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£109+ Cheap flights from St. Louis

This is the cheapest return flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 24/1. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
STL — LHR
4 Jan — 11 Jan1
1 adult
1 adult, Economy, 0 bags

What to know about flights from St. Louis

Discover essential information about flights departing from St. Louis, including flight schedules, destinations, airlines operating at the St. Louis airport, and any specific guidelines or requirements for travellers. Please note that the information is based on the most recent updates available. Data last updated 5 December 2025.

Cheapest airline

British Airways

Good round-trip deal

£129 or less

Good one-way deal

£226 or less
On average, British Airways currently has the cheapest one-way flight from Lambert-St Louis (avg. price of £625).
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Price to beat on a round-trip flight from Lambert-St Louis.
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Price to beat on a one-way flight from Lambert-St Louis.
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Find flights from St. Louis

Enter your travel dates to find the best prices.

Cheapest flights from St. Louis
Explore the most affordable flight options available from St. Louis. Find the lowest fares based on data from user searches, with prices last updated on 5 December 2025.

Mon 2/218:57STL - LIN
2 stops17h 38mDelta
Mon 23/206:30LIN - STL
2 stops23h 53mDelta
Deal found 4/12£369
Sat 7/206:35STL - LIN
2 stops21h 40mDelta
Wed 18/210:55LIN - STL
2 stops16h 48mDelta
Deal found 4/12£370
Sat 7/216:49STL - LIN
2 stops36h 06mUnited Airlines
Mon 16/206:15LIN - STL
2 stops21h 45mUnited Airlines
Deal found 4/12£371
Fri 6/208:30STL - LIN
2 stops20h 25mUnited Airlines
Tue 10/206:15LIN - STL
2 stops40h 14mUnited Airlines
Deal found 2/12£374
Sat 17/110:19STL - LIN
2 stops16h 41mKLM
Sat 24/106:30LIN - STL
2 stops17h 07mKLM
Deal found 3/12£375
Fri 6/209:45STL - LIN
2 stops16h 00mDelta
Sun 15/206:30LIN - STL
2 stops20h 39mDelta
Deal found 4/12£377
Fri 6/218:40STL - LIN
2 stops36h 25mUnited Airlines
Mon 16/206:15LIN - STL
2 stops21h 45mUnited Airlines
Deal found 4/12£378
Wed 21/118:44STL - GLA
2 stops15h 06mBritish Airways
Tue 27/107:25GLA - STL
2 stops16h 51mBritish Airways
Deal found 3/12£415
Wed 1/411:59STL - EDI
2 stops19h 56mBritish Airways
Thu 9/408:35EDI - STL
2 stops30h 07mBritish Airways
Deal found 3/12£429
Mon 12/118:44STL - BHD
2 stops15h 21mBritish Airways
Tue 20/106:35BHD - STL
2 stops17h 41mBritish Airways
Deal found 3/12£431
Fri 6/214:54STL - EDI
2 stops15h 16mBritish Airways
Fri 13/210:55EDI - STL
2 stops17h 59mBritish Airways
Deal found 4/12£436
Fri 30/106:00STL - EDI
2 stops19h 55mUnited Airlines
Tue 3/209:25EDI - STL
1 stop13h 53mUnited Airlines
Deal found 3/12£444

Find flights from St. Louis within your budget

 
Find flights departing from St. Louis that match your specified budget. Filter results by price range, allowing you to narrow down options and find flights that fit within your financial constraints. Please note that the search results are based on data from user searches, with fares last updated on 5 December 2025. In the last 7 days, Cheapflights users made a total of 858,174 searches

Fly to

Heathrow

Route

Depart

Return

Price

St. LouisMilan

STL - LIN

STLLIN

Lambert-St Louis

Mon 2/2

18:57-19:35

2 stops17h 38m

Milan Linate

Mon 23/2

06:30-23:23

2 stops23h 53m

£369

St. LouisMilan

STL - LIN

STLLIN

Lambert-St Louis

Wed 11/2

06:30-11:55

2 stops22h 25m

Milan Linate

Fri 20/2

06:10-21:00

2 stops21h 50m

£370

St. LouisMilan

STL - LIN

STLLIN

Lambert-St Louis

Fri 6/2

09:45-08:45

2 stops16h 00m

Milan Linate

Wed 18/2

06:30-20:43

2 stops21h 13m

£370

St. LouisMilan

STL - LIN

STLLIN

Lambert-St Louis

Wed 11/2

08:05-11:55

2 stops20h 50m

Milan Linate

Sun 15/2

06:15-22:59

2 stops23h 44m

£370

St. LouisMilan

STL - LIN

STLLIN

Lambert-St Louis

Fri 6/2

09:45-13:55

2 stops21h 10m

Milan Linate

Tue 17/2

10:55-20:43

2 stops16h 48m

£370

St. LouisMilan

STL - LIN

STLLIN

Lambert-St Louis

Wed 11/2

06:30-11:55

2 stops22h 25m

Milan Linate

Thu 19/2

14:50-10:13

2 stops26h 23m

£370

St. LouisMilan

STL - LIN

STLLIN

Lambert-St Louis

Fri 6/2

06:25-08:45

2 stops19h 20m

Milan Linate

Sat 14/2

06:30-09:32

2 stops34h 02m

£370

St. LouisMilan

STL - LIN

STLLIN

Lambert-St Louis

Tue 10/2

17:56-13:55

2 stops12h 59m

Milan Linate

Wed 18/2

10:55-09:32

2 stops29h 37m

£370

St. LouisMilan

STL - LIN

STLLIN

Lambert-St Louis

Sat 7/2

10:19-11:15

2 stops17h 56m

Milan Linate

Tue 17/2

10:55-20:43

2 stops16h 48m

£370

St. LouisMilan

STL - LIN

STLLIN

Lambert-St Louis

Sun 8/2

17:04-19:35

2 stops19h 31m

Milan Linate

Thu 19/2

06:30-20:43

2 stops21h 13m

£370

Flights are sorted by cheapest return flights first.

Deals found on 4/12

Showing 1-10 of 60 results
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Best time to book a flight from St. Louis

Have a flexible travel schedule? Discover the best time to fly from St. Louis with our price prediction graph.
Estimated return price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Travel insights for flights from St. Louis

Get recent, data-driven insights about flights from St. Louis including ideal travel times, pricing trends, and more.

When is the best time to book a flight from St. Louis?

Use this chart to determine the optimal time to book a return flight from St. Louis to Heathrow. Price data was last updated on 28 November 2025.

Booking 27 days in advance of your planned departure date is, on average, the best time to get cheap flights from St. Louis. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

What is the cheapest month to book a flight from St. Louis?

Currently, September is the cheapest month in which you can book a flight from St. Louis (average of £397). Flying from St. Louis in June will prove the most costly (average of £750). There are multiple factors that influence the price of a flight so comparing airlines, departure airports and times can help keep costs down.

Which airlines fly from St. Louis?

Many airlines operate round-trip flights from St. Louis: Virgin Atlantic, British Airways, KLM, Air Canada. These airlines fly to the following popular destinations: London.

Virgin Atlantic
Virgin Atlantic
From £412
British Airways
British Airways
From £434
KLM
KLM
From £369
Air Canada
Air Canada
From £438

What are popular destinations to fly to from St. Louis?

If you’re flying from St. Louis, these routes are more frequently taken by airlines Chicago (756 flights per day), Dallas (221 flights per day) and Atlanta (169 flights per day).

Chicago
Chicago
From £36
Dallas/Fort Worth
Dallas/Fort Worth
From £398
Tampa
Tampa
From £292
Miami
Miami
From £347

What is the cheapest place to fly to from St. Louis?

The cheapest city to fly to from St. Louis is Chicago, with prices starting at £36. Explore other affordable destinations below.

Chicago
Chicago
From £36
Detroit
Detroit
From £71
Los Angeles
Los Angeles
From £129
Montreal
Montreal
From £281

Airline reviews for flights from St. Louis

Get insights into the airlines that provide service from St. Louis. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing airline for your flight from St. Louis. In the last 7 days, Cheapflights users made a total of 858,174 searches.
Read through reviews of airlines serving St. Louis, such as KLM, Virgin Atlantic, andAir Canada. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
KLM
7.7
Good
1,430 reviews
Check prices

Food

7.2

Crew

8.4

Boarding

7.8

Overall

7.7

Entertainment

7.1

Comfort

7.6

Reviews

1 / 20
8.0
Excellent

Anonymous,Dec 2025

YYC - AMS

Not literally sitting in the very last row in the middle
KLM
7.7
Good
1,430 reviews
KLM
7.7
Good
1,430 reviews
Check prices

Food

7.2

Crew

8.4

Boarding

7.8

Overall

7.7

Entertainment

7.1

Comfort

7.6

Reviews

1 / 20
8.0
Excellent

Anonymous,Dec 2025

YYC - AMS

Not literally sitting in the very last row in the middle
Virgin Atlantic
7.5
Good
675 reviews
KLM
7.7
Good
1,430 reviews
Check prices

Food

7.2

Crew

8.4

Boarding

7.8

Overall

7.7

Entertainment

7.1

Comfort

7.6

Reviews

1 / 20
8.0
Excellent

Anonymous,Dec 2025

YYC - AMS

Not literally sitting in the very last row in the middle
Air Canada
7.1
Good
10,500 reviews
KLM
7.7
Good
1,430 reviews
Check prices

Food

7.2

Crew

8.4

Boarding

7.8

Overall

7.7

Entertainment

7.1

Comfort

7.6

Reviews

1 / 20
8.0
Excellent

Anonymous,Dec 2025

YYC - AMS

Not literally sitting in the very last row in the middle
British Airways
6.7
Okay
7,562 reviews
KLM
7.7
Good
1,430 reviews
Check prices

Food

7.2

Crew

8.4

Boarding

7.8

Overall

7.7

Entertainment

7.1

Comfort

7.6

Reviews

1 / 20
8.0
Excellent

Anonymous,Dec 2025

YYC - AMS

Not literally sitting in the very last row in the middle

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Related info for your journey

Access useful and relevant information related to your journey from St. Louis. This can include details such as airport transportation, visa requirements, travel insurance, luggage regulations, and any other information that can ensure a smooth and hassle-free travel experience. Please note that the information is based on general guidance and may need to be verified with official sources. Data last updated 5 December 2025.

  • What are the most popular destinations to fly to from St. Louis?

    This month, the top selected destinations from St. Louis are Denver, Cancún, Atlanta. Throughout the year, Denver, Cancún, Atlanta are some of the top choices made by users flying from St. Louis.

  • What is the cheapest flight from St. Louis to anywhere?

    Users have flown out of St. Louis for as low as £36 to Chicago O'Hare Intl Airport (prices may vary depending on the airline and departure time). On average, users have booked flights for £703 to fly from St. Louis.

  • What are the cheapest airlines flying from St. Louis to anywhere?

    Over the past few days, we've found that KLM, Virgin Atlantic, and British Airways have the cheapest prices from St. Louis. KLM flights from St. Louis to London Heathrow (£369), Virgin Atlantic flights from St. Louis to London Heathrow (£412), and British Airways flights from St. Louis to London Heathrow (£434).

  • What is the cheapest premium economy flight from St. Louis?

    Here are some of the cheapest offers we have found for the cheapest premium economy flights from St. Louis.
    Lambert-St Louis to Washington, D.C. Dulles Intl Airport from £1,280
    Lambert-St Louis to Frankfurt am Main Airport from £1,769
    Lambert-St Louis to Newark Airport from £2,181
    Lambert-St Louis to Dallas/Fort Worth Airport from £2,744

  • What is the cheapest first class flight from St. Louis?

    If you’re looking for a cheap first-class flight from St. Louis, consider Chicago. Prices start at £364 so you can fly first-class even on a budget.

  • What is the cheapest month to fly from St. Louis?

    At the present moment the cheapest month to fly from St. Louis is currently September; with June being the most expensive. Prices will vary depending on multiple factors such as booking in advance, airline and departure airports and times.

  • Where are the cheapest places to fly to from St. Louis?

    Check out the cheapest flights from St. Louis to embark to:
    Travel from St. Louis to London from £434 round trip

  • How does Cheapflights help users find flights from St. Louis?

    Deals for flights from St. Louis are sourced from 900+ travel sites when you use Cheapflights. When all flight results come back, Cheapflights lets you sort and filter flights using different criteria to choose to your preference, such as price, airport, cabin class, and plenty of other options.

  • Why should you use Cheapflights to find cheap flight tickets from St. Louis?

    Cheapflights simply makes it quick and affordable to book flights from St. Louis by bringing together all flight options from hundreds of airlines and agencies online — and we put them in one place for you to choose from. Plus, Cheapflights is 100% free to use for all.

  • Can Cheapflights find flights from St. Louis with no change fees?

    Users can book flights with no change fees policies with our dedicated filters. Book flights from St. Louis flexibly with Cheapflights today.

  • Can Cheapflights notify me if prices for flights from St. Louis become cheaper?

    Not ready to book yet? You can track prices for flights from St. Louis on Cheapflights with our Price Alerts feature and get notified when better prices are available.

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How does Cheapflights help users find flights from St. Louis?

Deals for flights from St. Louis are sourced from 900+ travel sites when you use Cheapflights. When all flight results come back, Cheapflights lets you sort and filter flights using different criteria to choose to your preference, such as price, airport, cabin class, and plenty of other options.

Why should you use Cheapflights to find cheap flight tickets from St. Louis?

Cheapflights simply makes it quick and affordable to book flights from St. Louis by bringing together all flight options from hundreds of airlines and agencies online — and we put them in one place for you to choose from. Plus, Cheapflights is 100% free to use for all.

Can Cheapflights find flights from St. Louis with no change fees?

Users can book flights with no change fees policies with our dedicated filters. Book flights from St. Louis flexibly with Cheapflights today.

Can Cheapflights notify me if prices for flights from St. Louis become cheaper?

Not ready to book yet? You can track prices for flights from St. Louis on Cheapflights with our Price Alerts feature and get notified when better prices are available.

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