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$1,422+ Cheap flights to St. Louis

— STL
14 Oct — 21 Oct1
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

Mon 26/1010:20 -
2 stops45h 03m
Mon 2/1116:05 -
2 stops48h 30m
Deal found 11/9$1,422
Sun 15/1111:20 -
2 stops45h 06m
Sun 29/1116:05 -
2 stops48h 30m
Deal found 13/9$1,528
Mon 26/1011:10 -
1 stop28h 36m
Mon 2/1108:10 -
1 stop31h 50m
Deal found 11/9$1,560
Mon 26/1011:10 -
1 stop28h 36m
Mon 2/1114:54 -
2 stops25h 06m
Deal found 11/9$1,562
Wed 21/1010:20 -
2 stops29h 24m
Sat 24/1008:55 -
2 stops31h 40m
Deal found 13/9$1,569
Wed 21/1010:10 -
1 stop29h 36m
Sat 24/1019:10 -
2 stops24h 35m
Deal found 13/9$1,580
Thu 17/909:20 -
2 stops41h 42m
Fri 30/1016:39 -
2 stops23h 56m
Deal found 11/9$1,600

Find flight deals to St. Louis

Return from

$1,422

One-way from

$2,128

Popular in

April

Cheapest in

September

Average price

$1,449
Air Canada
  • Air Canada
  • 26/10-2/11
  • 4 total stops
  • 93h 33m total
  • Sydney to St. Louis
Search Deals
Qantas Airways
  • Qantas Airways
  • 4/1-31/12
  • 2 total stops
  • 40h 21m total
  • Sydney to St. Louis
Search Deals
Highest demand for flights based on searches. 11% potential increase in price ($218 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($47 potential savings vs. average return price).
Search Deals
Average for return flights in September 2026
Search Deals

Cheapflights Fare Finder

 
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 Sydney Kingsford Smith - STL Lambert-St Louis

SYDSTL

Sydney Kingsford Smith

Sun 15/11

11:20-23:24

3 stops29h 04m

Lambert-St Louis

Sun 29/11

16:05-09:35

2 stops48h 30m

$1,584

SydneySt. Louis

SYD Sydney Kingsford Smith - STL Lambert-St Louis

SYDSTL

Sydney Kingsford Smith

Wed 21/10

10:20-23:44

2 stops29h 24m

Lambert-St Louis

Sat 24/10

08:00-08:35

3 stops32h 35m

$1,600

SydneySt. Louis

SYD Sydney Kingsford Smith - STL Lambert-St Louis

SYDSTL

Sydney Kingsford Smith

Wed 20/1

14:05-16:28

1 stop19h 23m

Lambert-St Louis

Sat 13/2

06:30-09:00

1 stop33h 30m

$1,611

SydneySt. Louis

SYD Sydney Kingsford Smith - STL Lambert-St Louis

SYDSTL

Sydney Kingsford Smith

Wed 20/1

14:05-16:28

1 stop19h 23m

Lambert-St Louis

Sat 13/2

14:54-09:00

2 stops25h 06m

$1,707

SydneySt. Louis

SYD Sydney Kingsford Smith - STL Lambert-St Louis

SYDSTL

Sydney Kingsford Smith

Mon 4/1

18:45-18:06

2 stops40h 21m

Lambert-St Louis

Wed 31/12

00:00-16:00

Nonstop0h 00m

$2,128

SydneySt. Louis

SYD Sydney Kingsford Smith - STL Lambert-St Louis

SYDSTL

Sydney Kingsford Smith

Wed 9/12

10:40-23:26

2 stops29h 46m

Lambert-St Louis

Sat 2/1

11:15-08:30

2 stops28h 15m

$2,177

SydneySt. Louis

SYD Sydney Kingsford Smith - STL Lambert-St Louis

SYDSTL

Sydney Kingsford Smith

Mon 26/10

10:20-23:24

3 stops29h 04m

Lambert-St Louis

Mon 2/11

10:53-09:35

3 stops29h 42m

$2,276

SydneySt. Louis

SYD Sydney Kingsford Smith - STL Lambert-St Louis

SYDSTL

Sydney Kingsford Smith

Wed 21/10

11:20-18:43

1 stop23h 23m

Lambert-St Louis

Sat 24/10

15:12-07:00

1 stop23h 48m

$2,969
Fastest return journey

SydneySt. Louis

SYD Sydney Kingsford Smith - STL Lambert-St Louis

SYDSTL

Sydney Kingsford Smith

Mon 4/1

19:40-08:29

3 stops29h 49m

Lambert-St Louis

Wed 31/12

00:00-16:00

Nonstop0h 00m

$3,007

Flights are sorted by cheapest return flights first.

Deals found on 10/9

Sorted by cheapest first

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

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 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
1,094 reviews
Check prices

Comfort

7.4

Crew

8.1

Boarding

7.7

Overall

7.5

Entertainment

7.2

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
1,094 reviews
Qantas Airways
7.5
Good
1,094 reviews
Check prices

Comfort

7.4

Crew

8.1

Boarding

7.7

Overall

7.5

Entertainment

7.2

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
10,213 reviews
Qantas Airways
7.5
Good
1,094 reviews
Check prices

Comfort

7.4

Crew

8.1

Boarding

7.7

Overall

7.5

Entertainment

7.2

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
12,053 reviews
Qantas Airways
7.5
Good
1,094 reviews
Check prices

Comfort

7.4

Crew

8.1

Boarding

7.7

Overall

7.5

Entertainment

7.2

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, Qantas Airways is rated the highest out of the airlines that fly to St. Louis.

  • What is the cheapest airport to fly to in St. Louis?

    Lambert-St Louis is currently the cheapest airport to fly to in St. Louis. One-way flights to Lambert-St Louis typically cost $165, while return flights cost around $378.

  • How much is a return flight to St. Louis?

    A return flight to St. Louis will typically cost around $399, however they can be found for as little as $378.

  • Where does the fastest flight to St. Louis depart from?

    For those looking to save time traveling to St. Louis, Melbourne offers the quickest one-way flight (26 hours 47 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. St Ann Townhome Less Than 1 Mi to International Airport! is the closest property to Lambert-St Louis (0.0 km away from Lambert-St Louis).

See more FAQs

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