Cheap flights from London to Seattle from £262

Leaving on a Tuesday is a viable option for saving on travel. Heavily demanded days of the week can typically drive up the prices you see. Booking your travel for a less competitive day can save up to 20% on the overall cost on flights from London to Seattle.

Travelers have found it’s best to book a flight 49 days in advance to save up to 24% compared to booking the same week of travel. As your travel date approaches, the cost of this flight route may potentially increase. While opting to book 49 days out may not be an option for all, there are still additional ways to secure a deal in the near future. You might find a flight from London to Seattle 1-2 weeks in advance for as low as £555, or £682 for flights within the next 24 hours.

Due to multiple factors, expect to potentially pay more when booking in July. For low rates, February can be a great choice for travel to Seattle. Flights to Seattle from London in February are about £528 on average during February, but can be found for as low as £343.

Unlike in the afternoon, when flights are generally more expensive, you can save up to 10% on flights from London to Seattle by exploring options for tickets in the morning.

Located just 11.4 mi from the city center, Seattle/Tacoma Intl is the airport most travelers will use when flying to Seattle from London. Booking flights from London to Seattle/Tacoma Intl (SEA) should be relatively easy as there are 21 daily inbound flights from London from 14 different airlines.

Yes, there are multiple flights from London to Seattle for under £400. The cheapest flight booked recently is on Icelandair for just £369, but on average you can expect to pay £404.

Cheapflights has at least 20 direct flights from London to Seattle under £500. A good price for a nonstop flight from London to Seattle is less than £470.

There are currently 20+ open flights from London to Seattle within the next 7 days for less than £500.

Icelandair, at £369, was found to be the cheapest airline from London to Seattle.Alternate airlines flying return to your destination include American Airlines and British Airways. Icelandair is priced at 30% lower than the current average price of a flight leaving 3 months from now.

When deciding which route to take from London to Seattle consider London Heathrow - Seattle/Tacoma Intl, London Gatwick - Seattle/Tacoma Intl or London City - Seattle/Tacoma Intl as they are the most popular.

Before booking your flight from London to Seattle check out the most popular airlines for this route: American Airlines, Air Canada or Air France.

Consider Alaska Airlines (89%), Air France (77%) or Delta (77%) when booking your flight. These represent the most reliable airlines when flying from London to Seattle.

On average you can expect to pay £1,263 for a flight from London to Seattle. The cheapest flight overall is £359 while the most popular route, (London Heathrow - Seattle/Tacoma Intl) is currently priced at £414.

London Heathrow Airport is LHR and Seattle/Tacoma Intl Airport is SEA. These codes are created by the International Air Transport Association (IATA) and airlines use them to identify the departing and arrival airports in the flight routes they service. This flight route has multiple associated airports, so we think it might be helpful to learn the name and codes of them as well. They are London Gatwick Airport (LGW), London City Airport (LCY), London Stansted Airport (STN), London Luton Airport (LTN), London Southend Airport (SEN).