Find Cheap Flights from London Heathrow to Lambert-St Louis (LHR - STL)

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Good to Know

Average Price:
$1409
(avg. price over the last 2 weeks)
Good Deal:
$890
or less (round trip)

When to Book Flights from London Heathrow to Lambert-St Louis

Flight prices as travel date approaches
-1 day
-2 days

Top tips for Finding a Cheap Flight

Looking for a cheap flight? 25% of our users found flights on this route for $889 or less.
The cheapest flight from London Heathrow to Lambert-St Louis was found 90 days before departure, on average.
Book at least 2 weeks before departure in order to get a below-average price.
Morning departure is around 15% more expensive than an evening flight, on average*.
*Average of the lowest prices shown in KAYAK’s search results for departures within the next 30 days

FAQs for Booking London Heathrow to Lambert-St Louis Flights

How long does a flight from London Heathrow to Lambert-St Louis take?
An average nonstop flight takes 11h 22m, covering a distance of 4190 miles.
Which airlines provide the cheapest flights from London Heathrow to Lambert-St Louis?
In the past 3 days, the cheapest round-trip tickets were found on British Airways ($593), Multiple Airlines ($744) and Virgin Atlantic ($872).
Do I need a passport to fly between London Heathrow and Lambert-St Louis?
Yes.
What’s the cheapest day of the week to fly London Heathrow to Lambert-St Louis?
For London Heathrow to Lambert-St Louis, Friday is the cheapest day to fly on average and Wednesday is the most expensive. Flying from Lambert-St Louis back to London Heathrow, the best deals are generally found on Tuesday, with Wednesday being the most expensive.

Book cheap flights from London Heathrow to Lambert-St Louis (round-trip)

Airports
Origin
London
$593
only
$593
Destination
St. Louis
$593
only
$593
Fri, Feb 16
LHR
STL
19h 17m
Sat, Feb 17
STL
LHR
28h 55m
Trip: 2 days
7.3GoodShow reviews
Overall 7.3 Good
Based on 14905 reviews
Overall
7.4
Boarding
7.6
Comfort
7.2
Crew
8.0
Entertainment
7.0
Food
6.9
LHR
ORD
Good 6.6

Flight on time, friendly crew.

Not so good meals. For a 9 long-haul flight only one meal provided, other was a cheap candy bar. Other carriers do offer breakfast. Traveled with child and did not allow priority boarding at LHR. Limited leg room, I assume this already a trend well known by travelers.

LHR
DFW
Excellent 10.0

I arrived safely and on time.....good movie selection

Breakfast out of London was not appealing - eggs not tasty and potatoes mushy and lacking in taste.

IAD
LHR
Good 6.0

General sense of management and professionalism, punctuality.

Lack of attention to detail and general frugality

PHL
BWI
Excellent 8.5

Very rapid flight. Landed far before scheduled arrival(at least 25 minutes). Checked baggage was delivered before schedule arrival time. Crew was pleasant/helpful.

Flight was changed from what was originally scheduled and purchased. I was informed of the change after the purchase before traveling. Thus I had 4 1/2 hours between flights.

LHR
JFK
Mediocre 3.6

Nothing about wheelchairs

When arrived they don't take wheelchairs

Thu, May 24
LHR
STL
13h 20m
Mon, May 28
STL
LHR
15h 15m
Trip: 5 days
Overall 0.0 Poor
Based on 0 reviews
Wed, Jan 24
LHR
STL
12h 22m
Wed, Feb 7
STL
LHR
13h 05m
Trip: 15 days
8.0ExcellentShow reviews
Overall 8.0 Excellent
Based on 1022 reviews
Overall
8.1
Boarding
8.3
Comfort
7.8
Crew
8.5
Entertainment
8.0
Food
7.8
LHR
BOS
Okay 5.0

We haven’t possiblyty to check in online. Crew smell was terrible, ladies used some perfume, some people was allergic to it

LHR
SFO
Excellent 10.0

So much food!! They kept bringing food out the whole flight..The seats were great. It was a very comfortable flight

no complaints whatsoever!

MEL
LAX
Excellent 8.0

These seats are small

LHR
LOS
Excellent 9.0

The personal care and attention.

Old movies and few entertainment choices

LHR
SEA
Excellent 9.2

Free everything...food, wine, spirits, movies, etc. Nice crew!

Seats a little hard, main dinner dish was a little odd but okay.

Thu, Mar 1
LHR
STL
24h 16m
Mon, Mar 5
STL
LHR
44h 55m
Trip: 5 days
7.2GoodShow reviews
Overall 7.2 Good
Based on 5185 reviews
Overall
7.3
Boarding
7.3
Comfort
7.3
Crew
7.7
Entertainment
7.1
Food
6.9
CUN
MEX
Excellent 9.0

Regardless of the problems I had. the ticket agent was nice and tried to find the best situation to please me and my family so we can all board into the same plane

MEX
GDL
Mediocre 2.0

I was flying to MEX from LAX and i had to get through customs which took a long time, but got to the Aeromexico ticket counter to get my boarding pass and they told me that they start boarding 45min before departure time and I got tot he counter at with 35 min to departure and they told me that I missed my flight and had to buy another flight which was two hours later. I don't understand why they couldn't let me through or hold for me. It ruin my ground transportation reservation which I had to reschedule. The whole thing was frustrating and cost me more money that what i thought i was saving.

SCL
MEX
Okay 5.0

They had good movies in the plane

There were two runways in Mexico City and one was under maintenance so it took a long time from the moment we landed to the time we were able to get out of the plane. Then, they took our check-in luggage from the plane and it went through an inspection (bag by bag), so this caused another hour delay. After that they gave us our check-in luggage for us to take it to another location (to another floor) within the airport to be checked-in again. They wanted to charge us $20.00 additional per check-in bag even though they were half of the weight limit. After we complained, they dropped this charge. Due to all the delays we lost our connection and we had to book another flight. Not a good experience. We will never make a stop in Mexico in the future.

MEX
MCO
Okay 5.0

They had good movies in the plane

There were two runways in Mexico City and one was under maintenance so it took a long time from the moment we landed to the time we were able to get out of the plane. Then, they took our check-in luggage from the plane and it went through an inspection (bag by bag), so this caused another hour delay. After that they gave us our check-in luggage for us to take it to another location (to another floor) within the airport to be checked-in again. They wanted to charge us $20.00 additional per check-in bag even though they were half of the weight limit. After we complained, they dropped this charge. Due to all the delays we lost our connection and we had to book another flight. Not a good experience. We will never make a stop in Mexico in the future.

LIM
MEX
Okay 5.0

Lots of newer movies to watch.

Gross food, ended up in the safety exit seat so couldn’t have anything with me.. not even my pillow and the seats can’t recline. Most uncomfortable flight ever ...

Wed, Jan 24
LHR
STL
17h 44m
Thu, Feb 8
STL
LHR
26h 15m
$1090
Trip: 16 days
7.0GoodShow reviews
Overall 7.0 Good
Based on 1473 reviews
Overall
7.1
Boarding
7.1
Comfort
7.0
Crew
7.7
Entertainment
6.5
Food
6.4
BRU
BUD
Excellent 8.0

Ease of boarding, reasonably comfortable seats on a short flight.

No liquids (soda, coffee, water) offered.

BRU
BOD
Mediocre 2.0

I never boarded Brussels airlines. United Airlines put me on TAP or TP which I did like. But my luggage wasn’t forwarded until the 15th dec. Brussels had many natural disasters. My problems I believe were with either United Airlines or Swissport Luggage department

TXL
BRU
Excellent 8.0

Also a good airline, though the a la cart...

The a la carte approach that includes charging 3 euros for water. I mean, seriously?

JFK
BRU
Good 6.0

Nice planes

My luggage was lost and I still haven't received it

TLV
BRU
Okay 5.0

Crew was polite, but...

The flight attendants seemed unused to the idea that Orthodox Jews won't sit beside people of the opposite sex. This made boarding take longer than it needed to. The airline should figure out a way to streamline this process on flights to/from Tel Aviv.

Sat, Feb 17
LHR
STL
15h 17m
Sun, Feb 18
STL
LHR
10h 53m
Trip: 2 days
7.3GoodShow reviews
Overall 7.3 Good
Based on 14905 reviews
Overall
7.4
Boarding
7.6
Comfort
7.2
Crew
8.0
Entertainment
7.0
Food
6.9
LHR
JFK
Excellent 8.0

Flight wasn’t full so it was great to be able to stretch out!

One older cabin female attendant was quite arrogant - otherwise all good!

LHR
TLV
Okay 5.6

the staff

aircraft, food, entertainment

SEA
LHR
Excellent 8.0

Quality of food

LHR
FCO
Excellent 10.0

Friendly crew. Good day in the skies.

LHR
ORD
Good 6.6

Flight on time, friendly crew.

Not so good meals. For a 9 long-haul flight only one meal provided, other was a cheap candy bar. Other carriers do offer breakfast. Traveled with child and did not allow priority boarding at LHR. Limited leg room, I assume this already a trend well known by travelers.

Fri, Feb 16
LHR
STL
32h 44m
Sun, Feb 18
STL
LHR
30h 25m
Trip: 3 days
7.3GoodShow reviews
Overall 7.3 Good
Based on 14905 reviews
Overall
7.4
Boarding
7.6
Comfort
7.2
Crew
8.0
Entertainment
7.0
Food
6.9
LHR
NBO
Okay 5.0

Boarding, friendly people in London and Hamburg

Flight attendants, plane, food

ORD
LHR
Excellent 9.3

the first flight from Chicago to London was great. very good aircraft.

LHR
TLV
Okay 5.6

the staff

aircraft, food, entertainment

AUH
LHR
Excellent 10.0

I arrived safely and on time

Audio plug for my seat was broken, but I slept so it worked out Kay.

LHR
DFW
Excellent 10.0

I arrived safely and on time.....good movie selection

Breakfast out of London was not appealing - eggs not tasty and potatoes mushy and lacking in taste.

Tue, May 29
LHR
STL
13h 20m
Tue, Jun 26
STL
LHR
15h 15m
Trip: 29 days
Overall 0.0 Poor
Based on 0 reviews
Sat, Feb 17
LHR
STL
12h 24m
Mon, Feb 26
STL
LHR
10h 53m
Trip: 10 days
7.3GoodShow reviews
Overall 7.3 Good
Based on 14905 reviews
Overall
7.4
Boarding
7.6
Comfort
7.2
Crew
8.0
Entertainment
7.0
Food
6.9
ORD
LHR
Excellent 9.3

the first flight from Chicago to London was great. very good aircraft.

IAD
LHR
Good 6.0

General sense of management and professionalism, punctuality.

Lack of attention to detail and general frugality

PHL
BWI
Excellent 8.5

Very rapid flight. Landed far before scheduled arrival(at least 25 minutes). Checked baggage was delivered before schedule arrival time. Crew was pleasant/helpful.

Flight was changed from what was originally scheduled and purchased. I was informed of the change after the purchase before traveling. Thus I had 4 1/2 hours between flights.

LHR
NBO
Okay 5.0

Boarding, friendly people in London and Hamburg

Flight attendants, plane, food

LHR
TLV
Okay 5.6

the staff

aircraft, food, entertainment

Mon, Feb 12
LHR
STL
11h 22m
Sun, Feb 18
STL
LHR
10h 53m
Trip: 7 days
7.3GoodShow reviews
Overall 7.3 Good
Based on 14905 reviews
Overall
7.4
Boarding
7.6
Comfort
7.2
Crew
8.0
Entertainment
7.0
Food
6.9
LHR
NBO
Okay 5.0

Boarding, friendly people in London and Hamburg

Flight attendants, plane, food

LHR
JFK
Excellent 8.0

Flight wasn’t full so it was great to be able to stretch out!

One older cabin female attendant was quite arrogant - otherwise all good!

LHR
ORD
Good 6.6

Flight on time, friendly crew.

Not so good meals. For a 9 long-haul flight only one meal provided, other was a cheap candy bar. Other carriers do offer breakfast. Traveled with child and did not allow priority boarding at LHR. Limited leg room, I assume this already a trend well known by travelers.

AUH
LHR
Excellent 10.0

I arrived safely and on time

Audio plug for my seat was broken, but I slept so it worked out Kay.

ORD
LHR
Excellent 9.3

the first flight from Chicago to London was great. very good aircraft.

Sat, Feb 17
LHR
STL
14h 47m
Sun, Mar 4
STL
LHR
10h 35m
Trip: 16 days
8.0ExcellentShow reviews
Overall 8.0 Excellent
Based on 1022 reviews
Overall
8.1
Boarding
8.3
Comfort
7.8
Crew
8.5
Entertainment
8.0
Food
7.8
LHR
SFO
Excellent 10.0

So much food!! They kept bringing food out the whole flight..The seats were great. It was a very comfortable flight

no complaints whatsoever!

BOS
LHR
Excellent 9.6

Francesca was the flight attende t that I had most the most interactions with was very friendly and warm.

JFK
LHR
Mediocre 2.0

They switched my gate 5 times and lost my baggage.

LHR
SEA
Excellent 9.2

Free everything...food, wine, spirits, movies, etc. Nice crew!

Seats a little hard, main dinner dish was a little odd but okay.

LHR
SFO
Excellent 8.0

Quality of service was good in the plane

Not many good recent movies / shows on in flight entertainment. Food was okay. But, the quantity was too little. It took a really long time for a second boarding pass check at London airport. Other airlines don't usually ask for a second check in

Thu, May 24
LHR
STL
13h 20m
Thu, May 31
STL
LHR
19h 57m
Trip: 8 days
Overall 0.0 Poor
Based on 0 reviews
Sat, Feb 17
LHR
STL
26h 37m
Thu, Mar 1
STL
LHR
42h 05m
Trip: 13 days
7.2GoodShow reviews
Overall 7.2 Good
Based on 5185 reviews
Overall
7.3
Boarding
7.3
Comfort
7.3
Crew
7.7
Entertainment
7.1
Food
6.9
LAX
MEX
Excellent 10.0

Todo estuvo muy bien !!! Fue un viaje placentero !!!

N/A

CUN
MEX
Excellent 9.0

Regardless of the problems I had. the ticket agent was nice and tried to find the best situation to please me and my family so we can all board into the same plane

GDL
LAX
Mediocre 2.6

they take forever to get to the unloading dock

MEX
GDL
Mediocre 2.0

I was flying to MEX from LAX and i had to get through customs which took a long time, but got to the Aeromexico ticket counter to get my boarding pass and they told me that they start boarding 45min before departure time and I got tot he counter at with 35 min to departure and they told me that I missed my flight and had to buy another flight which was two hours later. I don't understand why they couldn't let me through or hold for me. It ruin my ground transportation reservation which I had to reschedule. The whole thing was frustrating and cost me more money that what i thought i was saving.

MTY
MEX
Good 6.0

Delayed as usual, 1 hour flight tend to be 2 hours in the airplane. Turbulence

Sat, Jan 20
LHR
STL
16h 22m
Mon, Jan 29
STL
LHR
14h 35m
Trip: 10 days
8.0ExcellentShow reviews
Overall 8.0 Excellent
Based on 1022 reviews
Overall
8.1
Boarding
8.3
Comfort
7.8
Crew
8.5
Entertainment
8.0
Food
7.8
LHR
LOS
Excellent 9.0

The personal care and attention.

Old movies and few entertainment choices

LAX
LHR
Excellent 9.6

Nice airline, great crew and service.

Leg room and space was great but the seats could use some more cushion.

LHR
SEA
Excellent 9.2

Free everything...food, wine, spirits, movies, etc. Nice crew!

Seats a little hard, main dinner dish was a little odd but okay.

JFK
LHR
Okay 4.0

Once In London, we were told by British Airways that was flying us to Nice that Delta had “lost” our infant electronic ticket - It took 1.5h to get new ticket reissued! We missed our connection and had to wait 3 more hours for the next flight - We were somewhat lucky as multiple flights were delayed/cancelled that day - I will avoid using Virgin Atlantic in the future as they need Delta and British operate their flights and this makes it prone to issues like that

LHR
SFO
Excellent 10.0

So much food!! They kept bringing food out the whole flight..The seats were great. It was a very comfortable flight

no complaints whatsoever!

Tue, May 29
LHR
STL
13h 20m
Thu, Jun 28
STL
LHR
15h 15m
Trip: 31 days
Overall 0.0 Poor
Based on 0 reviews
Wed, Jan 24
LHR
STL
31h 41m
Fri, Jan 26
STL
LHR
33h 15m
Trip: 3 days
8.0ExcellentShow reviews
Overall 8.0 Excellent
Based on 1022 reviews
Overall
8.1
Boarding
8.3
Comfort
7.8
Crew
8.5
Entertainment
8.0
Food
7.8
LHR
BOS
Okay 5.0

We haven’t possiblyty to check in online. Crew smell was terrible, ladies used some perfume, some people was allergic to it

LHR
SFO
Excellent 8.0

Quality of service was good in the plane

Not many good recent movies / shows on in flight entertainment. Food was okay. But, the quantity was too little. It took a really long time for a second boarding pass check at London airport. Other airlines don't usually ask for a second check in

EWR
LHR
Okay 4.3

The onboard crew were lovely.

Stood at check in for over 30 mins with no staff in sight. Boarding was a disaster. Staff was not prepared nor organized and the crowds were unbearable. Upgraded seats were laughable and not worth an extra $60. Food was mediocre. Entertainment would have been good but GE touchscreens are so old, they were difficult to work.

LAX
LHR
Excellent 9.6

Nice airline, great crew and service.

Leg room and space was great but the seats could use some more cushion.

JFK
LHR
Mediocre 2.0

They switched my gate 5 times and lost my baggage.

Sat, Jan 20
LHR
STL
12h 09m
Sat, Feb 10
STL
LHR
10h 57m
Trip: 22 days
7.3GoodShow reviews
Overall 7.3 Good
Based on 14905 reviews
Overall
7.4
Boarding
7.6
Comfort
7.2
Crew
8.0
Entertainment
7.0
Food
6.9
SEA
LHR
Excellent 8.0

Quality of food

IAD
LHR
Good 6.0

General sense of management and professionalism, punctuality.

Lack of attention to detail and general frugality

ORD
LHR
Excellent 9.3

the first flight from Chicago to London was great. very good aircraft.

LHR
JFK
Excellent 8.0

Flight wasn’t full so it was great to be able to stretch out!

One older cabin female attendant was quite arrogant - otherwise all good!

PHL
BWI
Excellent 8.5

Very rapid flight. Landed far before scheduled arrival(at least 25 minutes). Checked baggage was delivered before schedule arrival time. Crew was pleasant/helpful.

Flight was changed from what was originally scheduled and purchased. I was informed of the change after the purchase before traveling. Thus I had 4 1/2 hours between flights.

Mon, Mar 12
LHR
STL
27h 54m
Wed, Mar 28
STL
LHR
13h 05m
Trip: 17 days
Overall 0.0 Poor
Based on 0 reviews
Wed, May 30
LHR
STL
12h 09m
Sat, Jun 30
STL
LHR
10h 40m
$1057
Trip: 32 days
8.0ExcellentShow reviews
Overall 8.0 Excellent
Based on 1022 reviews
Overall
8.1
Boarding
8.3
Comfort
7.8
Crew
8.5
Entertainment
8.0
Food
7.8
MEL
LAX
Excellent 8.0

These seats are small

EWR
LHR
Okay 4.3

The onboard crew were lovely.

Stood at check in for over 30 mins with no staff in sight. Boarding was a disaster. Staff was not prepared nor organized and the crowds were unbearable. Upgraded seats were laughable and not worth an extra $60. Food was mediocre. Entertainment would have been good but GE touchscreens are so old, they were difficult to work.

LHR
BOS
Okay 5.0

We haven’t possiblyty to check in online. Crew smell was terrible, ladies used some perfume, some people was allergic to it

BOS
LHR
Excellent 9.6

Francesca was the flight attende t that I had most the most interactions with was very friendly and warm.

LAX
LHR
Excellent 9.6

Nice airline, great crew and service.

Leg room and space was great but the seats could use some more cushion.

Wed, Jan 24
LHR
STL
12h 24m
Fri, Feb 2
STL
LHR
12h 00m
Trip: 10 days
Overall 0.0 Poor
Based on 0 reviews
Show more results

London Heathrow to Lambert-St Louis Flight Information

Flights Arrive in Lambert-St Louis
Flights Depart from London Heathrow
Flight Price $593
Distance 4190 miles
Airlines British Airways, Virgin Atlantic, Aeromexico, Brussels Airlines
*
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The fares displayed include all taxes and fees for economy class travel and were found by the provider in the last 72 hours. Seats are limited and may not be available on all flights and days. Fares are subject to change and may not be available on all flights or dates of travel. Some carriers charge additional fees for extra checked bags. Please check the carriers' sites.