Cheap Flights from St. Louis (STL) to St. Louis (SUS)

Popular airlines from St. Louis Lambert Intl. Airport (STL) to St. Louis, MO (SUS-Spirit of St. Louis)

Frequently asked questions

How much does a flight from Lambert-St. Louis Intl. Airport (STL) to Spirit of St. Louis Airport (SUS) cost?
Lock in a cheap one-way flight or cheap return flight from Lambert-St. Louis Intl. Airport (STL) to Spirit of St. Louis Airport (SUS) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight offers on this route.
What is the cheapest month to fly from Lambert-St. Louis Intl. Airport (STL) to Spirit of St. Louis Airport (SUS)?
Flying in is a good way to save, as it's the cheapest month for flights between STL and SUS. You'll often find the lowest fares during off-peak months.
What is the cheapest airline that flies from Lambert-St. Louis Intl. Airport (STL) to Spirit of St. Louis Airport (SUS)?
Expedia's filter tool lets you easily compare different airlines, departure times and fares all in one place. Tailor the search to your trip, then sort by "Price (lowest to highest)" to find out which carrier offers the cheapest STL to SUS flight.
How many flights per day from Lambert-St. Louis Intl. Airport (STL) to Spirit of St. Louis Airport (SUS)?
There aren't any daily direct flights available from Lambert-St. Louis Intl. Airport (STL) to Spirit of St. Louis Airport (SUS). But you can opt for flights with layovers. Filter your search on Expedia to include one or two stops, and you'll be on your way before you know it.
What day of the week has the most flights from STL to SUS?
Friday is generally the busiest day for flights, while Tuesday tends to be the quietest.* Just remember that flight schedules can change depending on various factors, including the airline and season.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Lambert-St. Louis Intl. Airport (STL) to Spirit of St. Louis Airport (SUS)?
Book a flight from Lambert-St. Louis Intl. Airport (STL) to Spirit of St. Louis Airport (SUS) that takes off before 3 PM to reduce the likelihood of delays. Departures after this hour have a 22% higher chance of being canceled, on average.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from Lambert-St. Louis Intl. Airport (STL) to Spirit of St. Louis Airport (SUS) last-minute?
Holding off until just before your departure to book a ticket from STL to SUS generally means paying more. Although you may find some last-minute discounts, there's no guarantee. Be flexible with your itinerary for a better chance of snagging a bargain.
Is it cheaper to book a STL to SUS flight and hotel package?
You'll typically save money by booking a STL to SUS flight and hotel package compared to booking separately. In fact, you could save hundreds of dollars by bundling with Expedia. And it's easy to manage it all in one convenient place. After selecting your preferred flights and accommodations, you can add extras like tours, car rentals and activities.
Can I cancel or change the date of my flight from Lambert-St. Louis Intl. Airport (STL) to Spirit of St. Louis Airport (SUS)?
Generally, it's possible to reschedule or cancel your STL to SUS flight. However, for bookings made more than 24 hours ago, additional charges may apply. Refer to your airline's policies in your itinerary to see what changes are allowed and if any costs are involved. You'll also find more details on our Customer Service portal.

Travel information

Origin airport
Lambert-St. Louis Intl.
Destination airport
Spirit of St. Louis
Distance
15 mi

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St. Louis to St. Louis Flights

The cheapest times to fly from St. Louis to St. Louis

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from St. Louis to St. Louis are during the month of . You can find some of the cheapest flights from St. Louis to St. Louis with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from St. Louis to St. Louis

Sunday is one of the best days to book for cheap flights from St. Louis to St. Louis: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from St. Louis to St. Louis

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from St. Louis to St. Louis in 2025. You can also book with separate airlines for your outbound and return journeys, from one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap St. Louis to St. Louis flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your St. Louis to St. Louis airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

St. Louis to St. Louis Flights

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*Available to One Key members.