Cheap Flights to Boulder

View ₩842,100 flight on Sun, Dec 27, 2026Opens in a new window

Popular airlines to Boulder

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How much is the cheapest flight to Boulder?

Prices were available within the past 7 days and start at ₩842,100 for one-way flights and ₩1,345,500 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Sun, Dec 27 - Thu, Dec 31
IAH
Houston
HLN
Helena
₩1,345,500 Roundtrip, found 21 hours ago
₩1,345,500
Roundtrip
found 21 hours ago
Select United flight, departing Sun, Dec 27 from Houston to Helena, returning Thu, Dec 31, priced at ₩1,345,500 found 21 hours ago
United
Sun, Dec 27 - Thu, Dec 31
IAH
Houston
HLN
Helena
₩1,353,700 Roundtrip, found 21 hours ago
₩1,353,700
Roundtrip
found 21 hours ago
Select United flight, departing Sun, Dec 27 from Houston to Helena, returning Thu, Dec 31, priced at ₩1,353,700 found 21 hours ago
Delta
Sun, Dec 27 - Thu, Dec 31
IAH
Houston
HLN
Helena
₩1,365,500 Roundtrip, found 21 hours ago
₩1,365,500
Roundtrip
found 21 hours ago
Select Delta flight, departing Sun, Dec 27 from Houston to Helena, returning Thu, Dec 31, priced at ₩1,365,500 found 21 hours ago
Delta
Sun, Dec 27 - Thu, Dec 31
IAH
Houston
HLN
Helena
₩1,373,700 Roundtrip, found 21 hours ago
₩1,373,700
Roundtrip
found 21 hours ago
Select Delta flight, departing Sun, Dec 27 from Houston to Helena, returning Thu, Dec 31, priced at ₩1,373,700 found 21 hours ago
Delta
Sun, Dec 27 - Thu, Dec 31
IAH
Houston
HLN
Helena
₩1,434,400 Roundtrip, found 21 hours ago
₩1,434,400
Roundtrip
found 21 hours ago
Select Delta flight, departing Sun, Dec 27 from Houston to Helena, returning Thu, Dec 31, priced at ₩1,434,400 found 21 hours ago

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?
Travelers flying into Boulder can opt to land at two major airports. Gallatin Field is 88 kilometers away from the downtown area. BTM is 40 kilometers 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?
Organizing 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 vacation 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-canceling 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 milliliters) 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-fiber clothing and remember to take a sweater in case you get cold in the cabin.
  • Most travelers 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 vacation 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 milliliters). They must also all fit inside a quart-size (one liter), 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.

Book with confidence

Searching for cheap flights to Boulder? No travel company presents more choices than Expedia if you're looking to compare flights to Boulder. With more airlines, cheaper flights, fewer stops, and more departure and arrival times travellers should ensure they search on Expedia before any holiday to Montana. Expedia provides the cheapest flights to many destinations in Montana and you may find even greater savings if you combine your flight with a hotel stay in Boulder.

Travel information

Destination airport
Helena Regional
Destination airport IATA code
HLN
Destination city name
Helena
Roundtrip price
₩1,345,500
*Available to Expedia members.