$68 Cheap flights to Petroleum County

Earn rewards on top of your airline miles with Orbitz Rewards

Many airlines offer flexible change policies

Sign up to receive text alerts about your trip

Cheap flights to Petroleum County from $68 One Way, $90 Round Trip

$90 return flights and $68 one-way flights to Petroleum County were the cheapest prices found within the past 7 days, for the period specified. Prices and availability are subject to change. Additional terms apply.

Fri, Nov 13 - Mon, Nov 16
AZA
Mesa
BIL
Billings
$90 Roundtrip, found 22 hours ago
$90
Roundtrip
found 22 hours ago
Select Allegiant Air flight, departing Fri, Nov 13 from Mesa to Billings, returning Mon, Nov 16, priced at $90 found 22 hours ago
Sat, Oct 17 - Wed, Oct 21
SEA
Seattle
BIL
Billings
$225 Roundtrip, found 3 days ago
$225
Roundtrip
found 3 days ago
Select Bargain Flight flight, departing Sat, Oct 17 from Seattle to Billings, returning Wed, Oct 21, priced at $225 found 3 days ago
Wed, Oct 14 - Sat, Oct 17
PDX
Portland
BIL
Billings
$245 Roundtrip, found 3 days ago
$245
Roundtrip
found 3 days ago
Select Bargain Flight flight, departing Wed, Oct 14 from Portland to Billings, returning Sat, Oct 17, priced at $245 found 3 days ago
Thu, Nov 12 - Sun, Nov 15
SEA
Seattle
BIL
Billings
$247 Roundtrip, found 7 hours ago
$247
Roundtrip
found 7 hours ago
Select United flight, departing Thu, Nov 12 from Seattle to Billings, returning Sun, Nov 15, priced at $247 found 7 hours ago
Fri, Oct 16 - Mon, Oct 19
MSP
Minneapolis
BIL
Billings
$303 Roundtrip, found 10 hours ago
$303
Roundtrip
found 10 hours ago
Select Delta flight, departing Fri, Oct 16 from Minneapolis to Billings, returning Mon, Oct 19, priced at $303 found 10 hours ago
Tue, Nov 10 - Thu, Nov 12
LAX
Los Angeles
BIL
Billings
$321 Roundtrip, found 17 hours ago
$321
Roundtrip
found 17 hours ago
Select Alaska Airlines flight, departing Tue, Nov 10 from Los Angeles to Billings, returning Thu, Nov 12, priced at $321 found 17 hours ago

Deals For This Weekend's Flights

OriginDestinationTravel DatesFlights From*
BILGlasgowAugust 21 to August 23$101
SEABillingsAugust 22 to August 28$529
BOIBillingsAugust 21 to September 16$565
SLCBillingsAugust 21 to August 31$1,018
*Prices include taxes and fees

Find The Perfect Hotel For After Your Flight

Score Epic Petroleum County Accommodation Deals

​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.
Get rates
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

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

Harry's House....Simple Sleeping

Roy MT
$85 nightly
The price is $92 total per night from Sep 6 to Sep 7
$92 total
Sep 6 - Sep 7
Total with taxes and fees
Stay at this cabin in Roy. Enjoy an in-room coffeemaker and air conditioning.
Opens in a new windowHarry's House....Simple Sleeping
Save an average of 15% on thousands of hotels when you're signed in
Sign in
Sign up, it's free
Montana Country Retreat w/ Hot Tub-Near Lewistown

Montana Country Retreat w/ Hot Tub-Near Lewistown

Grass Range MT
Stay at this vacation home in Grass Range. Enjoy free WiFi, a garden, and laundry facilities.
10/10 Exceptional! (4 reviews)
"Gorgeous home and very clean! The host was so kind and accommodating for us. We got to see many deer and prong horn! The neighbor even gave us a great spot to see Elk and it was amazing!!"

Reviewed on Aug 7, 2026

Get rates
Opens in a new windowMontana Country Retreat w/ Hot Tub-Near Lewistown
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.

Need a Car For After Your Flight?

Economy

Chevrolet Spark
  • 4 people
Chevrolet Spark
Economy Chevrolet Spark

Compact

Ford Focus
  • 4 people
Ford Focus
Compact Ford Focus

Midsize

Toyota Corolla
  • 5 people
Toyota Corolla
Midsize Toyota Corolla

SUV

Jeep Compass
  • 5 people
Jeep Compass
SUV Jeep Compass

Petroleum County

Traveling to Petroleum County and need a cheap flight? Orbitz has great deals on flights to Petroleum County right now. Plus, we offer big discounts on hotel rooms and car rentals for a great money-saving trip.

Find Low Cost Flights to Petroleum County Quickly and Hassle-Free

There are many Internet sites that promise cheap Petroleum County flights, but a busy, bargain-minded trip planner needs more than just budget air tickets. Not only does Orbitz offer the best deals for domestic and international air fare, but we also provide the resources and tools to help you plan your flights to Petroleum County, book your lodging, and look up key attractions in Petroleum County. Our easy search tools and guaranteed low prices let you budget your time and your money so you have more of both to spend on your vacation.

New Apps Make Booking Petroleum County Flights Easier Than Ever

You no longer need to be sitting at your computer to find amazing Orbitz sales for flights to Petroleum County now we offer cutting-edge mobile tools for many Android and iOS gadgets. These free apps allow you to run a search for discount air fare, look for special vacation packages, or check on your booked Petroleum County flights from any location. Some special deals are only available for mobile customers, so be sure to take advantage of these free downloads today.

Orbitz Customers Are Truly #1

Orbitz takes pride in providing the best customer experience possible, and that effort doesn't end with discount flights to Petroleum County or user-friendly mobile apps and web tools. Orbitz Customer Service is always ready to answer questions and help you with booking, planning, or canceling your Petroleum County flights. When you need us, we’re here for you!

Frequently asked questions

Which airlines fly to Petroleum County?
You're spoiled for choice with 10 major airlines that travel to Logan Intl. Airport (BIL). Compare ticket prices and land yourself an affordable flight to Petroleum County with any one of these leading carriers:

  • Cape Air - 140 flights to Petroleum County per month
  • Delta - 62 flights to Petroleum County per month
  • United Airlines - 48 flights to Petroleum County per month

How much is a flight to Petroleum County?
Last week, prices hovered between $90 and $1,018 for a return fare to Petroleum County. One-way flights originating from Mesa (AZA) sank as low as just $68 over the same period.
How to book the cheapest flight to Petroleum County?
With some of the best flight deals around, you can jet for less with Orbitz. The following tips and hints will help you score cheap flights to Petroleum County — and leave you with extra cash in your wallet:

  • Depending on where you're departing from, click on the 'Nearby airports' function (located under the departure and arrival options). In certain cases, alternative departure points offer better value for money.
  • Similarly, click on the 'Show flexible dates' link to bring up the prices for days around your chosen departure. You may be able to pick up cheaper flight deals if your itinerary is flexible.
  • Hit 'Show options' to fine tune your search results. You can pick your preferred seating class and airline here. Under 'Sort & Filter' to the left, you can even specify whether you'd like to fly in the morning, afternoon or evening.
  • The early bird catches the most rewarding savings, so book as soon as you've worked out your travel dates. The cheapest airfares sell fast and prices rise as the departure date nears.
  • Combine your flights, hotels and car rentals into a value-for-money package deal. Save your hard-earned dollars for things you're really excited about, like exploring every corner of Petroleum County.
  • Flying during the busy season can mean steep airfares. Try to plan your trip outside of popular dates, such as Easter, Thanksgiving and school breaks.

What is the best time to book a flight to Petroleum County?
If you can, book your tickets to Petroleum County in January. This is the best month to reserve low airfares, closely followed by February and August. With a bit of organizing, you're bound to find a cheap flight with Orbitz.
What day of the week is the cheapest to book a flight to Petroleum County?
Make a booking on a Tuesday, Wednesday or Saturday. Generally, these are the cheapest days of the week to purchase fares to Petroleum County. The vacation of your dreams starts with a great flight deal!
What is the cheapest day of the week to fly to Petroleum County?
According to Orbitz data from 2020, you'll want to kick off your vacation on a Monday to nab cheap flights to Petroleum County. Next cheapest day? Tuesday. Saturday will cost the most. So, think about departing early in the week if you want to score a wallet-friendly fare without paying premium prices.
What is the cheapest month to fly to Petroleum County?
According to Orbitz data, you should fly out in August. This is generally an excellent month to pick up cheap flights to Petroleum County. It's worth bearing in mind that the most expensive time to jet off is during the month of June.
Which airlines allow free cancellation?
We know that plans can change and flexibility is important. That's why you can search for flights that have free cancellation and no change fees on Orbitz. Simply click on "Filter by flexible change policies" and we'll find you fares with more flexibility than a lollipop left in the sun!
What do I need for the flight to Petroleum County?
There's so much to sort out for any big trip, so it's useful to get a little bit of help along the way. Here are a few suggestions to make sure you're prepared for departure:

  • You'll need to take all your travel documents and your identification. How much depends on your place of departure. When reserving your ticket, always use the exact name, birth date and gender as indicated on your current ID.
  • A properly packed carry-on bag is just the ticket for a comfortable flight experience. Given this journey to Petroleum County is no short hop, take a few snacks and things to keep you busy. A good book or magazine is sure to help you pass the time.
  • Airplane cabins are often chilly. If you decide to fly during the height of the Petroleum County summer, be sure to bring a sweater on board just in case.

How do I get cheap first-class/business deals to Petroleum County?
Smart travelers have a knack for finding business or first-class airfares to Petroleum County without the hefty price tag. Take their lead with these useful hints:

  • Be more flexible with your travel dates and hold out for deals on business or first-class airfares.
  • Budget airlines offer first or business-class seats at more affordable prices. Give the full-service carriers a miss and go with one of these cheaper options.
  • Take advantage of your airline's loyalty program and use points to upgrade your seat. You can also bid for an upgrade in an online auction.

Fare, taxes & fees: Fares include all taxes and fees, except baggage fees. Rates shown reflect fares found by other Orbitz users over the past 7 days. Due to rapidly changing airline prices & seat availability, these fares may no longer be available.

Refunds/changes/cancellations: Itinerary changes, if permitted for the fare, will have a $30 service fee charged by Orbitz. Additional airline charges may apply.

Other conditions: Schedules, fares and rules are subject to change without notice. Seats are limited and may not be available on all flights/dates or in all markets. Lower fares may be available. Fares will not be honored retroactively or in exchange for any wholly/partially unused ticket. Tickets are non-transferable and non-refundable. Fare rules are provided for the selected itinerary before booking.