Cheap flights to Petroleum County

View €148 flight on Sat, 21 Feb 2026Opens in a new window

Popular airlines to Petroleum County

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Cheap round-trip flights to Petroleum County

Prices were available within the past 7 days and start at €148 for one-way flights and €178 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Thu, 26 Feb - Mon, 2 Mar
DEN
Denver
BIL
Billings
€178 Return, found 1 day ago
€178
Return
found 1 day ago
Select Delta flight, departing Thu, 26 Feb from Denver to Billings, returning Mon, 2 Mar, priced at €178 found 1 day ago
United
Thu, 26 Feb - Mon, 2 Mar
DEN
Denver
BIL
Billings
€212 Return, found 1 day ago
€212
Return
found 1 day ago
Select United flight, departing Thu, 26 Feb from Denver to Billings, returning Mon, 2 Mar, priced at €212 found 1 day ago
Delta
Thu, 26 Feb - Mon, 2 Mar
DEN
Denver
BIL
Billings
€215 Return, found 1 day ago
€215
Return
found 1 day ago
Select Delta flight, departing Thu, 26 Feb from Denver to Billings, returning Mon, 2 Mar, priced at €215 found 1 day ago
Delta
Thu, 26 Feb - Mon, 2 Mar
DEN
Denver
BIL
Billings
€228 Return, found 1 day ago
€228
Return
found 1 day ago
Select Delta flight, departing Thu, 26 Feb from Denver to Billings, returning Mon, 2 Mar, priced at €228 found 1 day ago
Delta
Thu, 26 Feb - Mon, 2 Mar
DEN
Denver
BIL
Billings
€241 Return, found 1 day ago
€241
Return
found 1 day ago
Select Delta flight, departing Thu, 26 Feb from Denver to Billings, returning Mon, 2 Mar, priced at €241 found 1 day ago
United
Thu, 26 Feb - Mon, 2 Mar
DEN
Denver
BIL
Billings
€250 Return, found 1 day ago
€250
Return
found 1 day ago
Select United flight, departing Thu, 26 Feb from Denver to Billings, returning Mon, 2 Mar, priced at €250 found 1 day ago
American Airlines
Sat, 21 Feb - Wed, 25 Feb
SEA
Seattle
BIL
Billings
€260 Return, found 1 day ago
€260
Return
found 1 day ago
Select American Airlines flight, departing Sat, 21 Feb from Seattle to Billings, returning Wed, 25 Feb, priced at €260 found 1 day ago
Delta
Thu, 26 Feb - Mon, 2 Mar
DEN
Denver
BIL
Billings
€263 Return, found 1 day ago
€263
Return
found 1 day ago
Select Delta flight, departing Thu, 26 Feb from Denver to Billings, returning Mon, 2 Mar, priced at €263 found 1 day ago
Lufthansa
Thu, 16 Apr - Mon, 20 Apr
DUB
Dublin
BIL
Billings
€871 Return, found 2 days ago
€871
Return
found 2 days ago
Select Lufthansa flight, departing Thu, 16 Apr from Dublin to Billings, returning Mon, 20 Apr, priced at €871 found 2 days ago
Air Canada
Thu, 16 Apr - Mon, 20 Apr
DUB
Dublin
BIL
Billings
€888 Return, found 2 days ago
€888
Return
found 2 days ago
Select Air Canada flight, departing Thu, 16 Apr from Dublin to Billings, returning Mon, 20 Apr, priced at €888 found 2 days ago

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.

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, €178 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 €178 and €888 in the last seven days. For one-way trips leaving from Seattle (SEA), the lowest price during this time was just €148.
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.
How much is a plane ticket to Petroleum County?
In the last seven days, plane tickets to Petroleum County cost between €178 and €888. 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.

Trending flights to Petroleum County

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.

Delta
Wed, 11 Feb - Wed, 18 Feb
DUB
Dublin
BIL
Billings
€831 Return, found 3 days ago
€831
Return
found 3 days ago
Select Delta flight, departing Wed, 11 Feb from Dublin to Billings, returning Wed, 18 Feb, priced at €831 found 3 days ago
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