Find the Cheapest Flights from Saint Louis to United Kingdom

Unlock the cheapest flights and the best airfares from Saint Louis to United Kingdom. Make your dream trip both memorable and affordable!

Mon, May 10STL-LON
Air Canada

oneway$475

Wed, Sep 16STL-EDI
United Airlines

$866

Sun, Aug 30STL-LON
Frontier Airlines

$957

Saint Louis to United Kingdom: Flight information

Cheapest flight found$475

Cheapest month to flyMay

Most popular airlineAir Canada

Average flight duration18h 35m

Cheapest flight found

May 2027

$475

Jun 2026

$677

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