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$1,720+ 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 12/5. Fares are subject to change and may not be available on all flights or dates of travel.
— STL
26 Feb — 5 Mar1
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 21 February 2025.

Return from

$1,720

Popular in

August

Cheapest in

March

Average price

$1,980
United Airlines
  • United Airlines
  • 12/5-31/5
  • 4 total stops
  • 97h 50m total
  • Sydney to St. Louis
Search Deals
Highest demand for flights based on searches. 9% potential increase in price ($361 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($149 potential savings vs. average return price).
Search Deals
Average for return flights in February 2025
Search Deals

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 21 February 2025.

Mon 12/509:30SYD - STL
2 stops42h 15mUnited Airlines
Sat 31/508:25STL - SYD
2 stops55h 35mUnited Airlines
Deal found 20/2$1,720
Mon 12/509:20SYD - STL
2 stops42h 16mAir Canada
Sat 31/513:30STL - SYD
2 stops50h 50mAir Canada
Deal found 20/2$1,739
Tue 1/410:10SYD - STL
1 stop28h 59mAmerican Airlines
Mon 30/606:29STL - SYD
1 stop33h 36mAmerican Airlines
Deal found 20/2$2,518
Fri 11/409:10SYD - STL
1 stop29h 06mQantas Airways
Sun 27/406:15STL - SYD
1 stop33h 50mQantas Airways
Deal found 21/2$2,562
Mon 18/809:55SYD - STL
3 stops28h 44mMultiple Airlines
Sat 8/1113:30STL - SYD
3 stops26h 15mMultiple Airlines
Deal found 20/2$3,186
Tue 1/421:55SYD - STL
3 stops56h 47mTurkish Airlines
Mon 30/608:10STL - SYD
3 stops43h 50mTurkish Airlines
Deal found 20/2$4,007

Find flights to St. Louis within your budget

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 21 February 2025.

Fly from

Sydney

Route

Depart

Return

Price

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Mon 12/5

09:30-12:45

2 stops42h 15m

Lambert-St Louis

Sat 31/5

08:25-07:00

2 stops55h 35m

$1,720

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Mon 12/5

09:20-12:36

2 stops42h 16m

Lambert-St Louis

Sat 31/5

13:30-07:20

2 stops50h 50m

$1,739

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Tue 1/4

10:10-23:09

1 stop28h 59m

Lambert-St Louis

Mon 30/6

06:29-07:05

1 stop33h 36m

$2,518

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Fri 11/4

09:10-23:16

1 stop29h 06m

Lambert-St Louis

Sun 27/4

06:15-07:05

1 stop33h 50m

$2,562

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Mon 18/8

09:55-23:39

3 stops28h 44m

Lambert-St Louis

Sat 8/11

13:30-08:45

3 stops26h 15m

$3,186

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Tue 1/4

21:55-14:42

3 stops56h 47m

Lambert-St Louis

Mon 30/6

08:10-19:00

3 stops43h 50m

$4,007

Flights are sorted by cheapest return flights first.

Deals found on 20/2

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.

Travel insights for flights to St. Louis

Get recent, data-driven insights about flights to St. Louis including ideal travel times, pricing trends, and more.

How long is the flight to St. Louis?

On average, a flight from Sydney to St. Louis takes 21 hours 16 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 $957

Qantas Airways

Qantas Airways

From $1,127

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 United Airlines, American 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 21 February 2025.
Qantas Airways
7.4
Good
813 reviews
Check prices

Boarding

7.6

Crew

8.1

Food

6.9

Overall

7.4

Comfort

7.4

Entertainment

7.1

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
813 reviews
Qantas Airways
7.4
Good
813 reviews
Check prices

Boarding

7.6

Crew

8.1

Food

6.9

Overall

7.4

Comfort

7.4

Entertainment

7.1

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
8,761 reviews
Qantas Airways
7.4
Good
813 reviews
Check prices

Boarding

7.6

Crew

8.1

Food

6.9

Overall

7.4

Comfort

7.4

Entertainment

7.1

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.

Turkish Airlines
7.3
Good
3,834 reviews
Qantas Airways
7.4
Good
813 reviews
Check prices

Boarding

7.6

Crew

8.1

Food

6.9

Overall

7.4

Comfort

7.4

Entertainment

7.1

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
813 reviews
Check prices

Boarding

7.6

Crew

8.1

Food

6.9

Overall

7.4

Comfort

7.4

Entertainment

7.1

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
8,756 reviews
Qantas Airways
7.4
Good
813 reviews
Check prices

Boarding

7.6

Crew

8.1

Food

6.9

Overall

7.4

Comfort

7.4

Entertainment

7.1

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.

  • 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, Brisbane offers the quickest one-way flight (21 hours 7 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).

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