STL

$840 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 20/2. 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
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Everything you should know

Cheapest return fare
$1,250
Overall average: $1,333
American Airlines
Thu 5/2Mon 9/2
BNE - STL • 1 stop
Cheapest one-way flight
$840
Multiple Airlines
Fri 20/2
SYD - STL • 3 stops
When to travel
August
Cheapest • 15% 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

Thu, 5 Feb - Mon, 9 Feb
American Airlines Logo
09:40 - 16:14
BNE
-
STL
22h 34m
1 stop
American Airlines Logo
14:38 - 05:00
STL
-
BNE
22h 22m
2 stops
$1,250American Airlines
Thu, 5 Feb - Mon, 9 Feb
American Airlines Logo
19:40 - 23:59
BNE
-
STL
20h 19m
1 stop
American Airlines Logo
07:04 - 05:00
STL
-
BNE
29h 56m
1 stop
$1,254American Airlines
Sat, 7 Mar - Sat, 14 Mar
United Airlines Logo
11:40 - 22:25
BNE
-
STL
26h 45m
1 stop
United Airlines Logo
19:00 - 06:30
STL
-
BNE
44h 30m
2 stops
$1,276United Airlines
Fri, 27 Mar - Sun, 5 Apr
United Airlines Logo
10:30 - 16:59
MEL
-
STL
22h 29m
2 stops
United Airlines Logo
11:15 - 08:15
STL
-
MEL
30h 00m
2 stops
$1,308United Airlines
Fri, 27 Mar - Sun, 5 Apr
United Airlines Logo
10:30 - 20:41
MEL
-
STL
26h 11m
2 stops
United Airlines Logo
18:35 - 07:30
STL
-
MEL
45h 55m
2 stops
$1,311United Airlines
Fri, 27 Mar - Sun, 5 Apr
Delta Logo
09:10 - 00:21
MEL
-
STL
31h 11m
2 stops
Delta Logo
18:59 - 07:50
STL
-
MEL
45h 51m
2 stops
$1,318Delta
Tue, 3 Feb - Tue, 17 Feb
Air Canada Logo
11:20 - 15:15
SYD
-
STL
44h 55m
2 stops
Air Canada Logo
08:41 - 09:35
STL
-
SYD
55h 54m
2 stops
$1,694Air Canada
Thu, 16 Jul - Mon, 3 Aug
Air Canada Logo
09:20 - 18:27
SYD
-
STL
48h 07m
2 stops
Air Canada Logo
05:20 - 07:20
STL
-
SYD
35h 00m
2 stops
$1,715Air Canada
Thu, 19 Feb - Mon, 23 Feb
Qantas Airways Logo
17:15 - 23:59
LST
-
STL
47h 44m
2 stops
Qantas Airways Logo
06:38 - 16:35
STL
-
LST
40h 57m
2 stops
$2,227Qantas Airways
Thu, 19 Feb - Mon, 23 Feb
Qantas Airways Logo
17:15 - 23:59
LST
-
STL
47h 44m
2 stops
Qantas Airways Logo
06:38 - 16:35
STL
-
LST
40h 57m
2 stops
$2,233Qantas Airways
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 February, where tickets cost $1,333 on average for one-way flights. On the other hand, the most expensive months are July and September, where the average cost of tickets from Australia is $2,868 and $2,261 respectively. For return trips, the best month to travel is August with an average price of $1,670.

Good to know – Book Cheap St. Louis Plane Tickets

Low seasonAugust
Cheapest flight$840
Best time to beat the crowds (14% less expensive on average)
Most popular time to fly (12% more expensive on average)
Flight from Sydney 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 973 reviews
7.0Food
8.2Crew
7.5Comfort
7.7Boarding
7.2Entertainment
Airline reviews

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....

10.0 ExcellentAnonymous, Jan 2026
SYD - SIN
Read more Qantas Airways reviews

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.

Not great. The inflight entertainment was all on an app, and I did not want to watch a film on my phone. Also, the range of options of films was limited.

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

by the time they got to our row, they were out of some of the food options. games and movies were great but maybe more game options like tetris or pac man would be great

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.

It was great. There were some issues prior to takeoff. The weather was poor so we had to go through deicing, and we were delayed a bit by the pilots' concern about one of the engines, but that's aviation. The pilots handled everything with aplomb, and kept us apprised

Reliable, nice crew, I fly often on that flight and I like it all.

I wish there were outlets to charge my iPhone. The crew was great; we had a female pilot who was great with explaining what was happening and delays,

The seats were comfortable and we had leg room. Great entertainment.

The flight crew where really good. Better then the crew from BNE to SFO

Delayed, toilets did not flush, pilot parked to far away from Gate

Was happy we finally got upgraded in 1st class. The seat getting old. The cushiness need some improvement.

Safe made to destination. Late to start at GVA for icy reasons but we fought our next fly.

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

It's kindof ridiculous that your system is even asking me about this since my flight was canceled and I wasn't rescheduled.

3 hr delay at the gate while they were doing maintenance. Next time, do not board passengers while maintenance is being performed

Digital check in is very poor with air canada compaired to other airlines

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
Collinsville

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

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