St. Louis to London Flights (STL-LON) from $428

Selected fares from St. Louis to London

The cheapest prices found with in the last 7 days for return flights were $629 and $428 for one-way flights to London for the period specified. Prices and availability are subject to change. Additional terms apply.

Wed, Oct 2 - Mon, Oct 7

STL

Lambert-St. Louis Intl.

LHR

Heathrow

$629 Roundtrip, found 5 days ago

$629

Roundtrip

found 5 days ago

Select British Airways flight, departing Wed, Oct 2 from Lambert-St. Louis Intl. to Heathrow, returning Mon, Oct 7, priced at $629 found 5 days ago

Tue, Dec 10 - Fri, Jan 31

STL

Lambert-St. Louis Intl.

LHR

Heathrow

$630 Roundtrip, found 3 days ago

$630

Roundtrip

found 3 days ago

Select Iberia flight, departing Tue, Dec 10 from Lambert-St. Louis Intl. to Heathrow, returning Fri, Jan 31, priced at $630 found 3 days ago

Sun, Sep 29 - Wed, Oct 16

STL

Lambert-St. Louis Intl.

LHR

Heathrow

$633 Roundtrip, found 4 days ago

$633

Roundtrip

found 4 days ago

Select Air Canada flight, departing Sun, Sep 29 from Lambert-St. Louis Intl. to Heathrow, returning Wed, Oct 16, priced at $633 found 4 days ago