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$1,601+ 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 21/10. Fares are subject to change and may not be available on all flights or dates of travel.
— STL
18 Jun — 25 Jun1
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 13 June 2025.

Return from

$1,679

Popular in

August

Cheapest in

November

Average price

$1,859
American Airlines
  • American Airlines
  • 18/8-8/11
  • 3 total stops
  • 69h 31m total
  • Sydney to St. Louis
Search Deals
Highest demand for flights based on searches. 9% potential increase in price ($370 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($141 potential savings vs. average return price).
Search Deals
Average for return flights in June 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 13 June 2025.

Tue 21/1010:20SYD - STL
2 stops44h 58mMultiple Airlines
Tue 11/1116:43STL - SYD
2 stops23h 52mMultiple Airlines
Deal found 12/6$1,601
Mon 18/817:45SYD - STL
2 stops45h 31mAmerican Airlines
Sat 8/1113:55STL - SYD
1 stop24h 00mAmerican Airlines
Deal found 12/6$1,679
Mon 18/809:25SYD - STL
2 stops28h 49mDelta
Sat 8/1112:10STL - SYD
2 stops27h 25mDelta
Deal found 12/6$1,706
Mon 18/810:20SYD - STL
1 stop21h 25mUnited Airlines
Sat 8/1111:10STL - SYD
1 stop26h 50mUnited Airlines
Deal found 11/6$1,733
Tue 21/1010:10SYD - STL
1 stop28h 43mQantas Airways
Tue 11/1106:15STL - SYD
1 stop33h 45mQantas Airways
Deal found 12/6$1,735
Sun 22/608:55SYD - STL
2 stops53h 04mJapan Airlines
Sun 29/608:35STL - SYD
2 stops54h 45mJapan Airlines
Deal found 10/6$2,131
Sat 26/709:20SYD - STL
3 stops50h 30mAir Canada
Sat 2/816:00STL - SYD
2 stops48h 20mAir Canada
Deal found 10/6$2,192

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 13 June 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 18/8

17:45-00:16

2 stops45h 31m

Lambert-St Louis

Sat 8/11

13:55-06:55

1 stop24h 00m

$1,679

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Mon 18/8

09:25-23:14

2 stops28h 49m

Lambert-St Louis

Sat 8/11

12:10-08:35

2 stops27h 25m

$1,706

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Mon 18/8

09:30-16:31

2 stops22h 01m

Lambert-St Louis

Sat 8/11

16:35-07:00

1 stop21h 25m

$1,733

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Fri 18/7

17:45-23:30

1 stop20h 45m

Lambert-St Louis

Thu 31/7

06:14-07:05

1 stop33h 51m

$1,963

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Sat 26/7

13:45-09:52

3 stops35h 07m

Lambert-St Louis

Sat 2/8

19:38-11:45

2 stops25h 07m

$1,968

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Sun 22/6

08:55-22:59

2 stops53h 04m

Lambert-St Louis

Sun 29/6

08:35-06:20

2 stops54h 45m

$2,131

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Sat 26/7

09:20-20:50

3 stops50h 30m

Lambert-St Louis

Sat 2/8

16:00-07:20

2 stops48h 20m

$2,192

Flights are sorted by cheapest return flights first.

Deals found on 12/6

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 1 minute. 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 $918
Qantas Airways
Qantas Airways
From $1,134
Air Canada
Air Canada
From $984
American Airlines
American Airlines
From $1,198

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

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

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 13 June 2025.
Read reviews from past customers who have flown Japan Airlines, Delta and Qantas Airways to St. Louis. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Japan Airlines
8.3
Very Good
1,490 reviews
Check prices

Food

7.7

Entertainment

7.8

Boarding

8.4

Overall

8.3

Comfort

8.2

Crew

8.7

Reviews

1 / 20
4.0
Okay

Anonymous,May 2025

DEL - HND

1. No information on business class lounge access in Delhi airport. 2. Special meals ordered confirmed in JAL website but not in confirmation email. So meal Was not served on the flight.
Japan Airlines
8.3
Very Good
1,490 reviews
Japan Airlines
8.3
Very Good
1,490 reviews
Check prices

Food

7.7

Entertainment

7.8

Boarding

8.4

Overall

8.3

Comfort

8.2

Crew

8.7

Reviews

1 / 20
4.0
Okay

Anonymous,May 2025

DEL - HND

1. No information on business class lounge access in Delhi airport. 2. Special meals ordered confirmed in JAL website but not in confirmation email. So meal Was not served on the flight.
Delta
8.0
Very Good
7,946 reviews
Japan Airlines
8.3
Very Good
1,490 reviews
Check prices

Food

7.7

Entertainment

7.8

Boarding

8.4

Overall

8.3

Comfort

8.2

Crew

8.7

Reviews

1 / 20
4.0
Okay

Anonymous,May 2025

DEL - HND

1. No information on business class lounge access in Delhi airport. 2. Special meals ordered confirmed in JAL website but not in confirmation email. So meal Was not served on the flight.
Qantas Airways
7.5
Good
854 reviews
Japan Airlines
8.3
Very Good
1,490 reviews
Check prices

Food

7.7

Entertainment

7.8

Boarding

8.4

Overall

8.3

Comfort

8.2

Crew

8.7

Reviews

1 / 20
4.0
Okay

Anonymous,May 2025

DEL - HND

1. No information on business class lounge access in Delhi airport. 2. Special meals ordered confirmed in JAL website but not in confirmation email. So meal Was not served on the flight.
United Airlines
7.4
Good
8,790 reviews
Japan Airlines
8.3
Very Good
1,490 reviews
Check prices

Food

7.7

Entertainment

7.8

Boarding

8.4

Overall

8.3

Comfort

8.2

Crew

8.7

Reviews

1 / 20
4.0
Okay

Anonymous,May 2025

DEL - HND

1. No information on business class lounge access in Delhi airport. 2. Special meals ordered confirmed in JAL website but not in confirmation email. So meal Was not served on the flight.
American Airlines
7.2
Good
10,000 reviews
Japan Airlines
8.3
Very Good
1,490 reviews
Check prices

Food

7.7

Entertainment

7.8

Boarding

8.4

Overall

8.3

Comfort

8.2

Crew

8.7

Reviews

1 / 20
4.0
Okay

Anonymous,May 2025

DEL - HND

1. No information on business class lounge access in Delhi airport. 2. Special meals ordered confirmed in JAL website but not in confirmation email. So meal Was not served on the flight.

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, United 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 (20 hours 58 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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