Flights operate between Seattle (SEA) and London (LHR).
1 airline operates this route with 2-4 flights daily flights.
Average flight time is 9h 15m - 10h 50m.
Route distance is 4812 miles (7743 km).
Route Distance
4812 miles (7743 km)
Average Duration
9h 15m - 10h 50m
Airlines Operating This Route
British Airways
Flight Frequency
Daily Flights
2-4 flights
Weekly Flights
21
Typical Departure Time Ranges
Earliest Departure
18:50
Latest Departure
18:50
Route Intelligence Dashboard
Overall Connectivity Score
35
ModerateRoute Diversity
1
Direct Routes
British Airways serves 1 destination from SEA
Weekly Frequency
7
Weekly Flights
Trend: Stable
Top 1 Most Frequent Routes - Details
| Route | Weekly Flights | Duration | Distance | Reliability |
|---|---|---|---|---|
| SEA → London (LHR) (LHR) | 7/week | 9h 15m - 10h 50m | 4,812 km | Seasonal |
Flight Schedule & Filters
British Airways flights from SeaTac (SEA) to London (LHR)
British Airways operates scheduled nonstop flights between SeaTac (SEA) and London (LHR). British Airways operates 2-4 flights daily flights on this route.• Flight Duration: 9h 15m - 10h 50m (average flight time)• Distance: 4812 miles (7743 km) (air miles between airports)• Daily Flights: 2-4 flights (scheduled departures per day)
SeaTac (SEA)
US
London (LHR)
GB
FLIGHT TIME
9h 15m - 10h 50m
FLIGHT DISTANCE
4812 miles (7743 km)
9h 30m - 9h 30m
18:50
18:50
4812 miles (7743 km)
March
1 (Show)
21
British Airways Terminal Information & Contact
Departure Terminal - SeaTac (SEA)
Terminal: 1
Phone: 1-800-247-9297
Location: 1, Seattle, US
Arrival Terminal - London (LHR)
Terminal: 5
Phone: 44-0124-412-0715
Location: 5, London, GB
British Airways Flight Schedule from SeaTac (SEA) to London (LHR)
| Flight | Airline | Departure | Arrival | Aircraft |
|---|---|---|---|---|
BA48 |  British Airways | 18:50 | 12:20:00 | Boeing 777-300ER |
British Airways Monthly Flight Calendar
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British Airways Terminal Information
Departure Terminal at SeaTac (SEA):
Terminal 1:
• British Airways Terminal Phone: 1-800-247-9297
Arrival Terminal at London (LHR):
• Terminal : British Airways operates from this terminal
Terminal 5:
• British Airways Terminal Phone: 44-0124-412-0715
British Airways Contact Information and Customer Services
British Airways Address
British Airways Plc, Waterside, PO Box 365
Harmondsworth UB7 0GB., UK
Customer Service Phone
+44 20 8738 5050Official Website
britishairways.com/travel/home/public/en_inFrequently Asked Questions
How many British Airways flights operate from Seattle (SEA) to London (LHR)?
British Airways operates 1 flight from Seattle (SEA) to London (LHR).
What city does London (LHR) airport serve?
London (LHR) airport serves London, GB.
How long is the British Airways flight from Seattle (SEA) to London (LHR)?
The flight duration is approximately 9h 15m - 10h 50m.
What is the distance from Seattle (SEA) to London (LHR)?
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.
Which terminal does British Airways use at Seattle (SEA)?
British Airways flights from Seattle (SEA) depart from Terminal 1. Terminal 1 phone: 1-800-247-9297.
View all British Airways flights to Seattle (SEA) →
Popular British Airways routes from Seattle include multiple destinations.
Route data verified regularly by Triposia Travel Research Team.