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$1,016+ 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 3/8. Fares are subject to change and may not be available on all flights or dates of travel.
— STL
27 Apr — 4 May1
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 28 March 2026.

Wed 20/509:20
SYD
-
STL
2 stops41h 46m
Air Canada
Thu 28/507:05
STL
-
SYD
2 stops33h 15m
Air Canada
Deal found 27/3$1,594
Thu 14/509:20
SYD
-
STL
2 stops50h 23m
Air Canada
Sun 7/607:05
STL
-
SYD
2 stops57h 15m
Air Canada
Deal found 25/3$1,810
Fri 7/809:20
SYD
-
STL
2 stops43h 42m
Air Canada
Mon 31/812:10
STL
-
SYD
3 stops52h 10m
Air Canada
Deal found 24/3$1,825
Mon 11/509:20
SYD
-
STL
2 stops26h 05m
Air Canada
Mon 18/513:05
STL
-
SYD
3 stops51h 15m
Air Canada
Deal found 27/3$1,844
Sun 10/509:20
SYD
-
STL
2 stops50h 23m
Air Canada
Sun 17/514:15
STL
-
SYD
2 stops50h 05m
Air Canada
Deal found 26/3$1,879

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 28 March 2026.

Return from

$1,594

One-way from

$1,016

Popular in

July

Cheapest in

May

Average price

$1,739
Air Canada
  • Air Canada
  • 20/5-28/5
  • 4 total stops
  • 75h 01m total
  • Sydney to St. Louis
Search Deals
3/8
  • 3/8
  • 3 total stops
  • 30h 49m total
  • Sydney to St. Louis
Search Deals
Highest demand for flights based on searches. 2% potential increase in price ($50 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($56 potential savings vs. average return price).
Search Deals
Average for return flights in March 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 28 March 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

Wed 20/5

09:20-16:57

2 stops22h 37m

Lambert-St Louis

Thu 28/5

07:05-07:20

2 stops33h 15m

$1,809

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Sun 10/5

09:20-20:43

2 stops50h 23m

Lambert-St Louis

Sun 17/5

14:15-07:20

2 stops50h 05m

$1,879
Fastest return journey

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Fri 7/8

12:00-16:42

1 stop19h 42m

Lambert-St Louis

Mon 31/8

17:11-06:55

1 stop22h 44m

$2,018

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Fri 7/8

09:10-23:08

1 stop28h 58m

Lambert-St Louis

Mon 31/8

16:18-07:05

2 stops23h 47m

$2,031

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Wed 20/5

09:10-23:59

1 stop29h 49m

Lambert-St Louis

Thu 28/5

14:37-07:05

2 stops25h 28m

$2,040

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Wed 20/5

12:00-19:30

1 stop22h 30m

Lambert-St Louis

Thu 28/5

06:35-07:05

1 stop33h 30m

$2,049

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Wed 20/5

09:20-20:43

2 stops26h 23m

Lambert-St Louis

Sun 24/5

05:10-07:20

2 stops35h 10m

$2,088

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Sat 2/5

09:10-23:57

1 stop29h 47m

Lambert-St Louis

Mon 18/5

06:21-07:05

1 stop33h 44m

$2,133
Cheapest one-way

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Sat 1/8

06:00-23:59

3 stops32h 59m

$1,019

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Fri 31/7

20:45-23:59

2 stops42h 14m

$1,161

Flights are sorted by cheapest return flights first.

Deals found on 26/3

Showing 1-10 of 18 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 28 March 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
1,013 reviews
Check prices

Comfort

7.5

Overall

7.5

Food

7.0

Boarding

7.7

Crew

8.1

Entertainment

7.2

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
1,013 reviews
Qantas Airways
7.5
Good
1,013 reviews
Check prices

Comfort

7.5

Overall

7.5

Food

7.0

Boarding

7.7

Crew

8.1

Entertainment

7.2

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
9,499 reviews
Qantas Airways
7.5
Good
1,013 reviews
Check prices

Comfort

7.5

Overall

7.5

Food

7.0

Boarding

7.7

Crew

8.1

Entertainment

7.2

Reviews

1 / 20
2.0
Mediocre

Midhat,Feb 2026

WYA - ADL

Frequent delays, 3rd week in a row. Flight attendants not at all friendly.
American Airlines
7.1
Good
11,520 reviews
Qantas Airways
7.5
Good
1,013 reviews
Check prices

Comfort

7.5

Overall

7.5

Food

7.0

Boarding

7.7

Crew

8.1

Entertainment

7.2

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
10,853 reviews
Qantas Airways
7.5
Good
1,013 reviews
Check prices

Comfort

7.5

Overall

7.5

Food

7.0

Boarding

7.7

Crew

8.1

Entertainment

7.2

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, United Airlines 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, Melbourne offers the quickest one-way flight (20 hours 55 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. 3-bedroom building in serene Saint Ann with WiFi, AC 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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