Cheap flights from Sydney to St. Louis from $1,061
This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Sydney to St. Louis departing on 23/8. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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How to get the cheapest flight ticket from Sydney to St. Louis
Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip
What is the cheapest month to fly to St. Louis?
The month of November is, on average, the cheapest month to fly to St. Louis from Sydney, with most prices found around $1,638. If you aren’t able to travel to St. Louis during the month of November, then flying in March is also cheap. Prices for this month can be found on momondo for an average of $1,840.
What is the cheapest day to depart on your flight to St. Louis?
According to our data, Saturday is the cheapest day to fly to St. Louis from Sydney. The lowest ticket price found for a Saturday departure recently was $2,148. Keep in mind that prices can always vary depending on your route and whether or not you are flying domestic or international. Flights from Sydney to St. Louis on a Thursday will generally be more expensive and average around $2,752. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.
What is the cheapest time of day to depart on your flight to St. Louis?
Flying to St. Louis from Sydney in the morning is the least expensive time of day to depart. momondo users have found prices as low as $2,201 when looking at flights departing in the morning. In the evening is when there is more demand to fly to St. Louis, so prices are often more expensive at around $3,195 per ticket.
Can stopping save me money on Sydney to St. Louis flights?
You could potentially save up to 1% on your flight if you consider stops on a Sydney to St. Louis flight.
What is the cheapest airline that flies from Sydney Kingsford Smith to Lambert-St Louis?
Qantas Airways, American Airlines, and Virgin Australia are the most popular carriers operating from Sydney Kingsford Smith to Lambert-St Louis
Which airlines fly to St. Louis?
United Airlines, Qantas Airways and Air Canada are the top three most popular airlines that fly to St. Louis from Sydney according to our data. United Airlines is the first choice among our users, with 50% of people opting to fly with this airline when travelling to St. Louis. Keep in mind that there are 4 different airlines that fly to St. Louis on a routine basis, so you have a few additional options to choose from.
When to book flights from Sydney to St. Louis
Cheap Sydney to St. Louis (SYD to STL) flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from Sydney to St. Louis
How far is Sydney Kingsford Smith to Lambert-St Louis by plane?
Sydney Kingsford Smith and Lambert-St Louis are 14576.1 km apart from one another. By plane, this route typically takes 18h 58m.
When did momondo last update prices for flights from Sydney Kingsford Smith Airport to Lambert-St Louis Airport?
Prices for flights from Sydney Kingsford Smith Airport to Lambert-St Louis Airport refresh daily.
How many operators does momondo search for flights from Sydney Kingsford Smith Airport to Lambert-St Louis Airport?
As of June 2025, there are 4 operators available to choose from for flights from Sydney Kingsford Smith Airport to Lambert-St Louis Airport.
How old do you have to be to fly from Sydney Kingsford Smith Airport to Lambert-St Louis Airport?
The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and stopovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Sydney Kingsford Smith Airport to Lambert-St Louis Airport.
What documentation or ID do you need to fly to Lambert-St Louis Airport?
The necessary travel and health documents for your Lambert-St Louis Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's licence and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.
What is the most popular airline from Sydney to St. Louis?
momondo data reveals that the most frequently booked airline on the route from Sydney to St. Louis is United Airlines, representing 50% of all bookings. The subsequent popular airlines are Qantas Airways at 26%, Air Canada at 16%, and American Airlines at 8%.
Best airlines flying from Sydney to St. Louis
Compare and see reviews for airlines that fly from Sydney to St. Louis with momondo
| Airline | Rating | Free cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom $1,411 | Free cancellation | Rating 7.4 8,840 reviews | |||
| PriceFrom $1,514 | Free cancellation | Rating 7.1 9,633 reviews | |||
| PriceFrom $1,744 | Free cancellation | Rating 7.5 864 reviews | |||
| PriceFrom $1,843 | Free cancellation | Rating 7.2 10,000 reviews |
Travelling to a place near St. Louis?
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Why should I use momondo to find a flight deal from Sydney to St. Louis?
To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to St. Louis from Sydney.
Can I find flights from Sydney to St. Louis with flexible booking policies on momondo?
Flights from Sydney to St. Louis with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.
How can momondo help me find flights from Sydney to St. Louis?
Once you have performed a search for Sydney to St. Louis flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.
I’m not ready to book a flight from Sydney to St. Louis right now. Can momondo alert me if prices change?
Yes momondo offers price alerts on flights to St. Louis from Sydney. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.