Cheap Flights to Petroleum County from $50 (2026/2027)

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How Much Does it Cost To Fly To Petroleum County?

Prices found within past 7 days. Prices and availability subject to change. Additional terms may apply.

Thu, Nov 12 - Mon, Nov 16
BIL
Logan Intl.
GGW
Glasgow Valley County
$100 Roundtrip, found 1 hour ago
$100
Roundtrip
found 1 hour ago
Select Cape Air flight, departing Thu, Nov 12 from Logan Intl. to Glasgow Valley County, returning Mon, Nov 16, priced at $100 found 1 hour ago
Thu, Nov 12 - Mon, Nov 16
BIL
Logan Intl.
GGW
Glasgow Valley County
$110 Roundtrip, found 1 hour ago
$110
Roundtrip
found 1 hour ago
Select Cape Air flight, departing Thu, Nov 12 from Logan Intl. to Glasgow Valley County, returning Mon, Nov 16, priced at $110 found 1 hour ago
Thu, Oct 29 - Mon, Nov 2
BIL
Logan Intl.
GGW
Glasgow Valley County
$120 Roundtrip, found 5 hours ago
$120
Roundtrip
found 5 hours ago
Select Cape Air flight, departing Thu, Oct 29 from Logan Intl. to Glasgow Valley County, returning Mon, Nov 2, priced at $120 found 5 hours ago
Fri, Jul 30 - Mon, Aug 2
DEN
Denver Intl.
BIL
Logan Intl.
$319 Roundtrip, found 2 days ago
$319
Roundtrip
found 2 days ago
Select United flight, departing Fri, Jul 30 from Denver Intl. to Logan Intl., returning Mon, Aug 2, priced at $319 found 2 days ago
Fri, Mar 5 - Sun, Mar 14
DEN
Denver Intl.
BIL
Logan Intl.
$325 Roundtrip, found 2 days ago
$325
Roundtrip
found 2 days ago
Select United flight, departing Fri, Mar 5 from Denver Intl. to Logan Intl., returning Sun, Mar 14, priced at $325 found 2 days ago
Thu, Nov 26 - Mon, Nov 30
DEN
Denver Intl.
BIL
Logan Intl.
$325 Roundtrip, found 2 days ago
$325
Roundtrip
found 2 days ago
Select United flight, departing Thu, Nov 26 from Denver Intl. to Logan Intl., returning Mon, Nov 30, priced at $325 found 2 days ago
Fri, Dec 4 - Sat, Dec 5
DEN
Denver Intl.
BIL
Logan Intl.
$345 Roundtrip, found 2 days ago
$345
Roundtrip
found 2 days ago
Select Delta flight, departing Fri, Dec 4 from Denver Intl. to Logan Intl., returning Sat, Dec 5, priced at $345 found 2 days ago
Fri, Dec 18 - Sun, Dec 20
DEN
Denver Intl.
BIL
Logan Intl.
$349 Roundtrip, found 2 days ago
$349
Roundtrip
found 2 days ago
Select United flight, departing Fri, Dec 18 from Denver Intl. to Logan Intl., returning Sun, Dec 20, priced at $349 found 2 days ago
OriginDestinationTravel DatesFlights From*
BILGlasgowNovember 10 to November 13$100
SEABillingsJanuary 9 to January 16$225
SLCBillingsDecember 7 to December 9$356
BOIBillingsJanuary 12 to January 19$405
BWIBillingsNovember 25 to November 27$422
SEAGlasgowNovember 16 to November 20$529
*Prices include taxes and fees
OriginDestinationTravel DatesFlights From*
BILGlasgowOctober 31 to November 1$100
SEABillingsOctober 30 to November 1$597
BOIBillingsOctober 30 to November 9$789
SLCBillingsOctober 31 to November 14$841
*Prices include taxes and fees

Travelers ❤️ These Petroleum County 🏨

​The CMR Island: 80 acres Borders Refuge on 3 Sides Unit 410 Basecamp

​The CMR Island: 80 acres Borders Refuge on 3 Sides Unit 410 Basecamp

Winnett MT
Stay at this cabin in Winnett. Enjoy air conditioning.
10/10 Exceptional! (1 review)
"This is a very remote property. The surrounding area is amazingly beautiful and the wildlife is incredible. The residence has 3 bedrooms and sleeps well. The AC was helpful with the warmer temps that I experienced and the tv and WiFi were very reliable. I would definitely come back to enjoy the surroundings. ..."

Reviewed on Sep 27, 2026

Opens in a new window​The CMR Island: 80 acres Borders Refuge on 3 Sides Unit 410 Basecamp
Small Town Big Sky

Small Town Big Sky

Winnett MT
Stay at this vacation home in Winnett. Enjoy free WiFi, a garden, and laundry facilities.
9.6/10 Exceptional! (8 reviews)
"Awesome place, great for groups."

Reviewed on Jun 12, 2026

Opens in a new windowSmall Town Big Sky
Harry's House....Simple Sleeping

Harry's House....Simple Sleeping

Roy MT
Stay at this cabin in Roy. Enjoy an in-room coffeemaker and air conditioning.
9.8/10 Exceptional! (96 reviews)
"Everything was great, we never talked to the owner but the door had our code and we were able to access the property with no trouble. Very quiet neighborhood, I would recommend this if you need a room in Roy, MT."

Reviewed on Oct 19, 2026

Opens in a new windowHarry's House....Simple Sleeping
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Near Hunting: Cozy Cabin w/ Deck in Grass Range!

Near Hunting: Cozy Cabin w/ Deck in Grass Range!

3 out of 5
Grass Range MT
Stay at this cottage in Grass Range. Enjoy free parking and in-room fireplaces.
10/10 Exceptional! (2 reviews)
"Great place to stay! Great hosts and amenities!"

Reviewed on Jul 4, 2026

Opens in a new windowNear Hunting: Cozy Cabin w/ Deck in Grass Range!
Lowest nightly price found within the past 24 hours based on a 1 night stay for 2 adults. Prices and availability subject to change. Additional terms may apply.

Frequently asked questions

How much is the cheapest flight to Petroleum County?
To give you a ballpark figure, the cheapest roundtrip flight to Petroleum County was $100 during the last seven days. An excellent way to snap up a good deal is to be flexible with your dates. This price was available on Travelocity for flights to Petroleum County departing within the next year. Prices and availability are subject to change. Additional terms apply.
What is the cheapest month to fly to Petroleum County?
Splash out more money on epic adventures and less on airfares by zipping off to Petroleum County in November. This is the best-priced month to jet off to this destination according to Travelocity's direct return flight demand between January and December last year. Take a peek at our selection of flights and get out of town without breaking the bank.
How can I check my flight status to Petroleum County?
"Trips" should be your first stop when it comes to the details of your flight to Petroleum County. Travelocity's customer portal lets you handle everything in the one place, from checking the status of your flight to changing or canceling your booking. Click on Trips at the top of the Travelocity homepage and then create a new account or sign in to an existing one. Or you can download the Travelocity app and access your itinerary on the go. Whether you've got the family flying with you or you're on your own, all your travel plans are right at your fingertips.
How do I find the best deals on flights to Petroleum County?
There are a few ways — book in advance, avoid peak season and be flexible with your travel dates. If your dates aren't set in stone, search for your flight to Petroleum County on Travelocity and click on "Flexible dates" above your results. This will help you locate any cheaper fares on surrounding days. $100 was the best deal for a return flight to Petroleum County in the last seven days. This price was available on Travelocity for flights departing within the next year. Prices and availability are subject to change. Additional terms apply.
Why should I book my flight to Petroleum County with Travelocity?
Browse cheap flights to Petroleum County with Travelocity and start planning your next vacation. With round-the-clock customer support throughout every step of the process and our Price Match Guarantee, we take the difficulty out of finding cheap family flights, accommodations and more. Get your hands on a great deal today and gear up for the adventure of your dreams.
What are the most popular flight routes to Petroleum County?
To help you choose your flights to Petroleum County, here's our list of some of the preferred routes:

  • Sidney, MT (SDY-Sidney-Richland Municipal) to Logan Intl. Airport (BIL) - 1,061 flights a month.
  • Denver, CO (DEN-Denver Intl.) to Logan Intl. Airport (BIL) - 862 flights a month.
  • Salt Lake City, UT (SLC-Salt Lake City Intl.) to Logan Intl. Airport (BIL) - 637 flights a month.

How much is a flight to Petroleum County on average?
Passengers have found roundtrip flights to Petroleum County for between $100 and $841 with Travelocity in the last seven days. Whether you want to fly economy or business class, we'll help you land the best deal. These prices were available on Travelocity for flights departing within the next year. Prices and availability are subject to change. Additional terms apply.
How long is the average flight to Petroleum County?
The length of a direct flight to Petroleum County of course varies, but here's an idea of the average journey times for a selection of popular routes:

  • Sidney, MT (SDY-Sidney-Richland Municipal) to Logan Intl. Airport (BIL) - 1 hour and 35 minutes
  • Denver, CO (DEN-Denver Intl.) to Logan Intl. Airport (BIL) - 1 hour and 36 minutes
  • Salt Lake City, UT (SLC-Salt Lake City Intl.) to Logan Intl. Airport (BIL) - 1 hour and 24 minutes

What can I expect on a flight to Petroleum County?
If you have a long-haul flight to Petroleum County, you can usually expect drinks, food and entertainment on board. Airlines try to make longer flights as comfortable as possible for passengers. Brief trips — as well as flights with budget airlines — may have less inclusions. If you're chasing cheap flights for family vacations with a low-priced carrier, it's possible you'll pay extra for entertainment and food.