How many flights from London to Seattle are non-stop?

In the trailing 90 days, approximately 12.8% of flights from London to Seattle were non-stop. For flights requiring connections, travelers typically experience a median of 2 stopovers. This indicates that the majority of routes between these two cities involve at least one stop.

How long is the flight from London to Seattle?

The direct flight from London to Seattle typically takes about 10 hours and 16 minutes, covering a distance of 7702 kilometers. Flights with one stop, however, usually have a median duration of 16 hours and 30 minutes. This represents a significant increase in travel time compared to non-stop options.

Are non-stop flights from London to Seattle worth the extra cost?

Historically, non-stop flights from London to Seattle are about 21% more expensive than connecting flights. The median price for a direct flight is $1262, while connecting flights have a median price of $1046. Non-stop options account for approximately 13.3% of the available flights. Travelers may consider the time saved against the increased cost when choosing between direct and connecting routes.

Flights From London

To Seattle

Cheap Flights from London to Seattle

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Deals from

London

RatePunk searches hundreds of travel sites at once for deals on flights to Seattle

Prices updated 2 days ago

405 airlines compared

80%+ AI score for best value

Fares are subject to change and may not be available for all dates. (Data last updated Jul 26, 2026.)

Today’s best flight deals from London to Seattle

Explore current cheapest deals departing from London to Seattle

2026-10-06 – 2026-10-07
LON - Seattle
91% AI deal score
£615
£429
Round trip
2026-10-23 – 2026-10-24
LON - Seattle
88% AI deal score
£622
£431
Round trip
2026-11-18 – 2026-11-30
LON - Seattle
82% AI deal score
£495
£442
Round trip
2026-11-09 – 2026-11-24
LON - Seattle
89% AI deal score
£638
£447
Round trip
2026-10-07 – 2026-10-24
LON - Seattle
89% AI deal score
£566
£449
Round trip
2026-10-14 – 2026-10-15
LON - Seattle
90% AI deal score
£617
£450
Round trip
2026-10-13 – 2026-10-20
LON - Seattle
83% AI deal score
£527
£450
Round trip
2026-11-18 – 2026-11-23
LON - Seattle
83% AI deal score
£528
£450
Round trip
2026-09-08 – 2026-09-29
LON - Seattle
88% AI deal score
£552
£451
Round trip
2026-11-02 – 2026-11-12
LON - Seattle
80% AI deal score
£488
£452
Round trip

London to Seattle: Overview

Insights for flights from London to Seattle

For cheap flights from London to Seattle, fares typically range from $874–$1350, with a median of $1091. Right now, prices are near the typical level. Currently, 0% of recent fares are classified as a good price, indicating that finding exceptional value may require careful timing.

When considering the cheapest time to fly from London to Seattle, January stands out with a median fare of $536. Other cost-effective months include November, with a median fare of $754, and May, where the median fare is $797. These months offer more favorable pricing compared to the overall typical range.

The journey from London to Seattle covers a significant distance of 7702 kilometers, classifying it as a long-haul route. This distance typically translates to extended travel times, often involving connections.

A typical journey from London to Seattle takes about 10h 16m, including connections. Given that most itineraries connect at least once, this duration reflects the overall travel experience. Only 12.8% of recent fares are for direct flights from London to Seattle, meaning most itineraries connect at least once, with a typical connecting itinerary involving 2 stopovers.

How much is a round trip from London to Seattle

Regular price: £539 - £938

Prices are currently below the regular range for flights from London to Seattle.

The regular price range for flights from London to Seattle is typically between 539 GBP and 938 GBP. The current lowest deal is 431 GBP on Kayak, for travel from Oct 23-Oct 24.

now £431

Low £539

High £938

The cheapest time to fly from London to Seattle

The cheapest month to fly from London to Seattle is March, with a median price of $511. The most expensive month is June, with a median price of $1299. Generally, prices are lower from January to November.

March

Cheapest

Flights from £511

June

Most Expensive

Flights from £1,299

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Direct flights from London to Seattle

British Airways

Last-minute flights going from London to Seattle

Tue, Sep 1

⌛ Last-Minute

LHR - Seattle

London (LHR) - Seattle (SEA)

Icelandair

£544

£455

One-way

Tue, Sep 1

⌛ Last-Minute

LGW - Seattle

London (LGW) - Seattle (SEA)

Icelandair

£469

£468

One-way

Fri, Sep 4

⌛ Last-Minute

LGW - Seattle

London (LGW) - Seattle (SEA)

Icelandair

£473

£465

One-way

Mon, Sep 7

⌛ Last-Minute

LHR - Seattle

London (LHR) - Seattle (SEA)

Icelandair

£561

£453

One-way

Mon, Sep 7

⌛ Last-Minute

LHR - Seattle

London (LHR) - Seattle (SEA)

Icelandair

£564

£459

One-way

Tue, Sep 8

⌛ Last-Minute

LHR - Seattle

London (LHR) - Seattle (SEA)

Icelandair

£552

£451

One-way

Biggest price drops on these dates for flights from London to Seattle

3 nights

Dec 10 - Dec 13

£1,141 → £768

33%

1 night

Dec 10 - Dec 11

£743 → £458

38%

14 nights

Dec 15 - Dec 29

£756 → £486

36%

15 nights

Dec 14 - Dec 29

£752 → £488

35%

Popular Airports to fly from London to Seattle

London - Seattle route insights

💸 Price insights

Recent fares are near the typical level

Recent fares from London to Seattle are near the typical level, with a median price of $1091.

📅 Best time to fly

Fly in March for the best prices

Historically, March is the cheapest month to fly from London to Seattle, with a median price of $511.

⏱️ Flight duration

Direct flights take 10h 16m

The typical direct flight from London to Seattle takes 10h 16m, while connecting flights average 22h 20m.

✈️ Airlines & availability

Connecting flights are dominant

Only 12.8% of recent flights from London to Seattle are direct, with connecting flights being more common.

🏆 Airline highlight

British Airways offers direct flights

British Airways is one of the airlines that offers direct flights from London to Seattle.

🎯 Booking tip

Deals are frequent on this route

Deals for flights from London to Seattle are frequent, appearing often over a 30-day window.

London main airports to depart from

Heathrow (LHR)

Cheapest

Heathrow is a major international airport offering many flight options from London to Seattle.

📍 ~23 km from London city center (reachable by car or train)

💸 Flights from ~£434

Seattle main airports to arrive at

Seattle–Tacoma International (SEA)

Cheapest

Seattle–Tacoma International is a key arrival airport for flights from London to Seattle.

📍 ~18 km from city center (reachable by car)

💸 Flights from ~£434

Airports nearby Seattle used as alternative

Paine Field Everett (PAE)

Paine Field Everett is a practical alternative for travelers in North Seattle or Snohomish County.

📍 ~40 km from Seattle (reachable by car)

💸 Flights from ~£693

Business & First Class Flight Deals to Seattle

91% AI deal score

$4,062

$2,752

Save $1,310

Frequently Asked Questions About Flights to Seattle

Historically, the optimal booking window for flights from London to Seattle is 7-13 days before departure. During this period, the average price is around $1000. Booking within 0-6 days of departure typically sees prices rise to approximately $1398. For travelers planning further ahead, prices for bookings made 60+ days out average $1145, while those made 14-27 days in advance are about $1249.

Across the trailing quarter, a good price for a flight from London to Seattle is considered to be $874 or less. The median price for this route has historically been around $1091. Prices tend to increase, with 75% of fares being $1350 or less. These price insights are based on data collected over a 90-day window.

Historically, January is the most affordable month to fly from London to Seattle, with a median price of $536. November also offers competitive prices, with a median of $754. May is another favorable month, showing a median price of $797. The annual median price for this route is typically around $1091, based on data from a 270-day window.

Related routes

More routes from London

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Flights to Seattle from other cities

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London to Seattle: Overview

Insights for flights from London to Seattle

How much is a round trip from London to Seattle

Regular price: £539 - £938

Prices are currently below the regular range for flights from London to Seattle.

The regular price range for flights from London to Seattle is typically between 539 GBP and 938 GBP. The current lowest deal is 431 GBP on Kayak, for travel from Oct 23-Oct 24.

now £431

Low £539

High £938

The cheapest time to fly from London to Seattle

March

Cheapest

Flights from £511

June

Most Expensive

Flights from £1,299

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec