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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 30/7. Fares are subject to change and may not be available on all flights or dates of travel.
— STL
26 Jun — 3 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 27 May 2026.

Wed 8/709:30
SYD
-
STL
2 stops23h 43m
United Airlines
Mon 20/705:10
STL
-
SYD
2 stops34h 45m
United Airlines
Deal found 24/5$1,440
Mon 10/809:20
SYD
-
STL
2 stops48h 22m
Air Canada
Fri 4/908:55
STL
-
SYD
2 stops31h 25m
Air Canada
Deal found 24/5$1,464
Mon 10/812:00
SYD
-
STL
1 stop21h 14m
Qantas Airways
Fri 4/915:32
STL
-
SYD
1 stop24h 23m
Qantas Airways
Deal found 24/5$1,481
Fri 12/609:30
SYD
-
STL
2 stops28h 59m
United Airlines
Sun 5/719:23
STL
-
SYD
1 stop20h 32m
United Airlines
Deal found 23/5$1,510
Mon 10/810:20
SYD
-
STL
1 stop22h 57m
United Airlines
Fri 4/913:36
STL
-
SYD
2 stops26h 19m
United Airlines
Deal found 27/5$1,517
Fri 20/1111:15
SYD
-
STL
1 stop29h 27m
American Airlines
Sat 28/1113:20
STL
-
SYD
1 stop24h 35m
American Airlines
Deal found 25/5$1,744

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 27 May 2026.

Return from

$1,440

One-way from

$890

Popular in

July

Cheapest in

September

Average price

$1,611
United Airlines
  • United Airlines
  • 8/7-20/7
  • 4 total stops
  • 58h 28m total
  • Sydney to St. Louis
Search Deals
Delta
  • Delta
  • 30/7
  • 2 total stops
  • 29h 38m total
  • Sydney to St. Louis
Search Deals
Highest demand for flights based on searches. 7% potential increase in price ($154 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($46 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 27 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

Wed 8/7

09:30-18:13

2 stops23h 43m

Lambert-St Louis

Mon 20/7

05:10-06:55

2 stops34h 45m

$1,440

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Mon 10/8

09:20-18:42

2 stops48h 22m

Lambert-St Louis

Fri 4/9

08:55-07:20

2 stops31h 25m

$1,464

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Fri 12/6

09:30-21:10

2 stops26h 40m

Lambert-St Louis

Sun 5/7

06:00-06:55

2 stops33h 55m

$1,510
Fastest return journey

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Mon 10/8

10:20-20:43

2 stops25h 23m

Lambert-St Louis

Fri 4/9

12:59-06:55

2 stops26h 56m

$1,518

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Fri 20/11

11:50-16:35

1 stop21h 45m

Lambert-St Louis

Sat 28/11

16:30-07:00

2 stops45h 30m

$1,910

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Wed 24/6

09:15-00:43

2 stops30h 28m

Lambert-St Louis

Wed 1/7

10:51-06:50

2 stops28h 59m

$1,986

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Wed 8/7

09:10-23:59

1 stop29h 49m

Lambert-St Louis

Mon 20/7

06:37-07:30

1 stop33h 53m

$2,503

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Mon 10/8

11:55-23:57

3 stops27h 02m

Lambert-St Louis

Fri 4/9

13:36-10:40

3 stops30h 04m

$2,566
Cheapest one-way
Fastest single journey

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Mon 15/6

10:20-18:17

1 stop22h 57m

$890

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Wed 12/8

09:15-23:26

2 stops29h 11m

$890

Flights are sorted by cheapest return flights first.

Deals found on 23/5

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, 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 27 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
1,043 reviews
Check prices

Entertainment

7.2

Food

7.0

Overall

7.5

Comfort

7.5

Crew

8.1

Boarding

7.7

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
1,043 reviews
Qantas Airways
7.5
Good
1,043 reviews
Check prices

Entertainment

7.2

Food

7.0

Overall

7.5

Comfort

7.5

Crew

8.1

Boarding

7.7

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
9,751 reviews
Qantas Airways
7.5
Good
1,043 reviews
Check prices

Entertainment

7.2

Food

7.0

Overall

7.5

Comfort

7.5

Crew

8.1

Boarding

7.7

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
11,639 reviews
Qantas Airways
7.5
Good
1,043 reviews
Check prices

Entertainment

7.2

Food

7.0

Overall

7.5

Comfort

7.5

Crew

8.1

Boarding

7.7

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, Melbourne offers the quickest one-way flight (20 hours 29 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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