airlines that operate direct flights from London to Seattle, including:
Stopovers are the perfect opportunity to break up your trip — and perhaps even tour another city. When browsing flights from London to Seattle leaving from London Heathrow Airport, uncheck the 'Direct flights only' box to see where you can visit along the way. Here are some popular options to consider:
- Keflavik International Airport (KEF)
- Vancouver International Airport (YVR)
- Charles de Gaulle Airport (CDG)
Travelling from central London to LHR takes around 1 hour and 1 minute on public transport. If you ride-share, drive or get a cab, you'll cover the 31 kilometres in 57 minutes or so, depending on traffic conditions.
Looking for a convenient hotel close to London Heathrow Airport? If you're catching an early flight from London to Seattle, these accommodation options will have you moments from your departure gate:

London Gatwick Airport (LGW)

Visit friends or family or just take a moment to recharge with a stopover. If you'd like to break up your flight from London to Seattle, check out these options when leaving from London Heathrow Airport:
- Keflavik International Airport (KEF)
- Vancouver International Airport (YVR)
- Charles de Gaulle Airport (CDG)
With public transport, you can travel from central London to LGW in around 1 hour and 26 minutes. The terminal is roughly 80 kilometres away, and getting there by car will take approximately 1 hour and 19 minutes.
Want to enjoy an extra night away before boarding your flight from London to Seattle? Relax in a hotel near London Gatwick Airport before your holiday officially starts. These stays are calling your name:

Arriving in Seattle

Seattle-Tacoma International Airport (SEA)

Seattle-Tacoma International Airport (SEA) to central Seattle is roughly 23 kilometres. It takes around 18 minutes to reach the centre driving.
It takes roughly 54 minutes when travelling by public transport.
The last thing you want is a long journey to your hotel if you're arriving on a late flight from London to Seattle. Stay at one of these accommodation options near SEA instead:

Lake Union Sea Plane Base Airport (LKE)

Lake Union Sea Plane Base Airport (LKE) is about 3 kilometres from central Seattle. Following your flight from London to Seattle, allow for a drive time of approximately 11 minutes to reach the heart of the city.
You can also opt for public transport, which will take around 23 minutes.
After your flight from London to Seattle, unwind at a hotel close to LKE. These are some comfortable options that'll help you slip into relaxation mode:

How to find the cheapest flights from London to Seattle

The cheapest price we've seen for a one-way ticket from London to Seattle is P14,189. For a return flight on this route, the best price is P28,394. Depending on when and how early you book, these fares can change.
To snag cheap tickets from London to Seattle, reserve your trip 9 months before your planned departure.
May is the cheapest month for tickets from London to Seattle. If you're looking to travel during a different time of year, the 'Whole month' tool will give you the lowest prices across every month.
Locking in a cheap ticket from London to Seattle is easy with Price Alerts. Simply create one of these automatic alerts and we'll notify you when the price has fallen.
Use filters to tailor your flights from London to Seattle. Pick your preferred departure and arrival times, airlines and number of stops. Or sort your results by 'Cheapest' to find the best deals.

Best time to go to Seattle

July is the most popular month for flights from London to Seattle. To steer clear of the crowds, go to Seattle in May.
Lock in your flight from London to Seattle for August if you want to explore the city during its warmest month. You can expect temperatures in Seattle to range from 12ºC to 28ºC.
Look for cheap tickets from London to Seattle in February if you like cooler conditions. Temperatures are at their lowest then, ranging between -1ºC and 11ºC on average.

More about Seattle

When it comes to searching for somewhere to lay your head, you'll find the top stays in Seattle right here. Browse these hotels after locking in your flight from London to Seattle:
There are so many things to discover in this city it can be difficult to know where to start. Gas Works - Lake View Point, Queen Anne Bowl Playfield and LMN Architects are highlights which should feature on any good Seattle itinerary.

Complete your Seattle trip with a car rental

We use the same magic that helped you find your cheap flight from London to Seattle to track down amazing deals on car rentals. Search for your ride in seconds and compare offers in one place. Plus you'll find all the info you need to drive in Seattle, from the most popular car rental to the best time to book.