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$957+ 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
29 Aug — 5 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 30 July 2026.

Wed 9/913:15
SYD
-
STL
3 stops37h 02m
Multiple Airlines
Wed 16/912:17
STL
-
SYD
3 stops32h 33m
Multiple Airlines
Deal found 26/7$1,419
Wed 14/1010:20
SYD
-
STL
2 stops24h 21m
Air Canada
Sat 7/1116:05
STL
-
SYD
2 stops48h 30m
Air Canada
Deal found 28/7$1,463
Thu 27/809:20
SYD
-
STL
2 stops23h 39m
Multiple Airlines
Thu 10/908:55
STL
-
SYD
2 stops31h 25m
Multiple Airlines
Deal found 27/7$1,469
Thu 12/1111:20
SYD
-
STL
2 stops22h 37m
Air Canada
Mon 16/1108:50
STL
-
SYD
2 stops31h 45m
Air Canada
Deal found 27/7$1,473
Sun 1/1111:20
SYD
-
STL
3 stops27h 20m
Air Canada
Tue 24/1113:40
STL
-
SYD
2 stops26h 55m
Air Canada
Deal found 28/7$1,475
Thu 12/1109:20
SYD
-
STL
1 stop21h 53m
United Airlines
Mon 16/1117:55
STL
-
SYD
1 stop44h 05m
United Airlines
Deal found 29/7$1,514

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 30 July 2026.

Return from

$1,419

One-way from

$957

Popular in

April

Cheapest in

September

Average price

$1,525
9/9-16/9
  • 9/9-16/9
  • 6 total stops
  • 69h 35m total
  • Sydney to St. Louis
Search Deals
Qantas Airways
  • Qantas Airways
  • 31/8
  • 2 total stops
  • 29h 42m total
  • Sydney to St. Louis
Search Deals
Highest demand for flights based on searches. 7% potential increase in price ($135 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($52 potential savings vs. average return price).
Search Deals
Average for return flights in July 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 30 July 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 - STL

SYDSTL

Sydney Kingsford Smith

Thu 12/11

11:20-16:57

2 stops22h 37m

Lambert-St Louis

Mon 16/11

06:00-09:35

3 stops34h 35m

$1,475

SydneySt. Louis

SYD - STL

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

$1,514
Fastest return journey

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Thu 27/8

10:20-17:59

1 stop22h 39m

Lambert-St Louis

Thu 10/9

13:36-07:00

2 stops26h 24m

$1,525

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Thu 27/8

09:10-22:59

1 stop28h 49m

Lambert-St Louis

Thu 3/9

18:45-06:55

1 stop21h 10m

$1,556

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Sat 12/9

09:30-20:38

2 stops26h 08m

Lambert-St Louis

Sat 19/9

16:40-07:00

2 stops47h 20m

$1,596

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Tue 1/12

09:20-21:13

2 stops28h 53m

Lambert-St Louis

Thu 31/12

07:22-06:20

2 stops29h 58m

$1,745
Cheapest one-way

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Mon 31/8

20:00-23:42

3 stops42h 42m

$1,725
Fastest single journey

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Mon 31/8

12:00-18:05

1 stop21h 05m

$1,817

Flights are sorted by cheapest return flights first.

Deals found on 28/7

Sorted by cheapest first

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 30 July 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
1,073 reviews
Check prices

Entertainment

7.2

Boarding

7.7

Overall

7.5

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
1,073 reviews
Qantas Airways
7.5
Good
1,073 reviews
Check prices

Entertainment

7.2

Boarding

7.7

Overall

7.5

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
10,047 reviews
Qantas Airways
7.5
Good
1,073 reviews
Check prices

Entertainment

7.2

Boarding

7.7

Overall

7.5

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
11,847 reviews
Qantas Airways
7.5
Good
1,073 reviews
Check prices

Entertainment

7.2

Boarding

7.7

Overall

7.5

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, 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 $170, while return flights cost around $944.

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

    A return flight to St. Louis will typically cost around $944, however they can be found for as little as $944.

  • 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 (21 hours 53 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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