Cheap Flights from Boulder (WBU) to St. Louis (STL)

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Frequently asked questions

How much does a flight from Boulder, CO (WBU-Boulder Municipal) to Lambert-St. Louis Intl. Airport (STL) cost?
Discover the latest flight deals from WBU to STL by entering your preferred travel dates and searching on Expedia. Easily compare prices by departure date if you have flexibility with your schedule and use handy filters to explore prices for your preferred journey. As a member of One Key™, our free loyalty program, you can use Price Tracking to watch fares and receive notifications if prices go up or down.
What is the cheapest month to fly from WBU to STL?
The cheapest flights from WBU to STL are usually during off-peak season, when demand is lower. To save money, avoid flying during public holidays, school breaks and major local events.
Which airlines fly direct from Boulder, CO (WBU-Boulder Municipal) to Lambert-St. Louis Intl. Airport (STL)?
You can’t catch a nonstop flight from Boulder, CO (WBU-Boulder Municipal) to Lambert-St. Louis Intl. Airport (STL). However, you can easily travel to St. Louis without any layovers by leaving from Denver Intl. Airport (DEN).
What is the cheapest airline that flies from WBU to STL?
Use the filter tool on Expedia to compare airlines and find the cheapest carrier that’ll take you from WBU to STL. Sort your results by “Price (lowest to highest)” to snap up a great deal.
How many flights per day from Boulder, CO (WBU-Boulder Municipal) to Lambert-St. Louis Intl. Airport (STL)?
There aren’t any daily nonstop flights from Boulder, CO (WBU-Boulder Municipal) to Lambert-St. Louis Intl. Airport (STL). But you can book flights with layovers. Filter your search results on Expedia to include one or two stops, and you’ll be soaring above the clouds before you know it.
What day of the week has the most flights from WBU to STL?
Friday is usually the busiest day for flights, while Tuesday tends to be the quietest.* Just remember that flight schedules can change depending on a range of factors, including the time of year and airline.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Boulder, CO (WBU-Boulder Municipal) to Lambert-St. Louis Intl. Airport (STL)?
To avoid possible delays on the Boulder, CO (WBU-Boulder Municipal) to Lambert-St. Louis Intl. Airport (STL) route, fly before 3 PM. Later flights are 22% more likely to be canceled.**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 Boulder, CO (WBU-Boulder Municipal) to Lambert-St. Louis Intl. Airport (STL) last-minute?
Holding off until just before your departure to book a flight from WBU to STL generally means paying more. While you may come across some last-minute offers, they aren’t always guaranteed. Be flexible with your travel plans for the best chance of scoring a bargain.
Is it cheaper to book a WBU to STL flight and hotel package?
Securing a WBU to STL flight and hotel package is generally cheaper than booking separately. With Expedia, you can enjoy the convenience of organizing your travels in one place. Select from our extensive range of hotels and then add activities, car rentals and flights to your booking. Bundle it all together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Boulder, CO (WBU-Boulder Municipal) to Lambert-St. Louis Intl. Airport (STL)?
In most cases, you can modify or cancel your WBU to STL flight. However, there may be additional charges, especially if you booked more than 24 hours ago. Double-check your itinerary for the airline’s fees and policies on flight changes, or if you want further information, head to our Customer Service portal.
*Available to One Key members.