Latest deals
Insights
FAQs
Reviews
Price Alerts

Cheap flights from St. Louis to the United Kingdom from £158

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 the United Kingdom departing on 20/3. 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

Discover deals from 900+ travel sites with momondo.

Voted winner of Europe's Best Travel App 2023

Save money when you book flights with momondo

Big names, great deals

Big names, great deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customise 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 the United Kingdom

Cheap return flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
14:19 - 11:45
STL
-
MAN
15h 26m
2 stops
Multiple Airlines Logo
18:20 - 10:59
MAN
-
STL
21h 39m
2 stops
£456Multiple Airlines
Mon, 2 Mar - Mon, 9 Mar
British Airways Logo
16:30 - 16:10
STL
-
GLA
17h 40m
2 stops
British Airways Logo
20:50 - 19:30
GLA
-
STL
28h 40m
1 stop
£458British Airways
Mon, 13 Apr - Mon, 20 Apr
KLM Logo
11:55 - 07:50
STL
-
LHR
13h 55m
1 stop
KLM Logo
20:25 - 16:32
LHR
-
STL
25h 07m
2 stops
£460KLM
Mon, 2 Mar - Mon, 9 Mar
British Airways Logo
16:30 - 14:35
STL
-
EDI
16h 05m
2 stops
British Airways Logo
10:25 - 19:30
EDI
-
STL
15h 05m
1 stop
£460British Airways
Tue, 21 Apr - Tue, 28 Apr
British Airways Logo
13:29 - 12:30
STL
-
GLA
17h 01m
2 stops
British Airways Logo
07:30 - 19:33
GLA
-
STL
18h 03m
2 stops
£460British Airways
Wed, 8 Apr - Wed, 15 Apr
Lufthansa Logo
18:55 - 18:35
STL
-
LHR
17h 40m
2 stops
Lufthansa Logo
06:30 - 18:00
LHR
-
STL
16h 30m
2 stops
£462Lufthansa
Sun, 1 Mar - Fri, 13 Mar
Lufthansa Logo
18:55 - 11:15
STL
-
LHR
10h 20m
1 stop
Lufthansa Logo
06:30 - 13:55
LHR
-
STL
13h 25m
1 stop
£465Lufthansa
Mon, 23 Feb - Wed, 4 Mar
Virgin Atlantic Logo
18:47 - 11:40
STL
-
LHR
10h 53m
1 stop
Virgin Atlantic Logo
15:50 - 23:36
LHR
-
STL
13h 46m
1 stop
£467Virgin Atlantic
Mon, 23 Feb - Wed, 4 Mar
American Airlines Logo
18:57 - 19:40
STL
-
INV
18h 43m
2 stops
American Airlines Logo
11:45 - 08:55
INV
-
STL
27h 10m
2 stops
£478American Airlines
Thu, 19 Feb - Thu, 26 Feb
American Airlines Logo
18:57 - 19:40
STL
-
INV
18h 43m
2 stops
American Airlines Logo
11:45 - 08:55
INV
-
STL
27h 10m
2 stops
£478American Airlines
Thu, 19 Feb - Thu, 26 Feb

KLM flights from St. Louis to United Kingdom

Our best KLM deals on St. Louis to United Kingdom flight tickets
KLM
2 Mar
STL11:55Lambert-St Louis
13h 55m
1 stop
LHR07:50London Heathrow
9 Mar
LHR20:25London Heathrow
25h 07m
2 stops
STL16:32Lambert-St Louis
£460
KLM
9 Feb
STL12:00Lambert-St Louis
16h 10m
2 stops
MAN10:10Manchester
13 Feb
MAN13:25Manchester
13h 16m
1 stop
STL20:41Lambert-St Louis
£875

Virgin Atlantic flights from St. Louis to United Kingdom

Our best Virgin Atlantic deals on St. Louis to United Kingdom flight tickets
Virgin Atlantic
23 Feb
STL18:47Lambert-St Louis
10h 53m
1 stop
LHR11:40London Heathrow
4 Mar
LHR15:50London Heathrow
13h 46m
1 stop
STL23:36Lambert-St Louis
£467
Virgin Atlantic
23 Feb
STL10:13Lambert-St Louis
14h 37m
2 stops
LHR06:50London Heathrow
4 Mar
LHR10:00London Heathrow
16h 43m
2 stops
STL20:43Lambert-St Louis
£473
Virgin Atlantic
3 Mar
STL11:55Lambert-St Louis
12h 30m
1 stop
LHR06:25London Heathrow
10 Mar
LHR13:00London Heathrow
12h 42m
1 stop
STL20:42Lambert-St Louis
£477

momondo Fare Finder

 
Customise your flight search to find flights from St. Louis to United Kingdom 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 279,928 searches. Data last updated 4 February 2026.
Use the filters below to find and compare flights from St. Louis to the United Kingdom that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

St. LouisManchester

STL - MAN

STLMAN

Lambert-St Louis

Mon 2/3

14:19-11:45

2 stops15h 26m

Manchester

Mon 9/3

18:20-10:59

2 stops21h 39m

£456

St. LouisGlasgow

STL - GLA

STLGLA

Lambert-St Louis

Mon 13/4

16:30-16:10

2 stops17h 40m

Glasgow Intl

Mon 20/4

20:50-19:30

1 stop28h 40m

£458

St. LouisLondon

STL - LHR

STLLHR

Lambert-St Louis

Mon 2/3

11:55-07:50

1 stop13h 55m

London Heathrow

Mon 9/3

20:25-16:32

2 stops25h 07m

£460

St. LouisEdinburgh

STL - EDI

STLEDI

Lambert-St Louis

Tue 21/4

16:30-14:35

2 stops16h 05m

Edinburgh Turnhouse

Tue 28/4

10:25-19:30

1 stop15h 05m

£460

St. LouisGlasgow

STL - GLA

STLGLA

Lambert-St Louis

Wed 8/4

13:29-12:30

2 stops17h 01m

Glasgow Intl

Wed 15/4

07:30-19:33

2 stops18h 03m

£460

St. LouisLondon

STL - LHR

STLLHR

Lambert-St Louis

Sun 1/3

18:55-18:35

2 stops17h 40m

London Heathrow

Fri 13/3

06:30-18:00

2 stops16h 30m

£462

St. LouisLondon

STL - LHR

STLLHR

Lambert-St Louis

Mon 23/2

18:55-11:15

1 stop10h 20m

London Heathrow

Wed 4/3

06:30-13:55

1 stop13h 25m

£465

St. LouisLondon

STL - LHR

STLLHR

Lambert-St Louis

Mon 23/2

18:47-11:40

1 stop10h 53m

London Heathrow

Wed 4/3

15:50-23:36

1 stop13h 46m

£467

St. LouisInverness

STL - INV

STLINV

Lambert-St Louis

Thu 19/2

18:57-19:40

2 stops18h 43m

Inverness

Thu 26/2

11:45-08:55

2 stops27h 10m

£478

St. LouisInverness

STL - INV

STLINV

Lambert-St Louis

Thu 19/2

18:57-19:40

2 stops18h 43m

Inverness

Thu 26/2

11:45-08:55

2 stops27h 10m

£478

Flights are sorted by cheapest return flights first.

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

See travel insights to the United Kingdom from

How to get the cheapest flight ticket from St. Louis to United Kingdom

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 month to fly to United Kingdom?

The cheapest month to fly to United Kingdom from St. Louis is in October. Flight prices, which tend to average around £518, are often lower during this time because this is during the off-season. If you are unable to visit United Kingdom during the month of October, then departing from St. Louis during the month November is also very affordable. Most momondo users find prices during this month for around £518.

What is the cheapest day to depart on your flight to United Kingdom?

The cheapest day to depart from St. Louis to United Kingdom is on a Wednesday. Travellers who choose to depart for United Kingdom on a Wednesday will often find tickets for as low as £785. When flying out on a Sunday, the most expensive travel day of the week, you can expect to see flight prices from St. Louis to United Kingdom for around £847.

How far in advance should I book a flight to United Kingdom?

You are more likely to see cheaper flights to United Kingdom from St. Louis when booking weeks ahead of your departure date. In general, you can expect to find flights to United Kingdom for around £630 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to United Kingdom from St. Louis for as low as £561 on momondo.

Can stopping save me money on St. Louis to United Kingdom flights?

You could potentially save up to 13% on your flight if you consider stops on a St. Louis to United Kingdom flight.

Cheap St. Louis to United Kingdom flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from St. Louis to United Kingdom

Best price found

£572

Fastest flight time

8h 00m

Direct flights

Mon, Wed, Thu and Sat

Airports in United Kingdom

1,286 airports
The best flight deal from St. Louis to United Kingdom found on momondo in the last 72 hours is £572
The fastest flight from St. Louis to United Kingdom takes 8h 00m
Direct flights go from St. Louis to United Kingdom on Monday, Wednesday, Thursday and Saturday. There are no airlines offering direct flights..
There are 1,286 airports in United Kingdom. From St. Louis there are direct flights to London Heathrow (LHR).
Search flight deals

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

    Prices for flights from Lambert-St Louis Airport to United Kingdom are refreshed on a daily basis.

  • How many operators does momondo search for flights from Lambert-St Louis Airport to United Kingdom?

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

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Lambert-St Louis Airport to United Kingdom.

  • What documentation or ID do you need to fly to United Kingdom?

    The travel and health documents required for your trip to United Kingdom can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at United Kingdom. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

  • What is the most popular plane model from St. Louis to United Kingdom?

Best airlines flying from St. Louis to United Kingdom

Compare and see reviews for airlines that fly from St. Louis to United Kingdom with momondo
Airline
Rating
Free Cancellation
Price
Virgin AtlanticPriceFrom £401Free CancellationRating
7.5
678 reviews
Search Virgin Atlantic flights
British AirwaysPriceFrom £423Free CancellationRating
6.7
7,716 reviews
Search British Airways flights
Air CanadaPriceFrom £427Free CancellationRating
7.1
10,690 reviews
Search Air Canada flights
American AirlinesPriceFrom £572Free CancellationRating
7.2
11,232 reviews
Search American Airlines flights

Why use momondo?

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

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 United Kingdom for you.

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

All flight searches from St. Louis to United Kingdom on momondo can be filtered to show those which offer flexible booking policies.

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

Once all potential St. Louis to United Kingdom flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

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

If you are simply researching potential flights to United Kingdom, momondo offers a useful price alert feature which will track prices for flights to United Kingdom from St. Louis and alert you when they change.

An easier way to manage your United Kingdom trip

We make it super easy to schedule, organise 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
Fri 6/3
Fri 13/3
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to the United Kingdom

Popular Cities in the United Kingdom

Popular flights according to clicks in the last 7 days on momondo
Flights to Londonfrom £31
Flights to Manchesterfrom £31
Flights to Birminghamfrom £34
Flights to Edinburghfrom £30
Flights to Belfastfrom £19
Flights to Glasgowfrom £34
Flights to Bristolfrom £30
Flights to Newcastle upon Tynefrom £31
Flights to Liverpoolfrom £31
Flights to Aberdeenfrom £37
Flights to Leedsfrom £61
Flights to Invernessfrom £38