Cheap flights from Colorado Springs to St. Louis from $122
This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Colorado Springs to St. Louis departing on 8/24. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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How to get the cheapest flight ticket from Colorado Springs to St. Louis
Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip
What is the cheapest month to fly to St. Louis?
In general, October is the cheapest month to fly from Colorado Springs to St. Louis. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $286. The month of November is another great option to travel to St. Louis, with average flight prices from Colorado Springs averaging around $300.
What is the cheapest day to depart on your flight to St. Louis?
The cheapest day to depart on your flight to St. Louis is on a Wednesday when prices can be found for as low as $224. This is often the case because there is less demand to fly during this day of the week. If your travel schedule is flexible, try to avoid departing on a Sunday because tickets tend to average around $321. These prices are subject to change though, so be sure to set up a Price Alert for flights to St. Louis.
What is the cheapest time of day to depart on your flight to St. Louis?
Flying to St. Louis from Colorado Springs in the evening is the least expensive time of day to depart. momondo users have found prices as low as $196 when looking at flights departing in the evening. At noon is when there is more demand to fly to St. Louis, so prices are often more expensive at around $300 per ticket.
How have Colorado Springs to St. Louis flight prices changed over time?
As of July 2025, prices for Colorado Springs to St. Louis flights are approximately 28% cheaper when compared to flights at the same time last year.
What is the cheapest airline that flies from Colorado Springs to Lambert-St Louis?
Southwest, Delta, and United Airlines are the most popular carriers operating from Colorado Springs to Lambert-St Louis
What airlines fly to St. Louis?
Frontier, United Airlines and Southwest are the top three most popular airlines that fly to St. Louis from Colorado Springs according to our data. Frontier is the first choice among our users, with 48% of people opting to fly with this airline when traveling to St. Louis. Keep in mind that there are 4 different airlines that fly to St. Louis on a routine basis, so you have a few additional options to choose from.
When to book flights from Colorado Springs to St. Louis
Cheap Colorado Springs to St. Louis (COS to STL) flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from Colorado Springs to St. Louis
How far is Colorado Springs to Lambert-St Louis by plane?
A flight from Colorado Springs to Lambert-St Louis will travel around 786.9 mi. A reasonable flight in good conditions will take 4h 10m.
When did momondo last update prices for flights from Colorado Springs Airport to Lambert-St Louis Airport?
Prices for flights from Colorado Springs Airport to Lambert-St Louis Airport are refreshed on a daily basis.
How many operators does momondo search for flights from Colorado Springs Airport to Lambert-St Louis Airport?
There are 3 operators available for flights from Colorado Springs Airport to Lambert-St Louis Airport as of July 2025.
How old do you have to be to fly from Colorado Springs Airport to Lambert-St Louis Airport?
The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Colorado Springs Airport to Lambert-St Louis Airport.
What documentation or ID do you need to fly to Lambert-St Louis Airport?
The necessary travel and health documents for your Lambert-St Louis Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.
What is the most popular airline from Colorado Springs to St. Louis?
momondo data reveals that the most frequently booked airline on the route from Colorado Springs to St. Louis is Southwest, representing 47% of all bookings. The subsequent popular airlines are United Airlines at 36% and American Airlines at 16%.
Best airlines flying from Colorado Springs to St. Louis
Compare and see reviews for airlines that fly from Colorado Springs to St. Louis with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom $260 | Free Cancellation | Rating 8.0 4,257 reviews | |||
| PriceFrom $266 | Free Cancellation | Rating 7.2 10,000 reviews | |||
| PriceFrom $266 | Free Cancellation | Rating 7.4 8,846 reviews |
Southwest Flights From Colorado Springs to St. Louis
Across 1 Southwest flight from Colorado Springs to St. Louis this week, the average price was $371, with the best Southwest deals starting from $260 round-trip. 4,257 users have rated Southwest on momondo, with an average score of 8.0/10.
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Why should I use momondo to find a flight deal from Colorado Springs to St. Louis?
momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Colorado Springs to St. Louis. Millions of users trust and use momondo every year so you are in good hands.
Can I find flights from Colorado Springs to St. Louis with flexible booking policies on momondo?
Flights from Colorado Springs to St. Louis with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.
How can momondo help me find flights from Colorado Springs to St. Louis?
momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Colorado Springs to St. Louis.
I’m not ready to book a flight from Colorado Springs to St. Louis right now. Can momondo alert me if prices change?
Of course. momondo tracks the price of Colorado Springs to St. Louis flights. All you need is a valid email address and we will do the rest; it is that quick and easy.