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Cheap flights from St. Louis to Sydney from $1,456

This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from St. Louis to Sydney departing on 5/14. 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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Cheap St. Louis to Sydney (STL to SYD) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from St. Louis to Sydney

Best Price Found

$1,456

Fastest flight time

21h 06m

Direct flights

None

Airports in Sydney

1 airport
The best flight deal from St. Louis to Sydney found on momondo in the last 72 hours is $1,456
The fastest flight from St. Louis to Sydney takes 21h 06m
There are no direct flights from St. Louis to Sydney. Popular non-direct route for this connection is Lambert-St Louis Airport - Sydney Kingsford Smith Airport.
There is 1 airport near Sydney: Sydney Kingsford Smith (SYD)

How to get the cheapest flight ticket from St. Louis to Sydney

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 from St. Louis to Sydney?

November. The cheapest time of year to fly to Sydney from St. Louis is November. Most expensive is December

What is the cheapest day to depart St. Louis for Sydney?

Sunday. The cheapest day of the week is typically Sunday. The most expensive is typically Wednesday

When is the cheapest time to fly from St. Louis to Sydney?

In the morning. St. Louis to Sydney flights are approximately 10% more expensive in the evening than in the morning

What is the cheapest airline that flies to Sydney from St. Louis?

United Airlines. Air Canada, Air New Zealand, and American Airlines are the most popular carriers operating from St. Louis to Sydney

What is the cheapest St. Louis to Sydney flight route?

Lambert-St Louis - Sydney Kingsford Smith. Fly from Lambert-St Louis to Sydney Kingsford Smith for the best St. Louis - Sydney flight prices

How far in advance should you book St. Louis to Sydney flights?

47 days before. The cheapest time to buy a flight from St. Louis to Sydney is approximately 47 days to departure

When you’re planning your trip from St. Louis to Sydney, the most popular airport-to-airport route is Lambert-St Louis Airport to Sydney Kingsford Smith Airport. The cheapest route from St. Louis to Sydney is STL — SYD with an average price of $1,435 RT during the month of March.

Lambert-St Louis Airport (STL) to Sydney Kingsford Smith Airport (SYD)$1,435
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Easily compare round-trip flights from St. Louis to Sydney

Below you can see the best fares for your round-trip flight route over the next six months. All fares were found on momondo this week. Browse the quickest and cheapest flights from St. Louis to Sydney by changing tabs
Air New Zealand
May 14
STL4:57 pmLambert-St Louis
24h 48m
2 stops
SYD8:45 amSydney Kingsford Smith
May 21
SYD11:50 amSydney Kingsford Smith
43h 33m
2 stops
STL4:23 pmLambert-St Louis
American Airlines
Apr 29
STL6:59 pmLambert-St Louis
21h 06m
1 stop
SYD7:05 amSydney Kingsford Smith
May 8
SYD9:15 amSydney Kingsford Smith
29h 02m
1 stop
STL11:17 pmLambert-St Louis
Air Canada
May 14
STL11:00 amLambert-St Louis
29h 20m
3 stops
SYD7:20 amSydney Kingsford Smith
May 21
SYD9:20 amSydney Kingsford Smith
26h 45m
2 stops
STL9:05 pmLambert-St Louis
Qantas Airways
Aug 3
STL6:29 amLambert-St Louis
36h 26m
2 stops
SYD9:55 amSydney Kingsford Smith
Aug 28
SYD9:10 amSydney Kingsford Smith
21h 30m
1 stop
STL3:40 pmLambert-St Louis
Multiple Airlines
Aug 3
STL11:00 amLambert-St Louis
30h 45m
3 stops
SYD8:45 amSydney Kingsford Smith
Aug 28
SYD9:55 amSydney Kingsford Smith
25h 26m
2 stops
STL8:21 pmLambert-St Louis
American Airlines
Apr 29
STL1:11 pmLambert-St Louis
26h 54m
2 stops
SYD7:05 amSydney Kingsford Smith
May 8
SYD9:15 amSydney Kingsford Smith
25h 15m
2 stops
STL7:30 pmLambert-St Louis

Search last-minute flights to Sydney from St. Louis

Find and compare round-trip flight prices for your last-minute flight from St. Louis to Sydney
Qantas Airways
Apr 3
STL7:10 pmLambert-St Louis
20h 55m
1 stop
SYD8:05 amSydney Kingsford Smith
Apr 17
SYD5:35 pmSydney Kingsford Smith
20h 19m
1 stop
STL10:54 pmLambert-St Louis
Delta
Apr 3
STL6:27 amLambert-St Louis
33h 08m
2 stops
SYD7:35 amSydney Kingsford Smith
Apr 17
SYD9:25 amSydney Kingsford Smith
23h 43m
2 stops
STL6:08 pmLambert-St Louis
American Airlines
Apr 3
STL7:10 pmLambert-St Louis
20h 55m
1 stop
SYD8:05 amSydney Kingsford Smith
Apr 17
SYD9:15 amSydney Kingsford Smith
23h 32m
2 stops
STL5:47 pmLambert-St Louis
Cathay Pacific
Apr 6
STL12:03 pmLambert-St Louis
29h 42m
2 stops
SYD8:45 amSydney Kingsford Smith
Apr 13
SYD9:50 pmSydney Kingsford Smith
64h 04m
2 stops
STL10:54 pmLambert-St Louis
Multiple Airlines
Apr 6
STL5:06 pmLambert-St Louis
46h 09m
2 stops
SYD6:15 amSydney Kingsford Smith
Apr 13
SYD9:35 pmSydney Kingsford Smith
40h 19m
3 stops
STL10:54 pmLambert-St Louis
Qantas Airways
Apr 6
STL5:06 pmLambert-St Louis
22h 59m
1 stop
SYD7:05 amSydney Kingsford Smith
Apr 13
SYD7:30 pmSydney Kingsford Smith
38h 59m
2 stops
STL7:29 pmLambert-St Louis

Best airlines flying from St. Louis to Sydney

Compare and see reviews for airlines that fly from St. Louis to Sydney with momondo
Airline
Rating
Free Cancellation
Price
United AirlinesPriceFrom $986Free CancellationRating
7.4
11,481 reviews
Search United Airlines flights
DeltaPriceFrom $1,013Free CancellationRating
8.0
11,418 reviews
Search Delta flights
Air CanadaPriceFrom $1,183Free CancellationRating
7.0
6,743 reviews
Search Air Canada flights
American AirlinesPriceFrom $1,214Free CancellationRating
7.3
15,202 reviews
Search American Airlines flights
Qantas AirwaysPriceFrom $1,257Free CancellationRating
7.7
1,060 reviews
Search Qantas Airways flights
Air New ZealandPriceFrom $1,422Free CancellationRating
8.2
685 reviews
Search Air New Zealand flights

Air New Zealand flights from St. Louis to Sydney

Our best Air New Zealand deals on St. Louis to Sydney flight tickets
Air New Zealand
May 14
STL4:57 pmLambert-St Louis
24h 48m
2 stops
SYD8:45 amSydney Kingsford Smith
May 21
SYD11:50 amSydney Kingsford Smith
43h 33m
2 stops
STL4:23 pmLambert-St Louis
Air New Zealand
Apr 7
STL6:19 amLambert-St Louis
35h 26m
2 stops
SYD8:45 amSydney Kingsford Smith
Apr 25
SYD11:50 amSydney Kingsford Smith
25h 24m
2 stops
STL10:14 pmLambert-St Louis
Air New Zealand
Aug 3
STL6:20 amLambert-St Louis
37h 15m
2 stops
SYD10:35 amSydney Kingsford Smith
Aug 28
SYD11:50 amSydney Kingsford Smith
37h 04m
2 stops
STL9:54 amLambert-St Louis

American Airlines flights from St. Louis to Sydney

Our best American Airlines deals on St. Louis to Sydney flight tickets
American Airlines
Apr 29
STL6:59 pmLambert-St Louis
21h 06m
1 stop
SYD7:05 amSydney Kingsford Smith
May 8
SYD9:15 amSydney Kingsford Smith
29h 02m
1 stop
STL11:17 pmLambert-St Louis
American Airlines
Apr 29
STL1:11 pmLambert-St Louis
26h 54m
2 stops
SYD7:05 amSydney Kingsford Smith
May 8
SYD9:15 amSydney Kingsford Smith
25h 15m
2 stops
STL7:30 pmLambert-St Louis
American Airlines
Apr 29
STL6:59 pmLambert-St Louis
21h 06m
1 stop
SYD7:05 amSydney Kingsford Smith
May 8
SYD9:15 amSydney Kingsford Smith
25h 15m
2 stops
STL7:30 pmLambert-St Louis

  • How far is Lambert-St Louis to Sydney Kingsford Smith by plane?

    Lambert-St Louis and Sydney Kingsford Smith are 9057.2 mi apart from one another. A reasonable flight in good conditions will take 21h 06m.

  • When did momondo last update prices for flights from Lambert-St Louis Airport to Sydney Kingsford Smith Airport?

    Prices for flights from Lambert-St Louis Airport to Sydney Kingsford Smith Airport are updated daily.

  • How many operators does momondo search for flights from Lambert-St Louis Airport to Sydney Kingsford Smith Airport?

  • How old do you have to be to fly from Lambert-St Louis Airport to Sydney Kingsford Smith 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 layovers 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 Lambert-St Louis Airport to Sydney Kingsford Smith Airport.

  • What documentation or ID do you need to fly to Sydney Kingsford Smith Airport?

    The travel and health documents you'll need for your trip to Sydney Kingsford Smith Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Sydney Kingsford Smith Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.


Alternative routes for St. Louis to Sydney

Compare alternative flights to and from nearby airports and cities to discover the best prices and most convenient flight times
Kansas City to Sydney Flights
Fastest flight time22h 00m
Cheapest price$1,482
Columbia, Missouri to Sydney Flights
Fastest flight time20h 10m
Cheapest price$3,076

Similar St. Louis to Sydney flights

Flexible with your destination? Broaden your search and find flights similar to your St. Louis to Sydney route

Why use momondo?

Why should I use momondo to find a flight deal from St. Louis to Sydney?

It is quick and easy to find St. Louis to Sydney flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Sydney that suits you.

Can I find flights from St. Louis to Sydney with flexible booking policies on momondo?

Yes. All flights to Sydney from St. Louis on momondo can be compared and filtered by various policies on offer, including flexible booking.

How can momondo help me find flights from St. Louis to Sydney?

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Sydney from St. Louis.

I’m not ready to book a flight from St. Louis to Sydney right now. Can momondo alert me if prices change?

If you are not ready to book a flight from St. Louis to Sydney now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Sydney and let you know when they change.


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