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

Popular airlines from Lambert-St. Louis International Airport (STL) to Boulder, CO (WBU-Boulder Municipal)

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Flight from St. Louis to Boulder (STL - WBU) route information
Origin airport
Lambert-St. Louis Intl.
Destination airport
Boulder Municipal
Distance
1276 km

St. Louis to Boulder Flights

The easy way to book your flights from St. Louis to Boulder 

With Expedia, it’s simple to find and book flights to Boulder from St. Louis whether you’re traveling for business or pleasure. Enter your travel dates, hit search, and choose your flight from airlines that cover this route. There are nonstop flights to Boulder Municipal, too.  

Choose your preferred carrier and cabin class with the advanced search tool and select your ideal departure time. Then, if you want, you can see just nonstop or refundable flights. And if you’re traveling last minute, just enter the date to check out flights from St. Louis to Boulder today, tomorrow, or this week.  

 

Save dollars with cheap flights from Lambert-St. Louis Intl., STL to Boulder Municipal, WBU 

Sort your search results by price to find great deals on your flight from St. Louis to Boulder—you get all your cheapest options first. Grab yourself a bargain now—the lowest price on flights to Boulder from St. Louis currently is just rising to .  

Here are more money-saving tips: 

  • Fly in when flight prices are normally at their lowest 
  • Book about a month to 6 weeks before you travel for the best prices to Boulder  
  • Avoid peak season and weekends when flights can cost more
  • Early morning and late-night flights are sometimes cheaper, so try varying your travel times 
  • One surefire way to save money on your flight is to book your flight and hotel together with Expedia. Sometimes, the savings are so large that the flight is basically free! 

 

Reasons to choose Expedia for your flight to Boulder from St. Louis 

Whatever your destination, budget, or reason to travel, in just one quick search, you can choose from loads of flights, airlines, and cabin classes. The filters make it quick and easy to find your ideal flights, and if you choose one of the flexible options, you won’t be charged to change your flight. So book your flight to Boulder with Expedia today.

Frequently asked questions

How much is a flight from STL to WBU?
Round-trip flights from Lambert-St. Louis Intl. Airport (STL) to WBU start from . This price is based on fares advertised within the last 7 days on Expedia for flights departing within the next year --- book now to avoid missing out. Prices and availability are subject to change. Additional terms apply.
Do I need to pay a cancellation fee if I cancel my flight from Lambert-St. Louis Intl. Airport (STL) to WBU?
This can differ between airlines, as each has its own set of terms and conditions. Head to the Customer Service Portal, where you'll find simple instructions on how to cancel online.
How do I find cheap flights from STL to WBU that have flexible change policies?
Many carriers will allow you to reschedule your flight without a change fee. All you pay is the difference in the ticket price. When searching for Lambert Field to WBU flights, you'll find a "No change fees" box for you to tick.
How far is the flight from STL to WBU?
Forget about a movie marathon on this flight --- it's only 1,300 kilometres from St. Louis to Boulder. Sit down, order a snack and you'll be in Boulder before long.
Which airlines fly direct from Lambert Field to WBU?
Flying nonstop between Lambert-St. Louis Intl. Airport (STL) and WBU isn't possible at this time. However, you'll still be able to find a flight to Boulder with at least one stop.
Are Lambert Field to WBU flight tickets cheaper when they're purchased at the last minute?
Last-minute planners can sometimes find a bargain, with some super cheap airfares from Lambert Field to WBU popping up a few weeks before the departure date. If you'd rather book ahead of time, Expedia compares and updates the best flight deals frequently --- as early as 12 months in advance in some cases. It depends on the carrier though, as not all airlines release prices so far in advance.

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*Available to Expedia members.