STL

$871 Find Cheap Flights 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 18/2. 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

KAYAK searches hundreds of travel sites at once for deals on flights to St. Louis

 
These are the airlines KAYAK users have selected most often from within our search results for flights to St. Louis, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results for flights to St. Louis, as well as popular online travel agencies
Travellers love KAYAK
41,299,237 searches in the past 7 days on KAYAK

Save 20% or moreCompare multiple travel sites with one search.

Track pricesNot ready to book? Create a price alert for when prices drop.

Free to useThere are no hidden charges or fees.

Filter your dealsChoose cabin class, free Wi-Fi and more.

Everything you should know

Cheapest return fare
$1,281
Overall average: $1,650
Delta
Sun 8/3Mon 23/3
MEL - STL • 2 stops
Cheapest one-way flight
$780
Delta
Wed 18/2
MEL - STL • 2 stops
When to travel
August
Cheapest • 13% price drop
December
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Start a new search
KAYAK searches hundreds of sites at once to find you the best travel deals.
We hope you love your trip to St. Louis!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights to St. Louis

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for return flights 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 return flight deals to St. Louis

Sun, 8 Mar - Mon, 23 Mar
Delta Logo
10:10 - 22:58
MEL
-
STL
29h 48m
2 stops
Delta Logo
07:15 - 07:00
STL
-
MEL
31h 45m
2 stops
$1,281Delta
Fri, 15 May - Sat, 6 Jun
Air Canada Logo
09:20 - 12:06
SYD
-
STL
41h 46m
2 stops
Air Canada Logo
07:30 - 07:20
STL
-
SYD
56h 50m
2 stops
$1,354Air Canada
Sat, 28 Mar - Sat, 4 Apr
American Airlines Logo
12:00 - 23:58
MEL
-
STL
27h 58m
1 stop
American Airlines Logo
16:13 - 05:00
STL
-
MEL
21h 47m
1 stop
$1,354American Airlines
Sun, 8 Mar - Mon, 23 Mar
American Airlines Logo
12:00 - 22:58
MEL
-
STL
27h 58m
1 stop
American Airlines Logo
11:46 - 05:00
STL
-
MEL
25h 14m
1 stop
$1,359American Airlines
Sat, 28 Mar - Sat, 4 Apr
Qantas Airways Logo
12:00 - 23:58
MEL
-
STL
27h 58m
1 stop
Qantas Airways Logo
11:46 - 05:00
STL
-
MEL
26h 14m
1 stop
$1,376Qantas Airways
Sat, 28 Mar - Sat, 4 Apr
Qantas Airways Logo
12:00 - 23:58
MEL
-
STL
27h 58m
1 stop
Qantas Airways Logo
11:46 - 06:45
STL
-
MEL
27h 59m
2 stops
$1,381Qantas Airways
Tue, 30 Jun - Wed, 22 Jul
United Airlines Logo
09:30 - 00:29
SYD
-
STL
29h 59m
2 stops
United Airlines Logo
19:06 - 06:55
STL
-
SYD
20h 49m
1 stop
$1,504United Airlines
Mon, 29 Jun - Wed, 22 Jul
United Airlines Logo
10:20 - 17:53
SYD
-
STL
22h 33m
1 stop
United Airlines Logo
19:06 - 06:55
STL
-
SYD
20h 49m
1 stop
$1,511United Airlines
Sun, 8 Mar - Mon, 23 Mar
Multiple Airlines Logo
06:05 - 14:28
MEL
-
STL
25h 23m
2 stops
Multiple Airlines Logo
16:13 - 05:00
STL
-
MEL
20h 47m
1 stop
$1,541Multiple Airlines
Mon, 10 Aug - Sat, 22 Aug
Multiple Airlines Logo
22:15 - 14:02
BNE
-
STL
54h 47m
2 stops
Multiple Airlines Logo
19:32 - 20:00
STL
-
BNE
33h 28m
2 stops
$1,988Multiple Airlines
Booking Insights

KAYAK's insights & trends for flights to St. Louis

Get data-powered insights and trends into flights to St. Louis to help you find the cheapest flights, the best time to fly and much more.

What is the cheapest month to fly to St. Louis?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for flights to St. Louis, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights to St. Louis is November, where tickets cost $1,166 on average for one-way flights. On the other hand, the most expensive months are July and April, where the average cost of tickets from Australia is $2,739 and $2,306 respectively. For return trips, the best month to travel is August with an average price of $1,630.

Good to know – Book Cheap St. Louis Plane Tickets

Low seasonAugust
Cheapest flight$780
Best time to beat the crowds (9% less expensive on average)
Most popular time to fly (12% more expensive on average)
Flight from Melbourne to St. Louis

When to book flights to St. Louis

Are your dates flexible? Find out the best times to travel to St. Louis based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated return price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or returns with a duration up to 40 days. The information is for flights to St. Louis based on your location. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs - booking St. Louis flights

  • How far is Lambert-St Louis Airport from central St. Louis?

    The distance between Lambert-St Louis Airport and the city centre of St. Louis is 20 km.

  • What is the name of St. Louis’s airport?

    There is only 1 airport in St. Louis, called Lambert-St Louis Airport (STL). It can also be referred to as Lambert Field, Lambert-St Louis, St. Louis Lambert, or St. Louis Lambert Intl.

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

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

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

  • What is the Hacker Fare option on flights 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 with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight 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 up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Top tips for finding cheap flights to St. Louis

  • Enter your preferred departure airport and travel dates into the search form above to unlock the latest St. Louis flight deals.

Reviews of the top 3 airlines flying to St. Louis

 
See real verified KAYAK customer reviews for airlines flying to St. Louis. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline from Australia to St. Louis. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with 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 989 reviews
8.1Crew
7.7Boarding
7.0Food
7.2Entertainment
7.5Comfort
Airline reviews

Flight arrived late with no one to help over 30 people rebook. I slept at the airport.

2.0 MediocreKelsey, Feb 2026
MIA - LAX
Read more Qantas Airways reviews

Flight arrived late with no one to help over 30 people rebook. I slept at the airport.

Business seats not as comfortable or private as most competitors (e.g. Qantas was outstanding), and movie selection was much more limited than Qantas or United has been recently

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

It was a good flight and no complaints. It just wasn't anything that was better than any other flight.

The crew were wonderful - if only the customers were as well behaved as the attendants!! Ha ha! If you could just talk to God and ask for less turbulence next time.... Juuuuust kidding....

Flight was canceled. I was not alerted. It was only kayak that alerted me

Flight was 2.5 hours late leaving. We spent 50 minutes of that sitting on the plane with no explanation. They did reduce the time in the air so we arrived a little less late which was something. The cheese and crackers were okay but the wine was terrible.

Excellent as always, I won't fly to Australia, and back to the US on any other airline. The flight crew is always top notch, and have a way to make one feel extra special. Thank you for your service, I would rate Qantas Airways a 10+.

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.

Very old flight - time to retire it for newer airplanes

2+ hours delayed Outlet in row 12 did not work Tv monitors did not work Lights kept off the entire flight for at 5pm-7pm flight

No real complaints. The in flight food was much better than I expected. The in flight entertainment was excellent.

From pre boarding to flight attendant, crew and baggage handler, excellent. Didn’t lost my luggage like West jet.

Very disappointing given gate agent behavior. Filed a formal complaint with United.

Do not like the size of the overhead bin. I think staff should monitor the size of suitcases that are being carried on by passengers to ensure they meet the size requirement.

Crew was great (professional, attentive, prompt). Snacks for 4 hrs flight is deplorable.

Flight delayed. WiFi connectivity very poor if not existant. Last minute arrival forced me to run to catch my connection.

Both of my flights arrived early and check in process was smooth

Terrible. No customer service, no food, no drinks on a 6 hour premier economy booking.

they were super helpful. Agents at the desk got me on an earlier flight and I was able to get home several hours earlier.

This is a great non-stop YVR-MIA. Very comfortable plane, and no transfer through a city that gets major winter weather!

Terrible…. Reported missing luggage’s with injectable meds that needed refrigeration. Yet, delivery could not be expedited. Luggage’s were delivered 5 days after arrival. The meds were useless as ice pack had melted. So disappointed!!!

Air Canada’s problems are not staff related by and large, no. The problem is tiny jets between the U.S. and Canada - yes, believe it or not they are still “international” (just ask our own Mango Maniac in power in the U.S.). The little aisle is compounded by a design flaw of a “dog leg” starting at seat 12. Woe be unto you if you sit here as passengers and attendants do not have sufficient room to not hit you in the face with backpacks. One thing I will say very positively about Air Canada is you still provide pillows and blankets on transcontinental flights to all, not just the elites. Your tiny improperly designed jets are also a problem flying city to city within Canada also. One can only say you remind us of a “Jet Blue” or “Spirit” experience. Also your luggage space is downright Byzantine! We will endeavor to avoid you and use other U.S. carriers, albeit charging more.

Terrible canceled flight and lost my luggage. Flew me to Halifax. Tgat flight was delayed, had to spend night in airport chair.

Better entertainment & food options more may be adding chicken option or on vegetarian side good quality pasta

My seat was not comfortable. Flight was smooth. Regretfully we had two delays before takeoff

Amazing service, with enthusiastic crew members, and some breathtaking views of Vancouver. No IFE though, as it is only a 1 hour flight on a regional Turboprop jet.

They are very proactive and made our boarding easy and always notified us about any changes well in advance.

My seat was covered in vomit and I will be reaching out to Air Canada

Travelling to a place near St. Louis?

Book flights to St. Louis if you plan to visit one of these locations
Maryland Heights
Festus
St. Charles
Fairview Heights
Edwardsville
Chesterfield

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

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