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$1,402+ 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 11/4. Fares are subject to change and may not be available on all flights or dates of travel.
— STL
28 Mar — 4 Apr1
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 February 2026.

Thu 12/311:20
SYD
-
STL
2 stops27h 38m
American Airlines
Mon 16/306:38
STL
-
SYD
1 stop34h 22m
American Airlines
Deal found 24/2$1,488
Thu 6/812:00
SYD
-
STL
1 stop19h 51m
Qantas Airways
Sun 30/819:46
STL
-
SYD
1 stop20h 09m
Qantas Airways
Deal found 23/2$1,497
Thu 12/311:20
SYD
-
STL
1 stop28h 38m
Qantas Airways
Sun 15/306:38
STL
-
SYD
1 stop34h 22m
Qantas Airways
Deal found 25/2$1,498
Thu 4/609:10
SYD
-
STL
2 stops25h 30m
American Airlines
Mon 8/614:38
STL
-
SYD
2 stops25h 27m
American Airlines
Deal found 23/2$1,506
Thu 4/610:20
SYD
-
STL
1 stop22h 57m
United Airlines
Mon 8/614:57
STL
-
SYD
2 stops25h 03m
United Airlines
Deal found 23/2$1,516
Thu 30/717:50
SYD
-
STL
1 stop21h 09m
American Airlines
Sun 9/815:33
STL
-
SYD
2 stops24h 32m
American Airlines
Deal found 23/2$1,518
Thu 6/810:20
SYD
-
STL
2 stops25h 23m
United Airlines
Sun 30/813:27
STL
-
SYD
2 stops26h 28m
United Airlines
Deal found 23/2$1,521
Thu 12/309:40
SYD
-
STL
2 stops29h 45m
Delta
Sun 15/309:52
STL
-
SYD
2 stops28h 13m
Delta
Deal found 25/2$1,525
Fri 7/817:50
SYD
-
STL
1 stop20h 18m
Qantas Airways
Mon 31/819:46
STL
-
SYD
1 stop20h 09m
Qantas Airways
Deal found 22/2$1,537

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 February 2026.

Return from

$1,488

One-way from

$1,402

Popular in

July

Cheapest in

August

Average price

$1,758
American Airlines
  • American Airlines
  • 12/3-16/3
  • 3 total stops
  • 62h 00m total
  • Sydney to St. Louis
Search Deals
11/4
  • 11/4
  • 3 total stops
  • 54h 47m total
  • Sydney to St. Louis
Search Deals
Highest demand for flights based on searches. 3% potential increase in price ($63 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 26 February 2026.
Use the filters below to find and compare flights to St. Louis that are best for you.

Fly from

Route

Depart

Return

Price

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Thu 12/3

11:20-23:58

1 stop28h 38m

Lambert-St Louis

Mon 16/3

06:38-09:00

1 stop34h 22m

$1,495

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Thu 6/8

17:50-23:08

1 stop20h 18m

Lambert-St Louis

Sun 30/8

19:46-06:55

1 stop20h 09m

$1,516

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Thu 30/7

12:00-19:46

2 stops22h 46m

Lambert-St Louis

Sun 9/8

15:33-07:05

2 stops24h 32m

$1,518

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Thu 6/8

10:20-16:33

2 stops21h 13m

Lambert-St Louis

Sun 30/8

19:06-06:55

1 stop20h 49m

$1,521

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Thu 12/3

09:40-23:25

2 stops29h 45m

Lambert-St Louis

Sun 15/3

09:52-06:05

2 stops28h 13m

$1,525

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Thu 12/3

17:35-23:58

2 stops22h 23m

Lambert-St Louis

Sun 15/3

06:38-09:00

1 stop34h 22m

$1,539

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Fri 7/8

09:30-20:42

2 stops26h 12m

Lambert-St Louis

Mon 31/8

16:17-07:00

2 stops23h 43m

$1,561

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Thu 6/8

09:20-18:27

3 stops48h 07m

Lambert-St Louis

Sun 30/8

08:55-07:20

2 stops55h 25m

$1,744

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Sat 11/4

19:40-11:27

3 stops54h 47m

$1,402

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Sat 11/4

09:10-23:57

1 stop29h 47m

$1,594

Flights are sorted by cheapest return flights first.

Deals found on 25/2

Showing 1-10 of 11 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, 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 26 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
998 reviews
Check prices

Comfort

7.4

Food

7.0

Boarding

7.7

Crew

8.1

Entertainment

7.2

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
998 reviews
Qantas Airways
7.5
Good
998 reviews
Check prices

Comfort

7.4

Food

7.0

Boarding

7.7

Crew

8.1

Entertainment

7.2

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
9,343 reviews
Qantas Airways
7.5
Good
998 reviews
Check prices

Comfort

7.4

Food

7.0

Boarding

7.7

Crew

8.1

Entertainment

7.2

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.
Air Canada
7.1
Good
10,746 reviews
Qantas Airways
7.5
Good
998 reviews
Check prices

Comfort

7.4

Food

7.0

Boarding

7.7

Crew

8.1

Entertainment

7.2

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, Sydney Kingsford Smith offers the quickest one-way flight (19 hours 51 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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