Cheap Flights from Adelaide to St Louis

Compare Adelaide to St Louis flight deals

Find the cheapest month or even day of the year to fly to St Louis

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Flight deals from Adelaide Airport to St Louis Airport

Looking for a cheap last-minute deal or the best return flight from Adelaide Airport to St Louis Airport? If you want to travel next month, return fares start from R 54,900. Find the lowest prices on one-way and return tickets right here.

Find the cheapest month to fly from Adelaide to St Louis

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Adelaide to St Louis flights are currently cheapest in April.

Adelaide to St Louis: Alternative routes

Compare routes from Adelaide to St Louis below. You may find an airport to fly into that's cheaper, faster, or easier than St Louis.

Adelaide to St Louis: Flight information

The things to know before you go.
Cheapest flight foundR 15,283
Cheapest month to flyApril

Finding cheap flights from Adelaide to St Louis: Frequently asked questions

The best price we found for a return flight from Adelaide to St Louis is R 30,761. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.
Currently, there are no airlines that fly direct from Adelaide to St Louis. But we found flights with one or more stops from R 30,761.
As of March 2026, there are no flights flying from Adelaide to St Louis.
The cheapest month to fly from Adelaide to St Louis is usually May.
After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Adelaide Airport to St Louis Airport on Wednesday, 13 May 2026.
No airlines currently offer direct flights between Adelaide Airport and St Louis Airport. Most routes have one or more stops.
We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to St Louis but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.
We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to St Louis is around 40 days in advance, so don’t leave your flight to the last minute.
Currently, Qantas offers the cheapest flight tickets to St Louis.

Flying from Adelaide Airport (ADL) to Lambert-St. Louis International Airport (STL): what you need to know

  • The timezone in St Louis is UTC-5, which is 15 hours 30 minutes behind Adelaide.

  • Get to the airport on time so you don't miss your ADL to STL flight. Be there at least two hours ahead for international flights and an hour early for domestic departures to avoid any last-minute rush.

  • Travelling during a peak time like January? Public holidays and other popular seasons can result in longer lines and delays at airport checkpoints. Play things extra safe and arrive up to four hours before an international flight and two hours before domestic departures.

How to find the cheapest flights from Adelaide Airport (ADL) to Lambert-St. Louis International Airport (STL)

  • Currently, R 15,283 is the lowest price we've found for a one-way Adelaide Airport to Lambert-St. Louis International Airport flight. The best price for a return ticket is R 30,761. Remember that fares could change due to availability at the time of booking.

  • It's often best to book ahead of time if you're hoping to get cheap tickets from ADL to STL. That's because flight prices are based on demand, which tends to rise closer to the date of departure.

  • If you're willing to be flexible with your travel dates, try using the 'Whole month' search function. It'll find the lowest price across the month when searching for a flight from Adelaide Airport to Lambert-St. Louis International Airport.

  • Never miss a deal on cheap flights from ADL to STL by creating a Price Alert. You'll receive an email or push notification on the app when a new discounted fare appears.

  • Select your preferred arrival and departure times, number of stops and airlines with the filters. Or sort your results by 'Cheapest' to get the best deals on flights from Adelaide Airport to Lambert-St. Louis International Airport.

Handy information about Adelaide Airport (ADL)

  • 75.6% of flights that depart Adelaide Airport land at their destination on time.

  • Central Adelaide to Adelaide Airport is around 8 kilometres. Depending on traffic, it'll take you about 15 minutes to get there if you're ride-sharing, catching a cab or driving.

  • Expect a trip time of about 50 minutes when using public transport.

  • Taking an early flight from Adelaide Airport to Lambert-St. Louis International Airport? Avoid the last-minute rush to the airport (and get some extra shut-eye) by choosing one of these stays near ADL:

Arriving at Lambert-St. Louis International Airport (STL)

Getting from Lambert-St. Louis International Airport (STL) to central St Louis

  • You'll find STL at 10701 Lambert International Blvd..

  • From Lambert-St. Louis International Airport, St Louis is approximately 26 kilometres away. It takes around 20 minutes to reach the centre by car.

  • If you're travelling on public transport, expect a journey time of about 35 minutes.

When to fly to Lambert-St. Louis International Airport (STL)

  • It's time to plan your dates for your flight from Adelaide Airport to Lambert-St. Louis International Airport. July is the busiest month to visit St Louis. If you want a more low-key vibe, go in April.

  • Book your flight from Adelaide Airport to Lambert-St. Louis International Airport for July if you want to explore St Louis during its warmest month. Expect temperatures of between 17ºC (63ºF) and 33ºC (91ºF).

  • Look for cheap tickets from ADL to STL in January if you want to travel in cooler conditions. Temperatures are at their lowest then, ranging between -8ºC (18ºF) and 7ºC (45ºF) on average.

Explore more of United States

  • Chicago is just one of the many places in United States waiting to be discovered after you've seen St Louis. Around 418 kilometres away to the north-east, well-known attractions include Millennium Park, Art Institute of Chicago and LandShark Beer Garden at Navy Pier.

  • Indianapolis is another essential stop in United States and is around 370 kilometres east of St Louis. No journey is complete without dropping by The Children's Museum of Indianapolis, Indianapolis Museum of Art and Indianapolis Zoo.

Prices shown on this page are estimated lowest prices only. Found in the last 45 days.