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

Across the trailing quarter, approximately 11.6% of flights from London to Seattle are non-stop. For flights that include stopovers, travelers typically experience a median of 2 connections. This indicates that direct routes are less common, and many journeys will involve at least one intermediate stop.

How long is the flight from London to Seattle?

A direct flight from London to Seattle typically takes around 10 hours and 18 minutes. For flights with one stop, the median duration extends to approximately 16 hours and 51 minutes. The direct route covers an aerial distance of 7702 kilometers, making it a significant transatlantic journey.

How often do cheap flights from London to Seattle come up?

Cheap flights from London to Seattle are classified as frequent. This indicates that opportunities for finding deals on this route appear regularly. Travelers can typically expect to find favorable pricing options with some consistency.

Flights From London

To Seattle

Cheap Flights from London to Seattle

Browse current best options from London. Become a member to unlock all deals and get alerts when new deals appear.

Deals from

London

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

Prices updated today

485 airlines compared

80%+ AI score for best value

Fares are subject to change and may not be available for all dates. (Data last updated Nov 2, 2026.)

Today’s best flight deals from London to Seattle

Explore current cheapest deals departing from London to Seattle

2026-11-06 – 2026-11-08
LON - Seattle
93% AI deal score
£569
£339
Round trip
2026-12-05 – 2026-12-08
LON - Seattle
91% AI deal score
£686
£348
Round trip
2027-04-13 – 2027-04-20
LON - Seattle
92% AI deal score
£500
£349
Round trip
2027-04-23 – 2027-04-26
LON - Seattle
93% AI deal score
£543
£352
Round trip
2027-02-05 – 2027-02-08
LON - Seattle
90% AI deal score
£445
£354
Round trip
2027-02-08 – 2027-02-21
LON - Seattle
89% AI deal score
£423
£354
Round trip
2027-03-10 – 2027-03-14
LON - Seattle
91% AI deal score
£461
£354
Round trip
2026-11-25 – 2026-11-29
LON - Seattle
91% AI deal score
£510
£359
Round trip
2026-11-19 – 2026-11-30
LON - Seattle
90% AI deal score
£455
£366
Round trip
2026-12-03 – 2026-12-06
LON - Seattle
94% AI deal score
£685
£366
Round trip

London to Seattle: Overview

Insights for flights from London to Seattle

Flights from London to Seattle typically range from $821–$1316, with a median fare of $1059. Right now, fares are near the typical level for this route. Finding cheap flights from London to Seattle can be challenging, as currently 0% of recent fares were classified as a good price.

When considering the cheapest time to fly from London to Seattle, May stands out with a median fare of $904. November is also a more affordable option, with a median fare of $921, followed by February at $944.

A typical journey from London to Seattle takes about 10h 18m, including connections. Most itineraries connect at least once, with only 11.6% 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 km, classifying this as a long-haul route. This considerable distance means that itineraries often involve significant travel time and planning.

How much is a round trip from London to Seattle

Regular price: £574 - £1,197

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

Regular prices for this route typically range from 574 GBP to 1197 GBP. The current lowest deal is 347 GBP with Icelandair, for travel from Dec 5-Dec 8.

now £347

Low £574

High £1,197

The cheapest time to fly from London to Seattle

The cheapest month to fly from London to Seattle is November, with a median price of $896. The most expensive month is March, with a median price of $1437. Prices are generally lower from February to November.

November

Cheapest

Flights from £896

March

Most Expensive

Flights from £1,437

Jan

Feb

Mar

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, Nov 4

⌛ Last-Minute

LHR - Seattle

London (LHR) - Seattle (SEA)

KLM

£530

£394

One-way

Thu, Nov 5

⌛ Last-Minute

LHR - Seattle

London (LHR) - Seattle (SEA)

Icelandair

£461

£335

One-way

Thu, Nov 5

⌛ Last-Minute

LHR - Seattle

London (LHR) - Seattle (SEA)

Icelandair

£472

£371

One-way

Thu, Nov 5

⌛ Last-Minute

LHR - Seattle

London (LHR) - Seattle (SEA)

Icelandair

£526

£375

One-way

Thu, Nov 5

⌛ Last-Minute

LHR - Seattle

London (LHR) - Seattle (SEA)

KLM

£555

£394

One-way

Thu, Nov 5

⌛ Last-Minute

LHR - Everett

London (LHR) - Everett (PAE)

Finnair

£988

£560

One-way

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

3 nights

Dec 5 - Dec 8

£685 → £348

49%

3 nights

Dec 3 - Dec 6

£685 → £373

46%

4 nights

Dec 4 - Dec 8

£685 → £375

45%

5 nights

Dec 3 - Dec 8

£671 → £373

44%

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 of $1059.

📅 Best time to fly

Fly in May for prices around $904.

Historically, May, November, and February offer the lowest median prices for this route.

⏱️ Flight duration

Direct flights take 10h 18m.

Connecting flights typically take 24h 55m, while direct flights average 10h 18m.

✈️ Airlines & availability

Connecting flights are dominant on this route.

Only 11.6% of recent flights from London to Seattle are direct, with 2 stopovers typical.

🏆 Airline highlight

Alaska Airlines, Inc. offers direct flights.

Alaska Airlines, Inc. is one airline that offers direct flights on this route.

🎯 Booking tip

Deals appear frequently for this route.

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

London main airports to depart from

Gatwick (LGW)

Cheapest

Gatwick offers flights to Seattle, providing a convenient option for your journey from London.

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

💸 Flights from ~£338

Heathrow (LHR)

Heathrow is a major hub for flights to Seattle, offering extensive connections from London.

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

💸 Flights from ~£345

London City (LCY)

London City Airport provides a close-to-city option for flights to Seattle from London.

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

💸 Flights from ~£624

London Southend (SEN)

London Southend offers an alternative departure point for flights to Seattle from London.

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

💸 Flights from ~£561

London Stansted (STN)

London Stansted is a good choice for flights to Seattle, serving the London area.

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

💸 Flights from ~£496

Luton (LTN)

Luton Airport provides another option for flights to Seattle, serving the London region.

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

💸 Flights from ~£514

Seattle main airports to arrive at

Seattle–Tacoma International (SEA)

Cheapest

Seattle–Tacoma International Airport is a primary arrival option for flights to Seattle from London.

📍 ~18 km from Seattle (reachable by car)

💸 Flights from ~£348

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 ~£710

Business & First Class Flight Deals to Seattle

Discover luxury on the budget with premium cabin class on flights from London to Seattle.

Elite

Best Elite deals to Seattle

Exclusive daily First Class, Business Class, and Premium Economy flight deals, refreshed every 24 hours.

From LHR

Elite

Dec 25

Seattle, United States

93% AI deal score

$3,910

$2,360

Save $1,550

Scandinavian Airlines, +1

Business Class

From LHR

Elite

Apr 05

Seattle, United States

92% AI deal score

$3,446

$2,351

Save $1,095

Icelandair

Business Class

From LHR

Elite

Apr 11

Seattle, United States

92% AI deal score

$3,471

$2,394

Save $1,077

Icelandair

Business Class

From LHR

Elite

Dec 25

Seattle, United States

92% AI deal score

$3,867

$2,402

Save $1,465

Scandinavian Airlines, +1

Business Class

From LHR

Elite

Dec 25

Seattle, United States

92% AI deal score

$3,878

$2,410

Save $1,468

Scandinavian Airlines, +1

Business Class

From LHR

Elite

Dec 25

Seattle, United States

92% AI deal score

$3,859

$2,432

Save $1,427

Scandinavian Airlines, +1

Business Class

From LGW

Elite

Apr 06

Seattle, United States

91% AI deal score

$3,007

$2,303

Save $704

Icelandair

Business Class

From LHR

Elite

Dec 16

Seattle, United States

91% AI deal score

$3,832

$2,600

Save $1,232

Icelandair

Business Class

From LHR

Elite

Dec 16

Seattle, United States

91% AI deal score

$3,735

$2,600

Save $1,135

Icelandair

Business Class

From LHR

Elite

Dec 02

Seattle, United States

91% AI deal score

$3,681

$2,601

Save $1,080

Icelandair

Business Class

From LHR

Elite

Mar 10

Seattle, United States

91% AI deal score

$3,427

$2,602

Save $825

Icelandair

Business Class

From LHR

Elite

Dec 21

Seattle, United States

91% AI deal score

$3,869

$2,602

Save $1,267

Icelandair

Business Class

Frequently Asked Questions About Flights to Seattle

Historically, the best time to book flights from London to Seattle is 60+ days before departure. Flights booked within this window typically have an average price of $1092. In contrast, booking within 0-6 days of departure sees the average price rise to $1606. For optimal savings, consider securing your tickets more than two months in advance.

A good price for a flight from London to Seattle is considered to be $821 or less. This threshold is based on pricing data observed across the trailing 90 days. The median price for this route historically stands at $1059, with 75% of prices being $1316 or less. Aiming for prices at or below $821 can represent a significant saving.

Historically, May is often the best month to fly from London to Seattle, with a median price of $904. November and February also offer competitive prices, with median fares around $921 and $944 respectively. The annual median price for this route is $1059, so flying in these months can offer savings compared to the yearly average.

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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: £574 - £1,197

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

Regular prices for this route typically range from 574 GBP to 1197 GBP. The current lowest deal is 347 GBP with Icelandair, for travel from Dec 5-Dec 8.

now £347

Low £574

High £1,197

The cheapest time to fly from London to Seattle

November

Cheapest

Flights from £896

March

Most Expensive

Flights from £1,437

Jan

Feb

Mar

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, Nov 4

⌛ Last-Minute

LHR - Seattle

London (LHR) - Seattle (SEA)

KLM

£530

£394

One-way

Thu, Nov 5

⌛ Last-Minute

LHR - Seattle

London (LHR) - Seattle (SEA)

Icelandair

£461

£335

One-way

Thu, Nov 5

⌛ Last-Minute

LHR - Seattle

London (LHR) - Seattle (SEA)

Icelandair

£472

£371

One-way

Thu, Nov 5

⌛ Last-Minute

LHR - Seattle

London (LHR) - Seattle (SEA)

Icelandair

£526

£375

One-way

Thu, Nov 5

⌛ Last-Minute

LHR - Seattle

London (LHR) - Seattle (SEA)

KLM

£555

£394

One-way

Thu, Nov 5

⌛ Last-Minute

LHR - Everett

London (LHR) - Everett (PAE)

Finnair

£988

£560

One-way

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

3 nights

Dec 5 - Dec 8

£685 → £348

49%

3 nights

Dec 3 - Dec 6

£685 → £373

46%

4 nights

Dec 4 - Dec 8

£685 → £375

45%

5 nights

Dec 3 - Dec 8

£671 → £373

44%

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 of $1059.

📅 Best time to fly

Fly in May for prices around $904.

Historically, May, November, and February offer the lowest median prices for this route.

⏱️ Flight duration

Direct flights take 10h 18m.

Connecting flights typically take 24h 55m, while direct flights average 10h 18m.

✈️ Airlines & availability

Connecting flights are dominant on this route.

Only 11.6% of recent flights from London to Seattle are direct, with 2 stopovers typical.

🏆 Airline highlight

Alaska Airlines, Inc. offers direct flights.

Alaska Airlines, Inc. is one airline that offers direct flights on this route.

🎯 Booking tip

Deals appear frequently for this route.

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

London main airports to depart from

Gatwick (LGW)

Cheapest

Gatwick offers flights to Seattle, providing a convenient option for your journey from London.

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

💸 Flights from ~£338

Heathrow (LHR)

Heathrow is a major hub for flights to Seattle, offering extensive connections from London.

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

💸 Flights from ~£345

London City (LCY)

London City Airport provides a close-to-city option for flights to Seattle from London.

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

💸 Flights from ~£624

London Southend (SEN)

London Southend offers an alternative departure point for flights to Seattle from London.

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

💸 Flights from ~£561

London Stansted (STN)

London Stansted is a good choice for flights to Seattle, serving the London area.

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

💸 Flights from ~£496

Luton (LTN)

Luton Airport provides another option for flights to Seattle, serving the London region.

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

💸 Flights from ~£514

Seattle main airports to arrive at

Seattle–Tacoma International (SEA)

Cheapest

Seattle–Tacoma International Airport is a primary arrival option for flights to Seattle from London.

📍 ~18 km from Seattle (reachable by car)

💸 Flights from ~£348

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.

Seattle, United States

91% AI deal score

$3,869

$2,602

Save $1,267

Icelandair

Business Class

Frequently Asked Questions About Flights to Seattle

Cheap Flights from London to Seattle

Today’s best flight deals from London to Seattle

London to Seattle: Overview

Insights for flights from London to Seattle

How much is a round trip from London to Seattle

The cheapest time to fly from London to Seattle

Direct flights from London to Seattle

Last-minute flights going from London to Seattle

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

Popular Airports to fly from London to Seattle

London - Seattle route insights

Recent fares are near the typical level.

Fly in May for prices around $904.

Direct flights take 10h 18m.

Connecting flights are dominant on this route.

Alaska Airlines, Inc. offers direct flights.

Deals appear frequently for this route.

London main airports to depart from

Seattle main airports to arrive at

Airports nearby Seattle used as alternative

Business & First Class Flight Deals to Seattle

Best Elite deals to Seattle

Dec 25

Apr 05

Apr 11

Dec 25

Dec 25

Dec 25

Apr 06

Dec 16

Dec 16

Dec 02

Mar 10

Dec 21

Frequently Asked Questions About Flights to Seattle

When is the best time to book flights from London to Seattle?

What is a good price for a flight from London to Seattle?

What's the best month to fly from London to Seattle?

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

How long is the flight from London to Seattle?

How often do cheap flights from London to Seattle come up?

Related routes

More routes from London

Flights to Seattle from other cities

London to Seattle: Overview

Insights for flights from London to Seattle

How much is a round trip from London to Seattle

The cheapest time to fly from London to Seattle

Direct flights from London to Seattle

Last-minute flights going from London to Seattle

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

Popular Airports to fly from London to Seattle

London - Seattle route insights

Recent fares are near the typical level.

Fly in May for prices around $904.

Direct flights take 10h 18m.

Connecting flights are dominant on this route.

Alaska Airlines, Inc. offers direct flights.

Deals appear frequently for this route.

London main airports to depart from

Seattle main airports to arrive at

Airports nearby Seattle used as alternative

Business & First Class Flight Deals to Seattle

Best Elite deals to Seattle

Dec 25

Apr 05

Apr 11

Dec 25

Dec 25

Dec 25

Apr 06

Dec 16

Dec 16

Dec 02

Mar 10

Dec 21

Frequently Asked Questions About Flights to Seattle

When is the best time to book flights from London to Seattle?

What is a good price for a flight from London to Seattle?

What's the best month to fly from London to Seattle?