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$281+ Cheap flights from St. Louis

This is the cheapest return flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 3/4. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
STL — SYD
19 Mar — 26 Mar1
1 adult

What to know about flights from St. Louis

Discover essential information about flights departing from St. Louis, including flight schedules, destinations, airlines operating at the St. Louis airport, and any specific guidelines or requirements for travellers. Please note that the information is based on the most recent updates available. Data last updated 14 March 2025.

Good one-way deal

$424 or less
Price to beat on a one-way flight from Lambert-St Louis.
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Find flights from St. Louis

Cheapest flights from St. Louis
Explore the most affordable flight options available from St. Louis. Find the lowest fares based on data from user searches, with prices last updated on 14 March 2025.

Fri 28/317:33STL - BNE
2 stops45h 57mUnited Airlines
Mon 14/410:30BNE - STL
2 stops44h 17mUnited Airlines
Deal found 14/3$1,666
Tue 24/619:46STL - SYD
2 stops24h 59mFiji Airways
Thu 24/713:15SYD - STL
2 stops22h 44mFiji Airways
Deal found 13/3$1,823
Wed 28/513:30STL - SYD
3 stops50h 50mAir Canada
Mon 16/609:20SYD - STL
2 stops25h 38mAir Canada
Deal found 13/3$1,982
Sat 9/813:30STL - SYD
3 stops50h 50mMultiple Airlines
Sat 23/809:20SYD - STL
2 stops24h 38mMultiple Airlines
Deal found 13/3$2,006
Wed 28/513:38STL - SYD
2 stops26h 27mAmerican Airlines
Mon 16/609:10SYD - STL
1 stop28h 49mAmerican Airlines
Deal found 13/3$2,295
Sun 22/619:10STL - SYD
1 stop20h 45mUnited Airlines
Sun 27/710:20SYD - STL
1 stop21h 20mUnited Airlines
Deal found 13/3$2,313
Tue 1/417:37STL - MEL
2 stops27h 18mFiji Airways
Fri 11/423:35MEL - STL
2 stops37h 53mFiji Airways
Deal found 13/3$2,314
Tue 24/617:29STL - SYD
1 stop22h 26mQantas Airways
Wed 23/709:10SYD - STL
1 stop28h 49mQantas Airways
Deal found 13/3$2,343
Tue 15/717:27STL - MEL
2 stops47h 03mUnited Airlines
Tue 29/710:55MEL - STL
1 stop20h 45mUnited Airlines
Deal found 12/3$2,459
Thu 5/607:30STL - HBA
3 stops44h 20mMultiple Airlines
Wed 11/609:10HBA - STL
3 stops49h 33mMultiple Airlines
Deal found 13/3$2,486
Thu 5/606:30STL - HBA
2 stops43h 40mQantas Airways
Wed 11/617:50HBA - STL
2 stops44h 09mQantas Airways
Deal found 13/3$2,729
Sun 8/616:32STL - HBA
3 stops28h 38mUnited Airlines
Sat 21/606:25HBA - STL
3 stops31h 20mUnited Airlines
Deal found 13/3$2,807

Find flights from St. Louis within your budget

Find flights departing from St. Louis that match your specified budget. Filter results by price range, allowing you to narrow down options and find flights that fit within your financial constraints. Please note that the search results are based on data from user searches, with fares last updated on 14 March 2025. In the last 7 days, Cheapflights users made a total of 647,157 searches

Fly to

Sydney

Route

Depart

Return

Price

St. LouisBrisbane

STL - BNE

STLBNE

Lambert-St Louis

Fri 28/3

17:33-06:30

2 stops45h 57m

Brisbane

Mon 14/4

10:30-15:47

2 stops44h 17m

$1,666

St. LouisSydney

STL - SYD

STLSYD

Lambert-St Louis

Tue 24/6

19:46-11:45

2 stops24h 59m

Sydney Kingsford Smith

Thu 24/7

13:15-20:59

2 stops22h 44m

$1,823

St. LouisSydney

STL - SYD

STLSYD

Lambert-St Louis

Wed 28/5

13:30-07:20

3 stops50h 50m

Sydney Kingsford Smith

Mon 16/6

09:20-19:58

2 stops25h 38m

$1,982

St. LouisSydney

STL - SYD

STLSYD

Lambert-St Louis

Sat 9/8

13:30-07:20

3 stops50h 50m

Sydney Kingsford Smith

Sat 23/8

09:20-18:58

2 stops24h 38m

$2,006

St. LouisSydney

STL - SYD

STLSYD

Lambert-St Louis

Wed 28/5

13:38-07:05

2 stops26h 27m

Sydney Kingsford Smith

Mon 16/6

09:10-22:59

1 stop28h 49m

$2,295

St. LouisSydney

STL - SYD

STLSYD

Lambert-St Louis

Sun 22/6

19:10-06:55

1 stop20h 45m

Sydney Kingsford Smith

Sun 27/7

10:20-16:40

1 stop21h 20m

$2,313

St. LouisMelbourne

STL - MEL

STLMEL

Lambert-St Louis

Tue 1/4

17:37-12:55

2 stops27h 18m

Melbourne

Fri 11/4

23:35-22:28

2 stops37h 53m

$2,314

St. LouisSydney

STL - SYD

STLSYD

Lambert-St Louis

Tue 24/6

17:29-06:55

1 stop22h 26m

Sydney Kingsford Smith

Wed 23/7

09:10-22:59

1 stop28h 49m

$2,343

St. LouisMelbourne

STL - MEL

STLMEL

Lambert-St Louis

Tue 15/7

17:27-07:30

2 stops47h 03m

Melbourne

Tue 29/7

10:55-16:40

1 stop20h 45m

$2,459

St. LouisHobart

STL - HBA

STLHBA

Lambert-St Louis

Thu 5/6

07:30-18:50

3 stops44h 20m

Hobart

Wed 11/6

09:10-19:43

3 stops49h 33m

$2,486

Flights are sorted by cheapest return flights first.

Deals found on 12/3

Showing 1-10 of 29 results
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Best time to book a flight from St. Louis

Have a flexible travel schedule? Discover the best time to fly from 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 from St. Louis

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

When is the best time to book a flight from St. Louis?

Use this chart to determine the optimal time to book a return flight from St. Louis to Sydney. Price data was last updated on 7 March 2025.

The best time to book flights from St. Louis is 19 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

What is the cheapest month to book a flight from St. Louis?

Currently, May is the cheapest month in which you can book a flight from St. Louis (average of $756). Flying from St. Louis in December will prove the most costly (average of $2,135). There are multiple factors that influence the price of a flight so comparing airlines, departure airports and times can help keep costs down.

What are popular destinations to fly to from St. Louis?

St. Louis offers frequent flights to Chicago (751 flights per day), Detroit (230 flights per day) and New York (211 flights per day).

Dallas/Fort Worth

Dallas/Fort Worth

From $596

Denver Intl

Denver Intl

From $267

What is the cheapest place to fly to from St. Louis?

The cheapest city to fly to from St. Louis is Denver Intl, with prices starting at $424. Explore other affordable destinations below.

Denver Intl

Denver Intl

From $267

Dallas/Fort Worth

Dallas/Fort Worth

From $596

Airline reviews for flights from St. Louis

Get insights into the airlines that provide service from 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 airline for your flight from St. Louis. In the last 7 days, Cheapflights users made a total of 647,157 searches.
Fiji Airways
8.0
Very Good
182 reviews
Check prices

Entertainment

7.5

Crew

8.5

Food

7.5

Overall

8.0

Comfort

8.0

Boarding

8.2

Reviews

1 / 15

6.0
Good

Anonymous,Dec 2024

NAN - LAX

Asked for water before dinner was served, didn’t get it. Dinner served but no drinks was asked or served with dinner. When asked if I wanted my seat made for bedtime, asked for water again. This time I got it. Filled the breakfast form but was still asked what I wanted. Comparing this experience with Fiji air flight from LA to Melbourne. Worse was missing my flight connection to Baltimore since Fiji air opted to wait for a passenger that couldn’t pass security. Instead of leaving at 9:40 pm, we left at 11. So spent overnight at a hotel for next day’s flight. Another expense!

Fiji Airways
8.0
Very Good
182 reviews
Fiji Airways
8.0
Very Good
182 reviews
Check prices

Entertainment

7.5

Crew

8.5

Food

7.5

Overall

8.0

Comfort

8.0

Boarding

8.2

Reviews

1 / 15

6.0
Good

Anonymous,Dec 2024

NAN - LAX

Asked for water before dinner was served, didn’t get it. Dinner served but no drinks was asked or served with dinner. When asked if I wanted my seat made for bedtime, asked for water again. This time I got it. Filled the breakfast form but was still asked what I wanted. Comparing this experience with Fiji air flight from LA to Melbourne. Worse was missing my flight connection to Baltimore since Fiji air opted to wait for a passenger that couldn’t pass security. Instead of leaving at 9:40 pm, we left at 11. So spent overnight at a hotel for next day’s flight. Another expense!

Air New Zealand
7.9
Good
452 reviews
Fiji Airways
8.0
Very Good
182 reviews
Check prices

Entertainment

7.5

Crew

8.5

Food

7.5

Overall

8.0

Comfort

8.0

Boarding

8.2

Reviews

1 / 15

6.0
Good

Anonymous,Dec 2024

NAN - LAX

Asked for water before dinner was served, didn’t get it. Dinner served but no drinks was asked or served with dinner. When asked if I wanted my seat made for bedtime, asked for water again. This time I got it. Filled the breakfast form but was still asked what I wanted. Comparing this experience with Fiji air flight from LA to Melbourne. Worse was missing my flight connection to Baltimore since Fiji air opted to wait for a passenger that couldn’t pass security. Instead of leaving at 9:40 pm, we left at 11. So spent overnight at a hotel for next day’s flight. Another expense!

Cathay Pacific
7.5
Good
830 reviews
Fiji Airways
8.0
Very Good
182 reviews
Check prices

Entertainment

7.5

Crew

8.5

Food

7.5

Overall

8.0

Comfort

8.0

Boarding

8.2

Reviews

1 / 15

6.0
Good

Anonymous,Dec 2024

NAN - LAX

Asked for water before dinner was served, didn’t get it. Dinner served but no drinks was asked or served with dinner. When asked if I wanted my seat made for bedtime, asked for water again. This time I got it. Filled the breakfast form but was still asked what I wanted. Comparing this experience with Fiji air flight from LA to Melbourne. Worse was missing my flight connection to Baltimore since Fiji air opted to wait for a passenger that couldn’t pass security. Instead of leaving at 9:40 pm, we left at 11. So spent overnight at a hotel for next day’s flight. Another expense!

Qantas Airways
7.4
Good
814 reviews
Fiji Airways
8.0
Very Good
182 reviews
Check prices

Entertainment

7.5

Crew

8.5

Food

7.5

Overall

8.0

Comfort

8.0

Boarding

8.2

Reviews

1 / 15

6.0
Good

Anonymous,Dec 2024

NAN - LAX

Asked for water before dinner was served, didn’t get it. Dinner served but no drinks was asked or served with dinner. When asked if I wanted my seat made for bedtime, asked for water again. This time I got it. Filled the breakfast form but was still asked what I wanted. Comparing this experience with Fiji air flight from LA to Melbourne. Worse was missing my flight connection to Baltimore since Fiji air opted to wait for a passenger that couldn’t pass security. Instead of leaving at 9:40 pm, we left at 11. So spent overnight at a hotel for next day’s flight. Another expense!

United Airlines
7.4
Good
8,623 reviews
Fiji Airways
8.0
Very Good
182 reviews
Check prices

Entertainment

7.5

Crew

8.5

Food

7.5

Overall

8.0

Comfort

8.0

Boarding

8.2

Reviews

1 / 15

6.0
Good

Anonymous,Dec 2024

NAN - LAX

Asked for water before dinner was served, didn’t get it. Dinner served but no drinks was asked or served with dinner. When asked if I wanted my seat made for bedtime, asked for water again. This time I got it. Filled the breakfast form but was still asked what I wanted. Comparing this experience with Fiji air flight from LA to Melbourne. Worse was missing my flight connection to Baltimore since Fiji air opted to wait for a passenger that couldn’t pass security. Instead of leaving at 9:40 pm, we left at 11. So spent overnight at a hotel for next day’s flight. Another expense!

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Related info for your journey

Access useful and relevant information related to your journey from St. Louis. This can include details such as airport transportation, visa requirements, travel insurance, luggage regulations, and any other information that can ensure a smooth and hassle-free travel experience. Please note that the information is based on general guidance and may need to be verified with official sources. Data last updated 14 March 2025.

  • What are the most popular destinations to fly to from St. Louis?

    For the current month, the most popular flights from St. Louis are Cancún, Atlanta, Boston. Cancún, Boston, Atlanta are the most popular locations from St. Louis year round.

  • What is the cheapest flight from St. Louis to anywhere?

    Users have flown out of St. Louis for as low as $424 to Denver (prices may vary depending on the airline and departure time). On average, users have booked flights for $750 to fly from St. Louis.

  • What is the cheapest premium economy flight from St. Louis?

    Options for some of the cheapest premium economy flights from St. Louis we have found on Cheapflights are as follows:
    Fly from Lambert-St Louis to Denver starting at $1,472
    Fly from Lambert-St Louis to Houston George Bush Intcntl Airport starting at $6,628

  • What is the cheapest month to fly from St. Louis?

    Currently, the cheapest month for flights from St. Louis is May. The most expensive month for flights is December. The cheapest prices are shown above but prices will vary according to departure times, airlines, class and how early you book.

  • How does Cheapflights help users find flights from St. Louis?

    When you search for this flight from St. Louis, Cheapflights searches on 900+ travel sites to save you time finding great flight deals online. Additionally, we offer filter features so you can choose a preferred cabin class or airline, see different price ranges, and much more so you can book the best flight for you.

  • Why should you use Cheapflights to find cheap flight tickets from St. Louis?

    Cheapflights helps you find that perfect flight from St. Louis by searching from hundreds of airlines and agencies you know and love. We are also free to use, in case you were wondering!

  • Can Cheapflights find flights from St. Louis with no change fees?

    Yes, we can. To see specific flights from St. Louis with no change fees, users can toggle flexible booking options after using the search form above to find flights.

  • Can Cheapflights notify me if prices for flights from St. Louis become cheaper?

    Yes, Cheapflights offers price alerts on flights from St. Louis so you can book your travels when it’s right. The Price Alerts feature is available by clicking the bell icon next to the flight deals above and providing your email address.

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Fly with Cheapflights

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How does Cheapflights help users find flights from St. Louis?

When you search for this flight from St. Louis, Cheapflights searches on 900+ travel sites to save you time finding great flight deals online. Additionally, we offer filter features so you can choose a preferred cabin class or airline, see different price ranges, and much more so you can book the best flight for you.

Why should you use Cheapflights to find cheap flight tickets from St. Louis?

Cheapflights helps you find that perfect flight from St. Louis by searching from hundreds of airlines and agencies you know and love. We are also free to use, in case you were wondering!

Can Cheapflights find flights from St. Louis with no change fees?

Yes, we can. To see specific flights from St. Louis with no change fees, users can toggle flexible booking options after using the search form above to find flights.

Can Cheapflights notify me if prices for flights from St. Louis become cheaper?

Yes, Cheapflights offers price alerts on flights from St. Louis so you can book your travels when it’s right. The Price Alerts feature is available by clicking the bell icon next to the flight deals above and providing your email address.

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