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$700+ 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 22/8. Fares are subject to change and may not be available on all flights or dates of travel.
— STL
10 May — 17 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 10 April 2026.

Wed 20/509:20
SYD
-
STL
2 stops26h 05m
Air Canada
Thu 11/616:48
STL
-
SYD
2 stops23h 32m
Air Canada
Deal found 10/4$1,714
Mon 18/509:20
SYD
-
STL
2 stops26h 05m
Air Canada
Mon 8/616:48
STL
-
SYD
2 stops23h 32m
Air Canada
Deal found 9/4$1,715
Wed 20/509:20
SYD
-
STL
2 stops41h 46m
Air Canada
Thu 28/513:38
STL
-
SYD
2 stops26h 42m
Air Canada
Deal found 7/4$1,746
Wed 20/509:20
SYD
-
STL
2 stops26h 05m
Air Canada
Fri 12/616:48
STL
-
SYD
2 stops23h 32m
Air Canada
Deal found 10/4$1,780
Thu 7/509:20
SYD
-
STL
2 stops41h 46m
Air Canada
Mon 11/517:59
STL
-
SYD
2 stops46h 21m
Air Canada
Deal found 8/4$1,789
Fri 15/509:20
SYD
-
STL
2 stops41h 46m
Air Canada
Tue 9/608:40
STL
-
SYD
2 stops31h 40m
Air Canada
Deal found 8/4$1,792
Fri 15/509:20
SYD
-
STL
2 stops44h 08m
Air Canada
Mon 8/616:48
STL
-
SYD
2 stops23h 32m
Air Canada
Deal found 8/4$1,831
Sun 24/509:20
SYD
-
STL
2 stops50h 05m
Air Canada
Sun 31/513:05
STL
-
SYD
2 stops51h 15m
Air Canada
Deal found 9/4$1,848

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 10 April 2026.

Return from

$1,714

One-way from

$700

Popular in

July

Cheapest in

September

Average price

$2,325
Air Canada
  • Air Canada
  • 20/5-11/6
  • 4 total stops
  • 49h 37m total
  • Sydney to St. Louis
Search Deals
22/8
  • 22/8
  • 3 total stops
  • 45h 28m total
  • Sydney to St. Louis
Search Deals
Highest demand for flights based on searches. 7% potential increase in price ($158 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($45 potential savings vs. average return price).
Search Deals
Average for return flights in April 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 10 April 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

09:20-20:25

2 stops26h 05m

Lambert-St Louis

Fri 12/6

16:48-07:20

2 stops23h 32m

$1,780

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Tue 19/5

09:30-16:39

2 stops22h 09m

Lambert-St Louis

Tue 16/6

13:38-07:00

2 stops26h 22m

$2,052
Fastest return journey

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Tue 19/5

10:20-18:22

1 stop23h 02m

Lambert-St Louis

Tue 9/6

19:23-06:55

1 stop20h 32m

$2,058

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Wed 20/5

09:10-23:59

1 stop29h 49m

Lambert-St Louis

Thu 11/6

06:35-07:05

1 stop33h 30m

$2,079

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Wed 20/5

10:20-18:22

1 stop23h 02m

Lambert-St Louis

Thu 28/5

19:23-06:55

1 stop20h 32m

$2,122

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Fri 22/5

09:10-23:56

1 stop29h 46m

Lambert-St Louis

Fri 29/5

19:20-12:30

2 stops50h 10m

$2,139

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Wed 6/5

09:20-13:13

2 stops42h 53m

Lambert-St Louis

Sun 10/5

07:05-07:20

2 stops33h 15m

$2,198

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Wed 20/5

09:20-12:06

2 stops41h 46m

Lambert-St Louis

Thu 28/5

13:05-07:20

3 stops51h 15m

$2,424
Cheapest one-way

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Sat 22/8

08:20-14:48

3 stops45h 28m

$700
Fastest single journey

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Sat 22/8

17:50-23:08

1 stop20h 18m

$1,563

Flights are sorted by cheapest return flights first.

Deals found on 9/4

Showing 1-10 of 12 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 10 April 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
1,018 reviews
Check prices

Crew

8.1

Entertainment

7.2

Comfort

7.4

Boarding

7.7

Overall

7.5

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
1,018 reviews
Qantas Airways
7.5
Good
1,018 reviews
Check prices

Crew

8.1

Entertainment

7.2

Comfort

7.4

Boarding

7.7

Overall

7.5

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
9,562 reviews
Qantas Airways
7.5
Good
1,018 reviews
Check prices

Crew

8.1

Entertainment

7.2

Comfort

7.4

Boarding

7.7

Overall

7.5

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.
American Airlines
7.1
Good
11,564 reviews
Qantas Airways
7.5
Good
1,018 reviews
Check prices

Crew

8.1

Entertainment

7.2

Comfort

7.4

Boarding

7.7

Overall

7.5

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, 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, Sydney Kingsford Smith offers the quickest one-way flight (22 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. 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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