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

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Frequently asked questions

Is it cheaper to buy a plane ticket from Lambert Field to WBU last minute?
When it's time to book your flights, it's better to be prepared. While it may be possible to pick up a last-minute deal on a Lambert Field to WBU flight, tickets usually don't get cheaper as the date of departure nears. Based on flight pricing and demand studies in 2022, we have found that the sweet spot to book a domestic flight is between 28 – 35 days in advance. For international travel it's between three and four months.
What airports do you fly into for Boulder from St. Louis?
From St. Louis, you can journey to Boulder through Boulder, CO (WBU-Boulder Municipal), Denver Intl. Airport (DEN) and Broomfield, CO (BJC-Rocky Mountain Metropolitan). It's wise to check which terminal is the right option for you before making your decision. If you decide to land at Boulder, CO (WBU-Boulder Municipal), it's roughly 5 kilometers northeast of downtown. Use the dollars you save when booking your fare with Expedia to enjoy the city's well-known sights, such as University of Colorado Boulder and Folsom Field.
Can I change the date of my flight from STL to WBU?
You can quickly make changes to your Lambert Field to WBU ticket by logging in to the Expedia Trips portal. But before you make any adjustments, read over the fare rules in your itinerary to see what the carrier will let you do and what fees apply for changes. Some airlines charge a change fee per person, plus any difference in prices. However, if you booked in the last 24 hours, you may be able to cancel for free and arrange new flights. You can also head to our Customer Service portal for more information and to chat with our Virtual Agent.

Travel information

Origin airport
Lambert-St. Louis Intl.
Destination airport
Boulder Municipal
Distance
1276 km

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St. Louis to Boulder Flights

Whether you’re looking for a grand adventure or just want to get away for a last-minute break, flights from St. Louis to Boulder offer the perfect respite. Not only does exploring Boulder provide the chance to make some magical memories, dip into delectable dishes, and tour the local landmarks, but the cheap airfare means you won’t bust your budget. So no matter whether your ideal itinerary involves flying one way, non-stop, or round trip, you’re bound to find flights that match your schedule on Expedia, and at prices that won’t shock your wallet.

Bagging a cheap flight from St. Louis to Boulder may mean more dollars to spend on for one-of-a-kind souvenirs when you arrive, but it doesn’t mean you have to skimp on your travel experience, as Expedia offers a sizzling selection of cheap airlines that’ll put you in your happy place on their planes, whether that’s getting lost in a hair-raising airport thriller, dreaming on the passing landscape over a glass of bubbly, or jotting down your vacation bucket list at 38,000 feet. There’s also bound to be plenty of opportunities to snap a few photos of the high life that will make your friends green with envy. After all, enjoying the journey is part of the fun.

With so many affordable flights and so many wonderful adventures awaiting you, there’s no reason to put off booking a fantastic flight from to today. So don’t leave it to the last minute to make your dream trip a reality: pack your bags with your go-to travel accessories, put together your list of must-see attractions and can’t-miss activities, and get ready to broaden your horizons – with Expedia, the wonders of Boulder are only a plane trip away. Book your travel arrangements with us today!

If you would like to book flights to Boulder more flexibly many prefer to purchase one-way tickets with options to take different airlines. A one way ticket to Boulder is now!

St. Louis to Boulder Flights

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