Cheap Flights from Colorado Springs (COS) to St. Louis (SUS)

Popular airlines from Colorado Springs Airport (COS) to St. Louis, MO (SUS-Spirit of St. Louis)

Alternative airports near St. Louis

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Lambert-St. Louis Intl. STL. Cheapest option available. Average driving time to city center is 20 minutes. Flights from $470
STL
Lambert-St. Louis Intl.
Cheapest
Average driving time to city center20 min
Flights from $470

Frequently asked questions

How much does a flight from Colorado Springs Airport (COS) to Spirit of St. Louis Airport (SUS) cost?
Snag a cheap one-way flight or cheap return flight from Colorado Springs Airport (COS) to Spirit of St. Louis Airport (SUS) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight deals on this route.
What is the cheapest month to fly from Colorado Springs Airport (COS) to Spirit of St. Louis Airport (SUS)?
The cheapest month to fly from COS to SUS is , when demand is low. Off-peak season is typically when you'll find cheap fares for travel between these airports.
What is the cheapest airline that flies from Colorado Springs Airport (COS) to Spirit of St. Louis Airport (SUS)?
Expedia's filter tool lets you easily compare different airlines, flight durations 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 COS to SUS flight.
How many flights per day from Colorado Springs Airport (COS) to Spirit of St. Louis Airport (SUS)?
There aren't any daily nonstop flights from Colorado Springs Airport (COS) to Spirit of St. Louis Airport (SUS). But you can choose flights with layovers. Filter your search results on Expedia to include one or more stops, and you'll be cruising above the clouds before you know it.
What day of the week has the most flights from COS to SUS?
Friday is usually the busiest day for flights, while Tuesday tends to be the quietest.* Keep in mind that flight schedules can change depending on a range of factors, such as the time of year and carrier.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Colorado Springs Airport (COS) to Spirit of St. Louis Airport (SUS)?
To land at Spirit of St. Louis Airport (SUS) without delays, select a flight that takes off from Colorado Springs Airport (COS) before 3 PM. The likelihood of cancellations is 22% higher, on average, for departures after this hour.**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 Colorado Springs Airport (COS) to Spirit of St. Louis Airport (SUS) last-minute?
Booking your flight from COS to SUS shortly before your trip is generally more expensive. But if you're flexible with your departure dates and times, you could land a cheap last-minute fare.
Is it cheaper to book a COS to SUS flight and hotel package?
Compared with arranging flights and hotels separately, booking a COS to SUS flight and hotel package with Expedia could lead to significant savings. What's more, having everything in one easy place takes the hassle out of planning your trip. Simply pick your flights and choose from our extensive range of hotels, then tailor your trip with other add-ons like activities, tours and car rentals.
Can I cancel or change the date of my flight from Colorado Springs Airport (COS) to Spirit of St. Louis Airport (SUS)?
Typically, you're able to reschedule or cancel your COS to SUS flight. However, there may be additional charges, especially if your booking was made over 24 hours ago. Check your itinerary for the airline's fees and guidelines on flight changes, or if you need more details, visit our Customer Service portal.

Travel information

Origin airport
Colorado Springs
Destination airport
Spirit of St. Louis
Distance
756 mi

Book with confidence

Colorado Springs to St. Louis Flights

The cheapest times to fly from Colorado Springs 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 Colorado Springs to St. Louis are during the month of . You can find some of the cheapest flights from Colorado Springs to St. Louis with Expedia's search tool and vast selection of airlines.

 

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

Sunday is one of the best days to book for cheap flights from Colorado Springs 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 Colorado Springs 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 Colorado Springs 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 Colorado Springs 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 Colorado Springs 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.

 

Colorado Springs to St. Louis Flights

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*Available to One Key members.