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STL (St. Louis) to DEN (Denver) Flights $134.4

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Cheap STL to DEN Flights

Prices found within past 7 days. Prices and availability subject to change. Additional terms may apply.

Interesting Facts About Flights from St. Louis to Denver (STL to DEN)

Question : How much should a trip from Saint Louis (STL) to Denver (DEN) cost?
Answer : Flight prices are fluctuating more for this route than the majority of routes in the United States, as they're ranging from $78 to $565. Remember, you can save by booking further in advance.

Question : What day of the week has the most flight time options?
Answer : When you’re flying from STL to DEN, the day with the most flight times is Monday, with 11 different options. However, with eight flight times, Saturday doesn't offer quite as many options when finding that perfect departure time.

Question : Looking for the shortest flight from STL to DEN?
Answer : Southwest Airlines can get you there in two hours and 15 minutes. For example, if you were to leave Saint Louis at 5:30 PM CDT, you would arrive in Denver at 6:45 PM MDT (remember, there is a one-hour time difference).

Question : How long do most people visit Denver?
Answer : Of course you're not most people, but if you were, you'd stay roughly five days.

Question : What is the cheapest day to fly in the next four weeks?
Answer : As of Jul 17th, the best day for booking to Denver (DEN) is Aug 17th. It costs $126, which is 44% below the average price to book the same route.

Question : If your plans are flexible, have you considered changing your departure day?
Answer : Monday is your cheapest day to fly in the month of August. Being flexible with your travel days garners even more savings during booking.

Question : Who's offering the cheapest round-trip flight to Denver International Airport (DEN) over the coming months?
Answer : Frontier Airlines is the leader in keeping costs down for their passengers over the next three months. Bookings are being made at just $78, which is quite a deal when compared to the more expensive bookings of $565.