Cheap Flights from St. Louis (STL) to London (LHR)

Popular airlines from St. Louis Lambert Intl. Airport (STL) to Heathrow Airport (LHR)

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Find the cheapest month to fly from St. Louis (STL) to London (LHR)

November is typically the cheapest month to fly

From ￥80,411 - ￥227,309 per traveler.

Frequently asked questions

How much is a flight from Lambert-St. Louis Intl. Airport (STL) to London Heathrow?
Within the past 7 days on Expedia, for flights departing within the next year, the lowest price quoted for a round-trip journey between St. Louis Lambert International Airport and London Heathrow was . Great fares don't last forever, so make sure you book yours ASAP. Prices and availability are subject to change. Additional terms apply.
Do I need to pay a cancellation fee if I cancel my flight from Lambert-St. Louis Intl. Airport (STL) to Heathrow Airport?
When it comes to cancellation fees, every airline has its own terms and conditions. If you decide to cancel your trip, head to our Customer Service Portal.
How do I find cheap flights from STL to London Heathrow that have flexible change policies?
Many airlines offer the option to reschedule your flight without a change fee. All you pay is the difference between the original flight and the new flight. When you're searching for STL to LHR flights, you'll see a "no change fees" filter for you to select.
How many hours is the flight from Lambert-St. Louis Intl. Airport (STL) to Heathrow Airport (LHR)?
It takes roughly 10 hours and 45 minutes to journey from Lambert-St. Louis Intl. Airport (STL) to Heathrow Airport. If you hope to have a snooze, bring a pillow, an eye mask and some earplugs.
How far is the flight from St. Louis Lambert International Airport to Heathrow Airport (LHR)?
St. Louis to Hounslow is around 6,800 kilometers, so be prepared to spend a while in the air. Make sure you pack all the essentials, from your earplugs to your eye mask. Take a few snacks to munch on throughout your flight too.
Which airlines fly direct from STL to Heathrow Airport (LHR)?
If you want to travel straight from Lambert-St. Louis Intl. Airport (STL) to Heathrow Airport, you'll need to book a flight with at least one stop. Unfortunately, there are no airlines that fly directly on this route.
Are STL to London Heathrow flight tickets cheaper when they're purchased at the last minute?
Flight tickets from Lambert-St. Louis Intl. Airport (STL) to Heathrow Airport are available up to 12 months prior to departure on Expedia. And although you may occasionally score great last-minute deal, it's never a sure thing. Also, booking your flights well in advance means you'll have more choices — and you can avoid getting stuck in the dreaded middle seat! We're constantly updating our fares to bring you the best bargains, so check back often for all the latest specials.

Travel information

Origin airport
Lambert-St. Louis Intl.
Destination airport
Heathrow
Distance
6703 km

Book with confidence

St. Louis to London Flights

Sometimes you just need to get out of town or maybe you’re looking for a change of scenery. Regardless of the reason, a flight from St. Louis to will do just the trick! Go on, plan to see all the famous landmarks and eat your weight in the local cuisine. Your trip is beckoning, so answer the call by packing your suitcase and filling your travel itinerary with exploring London.

Whether you’re flying for business or jet-setting on your personal time, you’ve come to the right place. Here at Expedia.com, we’ll pair you up with STL to LHR flights that won’t make your bank account wince. Ready to temporarily leave behind St. Louis for new horizons? Browse through our cheap airfare, and filter by flight times and dates until you find just what you had in mind. From flights without layovers to ones that arrive early in the morning, you’ll come across plane tickets that suit your travel preferences. You can even bundle your flight to LHR with hotels and car rentals to score even bigger savings.

All set to hit the clouds? Book your travel arrangements with us today and have left-over money to put toward your travel outings and adventures.

St. Louis to London Flights

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