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$207+ 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 20/2. 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 — MEL
20 Jan — 27 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 21 December 2025.

Good round-trip deal

$269 or less

Good one-way deal

$165 or less
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 21 December 2025.

Wed 4/207:04STL - SYD
2 stops44h 46mQantas Airways
Wed 11/211:20SYD - STL
1 stop29h 39mQantas Airways
Deal found 21/12$1,420
Mon 13/414:40STL - BNE
2 stops25h 25mMultiple Airlines
Tue 21/410:00BNE - STL
2 stops44h 24mMultiple Airlines
Deal found 20/12$1,462
Mon 13/416:05STL - BNE
3 stops52h 25mAir Canada
Tue 21/410:00BNE - STL
2 stops44h 24mAir Canada
Deal found 20/12$1,500
Sat 31/107:04STL - BNE
1 stop29h 56mQantas Airways
Wed 4/218:30BNE - STL
2 stops37h 44mQantas Airways
Deal found 20/12$1,512
Sat 7/317:55STL - SYD
2 stops44h 40mQantas Airways
Sat 14/311:20SYD - STL
1 stop28h 39mQantas Airways
Deal found 19/12$1,518
Sun 15/306:38STL - SYD
1 stop34h 22mQantas Airways
Tue 24/317:50SYD - STL
2 stops39h 23mQantas Airways
Deal found 19/12$1,519
Mon 2/211:55STL - BNE
1 stop26h 35mAmerican Airlines
Mon 9/219:40BNE - STL
1 stop20h 19mAmerican Airlines
Deal found 19/12$1,531
Mon 2/216:05STL - BNE
2 stops24h 40mAir Canada
Mon 9/214:05BNE - STL
3 stops65h 24mAir Canada
Deal found 19/12$1,553
Sat 31/117:00STL - BNE
1 stop22h 30mUnited Airlines
Wed 4/211:40BNE - STL
1 stop19h 57mUnited Airlines
Deal found 20/12$1,569
Sat 31/116:05STL - BNE
2 stops48h 40mAir Canada
Wed 4/210:45BNE - STL
2 stops44h 44mAir Canada
Deal found 18/12$1,572
Sun 1/207:04STL - MEL
2 stops39h 31mQantas Airways
Thu 12/212:00MEL - STL
1 stop28h 48mQantas Airways
Deal found 19/12$1,595
Mon 2/217:04STL - SYD
2 stops26h 11mQantas Airways
Mon 9/214:05SYD - STL
1 stop22h 24mQantas Airways
Deal found 19/12$1,595

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 21 December 2025. In the last 7 days, Cheapflights users made a total of 647,157 searches

Fly to

Melbourne

Route

Depart

Return

Price

St. LouisSydney

STL - SYD

STLSYD

Lambert-St Louis

Wed 4/2

07:04-20:50

2 stops44h 46m

Sydney Kingsford Smith

Wed 11/2

11:20-23:59

1 stop29h 39m

$1,420

St. LouisSydney

STL - SYD

STLSYD

Lambert-St Louis

Sat 14/2

06:30-09:00

1 stop33h 30m

Sydney Kingsford Smith

Wed 18/2

17:50-15:01

2 stops38h 11m

$1,420

St. LouisBrisbane

STL - BNE

STLBNE

Lambert-St Louis

Mon 13/4

14:40-07:05

2 stops25h 25m

Brisbane

Tue 21/4

10:00-15:24

2 stops44h 24m

$1,462

St. LouisBrisbane

STL - BNE

STLBNE

Lambert-St Louis

Mon 13/4

16:05-11:30

3 stops52h 25m

Brisbane

Tue 21/4

10:00-15:24

2 stops44h 24m

$1,500

St. LouisBrisbane

STL - BNE

STLBNE

Lambert-St Louis

Sat 31/1

07:04-05:00

1 stop29h 56m

Brisbane

Wed 4/2

18:30-14:47

2 stops36h 17m

$1,512

St. LouisSydney

STL - SYD

STLSYD

Lambert-St Louis

Sun 15/3

06:38-09:00

1 stop34h 22m

Sydney Kingsford Smith

Tue 24/3

17:50-17:13

2 stops39h 23m

$1,519

St. LouisBrisbane

STL - BNE

STLBNE

Lambert-St Louis

Mon 2/2

11:55-06:30

1 stop26h 35m

Brisbane

Mon 9/2

19:40-23:59

1 stop20h 19m

$1,531

St. LouisBrisbane

STL - BNE

STLBNE

Lambert-St Louis

Mon 2/2

16:05-08:45

2 stops24h 40m

Brisbane

Mon 9/2

14:05-15:29

3 stops65h 24m

$1,542

St. LouisBrisbane

STL - BNE

STLBNE

Lambert-St Louis

Sat 31/1

17:00-07:30

1 stop22h 30m

Brisbane

Wed 4/2

11:40-15:37

1 stop19h 57m

$1,569

St. LouisMelbourne

STL - MEL

STLMEL

Lambert-St Louis

Sun 22/3

15:54-15:35

2 stops31h 41m

Melbourne

Tue 31/3

09:45-23:59

1 stop30h 14m

$1,645

Flights are sorted by cheapest return flights first.

Deals found on 19/12

Showing 1-10 of 41 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.

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 $1,625). Flying from St. Louis in July will prove the most costly (average of $2,348). 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?

When flying from St. Louis check dates and pricing for the following: United Airlines. As it departs for the following popular destinations: Melbourne.

United Airlines
United Airlines
From $2,139

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

St. Louis offers frequent flights to Chicago (657 flights per day), Dallas (173 flights per day) and Atlanta (102 flights per day).

Atlanta Hartsfield-Jackson
Atlanta Hartsfield-Jackson
From $163

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

The cheapest city to fly to from St. Louis is Atlanta Hartsfield-Jackson, with prices starting at $163. Explore other affordable destinations below.

Atlanta Hartsfield-Jackson
Atlanta Hartsfield-Jackson
From $163

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 647,157 searches.
Get a feel of what it's like to fly with United Airlines from St. Louis by reading reviews from past customers. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
9,099 reviews
Check prices

Boarding

7.7

Entertainment

7.1

Comfort

7.3

Crew

8.1

Food

6.6

Overall

7.4

Reviews

1 / 20
10.0
Excellent

Michelle,Dec 2025

DEN - MKE

I liked that the plane waited 5 minutes for a family whose incoming plane was late. This was the last flight of the day to MKE. Flight attendants actually checked in throughout the flight. Although, not really friendly. Happy to see screens on seat backs again. This is my first time not flying first class in over 10 years. It was economy plus.
United Airlines
7.4
Good
9,099 reviews
United Airlines
7.4
Good
9,099 reviews
Check prices

Boarding

7.7

Entertainment

7.1

Comfort

7.3

Crew

8.1

Food

6.6

Overall

7.4

Reviews

1 / 20
10.0
Excellent

Michelle,Dec 2025

DEN - MKE

I liked that the plane waited 5 minutes for a family whose incoming plane was late. This was the last flight of the day to MKE. Flight attendants actually checked in throughout the flight. Although, not really friendly. Happy to see screens on seat backs again. This is my first time not flying first class in over 10 years. It was economy plus.

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Direct flights from Missouri

Book a direct flight from one of these other cities located in Missouri.
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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 21 December 2025.

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

    For the current month, the most popular flights from St. Louis are Cancún, Denver, Atlanta. Denver, Cancún, Atlanta are the most popular locations from St. Louis year round.

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

    Users have flown out of St. Louis for as low as $163 to Atlanta (prices may vary depending on the airline and departure time). On average, users have booked flights for $221 to fly from St. Louis.

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

    Options for some of the cheapest premium economy flights from St. Louis we have found on Cheapflights are as follows:
    Fly from Lambert-St Louis to Houston George Bush Intcntl Airport starting at $5,597

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

    Currently, the cheapest month for flights from St. Louis is August. The most expensive month for flights is July. The cheapest prices are shown above but prices will vary according to departure times, airlines, class and how early you book.

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

    When you search for this flight from St. Louis, Cheapflights searches on 900+ travel sites to save you time finding great flight deals online. Additionally, we offer filter features so you can choose a preferred cabin class or airline, see different price ranges, and much more so you can book the best flight for you.

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

    Cheapflights helps you find that perfect flight from St. Louis by searching from hundreds of airlines and agencies you know and love. We are also free to use, in case you were wondering!

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

    Yes, we can. To see specific flights from St. Louis with no change fees, users can toggle flexible booking options after using the search form above to find flights.

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

    Yes, Cheapflights offers price alerts on flights from St. Louis so you can book your travels when it’s right. The Price Alerts feature is available by clicking the bell icon next to the flight deals above and providing your email address.

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

When you search for this flight from St. Louis, Cheapflights searches on 900+ travel sites to save you time finding great flight deals online. Additionally, we offer filter features so you can choose a preferred cabin class or airline, see different price ranges, and much more so you can book the best flight for you.

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

Cheapflights helps you find that perfect flight from St. Louis by searching from hundreds of airlines and agencies you know and love. We are also free to use, in case you were wondering!

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

Yes, we can. To see specific flights from St. Louis with no change fees, users can toggle flexible booking options after using the search form above to find flights.

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

Yes, Cheapflights offers price alerts on flights from St. Louis so you can book your travels when it’s right. The Price Alerts feature is available by clicking the bell icon next to the flight deals above and providing your email address.

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