Cheap flights from London to Seattle
4,786 mi · 45m average nonstop
We may earn a commission at no extra cost to you.
TripRoute is an affiliate partner — when you book via Kayak we may earn commission at no extra cost to you. See how it works.
Quick answer: London to Seattle at a glance
Cheap flights from London (LHR) to Seattle (SEA) cover 4,786 miles (7,700 km) in about 45m nonstop, with 8 airlines flying direct — a ultra-long-haul international route. Search Kayak for today's cheapest live fare. Route difficulty 9/10.
Summary computed from real OpenFlights coordinates — not an estimate. Prices update live on Kayak.
Flying from London to Seattle covers 4,786 miles (7,701 km) in approximately 0 hour 45 minutes. 8 airlines offer direct flights on this ultra-long-haul international route. This is a ultra-long-haul international route requiring advance planning for connections and layovers.
Nonstop distance 4,786 miles. Direct carriers include AA, AF, AY, BA, DL, IB, KL and VS.
We don't track historical prices for this route yet. Search live fares on Kayak for today's best price across 100+ airlines and booking sites.
Airlines on this route
8 airlines fly London → Seattle. All are direct routes.
| Airline | Route type |
|---|---|
| AA | Direct |
| AF | Direct |
| AY | Direct |
| BA | Direct |
| DL | Direct |
| IB | Direct |
| KL | Direct |
| VS | Direct |
Kayak can notify you when LHR → SEA fares drop — alerts are free on the same page you search and book.
Track it on Kayak — free price alertsSet alertTripRoute is an affiliate partner — when you book via Kayak we may earn commission at no extra cost to you. See how it works.
London to Seattle — quick answers
How far is London from Seattle by plane?
The nonstop flight distance from London (LHR) to Seattle (SEA) is 4,786 miles (7,700 km), calculated as a great-circle line from published OpenFlights airport coordinates. Actual flown distance is slightly longer due to airways and winds.
How long is the flight from London to Seattle?
The average nonstop flight time from LHR to SEA is 45 minutes. Gate-to-gate time is usually 20–35 minutes longer; connecting itineraries add 1–4 hours depending on the layover.
Which airlines fly from London to Seattle?
8 airlines serve this route nonstop: AA, AF, AY, BA, DL, IB, KL, VS. Schedules and amenities differ by carrier — compare live frequencies and fare classes on Kayak before you book.