Cheap Flights to Boulder

View ₩303,100 flight on Wed, Jul 23, 2025Opens in a new window

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How much is the cheapest flight to Boulder?

Prices were available within the past 7 days and start at ₩303,100 for one-way flights and ₩673,400 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Tue, Jul 22 - Tue, Jul 29
IAD
Washington
HLN
Helena
₩673,400 Roundtrip, found 3 days ago
₩673,400
Roundtrip
found 3 days ago
Select United flight, departing Tue, Jul 22 from Washington to Helena, returning Tue, Jul 29, priced at ₩673,400 found 3 days ago
Delta
Tue, Jul 22 - Tue, Jul 29
DCA
Washington
HLN
Helena
₩696,300 Roundtrip, found 3 days ago
₩696,300
Roundtrip
found 3 days ago
Select Delta flight, departing Tue, Jul 22 from Washington to Helena, returning Tue, Jul 29, priced at ₩696,300 found 3 days ago
Delta
Wed, Jul 23 - Mon, Jul 28
BWI
Baltimore
HLN
Helena
₩704,300 Roundtrip, found 19 hours ago
₩704,300
Roundtrip
found 19 hours ago
Select Delta flight, departing Wed, Jul 23 from Baltimore to Helena, returning Mon, Jul 28, priced at ₩704,300 found 19 hours ago
Delta
Wed, Jul 23 - Mon, Jul 28
IAD
Washington
HLN
Helena
₩710,100 Roundtrip, found 19 hours ago
₩710,100
Roundtrip
found 19 hours ago
Select Delta flight, departing Wed, Jul 23 from Washington to Helena, returning Mon, Jul 28, priced at ₩710,100 found 19 hours ago
Delta
Wed, Jul 23 - Mon, Jul 28
BWI
Baltimore
HLN
Helena
₩711,500 Roundtrip, found 19 hours ago
₩711,500
Roundtrip
found 19 hours ago
Select Delta flight, departing Wed, Jul 23 from Baltimore to Helena, returning Mon, Jul 28, priced at ₩711,500 found 19 hours ago

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.

Frequently asked questions

What is the name of Boulder's airport?
Gallatin Field Airport (BZN) is the only airport near Boulder.
What airport is best to fly into Boulder?
Flying to Boulder means jumping off the plane at either Gallatin Field or Bert Mooney Airport. The first is 88 kilometers away from the center of the city. The second is 40 kilometers away.
How many airlines fly to Boulder?
Boulder is serviced by 6 airlines from 11 airports across the globe.
Which airlines fly to Boulder?
Southwest Airlines and United Airlines offer the most flights to Boulder. One of the most common ways to get there is with a Southwest Airlines flight leaving from Denver.
How many nonstop flights are there to Boulder?
Organizing an exciting Boulder adventure is a cinch when there are 165 direct flights every week to select from.
Where are the most popular flights to Boulder departing from?
Flights to Boulder from Denver, Salt Lake City and Seattle airports are always popular.
How long is the flight to Boulder Airport?
Which city you depart from determines how much of the in-flight entertainment you'll get to see. From Denver to Boulder, the average flight time is 1 hour and 46 minutes. From Salt Lake City it's around 1 hour and 22 minutes, and from Seattle it's 1 hour and 36 minutes.
How to book the cheapest flight to Boulder?
We all know those travelers who somehow pick up extremely cheap fares whenever they fly. Want to know how to do it for your Boulder vacation? Don't wait until the very last minute to lock in your flight. Don't stop there, though. Do some research and check if there are a few airports at your destination. Ticket prices often differ depending on the airport you fly into. Make sure you compare fares across air carriers as well. And finally, remember that it's first in, best dressed. Know what a typical airfare costs and have your credit card ready to secure your ticket as soon as you see an unbeatable bargain. The best deals don't last long.
How to survive the flight to Boulder?
Wherever you're coming from, flying can be a seamless experience if you've planned ahead. Follow these handy hints that will help get your Boulder escape started on the right note.What to pack in your hand luggage:
  • A plane ride can be a pleasure if you carry the right gear. First of all you'll need basic toiletries, such as a toothbrush and some deodorant, a spare pair of socks and a magazine or two. Next, leave space in your carry-on bag for your laptop, a charger, your important medications and perhaps a comfy neck pillow too. Last, but definitely not least, don't forget to take your passport, travel docs and some money.

Do not pack the following items in your hand luggage:
  • Leave all your full-sized bottles of shampoo and hairspray in your checked luggage. Any liquids in your carry-on suitcase larger than 3.4 ounces (100 milliliters) will be confiscated. Sharp or pointed objects, like your treasured Swiss Army knife, and products which are flammable or explosive, such as flares, chemicals agents and matches, are also restricted.

What to wear on a flight:
  • The answer to a comfortable flight is as simple as your choice of clothes. Prepare yourself for varying temperatures by layering up. That way you'll stay nice and warm if the cabin gets chilly. Shoes like high heels and sandals are best left in your checked suitcase. Instead, go for flat, closed-toed footwear like slip-ons. Your feet will thank you later.
  • Most travelers have heard about deep vein thrombosis (DVT), a blood clotting condition caused by reduced mobility or inactivity. There are numerous ways to minimize your risk. Wear a quality pair of compression tights or socks, drink lots of water often and get your legs and feet moving. Do a lap or two of the cabin or try out some simple stretches in your seat.

How to get through airport security fast when flying to Boulder?
A little pre-planning before your flight can make your getaway to Boulder a piece of cake. Read through our handy tips for a speedy journey past security:
  • First things first. Your travel documents and passport will need to be inspected by airport security personnel. Keep them at hand so you don't have to dig around for them.
  • The X-ray machine comes next. Remove anything on you that is likely to set off the scanner's alarm. This includes items like earphones or headphones, as well as your coat or jacket. They'll all need to go on the X-ray conveyor belt.
  • Electronic devices like phones and laptops will also have to go on a tray to be scanned. Don't worry though, you'll be back online in no time.
  • Want to bring along your favorite cologne or perfume? No problem. As long as it's in a container no larger than 3.4 ounces (100 milliliters) and it's stored in a zip-lock bag, it's fine to bring with you in your carry-on luggage.
  • There's a chance you'll be required to take your shoes off for scanning, so wearing slip-on sneakers is always a wise idea.
  • Airlines will not allow any sharp objects to come on board with you. If you must bring these kinds of items, pack them safely in your checked baggage.

Flights to Boulder information
Destination airport
Helena Regional
Destination airport IATA code
HLN
Destination city name
Helena
Roundtrip price
₩673,400
*Available to Expedia members.