Are there direct flights from Seattle to London?

In the trailing 90 days, approximately 12.4% of flights from Seattle to London were direct. For flights that included stopovers, the median number of stopovers was 2. This indicates that while direct options are available, a significant portion of routes involve connections. Travelers should factor in the possibility of connecting flights when planning their journey.

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

The typical direct flight from Seattle to London has a median duration of 9 hours and 30 minutes. For flights with one stop, the median travel time extends to 14 hours and 40 minutes. The distance covered on this route is approximately 7695 kilometers. Travelers should account for these differences in flight duration when making their travel plans.

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

Historically, good prices on flights from Seattle to London have been frequent. This route is classified as one with regular opportunities for favorable fares. Travelers can typically find competitive pricing when planning their trips. This consistent availability of good prices makes it a popular route for deal seekers.

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 1 day ago

462 airlines compared

80%+ AI score for best value

Fares are subject to change and may not be available for all dates. (Data last updated Sep 15, 2026.)

Today’s best flight deals from Seattle to London

Explore current cheapest deals departing from Seattle to London

2026-10-16 – 2026-10-20
SEA - London
91% AI deal score
$726
$437
Round trip
2026-10-18 – 2026-10-27
SEA - London
89% AI deal score
$669
$484
Round trip
2026-11-15 – 2026-11-22
SEA - London
90% AI deal score
$737
$491
Round trip
2026-10-16 – 2026-10-26
SEA - London
88% AI deal score
$667
$496
Round trip
2026-11-12 – 2026-11-18
SEA - London
89% AI deal score
$673
$498
Round trip
2026-10-19 – 2026-10-27
SEA - London
88% AI deal score
$673
$504
Round trip
2026-10-16 – 2026-10-27
SEA - London
87% AI deal score
$665
$505
Round trip
2026-11-17 – 2026-11-20
SEA - London
89% AI deal score
$696
$517
Round trip
2026-11-18 – 2026-11-24
SEA - London
88% AI deal score
$737
$534
Round trip
2026-10-14 – 2026-10-20
SEA - London
86% AI deal score
$696
$547
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 12.4% of recent fares being non-stop. For connecting itineraries, the typical number of stopovers is 2. New deals appear almost daily, offering frequent opportunities to find cheap flights from Seattle to London.

Right now, fares to London from Seattle are typically $841–$1279, with a median of $1020. Current fares are near the typical level for this route. Only 4% of recent fares were classified as a good price.

When is the cheapest time to fly from Seattle to London? You'll find the most affordable options in February, with a median fare of $482. Other economical months include April, with a median of $583, and March, where the median fare is $605.

A typical journey from Seattle to London takes about 9h 30m, including connections. This is a long-haul route, covering a distance of 7695 km.

How much is a round trip from Seattle to London

Regular price: $621 - $1,611

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 $621 and $1611. The current lowest deal is $437 with Icelandair for travel from Oct 16-Oct 20.

now $437

Low $621

High $1,611

The cheapest time to fly from Seattle to London

The cheapest month to fly from Seattle to London is February, with a median price of $376. The most expensive month is July, with a median price of $1221. Prices are generally lower from February to December.

February

Cheapest

Flights from $376

July

Most Expensive

Flights from $1,221

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Direct flights from Seattle to London

British Airways

Last-minute flights going from Seattle to London

Mon, Sep 21

⌛ Last-Minute

SEA - London

Seattle (SEA) - London (LHR)

Alaska Airlines, Inc.

$941

$731

One-way

Tue, Sep 22

⌛ Last-Minute

SEA - London

Seattle (SEA) - London (STN)

Air Canada

$969

$642

One-way

Sun, Sep 27

⌛ Last-Minute

SEA - London

Seattle (SEA) - London (STN)

Aer Lingus

$1,038

$650

One-way

Sun, Sep 27

⌛ Last-Minute

SEA - London

Seattle (SEA) - London (LTN)

Aer Lingus

$1,163

$680

One-way

Mon, Oct 5

⌛ Last-Minute

SEA - London

Seattle (SEA) - London (STN)

Air Canada

$743

$560

One-way

Mon, Oct 12

⌛ Last-Minute

SEA - London

Seattle (SEA) - London (STN)

Icelandair

$659

$577

One-way

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

3 nights

Sep 27 - Sep 30

$1,145 → $684

40%

2 nights

Sep 27 - Sep 29

$1,021 → $654

36%

5 nights

Feb 16 - Feb 21

$893 → $573

36%

8 nights

Feb 20 - Feb 28

$890 → $571

36%

Popular Airports to fly from Seattle to London

Seattle - London route insights

💸 Price insights

Recent fares are near the typical level

Recent fares from Seattle to London are near the typical level for this route.

📅 Best time to fly

February is historically cheapest at $482

Historically, February offers the lowest median prices at $482 for flights to London.

⏱️ Flight duration

Direct flights average 9h 30m

Direct flights from Seattle to London typically take 9h 30m, while connecting flights average 18h 0m.

✈️ Airlines & availability

Connecting flights are dominant

Connecting flights make up 87.6% of available routes, with a median of 2 stopovers.

🏆 Airline highlight

British Airways offers direct flights

British Airways is one of the airlines providing direct flight options on this route.

🎯 Booking tip

Deals are frequent on this route

Deals for 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

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

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

💸 Flights from ~$532

London main airports to arrive at

London Stansted (STN)

Cheapest

London Stansted is a good option for travelers seeking the cheapest flights to London.

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

💸 Flights from ~$513

Airports nearby London used as alternative

Birmingham (BHX)

Cheapest

Birmingham Airport is a major international hub offering a wide variety of routes, useful when London airports are congested.

📍 ~160 km from London (reachable by direct train)

💸 Flights from ~$606

Business & First Class Flight Deals to London

$2,990

Save $2,821

Icelandair

Business Class

Frequently Asked Questions About Flights to London

Historically, the lowest prices for flights from Seattle to London are found when booking 14-27 days in advance. During this period, the average price was $670. Booking 7-13 days out saw average prices rise to $1042, while booking 60+ days in advance typically resulted in an average price of $1136. Even booking 0-6 days before departure had a lower average price of $980 compared to booking more than 60 days out, indicating that last-minute deals can sometimes be found.

Across the trailing quarter, a good price for a flight from Seattle to London was considered to be $841 or less. The median price for this route was $1020. Prices typically ranged up to $1279 for the higher end of fares. Travelers aiming for a budget-friendly trip should target prices at or below the $841 threshold.

Historically, February has been the cheapest month to fly from Seattle to London, with a median price of $482. April also offered competitive prices, with a median of $583. In contrast, the annual median price for this route was $1020. Travelers looking for the most economical options should consider flying during these months.

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

A typical journey from Seattle to London takes about 9h 30m, including connections. This is a long-haul route, covering a distance of 7695 km.

How much is a round trip from Seattle to London

Regular price: $621 - $1,611

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 $621 and $1611. The current lowest deal is $437 with Icelandair for travel from Oct 16-Oct 20.

now $437

Low $621

High $1,611

The cheapest time to fly from Seattle to London

February

Cheapest

Flights from $376

July

Most Expensive

Flights from $1,221

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec