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Cheap flights from St. Louis to London from $337

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from St. Louis to London departing on 9/15. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

Find the cheapest flights from St. Louis to London

Cheap round-trip flights

Enter your travel dates to find the best prices.
Delta Logo
10:45 am - 7:55 am
STL
-
LCY
15h 10m
2 stops
Delta Logo
10:00 am - 8:31 pm
LCY
-
STL
16h 31m
2 stops
$897Delta
Sun, Sep 6 - Thu, Sep 17
Delta Logo
1:30 pm - 8:50 am
STL
-
LCY
13h 20m
2 stops
Delta Logo
9:20 am - 8:50 pm
LCY
-
STL
17h 30m
2 stops
$898Delta
Wed, Sep 2 - Fri, Sep 11
Delta Logo
10:45 am - 7:55 am
STL
-
LCY
15h 10m
2 stops
Delta Logo
10:00 am - 8:50 pm
LCY
-
STL
16h 50m
2 stops
$968Delta
Wed, Sep 2 - Fri, Sep 11
Delta Logo
10:45 am - 7:55 am
STL
-
LCY
15h 10m
2 stops
Delta Logo
10:00 am - 8:50 pm
LCY
-
STL
16h 50m
2 stops
$969Delta
Wed, Sep 2 - Fri, Sep 11
Delta Logo
4:13 pm - 11:40 am
STL
-
LCY
13h 27m
2 stops
Delta Logo
10:00 am - 8:50 pm
LCY
-
STL
16h 50m
2 stops
$997Delta
Fri, Sep 11 - Sat, Sep 19
Delta Logo
2:18 pm - 9:30 am
STL
-
LCY
13h 12m
2 stops
Delta Logo
10:00 am - 8:50 pm
LCY
-
STL
16h 50m
2 stops
$998Delta
Thu, Aug 27 - Mon, Aug 31
Delta Logo
2:18 pm - 9:30 am
STL
-
LCY
13h 12m
2 stops
Delta Logo
8:40 am - 8:37 pm
LCY
-
STL
17h 57m
2 stops
$1,018Delta
Tue, Aug 25 - Sat, Dec 12
Lufthansa Logo
3:30 pm - 5:55 pm
STL
-
LCY
20h 25m
1 stop
Lufthansa Logo
9:15 am - 11:00 pm
LCY
-
STL
19h 45m
2 stops
$1,034Lufthansa
Wed, Aug 19 - Fri, Aug 28
Lufthansa Logo
3:30 pm - 5:55 pm
STL
-
LCY
20h 25m
1 stop
Lufthansa Logo
9:15 am - 11:00 pm
LCY
-
STL
19h 45m
2 stops
$1,035Lufthansa
Tue, Sep 1 - Thu, Sep 10
Lufthansa Logo
6:55 pm - 5:55 pm
STL
-
LCY
17h 00m
2 stops
Lufthansa Logo
9:15 am - 11:00 pm
LCY
-
STL
19h 45m
2 stops
$1,039Lufthansa
Tue, Sep 1 - Thu, Sep 10

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KLM flights from St. Louis to London City Airport

Our best KLM deals on St. Louis to London City Airport flight tickets
KLM
May 14
STL11:25 amLambert-St Louis
15h 25m
2 stops
LCY8:50 amLondon City
Jun 12
LCY10:00 amLondon City
16h 39m
2 stops
STL8:39 pmLambert-St Louis
$1,341
KLM
May 15
STL11:25 amLambert-St Louis
14h 30m
2 stops
LCY7:55 amLondon City
Jun 6
LCY8:25 amLondon City
18h 44m
2 stops
STL9:09 pmLambert-St Louis
$1,401
KLM
May 15
STL11:25 amLambert-St Louis
16h 05m
2 stops
LCY9:30 amLondon City
Jun 6
LCY8:25 amLondon City
18h 44m
2 stops
STL9:09 pmLambert-St Louis
$1,402

British Airways flights from St. Louis to London City Airport

Our best British Airways deals on St. Louis to London City Airport flight tickets
British Airways
May 25
STL1:45 pmLambert-St Louis
17h 35m
2 stops
LCY1:20 pmLondon City
Jun 1
LCY7:00 pmLondon City
34h 59m
2 stops
STL11:59 pmLambert-St Louis
$1,396
British Airways
May 24
STL7:50 pmLambert-St Louis
35h 30m
2 stops
LCY1:20 pmLondon City
May 31
LCY7:35 pmLondon City
34h 24m
2 stops
STL11:59 pmLambert-St Louis
$1,462

momondo Fare Finder

 
Customize your flight search to find flights from St. Louis to London City Airport that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated April 30, 2026.
Use the filters below to find and compare flights from St. Louis to London City Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

St. LouisLondon

STL - LCY

STLLCY

Lambert-St Louis

Sun 9/6

10:45 am-7:55 am

2 stops15h 10m

London City

Thu 9/17

10:00 am-8:31 pm

2 stops16h 31m

$897

St. LouisLondon

STL - LCY

STLLCY

Lambert-St Louis

Wed 9/2

1:30 pm-8:50 am

2 stops13h 20m

London City

Fri 9/11

9:20 am-8:50 pm

2 stops17h 30m

$898

St. LouisLondon

STL - LCY

STLLCY

Lambert-St Louis

Wed 9/2

10:45 am-7:55 am

2 stops15h 10m

London City

Fri 9/11

10:00 am-8:50 pm

2 stops16h 50m

$968

St. LouisLondon

STL - LCY

STLLCY

Lambert-St Louis

Wed 9/2

10:45 am-7:55 am

2 stops15h 10m

London City

Fri 9/11

10:00 am-8:50 pm

2 stops16h 50m

$969

St. LouisLondon

STL - LCY

STLLCY

Lambert-St Louis

Fri 9/11

4:13 pm-11:40 am

2 stops13h 27m

London City

Sat 9/19

10:00 am-8:50 pm

2 stops16h 50m

$997
Quickest round-trip

St. LouisLondon

STL - LCY

STLLCY

Lambert-St Louis

Thu 8/27

2:18 pm-9:30 am

2 stops13h 12m

London City

Mon 8/31

10:00 am-8:50 pm

2 stops16h 50m

$998

St. LouisLondon

STL - LCY

STLLCY

Lambert-St Louis

Tue 8/25

2:18 pm-9:30 am

2 stops13h 12m

London City

Sat 12/12

8:40 am-8:37 pm

2 stops17h 57m

$1,018

St. LouisLondon

STL - LCY

STLLCY

Lambert-St Louis

Wed 8/19

3:30 pm-5:55 pm

1 stop20h 25m

London City

Fri 8/28

9:15 am-11:00 pm

2 stops19h 45m

$1,034

St. LouisLondon

STL - LCY

STLLCY

Lambert-St Louis

Tue 9/1

3:30 pm-5:55 pm

1 stop20h 25m

London City

Thu 9/10

9:15 am-11:00 pm

2 stops19h 45m

$1,035

St. LouisLondon

STL - LCY

STLLCY

Lambert-St Louis

Tue 9/1

6:55 pm-5:55 pm

2 stops17h 00m

London City

Thu 9/10

9:15 am-11:00 pm

2 stops19h 45m

$1,039

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to London from

How to get the cheapest flight ticket from St. Louis to London City Airport

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Can stopping save me money on St. Louis to London City Airport flights?

You could potentially save up to 53% on your flight if you consider stops on a St. Louis to London City Airport flight.

When to book flights from St. Louis to London City Airport

Are you open to changing your travel dates? Check out the ideal times to fly from St. Louis to London City Airport according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap St. Louis to London City Airport (STL to LCY) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from St. Louis to London City Airport

Fastest flight time

13h 12m

Direct flights

None
The fastest flight from St. Louis to London City Airport takes 13h 12m
There are no direct flights from St. Louis to London City Airport. There are no popular flight routes from St. Louis to London City Airport.
Search flight deals

Frequently asked questions about flying from St. Louis to London City Airport

  • How far is Lambert-St Louis to London City by plane?

    A flight from Lambert-St Louis to London City will travel around 4204.2 mi. By plane, this route typically takes 13h 12m.

  • When did momondo last update prices for flights from Lambert-St Louis Airport to London City Airport?

    Prices for flights from Lambert-St Louis Airport to London City Airport were last updated today.

  • How old do you have to be to fly from Lambert-St Louis Airport to London City Airport?

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Lambert-St Louis Airport to London City Airport.

  • What documentation or ID do you need to fly to London City Airport?

    The necessary travel and health documents for your London City Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

Traveling to a place near London?

Book flights to London if you plan to visit one of these locations
Hounslow
Gatwick
Milton Keynes
Dover
Luton
Hayes
Crawley
Slough
Wembley
Stansted
Watford
Croydon
Uxbridge
Brentwood
Dartford
Cobham
Folkestone
Romford
Harrow
Guildford

Why use momondo?

Why should I use momondo to find a flight deal from St. Louis to London?

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from St. Louis to London for you.

Can I find flights from St. Louis to London with flexible booking policies on momondo?

Flights from St. Louis to London with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

How can momondo help me find flights from St. Louis to London?

Once you have performed a search for St. Louis to London flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

I’m not ready to book a flight from St. Louis to London right now. Can momondo alert me if prices change?

Yes momondo offers price alerts on flights to London from St. Louis. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

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