Cheap flights from Seattle (SEA) to London (LON) from $250

If you book a flight to London from Seattle, you will be flying from Seattle/Tacoma Intl, which is the city’s only airport. Seattle/Tacoma Intl (SEA) is located 11.4 mi from the center of Seattle. There are 19 flights from Seattle/Tacoma Intl to London per day from 16 different airlines.

Yes, there are multiple flights from Seattle to London for under $600. The cheapest flight booked recently is on Icelandair for just $533, but on average you can expect to pay $572.

Cheapflights has at least 20 direct flights from Seattle to London under $600. A good price for a nonstop flight from Seattle to London is less than $660.

There are currently 20+ open flights from Seattle to London within the next 7 days for less than $1,000.

Days when nonstop flights are available for this flight are: Wednesday.

Travelers can expect 4 flights from Seattle to London on average per day.
Afternoon (Noon - 6pm) - 100% of flight departures

A quick flight from Seattle to London can take about 9h 20m. Icelandair provides one of the quickest options available for as low as $533. The distance between Seattle and London is about 4812 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

Cheapflights users have booked flights from Seattle to London round-trip from $533. Other airlines that can offer you cheap pricing are British Airways, from $536, and Lufthansa, from $568. Users have found that Icelandair is 37% cheaper than the other options available to this destination.

One-way options have recently been found by users for as low as $268 on Icelandair. Other airlines that offer cheap prices include WestJet from $283 and Air Canada from $305 one-way.

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

Consider American Airlines (70%), Aer Lingus (70%) or Finnair (70%) when booking your flight. These represent the most reliable airlines when flying from Seattle to London.

Looking at all options, your cheapest flight can be booked for $510. While the most popular route (Seattle/Tacoma Intl - London Heathrow) can be booked for $568 on average our data indicates $3,014 when flying from Seattle to London.

SEA stands for Seattle/Tacoma Intl Airport, while LHR stands for London Heathrow Airport. These codes are often called IATA codes, a set of identifiers established by IATA (International Air Transport Association) that is widely used by airlines and the aviation industry. London Gatwick Airport (LGW), London Stansted Airport (STN), London Luton Airport (LTN), London City Airport (LCY), London Southend Airport (SEN) are other airports near this flight route and their unique identifiers/IATA codes.

The most popular layover on flights from Seattle to London is Reykjavik.

Reykjavik travelers tend to visit Hallgrímskirkja, Icelandic Phallological Museum, and Harpa more than anywhere else. Hallgrímskirkja, Icelandic Phallological Museum, and Harpa are located about 23.2 mi, 23.5 mi, and 23.3 mi, respectively from Reykjavik Keflavik Intl. Travelers in need of a car in Reykjavik can rent one for about $57 per day.

Flights departing from Seattle and landing in London layover in Dublin least frequently.

The amount of baggage you can bring on your Seattle to London flight depends on the airline and the type of fare you've chosen. After entering your flight details, you'll be able to view the specific baggage policies for each deal in the search results. Keep in mind that certain deals may offer additional baggage allowance.

Yes, Cheapflights allows you to browse and filter Seattle to London flight deals by airline. After entering your origin and destination, use the available filters to view flights offered by airlines.

Yes. In addition to deals on Seattle to London flights, Cheapflights offers vacation packages that include both flights and hotel.

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Seattle to London.

Yes. Cheapflights offers flight deals from Seattle to London by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

Many airlines flying from Seattle to London offer the option to travel with pets. After selecting a flight deal, you can find more information about the airline's pet policy on their official website or by contacting the airline directly. Please note that additional fees and restrictions may apply.

Yes, you can often find last-minute deals on Seattle to London flights on Cheapflights. However, these deals can vary and may not always be available. We recommend checking back frequently or signing up for price alerts for the most up-to-date deals.

The Seattle to London flight deals you see on this page were last updated on 6/10.

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

Currently, November is the cheapest month in which you can book a flight from Seattle to London (average of $653). Flying from Seattle to London in June is currently the most expensive (average of $1,102). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.