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$890+ 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 8/6. Fares are subject to change and may not be available on all flights or dates of travel.
— STL
21 Jun — 28 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 22 May 2026.

Thu 28/509:10
SYD
-
STL
1 stop29h 46m
Qantas Airways
Sun 7/606:35
STL
-
SYD
1 stop33h 30m
Qantas Airways
Deal found 20/5$1,410
Thu 28/509:10
SYD
-
STL
2 stops22h 20m
American Airlines
Sun 7/606:35
STL
-
SYD
1 stop33h 30m
American Airlines
Deal found 20/5$1,414
Thu 4/609:10
SYD
-
STL
2 stops24h 20m
American Airlines
Sat 13/620:39
STL
-
SYD
2 stops43h 26m
American Airlines
Deal found 21/5$1,415
Thu 4/609:10
SYD
-
STL
1 stop29h 46m
Qantas Airways
Sat 13/606:35
STL
-
SYD
1 stop33h 30m
Qantas Airways
Deal found 21/5$1,431
Thu 4/610:20
SYD
-
STL
1 stop22h 57m
United Airlines
Sat 13/619:05
STL
-
SYD
2 stops44h 50m
United Airlines
Deal found 21/5$1,441
Wed 17/610:20
SYD
-
STL
1 stop22h 57m
United Airlines
Wed 24/613:13
STL
-
SYD
2 stops26h 47m
United Airlines
Deal found 17/5$1,445
Wed 10/612:00
SYD
-
STL
1 stop26h 59m
American Airlines
Wed 17/606:35
STL
-
SYD
1 stop33h 30m
American Airlines
Deal found 21/5$1,449
Wed 3/609:10
SYD
-
STL
2 stops43h 42m
American Airlines
Sun 7/607:04
STL
-
SYD
1 stop32h 51m
American Airlines
Deal found 17/5$1,464
Wed 20/512:00
SYD
-
STL
1 stop20h 21m
American Airlines
Thu 28/506:35
STL
-
SYD
1 stop33h 30m
American Airlines
Deal found 19/5$1,478

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 22 May 2026.

Return from

$1,414

One-way from

$890

Popular in

July

Cheapest in

September

Average price

$1,613
American Airlines
  • American Airlines
  • 4/6-13/6
  • 4 total stops
  • 65h 49m total
  • Sydney to St. Louis
Search Deals
Delta
  • Delta
  • 8/6
  • 2 total stops
  • 29h 08m total
  • Sydney to St. Louis
Search Deals
Highest demand for flights based on searches. 9% potential increase in price ($201 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($60 potential savings vs. average return price).
Search Deals
Average for return flights in May 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 22 May 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 4/6

10:20-18:17

1 stop22h 57m

Lambert-St Louis

Sat 13/6

19:05-06:55

2 stops44h 50m

$1,441

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Fri 12/6

09:30-16:33

2 stops22h 03m

Lambert-St Louis

Sun 5/7

19:23-06:55

1 stop20h 32m

$1,515

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Thu 2/7

10:20-08:34

2 stops37h 14m

Lambert-St Louis

Thu 9/7

14:57-07:00

2 stops25h 03m

$1,516

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Fri 3/7

09:30-20:43

2 stops26h 13m

Lambert-St Louis

Sat 11/7

19:23-06:55

1 stop20h 32m

$1,579

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Fri 12/6

09:20-12:06

2 stops41h 46m

Lambert-St Louis

Sun 5/7

08:55-07:20

2 stops31h 25m

$1,794

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Sat 19/9

09:15-23:37

2 stops29h 22m

Lambert-St Louis

Sun 27/9

14:15-06:50

2 stops25h 35m

$1,854

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Thu 2/7

10:20-12:11

2 stops40h 51m

Lambert-St Louis

Sat 11/7

19:23-06:55

1 stop20h 32m

$1,913
Fastest return journey

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Thu 2/7

17:50-23:59

1 stop21h 09m

Lambert-St Louis

Sat 11/7

19:23-06:55

1 stop20h 32m

$2,755

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Wed 3/6

10:20-18:17

1 stop22h 57m

Lambert-St Louis

Sun 7/6

19:23-06:55

1 stop20h 32m

$2,899
Cheapest one-way

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Mon 8/6

10:20-12:11

2 stops40h 51m

$890

Flights are sorted by cheapest return flights first.

Deals found on 21/5

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, 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 22 May 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
1,041 reviews
Check prices

Overall

7.5

Boarding

7.7

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
1,041 reviews
Qantas Airways
7.5
Good
1,041 reviews
Check prices

Overall

7.5

Boarding

7.7

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
9,752 reviews
Qantas Airways
7.5
Good
1,041 reviews
Check prices

Overall

7.5

Boarding

7.7

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
11,645 reviews
Qantas Airways
7.5
Good
1,041 reviews
Check prices

Overall

7.5

Boarding

7.7

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, Brisbane offers the quickest one-way flight (20 hours 0 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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