British Airways flights from LHR to SEA
Find comprehensive British Airways flight information, schedules, and booking details for direct flights from LHR to SEA. British Airways operates 2-4 flights daily flights on this route.• Flight Duration: 9h 00m - 10h 38m (average flight time)• Distance: 4812 miles (7743 km) (air miles between airports)• Daily Flights: 2-4 flights (scheduled departures per day)
LHR
SEA
FLIGHT TIME
9h 00m - 10h 38m
FLIGHT DISTANCE
4812 miles (7743 km)
10h 0m - 10h 0m
14:55
14:55
4812 miles (7743 km)
March
1 (Show)
21
British Airways Flight Schedule from LHR to SEA
| Flight | Airline | Departure | Arrival | Aircraft |
|---|---|---|---|---|
BA49 |  British Airways | 14:55 | 16:55:00 | Boeing 777-300ER |
British Airways Monthly Flight Calendar
December 2025
Route Insights
Pricing patterns: March typically offers lower prices due to reduced demand outside peak travel seasons.
Best departure times: Peak departure times are 14:00, offering more flight options and potentially better connections.
LHR - SEA flight price statistics
$828
ApproximateThe numbers are average prices found based on user searches for direct flights between the airports. It's calculated from the cheapest prices found per month for a round-trip with 1 adult and can vary depending on the amount of data we have for this particular route.
$557
Jan$549
Feb$500
Mar$542
Apr$2515
May$750
Jun$792
Jul$1079
Aug$642
Sep$754
Oct$596
Nov$659
DecBritish Airways Terminal Information
Terminal information for British Airways on this route is currently being updated. Please check back soon or contact the airports directly for terminal details.
Frequently Asked Questions about British Airways Flights
How many British Airways flights operate from LHR to SEA?
British Airways operates 1 flight from LHR to SEA.
What city does SEA airport serve?
SEA airport serves SeaTac.
How long is the British Airways flight from LHR to SEA?
The flight duration is approximately 9h 00m - 10h 38m.
What is the distance from LHR to SEA?
The distance is 4812 miles (7743 km).
What aircraft does British Airways use on this route?
British Airways uses Boeing 777-300ER on this route.
Which other airlines operate on this route?
2 other airlines operate on this route: Delta Air Lines, Virgin Atlantic.
What is the cheapest month to fly British Airways from LHR to SEA?
March is typically the cheapest month to fly British Airways on this route.
What is the average price for a British Airways flight from LHR to SEA?
The average price for a round-trip British Airways flight on this route is approximately $828. Prices can vary based on booking time and demand.
How many British Airways flights operate per week on this route?
British Airways operates approximately 21 flights per week from LHR to SEA.