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$878+ 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 27/5. Fares are subject to change and may not be available on all flights or dates of travel.
— STL
15 Jun — 22 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 16 May 2026.

Wed 12/809:30
SYD
-
STL
2 stops22h 36m
United Airlines
Sat 5/916:40
STL
-
SYD
2 stops47h 15m
United Airlines
Deal found 13/5$1,454
Wed 12/817:50
SYD
-
STL
1 stop20h 05m
Qantas Airways
Sat 5/917:11
STL
-
SYD
1 stop22h 44m
Qantas Airways
Deal found 15/5$1,500
Wed 20/509:10
SYD
-
STL
1 stop29h 49m
American Airlines
Thu 28/517:18
STL
-
SYD
2 stops22h 47m
American Airlines
Deal found 12/5$1,502
Wed 12/809:10
SYD
-
STL
1 stop28h 45m
American Airlines
Sat 5/917:11
STL
-
SYD
1 stop22h 44m
American Airlines
Deal found 13/5$1,519
Wed 10/612:00
SYD
-
STL
1 stop19h 33m
Qantas Airways
Wed 17/606:35
STL
-
SYD
1 stop33h 30m
Qantas Airways
Deal found 12/5$1,559

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 16 May 2026.

Return from

$1,454

One-way from

$888

Popular in

July

Cheapest in

September

Average price

$1,606
United Airlines
  • United Airlines
  • 12/8-5/9
  • 4 total stops
  • 69h 51m total
  • Sydney to St. Louis
Search Deals
American Airlines
  • American Airlines
  • 25/5
  • 1 total stop
  • 29h 46m total
  • Sydney to St. Louis
Search Deals
Highest demand for flights based on searches. 10% potential increase in price ($210 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($61 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 16 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
Fastest return journey

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Wed 10/6

09:30-21:10

2 stops26h 40m

Lambert-St Louis

Wed 17/6

13:38-07:00

2 stops26h 22m

$1,454

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Wed 12/8

09:30-16:34

2 stops22h 04m

Lambert-St Louis

Sat 5/9

16:40-07:00

2 stops47h 20m

$1,459

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Wed 3/6

09:20-21:10

2 stops26h 50m

Lambert-St Louis

Sun 7/6

08:40-07:20

2 stops31h 40m

$1,686

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Wed 12/8

09:20-18:42

3 stops48h 22m

Lambert-St Louis

Sat 5/9

12:10-07:20

3 stops52h 10m

$1,771
Cheapest one-way

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Wed 27/5

09:10-23:56

1 stop29h 46m

$878

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Mon 25/5

09:10-20:30

2 stops26h 20m

$888

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Thu 11/6

10:20-18:17

1 stop22h 57m

$890

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Thu 30/7

09:15-08:46

2 stops38h 31m

$890

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Thu 30/7

09:10-20:04

2 stops25h 54m

$897

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Thu 30/7

10:20-18:17

1 stop22h 57m

$903

Flights are sorted by cheapest return flights first.

Deals found on 16/5

Showing 1-10 of 14 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 16 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
1,037 reviews
Check prices

Crew

8.1

Boarding

7.7

Comfort

7.4

Overall

7.5

Food

7.0

Entertainment

7.2

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
1,037 reviews
Qantas Airways
7.5
Good
1,037 reviews
Check prices

Crew

8.1

Boarding

7.7

Comfort

7.4

Overall

7.5

Food

7.0

Entertainment

7.2

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
9,729 reviews
Qantas Airways
7.5
Good
1,037 reviews
Check prices

Crew

8.1

Boarding

7.7

Comfort

7.4

Overall

7.5

Food

7.0

Entertainment

7.2

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
11,662 reviews
Qantas Airways
7.5
Good
1,037 reviews
Check prices

Crew

8.1

Boarding

7.7

Comfort

7.4

Overall

7.5

Food

7.0

Entertainment

7.2

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 5 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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