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$1,994+ 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 1/10. Fares are subject to change and may not be available on all flights or dates of travel.
— STL
15 Apr — 22 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 10 April 2025.

Return from

$1,994

Popular in

August

Cheapest in

March

Average price

$2,312
Air Canada
  • Air Canada
  • 1/10-31/10
  • 4 total stops
  • 49h 42m total
  • Sydney to St. Louis
Search Deals
Highest demand for flights based on searches. 8% potential increase in price ($346 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($150 potential savings vs. average return price).
Search Deals
Average for return flights in April 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 10 April 2025.

Wed 1/1009:20SYD - STL
2 stops25h 37mAir Canada
Fri 31/1016:30STL - SYD
2 stops24h 05mAir Canada
Deal found 10/4$1,994
Mon 18/810:20SYD - STL
1 stop21h 25mUnited Airlines
Sat 8/1115:15STL - SYD
2 stops46h 45mUnited Airlines
Deal found 9/4$2,042
Mon 21/709:25SYD - STL
2 stops26h 22mDelta
Mon 22/1207:10STL - SYD
2 stops54h 40mDelta
Deal found 9/4$2,057
Wed 1/1009:20SYD - STL
3 stops49h 37mMultiple Airlines
Fri 31/1016:30STL - SYD
2 stops24h 05mMultiple Airlines
Deal found 10/4$2,067
Mon 21/709:10SYD - STL
1 stop29h 10mQantas Airways
Mon 22/1206:30STL - SYD
1 stop33h 30mQantas Airways
Deal found 9/4$2,165
Sat 24/508:55SYD - STL
2 stops29h 09mJapan Airlines
Sat 31/506:52STL - SYD
2 stops32h 28mJapan Airlines
Deal found 8/4$2,419
Sat 19/709:10SYD - STL
1 stop29h 10mAmerican Airlines
Sat 20/1206:30STL - SYD
1 stop31h 55mAmerican Airlines
Deal found 9/4$2,748
Wed 2/711:50SYD - STL
3 stops36h 25mLATAM Airlines
Sun 13/717:40STL - SYD
3 stops48h 55mLATAM Airlines
Deal found 10/4$4,637

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 10 April 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

Wed 1/10

09:20-19:57

2 stops25h 37m

Lambert-St Louis

Fri 31/10

16:30-08:35

2 stops24h 05m

$1,994

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Mon 18/8

10:20-16:45

1 stop21h 25m

Lambert-St Louis

Sat 8/11

15:15-07:00

2 stops46h 45m

$2,042

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Mon 21/7

09:25-20:47

2 stops26h 22m

Lambert-St Louis

Mon 22/12

07:10-06:50

2 stops54h 40m

$2,057

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Wed 1/10

09:20-19:57

3 stops49h 37m

Lambert-St Louis

Fri 31/10

16:30-08:35

2 stops24h 05m

$2,067

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Mon 21/7

09:10-23:20

1 stop29h 10m

Lambert-St Louis

Mon 22/12

06:30-09:00

1 stop33h 30m

$2,165

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Sat 24/5

08:55-23:04

2 stops29h 09m

Lambert-St Louis

Sat 31/5

06:52-06:20

2 stops32h 28m

$2,419

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Sat 19/7

09:10-23:20

1 stop29h 10m

Lambert-St Louis

Sat 20/12

06:30-07:25

1 stop31h 55m

$2,748

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Wed 2/7

11:50-09:15

3 stops36h 25m

Lambert-St Louis

Sun 13/7

17:40-09:35

3 stops48h 55m

$4,637

Flights are sorted by cheapest return flights first.

Deals found on 10/4

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 22 hours 47 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 $1,102

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 10 April 2025.
Japan Airlines
8.3
Very Good
1,440 reviews
Check prices

Food

7.7

Overall

8.3

Comfort

8.2

Boarding

8.4

Crew

8.7

Entertainment

7.8

Reviews

1 / 20
10.0
Excellent

L,Nov 2024

SNA - SEA

Excellent crew, great food and decent audio selection. Seats are wide and have plenty of leg room but could use some more padding.
Japan Airlines
8.3
Very Good
1,440 reviews
Japan Airlines
8.3
Very Good
1,440 reviews
Check prices

Food

7.7

Overall

8.3

Comfort

8.2

Boarding

8.4

Crew

8.7

Entertainment

7.8

Reviews

1 / 20
10.0
Excellent

L,Nov 2024

SNA - SEA

Excellent crew, great food and decent audio selection. Seats are wide and have plenty of leg room but could use some more padding.
Delta
8.0
Very Good
7,910 reviews
Japan Airlines
8.3
Very Good
1,440 reviews
Check prices

Food

7.7

Overall

8.3

Comfort

8.2

Boarding

8.4

Crew

8.7

Entertainment

7.8

Reviews

1 / 20
10.0
Excellent

L,Nov 2024

SNA - SEA

Excellent crew, great food and decent audio selection. Seats are wide and have plenty of leg room but could use some more padding.
Qantas Airways
7.5
Good
818 reviews
Japan Airlines
8.3
Very Good
1,440 reviews
Check prices

Food

7.7

Overall

8.3

Comfort

8.2

Boarding

8.4

Crew

8.7

Entertainment

7.8

Reviews

1 / 20
10.0
Excellent

L,Nov 2024

SNA - SEA

Excellent crew, great food and decent audio selection. Seats are wide and have plenty of leg room but could use some more padding.
LATAM Airlines
7.5
Good
1,757 reviews
Japan Airlines
8.3
Very Good
1,440 reviews
Check prices

Food

7.7

Overall

8.3

Comfort

8.2

Boarding

8.4

Crew

8.7

Entertainment

7.8

Reviews

1 / 20
10.0
Excellent

L,Nov 2024

SNA - SEA

Excellent crew, great food and decent audio selection. Seats are wide and have plenty of leg room but could use some more padding.
United Airlines
7.4
Good
8,636 reviews
Japan Airlines
8.3
Very Good
1,440 reviews
Check prices

Food

7.7

Overall

8.3

Comfort

8.2

Boarding

8.4

Crew

8.7

Entertainment

7.8

Reviews

1 / 20
10.0
Excellent

L,Nov 2024

SNA - SEA

Excellent crew, great food and decent audio selection. Seats are wide and have plenty of leg room but could use some more padding.

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, Brisbane offers the quickest one-way flight (21 hours 22 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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