Find flights
Airlines
Travel Guide

$1,616+ Cheap flights to St. Louis

— STL
19 Oct — 26 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

Tue 3/1114:05 -
1 stop20h 50m
Thu 26/1106:00 -
1 stop34h 00m
Deal found 18/9$1,616
Wed 21/1010:10 -
2 stops43h 34m
Sat 24/1015:20 -
1 stop23h 35m
Deal found 15/9$1,619
Mon 12/1013:00 -
1 stop21h 20m
Thu 5/1114:54 -
2 stops25h 06m
Deal found 19/9$1,792
Wed 21/1015:50 -
2 stops38h 40m
Sat 24/1006:02 -
2 stops45h 18m
Deal found 17/9$2,532
Mon 12/1010:20 -
3 stops48h 21m
Thu 5/1113:40 -
2 stops26h 55m
Deal found 19/9$2,538

Find flight deals to St. Louis

Return from

$1,616

One-way from

$1,616

Popular in

April

Cheapest in

September

Average price

$1,458
American Airlines
  • American Airlines
  • 3/11-26/11
  • 2 total stops
  • 54h 50m total
  • Sydney to St. Louis
Search Deals
10/1-31/12
  • 10/1-31/12
  • 3 total stops
  • 59h 51m total
  • Sydney to St. Louis
Search Deals
Highest demand for flights based on searches. 11% potential increase in price ($219 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($48 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 10/1

20:05-14:56

3 stops59h 51m

Lambert-St Louis

Wed 31/12

00:00-16:00

Nonstop0h 00m

$1,616

SydneySt. Louis

SYD Sydney Kingsford Smith - STL Lambert-St Louis

SYDSTL

Sydney Kingsford Smith

Sun 10/1

21:50-14:53

2 stops34h 03m

Lambert-St Louis

Wed 31/12

00:00-16:00

Nonstop0h 00m

$1,692

SydneySt. Louis

SYD Sydney Kingsford Smith - STL Lambert-St Louis

SYDSTL

Sydney Kingsford Smith

Tue 3/11

11:10-17:55

2 stops23h 45m

Lambert-St Louis

Thu 26/11

12:44-09:00

2 stops27h 16m

$1,787
Fastest return journey

SydneySt. Louis

SYD Sydney Kingsford Smith - STL Lambert-St Louis

SYDSTL

Sydney Kingsford Smith

Sat 9/1

11:15-23:33

1 stop29h 18m

Lambert-St Louis

Wed 31/12

00:00-16:00

Nonstop0h 00m

$1,827

SydneySt. Louis

SYD Sydney Kingsford Smith - STL Lambert-St Louis

SYDSTL

Sydney Kingsford Smith

Sun 10/1

09:15-22:13

1 stop29h 58m

Lambert-St Louis

Wed 31/12

00:00-16:00

Nonstop0h 00m

$1,876

SydneySt. Louis

SYD Sydney Kingsford Smith - STL Lambert-St Louis

SYDSTL

Sydney Kingsford Smith

Sat 9/1

16:05-10:20

3 stops59h 15m

Lambert-St Louis

Wed 31/12

00:00-16:00

Nonstop0h 00m

$2,029

SydneySt. Louis

SYD Sydney Kingsford Smith - STL Lambert-St Louis

SYDSTL

Sydney Kingsford Smith

Tue 16/3

06:35-23:44

3 stops57h 09m

Lambert-St Louis

Wed 31/12

00:00-16:00

Nonstop0h 00m

$2,169

SydneySt. Louis

SYD Sydney Kingsford Smith - STL Lambert-St Louis

SYDSTL

Sydney Kingsford Smith

Wed 21/10

15:50-14:30

2 stops38h 40m

Lambert-St Louis

Sat 24/10

06:02-19:20

2 stops45h 18m

$2,532

SydneySt. Louis

SYD Sydney Kingsford Smith - STL Lambert-St Louis

SYDSTL

Sydney Kingsford Smith

Tue 16/3

12:35-08:12

2 stops35h 37m

Lambert-St Louis

Wed 31/12

00:00-16:00

Nonstop0h 00m

$2,644

SydneySt. Louis

SYD Sydney Kingsford Smith - STL Lambert-St Louis

SYDSTL

Sydney Kingsford Smith

Wed 21/10

22:05-21:21

3 stops39h 16m

Lambert-St Louis

Sat 24/10

08:00-19:25

3 stops67h 25m

$2,661

Flights are sorted by cheapest return flights first.

Deals found on 17/9

Showing 1-10 of 12 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

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
1,102 reviews
Check prices

Entertainment

7.2

Crew

8.1

Food

7.0

Overall

7.5

Boarding

7.7

Comfort

7.4

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
1,102 reviews
Qantas Airways
7.5
Good
1,102 reviews
Check prices

Entertainment

7.2

Crew

8.1

Food

7.0

Overall

7.5

Boarding

7.7

Comfort

7.4

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
10,232 reviews
Qantas Airways
7.5
Good
1,102 reviews
Check prices

Entertainment

7.2

Crew

8.1

Food

7.0

Overall

7.5

Boarding

7.7

Comfort

7.4

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
7.0
Good
12,087 reviews
Qantas Airways
7.5
Good
1,102 reviews
Check prices

Entertainment

7.2

Crew

8.1

Food

7.0

Overall

7.5

Boarding

7.7

Comfort

7.4

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 $166, while return flights cost around $381.

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

    A return flight to St. Louis will typically cost around $402, however they can be found for as little as $381.

  • 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 50 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

Browse thousands of different options on Cheapflights for your next trip

Search flights to St. Louis by cabin class

First Class flights to St. Louis
Business Class flights to St. Louis
Prem Economy Class flights to St. Louis
Economy Class flights to St. Louis

Fly with Cheapflights

How does Cheapflights help users find flights to St. Louis?

900+ travel sites are searched through when a user searches for a flight using Cheapflights. From the search interface, users can use filters to choose airlines, airports, flight times, cabin classes and more to their preference. Book your flight to St. Louis today with Cheapflights!

Why should you use Cheapflights to find cheap flight tickets to St. Louis?

Millions of users choose and trust Cheapflights to book the best flight deals to St. Louis for free. We help you search and compare prices from hundreds of airlines for the right flight just for you.

Can Cheapflights find flights to St. Louis with no change fees?

Certainly. Search results for flights to St. Louis shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

Can Cheapflights notify me if prices for flights to St. Louis become cheaper?

Not ready to book yet? You can track prices for flights to St. Louis on Cheapflights with our Price Alerts feature and get notified when better prices are available.

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.