฿14,955 Cheap British Airways flights from Seattle to London (SEA→LON)

View ฿14,955 flight on Sat, 26 Sept 2026Opens in a new window
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British Airways flights from Seattle to London (SEA→LON)

Prices were available within the past 7 days and start at ฿14,955 for one-way flights and for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Find the cheapest month to fly from Seattle (SEA) to London (LON)

October is typically the cheapest month to fly

From ฿15,278 - ฿28,567 per traveller.

Travel information

Origin airport
Seattle - Tacoma Intl.
Destination airport
Heathrow
Distance
7657 km
*Available to Expedia members.