Question 1

Which is the best airline for flights from Seattle to London, Alaska Airlines or KLM?

Accepted Answer

The two airlines most popular with KAYAK users for flights from Seattle to London are Alaska Airlines and KLM. With an average price for the route of £758 and an overall rating of 7.9, Alaska Airlines is the most popular choice. KLM is also a great choice for the route, with an average price of £562 and an overall rating of 7.8.

Question 2

How long does a flight from Seattle to London take?

Accepted Answer

A direct flight to London will take on average 9h 15m to travel the 4,790 miles flying distance from Seattle.

Question 3

How many flights are there between Seattle and London per day?

Accepted Answer

Each day, there are 5 direct flights that take off from Seattle and land in London, with an average flight time of 9h 25m. The most common departure time is 21:00 and most flights take off in the evening. Each week, there are 35 flights and there are the same number of flights each day (5).

Question 4

How many flights are there between Seattle and London per day?

Accepted Answer

Each day, there are 5 direct flights that take off from Seattle and land in London, with an average flight time of 9h 25m. The most common departure time is 21:00 and most flights take off in the evening. Each week, there are 35 flights and there are the same number of flights each day (5).

Question 5

What is the cheapest flight from Seattle to London?

Accepted Answer

In the last 5 days, the lowest price for a flight from Seattle to London was £208 for a one-way ticket and £476 for a return.

Question 6

Which airlines fly most frequently between Seattle and London?

Accepted Answer

British Airways connects Seattle to London with 14 flights per week. Alaska Airlines also offers 7 flights per week, while Delta follows with 7 flights per week.

Question 7

Which airlines fly most frequently between Seattle and London?

Accepted Answer

British Airways connects Seattle to London with 14 flights per week. Alaska Airlines also offers 7 flights per week, while Delta follows with 7 flights per week.

Question 8

What’s the cheapest day of the week to fly from Seattle to London?

Accepted Answer

Your flight ticket price will generally be cheaper if you fly to London on a Tuesday and more expensive on a Sunday. On your return trip to Seattle, you should consider flying back on a Thursday, and avoid Sundays for better deals.

Question 9

What’s the cheapest day of the week to fly from Seattle to London?

Accepted Answer

Your flight ticket price will generally be cheaper if you fly to London on a Tuesday and more expensive on a Sunday. On your return trip to Seattle, you should consider flying back on a Thursday, and avoid Sundays for better deals.

Question 10

Which airports will I be using when flying from Seattle to London?

Accepted Answer

Seattle is served by only 1 airport and there are 2 airports in London. You will leave Seattle from Seattle/Tacoma Intl and you will be arriving in London at one of these airports: London City or London Heathrow.

Question 11

What’s the earliest departure time from Seattle to London?

Accepted Answer

Early birds can take the earliest flight from Seattle at 13:30 and will be landing in London at 06:45.

Question 12

What’s the latest departure time from Seattle to London?

Accepted Answer

If you prefer to fly at night, the latest flight from Seattle to London jets off at 21:50 and lands at 15:35.

Question 13

Which airlines fly direct between Seattle and London?

Accepted Answer

There are 3 airlines that fly direct from Seattle to London. They are: Alaska Airlines, British Airways and Virgin Atlantic. The cheapest price of all airlines flying this route was found with British Airways at £458 for a return flight. On average, the best prices for this route can be found at Virgin Atlantic.

Question 14

Which airlines fly direct between Seattle and London?

Accepted Answer

There are 3 airlines that fly direct from Seattle to London. They are: Alaska Airlines, British Airways and Virgin Atlantic. The cheapest price of all airlines flying this route was found with British Airways at £458 for a return flight. On average, the best prices for this route can be found at Virgin Atlantic.

Question 15

Which airlines offer Wi-Fi service onboard planes from Seattle to London?

Accepted Answer

All the following airlines offer inflight Wi-Fi service on the Seattle to London flight route: Delta, Virgin Atlantic, KLM, Air France, American Airlines, and JetBlue.

Question 16

Which aircraft models fly most regularly from Seattle to London?

Accepted Answer

The Boeing 787-10 Dreamliner is the aircraft model that flies most regularly on the Seattle to London flight route.

Question 17

Which airline alliances offer flights from Seattle to London?

Accepted Answer

oneworld, and SkyTeam are the airline alliances operating flights between Seattle and London, with oneworld being the most commonly used for this route.

Question 18

On which days can I fly direct from Seattle to London?

Accepted Answer

There are direct flights from Seattle to London on a daily basis.

Question 19

Are there onsite hotels at Heathrow Airport or Gatwick Airport?

Accepted Answer

Heathrow Airport features a number of hotels connected directly to its terminals, so visitors have a selection of airports to choose from. In Terminal 4 travelers will find the Hilton London Heathrow Airport and the capsule hotel YOTEL, while in Terminal 5 there is the Sofitel London Heathrow. Gatwick airport also has a variety of hotel options available, such as Hampton by Hilton, YOTELAIR, and Bloc Hotel.

Question 20

Can I fly from Seattle to London non-stop?

Accepted Answer

British Airways, Iberia, Virgin Atlantic, Finnair, and Delta Air Lines all offer direct nonstop flights from Seattle to London via Heathrow Airport. Many other airlines also offer one-stop flights to London from Seattle with final destinations varying largely between Heathrow Airport, Gatwick Airport, and London City Airport.

Question 21

What is the quickest way from Heathrow Airport to downtown London?

Accepted Answer

The Heathrow Express is the fastest way to get to central London from Heathrow Airport and is conveniently connected to Terminals 2, 3, and 5. There is also a direct London Underground connection via the Piccadilly Line, for those who prefer the cheaper (but slower) method of travel.

Question 22

Should I fly to Heathrow Airport or Gatwick Airport?

Accepted Answer

Both airports are conveniently connected via public transport to central London with travel times roughly equal. However, if your final destination is on the south or east side of London, then Gatwick is likely the better option due to its close proximity, while Heathrow is more convenient for destinations on the west and north side.

Question 23

What is the cheapest month to fly from Seattle to London?

Accepted Answer

The cheapest month for flights from Seattle to London is January, where tickets cost £477 (return) on average. On the other hand, the most expensive months are June and July, where the average cost of round-trip tickets is £897 and £771 respectively.

Question 24

What is the cheapest month to fly from Seattle to London?

Accepted Answer

The cheapest month for flights from Seattle to London is January, where tickets cost £477 (return) on average. On the other hand, the most expensive months are June and July, where the average cost of round-trip tickets is £897 and £771 respectively.

Question 25

How does KAYAK find such low prices on flights from Seattle to London?

Accepted Answer

KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Seattle to London.

Question 26

How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Seattle to London?

Accepted Answer

KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to London from Seattle is likely to change within 7 days, so travelers know whether to wait or book now.

Question 27

What is the Hacker Fare option on flights from Seattle to London?

Accepted Answer

Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional return ticket. You could then fly to London with an airline and back to Seattle with another airline.

Question 28

What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Seattle to London?

Accepted Answer

Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to London from Seattle up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Question 29

What is the cheapest stopover airport when flying from Seattle to London?

Accepted Answer

Flights via Reykjavik (KEF) offer the most affordable fares, with an average price of £562 for a return.

Question 30

What is the most popular stopover airport when flying from Seattle to London?

Accepted Answer

Reykjavik (KEF) is the top choice – 73% of KAYAK users who clicked on one-stop flights from Seattle to London picked an itinerary connecting there.

Question 31

Which stopover airport has the quickest connection when flying from Seattle to London?

Accepted Answer

If you prefer a quick connection, Dublin (DUB) often has the shortest stopovers from Seattle to London, with an average time of 2h 00m.

Question 32

Which stopover airport offers the shortest total travel time from Seattle to London?

Accepted Answer

Consider flying via Dublin (DUB) for the shortest journey. The average one-way travel time for flights connecting there is 11h 30m.

Question 33

How often are flights from Seattle to London delayed?

Accepted Answer

Weekly flights between Seattle and London historically see delays in approximately 14% of cases, with the average delay over the past year being 134 minutes.

Question 34

Which airline has the best punctuality record on Seattle to London flights?

Accepted Answer

Based on our data, Virgin Atlantic have experienced the fewest delays on this route in the past 12 months, with only about 6% of their flights encountering any delays.

Question 35

What day of the week experiences the fewest flight delays on this route?

Accepted Answer

Statistically, Saturday is the day of the week with the fewest delays on this flight route, while Wednesday has typically experienced more delays than other days.

Question 36

What is the most punctual flight time for Seattle to London flights?

Accepted Answer

Typically, flights leaving in the early afternoon tend to face fewer delays, whereas flights in the evening have historically encountered delays more often.

Question 37

Which cabin class options are there for flights between Seattle and London?

Accepted Answer

There are 2 cabin class options for the route. These are Economy and Prem Economy. Perform a search on KAYAK to find the latest prices and availability for all cabin fares, which differ across airlines.

Question 38

Which cabin class options are there for flights between Seattle and London?

Accepted Answer

There are 2 cabin class options for the route. These are Economy and Prem Economy. Perform a search on KAYAK to find the latest prices and availability for all cabin fares, which differ across airlines.

Question 39

Which airlines provide the cheapest flights from Seattle to London?

Accepted Answer

In the past 5 days, the cheapest return tickets from Seattle to London were found on Scandinavian Airlines (£477) and Condor (£499).

Question 40

Which airlines provide the cheapest flights from Seattle to London?

Accepted Answer

In the past 5 days, the cheapest return tickets from Seattle to London were found on Scandinavian Airlines (£477) and Condor (£499).

Question 41

What is the cheapest Seattle to London flight route?

Accepted Answer

The cheapest return flight from Seattle to London costs £670 on the route between Seattle (SEA) and London Heathrow Airport (LHR). It is also the most popular route.

Question 42

What is the cheapest Seattle to London flight route?

Accepted Answer

The cheapest return flight from Seattle to London costs £670 on the route between Seattle (SEA) and London Heathrow Airport (LHR). It is also the most popular route.

Question 43

How far in advance should I book a flight from Seattle to London?

Accepted Answer

To get a below average price on the flight from Seattle to London, you should book around 3 weeks before departure, which saves you about 31% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 5 weeks before departure.

Question 44

How far in advance should I book a flight from Seattle to London?

Accepted Answer

To get a below average price on the flight from Seattle to London, you should book around 3 weeks before departure, which saves you about 31% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 5 weeks before departure.

Question 45

Can I save money by flying with a stopover from Seattle to London?

Accepted Answer

Yes, flying with a stopover may cost you more time, but you can also save money on the route, with a 2 stops stopover the cheapest option at £619 on average.

Question 46

Can I save money by flying with a stopover from Seattle to London?

Accepted Answer

Yes, flying with a stopover may cost you more time, but you can also save money on the route, with a 2 stops stopover the cheapest option at £619 on average.

Question 47

How much is a return flight from Seattle to London?

Accepted Answer

Flight prices are below average for this route right now.Flights to London from Seattle usually cost between £520 and £729 in September.
The lowest price found in the past 5 days was £476 on Multiple Airlines (25 Sept–2 Oct).

Question 48

What are the most popular airlines flying to London?

Accepted Answer

The most popular airline among KAYAK users flying to London is Virgin Atlantic, followed by British Airways and Alaska Airlines.

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SEA - LON

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Everything you should know

Cheap Flights from Seattle to London (SEA-LON)

Recent return flight deals from Seattle to London

Recent one-way flight deals from Seattle to London

Recent last minute flight deals from Seattle to London

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KAYAK’s insights & trends for Seattle to London flights

How much is a return flight from Seattle to London?

What is the cheapest Seattle to London flight route?

What’s the cheapest day of the week to fly from Seattle to London?

What is the cheapest month to fly from Seattle to London?

Can I save money by flying with a stopover from Seattle to London?

How far in advance should I book a flight from Seattle to London?

Which airlines provide the cheapest flights from Seattle to London?

Which airlines fly most frequently between Seattle and London?

Which airlines fly direct between Seattle and London?

How often are flights from Seattle to London delayed?

What is the most punctual flight time for Seattle to London flights?

What day of the week experiences the fewest flight delays on this route?

Which airline has the best punctuality record on Seattle to London flights?

What is the most popular stopover airport when flying from Seattle to London?

What is the cheapest stopover airport when flying from Seattle to London?

Which stopover airport offers the shortest total travel time from Seattle to London?

Which stopover airport has the quickest connection when flying from Seattle to London?

Which cabin class options are there for flights between Seattle and London?

How many flights are there between Seattle and London per day?

How long does a flight from Seattle to London take?

What’s the earliest departure time from Seattle to London?

What’s the latest departure time from Seattle to London?

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