Cheap flights from St. Louis (STL) to London (LON)

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The best prices from Lambert-St Louis to London are usually found in September or October, booked 54 days in advance, depart on a Wednesday or Friday and return on a Sunday

How to find the cheapest flight from
St. Louis (STL) to London (LON)

All the information you need to plan the best STL to LON flight in 2022: compare St. Louis to London flight prices with the expected peak season, weather and rainfall in London.
STL - LON
Price
$768 - $1,217
LON
Temperature
39.2 - 62.6 °F
LON
Rainfall
1.6 - 2.8 inches

Popular in

December

High demand for flights, 22% potential price rise

Cheapest in

September

Best time to find cheap flights, 19% potential price drop

Round-trip from

$768

From Lambert-St Louis to London (LON)

One-way from

$463

One-way flight from Lambert-St Louis to London (LON)

Flight route prices based on searches on Cheapflights within the last 3 days, monthly prices based on aggregated historical data.
When is the cheapest time to fly from St. Louis to London (STL - LON)?

It’s optimal to fly from St. Louis to London in the evening. By choosing this option you can save up to 17% on the cost of your flight, compared to a flight in the afternoon.

What is the cheapest day to fly round-trip from St. Louis to London?

Saturday flights are generally found to be more expensive for flights from St. Louis to London. This shouldn’t discourage you from searching, as you can still find great deals by being flexible with your options. Use our search form to find deals on tickets to London.

What is the cheapest month to fly from St. Louis to London?

Flights from St. Louis to London lean towards being more expensive in December. Prices are generally better when you fly from St. Louis to London in September, with the cheapest ticket starting at $390.

How far in advance should I book a flight from St. Louis to London?

Travelers have found it’s best to book a flight 53 days in advance to save up to 77% compared to booking the same week of travel. As your travel date approaches, the cost of this flight route may potentially increase. While opting to book 53 days out may not be an option for all, there are still additional ways to secure a deal in the near future. You might find a flight from St. Louis to London 1-2 weeks in advance for as low as $1,203, or $1,720 for flights within the next 24 hours.

Cheap flights from St. Louis to London in May, June 2022

The best prices found for STL to LON flights for May, June
8 Jun - 14 Jun
$956pp
STL
Lambert-St Louis
Air France
 
1 STOP
LHR
London Heathrow
LHR
London Heathrow
Air France
 
1 STOP
STL
Lambert-St Louis
10 Jun - 16 Jun
$987pp
STL
Lambert-St Louis
Delta
 
1 STOP
LHR
London Heathrow
LHR
London Heathrow
Delta
   
2 STOPS
STL
Lambert-St Louis
10 Jun - 16 Jun
$1,004pp
STL
Lambert-St Louis
American Airlines
 
1 STOP
LHR
London Heathrow
LHR
London Heathrow
American Airlines
 
1 STOP
STL
Lambert-St Louis

Lambert-St Louis to London 2022 flight deals

Cheap flights to London from St. Louis found for this year
21 Sep - 2 Nov
$692pp
STL
Lambert-St Louis
Air France
 
1 STOP
LHR
London Heathrow
LHR
London Heathrow
Air France
   
2 STOPS
STL
Lambert-St Louis
24 Oct - 31 Oct
$700pp
STL
Lambert-St Louis
Air France
 
1 STOP
LHR
London Heathrow
LHR
London Heathrow
Air France
   
2 STOPS
STL
Lambert-St Louis
21 Sep - 28 Sep
$701pp
STL
Lambert-St Louis
British Airways
 
1 STOP
LHR
London Heathrow
LHR
London Heathrow
British Airways
   
2 STOPS
STL
Lambert-St Louis

Last minute flights from St. Louis to London

Late deals on round-trip flights to London from St. Louis, departing today and this week
30 May - 6 Jul
$1,240pp
STL
Lambert-St Louis
American Airlines
 
1 STOP
LHR
London Heathrow
LHR
London Heathrow
American Airlines
 
1 STOP
STL
Lambert-St Louis
1 Jun - 30 Jun
$1,321pp
STL
Lambert-St Louis
American Airlines
 
1 STOP
LHR
London Heathrow
LHR
London Heathrow
American Airlines
 
1 STOP
STL
Lambert-St Louis
31 May - 6 Jun
$1,343pp
STL
Lambert-St Louis
Multiple Airlines
 
1 STOP
LHR
London Heathrow
LHR
London Heathrow
Multiple Airlines
   
2 STOPS
STL
Lambert-St Louis

One-way flights to London from St. Louis

The cheapest one-way flights from St. Louis to London
9:27 am - 2:40 am
Lufthansa
1 Stop
12h 13m
STL - LHR
Lufthansa
$463
ScholarTrip
10:03 am - 2:50 am
Finnair
1 Stop
10h 47m
STL - LHR
Finnair
$696
ChatDeal
7:59 am - 6:35 am
Multiple Airlines
3 Stops
40h 36m
STL - STN
Multiple Airlines
$704
Kiwi.com

Related info for your journey

Useful info, stats and facts about <span class="emphasized">St. Louis</span> to <span class="emphasized">London</span> flights.

Flight FAQs

From St. Louis to London

What airport do you fly from for flights from St. Louis to London?

Lambert-St Louis (STL) is the airport you will fly out of if you book a flight from St. Louis to London. You should not have trouble finding flights to London from Lambert-St Louis; the airport handles an average of 0 outbound flights to London per day. You should also have plenty of airline options to choose from since 15 airlines have flights from the St. Louis airport to London. It is only a 12.7 mi journey to Lambert-St Louis (STL) from St. Louis’s city center.

Which airlines flying from Lambert-St Louis to London have flexible cancellations due to COVID-19?

Some of our airline partners flying from Lambert-St Louis to London have new flexible policies in place due to COVID-19. American Airlines, British Airways, and United Airlines are some of the carriers where you may find flexible cancellation policies. You can use our site to filter for airlines like American Airlines with this kind of flexibility.

Can I find flights from St. Louis to London for under $700 on Cheapflights?

Yes, there are multiple flights from St. Louis to London for under $700. The cheapest flight booked recently is on Air France for just $692, but on average you can expect to pay $725.

Are there last-minute flights available from St. Louis to London for under $1,300?

There are currently 20+ open flights from St. Louis to London within the next 7 days for less than $1,300.

What are the cheapest airlines flying from St. Louis to London round-trip?

According to our current data, Air France ($692), American Airlines ($713), and Finnair ($720) offers the cheapest pricing from St. Louis to London. These flights start at 26% lower than the current average price 3 months from now.

What are the cheapest airlines to fly from St. Louis to London one-way?

The cheapest airline one-way is Lufthansa, with whom users have recently found tickets for as low as $373. However, be on the lookout for offers from Finnair and United Airlines, as they are both options that can get you from St. Louis to London for a low price.

What are the most popular airlines that fly from St. Louis to London?

When booking a flight from St. Louis to London, you may want to consider flying on Cape Air, American Airlines or Air Canada as they are the most popular for this route.

What are the cheapest flights from St. Louis to London?

The cheapest flight price from St. Louis to London is $690. On average you can expect to pay $1,778. The most popular route, (Lambert-St Louis - London Heathrow), can usually be booked for $708.

What are the most popular routes from St. Louis to London?

The most popular flight routes from St. Louis to London are Lambert-St Louis - London Heathrow, Lambert-St Louis - London City and Lambert-St Louis - London Gatwick.

COVID Restrictions

View COVID Travel Restrictions for London, England

Do I need a COVID test to fly to London from St. Louis?

Information is based on travel restrictions from Lambert-St Louis to London

Most visitors from Lambert-St Louis can enter London without restrictions.

COVID-19 testing requirements
Visitors from Lambert-St Louis are not required to present a negative COVID-19 PCR test or antigen result upon entering London.

Quarantine requirements
Visitors from Lambert-St Louis are not required to quarantine after entering London.

Do I need a test to fly back to St. Louis from London?

Returning to Lambert-St Louis from London

COVID-19 testing requirements
Visitors from London must present a negative RT-PCR (NAAT) or Antigen (quick-test) test taken 1 day for RT-PCR (NAAT) and 1 day for Antigen (quick-test) before departing to Lambert-St Louis.

Quarantine requirements
Visitors from London are not required to quarantine after entering Lambert-St Louis.

Hide COVID Travel Restrictions for London, England

Alternative routes for St. Louis to London

See prices for flight routes from nearby airports that may be better suited for you.

Destination information for London

Things to know before you go - useful duration and weather info for your trip from St. Louis to London.
Today's exchange rate
$1 = £0.81
Average temperature for May in London
64.4 °F
Avg rainfall for May in London
2.0 ″

Airports servicing St. Louis

Airports servicing London

Gatwick (LGW)
Stansted (STN)
London City (LCY)
Luton (LTN)
Southend (SEN)

Top 10 airlines flying from Lambert-St Louis to London

The chart below displays the airlines Cheapflights users traveling from St. Louis to London choose most often. Cheapest and average prices are based on aggregated data from the past 12 months.
Airline Cheapest Average Flexibility On-time COVID-19 safety
Brussels Airlines
$351 $627 No cancel fee N/A
Virgin Atlantic
$430 $850 No cancel fee 72%
United Airlines
$524 $745 No cancel fee 69%
Finnair
$561 $835 No cancel fee 76%
British Airways
$606 $863 No cancel fee 70%
American Airlines
$611 $837 No cancel fee 71%
Iberia
$627 $889 No cancel fee 77%
Delta
$649 $1,143 No cancel fee N/A
Air France
$650 $1,051 No cancel fee 77%
Air Canada
$671 $878 No cancel fee 67%
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