Cheap Flights to Roundup

View AU$128 flight on Sat, 24 Jan 2026Opens in a new window

Popular airlines to Roundup

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Cheap Tickets to Roundup

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.

Alaska Airlines
Thu, 8 Jan - Thu, 15 Jan
SEA
Seattle
BIL
Billings
AU$271 Return, found 19 hours ago
AU$271
Return
found 19 hours ago
Select Alaska Airlines flight, departing Thu, 8 Jan from Seattle to Billings, returning Thu, 15 Jan, priced at AU$271 found 19 hours ago
Delta
Thu, 8 Jan - Thu, 15 Jan
SEA
Seattle
BIL
Billings
AU$309 Return, found 19 hours ago
AU$309
Return
found 19 hours ago
Select Delta flight, departing Thu, 8 Jan from Seattle to Billings, returning Thu, 15 Jan, priced at AU$309 found 19 hours ago
United
Thu, 8 Jan - Thu, 15 Jan
SEA
Seattle
BIL
Billings
AU$362 Return, found 19 hours ago
AU$362
Return
found 19 hours ago
Select United flight, departing Thu, 8 Jan from Seattle to Billings, returning Thu, 15 Jan, priced at AU$362 found 19 hours ago
American Airlines
Thu, 8 Jan - Thu, 15 Jan
SEA
Seattle
BIL
Billings
AU$437 Return, found 19 hours ago
AU$437
Return
found 19 hours ago
Select American Airlines flight, departing Thu, 8 Jan from Seattle to Billings, returning Thu, 15 Jan, priced at AU$437 found 19 hours ago
Air Canada
Thu, 8 Jan - Wed, 14 Jan
YYC
Calgary
BIL
Billings
AU$638 Return, found 4 days ago
AU$638
Return
found 4 days ago
Select Air Canada flight, departing Thu, 8 Jan from Calgary to Billings, returning Wed, 14 Jan, priced at AU$638 found 4 days ago

Find the cheapest month to fly from Columbus (CMH) to Billings (BIL)

January is typically the cheapest month to fly

From AU$462 - AU$1,661 per traveller.

Roundup Flights

Have the time of your life in Roundup

Flying to Roundup is now easier than ever when you use Expedia to book your trip. We’ve got an extensive catalogue of Roundup 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 Roundup 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 Roundup. 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 Roundup, 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 Roundup when bundled with your accommodation.

What are you waiting for?

Expedia.com.au helps you find cheap flights to Roundup AU$271. So why wait another second to begin planning your trip? Start your search right now, and you could be boarding the next Roundup-bound flight. Bon voyage!

Frequently asked questions

What is the name of Roundup's airport?
Roundup is served by just one airport, Logan Intl. Airport (BIL).
What airport is best to fly into Roundup?
Head through the glass doors of Logan Intl. Airport (BIL) and your Roundup trip will have begun! The city's main airport, it's located 72 kilometres from the city centre.
How many airlines fly to Roundup?
There are 5 airlines connecting Roundup to 14 airports from all over the globe.
Which airlines fly to Roundup?
Flights into Roundup are typically operated by Cape Air. The largest proportion of these flights take off from Sidney, with Cape Air servicing this route the most often.
How many nonstop flights are there to Roundup?
With approximately 193 direct flights every week, you'll be hitting the tarmac in Roundup before you have time to say, "Are we there yet?"
Where are the most popular flights to Roundup departing from?
Flights to Roundup from Denver, Salt Lake City and Dallas airports are in high demand.
How long is the flight to Roundup Airport?
If it's Denver you're departing, you'll be airborne for around 1 hour and 37 minutes before you touchdown in Roundup. Terminal to terminal from Salt Lake City takes around 1 hour and 34 minutes and from Dallas, the flight time is 3 hours and 6 minutes.
How to book the cheapest flight to Roundup?
Don't leave booking your flight to Roundup until the last possible moment. That's one trick savvy jet-setters use to get the best deals. Booking ahead means more options and cheaper flights. Also, do some online research and compare your options. If your destination has several airports, you may be able to pick up a great price by flying into one that's further away. Last but not least, be prepared to secure your seat quickly if you find a great price. It might not stick around for too long! With a bit of know-how and some luck, the ideal fare can be yours.
Do you have any tips for my flight to Roundup?
If you're not prepared, airports and flying can be daunting. But don't hit the panic button just yet. Follow these helpful hints and enjoy a comfortable start to your getaway in Roundup. What to pack in your hand luggage:

  • Air travel can be a pleasure if you pack the right things. First of all you'll need basic toiletries, such as deodorant and a toothbrush, a fresh change of clothes and a few magazines. Next, find a spot in your bag for your phone, tablet and chargers, your important medications and maybe a cosy neck pillow as well. Last, but definitely not least, don't forget to bring your passport, travel papers and some cash.

Do not pack the following items in your hand luggage:

  • Check carefully that you don't have sharp or pointed objects lurking in one of the compartments of your carry-on luggage. Other restricted items include flammable or explosive products, such as aerosol cans and bleach, and gels and liquids in containers with a volume of more than 3.4 ounces (100 millilitres).

What to wear on a flight:

  • Comfort should be your number one priority when deciding what to wear during your flight. Loose, breathable clothing is a smart option, as are flat, slightly roomy shoes.
  • It's likely you've heard about deep vein thrombosis (DVT), a blood clot condition caused by prolonged periods of sitting. To reduce your risk on board, drink plenty of water, consider wearing compression socks or tights and move your legs and feet often.

How to get through airport security fast when flying to Roundup?
The answer is simple — be organised. We've rounded up some helpful hints for a speedy trip through airport security. Look out Roundup, here you come:

  • Your travel ID and boarding pass will need to be inspected by airport security personnel. Have them close by to avoid fumbling around for them.
  • Next up, both you and your carry-on luggage will be X-rayed. To speed things up, take off anything that might set the alarms off. Items such as your belt, jacket and earphones need to go through the machine.
  • Your electronic gadgets like phones and laptops will also have to go through the machine for inspection. No need to worry though, you'll be back online in no time.
  • Want to bring along your favourite perfume? As long as it's in a container no larger than 3.4 ounces (100 millilitres) and it's stored in a zip-lock bag, it's fine to bring with you in your carry-on luggage.
  • Lightweight sneakers are a practical footwear choice as you're less likely to be asked to remove them when going through security. Big boots and other heavy-style shoes are often subjected to extra screening.
  • Avoid taking prohibited items in your carry-on bag. If you have any sharp or pointed objects, pack them in your checked suitcase. They won't be allowed in the cabin.

Flights to Roundup information
Destination airport
Logan Intl.
Destination airport IATA code
BIL
Destination city name
Billings
Return price
AU$271

Trending flights to Roundup

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, 12 Jan - Mon, 2 Feb
SYD
Sydney
BIL
Billings
AU$1,711 Return, found 2 days ago
AU$1,711
Return
found 2 days ago
Select United flight, departing Mon, 12 Jan from Sydney to Billings, returning Mon, 2 Feb, priced at AU$1,711 found 2 days ago

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