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$983+ Cheap flights to 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 31/8. Fares are subject to change and may not be available on all flights or dates of travel.
— STL
14 Sep — 21 Sep1
1 adult
1 adult, Economy, 0 bags

Flights to St. Louis in 2026

Enter your travel dates to find the best prices.

Cheapest flights to St. Louis
Explore the most affordable flight options available to St. Louis. Find the lowest fares based on data from user searches, with prices last updated on 15 August 2026.

Wed 2/906:05 -
3 stops49h 06m
Wed 23/912:17 -
3 stops32h 33m
Deal found 11/8$1,378
Mon 2/1111:20 -
2 stops23h 55m
Tue 17/1106:02 -
1 stop33h 58m
Deal found 14/8$1,665
Mon 2/1114:05 -
1 stop23h 14m
Mon 16/1106:02 -
1 stop33h 58m
Deal found 14/8$1,676
Tue 17/1114:05 -
1 stop20h 49m
Tue 1/1214:54 -
1 stop23h 01m
Deal found 12/8$1,689
Thu 19/1111:20 -
2 stops23h 55m
Tue 1/1211:32 -
2 stops28h 28m
Deal found 12/8$1,715
Mon 16/1111:20 -
2 stops25h 59m
Sun 29/1112:58 -
1 stop24h 57m
Deal found 12/8$1,727
Tue 17/1111:20 -
2 stops23h 34m
Tue 1/1214:54 -
2 stops25h 06m
Deal found 12/8$1,734
Mon 12/1010:10 -
2 stops24h 10m
Thu 5/1114:54 -
2 stops25h 06m
Deal found 11/8$1,737
Wed 21/1010:10 -
2 stops24h 10m
Sat 14/1114:54 -
2 stops25h 06m
Deal found 10/8$1,738
Mon 16/1109:20 -
1 stop24h 30m
Wed 2/1219:06 -
1 stop21h 14m
Deal found 12/8$1,741
Tue 1/1211:20 -
2 stops22h 06m
Sat 6/216:30 -
2 stops45h 30m
Deal found 13/8$1,742

Find flight deals to St. Louis

Find the latest flights to St. Louis in 2026, with up-to-date prices and availability. In the last 7 days, Cheapflights users made a total of 647,157 searches and data was last updated on 15 August 2026.

Return from

$1,378

One-way from

$983

Popular in

April

Cheapest in

September

Average price

$1,504
2/9-23/9
  • 2/9-23/9
  • 6 total stops
  • 81h 39m total
  • Sydney to St. Louis
Search Deals
Qantas Airways
  • Qantas Airways
  • 31/8
  • 1 total stop
  • 20h 09m total
  • Sydney to St. Louis
Search Deals
Highest demand for flights based on searches. 11% potential increase in price ($225 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($49 potential savings vs. average return price).
Search Deals
Average for return flights in August 2026
Search Deals

Cheapflights Fare Finder

 
Locate flights to St. Louis that fit your budget, with regularly updated fares and availability. In the last 7 days, Cheapflights users made a total of 647,157 searches and data was last updated on 15 August 2026.
Use the filters below to find and compare flights to St. Louis that are best for you.

Fly from

Route

Depart

Return

Price

Cheapest return flight

SydneySt. Louis

SYD Sydney Kingsford Smith - STL Lambert-St Louis

SYDSTL

Sydney Kingsford Smith

Tue 26/1

11:20-23:59

1 stop29h 39m

Lambert-St Louis

Sat 30/1

14:54-18:00

2 stops34h 06m

$1,612

SydneySt. Louis

SYD Sydney Kingsford Smith - STL Lambert-St Louis

SYDSTL

Sydney Kingsford Smith

Wed 21/10

18:50-23:46

1 stop20h 56m

Lambert-St Louis

Sat 14/11

18:44-06:55

1 stop43h 11m

$1,734

SydneySt. Louis

SYD Sydney Kingsford Smith - STL Lambert-St Louis

SYDSTL

Sydney Kingsford Smith

Wed 18/11

11:50-18:05

1 stop23h 15m

Lambert-St Louis

Wed 2/12

16:17-07:00

1 stop21h 43m

$1,741

SydneySt. Louis

SYD Sydney Kingsford Smith - STL Lambert-St Louis

SYDSTL

Sydney Kingsford Smith

Tue 1/12

11:50-17:53

1 stop23h 03m

Lambert-St Louis

Sat 6/2

19:06-06:20

1 stop42h 14m

$1,742

SydneySt. Louis

SYD Sydney Kingsford Smith - STL Lambert-St Louis

SYDSTL

Sydney Kingsford Smith

Mon 12/10

13:00-18:20

1 stop21h 20m

Lambert-St Louis

Thu 5/11

14:54-06:55

1 stop23h 01m

$1,758
Fastest return journey

SydneySt. Louis

SYD Sydney Kingsford Smith - STL Lambert-St Louis

SYDSTL

Sydney Kingsford Smith

Wed 18/11

11:20-16:50

2 stops22h 30m

Lambert-St Louis

Thu 3/12

19:06-09:20

1 stop21h 14m

$1,812

SydneySt. Louis

SYD Sydney Kingsford Smith - STL Lambert-St Louis

SYDSTL

Sydney Kingsford Smith

Tue 19/1

11:50-16:26

2 stops21h 36m

Lambert-St Louis

Fri 12/2

13:08-09:05

3 stops26h 57m

$1,812

SydneySt. Louis

SYD Sydney Kingsford Smith - STL Lambert-St Louis

SYDSTL

Sydney Kingsford Smith

Wed 21/10

11:55-23:44

3 stops27h 49m

Lambert-St Louis

Sat 14/11

08:50-10:35

3 stops32h 45m

$2,032

SydneySt. Louis

SYD Sydney Kingsford Smith - STL Lambert-St Louis

SYDSTL

Sydney Kingsford Smith

Sat 14/11

11:50-22:15

2 stops27h 25m

Lambert-St Louis

Mon 23/11

10:53-08:35

3 stops28h 42m

$2,035

SydneySt. Louis

SYD Sydney Kingsford Smith - STL Lambert-St Louis

SYDSTL

Sydney Kingsford Smith

Sun 15/11

11:20-23:45

1 stop29h 25m

Lambert-St Louis

Thu 3/12

19:06-19:55

2 stops31h 49m

$2,091

Flights are sorted by cheapest return flights first.

Deals found on 12/8

Showing 1-10 of 19 resultsSorted by cheapest first
1
2

Best time to book a flight to St. Louis

Have a flexible travel schedule? Discover the best time to fly to 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.

Cheapflights Insights

Everything you need to know about your flight to St. Louis

What are the cheapest airlines that fly to St. Louis?

The cheapest airlines flying from Sydney to St. Louis are United Airlines, American Airlines and Qantas Airways.

Reviews of airlines servicing St. Louis

Get insights into the airlines that provide service to 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 an airline for your flight to St. Louis. Reviews last updated 15 August 2026.
Get a feel of what it's like to fly with Qantas Airways,United Airlines, andAmerican Airlines to the United States 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.
Qantas Airways
7.5
Good
1,081 reviews
Check prices

Overall

7.5

Boarding

7.7

Entertainment

7.2

Crew

8.1

Food

7.0

Comfort

7.4

Reviews

1 / 20
10.0
Excellent

Tania,May 2026

SYD - DFW

The trip was great and the flight attendants were lovely. It was my honeymoon and ai thought I lost my gold brecelet. They searched until they found it and gave us a bottle of champaign to celebrate our honeymoon. They were lovely!
Qantas Airways
7.5
Good
1,081 reviews
Qantas Airways
7.5
Good
1,081 reviews
Check prices

Overall

7.5

Boarding

7.7

Entertainment

7.2

Crew

8.1

Food

7.0

Comfort

7.4

Reviews

1 / 20
10.0
Excellent

Tania,May 2026

SYD - DFW

The trip was great and the flight attendants were lovely. It was my honeymoon and ai thought I lost my gold brecelet. They searched until they found it and gave us a bottle of champaign to celebrate our honeymoon. They were lovely!
United Airlines
7.4
Good
10,108 reviews
Qantas Airways
7.5
Good
1,081 reviews
Check prices

Overall

7.5

Boarding

7.7

Entertainment

7.2

Crew

8.1

Food

7.0

Comfort

7.4

Reviews

1 / 20
10.0
Excellent

Tania,May 2026

SYD - DFW

The trip was great and the flight attendants were lovely. It was my honeymoon and ai thought I lost my gold brecelet. They searched until they found it and gave us a bottle of champaign to celebrate our honeymoon. They were lovely!
American Airlines
7.1
Good
11,927 reviews
Qantas Airways
7.5
Good
1,081 reviews
Check prices

Overall

7.5

Boarding

7.7

Entertainment

7.2

Crew

8.1

Food

7.0

Comfort

7.4

Reviews

1 / 20
10.0
Excellent

Tania,May 2026

SYD - DFW

The trip was great and the flight attendants were lovely. It was my honeymoon and ai thought I lost my gold brecelet. They searched until they found it and gave us a bottle of champaign to celebrate our honeymoon. They were lovely!

FAQs about flying to St. Louis

  • What airport do you fly into for flights to St. Louis?

    If you book a flight to St. Louis, you will be flying into Lambert-St Louis, which is the city’s only airport. Lambert-St Louis (STL) is located 20.4 km from the centre of St. Louis.

  • Can I find cheaper flights to St. Louis if I am willing to have stopovers?

    Yes, flights with stopovers are often cheaper than direct flights. Keep an eye out for flight deals to St. Louis on Cheapflights that require 1 or 2 stops for potential cost savings.

  • What is the best airline to fly to St. Louis?

    Based on reviews from Cheapflights users, Qantas Airways is rated the highest out of the airlines that fly to St. Louis.

  • What is the cheapest airport to fly to in St. Louis?

    Lambert-St Louis is currently the cheapest airport to fly to in St. Louis. One-way flights to Lambert-St Louis typically cost $167, while return flights cost around $927.

  • How much is a return flight to St. Louis?

    A return flight to St. Louis will typically cost around $927, however they can be found for as little as $927.

  • Where does the fastest flight to St. Louis depart from?

    For those looking to save time traveling to St. Louis, Melbourne offers the quickest one-way flight (19 hours 45 minutes).

  • Does Lambert-St Louis have car hire?

    Yes. Those touching down at Lambert-St Louis can take advantage of the car hire services offered upon their arrival.

  • Are there hotels close to Lambert-St Louis?

    Yes. Lambert-St Louis has hotels nearby for those requiring accommodations. St Ann Townhome Less Than 1 Mi to International Airport! is the closest property to Lambert-St Louis (0.0 km away from Lambert-St Louis).

See more FAQs

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