Cheap Flights to Petroleum County | Popular Routes to Petroleum County from HK$3,436

View HK$3,436 flight on Thu, 11 Jun 2026Opens in a new window

Flight 1

Flight 2

Popular airlines to Petroleum County

  • Alaska Airlines

  • Delta

  • United

  • American Airlines

  • Southwest Airlines

  • JetBlue Airways

  • Lufthansa

  • Be in the know

    Get alerts if flight prices drop or rise*

  • Book smarter

    Save up to 35% on select hotels after you book a flight*

  • Earn twice

    Earn your airline miles on top of our rewards
    Sign in

Cheap round-trip flights to Petroleum County

Prices were available within the past 7 days and start at HK$3,436 for one-way flights and HK$2,603 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Wed, 3 Jun - Sat, 20 Jun
SFO
San Francisco
BIL
Billings
HK$2,603 Return, found 1 day ago
HK$2,603
Return
found 1 day ago
Select Delta flight, departing Wed, 3 Jun from San Francisco to Billings, returning Sat, 20 Jun, priced at HK$2,603 found 1 day ago
Alaska Airlines
Tue, 2 Jun - Wed, 17 Jun
SFO
San Francisco
BIL
Billings
HK$2,636 Return, found 1 day ago
HK$2,636
Return
found 1 day ago
Select Alaska Airlines flight, departing Tue, 2 Jun from San Francisco to Billings, returning Wed, 17 Jun, priced at HK$2,636 found 1 day ago
Delta
Wed, 8 Jul - Fri, 24 Jul
SFO
San Francisco
BIL
Billings
HK$2,744 Return, found 1 day ago
HK$2,744
Return
found 1 day ago
Select Delta flight, departing Wed, 8 Jul from San Francisco to Billings, returning Fri, 24 Jul, priced at HK$2,744 found 1 day ago
Delta
Wed, 3 Jun - Mon, 22 Jun
SFO
San Francisco
BIL
Billings
HK$2,872 Return, found 1 day ago
HK$2,872
Return
found 1 day ago
Select Delta flight, departing Wed, 3 Jun from San Francisco to Billings, returning Mon, 22 Jun, priced at HK$2,872 found 1 day ago
Delta
Tue, 16 Jun - Sat, 4 Jul
SFO
San Francisco
BIL
Billings
HK$2,936 Return, found 1 day ago
HK$2,936
Return
found 1 day ago
Select Delta flight, departing Tue, 16 Jun from San Francisco to Billings, returning Sat, 4 Jul, priced at HK$2,936 found 1 day ago
Alaska Airlines
Tue, 9 Jun - Wed, 17 Jun
SFO
San Francisco
BIL
Billings
HK$2,948 Return, found 1 day ago
HK$2,948
Return
found 1 day ago
Select Alaska Airlines flight, departing Tue, 9 Jun from San Francisco to Billings, returning Wed, 17 Jun, priced at HK$2,948 found 1 day ago
Alaska Airlines
Thu, 4 Jun - Wed, 17 Jun
SFO
San Francisco
BIL
Billings
HK$2,980 Return, found 1 day ago
HK$2,980
Return
found 1 day ago
Select Alaska Airlines flight, departing Thu, 4 Jun from San Francisco to Billings, returning Wed, 17 Jun, priced at HK$2,980 found 1 day ago
Delta
Fri, 12 Jun - Sat, 20 Jun
SFO
San Francisco
BIL
Billings
HK$3,013 Return, found 1 day ago
HK$3,013
Return
found 1 day ago
Select Delta flight, departing Fri, 12 Jun from San Francisco to Billings, returning Sat, 20 Jun, priced at HK$3,013 found 1 day ago
United
Sun, 2 Aug - Mon, 17 Aug
SFO
San Francisco
BIL
Billings
HK$3,367 Return, found 1 day ago
HK$3,367
Return
found 1 day ago
Select United flight, departing Sun, 2 Aug from San Francisco to Billings, returning Mon, 17 Aug, priced at HK$3,367 found 1 day ago
American Airlines
Thu, 11 Jun - Sat, 13 Jun
SFO
San Francisco
BIL
Billings
HK$6,797 Return, found 1 day ago
HK$6,797
Return
found 1 day ago
Select American Airlines flight, departing Thu, 11 Jun from San Francisco to Billings, returning Sat, 13 Jun, priced at HK$6,797 found 1 day ago

Frequently asked questions

How do I find cheap flights to Petroleum County that have flexible change policies?
Search for low-cost flights to Petroleum County, then mark the "No change fee" box underneath the "Flexible change policies" subheading. It really is that simple. We understand that travel plans can change and flexibility is important, so book with confidence with Expedia.
Which airlines fly to Petroleum County?
Reserve your seat with one of these airlines and Petroleum County will be yours to discover:

  • Cape Air - 395 flights to or near Petroleum County each month, including 395 flights to Logan Intl. Airport (BIL) per month.
  • United Airlines - 121 flights to or near Petroleum County each month, including 121 flights to Logan Intl. Airport (BIL) per month.
  • Delta Air Lines - 117 flights to or near Petroleum County each month, including 117 flights to Logan Intl. Airport (BIL) per month.

How can I find cheap tickets to Petroleum County?
For an unbeatable deal to Petroleum County, book well ahead of time. Also think about using Expedia's handy "flexible dates" link above your search results. This will compare prices for similar time frames. In the last seven days, HK$2,603 was the lowest price for a flight to Petroleum County.
How much is a flight to Petroleum County?
You could have locked in a return ticket to Petroleum County from anywhere between HK$2,603 and HK$6,797 in the last seven days. For one-way trips leaving from San Francisco (SFO), the lowest price during this time was just HK$3,436.
What are the most popular airports to fly into in Petroleum County?
Petroleum County's main entry point is Logan Intl. Airport (BIL). Get your amazing journey underway by locking in an airfare on one of the 807 monthly flights to this destination.
When is the cheapest time to fly to Petroleum County?
Jet off early in the week to land a bargain fare to Petroleum County. Tuesday is normally the most cost-effective day to take off, with Monday a close second. Saturday often has the most expensive fares. This is because a lot of travellers prefer to kick off their getaway on a weekend.
How much is a plane ticket to Petroleum County?
In the last seven days, plane tickets to Petroleum County cost between HK$2,603 and HK$6,797. Prices usually rise as your travel date nears, so grab a cheap flight today.
What months are the cheapest to book a flight to Petroleum County?
To secure a fabulous deal to Petroleum County, book sometime in February when the price of airfares are at their cheapest. When's the most expensive? In the U.S, it's December.

Book with confidence

About Petroleum County

Expedia offers flights to Petroleum County to meet every traveller's needs. Whatever your flight need - Expedia has the flight for you. So choose from flights to Petroleum County or destinations around the world and discover how easy it is to make your flight reservations on Expedia.
About Petroleum County

Explore a world of travel with Expedia

*Available to Expedia members.