Are there direct flights from SEA to LHR?

Yes — weekly open route data lists a nonstop corridor from SEA to LHR.

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Open-data sketch · Verify independently · Baseline July 2026

Nonstop checker

Direct nonstop flight: Seattle (SEA) → London (LHR)

Instant answer from weekly open route data — not live airline inventory.

Open route data (weekly)

YES — NONSTOP IN OPEN DATA

Weekly open route snapshot lists scheduled nonstop service: Alaska Airlines, British Airways, Delta Air Lines, Virgin Atlantic.

Carriers: Alaska Airlines, British Airways, Delta Air Lines, Virgin Atlantic

OriginDestination

Open route data (weekly)

YES — NONSTOP IN OPEN DATA

Weekly open route snapshot lists scheduled nonstop service: Alaska Airlines, British Airways, Delta Air Lines, Virgin Atlantic.

Carriers in open data (4)

Weekly open route data snapshot — not live airline inventory. Always verify with the carrier before booking.