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$179+ 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 25/1. 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 — MEL
16 Dec — 23 Dec1
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 16 November 2025.

Cheapest airline

United Airlines

Good round-trip deal

$107 or less
On average, United Airlines currently has the cheapest one-way flight from Lambert-St Louis (avg. price of $2,508).
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Price to beat on a round-trip 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 16 November 2025.

Sun 1/214:45STL - BNE
2 stops26h 00mMultiple Airlines
Sun 15/210:45BNE - STL
2 stops44h 44mMultiple Airlines
Deal found 15/11$1,383
Fri 28/1116:05STL - BNE
2 stops48h 40mAir Canada
Fri 5/1210:45BNE - STL
2 stops44h 44mAir Canada
Deal found 15/11$1,406
Fri 28/1116:05STL - BNE
3 stops52h 30mMultiple Airlines
Fri 5/1210:45BNE - STL
2 stops44h 44mMultiple Airlines
Deal found 15/11$1,455
Mon 1/1207:00STL - SYD
1 stop33h 00mQantas Airways
Sat 6/1207:05SYD - STL
2 stops33h 52mQantas Airways
Deal found 15/11$1,468
Thu 29/117:04STL - SYD
2 stops34h 46mQantas Airways
Thu 5/217:45SYD - STL
1 stop23h 14mQantas Airways
Deal found 14/11$1,498
Mon 8/1217:30STL - SYD
2 stops34h 20mQantas Airways
Wed 17/1211:20SYD - STL
1 stop29h 37mQantas Airways
Deal found 14/11$1,502
Mon 2/207:04STL - MEL
1 stop33h 26mQantas Airways
Sat 14/218:30MEL - STL
2 stops39h 35mQantas Airways
Deal found 14/11$1,528
Mon 16/206:30STL - SYD
1 stop33h 30mQantas Airways
Mon 23/217:50SYD - STL
2 stops46h 58mQantas Airways
Deal found 15/11$1,557
Sun 1/215:37STL - BNE
1 stop22h 53mAmerican Airlines
Sun 15/219:40BNE - STL
1 stop20h 08mAmerican Airlines
Deal found 15/11$1,563
Mon 16/214:45STL - BNE
2 stops26h 00mAir Canada
Fri 20/210:45BNE - STL
2 stops44h 44mAir Canada
Deal found 15/11$1,568
Mon 16/217:25STL - BNE
1 stop22h 05mUnited Airlines
Fri 20/211:40BNE - STL
1 stop21h 04mUnited Airlines
Deal found 15/11$1,586
Fri 28/1113:35STL - BNE
2 stops25h 55mUnited Airlines
Fri 5/1211:40BNE - STL
1 stop20h 47mUnited Airlines
Deal found 15/11$1,594

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

Fly to

Melbourne

Route

Depart

Return

Price

St. LouisBrisbane

STL - BNE

STLBNE

Lambert-St Louis

Sun 1/2

14:45-08:45

2 stops26h 00m

Brisbane

Sun 15/2

10:45-15:29

2 stops44h 44m

$1,383

St. LouisBrisbane

STL - BNE

STLBNE

Lambert-St Louis

Fri 28/11

16:05-08:45

2 stops48h 40m

Brisbane

Fri 5/12

10:45-15:29

2 stops44h 44m

$1,406

St. LouisBrisbane

STL - BNE

STLBNE

Lambert-St Louis

Fri 28/11

16:05-12:35

3 stops52h 30m

Brisbane

Fri 5/12

10:45-15:29

2 stops44h 44m

$1,455

St. LouisSydney

STL - SYD

STLSYD

Lambert-St Louis

Mon 1/12

07:00-09:00

1 stop33h 00m

Sydney Kingsford Smith

Sat 6/12

07:05-23:57

2 stops33h 52m

$1,468

St. LouisSydney

STL - SYD

STLSYD

Lambert-St Louis

Mon 16/2

06:30-09:00

1 stop33h 30m

Sydney Kingsford Smith

Mon 23/2

17:50-23:48

2 stops46h 58m

$1,557

St. LouisBrisbane

STL - BNE

STLBNE

Lambert-St Louis

Sun 1/2

15:37-06:30

1 stop22h 53m

Brisbane

Sun 15/2

19:40-23:48

1 stop20h 08m

$1,563

St. LouisBrisbane

STL - BNE

STLBNE

Lambert-St Louis

Mon 16/2

14:45-08:45

2 stops26h 00m

Brisbane

Fri 20/2

10:45-15:29

2 stops44h 44m

$1,568

St. LouisBrisbane

STL - BNE

STLBNE

Lambert-St Louis

Mon 16/2

17:25-07:30

1 stop22h 05m

Brisbane

Fri 20/2

11:40-16:44

1 stop21h 04m

$1,586

St. LouisSydney

STL - SYD

STLSYD

Lambert-St Louis

Mon 16/2

08:41-09:35

2 stops31h 54m

Sydney Kingsford Smith

Mon 23/2

11:20-15:29

2 stops45h 09m

$1,692

St. LouisMelbourne

STL - MEL

STLMEL

Lambert-St Louis

Wed 4/3

17:25-10:00

1 stop23h 35m

Melbourne

Wed 18/3

12:00-22:25

1 stop26h 25m

$1,955

Flights are sorted by cheapest return flights first.

Deals found on 15/11

Showing 1-10 of 40 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 $1,644). Flying from St. Louis in July will prove the most costly (average of $2,376). 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 $2,008

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

St. Louis offers frequent flights to Chicago (762 flights per day), Atlanta (211 flights per day) and Dallas (209 flights per day).

Denver Intl
Denver Intl
From $106

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

The cheapest city to fly to from St. Louis is Denver Intl, with prices starting at $106. Explore other affordable destinations below.

Denver Intl
Denver Intl
From $106

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
9,017 reviews
Check prices

Overall

7.4

Comfort

7.3

Entertainment

7.1

Crew

8.1

Food

6.6

Boarding

7.7

Reviews

1 / 20
2.0
Mediocre

Sebrena,Oct 2025

IAH - RSW

The worst that I have ever experienced in my life so bad if it was free I'm not ever going to use your Airline again I dont believe ..... very disappointed 😞 😔0000000000000
United Airlines
7.4
Good
9,017 reviews
United Airlines
7.4
Good
9,017 reviews
Check prices

Overall

7.4

Comfort

7.3

Entertainment

7.1

Crew

8.1

Food

6.6

Boarding

7.7

Reviews

1 / 20
2.0
Mediocre

Sebrena,Oct 2025

IAH - RSW

The worst that I have ever experienced in my life so bad if it was free I'm not ever going to use your Airline again I dont believe ..... very disappointed 😞 😔0000000000000

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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 16 November 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 Denver, Cancún, 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 $106 to Denver (prices may vary depending on the airline and departure time). On average, users have booked flights for $107 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 $5,663

  • 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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