Which airports can I use when flying from London to Seattle?

Flights from London to Seattle usually depart from London (YXU) and arrive at Seattle/Tacoma Intl (SEA).

Which cabin classes can I book on flights from London to Seattle?

Only Economy Class is available on flights from London to Seattle.

Which airports do connecting flights from London to Seattle pass through?

Connecting flights from London to Seattle most commonly pass through: • Calgary (YYC) – 69% of one-stop connections • Toronto Pearson Intl (YYZ) – 31% of one-stop connections

Can I save money by using flexible dates for flights from London to Seattle?

Yes. Flexible dates can save you up to 60% on flights from London to Seattle. Tuesday is the cheapest departure day at C$ 359 round-trip on average, while Thursday is the most expensive at C$ 895, a difference of C$ 536. KAYAK's flexible dates feature shows options up to three days before and after your selected dates, making it easier to compare nearby fares.

Which popular places can I visit in Seattle?

Some of the most popular sights in Seattle are Lumen Field, T-Mobile Park, and Seattle Waterfront. These are among the most viewed places in Seattle on KAYAK.

How long does a flight from London to Seattle take?

A direct flight from London to Seattle takes 00m, covering 5,181 km.

Do I need a passport to fly from London to Seattle?

Yes, a valid passport is required for this international route. Many destinations require at least six months of validity beyond your travel dates. Check your passport expiry well before booking.

Have flight prices from London to Seattle changed much recently?

Yes. Based on fares seen in the past 5 days, round-trip prices on this route showed a wide range, from about C$ 683 to C$ 1,930. That means the highest observed fare was about 3x higher than the lowest one.

How are flight prices from London to Seattle looking right now?

One-way fares from London to Seattle are currently higher than usual. Average one-way flight prices are about C$ 491, which is 11% above the typical average for this route.

How much time can I save by choosing a different layover airport when travelling from London to Seattle?

Flying via Toronto Pearson Intl (YYZ) gives the shortest average 1-stop total travel time at 8h 10m, compared with 11h 04m via Calgary (YYC).

What is the time difference between London and Seattle?

Seattle is 3 hours behind London (Pacific Time vs Eastern Time). Plan for the time shift when scheduling connections or first-day activities.

What car rental options are available at Seattle/Tacoma Intl Airport (SEA)?

Seattle/Tacoma Intl Airport (SEA) hosts 5 major car rental companies, with daily rates averaging C$ 86 for economy cars. Top options include: • Fox • Europcar • Thrifty • Budget • Hertz

How much should I expect to pay for a London to Seattle flight?

Round-trip flights from London to Seattle range from C$ 456 to C$ 855, with an average of C$ 511 over the past 12 months. Anything below C$ 456 counts as a good deal.

How much is a round-trip flight from London to Seattle?

Round-trip flights from London to Seattle typically range from C$ 456 to C$ 855. The lowest price found in the past 5 days was C$ 683, on WestJet.

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

WestJet (C$ 683) and Air Canada (C$ 959) are the cheapest airlines to fly round-trip from London to Seattle according to KAYAK data over the last 5 days.

What’s the most popular layover airport when flying from London to Seattle?

Calgary (YYC) is the most popular layover for the London to Seattle route. 69% of KAYAK users who booked 1-stop round-trips over the past 3 months connected via YYC.

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

Flights via Calgary (YYC) offer the most affordable fares, with an average round-trip price of C$ 425. Based on KAYAK data over the past 3 months.

When flying from London to Seattle, which airport offers the shortest layover?

Toronto Pearson Intl (YYZ) had the shortest average connection time for London to Seattle layovers at 5h 24m over the past three months.

C$ 366 CHEAP FLIGHTS from London to Seattle (YXU - SEA)

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Cheapest round-trip

C$ 683

Typical prices: C$ 456-C$ 855

WestJet

Mon 19/11Thu 22/11

YXU - SEA • 1 stop

Cheapest one-way flights

C$ 366

Typical prices: C$ 320-C$ 497

Multiple Airlines

Wed 12/12

YXU - SEA • 3 stops

Direct flights

Not available

There are currently no direct flights between London and Seattle. You'll need to take a connecting flight to reach the destination.

Insights

When to travel

April

Cheapest • 32% price drop

May

Most popular

Good to know

Top layover airports

Calgary (YYC)

Cheapest • Avg C$ 425 (round-trip)

Toronto Pearson Intl (YYZ)

Shortest trip • 8h 10m (one-way)

Insights

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Cheap Flights from London to Seattle (YXU-SEA)

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Round-trip

One-way