$800 Cheap United flights St. Louis (STL) to London (LHR)

View $800 flight on Sun, Sep 6, 2026Opens in a new window

$800 Cheap United flights St. Louis (STL) to London (LHR)

Prices were available within the past 7 days and start at $800 for one-way flights and $935 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Sat, Aug 8 - Tue, Aug 25
STL
St. Louis
LHR
London
$935 Roundtrip, found 4 days ago
$935
Roundtrip
found 4 days ago
Select United flight, departing Sat, Aug 8 from St. Louis to London, returning Tue, Aug 25, priced at $935 found 4 days ago
United
Sun, Sep 6 - Tue, Sep 8
STL
St. Louis
LHR
London
$2,055 Roundtrip, found 13 hours ago
$2,055
Roundtrip
found 13 hours ago
Select United flight, departing Sun, Sep 6 from St. Louis to London, returning Tue, Sep 8, priced at $2,055 found 13 hours ago

Alternative airports near London

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

Select flight to Heathrow LHR. Cheapest option available. Average driving time to city center is 28 minutes. Flights from $1,482
LHR
Heathrow
Cheapest
Average driving time to city center28 min
Flights from $1,482

Travel information

0
Origin airport
Lambert-St. Louis Intl.
Destination airport
Heathrow
Airlines serving
Aer Lingus, Air Canada, American Airlines, Austrian Airlines, British Airways, Delta, Finnair, Iberia, KLM, Lufthansa, United, Virgin Atlantic
Popular airline
Finnair
Distance
6703 km

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