£443 Cheap United flights from London to St. Louis (LHR→STL)

View £443 flight on Wed, 9 Sept 2026Opens in a new window

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United flights from London to St. Louis (LHR→STL)

Prices were available within the past 7 days and start at £443 for one-way flights and £827 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Wed, 9 Sept - Wed, 23 Sept
LHR
London
STL
St. Louis
£827 Return, found 11 hours ago
£827
Return
found 11 hours ago
Select United flight, departing Wed, 9 Sept from London to St. Louis, returning Wed, 23 Sept, priced at £827 found 11 hours ago

Alternative airports near St. Louis

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Lambert-St. Louis Intl. STL. Cheapest option available. Average driving time to city centre is 20 minutes. Flights from £1,336
STL
Lambert-St. Louis Intl.
Cheapest
Average driving time to city centre20 min
Flights from £1,336

Travel information

Origin airport
Heathrow
Destination airport
Lambert-St. Louis Intl.
Airlines serving
Aer Lingus, Air Canada, Air France, American Airlines, Austrian Airlines, British Airways, Brussels Airlines, Delta, Finnair, Iberia, KLM, Lufthansa, Turkish Airlines, United, Virgin Atlantic
Popular airline
British Airways
Distance
6703 km
Average flight time
9 hours 5 mins
*Available to Expedia members.