Are there direct flights from Seattle to London?

In the trailing 90 days, approximately 9.8% of flights from Seattle to London were direct. For travelers opting for connecting flights, the median number of stopovers was 2. While direct options are available, a significant portion of routes typically include at least one stop.

How long does it take to fly from Seattle to London?

A direct flight from Seattle to London typically takes about 9 hours and 50 minutes, covering a distance of 7695 kilometers. Flights with one stop generally have a median duration of 15 hours and 33 minutes. The additional travel time for a single-stop journey is approximately 5 hours and 43 minutes compared to a direct route.

Are there frequently good prices on flights from Seattle to London?

Historically, flights from Seattle to London have frequently offered good prices. This route is classified as one that regularly presents favorable deals. Travelers can often find competitive pricing for this destination across the trailing quarter.

Flights From Seattle

To London

Cheap Flights from Seattle to London

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

Deals from

Seattle

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

Prices updated 7 days ago

483 airlines compared

80%+ AI score for best value

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

Today’s best flight deals from Seattle to London

Explore current cheapest deals departing from Seattle to London

2026-12-07 – 2026-12-14
SEA - London
90% AI deal score
$864
$542
Round trip
2026-11-16 – 2026-11-24
SEA - London
82% AI deal score
$655
$546
Round trip
2027-01-13 – 2027-01-18
SEA - London
88% AI deal score
$747
$562
Round trip
2027-01-10 – 2027-01-19
SEA - London
81% AI deal score
$715
$596
Round trip
2027-01-13 – 2027-01-20
SEA - London
87% AI deal score
$751
$603
Round trip
2026-12-08 – 2026-12-15
SEA - London
91% AI deal score
$857
$606
Round trip
2026-11-17 – 2026-11-24
SEA - London
79% AI deal score
$671
$610
Round trip
2027-01-12 – 2027-01-20
SEA - London
79% AI deal score
$717
$623
Round trip
2027-03-15 – 2027-03-19
SEA - London
90% AI deal score
$838
$626
Round trip
2026-11-10 – 2026-11-19
SEA - London
77% AI deal score
$655
$629
Round trip

Seattle to London: Overview

Insights for flights from Seattle to London

Most itineraries for flights from Seattle to London connect at least once, with only 9.8% of recent fares being non-stop. For connecting itineraries, the typical number of stopovers is 2. This means that while direct flights from Seattle to London are available, you will most often find options that include at least one stop.

When looking for cheap flights from Seattle to London, fares typically range from $931–$1411, with a median price of $1137. Right now, current fares are above the typical level. There are currently no recent fares classified as a good price, indicating a less favorable pricing environment at present.

To find the cheapest time to fly from Seattle to London, consider traveling in January, which has a median fare of $847. May is also a more affordable option, with a median fare of $851. February follows as another relatively cheaper month, showing a median fare of $994.

A typical journey from Seattle to London takes about 9h 50m, including connections. This median duration accounts for the prevalence of connecting flights on this route. For those itineraries that do connect, the median travel time is significantly longer, at 20h 15m, while non-stop flights have a median duration of 9h 50m.

The distance between Seattle and London is approximately 7695 km, classifying this as a long-haul route. This considerable distance contributes to the longer flight times and the common occurrence of connecting itineraries.

How much is a round trip from Seattle to London

Regular price: $715 - $1,999

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

The regular price range for flights from Seattle to London is typically between $715 and $1999. The current lowest deal is $542 with Icelandair, for travel from December 7 to December 14.

now $542

Low $715

High $1,999

The cheapest time to fly from Seattle to London

The cheapest month to fly from Seattle to London is May, with a median price of $851. The most expensive month is June, with a median price of $1489. Prices are generally lower from January to October.

May

Cheapest

Flights from $851

June

Most Expensive

Flights from $1,489

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Direct flights from Seattle to London

Alaska Airlines, Inc.

Last-minute flights going from Seattle to London

Wed, Oct 28

⌛ Last-Minute

SEA - London

Seattle (SEA) - London (LHR)

Air Canada

$1,021

$1,043

One-way

Sun, Nov 1

⌛ Last-Minute

SEA - London

Seattle (SEA) - London (LHR)

Deutsche Luft Hansa

$959

$1,014

One-way

Mon, Nov 2

⌛ Last-Minute

SEA - London

Seattle (SEA) - London (LGW)

Condor Flugdienst

$708

$849

One-way

Mon, Nov 2

⌛ Last-Minute

SEA - London

Seattle (SEA) - London (LHR)

Alaska Airlines, Inc.

$770

$996

One-way

Tue, Nov 3

⌛ Last-Minute

SEA - London

Seattle (SEA) - London (LGW)

Air Canada

$706

$670

One-way

Tue, Nov 3

⌛ Last-Minute

SEA - London

Seattle (SEA) - London (LGW)

Condor Flugdienst

$670

$869

One-way

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

7 nights

Dec 7 - Dec 14

$864 → $542

37%

7 nights

Dec 8 - Dec 15

$857 → $608

29%

8 nights

Dec 7 - Dec 15

$831 → $599

28%

5 nights

Feb 10 - Feb 15

$864 → $635

26%

Popular Airports to fly from Seattle to London

Seattle - London route insights

💸 Price insights

Recent fares are above the typical level

Recent fares for Seattle to London are above the typical level, with a median price of $1137.

📅 Best time to fly

January is historically cheapest at $847

Historically, January is the cheapest month to fly from Seattle to London, with a median price of $847.

⏱️ Flight duration

Direct flights take 9h 50m

Direct flights from Seattle to London typically take 9h 50m, connecting flights take 20h 15m.

✈️ Airlines & availability

Connecting flights are dominant

Connecting flights are dominant for this route, with a median of 2 stopovers when connecting.

🏆 Airline highlight

Alaska Airlines offers direct flights

Alaska Airlines, Inc. offers direct flights on this route, with 1 direct deal available.

🎯 Booking tip

Deals are frequent

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

Seattle main airports to depart from

Seattle–Tacoma International (SEA)

Cheapest

Fly from Seattle–Tacoma International for convenient departures to London.

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

💸 Flights from ~$575

London main airports to arrive at

Gatwick (LGW)

Cheapest

Gatwick is a good option for flights from Seattle to London, offering competitive prices.

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

💸 Flights from ~$575

Airports nearby London used as alternative

Birmingham (BHX)

Cheapest

Birmingham Airport is a major international hub with excellent rail connectivity to London Euston.

📍 ~160 km from London (reachable by train)

💸 Flights from ~$741

Business & First Class Flight Deals to London

94% AI deal score

$21,638

$7,900

Save $13,738

Frequently Asked Questions About Flights to London

Historically, the lowest average prices for flights from Seattle to London are found when booking 60+ days in advance. Across the trailing quarter, the average price for flights booked within this window was $1211. In contrast, booking 0-6 days before departure typically resulted in a higher average price of $1312. Prices generally increase as the departure date approaches, with flights booked 7-13 days out averaging $1499.

Based on historical data from the trailing 90 days, a good price for a flight from Seattle to London is considered to be $931 or less. The median price for this route across the same period was $1137. Prices above $1411 typically fall into the higher end of the spectrum for this route.

Historically, January has been one of the cheapest months to fly from Seattle to London, with a median price of $847. May also offered favorable prices, with a median of $851. The annual median price for this route across the trailing 270 days was $1137, indicating that these months can offer significant savings compared to the yearly average.

Related routes

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Flights to London from other cities

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Seattle to London: Overview

Insights for flights from Seattle to London

How much is a round trip from Seattle to London

Regular price: $715 - $1,999

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

The regular price range for flights from Seattle to London is typically between $715 and $1999. The current lowest deal is $542 with Icelandair, for travel from December 7 to December 14.

now $542

Low $715

High $1,999

The cheapest time to fly from Seattle to London

May

Cheapest

Flights from $851

June

Most Expensive

Flights from $1,489

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec