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$743+ 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 4/9. Fares are subject to change and may not be available on all flights or dates of travel.
— STL
7 Sep — 14 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 8 August 2026.

Wed 9/913:15 -
3 stops37h 02m
Sat 19/912:17 -
3 stops43h 08m
Deal found 4/8$1,332
Tue 11/809:10 -
2 stops22h 31m
Sun 23/806:36 -
2 stops33h 29m
Deal found 5/8$1,414
Mon 10/810:20 -
1 stop22h 57m
Sun 23/809:00 -
2 stops31h 00m
Deal found 5/8$1,440
Thu 12/1111:20 -
2 stops22h 37m
Mon 16/1108:50 -
2 stops31h 45m
Deal found 3/8$1,454
Mon 10/809:10 -
2 stops26h 16m
Fri 28/815:32 -
2 stops24h 33m
Deal found 5/8$1,485
Thu 12/1109:20 -
1 stop21h 53m
Mon 16/1117:55 -
1 stop44h 05m
Deal found 3/8$1,505
Sun 9/810:20 -
1 stop22h 57m
Sun 23/809:00 -
2 stops31h 00m
Deal found 5/8$1,511
Wed 9/909:10 -
1 stop29h 20m
Sat 19/906:20 -
1 stop33h 45m
Deal found 4/8$1,516
Mon 21/910:20 -
2 stops21h 14m
Wed 30/913:29 -
2 stops26h 31m
Deal found 4/8$1,529
Wed 21/1010:20 -
2 stops43h 40m
Sat 14/1116:05 -
2 stops48h 30m
Deal found 5/8$1,539

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 8 August 2026.

Return from

$1,332

One-way from

$743

Popular in

April

Cheapest in

September

Average price

$1,509
9/9-19/9
  • 9/9-19/9
  • 6 total stops
  • 80h 10m total
  • Sydney to St. Louis
Search Deals
4/9
  • 4/9
  • 3 total stops
  • 43h 35m total
  • Sydney to St. Louis
Search Deals
Highest demand for flights based on searches. 11% potential increase in price ($220 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($48 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 8 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

Thu 12/11

11:20-23:15

3 stops28h 55m

Lambert-St Louis

Mon 16/11

09:40-09:35

3 stops30h 55m

$1,477

SydneySt. Louis

SYD Sydney Kingsford Smith - STL Lambert-St Louis

SYDSTL

Sydney Kingsford Smith

Thu 12/11

09:20-14:13

1 stop21h 53m

Lambert-St Louis

Mon 16/11

17:55-07:00

1 stop44h 05m

$1,505
Fastest return journey

SydneySt. Louis

SYD Sydney Kingsford Smith - STL Lambert-St Louis

SYDSTL

Sydney Kingsford Smith

Mon 21/9

10:20-16:34

2 stops21h 14m

Lambert-St Louis

Wed 30/9

13:29-07:00

2 stops26h 31m

$1,529

SydneySt. Louis

SYD Sydney Kingsford Smith - STL Lambert-St Louis

SYDSTL

Sydney Kingsford Smith

Wed 9/9

09:15-20:35

2 stops26h 20m

Lambert-St Louis

Sat 19/9

08:00-06:50

2 stops31h 50m

$1,814

SydneySt. Louis

SYD Sydney Kingsford Smith - STL Lambert-St Louis

SYDSTL

Sydney Kingsford Smith

Wed 21/10

13:00-23:42

1 stop26h 42m

Lambert-St Louis

Sat 14/11

06:02-06:25

1 stop31h 23m

$1,898

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

13:40-10:35

3 stops27h 55m

$2,036

SydneySt. Louis

SYD Sydney Kingsford Smith - STL Lambert-St Louis

SYDSTL

Sydney Kingsford Smith

Wed 20/1

11:50-20:59

3 stops26h 09m

Lambert-St Louis

Sat 13/2

13:30-08:35

3 stops26h 05m

$2,037

SydneySt. Louis

SYD Sydney Kingsford Smith - STL Lambert-St Louis

SYDSTL

Sydney Kingsford Smith

Wed 9/9

11:55-23:40

3 stops26h 45m

Lambert-St Louis

Sat 19/9

15:13-10:40

2 stops28h 27m

$2,234

SydneySt. Louis

SYD Sydney Kingsford Smith - STL Lambert-St Louis

SYDSTL

Sydney Kingsford Smith

Wed 2/9

09:55-22:27

2 stops27h 32m

Lambert-St Louis

Thu 3/9

13:36-08:45

3 stops28h 09m

$2,236

SydneySt. Louis

SYD Sydney Kingsford Smith - STL Lambert-St Louis

SYDSTL

Sydney Kingsford Smith

Mon 1/2

11:50-20:59

3 stops26h 09m

Lambert-St Louis

Fri 26/2

09:13-10:35

3 stops32h 22m

$2,343

Flights are sorted by cheapest return flights first.

Deals found on 4/8

Showing 1-10 of 15 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 8 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
1,079 reviews
Check prices

Crew

8.1

Entertainment

7.2

Boarding

7.7

Comfort

7.4

Overall

7.5

Food

7.0

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
1,079 reviews
Qantas Airways
7.5
Good
1,079 reviews
Check prices

Crew

8.1

Entertainment

7.2

Boarding

7.7

Comfort

7.4

Overall

7.5

Food

7.0

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
10,084 reviews
Qantas Airways
7.5
Good
1,079 reviews
Check prices

Crew

8.1

Entertainment

7.2

Boarding

7.7

Comfort

7.4

Overall

7.5

Food

7.0

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
11,885 reviews
Qantas Airways
7.5
Good
1,079 reviews
Check prices

Crew

8.1

Entertainment

7.2

Boarding

7.7

Comfort

7.4

Overall

7.5

Food

7.0

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, Air Canada 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 $168, while return flights cost around $930.

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

    A return flight to St. Louis will typically cost around $930, however they can be found for as little as $930.

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

    For those looking to save time traveling to St. Louis, Sydney Kingsford Smith offers the quickest one-way flight (19 hours 9 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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