Latest deals
Insights
When to book
FAQs
Price Alerts

Cheap flights from St. Louis to London from $438

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 5/1. 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
1 adult, Economy, 0 bags

Save money when you book flights with momondo

Big names and deals

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

Find the cheapest flights from St. Louis to London

Cheap round-trip flights

Enter your travel dates to find the best prices.
Delta Logo
6:32 am - 4:40 pm
STL
-
LCY
28h 08m
2 stops
Delta Logo
10:00 am - 2:29 pm
LCY
-
STL
34h 29m
2 stops
$757Delta
Sun, Apr 5 - Tue, Apr 14
Delta Logo
6:32 am - 9:45 am
STL
-
LCY
21h 13m
2 stops
Delta Logo
9:20 am - 11:39 am
LCY
-
STL
56h 19m
2 stops
$763Delta
Sun, Apr 5 - Mon, Apr 13
Iberia Logo
12:55 pm - 8:35 am
STL
-
LCY
37h 40m
2 stops
Iberia Logo
7:15 pm - 10:17 pm
LCY
-
STL
33h 02m
2 stops
$771Iberia
Wed, Apr 15 - Wed, Apr 22
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
$778Lufthansa
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
$780Lufthansa
Wed, Aug 19 - Fri, Aug 28
Lufthansa Logo
7:09 pm - 5:55 pm
STL
-
LCY
16h 46m
2 stops
Lufthansa Logo
9:15 am - 10:56 pm
LCY
-
STL
19h 41m
2 stops
$782Lufthansa
Tue, May 5 - Tue, May 19
Lufthansa Logo
6:35 pm - 5:55 pm
STL
-
LCY
17h 20m
2 stops
Lufthansa Logo
9:15 am - 11:11 pm
LCY
-
STL
19h 56m
2 stops
$783Lufthansa
Mon, Mar 30 - Wed, Apr 8
Lufthansa Logo
6:55 pm - 5:55 pm
STL
-
LCY
17h 00m
2 stops
Lufthansa Logo
9:15 am - 11:11 pm
LCY
-
STL
19h 56m
2 stops
$784Lufthansa
Tue, Apr 7 - Wed, Apr 15
Lufthansa Logo
6:55 pm - 5:55 pm
STL
-
LCY
17h 00m
2 stops
Lufthansa Logo
9:15 am - 3:48 pm
LCY
-
STL
36h 33m
2 stops
$790Lufthansa
Tue, Apr 7 - Thu, Apr 16
Lufthansa Logo
6:55 pm - 5:55 pm
STL
-
LCY
17h 00m
2 stops
Lufthansa Logo
9:15 am - 1:25 pm
LCY
-
STL
34h 10m
1 stop
$794Lufthansa
Tue, Apr 7 - Tue, Apr 14

Delta flights from St. Louis to London City Airport

Our best Delta deals on St. Louis to London City Airport flight tickets
Delta
Apr 5
STL6:32 amLambert-St Louis
28h 08m
2 stops
LCY4:40 pmLondon City
Apr 14
LCY10:00 amLondon City
34h 29m
2 stops
STL2:29 pmLambert-St Louis
$757
Delta
Apr 5
STL6:32 amLambert-St Louis
21h 13m
2 stops
LCY9:45 amLondon City
Apr 13
LCY9:20 amLondon City
56h 19m
2 stops
STL11:39 amLambert-St Louis
$763
Delta
Aug 19
STL2:18 pmLambert-St Louis
13h 12m
2 stops
LCY9:30 amLondon City
Aug 28
LCY10:00 amLondon City
16h 50m
2 stops
STL8:50 pmLambert-St Louis
$807

Iberia flights from St. Louis to London City Airport

Our best Iberia deals on St. Louis to London City Airport flight tickets
Iberia
Apr 15
STL12:55 pmLambert-St Louis
37h 40m
2 stops
LCY8:35 amLondon City
Apr 22
LCY7:15 pmLondon City
33h 02m
2 stops
STL10:17 pmLambert-St Louis
$771
Iberia
Apr 22
STL2:33 pmLambert-St Louis
36h 02m
2 stops
LCY8:35 amLondon City
Apr 27
LCY7:15 pmLondon City
30h 18m
2 stops
STL7:33 pmLambert-St Louis
$797
Iberia
Apr 22
STL12:27 pmLambert-St Louis
38h 08m
2 stops
LCY8:35 amLondon City
Apr 27
LCY7:15 pmLondon City
30h 18m
2 stops
STL7:33 pmLambert-St Louis
$871

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 March 13, 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 4/5

6:32 am-4:40 pm

2 stops28h 08m

London City

Tue 4/14

10:00 am-2:29 pm

2 stops34h 29m

$757

St. LouisLondon

STL - LCY

STLLCY

Lambert-St Louis

Sun 4/5

6:32 am-9:45 am

2 stops21h 13m

London City

Mon 4/13

9:20 am-11:39 am

2 stops56h 19m

$763

St. LouisLondon

STL - LCY

STLLCY

Lambert-St Louis

Wed 4/15

12:55 pm-8:35 am

2 stops37h 40m

London City

Wed 4/22

7:15 pm-10:17 pm

2 stops33h 02m

$771

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

$778

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

$780
Quickest round-trip

St. LouisLondon

STL - LCY

STLLCY

Lambert-St Louis

Tue 5/5

7:09 pm-5:55 pm

2 stops16h 46m

London City

Tue 5/19

9:15 am-10:56 pm

2 stops19h 41m

$782

St. LouisLondon

STL - LCY

STLLCY

Lambert-St Louis

Mon 3/30

6:35 pm-5:55 pm

2 stops17h 20m

London City

Wed 4/8

9:15 am-11:11 pm

2 stops19h 56m

$783

St. LouisLondon

STL - LCY

STLLCY

Lambert-St Louis

Tue 4/7

6:55 pm-5:55 pm

2 stops17h 00m

London City

Wed 4/15

9:15 am-11:11 pm

2 stops19h 56m

$784

St. LouisLondon

STL - LCY

STLLCY

Lambert-St Louis

Tue 4/7

6:55 pm-5:55 pm

2 stops17h 00m

London City

Thu 4/16

9:15 am-3:48 pm

2 stops36h 33m

$790

St. LouisLondon

STL - LCY

STLLCY

Lambert-St Louis

Tue 4/7

6:55 pm-5:55 pm

2 stops17h 00m

London City

Tue 4/14

9:15 am-1:25 pm

1 stop34h 10m

$794

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

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

What is the cheapest airline that flies from Lambert-St Louis to London City?

Delta, Lufthansa, and United Airlines are the most popular carriers operating from Lambert-St Louis to London City

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 25m

Direct flights

None
The fastest flight from St. Louis to London City Airport takes 13h 25m
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

  • 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 25m.

  • 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
Gatwick
Hounslow
Milton Keynes
Luton
Dover
Slough
Crawley
Hayes
Wembley
Dartford
Croydon
Brentwood
Harrow
Watford
Guildford
Stansted
Cobham
Folkestone
Romford
Richmond

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.

An easier way to manage your London City Airport trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Sun 4/12
Sun 4/19
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to London

Popular cities in the United Kingdom

Popular flights according to clicks in the last 7 days on momondo
Flights to London Heathrow Airportfrom $412
Flights to London Gatwick Airportfrom $414
Flights to London Stansted Airportfrom $348
Flights to London Luton Airportfrom $353
Flights to Glasgow Intl Airportfrom $494
Flights to Belfast Intl Airportfrom $621
Flights to London Southend Airportfrom $587
Flights to Belfast City Airportfrom $651