Cheap Flights from St. Louis (STL) to Broomfield (BJC)

Popular airlines from St. Louis Lambert Intl. Airport (STL) to Broomfield, CO (BJC-Rocky Mountain Metropolitan)

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Alternative airports near Broomfield

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

Select flight to Denver Intl. DEN. Cheapest option available. Average driving time to city center is 36 minutes. Flights from $105
DEN
Denver Intl.
Cheapest
Average driving time to city center36 min
Flights from $105

Frequently asked questions

How much does a flight from Lambert-St. Louis Intl. Airport (STL) to Broomfield, CO (BJC-Rocky Mountain Metropolitan) cost?
Snag a cheap one-way flight or cheap return flight from Lambert-St. Louis Intl. Airport (STL) to Broomfield, CO (BJC-Rocky Mountain Metropolitan) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight deals on this route.
What is the cheapest month to fly from Lambert-St. Louis Intl. Airport (STL) to Broomfield, CO (BJC-Rocky Mountain Metropolitan)?
Planning your trip for can help you save, as it's the cheapest month for flights between STL and BJC. You'll often find the lowest prices during off-peak months.
What is the cheapest airline that flies from Lambert-St. Louis Intl. Airport (STL) to Broomfield, CO (BJC-Rocky Mountain Metropolitan)?
Expedia's filter tool lets you easily compare airlines, flight times and baggage options all in one place. Tailor the search to your trip, then sort by "Price (lowest to highest)" to find the carrier with the cheapest STL to BJC flight.
How many flights per day from Lambert-St. Louis Intl. Airport (STL) to Broomfield, CO (BJC-Rocky Mountain Metropolitan)?
There aren't any daily nonstop flights departing from Lambert-St. Louis Intl. Airport (STL) to Broomfield, CO (BJC-Rocky Mountain Metropolitan). But you can book flights with layovers. Filter your search on Expedia to include one or two stops, and you'll be soaring above the clouds in no time at all.
What day of the week has the most flights from STL to BJC?
Friday is typically the busiest day for flights, while Tuesday is often the quietest.* Keep in mind that flight schedules can change based on various factors, including the carrier and season.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Lambert-St. Louis Intl. Airport (STL) to Broomfield, CO (BJC-Rocky Mountain Metropolitan)?
Opt for a flight from Lambert-St. Louis Intl. Airport (STL) to Broomfield, CO (BJC-Rocky Mountain Metropolitan) that leaves before 3 PM to reduce the risk of cancellations and delays. Departures after this hour are on average 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.
What airports do you fly into for Broomfield from Lambert-St. Louis Intl. Airport (STL)?
Denver Intl. Airport (DEN) is the only airport in Broomfield with direct flights from Lambert-St. Louis Intl. Airport (STL). Browse the options and discover cheap fares on Expedia.
Is it cheaper to buy a plane ticket from Lambert-St. Louis Intl. Airport (STL) to Broomfield, CO (BJC-Rocky Mountain Metropolitan) last-minute?
Last-minute bookings from STL to BJC are generally more expensive. To secure the lowest prices, start searching for flights well in advance. That said, if you're flexible with your travel plans, you may find a cheap fare right before you leave.
Is it cheaper to book a STL to BJC flight and hotel package?
Compared with arranging flights and hotels separately, booking a STL to BJC flight and hotel package with Expedia could result in significant savings. What's more, having everything in one place will take the hassle out of travel planning. Simply secure your flights and choose from our extensive range of hotels, then customize your trip with extras like activities and car rentals.
Can I cancel or change the date of my flight from Lambert-St. Louis Intl. Airport (STL) to Broomfield, CO (BJC-Rocky Mountain Metropolitan)?
If you reserved your STL to BJC flight in the last 24 hours, you may be able to modify or cancel it without any fees. Depending on the airline and the type of ticket you have, additional charges may apply for changes beyond that time. Airline policies and contact information can be found in your itinerary or confirmation email. Or, visit our Customer Service portal for more information.

Travel information

Travel information

Origin airport
Lambert-St. Louis Intl.
Destination airport
Rocky Mountain Metropolitan
Distance
791 mi

Book with confidence

Book with confidence

St. Louis to Broomfield Flights

The cheapest times to fly from St. Louis to Broomfield

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

 

The best time to book a flight from St. Louis to Broomfield

Sunday is one of the best days to book for cheap flights from St. Louis to Broomfield: 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 St. Louis to Broomfield

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 St. Louis to Broomfield 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 St. Louis to Broomfield 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 St. Louis to Broomfield 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.

 

St. Louis to Broomfield Flights

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*Available to One Key members.