$394 Cheap flights from Lambert-St. Louis Intl. to Heathrow (STL to LHR)

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Find The Best Dates To Fly from Lambert-St. Louis Intl. to Heathrow

Compare Flight Prices from St. Louis to London

Affordable Airfare Tickets from STL to LHR Airport

The cheapest flights to Heathrow found within the past 7 days were $512 round trip and $394 one way. Prices and availability subject to change. Additional terms may apply.

Tue, Aug 12 - Wed, Sep 10
STL
St. Louis
LHR
London
$512 Roundtrip, just found
$512
Roundtrip
just found
Select Iberia flight, departing Tue, Aug 12 from St. Louis to London, returning Wed, Sep 10, priced at $512 just found
Sun, Sep 7 - Fri, Sep 19
STL
St. Louis
LHR
London
$519 Roundtrip, found 15 hours ago
$519
Roundtrip
found 15 hours ago
Select Air Canada flight, departing Sun, Sep 7 from St. Louis to London, returning Fri, Sep 19, priced at $519 found 15 hours ago
Sun, Sep 28 - Tue, Oct 7
STL
St. Louis
LHR
London
$520 Roundtrip, found 1 day ago
$520
Roundtrip
found 1 day ago
Select Air Canada flight, departing Sun, Sep 28 from St. Louis to London, returning Tue, Oct 7, priced at $520 found 1 day ago
Wed, Aug 20 - Tue, Aug 26
STL
St. Louis
LHR
London
$523 Roundtrip, just found
$523
Roundtrip
just found
Select Iberia flight, departing Wed, Aug 20 from St. Louis to London, returning Tue, Aug 26, priced at $523 just found
Sun, Aug 10 - Tue, Aug 26
STL
St. Louis
LHR
London
$523 Roundtrip, found 8 hours ago
$523
Roundtrip
found 8 hours ago
Select Iberia flight, departing Sun, Aug 10 from St. Louis to London, returning Tue, Aug 26, priced at $523 found 8 hours ago
Sun, Sep 7 - Wed, Sep 17
STL
St. Louis
LHR
London
$526 Roundtrip, found 15 hours ago
$526
Roundtrip
found 15 hours ago
Select Air Canada flight, departing Sun, Sep 7 from St. Louis to London, returning Wed, Sep 17, priced at $526 found 15 hours ago
Wed, Aug 6 - Wed, Aug 13
STL
St. Louis
LHR
London
$526 Roundtrip, found 12 hours ago
$526
Roundtrip
found 12 hours ago
Select Virgin Atlantic flight, departing Wed, Aug 6 from St. Louis to London, returning Wed, Aug 13, priced at $526 found 12 hours ago
Wed, Aug 13 - Wed, Aug 20
STL
St. Louis
LHR
London
$529 Roundtrip, found 8 hours ago
$529
Roundtrip
found 8 hours ago
Select United flight, departing Wed, Aug 13 from St. Louis to London, returning Wed, Aug 20, priced at $529 found 8 hours ago
Mon, Aug 25 - Mon, Sep 1
STL
St. Louis
LHR
London
$531 Roundtrip, found 1 day ago
$531
Roundtrip
found 1 day ago
Select Virgin Atlantic flight, departing Mon, Aug 25 from St. Louis to London, returning Mon, Sep 1, priced at $531 found 1 day ago
Tue, Aug 12 - Wed, Aug 20
STL
St. Louis
LHR
London
$534 Roundtrip, found 8 hours ago
$534
Roundtrip
found 8 hours ago
Select Delta flight, departing Tue, Aug 12 from St. Louis to London, returning Wed, Aug 20, priced at $534 found 8 hours ago

Frequently asked questions

Can I catch a flight from Lambert Field to LHR right now?
It's prudent to know about any travel advice reports and quarantine requirements in place in your destination city. Ensure you check out our Covid-19 Travel Advisor for up-to-date info on catching a flight to London Heathrow.
Are there direct flights from Lambert-St. Louis Intl. Airport (STL) to Heathrow Airport (LHR)?
If you want to travel quickly from STL to Heathrow Airport (LHR), try American Airlines, British Airways and United Airlines. No airlines offer nonstop flights on this route, so you'll have to make at least one stopover.
If I am not able to travel due to COVID-19, can I change my booking to a later date?
For more info about changing your flight to Heathrow Airport (LHR), please visit our Customer Service Portal.
How long is the flight from STL to LHR?
On average, it takes 10 hours and 54 minutes to travel from Lambert Field to London Heathrow. For this long-haul flight, you'll benefit from being as well prepared as possible. Think about bringing a neck pillow for improved sleep, packing some healthy snacks and wearing comfortable clothes.
What is the flight distance from STL to Heathrow Airport (LHR)?
From STL to LHR, there's a flight distance of 4,200 mi. So, it'll be wise to have a good selection of entertainment options. Movies, audio books, music ... You name it. If you're adequately prepared, it won't feel like too long before you hear the call to prepare for landing.
What airlines fly from Lambert Field to Heathrow Airport (LHR)?
As yet, there are no direct flights provided between St. Louis Lambert International Airport and London Heathrow. Start planning early to save time and find the easiest route with minimal layovers.
What airlines have practices regarding COVID-19 in place and use social distancing?
From the moment you enter the departure terminal to when you leave the arrivals terminal, if you're flying with British Airways, Virgin Atlantic or SAS you can be sure that COVID-19 measures and social distancing rules have been adhered to. Many airlines have introduced capped capacity flights and keeping the middle seat empty.
What is the best day to buy a plane ticket?
This just in! Airfares offered on Thursdays tend to be the cheapest, according to flight demand on Travelocity in 2021. Tuesday and Wednesday prices are also good, but you may want to prepare your budget if booking during the weekend, as data shows that is when prices are generally at their highest.
What are the cheapest days to fly?
Frequent travelers may already know this, but earlier in the week can be the cheapest time to fly. In 2021, flights departing on a Monday were generally the cheapest of the week, whereas you may pay a premium for weekend flights when demand is usually high. On average, tickets were most expensive for Saturday departures, so if you need to fly out on a weekend, you might look for deals ahead of time.
How far in advance can you book a flight?
Trying to figure out how early you should book your flight? It's possible to start comparing international airfares on Travelocity up to 12 months in advance. However, it does depend on the carrier as not all airlines release their prices that far out. According to our 2021 flight demand trends, last minute planners can still bag a bargain with some of the cheapest fares appearing 0-2 weeks prior to their travel dates.*According to flight demand on Travelocity.com from January to December 2021. Savings are subject to change based on departure location, date and destination.

Flight information from St. Louis to London

 

Traveling From
Lambert-St. Louis Intl.
Traveling To
Heathrow
Shortest Flight Time
 hours mins
Earliest Departure Time
Latest Departure Time
Lowest Flight Price
$512

Route Info

Flight path for flights from Lambert-St. Louis International Airport to London Heathrow Airport.


Origin:
STL - Lambert-St. Louis International Airport
Destination:
LHR - London Heathrow Airport
Distance:
4,349.00 miles


Discover our best flights from St. Louis STL to London LHR. 

With 20 airlines to choose from on Travelocity, you can easily find the best option for you. Use our filters to sort by price, compare airlines, and find the most convenient flight times. 

 

Find our best return flights from St. Louis STL to London LHR at the right price  

Airfares to London LHR from St. Louis STL currently cost between $512 and $534. It’s usually cheaper to book a round trip than two separate one-way flights. Prices and availability subject to change. Additional terms may apply. 

 

Book one-way flights from St. Louis STL to London LHR 

If you want to be flexible about when you return, or keep your travel options open ended, a one-way flight could be just the ticket! You’ll find one-way airfares from St. Louis STL to London LHR on Travelocity starting at $394. Prices and availability subject to change. Additional terms may apply. 

 

Get to London LHR from St. Louis STL quicker with direct flights. 

Get to London faster, without the hassle of changing planes and moving baggage, by booking a direct flight. Expect your direct flight to LHR from STL to take around hour(s) min(s).  

 

Find our cheapest airfares for flights from St. Louis STL to London LHR

Find cheap flight deals by using our search filters to sort results starting with the lowest price airfares to LHR from STL. Our Price Match Promise means if you find a lower rate on Travelocity.com or on another US-based website within 24 hours of booking, we’ll credit or refund the difference.  

 

Get our best airfare deals for your flight from St. Louis STL to London LHR today 

If you’re flexible about when you travel, August is usually the cheapest month to fly from St. Louis STL to London LHR. If you need to be more specific, search by date and arrival and departure times.Then, compare prices across different airlines, and sort results by lowest price first. 

 

Book flexible airline tickets for flights to London LHR from St. Louis STL 

Some airlines let you change your travel dates without charging a fee. Use our ‘no change fee’ filter to see which flights to LHR from STL have this option.  

 

Travel with confidence when you book flights to London LHR from St. Louis STL with Travelocity 

We’ve secured fantastic deals with all the main airline carriers and it’s easy to compare, choose, and book with Travelocity. With 24/7 customer service and our free 'App', we’ll always keep you moving. 

*Price based on the lowest price found within past 24 hours and based upon one night stay for two adults over the next thirty days. Prices and availability subject to change. Additional terms may apply.