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$839+ 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 26/8. Fares are subject to change and may not be available on all flights or dates of travel.
— STL
17 Jul — 24 Jul1
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 17 June 2026.

Fri 28/809:10
SYD
-
STL
2 stops47h 27m
American Airlines
Mon 7/905:42
STL
-
SYD
1 stop34h 13m
American Airlines
Deal found 14/6$1,391
Wed 26/809:10
SYD
-
STL
1 stop28h 49m
American Airlines
Tue 8/906:36
STL
-
SYD
2 stops33h 29m
American Airlines
Deal found 12/6$1,414
Wed 26/809:10
SYD
-
STL
1 stop28h 49m
American Airlines
Mon 7/915:32
STL
-
SYD
2 stops24h 33m
American Airlines
Deal found 14/6$1,415
Wed 26/809:10
SYD
-
STL
1 stop28h 49m
American Airlines
Sun 6/918:45
STL
-
SYD
1 stop21h 10m
American Airlines
Deal found 12/6$1,425
Wed 26/817:50
SYD
-
STL
1 stop20h 09m
American Airlines
Wed 2/917:11
STL
-
SYD
2 stops22h 54m
American Airlines
Deal found 14/6$1,426
Thu 27/817:50
SYD
-
STL
1 stop20h 09m
American Airlines
Tue 8/908:36
STL
-
SYD
1 stop31h 19m
American Airlines
Deal found 14/6$1,436
Wed 26/810:20
SYD
-
STL
1 stop23h 19m
United Airlines
Mon 7/912:59
STL
-
SYD
2 stops27h 01m
United Airlines
Deal found 14/6$1,440
Wed 26/809:10
SYD
-
STL
1 stop28h 49m
Qantas Airways
Wed 9/906:30
STL
-
SYD
1 stop33h 35m
Qantas Airways
Deal found 12/6$1,479
Sat 29/812:00
SYD
-
STL
1 stop19h 14m
Qantas Airways
Mon 7/915:32
STL
-
SYD
1 stop24h 23m
Qantas Airways
Deal found 14/6$1,480
Tue 25/809:10
SYD
-
STL
1 stop28h 49m
Qantas Airways
Mon 7/906:00
STL
-
SYD
1 stop34h 30m
Qantas Airways
Deal found 14/6$1,481
Wed 26/809:10
SYD
-
STL
1 stop28h 49m
American Airlines
Thu 3/906:00
STL
-
SYD
1 stop34h 05m
American Airlines
Deal found 12/6$1,483

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 17 June 2026.

Return from

$1,391

One-way from

$839

Popular in

July

Cheapest in

September

Average price

$2,202
American Airlines
  • American Airlines
  • 28/8-7/9
  • 3 total stops
  • 81h 40m total
  • Sydney to St. Louis
Search Deals
Delta
  • Delta
  • 26/8
  • 2 total stops
  • 24h 40m total
  • Sydney to St. Louis
Search Deals
Highest demand for flights based on searches. 9% potential increase in price ($193 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($57 potential savings vs. average return price).
Search Deals
Average for return flights in June 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 17 June 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

Thu 30/7

09:20-18:42

2 stops48h 22m

Lambert-St Louis

Mon 3/8

12:10-07:20

2 stops52h 10m

$1,510

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Wed 26/8

09:15-16:44

2 stops22h 29m

Lambert-St Louis

Thu 3/9

15:50-06:50

2 stops24h 00m

$1,555

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Sat 1/8

09:30-19:23

2 stops24h 53m

Lambert-St Louis

Sat 8/8

13:38-06:55

2 stops26h 17m

$1,583

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Sat 29/8

09:15-23:31

2 stops29h 16m

Lambert-St Louis

Thu 3/9

12:52-06:50

2 stops26h 58m

$1,670

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Thu 16/7

17:50-23:59

1 stop21h 09m

Lambert-St Louis

Wed 22/7

06:37-07:30

1 stop33h 53m

$1,685
Fastest return journey

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Thu 30/7

10:20-18:17

1 stop22h 57m

Lambert-St Louis

Mon 3/8

19:23-06:55

1 stop20h 32m

$1,699

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Thu 6/8

09:30-17:42

2 stops23h 12m

Lambert-St Louis

Mon 10/8

16:48-06:55

2 stops23h 07m

$1,708

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Tue 1/9

09:30-20:46

2 stops26h 16m

Lambert-St Louis

Sat 5/9

16:40-07:00

2 stops23h 20m

$1,760

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Fri 28/8

10:20-18:39

1 stop23h 19m

Lambert-St Louis

Thu 3/9

08:42-06:55

1 stop31h 13m

$1,808
Cheapest one-way

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Thu 27/8

09:15-16:44

2 stops22h 29m

$845

Flights are sorted by cheapest return flights first.

Deals found on 16/6

Showing 1-10 of 16 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, Qantas Airways and American Airlines.

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 17 June 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
1,047 reviews
Check prices

Boarding

7.7

Overall

7.5

Comfort

7.5

Entertainment

7.2

Crew

8.1

Food

7.0

Reviews

1 / 20
10.0
Excellent

Tania,May 2026

SYD - DFW

The trip was great and the flight attendants were lovely. It was my honeymoon and ai thought I lost my gold brecelet. They searched until they found it and gave us a bottle of champaign to celebrate our honeymoon. They were lovely!
Qantas Airways
7.5
Good
1,047 reviews
Qantas Airways
7.5
Good
1,047 reviews
Check prices

Boarding

7.7

Overall

7.5

Comfort

7.5

Entertainment

7.2

Crew

8.1

Food

7.0

Reviews

1 / 20
10.0
Excellent

Tania,May 2026

SYD - DFW

The trip was great and the flight attendants were lovely. It was my honeymoon and ai thought I lost my gold brecelet. They searched until they found it and gave us a bottle of champaign to celebrate our honeymoon. They were lovely!
United Airlines
7.4
Good
9,848 reviews
Qantas Airways
7.5
Good
1,047 reviews
Check prices

Boarding

7.7

Overall

7.5

Comfort

7.5

Entertainment

7.2

Crew

8.1

Food

7.0

Reviews

1 / 20
10.0
Excellent

Tania,May 2026

SYD - DFW

The trip was great and the flight attendants were lovely. It was my honeymoon and ai thought I lost my gold brecelet. They searched until they found it and gave us a bottle of champaign to celebrate our honeymoon. They were lovely!
American Airlines
7.1
Good
11,674 reviews
Qantas Airways
7.5
Good
1,047 reviews
Check prices

Boarding

7.7

Overall

7.5

Comfort

7.5

Entertainment

7.2

Crew

8.1

Food

7.0

Reviews

1 / 20
10.0
Excellent

Tania,May 2026

SYD - DFW

The trip was great and the flight attendants were lovely. It was my honeymoon and ai thought I lost my gold brecelet. They searched until they found it and gave us a bottle of champaign to celebrate our honeymoon. They were lovely!

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, Sydney Kingsford Smith offers the quickest one-way flight (20 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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