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Cheap flights from South Pacific to St. Louis from $726

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from South Pacific to St. Louis departing on 6/1. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

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Find the cheapest flights from South Pacific to St. Louis

Cheap round-trip flights

Enter your travel dates to find the best prices.
American Airlines Logo
9:00 am - 4:33 pm
MEL
-
STL
22h 33m
2 stops
American Airlines Logo
5:18 pm - 5:00 am
STL
-
MEL
20h 42m
1 stop
$1,188American Airlines
Mon, Jun 1 - Mon, Jun 8
Air Canada Logo
8:30 pm - 12:06 pm
MEL
-
STL
54h 36m
3 stops
Air Canada Logo
2:15 pm - 11:05 am
STL
-
MEL
29h 50m
3 stops
$1,239Air Canada
Mon, Jun 1 - Mon, Jun 8
Air Canada Logo
9:20 am - 12:06 pm
SYD
-
STL
41h 46m
2 stops
Air Canada Logo
1:05 pm - 7:20 am
STL
-
SYD
27h 15m
2 stops
$1,411Air Canada
Wed, May 20 - Thu, May 28
Qantas Airways Logo
9:10 am - 11:56 pm
SYD
-
STL
29h 46m
1 stop
Qantas Airways Logo
6:35 am - 7:05 am
STL
-
SYD
33h 30m
1 stop
$1,447Qantas Airways
Mon, Jun 1 - Mon, Jun 8
Air Canada Logo
9:20 am - 8:25 pm
SYD
-
STL
26h 05m
2 stops
Air Canada Logo
1:05 pm - 7:20 am
STL
-
SYD
51h 15m
2 stops
$1,468Air Canada
Mon, Jun 1 - Mon, Jun 8
American Airlines Logo
9:10 am - 7:51 pm
SYD
-
STL
25h 41m
2 stops
American Airlines Logo
6:00 am - 7:05 am
STL
-
SYD
34h 05m
1 stop
$1,484American Airlines
Thu, Jul 23 - Tue, Aug 11
Delta Logo
9:15 am - 11:53 pm
SYD
-
STL
29h 38m
2 stops
Delta Logo
8:50 am - 6:50 am
STL
-
SYD
31h 00m
2 stops
$1,502Delta
Mon, Jul 27 - Wed, Aug 12
United Airlines Logo
10:55 am - 11:00 pm
MEL
-
STL
27h 05m
2 stops
United Airlines Logo
11:45 am - 8:15 am
STL
-
MEL
29h 30m
2 stops
$1,745United Airlines
Mon, Sep 7 - Sun, Sep 27
Qantas Airways Logo
9:45 am - 11:05 pm
MEL
-
STL
29h 20m
1 stop
Qantas Airways Logo
6:30 am - 6:45 am
STL
-
MEL
32h 15m
1 stop
$1,906Qantas Airways
Thu, Oct 8 - Mon, Oct 12
United Airlines Logo
6:10 am - 4:57 pm
LST
-
STL
49h 47m
3 stops
United Airlines Logo
8:30 am - 4:05 pm
STL
-
LST
40h 35m
2 stops
$2,513United Airlines
Wed, May 13 - Sat, May 16

American Airlines flights from South Pacific to St. Louis

Our best American Airlines deals on South Pacific to St. Louis flight tickets
American Airlines
Jun 1
MEL9:00 amMelbourne
22h 33m
2 stops
STL4:33 pmLambert-St Louis
Jun 8
STL5:18 pmLambert-St Louis
20h 42m
1 stop
MEL5:00 amMelbourne
$1,188
American Airlines
Jul 23
SYD9:10 amSydney Kingsford Smith
25h 41m
2 stops
STL7:51 pmLambert-St Louis
Aug 11
STL6:00 amLambert-St Louis
34h 05m
1 stop
SYD7:05 amSydney Kingsford Smith
$1,484
American Airlines
Jul 23
SYD12:00 pmSydney Kingsford Smith
19h 33m
1 stop
STL4:33 pmLambert-St Louis
Aug 11
STL6:00 amLambert-St Louis
34h 05m
1 stop
SYD7:05 amSydney Kingsford Smith
$1,491

Air Canada flights from South Pacific to St. Louis

Our best Air Canada deals on South Pacific to St. Louis flight tickets
Air Canada
Jun 1
MEL8:30 pmMelbourne
54h 36m
3 stops
STL12:06 pmLambert-St Louis
Jun 8
STL2:15 pmLambert-St Louis
29h 50m
3 stops
MEL11:05 amMelbourne
$1,239
Air Canada
May 20
SYD9:20 amSydney Kingsford Smith
41h 46m
2 stops
STL12:06 pmLambert-St Louis
May 28
STL1:05 pmLambert-St Louis
27h 15m
2 stops
SYD7:20 amSydney Kingsford Smith
$1,411
Air Canada
Jun 1
SYD9:20 amSydney Kingsford Smith
26h 05m
2 stops
STL8:25 pmLambert-St Louis
Jun 8
STL1:05 pmLambert-St Louis
51h 15m
2 stops
SYD7:20 amSydney Kingsford Smith
$1,468

momondo Fare Finder

 
Customize your flight search to find flights from South Pacific to St. Louis that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated April 21, 2026.
Use the filters below to find and compare flights from South Pacific to St. Louis that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip
Quickest round-trip

MelbourneSt. Louis

MEL - STL

MELSTL

Melbourne

Mon 6/1

9:00 am-4:33 pm

2 stops22h 33m

Lambert-St Louis

Mon 6/8

5:18 pm-5:00 am

1 stop20h 42m

$1,188

MelbourneSt. Louis

MEL - STL

MELSTL

Melbourne

Mon 6/1

8:30 pm-12:06 pm

3 stops54h 36m

Lambert-St Louis

Mon 6/8

2:15 pm-11:05 am

3 stops29h 50m

$1,239

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Wed 5/20

9:20 am-12:06 pm

2 stops41h 46m

Lambert-St Louis

Thu 5/28

1:05 pm-7:20 am

2 stops27h 15m

$1,411

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Mon 6/1

9:10 am-11:56 pm

1 stop29h 46m

Lambert-St Louis

Mon 6/8

6:35 am-7:05 am

1 stop33h 30m

$1,447

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Mon 6/1

9:20 am-8:25 pm

2 stops26h 05m

Lambert-St Louis

Mon 6/8

1:05 pm-7:20 am

2 stops51h 15m

$1,468

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Thu 7/23

9:10 am-7:51 pm

2 stops25h 41m

Lambert-St Louis

Tue 8/11

6:00 am-7:05 am

1 stop34h 05m

$1,484

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Mon 7/27

9:15 am-11:53 pm

2 stops29h 38m

Lambert-St Louis

Wed 8/12

8:50 am-6:50 am

2 stops31h 00m

$1,502

MelbourneSt. Louis

MEL - STL

MELSTL

Melbourne

Mon 9/7

10:55 am-11:00 pm

2 stops27h 05m

Lambert-St Louis

Sun 9/27

11:45 am-8:15 am

2 stops29h 30m

$1,745

MelbourneSt. Louis

MEL - STL

MELSTL

Melbourne

Thu 10/8

9:45 am-11:05 pm

1 stop29h 20m

Lambert-St Louis

Mon 10/12

6:30 am-6:45 am

1 stop32h 15m

$1,906

LauncestonSt. Louis

LST - STL

LSTSTL

Launceston

Wed 5/13

6:10 am-4:57 pm

3 stops49h 47m

Lambert-St Louis

Sat 5/16

8:30 am-4:05 pm

2 stops40h 35m

$2,513

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to St. Louis from

How to get the cheapest flight ticket from South Pacific 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?

In general, September is the cheapest month to fly from South Pacific to St. Louis. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $948. The month of August is another great option to travel to St. Louis, with average flight prices from South Pacific averaging around $1,153.

Can stopping save me money on South Pacific to St. Louis flights?

You could potentially save up to 11% on your flight if you consider stops on a South Pacific to St. Louis flight.

Cheap South Pacific to St. Louis flight deals and tips

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

Fastest flight time

22h 09m

Direct flights

None
The fastest flight from South Pacific to St. Louis takes 22h 09m
There are no direct flights from South Pacific to St. Louis. There are no popular flight routes from South Pacific to St. Louis.
Search flight deals

Frequently asked questions about flying from South Pacific to St. Louis

  • When did momondo last update prices for flights from South Pacific to Lambert-St Louis Airport?

    Prices for flights from South Pacific to Lambert-St Louis Airport are refreshed on a daily basis.

  • How many operators does momondo search for flights from South Pacific to Lambert-St Louis Airport?

  • How old do you have to be to fly from South Pacific to Lambert-St Louis Airport?

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from South Pacific 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 license 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.

Best airlines flying from South Pacific to St. Louis

Compare and see reviews for airlines that fly from South Pacific to St. Louis with momondo
Airline
Rating
Free Cancellation
Price
United AirlinesPriceFrom $822Free CancellationRating
7.4
9,613 reviews
Search United Airlines flights

Traveling to a place near St. Louis?

Book flights to St. Louis if you plan to visit one of these locations
St. Charles
Chesterfield
Hermann
Fairview Heights
Maryland Heights
O'Fallon
Florissant
St. Peters
Collinsville
Wentzville
Alton
Fenton
Farmington
Festus
Clayton
Eureka
Litchfield
Edwardsville
Shrewsbury
Grafton

Why use momondo?

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

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from South Pacific to St. Louis. Millions of users trust and use momondo every year so you are in good hands.

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

momondo does allow users to show only those flights to St. Louis from South Pacific which offer a flexible booking policy as well as other useful filters and features.

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

Once all potential South Pacific to St. Louis flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

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

If you are simply researching potential flights to St. Louis, momondo offers a useful price alert feature which will track prices for flights to St. Louis from South Pacific and alert you when they change.

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