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$975+ 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 17/10. Fares are subject to change and may not be available on all flights or dates of travel.
— STL
26 May — 2 Jun1
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 26 April 2026.

Wed 20/509:20
SYD
-
STL
2 stops41h 46m
Multiple Airlines
Thu 28/516:48
STL
-
SYD
2 stops23h 32m
Multiple Airlines
Deal found 25/4$1,433
Mon 25/509:20
SYD
-
STL
2 stops41h 46m
Air Canada
Wed 5/812:10
STL
-
SYD
2 stops52h 10m
Air Canada
Deal found 23/4$1,495
Wed 20/509:20
SYD
-
STL
2 stops26h 05m
Air Canada
Thu 28/513:05
STL
-
SYD
3 stops51h 15m
Air Canada
Deal found 23/4$1,496
Mon 10/809:20
SYD
-
STL
2 stops50h 19m
Air Canada
Thu 3/905:10
STL
-
SYD
2 stops35h 10m
Air Canada
Deal found 25/4$1,513
Fri 22/509:20
SYD
-
STL
2 stops22h 13m
Air Canada
Fri 29/516:48
STL
-
SYD
2 stops23h 32m
Air Canada
Deal found 21/4$1,528
Fri 22/509:20
SYD
-
STL
2 stops26h 05m
Air Canada
Sun 31/513:05
STL
-
SYD
2 stops51h 15m
Air Canada
Deal found 23/4$1,538
Sun 7/609:20
SYD
-
STL
2 stops50h 05m
Air Canada
Sun 14/613:05
STL
-
SYD
2 stops51h 15m
Air Canada
Deal found 22/4$1,540
Fri 8/509:20
SYD
-
STL
2 stops44h 08m
Air Canada
Tue 12/507:05
STL
-
SYD
2 stops33h 15m
Air Canada
Deal found 21/4$1,549

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 26 April 2026.

Return from

$1,435

One-way from

$975

Popular in

April

Cheapest in

September

Average price

$2,293
20/5-28/5
  • 20/5-28/5
  • 4 total stops
  • 65h 18m total
  • Sydney to St. Louis
Search Deals
17/10
  • 17/10
  • 3 total stops
  • 29h 45m total
  • Sydney to St. Louis
Search Deals
Highest demand for flights based on searches. 5% potential increase in price ($98 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($42 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 26 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

Mon 10/8

17:50-22:55

1 stop20h 05m

Lambert-St Louis

Thu 3/9

06:00-07:05

1 stop34h 05m

$1,754

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Mon 10/8

10:20-18:17

1 stop22h 57m

Lambert-St Louis

Thu 3/9

16:40-06:55

2 stops23h 15m

$1,769

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Fri 14/8

09:30-21:22

2 stops26h 52m

Lambert-St Louis

Sun 6/9

13:18-07:00

2 stops26h 42m

$2,167

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Wed 5/8

11:55-23:57

3 stops27h 02m

Lambert-St Louis

Sat 29/8

13:18-10:40

3 stops30h 22m

$2,416

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Mon 10/8

06:25-19:14

3 stops27h 49m

Lambert-St Louis

Thu 3/9

15:35-07:30

2 stops24h 55m

$2,539
Fastest return journey

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Wed 8/7

10:20-16:33

2 stops21h 13m

Lambert-St Louis

Mon 20/7

19:23-06:55

1 stop20h 32m

$2,707

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Fri 14/8

11:55-23:50

3 stops26h 55m

Lambert-St Louis

Sun 6/9

13:36-08:45

3 stops28h 09m

$2,709
Cheapest one-way

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Sat 17/10

09:20-23:05

3 stops29h 45m

$975

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Sat 2/5

09:15-23:36

2 stops29h 21m

$1,149

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Sat 2/5

20:45-19:21

3 stops37h 36m

$1,509

Flights are sorted by cheapest return flights first.

Deals found on 21/4

Showing 1-10 of 13 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 26 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
1,027 reviews
Check prices

Crew

8.1

Food

7.0

Comfort

7.5

Entertainment

7.2

Boarding

7.7

Overall

7.5

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
1,027 reviews
Qantas Airways
7.5
Good
1,027 reviews
Check prices

Crew

8.1

Food

7.0

Comfort

7.5

Entertainment

7.2

Boarding

7.7

Overall

7.5

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
9,653 reviews
Qantas Airways
7.5
Good
1,027 reviews
Check prices

Crew

8.1

Food

7.0

Comfort

7.5

Entertainment

7.2

Boarding

7.7

Overall

7.5

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
11,673 reviews
Qantas Airways
7.5
Good
1,027 reviews
Check prices

Crew

8.1

Food

7.0

Comfort

7.5

Entertainment

7.2

Boarding

7.7

Overall

7.5

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, Brisbane offers the quickest one-way flight (21 hours 1 minute).

  • 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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