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$866+ 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 2/3. Fares are subject to change and may not be available on all flights or dates of travel.
— STL
14 Mar — 21 Mar1
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 12 February 2026.

Fri 15/509:20
SYD
-
STL
2 stops41h 46m
Air Canada
Sat 6/607:30
STL
-
SYD
2 stops56h 50m
Air Canada
Deal found 9/2$1,346
Thu 19/211:20
SYD
-
STL
2 stops25h 09m
American Airlines
Mon 23/211:46
STL
-
SYD
2 stops28h 14m
American Airlines
Deal found 8/2$1,478
Tue 30/609:30
SYD
-
STL
2 stops29h 59m
United Airlines
Wed 22/719:06
STL
-
SYD
1 stop20h 49m
United Airlines
Deal found 11/2$1,495
Mon 29/610:20
SYD
-
STL
1 stop22h 33m
United Airlines
Mon 6/719:06
STL
-
SYD
1 stop20h 49m
United Airlines
Deal found 12/2$1,504
Thu 19/211:50
SYD
-
STL
1 stop20h 48m
United Airlines
Mon 23/216:28
STL
-
SYD
1 stop21h 32m
United Airlines
Deal found 8/2$1,505
Fri 5/609:30
SYD
-
STL
2 stops26h 08m
United Airlines
Sun 28/613:13
STL
-
SYD
2 stops26h 47m
United Airlines
Deal found 9/2$1,544
Sat 6/617:50
SYD
-
STL
1 stop21h 06m
American Airlines
Mon 29/617:18
STL
-
SYD
1 stop22h 37m
American Airlines
Deal found 10/2$1,547

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 12 February 2026.

Return from

$1,346

One-way from

$866

Popular in

July

Cheapest in

August

Average price

$1,755
Air Canada
  • Air Canada
  • 15/5-6/6
  • 4 total stops
  • 98h 36m total
  • Sydney to St. Louis
Search Deals
2/3
  • 2/3
  • 3 total stops
  • 26h 59m total
  • Sydney to St. Louis
Search Deals
Highest demand for flights based on searches. 3% potential increase in price ($70 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($53 potential savings vs. average return price).
Search Deals
Average for return flights in February 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 12 February 2026.
Use the filters below to find and compare flights to St. Louis that are best for you.

Fly from

Sydney

Route

Depart

Return

Price

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Fri 15/5

09:20-12:06

2 stops41h 46m

Lambert-St Louis

Sat 6/6

07:30-07:20

2 stops56h 50m

$1,346

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Tue 30/6

09:30-00:29

2 stops29h 59m

Lambert-St Louis

Wed 22/7

19:06-06:55

1 stop20h 49m

$1,495

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Mon 29/6

10:20-17:53

1 stop22h 33m

Lambert-St Louis

Wed 22/7

19:06-06:55

1 stop20h 49m

$1,504

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Mon 29/6

10:20-17:53

1 stop22h 33m

Lambert-St Louis

Mon 6/7

19:06-06:55

1 stop20h 49m

$1,504

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Fri 5/6

09:30-20:38

2 stops26h 08m

Lambert-St Louis

Sun 28/6

13:13-07:00

2 stops26h 47m

$1,544

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Sat 6/6

17:50-23:56

1 stop21h 06m

Lambert-St Louis

Mon 29/6

17:18-06:55

1 stop22h 37m

$1,547

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Sat 6/6

09:30-19:28

2 stops24h 58m

Lambert-St Louis

Mon 29/6

19:06-06:55

1 stop20h 49m

$1,553

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Sun 7/6

09:30-16:34

2 stops22h 04m

Lambert-St Louis

Tue 30/6

09:23-06:55

2 stops30h 32m

$1,553

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Tue 30/6

09:30-21:11

2 stops26h 41m

Lambert-St Louis

Thu 23/7

19:06-06:55

1 stop20h 49m

$1,554

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Mon 2/3

14:00-23:59

3 stops26h 59m

$866

Flights are sorted by cheapest return flights first.

Deals found on 10/2

Showing 1-10 of 11 results
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, Air Canada 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 12 February 2026.
Get a feel of what it's like to fly with Qantas Airways, United Airlines, andAir Canada 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
988 reviews
Check prices

Boarding

7.7

Comfort

7.5

Crew

8.1

Overall

7.5

Entertainment

7.2

Food

7.0

Reviews

1 / 20
2.0
Mediocre

Midhat,Feb 2026

WYA - ADL

Frequent delays, 3rd week in a row. Flight attendants not at all friendly.
Qantas Airways
7.5
Good
988 reviews
Qantas Airways
7.5
Good
988 reviews
Check prices

Boarding

7.7

Comfort

7.5

Crew

8.1

Overall

7.5

Entertainment

7.2

Food

7.0

Reviews

1 / 20
2.0
Mediocre

Midhat,Feb 2026

WYA - ADL

Frequent delays, 3rd week in a row. Flight attendants not at all friendly.
United Airlines
7.4
Good
9,281 reviews
Qantas Airways
7.5
Good
988 reviews
Check prices

Boarding

7.7

Comfort

7.5

Crew

8.1

Overall

7.5

Entertainment

7.2

Food

7.0

Reviews

1 / 20
2.0
Mediocre

Midhat,Feb 2026

WYA - ADL

Frequent delays, 3rd week in a row. Flight attendants not at all friendly.
Air Canada
7.1
Good
10,709 reviews
Qantas Airways
7.5
Good
988 reviews
Check prices

Boarding

7.7

Comfort

7.5

Crew

8.1

Overall

7.5

Entertainment

7.2

Food

7.0

Reviews

1 / 20
2.0
Mediocre

Midhat,Feb 2026

WYA - ADL

Frequent delays, 3rd week in a row. Flight attendants not at all friendly.

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.

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

    For those looking to save time traveling to St. Louis, Brisbane offers the quickest one-way flight (21 hours 48 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. Hampton Inn St. Louis-Airport is the closest property to Lambert-St Louis (0.0 km away from Lambert-St Louis).

See more FAQs

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Certainly. Search results for flights to St. Louis shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

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