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 that include 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. This data reflects historical trends over a three-month period.

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, have a significantly longer median duration, averaging around 16 hours and 30 minutes. This represents a substantial difference in travel time for connecting routes 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 approximately 21% more expensive than connecting flights. The median price for a direct flight is $1262, while flights with connections have a median price of $1046. Non-stop options account for about 13.3% of the available flights. Travelers may consider the time saved against the premium when deciding between direct and connecting routes.

Flights From London

To Seattle

Cheap Flights from London to Seattle

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Deals from

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Prices updated 1 day ago

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Fares are subject to change and may not be available for all dates. (Data last updated Sep 14, 2026.)

Today’s best flight deals from London to Seattle

Explore current cheapest deals departing from London to Seattle

2026-12-04 – 2026-12-07
LON - Seattle
91% AI deal score
£626
£324
Round trip
2026-12-09 – 2026-12-15
LON - Seattle
92% AI deal score
£659
£325
Round trip
2026-12-04 – 2026-12-13
LON - Seattle
91% AI deal score
£640
£325
Round trip
2026-11-23 – 2026-11-29
LON - Seattle
92% AI deal score
£483
£325
Round trip
2027-01-13 – 2027-01-19
LON - Seattle
93% AI deal score
£519
£325
Round trip
2026-12-13 – 2026-12-27
LON - Seattle
94% AI deal score
£601
£331
Round trip
2026-11-22 – 2026-11-28
LON - Seattle
92% AI deal score
£483
£333
Round trip
2026-12-09 – 2026-12-14
LON - Seattle
94% AI deal score
£619
£334
Round trip
2026-11-04 – 2026-11-15
LON - Seattle
91% AI deal score
£451
£337
Round trip
2027-02-03 – 2027-02-10
LON - Seattle
90% AI deal score
£428
£338
Round trip

London to Seattle: Overview

Insights for flights from London to Seattle

For flights from London to Seattle, fares typically range from $874 to $1350, with a median price of $1091. Right now, fares are near the typical level for this route. Currently, 0% of recent fares are classified as a good price, indicating that finding significantly discounted tickets may require careful timing.

If you are looking for cheap flights from London to Seattle, the cheapest months to fly are January, with a median fare of $536, and November, where the median fare is $754. May also offers more competitive pricing, with a median fare of $797.

A typical journey from London to Seattle takes about 10h 16m, including connections. Most itineraries on this route connect at least once, with only 12.8% of recent fares being direct flights from London to Seattle. For connecting flights, the median number of stopovers is 2.

The distance between London and Seattle is 7702 kilometers, classifying this as a long-haul route. This means you can expect a significant travel duration, often involving multiple time zones.

How much is a round trip from London to Seattle

Regular price: £434 - £812

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

The regular price range for flights from London to Seattle is typically between 434 GBP and 812 GBP. The current lowest deal is 343 GBP with Icelandair, for travel from Oct 13-Oct 26.

now £343

Low £434

High £812

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. Prices are generally 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

Alaska Airlines, Inc.

Last-minute flights going from London to Seattle

Wed, Sep 23

⌛ Last-Minute

LHR - Seattle

London (LHR) - Seattle (SEA)

Icelandair

£637

£391

One-way

Wed, Sep 23

⌛ Last-Minute

LHR - Seattle

London (LHR) - Seattle (SEA)

Icelandair

£670

£393

One-way

Thu, Sep 24

⌛ Last-Minute

LHR - Seattle

London (LHR) - Seattle (SEA)

Icelandair

£665

£391

One-way

Fri, Sep 25

⌛ Last-Minute

LHR - Seattle

London (LHR) - Seattle (SEA)

Alaska Airlines, Inc.

£633

£387

One-way

Thu, Oct 1

⌛ Last-Minute

LGW - Seattle

London (LGW) - Seattle (SEA)

Icelandair

£470

£347

One-way

Fri, Oct 2

⌛ Last-Minute

LHR - Seattle

London (LHR) - Seattle (SEA)

Lufthansa

£624

£404

One-way

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

4 nights

Sep 24 - Sep 28

£670 → £389

42%

4 nights

Sep 23 - Sep 27

£668 → £391

41%

3 nights

Sep 25 - Sep 28

£669 → £416

38%

5 nights

Dec 24 - Dec 29

£675 → £422

38%

Popular Airports to fly from London to Seattle

London - Seattle route insights

💸 Price insights

Recent fares near the typical level

Recent fares from London to Seattle are near the typical level of $1091.

📅 Best time to fly

January is historically cheapest

Historically, January is the cheapest month to fly to Seattle, with a median price of $536.

⏱️ Flight duration

Direct flights average 10h 16m

Direct flights to Seattle typically take 10h 16m, while connecting flights average 22h 20m.

✈️ Airlines & availability

Connecting flights are dominant

Connecting flights are dominant on this route, with 2 stopovers being typical.

🏆 Airline highlight

Alaska Airlines offers direct flights

Alaska Airlines, Inc. offers direct flights from London to Seattle.

🎯 Booking tip

Deals are frequent

Deals on flights from London to Seattle are frequent, appearing often over 30 days.

London main airports to depart from

Heathrow (LHR)

Cheapest

London Heathrow is a convenient option for flights from London to Seattle, offering the cheapest prices.

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

💸 Flights from ~£300

Gatwick (LGW)

London Gatwick is an alternative departure airport for flights from London to Seattle.

📍 ~40 km from London city center (reachable by car or train)

💸 Flights from ~£307

London City (LCY)

London City is a closer departure airport for your trip from London to Seattle.

📍 ~13 km from London city center (reachable by car or train)

💸 Flights from ~£404

London Southend (SEN)

London Southend is an option for flights from London to Seattle.

📍 ~57 km from London city center (reachable by car or train)

💸 Flights from ~£599

London Stansted (STN)

London Stansted is an alternative departure airport for flights from London to Seattle.

📍 ~49 km from London city center (reachable by car or train)

💸 Flights from ~£406

Luton (LTN)

Luton is an option for flights from London to Seattle.

📍 ~44 km from London city center (reachable by car or train)

💸 Flights from ~£441

Seattle main airports to arrive at

Seattle–Tacoma International (SEA)

Cheapest

Seattle–Tacoma International Airport is a good arrival choice for flights from London to Seattle.

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

💸 Flights from ~£309

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 ~£627

Business & First Class Flight Deals to Seattle

$2,361

Save $2,073

Icelandair

Business Class

Frequently Asked Questions About Flights to Seattle

Historically, the optimal booking window for flights from London to Seattle is typically 7-13 days before departure. During this period, the average price for a flight is around $1000. Booking within 0-6 days of departure sees the average price increase to approximately $1398. For travelers planning further ahead, booking 60+ days out has an average price of $1145, while prices for bookings made 14-27 days in advance average $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 over the same period was $1091. Prices can vary, with 75% of fares historically observed at $1350 or less. This threshold is based on pricing trends observed 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 pricing, with a median of $754. May, while also listed among the cheapest, had a median price of $797, which was also the most expensive month on average. The annual median price for this route is $1091, based on data collected over 270 days.

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

The distance between London and Seattle is 7702 kilometers, classifying this as a long-haul route. This means you can expect a significant travel duration, often involving multiple time zones.

How much is a round trip from London to Seattle

Regular price: £434 - £812

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

The regular price range for flights from London to Seattle is typically between 434 GBP and 812 GBP. The current lowest deal is 343 GBP with Icelandair, for travel from Oct 13-Oct 26.

now £343

Low £434

High £812

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