Flights from St. Louis, MO to London, England from $463

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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)

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

$463

ScholarTrip

10:03 am - 2:50 am

Finnair

1 Stop

10h 47m

STL - LHR

$696

ChatDeal

7:59 am - 6:35 am

Multiple Airlines

3 Stops

40h 36m

STL - STN

$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.

Kansas City to Birmingham from $749 pp

Lambert-St Louis to Birmingham from $1,512 pp

Destination information for London

Things to know before you go - useful duration and weather info for your trip from St. Louis to London.

$1 = £0.81

64.4 °F

2.0 ″

Airports servicing St. Louis

St. Louis (STL)

Airports servicing London

Heathrow (LHR)

Gatwick (LGW)

Stansted (STN)

London City (LCY)

Luton (LTN)

Southend (SEN)

Airline	Cheapest	Average	Flexibility	On-time
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%