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£79+ Cheap flights from St. Louis

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 13/12. 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
1 Sep — 8 Sep1
1 adult

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 27 August 2025.

Cheapest airline

British Airways

Good round-trip deal

£468 or less

Good one-way deal

£73 or less
On average, British Airways currently has the cheapest one-way flight from Lambert-St Louis (avg. price of £756).
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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

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 27 August 2025.

Fri 24/1019:52STL - LAS
1 stop15h 10mFrontier
Mon 27/1006:20LAS - STL
Nonstop3h 23mFrontier
Deal found 26/8£123
Thu 18/919:55STL - LAS
1 stop5h 38mFrontier
Sat 20/900:59LAS - STL
1 stop6h 07mFrontier
Deal found 26/8£200
Fri 24/1013:00STL - LAS
2 stops31h 46mMultiple Airlines
Mon 27/1022:07LAS - STL
1 stop9h 55mMultiple Airlines
Deal found 26/8£235
Tue 23/915:35STL - LAS
1 stop7h 53mAlaska Airlines
Tue 30/907:45LAS - STL
1 stop7h 49mAlaska Airlines
Deal found 25/8£236
Tue 11/1106:00STL - LAS
1 stop8h 47mDelta
Wed 19/1111:02LAS - STL
2 stops11h 44mDelta
Deal found 24/8£245
Tue 23/906:45STL - LAS
Nonstop3h 25mSouthwest
Tue 30/906:45LAS - STL
Nonstop3h 10mSouthwest
Deal found 25/8£250
Sat 15/1106:00STL - LAS
2 stops12h 55mDelta
Wed 19/1111:02LAS - STL
2 stops11h 44mDelta
Deal found 24/8£253
Wed 3/1210:25STL - LAS
1 stop4h 55mSouthwest
Tue 9/1212:10LAS - STL
Nonstop3h 10mSouthwest
Deal found 25/8£255
Tue 9/913:26STL - LHR
2 stops13h 29mDelta
Wed 1/1006:15LHR - STL
2 stops16h 33mDelta
Deal found 25/8£391
Mon 29/910:40STL - LHR
2 stops16h 10mDelta
Tue 14/1009:55LHR - STL
2 stops18h 09mDelta
Deal found 25/8£392
Tue 14/1014:15STL - LHR
1 stop10h 35mBritish Airways
Wed 22/1014:25LHR - STL
1 stop12h 01mBritish Airways
Deal found 24/8£393
Sun 7/912:00STL - LHR
1 stop15h 15mDelta
Thu 2/1015:15LHR - STL
1 stop14h 09mDelta
Deal found 25/8£393

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 27 August 2025. In the last 7 days, Cheapflights users made a total of 858,174 searches

Fly to

Heathrow

Route

Depart

Return

Price

St. LouisLas Vegas

STL - LAS

STLLAS

Lambert-St Louis

Fri 24/10

19:52-13:13

1 stop19h 21m

Las Vegas Harry Reid Intl

Sun 26/10

00:55-09:32

1 stop6h 37m

£164

St. LouisLas Vegas

STL - LAS

STLLAS

Lambert-St Louis

Thu 18/9

19:55-23:33

1 stop5h 38m

Las Vegas Harry Reid Intl

Sat 20/9

00:59-09:06

1 stop6h 07m

£200

St. LouisLas Vegas

STL - LAS

STLLAS

Lambert-St Louis

Fri 24/10

13:00-18:46

2 stops31h 46m

Las Vegas Harry Reid Intl

Mon 27/10

22:07-10:02

1 stop9h 55m

£235

St. LouisLas Vegas

STL - LAS

STLLAS

Lambert-St Louis

Tue 23/9

15:35-21:28

1 stop7h 53m

Las Vegas Harry Reid Intl

Tue 30/9

07:45-17:34

1 stop7h 49m

£236

St. LouisLas Vegas

STL - LAS

STLLAS

Lambert-St Louis

Fri 14/11

14:21-22:37

2 stops10h 16m

Las Vegas Harry Reid Intl

Wed 19/11

11:02-00:46

2 stops11h 44m

£245

St. LouisLas Vegas

STL - LAS

STLLAS

Lambert-St Louis

Tue 11/11

06:00-12:47

1 stop8h 47m

Las Vegas Harry Reid Intl

Wed 19/11

11:02-00:46

2 stops11h 44m

£245

St. LouisLas Vegas

STL - LAS

STLLAS

Lambert-St Louis

Wed 12/11

14:21-18:32

1 stop6h 11m

Las Vegas Harry Reid Intl

Wed 19/11

11:02-00:46

2 stops11h 44m

£245

St. LouisLas Vegas

STL - LAS

STLLAS

Lambert-St Louis

Wed 12/11

05:00-06:45

Nonstop3h 45m

Las Vegas Harry Reid Intl

Wed 19/11

06:55-12:00

Nonstop3h 05m

£250

St. LouisLas Vegas

STL - LAS

STLLAS

Lambert-St Louis

Wed 3/12

17:00-18:35

Nonstop3h 35m

Las Vegas Harry Reid Intl

Tue 9/12

09:10-14:15

Nonstop3h 05m

£250

St. LouisLas Vegas

STL - LAS

STLLAS

Lambert-St Louis

Wed 3/12

17:00-18:35

Nonstop3h 35m

Las Vegas Harry Reid Intl

Wed 10/12

09:10-14:15

Nonstop3h 05m

£250

Flights are sorted by cheapest return flights first.

Deals found on 25/8

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 22 August 2025.

Booking 34 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, August is the cheapest month in which you can book a flight from St. Louis (average of £394). Flying from St. Louis in June will prove the most costly (average of £780). 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 £631
British Airways
British Airways
From £659
KLM
KLM
From £712
Air Canada
Air Canada
From £585

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 (727 flights per day), Atlanta (210 flights per day) and New York (189 flights per day).

Chicago
Chicago
From £74
Atlanta Hartsfield-Jackson
Atlanta Hartsfield-Jackson
From £209
Orlando
Orlando
From £183
San Francisco
San Francisco
From £203

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 £55. Explore other affordable destinations below.

Chicago
Chicago
From £74
Detroit
Detroit
From £95
Las Vegas Harry Reid Intl
Las Vegas Harry Reid Intl
From £98
Orlando
Orlando
From £183

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
7.8
Good
1,384 reviews
Check prices

Comfort

7.7

Crew

8.4

Overall

7.8

Entertainment

7.1

Boarding

7.8

Food

7.3

Reviews

1 / 20
4.0
Okay

Anonymous,Jun 2025

AMS - BOS

A two and half hour delay caused havoc with all connections. Otherwise on board service was great.
KLM
7.8
Good
1,384 reviews
KLM
7.8
Good
1,384 reviews
Check prices

Comfort

7.7

Crew

8.4

Overall

7.8

Entertainment

7.1

Boarding

7.8

Food

7.3

Reviews

1 / 20
4.0
Okay

Anonymous,Jun 2025

AMS - BOS

A two and half hour delay caused havoc with all connections. Otherwise on board service was great.
Virgin Atlantic
7.4
Good
661 reviews
KLM
7.8
Good
1,384 reviews
Check prices

Comfort

7.7

Crew

8.4

Overall

7.8

Entertainment

7.1

Boarding

7.8

Food

7.3

Reviews

1 / 20
4.0
Okay

Anonymous,Jun 2025

AMS - BOS

A two and half hour delay caused havoc with all connections. Otherwise on board service was great.
Air Canada
7.1
Good
10,000 reviews
KLM
7.8
Good
1,384 reviews
Check prices

Comfort

7.7

Crew

8.4

Overall

7.8

Entertainment

7.1

Boarding

7.8

Food

7.3

Reviews

1 / 20
4.0
Okay

Anonymous,Jun 2025

AMS - BOS

A two and half hour delay caused havoc with all connections. Otherwise on board service was great.
British Airways
6.7
Okay
7,310 reviews
KLM
7.8
Good
1,384 reviews
Check prices

Comfort

7.7

Crew

8.4

Overall

7.8

Entertainment

7.1

Boarding

7.8

Food

7.3

Reviews

1 / 20
4.0
Okay

Anonymous,Jun 2025

AMS - BOS

A two and half hour delay caused havoc with all connections. Otherwise on board service was great.

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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 27 August 2025.

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

    This month, the top selected destinations from St. Louis are Boston, Cancún, Atlanta. Throughout the year, Cancún, Boston, 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 £55 to Chicago O'Hare Intl Airport (prices may vary depending on the airline and departure time). On average, users have booked flights for £284 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 Air Canada, Virgin Atlantic, and British Airways have the cheapest prices from St. Louis. Air Canada flights from St. Louis to London Heathrow (£434), Virgin Atlantic flights from St. Louis to London Heathrow (£468), and British Airways flights from St. Louis to Edinburgh Turnhouse (£489).

  • 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 £1,267
    Lambert-St Louis to Frankfurt am Main Airport from £1,752
    Lambert-St Louis to Montreal Pierre Elliott Trudeau Intl Airport from £2,001
    Lambert-St Louis to Newark Airport from £2,160

  • 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 £4,847 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 August; 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 £388 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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