Cheap flights from St. Louis (STL) to Heathrow (LHR) from $488

This is the cheapest one-way flight price, found on 5/30. Prices may vary by date and flight preferences.
STL — LHR
Jun 6 — Jun 131

How to find the cheapest flight from St. Louis (STL) to Heathrow (LHR)

All the information you need to plan the best STL to LHR flight in 2023: compare St. Louis to Heathrow flight prices with the expected peak season, weather and rainfall in Heathrow.

Popular in

July

Cheapest in

February

Round-trip from

$633

One-way from

$494
High demand for flights, 30% potential price rise
Best time to find cheap flights, 20% potential price drop
From Lambert-St Louis to London Heathrow
One-way flight from Lambert-St Louis to London Heathrow

STL - LON

Price

$633 - $1,115

LON

Temperature

39.2 - 62.6 °F

LON

Rainfall

1.6 - 2.8 inches

Cheap flights from St. Louis to Heathrow in June, July 2023

The best prices found for STL to LHR flights for June, July
Scroll through some of the best deals on flights from St. Louis to London in 2023. Check back soon for alternative fares.

St. Louis to Heathrow 2023 flight deals

Cheap flights to Heathrow from St. Louis found for this year
Scroll through some of the best deals on flights from St. Louis to London in 2023. Check back soon for alternative fares.

Cheap Air Canada flights from St. Louis to Heathrow

Find some of the cheapest Air Canada flights traveling from St. Louis to London. Deals update often to give you more flight options matching your criteria

Cheap British Airways flights from St. Louis to Heathrow

Take a gander at the lowest prices we've found on British Airways flights from St. Louis to London. If these deals don't fit your criteria, make sure to check back soon as new deals are always added.

Last minute flights from St. Louis to Heathrow

Late deals on return flights to Heathrow from St. Louis, departing today and this week
Have a look at some of the last-minute flights available departing from St. Louis to London. Users should double check the flight they book to ensure it matches the day, time, and destination they're looking for.

One-way flights to Heathrow from St. Louis

The cheapest one-way flights from St. Louis to Heathrow
Users in need of a one-way flight from St. Louis to London can choose from these deals. Users needing a return flight from St. Louis to London should utilize the search form above.

Find flights from St. Louis to Heathrow within your budget

Use the slider to find flights from St. Louis to Heathrow that fit your budget.

Fly from

Any airport

Fly to

Any airport

Budget

$730 - $760

Route

Depart

Return

Price

Lambert-St LouisLondon Heathrow

STL - LHR

STLLHR

Lambert-St Louis

Mon 10/16

1 stop10h 40m

London Heathrow

Thu 10/26

2 stops20h 25m

Lambert-St LouisLondon Heathrow

STL - LHR

STLLHR

Lambert-St Louis

Wed 10/11

2 stops12h 45m

London Heathrow

Wed 10/18

2 stops16h 56m

Lambert-St LouisLondon Heathrow

STL - LHR

STLLHR

Lambert-St Louis

Tue 9/19

2 stops16h 30m

London Heathrow

Wed 10/4

2 stops27h 20m

Lambert-St LouisLondon Heathrow

STL - LHR

STLLHR

Lambert-St Louis

Wed 10/18

1 stop15h 00m

London Heathrow

Tue 10/24

2 stops16h 40m

Lambert-St LouisLondon Heathrow

STL - LHR

STLLHR

Lambert-St Louis

Wed 10/18

1 stop13h 55m

London Heathrow

Wed 10/25

2 stops17h 35m

Lambert-St LouisLondon Heathrow

STL - LHR

STLLHR

Lambert-St Louis

Wed 10/4

2 stops14h 00m

London Heathrow

Wed 10/11

2 stops17h 40m

Lambert-St LouisLondon Heathrow

STL - LHR

STLLHR

Lambert-St Louis

Wed 10/18

1 stop10h 10m

London Heathrow

Wed 10/25

2 stops17h 42m

Lambert-St LouisLondon Heathrow

STL - LHR

STLLHR

Lambert-St Louis

Mon 10/16

2 stops14h 45m

London Heathrow

Mon 10/23

2 stops25h 30m

Lambert-St LouisLondon Heathrow

STL - LHR

STLLHR

Lambert-St Louis

Wed 11/15

1 stop12h 36m

London Heathrow

Thu 11/23

1 stop13h 53m

Flights are sorted by cheapest first

Deals found on 5/31

Reviews of Airlines Servicing Heathrow

Get a feel of what it's like to fly with Air Canada, British Airways and Virgin Atlantic from St. Louis to London by reading reviews from past customers. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
2,369 reviews

Food

7.2

Overall

8.0

Crew

8.5

Boarding

8.1

Entertainment

7.8

Comfort

7.9

Reviews

1 / 10

Flights were on time with no delays, luggage arrived with the flight. I know the flights were short, but the only drinks offered were water, tea and coffee. It would’ve been nice to have the option to choose a soda, especially since I was in comfort class. The snacks were very small.

Delta
8.0
Very good
2,369 reviews
Delta
8.0
Very good
2,369 reviews

Food

7.2

Overall

8.0

Crew

8.5

Boarding

8.1

Entertainment

7.8

Comfort

7.9

Reviews

1 / 10

Flights were on time with no delays, luggage arrived with the flight. I know the flights were short, but the only drinks offered were water, tea and coffee. It would’ve been nice to have the option to choose a soda, especially since I was in comfort class. The snacks were very small.

Air France
7.6
Good
194 reviews
Delta
8.0
Very good
2,369 reviews

Food

7.2

Overall

8.0

Crew

8.5

Boarding

8.1

Entertainment

7.8

Comfort

7.9

Reviews

1 / 10

Flights were on time with no delays, luggage arrived with the flight. I know the flights were short, but the only drinks offered were water, tea and coffee. It would’ve been nice to have the option to choose a soda, especially since I was in comfort class. The snacks were very small.

United Airlines
7.6
Good
1,535 reviews
Delta
8.0
Very good
2,369 reviews

Food

7.2

Overall

8.0

Crew

8.5

Boarding

8.1

Entertainment

7.8

Comfort

7.9

Reviews

1 / 10

Flights were on time with no delays, luggage arrived with the flight. I know the flights were short, but the only drinks offered were water, tea and coffee. It would’ve been nice to have the option to choose a soda, especially since I was in comfort class. The snacks were very small.

KLM
7.6
Good
160 reviews
Delta
8.0
Very good
2,369 reviews

Food

7.2

Overall

8.0

Crew

8.5

Boarding

8.1

Entertainment

7.8

Comfort

7.9

Reviews

1 / 10

Flights were on time with no delays, luggage arrived with the flight. I know the flights were short, but the only drinks offered were water, tea and coffee. It would’ve been nice to have the option to choose a soda, especially since I was in comfort class. The snacks were very small.

Finnair
7.5
Good
277 reviews
Delta
8.0
Very good
2,369 reviews

Food

7.2

Overall

8.0

Crew

8.5

Boarding

8.1

Entertainment

7.8

Comfort

7.9

Reviews

1 / 10

Flights were on time with no delays, luggage arrived with the flight. I know the flights were short, but the only drinks offered were water, tea and coffee. It would’ve been nice to have the option to choose a soda, especially since I was in comfort class. The snacks were very small.

Related info for your journey

Useful info, stats and facts about St. Louis to Heathrow flights.

Top 10 airlines flying from St. Louis to Heathrow

The chart below displays the airlines Cheapflights users traveling from St. Louis to Heathrow choose most often. Cheapest and average prices are based on aggregated data from the past 12 months.
AirlineCheapestAverageFlexibilityOn-timeCOVID-19 safety
American AirlinesCheapest$464Average$927FlexibilityNo cancel feeOn-time71%COVID-19 safety
Search American Airlines flights
LufthansaCheapest$573Average$778FlexibilityNo cancel feeOn-time76%COVID-19 safety
Search Lufthansa flights
Air CanadaCheapest$620Average$1,175FlexibilityNo cancel feeOn-time67%COVID-19 safety
Search Air Canada flights
Virgin AtlanticCheapest$632Average$877FlexibilityNo cancel feeOn-time72%COVID-19 safety
Search Virgin Atlantic flights
KLMCheapest$658Average$815FlexibilityNo cancel feeOn-time75%COVID-19 safety
Search KLM flights
DeltaCheapest$659Average$877FlexibilityNo cancel feeOn-timeN/ACOVID-19 safety
Search Delta flights
FinnairCheapest$660Average$821FlexibilityNo cancel feeOn-time76%COVID-19 safety
Search Finnair flights
IberiaCheapest$670Average$787FlexibilityNo cancel feeOn-time77%COVID-19 safety
Search Iberia flights
British AirwaysCheapest$672Average$1,011FlexibilityNo cancel feeOn-time70%COVID-19 safety
Search British Airways flights
Air FranceCheapest$681Average$1,096FlexibilityNo cancel feeOn-time77%COVID-19 safety
Search Air France flights
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