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$1,586+ Cheap flights to St. Louis

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 5/5. Fares are subject to change and may not be available on all flights or dates of travel.
— STL
27 Mar — 3 Apr1
1 adult

Flights to St. Louis in 2025

Find the latest flights to St. Louis in 2025, 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 March 2025.

Return from

$1,586

One-way from

$3,994

Popular in

August

Cheapest in

March

Average price

$1,831
American Airlines
  • American Airlines
  • 5/5-12/5
  • 2 total stops
  • 53h 14m total
  • Sydney to St. Louis
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25/4
  • 25/4
  • 2 total stops
  • 42h 58m total
  • Sydney to St. Louis
Search Deals
Highest demand for flights based on searches. 7% potential increase in price ($306 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($146 potential savings vs. average return price).
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Average for return flights in March 2025
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Find flight deals to St. Louis

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 March 2025.

Mon 5/510:25SYD - STL
1 stop20h 01mAmerican Airlines
Mon 12/506:52STL - SYD
1 stop33h 13mAmerican Airlines
Deal found 21/3$1,586
Tue 6/509:20SYD - STL
2 stops49h 23mAir Canada
Tue 13/505:20STL - SYD
2 stops35h 00mAir Canada
Deal found 21/3$1,637
Mon 5/510:25SYD - STL
2 stops28h 34mMultiple Airlines
Mon 12/506:52STL - SYD
1 stop33h 13mMultiple Airlines
Deal found 21/3$1,693
Tue 6/510:25SYD - STL
1 stop20h 01mQantas Airways
Tue 13/519:19STL - SYD
1 stop20h 36mQantas Airways
Deal found 21/3$1,715
Mon 12/510:20SYD - STL
1 stop27h 25mUnited Airlines
Sat 31/516:32STL - SYD
2 stops47h 28mUnited Airlines
Deal found 21/3$1,736

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 March 2025.
Use the filters below to find and compare flights to St. Louis that are best for you.

Fly from

Sydney

Route

Depart

Return

Price

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Mon 5/5

10:25-15:26

1 stop20h 01m

Lambert-St Louis

Mon 12/5

06:52-07:05

1 stop33h 13m

$1,586

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Tue 6/5

09:20-19:43

2 stops49h 23m

Lambert-St Louis

Tue 13/5

05:20-07:20

2 stops35h 00m

$1,637

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Mon 5/5

10:25-23:59

2 stops28h 34m

Lambert-St Louis

Mon 12/5

06:52-07:05

1 stop33h 13m

$1,693

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Mon 12/5

10:20-22:45

1 stop27h 25m

Lambert-St Louis

Sat 31/5

16:32-07:00

2 stops47h 28m

$1,736

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Mon 12/5

17:45-23:04

1 stop20h 19m

Lambert-St Louis

Sat 31/5

19:19-06:55

1 stop20h 36m

$1,800

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Fri 25/4

10:10-14:08

2 stops42h 58m

$3,994

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Fri 25/4

10:20-16:52

1 stop21h 32m

$10,617

Flights are sorted by cheapest return flights first.

Deals found on 21/3

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

How long is the flight to St. Louis?

On average, a flight from Sydney to St. Louis takes 28 hours 34 minutes. Flights to St. Louis from other popular cities in Australia will vary in length. Below are a few examples of popular routes and their flight times.

What are the most popular airlines that fly to St. Louis?

The most popular airlines flying from Sydney to St. Louis are United Airlines, Qantas Airways and Air Canada.

United Airlines

United Airlines

From $968

Qantas Airways

Qantas Airways

From $1,134

Air Canada

Air Canada

From $984

American Airlines

American Airlines

From $965

What are the cheapest airlines that fly to St. Louis?

The cheapest airlines flying from Sydney to St. Louis are American Airlines, United Airlines and Air Canada.

Rainfall in St. Louis by month

Plan your trip to St. Louis by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in St. Louis ranges from 56.0 - 119.0 mm per month. May is typically the wettest month, when rainfall can reach 119.0 mm. February is typically the driest time to visit St. Louis when rainfall is around 56.0 mm.

Temperature in St. Louis by month

Plan your trip to St. Louis by taking into account the average temperature totals by month.

If weather is an important factor for your trip to St. Louis, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 27.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 0.0 C).

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 March 2025.
Qantas Airways
7.4
Good
812 reviews
Check prices

Crew

8.1

Food

6.9

Entertainment

7.1

Comfort

7.4

Overall

7.4

Boarding

7.6

Reviews

1 / 20
6.0
Good

Anonymous,Feb 2025

SYD - DFW

They need to improve the check-in kiosks and the in-flight special meals. Never had a smooth boarding process with Qantas. The special meals look like they're prepared at the last minute without much thought.
Qantas Airways
7.4
Good
812 reviews
Qantas Airways
7.4
Good
812 reviews
Check prices

Crew

8.1

Food

6.9

Entertainment

7.1

Comfort

7.4

Overall

7.4

Boarding

7.6

Reviews

1 / 20
6.0
Good

Anonymous,Feb 2025

SYD - DFW

They need to improve the check-in kiosks and the in-flight special meals. Never had a smooth boarding process with Qantas. The special meals look like they're prepared at the last minute without much thought.
United Airlines
7.4
Good
8,605 reviews
Qantas Airways
7.4
Good
812 reviews
Check prices

Crew

8.1

Food

6.9

Entertainment

7.1

Comfort

7.4

Overall

7.4

Boarding

7.6

Reviews

1 / 20
6.0
Good

Anonymous,Feb 2025

SYD - DFW

They need to improve the check-in kiosks and the in-flight special meals. Never had a smooth boarding process with Qantas. The special meals look like they're prepared at the last minute without much thought.
American Airlines
7.2
Good
10,000 reviews
Qantas Airways
7.4
Good
812 reviews
Check prices

Crew

8.1

Food

6.9

Entertainment

7.1

Comfort

7.4

Overall

7.4

Boarding

7.6

Reviews

1 / 20
6.0
Good

Anonymous,Feb 2025

SYD - DFW

They need to improve the check-in kiosks and the in-flight special meals. Never had a smooth boarding process with Qantas. The special meals look like they're prepared at the last minute without much thought.
Air Canada
7.0
Good
8,914 reviews
Qantas Airways
7.4
Good
812 reviews
Check prices

Crew

8.1

Food

6.9

Entertainment

7.1

Comfort

7.4

Overall

7.4

Boarding

7.6

Reviews

1 / 20
6.0
Good

Anonymous,Feb 2025

SYD - DFW

They need to improve the check-in kiosks and the in-flight special meals. Never had a smooth boarding process with Qantas. The special meals look like they're prepared at the last minute without much thought.

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, American Airlines 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 (23 hours 41 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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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.

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