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Find cheap flights from St. Louis to Australia from $521

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from St. Louis to Australia departing on 8/20. 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.
1 adult
0 bags
Sat 5/18
Sat 5/25

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Best Australia Flight Deals

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours

Sydney
Sydney2 stops$1,313
Brisbane
Brisbane2 stops$1,322
Cairns
Cairns2 stops$1,519

Good to know

Low season

April

High season

October

Cheapest flight

$521
Best time to beat the crowds with an average 5% drop in price.
Most popular time to fly and prices are also 12% lower on average.
Flight from St. Louis to Melbourne

FAQs - booking Australia flights

  • How does KAYAK find such low prices on flights from St. Louis to Australia?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from St. Louis to Australia.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from St. Louis to Australia?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Australia from St. Louis is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from St. Louis to Australia?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Australia with an airline and back to St. Louis with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from St. Louis to Australia?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Australia from St. Louis up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

See more FAQs

Top tips for finding cheap flights to Australia

  • Morning departure is around 3% more expensive than an evening flight, on average*.
*Average of the lowest prices shown in KAYAK’s search results for departures within the next 30 days

Top 5 airlines serving from St. Louis to Australia

 
Need help choosing which airline to fly with from St. Louis to Australia? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
8.2
Air New ZealandOverall score based on 670 reviews
8.4boarding
8.1comfort
7.9entertainment
7.6food
8.8crew
Airline reviews

All was good, the only thing was it didn't run on time.

8.0 ExcellentDaniel, Apr 2024ZQN - SYD
Read more about Air New Zealand reviews

All was good, the only thing was it didn't run on time.

Great meal. Best seats ever! They need to teach other airlines how to do that.

The staff and crew on board were excellent. Business class however, was very weird. I thought we would have individual pods, but the way it was set up was unexpected. Not very private and If you wanted to lay down, you had to have an entire bed made up for you by the crew, rather than how Delta one works where you could just lie down whenever you feel like it. It was a 16 hour flight. I chose not to have my bed made, and that turned out to be a good idea because everybody who had their bed made had to wait for the crew to roll up their mattresses. So strange!

They announced food service but then never came around. We also couldn’t land so kept trying to get to runway and then had to come up and go around happened like 3 times and cause the child next to me to start throwing up

The recline on the seat in front of me came back so that I was staring at the top of the man’s head in front of me the whole trip. He refused to bring his seat back up twice every time he was instructed to do so and only relented when he had a tray of good in front of him. And then right back in my lap!!! Horrible man!! I complained to the staff multiple times, but no one would address the issue. Otherwise, it would have been a perfect flight.

There was a snafu with confirming seats at check which left us in limbo for the second leg of our trip. I believe the ANZ app is not well integrated with the systems at the terminal resulting in this disconcerting error.

Flight was canceled due to technical issue shortly before the check-in counters opened. Passengers were rebooked on a flight three days later. Request to be accommodated on Air Tahiti Nui could not be processed. Customer service sorted out the refund after calling and being put on hold for almost an hour.

The pilot tried to make up for lost time due to delays that were out of her control. She communicated the issues openly and clearly and made every effort to do what she could to alleviate issues.

Boarding instructions on one leg of my journey were not well communicated at the gate (Melbourne to Auckland)

The only thing that was less than excellent was the food server at dinner. (I had the chicken.) It wasn't that it was poorly heated or in difficult-to-open containers; it was just that it had a very peculiar taste. And I use that to describe not just the main course but the dessert as well. Very odd flavours for what seemed to be a mainstream item. I did like that the airline offered us a free glass of wine. The breakfast omelette wasn't bad, although it was quite bland.

Amazing! Was put on the earlier flight and I requested for an aisle seat and was given it. Thanks Qantas!

The staff we fantastic and seemed to work very well with each other

Business lounge in Melbourne mediocre. Look at Emirates or Qatar, Qantas! Great friendly crew. Food was good but Emirates is a level above. Business seat good. But can’t compare to Qatar. Main reason for booking Qantas is loyalty and terrific connection via Perth to LHR.

It's only a short trip from Sydney to Melbourne, which i have done many times. The trip met my expectations

The crew were amazing - A great job. They made me feel special and valued.

I really appreciated the fact that when I checked my bags at the Quantas counter after arriving from an international flight an hour early, the agent noticed I had a very long layover. He then found an earlier flight that allowed me to get to Cairns several hours earlier than I planned. That was amazing because I had already traveled over 20 hours and wasn’t looking forward to such a long layover. It allowed me to see my daughter and grandchildren much earlier (it had been two years since I visited last).

Qantas cancelled my flight for no good reason and rebooked me into a middle seat.

Boarding was terrible - the ground staff member Fredeya at lax was more military than customer service, have never encountered a customer service representative as rude as her. Apart from that all other staff were wonderful and the flight was good.

The flight met my expectations. It left and landed on time

My bag didn’t make it but otherwise it was a great experience.

The delays (5 hrs) were a comedy of errors, and the multiple safety issues encountered were very concerning.

flight delays, staff only communicating when pushed, food service lasting a grand total of 7 minutes, stuck in seat from 45mins into flight until landing

Crew was great and did their best to make us comfortable and captain came out at the beginning to announce why the flight was delayed, weather situation up ahead, and kept us updated throughout the flight.

the flight from Tampa departed with a delay. The food on board was poor, usually on international airlines alcoholic beverages are offered free of charge , but here it was for a fee, the cutlery was wooden, there were no hot drinks (tea, coffee). Unfortunately, I didn't take pictures of the portions of food, but it wouldn't have been enough for a child either.And in the future, I will try not to use the services of this airline

they made me check my carryon. There was space in the overhead bins.

Nice flight, nice crew but no cookie or napkin with my seltzer.

Trip was smooth bumpy from the wind but no issues at all the crew attendant was very pleasant and had great customer service

This was a Lufthansa flight. Disappointing main meal. Very rough over Canada and arrival at FRA. IFE was almost unusable.

It got me where I needed it to; not much more. It had no competition so that was why I chose it.

I liked everything about the flight. The service was excellent!

Plane took off without me, my stepdad and a dozen other passengers. It went from an hour delay to boarding in 15 montures without notifying anyone. Names were not called overhead. Now I’m missing a day of work and stuck in Charolette overnight paying for a hotel and Ubers out of pocket

I arrived to the airport 2 hours before my American Airlines flight was scheduled to take off. I have TSA pre-check. The airport was crazy packed when I arrived. After momentarily standing in the pre-check line, the TSA agent said that I am not pre-check. Of course I said that I am because I entered my KTN number on all my traveling sites and programs. I had to get out of line and go back to the AA counter to discover that American Airlines did not add my KTN to my boarding pass. I had to call TSA to find out my number, then have AA enter it onto my boarding pass. The emblem would not load onto my boarding pass. By this time, I decided to use my Clear in order to get through TSA but the line was ridiculous long. By the time I made through TSA, I missed my 11:08am flight and was re-booked for the 5:30pm. This is after the AA employee told me I should have gotten to the airport early. AA use to be a dependable airline not I use them only if I have too.

Average - flew with Jet Blue internal and it was far more comfortable and better food and entertainment. Notable difference

Flight from SBP to DFW 1. They rerouted us through PHX 2. Delayed flight out of SBP for 3 hrs so we missed our connection Downgrade on rerouted flight. Back of the plane, center seats, didn't sit together 4. Return flight out of DFW same exact thing. Delayed, missed connection, Downgrade + they lost our luggage! A complete mess.

On the new 319 NEO? seatback entertainment system did not work even when the flight attendant rebooted it. At least I had my cell phone to connect with wifi.

Good flights. Departure and arrivals were on time. DFW was a little problematic in that the Skytrain without prior notice bypassed the Echo terminal so that delayed my arrival at my connecting flight.

Do not eat the bagel! Otherwise, good albeit late, breakfast in first. Boarding downgrade only because flight was delayed due to plane change due to undisclosed problem with original aircraft. I did not use entertainment.

Because I can’t stand very long in one place, I was allowed to reword.

It was a good flight. Of course it was full, but it went well.

Overall the flights pretty good. The snacks we’re good and they were plenty of them. Both boarding and deplaning went quickly.

It was great to check carryon luggage at no charge when there was no room for ours. A hidden benefit of having low-tier tickets. Also great to stay off plane as long as possible. Airline gave us seats we wanted on this last leg, again at no charge.

Fresh fuit or veg snacks would be so great, but there are two good restaurants in Denver airport. Try Etais UDIS or Freshens DIA for nutritious delicious pita sandwiches/ donairs and crepes in Freshens.

The late departure Of two hours waitresses, immature, and gossiping

Crowded plane but it flew on time and had friendly staff

We had a good flight, service was good and lots of leg room. Service was good and the staff were friendly.

The Air Canada agent was very helpful helping with my luggage and cat carrier when I went there instead of United.

Overall I will say it was a very good experience. It was as comfortable as can be expected for such a long flight - 12 hours from Toronto to Tokyo. Everyone was very pleasant and polite. Even the passengers were cooperative and trying to be nice to each other. Of course the space is limited on such a long flight. The bathrooms were actually very clean. The food was very good. I liked how there was a variety of food options. The in flight entertainment system was also very impressive! There were some children on the flight but they were well behaved and hardly ever crying. Great Job Canada Air! I will definitely fly with Air Canada again!

It was upsetting that the flights were canceled but that was due to weather. I did not receive any vouchers for food or a hotel stay when I was forced to spend the night in Montreal. I was also upset when my seat was changed many times.. The plane seemed old with a non-functioning screen and loose side pockets.. All in all in need of updating. On the positive side, the staff in areas was friendly and helpful.

Lost my bag. My first ever flight with them that they forced me to gate check my bag on, due to them having a 30 year old plane with small carry on bins, and they lost my bag. Never again.

United force you to download their App to do the check-in.

Book cheap flights from St. Louis to Australia

Recent round-trip flight deals

9/10Tue
2 stopsAir New Zealand
35h 00mSTL-MEL
9/24Tue
2 stopsAir New Zealand
26h 51mMEL-STL
$1,309
9/10Tue
2 stopsAir New Zealand
24h 44mSTL-SYD
9/24Tue
2 stopsAir New Zealand
25h 41mSYD-STL
$1,313
5/15Wed
1 stopAmerican Airlines
22h 03mSTL-SYD
5/22Wed
1 stopAmerican Airlines
29h 02mSYD-STL
$1,463
5/14Tue
2 stopsAmerican Airlines
22h 57mSTL-SYD
5/21Tue
2 stopsAmerican Airlines
25h 15mSYD-STL
$1,466
5/14Tue
3 stopsAir Canada
29h 20mSTL-SYD
5/21Tue
2 stopsAir Canada
50h 45mSYD-STL
$1,518
5/14Tue
3 stopsAir Canada
29h 20mSTL-SYD
5/21Tue
3 stopsAir Canada
50h 45mSYD-STL
$1,524
5/16Thu
2 stopsUnited Airlines
30h 05mSTL-MEL
5/23Thu
2 stopsUnited Airlines
26h 20mMEL-STL
$1,557
9/9Mon
1 stopQantas Airways
22h 35mSTL-SYD
9/24Tue
1 stopQantas Airways
21h 30mSYD-STL
$1,623
9/10Tue
1 stopQantas Airways
23h 40mSTL-SYD
9/18Wed
1 stopQantas Airways
21h 30mSYD-STL
$1,703
9/8Sun
2 stopsUnited Airlines
28h 45mSTL-SYD
9/23Mon
2 stopsUnited Airlines
26h 08mSYD-STL
$1,720

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Recent one-way flight deals

8/20Tue
2 stops
40h 35mSTL-MEL
$521
5/29Wed
3 stops
51h 47mSTL-AVV
$707
5/29Wed
3 stops
45h 17mSTL-MEL
$733
8/20Tue
2 stopsQantas Airways
38h 20mSTL-AVV
$1,116
8/20Tue
3 stops
26h 15mSTL-MEL
$1,127
5/29Wed
2 stops
43h 22mSTL-MEL
$1,158
5/29Wed
2 stopsJapan Airlines
44h 33mSTL-MEL
$1,344
5/29Wed
2 stopsQantas Airways
37h 48mSTL-AVV
$1,421
7/6Sat
2 stopsAir New Zealand
37h 30mSTL-MEL
$1,454
7/6Sat
1 stopAmerican Airlines
32h 16mSTL-MEL
$2,343

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Last minute flights from St. Louis to Australia

Last minute flight, train and bus deals

4/22Mon
multi-stopQatar Airways
38h 19mSTL-MEL
4/25Thu
multi-stopQatar Airways
43h 14mMEL-STL
$2,296
4/22Mon
multi-stop
32h 40mSTL-MEL
4/25Thu
multi-stop
28h 29mMEL-STL
$2,571
4/22Mon
multi-stopQantas Airways
43h 46mSTL-MEL
4/25Thu
multi-stopQantas Airways
40h 54mMEL-STL
$2,778
4/22Mon
multi-stop
27h 01mSTL-MEL
4/25Thu
multi-stop
28h 07mMEL-STL
$3,050
4/22Mon
multi-stopQantas Airways
43h 46mSTL-MEL
4/25Thu
multi-stopQantas Airways
40h 39mMEL-STL
$3,350
4/22Mon
multi-stopQantas Airways
24h 13mSTL-AVV
4/25Thu
multi-stopQantas Airways
41h 04mAVV-STL
$4,040
4/22Mon
multi-stopEmirates
37h 25mSTL-MEL
4/24Wed
multi-stopEmirates
56h 29mMEL-STL
$4,345
4/22Mon
multi-stopEmirates
35h 10mSTL-MEL
4/24Wed
multi-stopEmirates
56h 29mMEL-STL
$4,351
4/22Mon
multi-stop
34h 15mSTL-MEL
4/25Thu
multi-stop
43h 05mMEL-STL
$16,317

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St. Louis - Australia Flights

Departure:

St. Louis (STL)United States

Return flight deals:

Australia - St. Louis

Cabin classes: