$542 Find Cheap Flights from South Pacific to St. Louis

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight to St. Louis departing on 4/17. 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
1 adult, Economy, 0 bags

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Everything you should know

Cheapest round-trip
$908
Overall average: $1,171
United Airlines
Thu 3/12Thu 3/19
MEL - STL • 2 stops
Cheapest one-way
$542
Delta
Fri 4/17
MEL - STL • 2 stops
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Flight Deals
Useful Info
Flight Deals

Cheap Flights from South Pacific to St. Louis

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from South Pacific to St. Louis that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from South Pacific to St. Louis

Thu, Mar 12 - Thu, Mar 19
United Airlines Logo
12:00 pm - 8:41 pm
MEL
-
STL
24h 41m
2 stops
United Airlines Logo
8:17 am - 9:00 am
STL
-
MEL
32h 43m
2 stops
$908United Airlines
Fri, Apr 3 - Tue, Apr 14
United Airlines Logo
10:30 am - 9:25 am
MEL
-
STL
38h 55m
2 stops
United Airlines Logo
4:49 pm - 8:15 am
STL
-
MEL
24h 26m
2 stops
$909United Airlines
Thu, Mar 12 - Thu, Mar 19
American Airlines Logo
12:00 pm - 11:58 pm
MEL
-
STL
27h 58m
1 stop
American Airlines Logo
6:50 pm - 5:00 am
STL
-
MEL
42h 10m
1 stop
$933American Airlines
Tue, Mar 3 - Mon, Apr 13
American Airlines Logo
11:20 am - 9:12 pm
SYD
-
STL
26h 52m
2 stops
American Airlines Logo
12:27 pm - 7:05 am
STL
-
SYD
27h 38m
2 stops
$1,039American Airlines
Tue, Mar 3 - Mon, Apr 13
Delta Logo
10:40 am - 7:39 pm
SYD
-
STL
25h 59m
2 stops
Delta Logo
12:23 pm - 6:50 am
STL
-
SYD
27h 27m
2 stops
$1,055Delta
Thu, Mar 12 - Thu, Mar 19
Delta Logo
1:15 pm - 11:25 pm
SYD
-
STL
26h 10m
2 stops
Delta Logo
12:28 pm - 6:05 am
STL
-
SYD
25h 37m
2 stops
$1,083Delta
Thu, Feb 19 - Mon, Feb 23
American Airlines Logo
11:20 am - 7:29 pm
SYD
-
STL
25h 09m
2 stops
American Airlines Logo
4:13 pm - 9:00 am
STL
-
SYD
23h 47m
2 stops
$1,195American Airlines
Fri, Feb 6 - Mon, Feb 9
Qantas Airways Logo
6:00 am - 4:14 pm
MEL
-
STL
27h 14m
2 stops
Qantas Airways Logo
11:55 am - 1:35 pm
STL
-
MEL
32h 40m
2 stops
$1,207Qantas Airways
Mon, Feb 23 - Mon, Mar 2
Lufthansa Logo
11:50 am - 9:40 pm
SYD
-
STL
26h 50m
2 stops
Lufthansa Logo
11:25 am - 7:00 am
STL
-
SYD
26h 35m
2 stops
$1,227Lufthansa
Thu, Feb 19 - Mon, Feb 23
Qantas Airways Logo
5:15 pm - 11:59 pm
LST
-
STL
47h 44m
2 stops
Qantas Airways Logo
6:38 am - 4:35 pm
STL
-
LST
40h 57m
2 stops
$1,613Qantas Airways
Useful Info

Good to know

Low seasonAugust
Cheapest flight$542
Best time to beat the crowds with an average 15% drop in price.
Most popular time to fly with an average 3% increase in price.
Flight from Melbourne to St. Louis

FAQs for booking flights from South Pacific to St. Louis

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

    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 South Pacific to St. Louis.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to St. Louis from South Pacific 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 South Pacific to St. Louis?

    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 St. Louis with an airline and back to South Pacific with another airline.

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

    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 St. Louis from South Pacific up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top airlines flying from South Pacific to St. Louis

 
Need help choosing which airline to fly with from South Pacific to St. Louis? 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.
7.5
Qantas AirwaysOverall score based on 978 reviews
7.2Entertainment
7.0Food
7.7Boarding
7.5Comfort
8.2Crew
Airline reviews

Hard to move and get out of my seat when the passenger in front is in recline position.

2.0 MediocreAnonymous, Jan 2026
MEL - LAX
Read more Qantas Airways reviews

Hard to move and get out of my seat when the passenger in front is in recline position.

Basic airline, aircraft and service. AA gets you from point A to B. My flight was delayed by 2 hours too.

No internet on flight, which makes log travels really hard.

My flight from Dallas to Sydney was cancelled. My entire trip was rerouted to include the following: Hartford to Washington DC Washington DC to JFK JFK to Auckland Auckland to Christchurch I paid for an aisle seat on the flight to Auckland and was asked if I would take a window seat to accommodate a family. The agent at the podium failed to mention that the family had a 3 month old baby and that a bassinet would be used during the 16 hour flight. The only way I could get out of my seat was to crawl under the bassinet of the sleeping baby. I think it is wrong that I was no given the choice to sit in another seat, that the agent knew what she was doing and chose to not properly disclose my seating arrangement. Terrible treatment.

they ran out of fruit for breakfast and so I just had a yogurt instead. other than that the flight was good

One of the best Qantas business flights I've had. Quality product

Poor! This flight was delayed 14 hours. There was no assistance in helping customers find other routes to their destination, nor any other kind of support. It was a chaotic experience. I'm not likely to fly with AA going forward.

We were upgraded and after just a short delay in attending to a safety check we were on our way. Would definately fly Qantas International on their Dreamliner again.

I tried to check in online but was unable to do so. I stood in line for nearly two hours to check in. American Airlines was understaffed. When I finally got to the kiosk to check in, I was still unable to check in. No AA staff was available to help. Finally one of the airport security agents who was helping passengers became of lack of AA Staff told me: “I think the reason you can’t check in is that you are starting your name with an upper case letter when you write it. Just write it with all lower case letters.” That did allow me to check in. HOW COULD ANYONE POSSIBLY KNOW THAT IF THEY USE AN INITIAL UPPER CASE LETTER TO SPELL THEIR OWN NAME, AA WOULD NOT ALLOW THEM TO CHECK IN?????? Then I had to wait in line over half an hour again to drop off my baggage. Although I arrived at the airport 3 hours early, by the time I got to the gate, they had already started boarding.

Traditional economy class. Not a full flight so spare seats. Food and drinks were good

Good crew. Boarding delays. Almost two hours wait for the bags in DC.

HORRIBLE, my initial flight was cancelled, they made me pay $200 extra dollars and that got cancelled as well! After 6 cancellations I decided to get a refund because I needed to get home to my babies. Out of $1000+ dollars they offered me only $40 in refund! Totally unacceptable! The flight that they cancelled I was able to fly it on another airline. I had to spend $400 on one way tickets just to get home! I’m still getting the runaround.

First class ticket gets you a choice of chips or nuts. . Just like economy Southwest. Also no screen in the seats. This is first class???!

Seated dude next to me even though lots of empty rows. But main thing was we sat on the tarmac after landing for 30 minutes because of, in the words of the dude who sat next to me, “operational incompetence”. We got changing directions about where to pick up gate checked bags. Pilot and flight attendant were awesome though.

It was a pretty standard flight... until the almost hour and a half spent on the taxi way. I get that the weather has been poor but the delay had nothing to do with the weather and more to do with a plane with several issues tying up the gate. I get that that happens from time to time but this has been EVERY flight I've been on for the past 5 years and I fly 3 to 5 times a year. This isn't just United... it's American, it's Delta. It's an issue with the entire industry. I work for UPS and packages on a cargo plane get better service than people do these days. Anymore I HATE flying.

I so appreciate the crew members on each flight of United. They are outstanding.

Flight arrived 30 min early and bag was waiting at the baggage pickup. United Club HNL was one of the nicest in the system

Unfortunately weather delayed our flight waiting for our plane to arrive and due to a little snow time was needed to deice the plane so departure was very delayed and I missed the connecting flight

Mean flight attendant. I wanted to reuse my plastic cup, but he (Matthew) said he can't for safety. I then said "I don't want water then" and he poured me a glass. I hope Matthew gets herpes and spends the rest of his life poor, lonely, and homeless.

Very good. Because of the delays with my previous flight, I missed my connection, but I was able to book another flight through the United app easily.

Traveling to a place near St. Louis?

Book flights to St. Louis if you plan to visit one of these locations
O'Fallon
Wentzville
Farmington
Eureka
Litchfield
Grafton
Shrewsbury
Glencoe

Everything you need to know for your flight to St. Louis

Information on the airport you'll fly into in St. Louis