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$1,620+ 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 15/8. Fares are subject to change and may not be available on all flights or dates of travel.
— STL
9 Jul — 16 Jul1
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 4 July 2025.

Return from

$1,620

Popular in

August

Cheapest in

November

Average price

$1,993
Air New Zealand
  • Air New Zealand
  • 15/8-22/8
  • 4 total stops
  • 62h 01m total
  • Sydney to St. Louis
Search Deals
Highest demand for flights based on searches. 9% potential increase in price ($353 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($137 potential savings vs. average return price).
Search Deals
Average for return flights in July 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 4 July 2025.

Fri 15/808:45SYD - STL
2 stops28h 36mAir New Zealand
Fri 22/808:20STL - SYD
2 stops33h 25mAir New Zealand
Deal found 3/7$1,620
Fri 15/812:10SYD - STL
1 stop19h 39mAmerican Airlines
Fri 22/806:45STL - SYD
1 stop33h 20mAmerican Airlines
Deal found 3/7$1,651
Mon 18/809:20SYD - STL
2 stops45h 01mMultiple Airlines
Sat 8/1116:43STL - SYD
2 stops23h 52mMultiple Airlines
Deal found 3/7$1,683
Mon 18/810:20SYD - STL
2 stops26h 30mUnited Airlines
Sat 8/1116:35STL - SYD
1 stop21h 25mUnited Airlines
Deal found 3/7$1,731
Fri 15/809:20SYD - STL
2 stops49h 25mAir Canada
Fri 22/813:30STL - SYD
3 stops50h 50mAir Canada
Deal found 3/7$1,817
Sat 16/809:10SYD - STL
1 stop28h 59mQantas Airways
Sat 23/806:45STL - SYD
1 stop33h 20mQantas Airways
Deal found 2/7$1,935
Wed 30/709:25SYD - STL
2 stops29h 28mDelta
Wed 6/813:29STL - SYD
2 stops26h 06mDelta
Deal found 2/7$2,142
Wed 30/720:55SYD - STL
3 stops64h 50mTurkish Airlines
Wed 6/808:00STL - SYD
3 stops44h 00mTurkish Airlines
Deal found 2/7$3,649
Thu 3/721:40SYD - STL
2 stops31h 46mAlaska Airlines
Thu 10/719:32STL - SYD
2 stops33h 13mAlaska Airlines
Deal found 2/7$3,725
Mon 18/811:50SYD - STL
3 stops37h 07mLATAM Airlines
Sat 8/1115:30STL - SYD
2 stops45h 45mLATAM Airlines
Deal found 2/7$4,621
Wed 30/708:55SYD - STL
2 stops48h 40mJapan Airlines
Wed 6/816:19STL - SYD
2 stops47h 01mJapan Airlines
Deal found 2/7$7,684

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 4 July 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

Fri 15/8

08:45-22:21

2 stops28h 36m

Lambert-St Louis

Fri 22/8

08:20-08:45

2 stops33h 25m

$1,620

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Fri 15/8

12:10-16:49

1 stop19h 39m

Lambert-St Louis

Fri 22/8

06:45-07:05

1 stop33h 20m

$1,651

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Mon 18/8

09:20-15:21

2 stops45h 01m

Lambert-St Louis

Sat 8/11

16:43-09:35

2 stops23h 52m

$1,683

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Mon 18/8

10:20-21:50

2 stops26h 30m

Lambert-St Louis

Sat 8/11

16:35-07:00

1 stop21h 25m

$1,731

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Fri 15/8

09:20-19:45

2 stops49h 25m

Lambert-St Louis

Fri 22/8

13:30-07:20

3 stops50h 50m

$1,817

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Sat 16/8

09:10-23:09

1 stop28h 59m

Lambert-St Louis

Sat 23/8

06:45-07:05

1 stop33h 20m

$1,935

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Wed 30/7

09:25-23:53

2 stops29h 28m

Lambert-St Louis

Wed 6/8

13:29-06:35

2 stops26h 06m

$2,142

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Wed 30/7

20:55-22:45

3 stops64h 50m

Lambert-St Louis

Wed 6/8

08:00-19:00

3 stops44h 00m

$3,649

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Mon 18/8

11:50-09:57

3 stops37h 07m

Lambert-St Louis

Sat 8/11

15:30-06:15

2 stops45h 45m

$4,621

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Wed 30/7

08:55-18:35

2 stops48h 40m

Lambert-St Louis

Wed 6/8

16:19-06:20

2 stops47h 01m

$7,684

Flights are sorted by cheapest return flights first.

Deals found on 3/7

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 21 hours 13 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 $889
Qantas Airways
Qantas Airways
From $1,093
Air Canada
Air Canada
From $946
Air New Zealand
Air New Zealand
From $976

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 4 July 2025.
Get a feel of what it's like to fly with Japan Airlines, Delta, andAir New Zealand 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.
Japan Airlines
8.3
Very Good
1,505 reviews
Check prices

Overall

8.3

Crew

8.7

Entertainment

7.8

Boarding

8.4

Food

7.7

Comfort

8.2

Reviews

1 / 20
2.0
Mediocre

Roger,June 2025

ORD - PIT

My bag was at O’Hare airport for five hours waiting on my next flight because it was delayed for 2 1/2 hours and they couldn’t put it on the right goddamn airplane. I am home in Pennsylvania without my bag and all my stuff.
Japan Airlines
8.3
Very Good
1,505 reviews
Japan Airlines
8.3
Very Good
1,505 reviews
Check prices

Overall

8.3

Crew

8.7

Entertainment

7.8

Boarding

8.4

Food

7.7

Comfort

8.2

Reviews

1 / 20
2.0
Mediocre

Roger,June 2025

ORD - PIT

My bag was at O’Hare airport for five hours waiting on my next flight because it was delayed for 2 1/2 hours and they couldn’t put it on the right goddamn airplane. I am home in Pennsylvania without my bag and all my stuff.
Delta
8.0
Very Good
7,982 reviews
Japan Airlines
8.3
Very Good
1,505 reviews
Check prices

Overall

8.3

Crew

8.7

Entertainment

7.8

Boarding

8.4

Food

7.7

Comfort

8.2

Reviews

1 / 20
2.0
Mediocre

Roger,June 2025

ORD - PIT

My bag was at O’Hare airport for five hours waiting on my next flight because it was delayed for 2 1/2 hours and they couldn’t put it on the right goddamn airplane. I am home in Pennsylvania without my bag and all my stuff.
Air New Zealand
8.0
Very Good
484 reviews
Japan Airlines
8.3
Very Good
1,505 reviews
Check prices

Overall

8.3

Crew

8.7

Entertainment

7.8

Boarding

8.4

Food

7.7

Comfort

8.2

Reviews

1 / 20
2.0
Mediocre

Roger,June 2025

ORD - PIT

My bag was at O’Hare airport for five hours waiting on my next flight because it was delayed for 2 1/2 hours and they couldn’t put it on the right goddamn airplane. I am home in Pennsylvania without my bag and all my stuff.
Qantas Airways
7.5
Good
868 reviews
Japan Airlines
8.3
Very Good
1,505 reviews
Check prices

Overall

8.3

Crew

8.7

Entertainment

7.8

Boarding

8.4

Food

7.7

Comfort

8.2

Reviews

1 / 20
2.0
Mediocre

Roger,June 2025

ORD - PIT

My bag was at O’Hare airport for five hours waiting on my next flight because it was delayed for 2 1/2 hours and they couldn’t put it on the right goddamn airplane. I am home in Pennsylvania without my bag and all my stuff.
LATAM Airlines
7.5
Good
1,805 reviews
Japan Airlines
8.3
Very Good
1,505 reviews
Check prices

Overall

8.3

Crew

8.7

Entertainment

7.8

Boarding

8.4

Food

7.7

Comfort

8.2

Reviews

1 / 20
2.0
Mediocre

Roger,June 2025

ORD - PIT

My bag was at O’Hare airport for five hours waiting on my next flight because it was delayed for 2 1/2 hours and they couldn’t put it on the right goddamn airplane. I am home in Pennsylvania without my bag and all my stuff.

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, Sydney Kingsford Smith offers the quickest one-way flight (21 hours 13 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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