Cheap Flights to Boulder

View AU$372 flight on Wed, 25 Feb 2026Opens in a new window

Popular airlines to Boulder

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Cheap Tickets to Boulder

These prices were available within the past 7 days. Prices quoted are per person, return, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Mon, 30 Mar - Tue, 14 Apr
FSD
Sioux Falls
BTM
Butte
AU$495 Return, found 22 hours ago
AU$495
Return
found 22 hours ago
Select United flight, departing Mon, 30 Mar from Sioux Falls to Butte, returning Tue, 14 Apr, priced at AU$495 found 22 hours ago
United
Tue, 10 Feb - Fri, 27 Feb
FSD
Sioux Falls
BTM
Butte
AU$503 Return, found 22 hours ago
AU$503
Return
found 22 hours ago
Select United flight, departing Tue, 10 Feb from Sioux Falls to Butte, returning Fri, 27 Feb, priced at AU$503 found 22 hours ago
United
Tue, 17 Mar - Sat, 4 Apr
FSD
Sioux Falls
BTM
Butte
AU$548 Return, found 22 hours ago
AU$548
Return
found 22 hours ago
Select United flight, departing Tue, 17 Mar from Sioux Falls to Butte, returning Sat, 4 Apr, priced at AU$548 found 22 hours ago
United
Tue, 17 Mar - Thu, 2 Apr
FSD
Sioux Falls
BTM
Butte
AU$563 Return, found 22 hours ago
AU$563
Return
found 22 hours ago
Select United flight, departing Tue, 17 Mar from Sioux Falls to Butte, returning Thu, 2 Apr, priced at AU$563 found 22 hours ago
Delta
Wed, 1 Apr - Fri, 17 Apr
FSD
Sioux Falls
BTM
Butte
AU$570 Return, found 22 hours ago
AU$570
Return
found 22 hours ago
Select Delta flight, departing Wed, 1 Apr from Sioux Falls to Butte, returning Fri, 17 Apr, priced at AU$570 found 22 hours ago

Boulder Flights

Have the time of your life in Boulder

Flying to Boulder is now easier than ever when you use Expedia to book your trip. We’ve got an extensive catalogue of Boulder flight deals, giving you the greatest number of options to choose from. Whether you prefer to fly on weekdays or weekends, in the morning or at night, a quick search on Expedia.com.au will help you find cheap tickets to Boulder in seconds. We even make it simple for you to stick with a certain airline if you’re trying to rack up frequent flyer points.

Tips for flying and packing light

If it’s been a while since you’ve travelled, you might be due for a refresher when it comes to flying. That’s where our helpful blog, Out There Starts Here, comes in. Wondering whether to pack for fine dining or more casual eats? Or whether you really need to bring a jacket? Written by seasoned travel experts, the articles on our blog provide you with the latest details about certain destinations, so you know just what to expect. Check out some of our recent articles for the smartest ways to see the sights.

Fly for less when you bundle airfare and accommodation

Our already low airfares are even more affordable when you bundle your flights with a stay at one of the hotels in Boulder. By booking all of your travel plans with us, you’ll save time and money, and enjoy the convenience of having all of your arrangements in one place.

Get the power of planning in the palm of your hand

Booking your trip to Boulder, Montana has never been easier than when you use our mobile app to plan your dream getaway. The Expedia App is available on both Android and iOS, allowing you to reserve flights and hotels at any time of day, no matter what kind of phone you use. You’ll also get exclusive offers, receive flight updates, and can earn extra points. Wherever you are, the Expedia App helps you get where you want to be.

Join the Expedia Rewards Program

If you enjoy the finer things in life, sign up for our rewards program to receive exclusive benefits when you book with us. Expedia Rewards opens the door to member-only deals, +VIP Access hotel benefits, and earning Expedia Rewards points, that you can redeem your way. You’ll also get access to Unreal Deals that could save you the price of a plane ticket to Boulder when bundled with your accommodation.

What are you waiting for?

Expedia.com.au helps you find cheap flights to Boulder AU$495. So why wait another second to begin planning your trip? Start your search right now, and you could be boarding the next Boulder-bound flight. Bon voyage!

Frequently asked questions

What is the name of Boulder's airport?
Gallatin Field Airport (BZN) is the most popular airport in Boulder.
What airport is best to fly into Boulder?
Travellers flying into Boulder can opt to land at two major airports. Gallatin Field is 88 kilometres away from the downtown area. BTM is 40 kilometres away.
How many airlines fly to Boulder?
There are a total of 7 air carriers connecting Boulder with 16 airports around the world.
Which airlines fly to Boulder?
United Airlines and Southwest Airlines offer the largest proportion of flights to Boulder. One of the most common ways to get there is on a United Airlines flight from Denver.
How many nonstop flights are there to Boulder?
Organising an amazing Boulder adventure is child's play when there are 207 direct flights every week to choose from.
Where are the most popular flights to Boulder departing from?
The most popular flights to Boulder depart from Denver, Salt Lake City and Seattle airports.
How long is the flight to Boulder Airport?
If it's Denver you're leaving behind, you'll be midair for around 1 hour and 57 minutes before you touchdown in Boulder. Airport to airport from Salt Lake City generally takes 1 hour and 31 minutes and from Seattle, the flight time is 1 hour and 36 minutes.
How to book the cheapest flight to Boulder?
If you'd like to save some cash on your trip to Boulder, then listen up! As every seasoned jet-setter knows, don't leave booking until the last minute. Airfares are usually highest close to the departure date. Another fantastic way to nab a bargain is to research all options. If where you're headed has more than one airport, don't forget to research the cost of flying into a smaller terminal. Last but not least, be ready to book quickly if you find a real bargain. It might not be available for too long! With a bit of know-how and a little good fortune, the ideal airfare will be yours.
Do you have any tips for my flight to Boulder?
No matter where you're coming from, flying can be a seamless experience if you prepare well enough. Take a peek at these essential travel tips that will help get your Boulder holiday started on the right note. What to pack in your hand luggage:

  • The secret to having an amazing travel experience is to pack in advance. So, let's start with the basics: passport, boarding pass, credit cards and daily medications. Next, bring items that'll help keep you busy, like some electronic devices or a few magazines. You'll also want to pack your chargers, a neck pillow and a pair of noise-cancelling headphones. Last but not least, be sure to squeeze in toiletry items like a toothbrush, cleansing wipes and a clean T-shirt.

Do not pack the following items in your hand luggage:

  • Pack all your full-sized bottles of shampoo and hair gel in your checked baggage. Any liquids or gels in your carry-on bag larger than 3.4 ounces (100 millilitres) won't be allowed on. Sharp or pointed objects, like your treasured pocket knife, and products which are flammable or explosive, such as aerosol cans, spray paint and gasoline, are also not allowed.

What to wear on a flight:

  • Your aim here is to be as comfortable as possible. Pick easy-to-remove footwear, dress in loose, natural-fibre clothing and remember to take a sweater in case you get cold in the cabin.
  • Most travellers have heard about deep vein thrombosis (DVT), a blood clot condition caused by prolonged periods of sitting. To lessen your risk on board, drink plenty of water, consider wearing compression tights or socks and do gentle foot and leg exercises in your seat.

How to get through airport security fast when flying to Boulder?
The trick is to be well prepared before you reach the security gate. That way, you'll be hopping onto that plane to Boulder in next to no time. Follow these tips and get your holiday off to a great start:

  • Your passport and travel documents will need to be presented to security personnel. Have them close by so you don't hold up the queue.
  • Time to strip down. Well sort of. Your coat, belt, keys and other contents of your pockets, like coins, will need to go on a tray through the X-ray machine. Make the whole process faster by removing them before your turn arrives.
  • All electronic gadgets, including your tablet and phone, must also be scanned separately.
  • Any liquids or gels, such as shampoo or hand cream, that you want to bring on board must be no greater than 3.4 ounces (100 millilitres). They must also all fit inside a quart-size (one litre), zip-lock bag.
  • Choosing your footwear wisely can save you several valuable minutes. Boots and bulky shoes are often required to be removed and X-rayed separately. Lightweight sneakers usually aren't.
  • Take all prohibited items out of your carry-on bag. If you have any sharp or pointed objects, pack them in your checked baggage. They won't be allowed in the cabin.

Flights to Boulder information
Destination airport
Bert Mooney
Destination airport IATA code
BTM
Destination city name
Butte
Return price
AU$494

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