There are most likely no direct flights on the Seattle — London route
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The cost of a one-way flight from Seattle to London ranges from $253 (July 2026) to $451 (June 2026). On average, the ticket price is about $352–$451.
A non-stop flight is the most convenient and comfortable way to fly from Seattle to London, despite the fact that sometimes flights with transfers can cost significantly less.
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Answers to questions about the route that travelers are most interested in.
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There are most likely no direct flights on the Seattle — London route
Seattle — London
07/05/2026
Departure
Direct flight
BA052
starting at $830
Seattle — London
07/07/2026
Departure
Direct flight
BA48
starting at $868
Seattle — London
08/05/2026
Departure
Direct flight
BA052
starting at $463
Seattle — London
08/30/2026
Departure
Direct flight
BA052
starting at $786
Seattle — London
09/11/2026
Departure
Direct flight
AS100
starting at $396
Seattle — London
07/10/2026
Departure
Direct flight
BA052
starting at $863
Seattle — London
09/14/2026
Departure
Direct flight
BA052
starting at $775
Seattle — London
02/21/2027
Departure
Direct flight
IB3506
starting at $486
starting at $463
starting at $342
starting at $486
starting at $206
starting at $367
More than 5 airlines operate flights from Seattle to London, including British Airways, Alaska Airlines, Iberia, Icelandair, and Condor. This is a popular route, so passengers can choose tickets based on budget and preferences. Ticket prices start from $206, and our service lets you instantly compare all options. The variety of offers simplifies planning: you can choose budget fares or more comfortable options with baggage included or extra services. We help you find the best deals so your trip is cost-efficient.
The cheapest flight ticket from Seattle to London according to data for the last 48 hours costs $206
Often the best time to buy tickets from Seattle to London is 2 months before departure.
Based on statistics over the past years, the lowest prices for flights from Seattle to London can be found flying in these months: July, June.
The fastest flights from Seattle to London start from 11 hours 40 minutes in the air.
The following airlines operate direct flights on the route Seattle — London: British Airways, Alaska Airlines, Iberia
The cheapest one-way flight from Seattle to London departs on 08/30/2026, is operated by Icelandair and costs $206
The cheapest roundtrip flight from Seattle to London departs on 08/13/2026, is operated by United Airlines and costs $556
Fastest flight from Seattle to London takes 11h 40m
There are direct flights on this route 5 days a week: Su, Mo, Tu, We, and Fr
The distance between Seattle and London is 7706km (4778 miles). There are 8 direct flights from Seattle to London. The time difference between Seattle and London is 8h. Flights from Seattle begin at 1:30 PM. The latest flight from Seattle departs at 9:40 PM
Seattle is served primarily by Seattle–Tacoma International Airport (SEA), a major Pacific Northwest gateway that typically functions as the region’s main international and domestic hub and handles many full-service carriers alongside budget airlines. Located about 14 miles (roughly 20–40 minutes) south of downtown, SEA is usually reachable by Link light rail, airport shuttle, taxis or rideshares and rental cars; transit fares and shuttle costs can generally be modest while taxis/rideshares vary by traffic. A second option for some travelers is smaller Boeing Field (BFI) for charters and general aviation. SEA’s strengths are its wide route network and amenities; trade-offs can include busy terminals and variable security/traffic waits during peak periods.
London is served by several distinct airports, each catering to different types of travel. Heathrow is the main international hub used by legacy carriers and many long-haul services; it typically feels premium, is about 23 km west of central London, and is reachable by the Elizabeth Line or Heathrow Express in roughly 15–30 minutes (fares vary by service). Gatwick, a large international and charter airport south of the city, often hosts a mix of full-service and leisure airlines and is about 45 km away; trains to the city take around 30–40 minutes with a range of ticket prices. Stansted and Luton tend to be favored by low-cost carriers and budget-conscious travelers; both sit further out (roughly 50–65 km) with coach and airport rail options taking 45–70 minutes at typically lower fares. London City is the closest to the financial districts (about 11 km east of central London) and is commonly used for short-haul business flights, offering fast DLR and taxi links in around 20–30 minutes. Pros across the network include broad route choice and frequent transport links; cons can include congestion, variable transfer times and extra charges for budget carriers' add-ons.
We couldn't find any special offers for flights from Seattle to London
