$745 Cheap Flights from St. Louis (STL) to Melbourne (AVV)

View $745 flight on Sun, Feb 1, 2026Opens in a new window

Popular airlines from St. Louis Lambert Intl. Airport (STL) to Avalon Airport (AVV)

  • notification illustration

    Be in the know

    Get alerts if flight prices drop or rise*
  • deals illustration

    Book smarter

    Save up to 30% on select hotels after you book a flight*
  • trophy illustration

    Earn twice

    Earn your airline miles on top of our OneKeyCash
    Learn about One Key

Cheap Flights from St. Louis to Melbourne (STL-AVV)

Prices were available within the past 7 days and start at $745 for one-way flights and $1,400 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

American Airlines
Tue, Mar 17 - Wed, Mar 25
STL
St. Louis
AVV
Melbourne
$1,400 Roundtrip, found 1 day ago
$1,400
Roundtrip
found 1 day ago
Select American Airlines flight, departing Tue, Mar 17 from St. Louis to Melbourne, returning Wed, Mar 25, priced at $1,400 found 1 day ago
American Airlines
Tue, Mar 17 - Wed, Mar 25
STL
St. Louis
AVV
Melbourne
$1,442 Roundtrip, found 1 day ago
$1,442
Roundtrip
found 1 day ago
Select American Airlines flight, departing Tue, Mar 17 from St. Louis to Melbourne, returning Wed, Mar 25, priced at $1,442 found 1 day ago
American Airlines
Tue, Mar 17 - Wed, Mar 25
STL
St. Louis
AVV
Melbourne
$1,443 Roundtrip, found 1 day ago
$1,443
Roundtrip
found 1 day ago
Select American Airlines flight, departing Tue, Mar 17 from St. Louis to Melbourne, returning Wed, Mar 25, priced at $1,443 found 1 day ago
American Airlines
Sat, Mar 14 - Mon, Mar 23
STL
St. Louis
AVV
Melbourne
$1,489 Roundtrip, found 6 days ago
$1,489
Roundtrip
found 6 days ago
Select American Airlines flight, departing Sat, Mar 14 from St. Louis to Melbourne, returning Mon, Mar 23, priced at $1,489 found 6 days ago
American Airlines
Sat, Mar 14 - Mon, Mar 23
STL
St. Louis
AVV
Melbourne
$1,492 Roundtrip, found 6 days ago
$1,492
Roundtrip
found 6 days ago
Select American Airlines flight, departing Sat, Mar 14 from St. Louis to Melbourne, returning Mon, Mar 23, priced at $1,492 found 6 days ago
United
Tue, Mar 17 - Wed, Mar 25
STL
St. Louis
AVV
Melbourne
$1,544 Roundtrip, found 1 day ago
$1,544
Roundtrip
found 1 day ago
Select United flight, departing Tue, Mar 17 from St. Louis to Melbourne, returning Wed, Mar 25, priced at $1,544 found 1 day ago
United
Tue, Mar 17 - Wed, Mar 25
STL
St. Louis
AVV
Melbourne
$1,549 Roundtrip, found 1 day ago
$1,549
Roundtrip
found 1 day ago
Select United flight, departing Tue, Mar 17 from St. Louis to Melbourne, returning Wed, Mar 25, priced at $1,549 found 1 day ago
American Airlines
Sat, Mar 14 - Mon, Mar 23
STL
St. Louis
AVV
Melbourne
$1,599 Roundtrip, found 15 hours ago
$1,599
Roundtrip
found 15 hours ago
Select American Airlines flight, departing Sat, Mar 14 from St. Louis to Melbourne, returning Mon, Mar 23, priced at $1,599 found 15 hours ago
American Airlines
Sat, Mar 14 - Mon, Mar 23
STL
St. Louis
AVV
Melbourne
$1,599 Roundtrip, found 3 hours ago
$1,599
Roundtrip
found 3 hours ago
Select American Airlines flight, departing Sat, Mar 14 from St. Louis to Melbourne, returning Mon, Mar 23, priced at $1,599 found 3 hours ago
Qantas Airways
Sun, Feb 1 - Thu, Feb 12
STL
St. Louis
AVV
Melbourne
$1,603 Roundtrip, found 1 day ago
$1,603
Roundtrip
found 1 day ago
Select Qantas Airways flight, departing Sun, Feb 1 from St. Louis to Melbourne, returning Thu, Feb 12, priced at $1,603 found 1 day ago

Frequently asked questions

How much does a flight from Lambert-St. Louis Intl. Airport (STL) to Avalon Airport (AVV) cost?
Lock in a cheap one-way flight from $745 or cheap return flight from $1,400 from Lambert-St. Louis Intl. Airport (STL) to Avalon Airport (AVV) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight offers on this route.
What is the cheapest month to fly from Lambert-St. Louis Intl. Airport (STL) to Avalon Airport (AVV)?
The cheapest month to fly from STL to AVV is March, when demand is low. Off-peak season is often when you'll find cheap fares for travel between these airports.
What is the cheapest airline that flies from Lambert-St. Louis Intl. Airport (STL) to Avalon Airport (AVV)?
To find the cheapest airline that'll fly you from STL to AVV, use Expedia's filter tool. Tailor your search based on your travel needs, such as preferred carriers and ideal departure window. You can then sort your results by "Price (lowest to highest)" to see the cheapest flights first.
How many flights per day from Lambert-St. Louis Intl. Airport (STL) to Avalon Airport (AVV)?
Nonstop flights from Lambert-St. Louis Intl. Airport (STL) to Avalon Airport (AVV) aren't available daily, so you'll need to take a flight with a layover. Explore your options with our filter tool. Enter your travel dates and choose either "1 Stop" or "2+ Stops."
What day of the week has the most flights from STL to AVV?
Friday is generally the busiest day for flights, while Tuesday is often the quietest.* Just remember that flight schedules can vary depending on a number of factors, including the airline and season.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Lambert-St. Louis Intl. Airport (STL) to Avalon Airport (AVV)?
Choose a flight from Lambert-St. Louis Intl. Airport (STL) to Avalon Airport (AVV) that takes off before 3 PM to reduce the likelihood of delays. Departures after this time are on average 22% more likely to be canceled.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from Lambert-St. Louis Intl. Airport (STL) to Avalon Airport (AVV) last-minute?
Last-minute bookings from STL to AVV are typically more expensive. To secure the lowest prices, start looking for flights early. That said, if your travel plans are flexible, you may find a cheap ticket right before your trip.
Is it cheaper to book a STL to AVV flight and hotel package?
Compared with arranging flights and hotels separately, booking a STL to AVV flight and hotel package with Expedia could lead to significant savings. Better still, having it all in one place takes the hassle out of planning your trip. Simply pick your flights and choose from our extensive range of hotels, then customize your trip with other add-ons like activities and car rentals.
Can I cancel or change the date of my flight from Lambert-St. Louis Intl. Airport (STL) to Avalon Airport (AVV)?
Typically, you're able to cancel or reschedule your STL to AVV flight. However, there may be additional fees, especially if your booking was made more than 24 hours ago. Double-check your itinerary for the airline's fees and rules on flight changes, or if you need more information, go to our Customer Service portal.

Travel information

Origin airport
Lambert-St. Louis Intl.
Destination airport
Avalon
Airlines serving
Qantas Airways
Roundtrip price
$1,399
Distance
9511 mi

Book with confidence

St. Louis to Melbourne Flights

The cheapest times to fly from St. Louis to Melbourne

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from St. Louis to Melbourne are during the month of March. You can find some of the cheapest flights from St. Louis to Melbourne with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from St. Louis to Melbourne

Sunday is one of the best days to book for cheap flights from St. Louis to Melbourne: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from St. Louis to Melbourne

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from St. Louis to Melbourne in 2025. You can also book with separate airlines for your outbound and return journeys, from $745 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap St. Louis to Melbourne flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your St. Louis to Melbourne airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

St. Louis to Melbourne Flights

Explore a world of travel with Expedia

*Available to One Key members.