Cheap Flights to Petroleum County from $74

View $74 flight on Fri, Apr 24, 2026Opens in a new window

Popular airlines to Petroleum County

  • Alaska Airlines

  • Delta

  • United

  • American Airlines

  • Southwest Airlines

  • JetBlue Airways

  • Qantas Airways

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How much is the cheapest flight to Petroleum County?

Prices were available within the past 7 days and start at $74 for one-way flights and $137 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Wed, Apr 15 - Sat, Apr 18
SEA
Seattle
BIL
Billings
$137 Roundtrip, found 12 hours ago
$137
Roundtrip
found 12 hours ago
Select Delta flight, departing Wed, Apr 15 from Seattle to Billings, returning Sat, Apr 18, priced at $137 found 12 hours ago
Hawaiian Airlines
Sat, Mar 14 - Fri, Mar 20
SEA
Seattle
BIL
Billings
$137 Roundtrip, found 2 days ago
$137
Roundtrip
found 2 days ago
Select Hawaiian Airlines flight, departing Sat, Mar 14 from Seattle to Billings, returning Fri, Mar 20, priced at $137 found 2 days ago
Alaska Airlines
Tue, Mar 3 - Sat, Mar 7
SEA
Seattle
BIL
Billings
$137 Roundtrip, found 1 hour ago
$137
Roundtrip
found 1 hour ago
Select Alaska Airlines flight, departing Tue, Mar 3 from Seattle to Billings, returning Sat, Mar 7, priced at $137 found 1 hour ago
Delta
Sat, Apr 18 - Tue, Apr 21
SEA
Seattle
BIL
Billings
$142 Roundtrip, found 12 hours ago
$142
Roundtrip
found 12 hours ago
Select Delta flight, departing Sat, Apr 18 from Seattle to Billings, returning Tue, Apr 21, priced at $142 found 12 hours ago
Delta
Thu, Apr 30 - Sat, May 2
SEA
Seattle
BIL
Billings
$143 Roundtrip, found 2 days ago
$143
Roundtrip
found 2 days ago
Select Delta flight, departing Thu, Apr 30 from Seattle to Billings, returning Sat, May 2, priced at $143 found 2 days ago
Delta
Wed, Apr 15 - Sat, Apr 18
SEA
Seattle
BIL
Billings
$147 Roundtrip, found 12 hours ago
$147
Roundtrip
found 12 hours ago
Select Delta flight, departing Wed, Apr 15 from Seattle to Billings, returning Sat, Apr 18, priced at $147 found 12 hours ago
Alaska Airlines
Fri, Mar 13 - Sun, Mar 22
SEA
Seattle
BIL
Billings
$152 Roundtrip, found 23 hours ago
$152
Roundtrip
found 23 hours ago
Select Alaska Airlines flight, departing Fri, Mar 13 from Seattle to Billings, returning Sun, Mar 22, priced at $152 found 23 hours ago
Delta
Sat, Apr 18 - Tue, Apr 21
SEA
Seattle
BIL
Billings
$152 Roundtrip, found 12 hours ago
$152
Roundtrip
found 12 hours ago
Select Delta flight, departing Sat, Apr 18 from Seattle to Billings, returning Tue, Apr 21, priced at $152 found 12 hours ago
United
Wed, Mar 25 - Tue, Mar 31
SEA
Seattle
BIL
Billings
$187 Roundtrip, found 2 days ago
$187
Roundtrip
found 2 days ago
Select United flight, departing Wed, Mar 25 from Seattle to Billings, returning Tue, Mar 31, priced at $187 found 2 days ago
American Airlines
Tue, Aug 11 - Tue, Aug 18
ORD
Chicago
BIL
Billings
$229 Roundtrip, found 18 hours ago
$229
Roundtrip
found 18 hours ago
Select American Airlines flight, departing Tue, Aug 11 from Chicago to Billings, returning Tue, Aug 18, priced at $229 found 18 hours ago

Enjoy extra legroom, flight flexibility, and a seamless travel experience.

*Flight schedules are subject to change.

*Flight schedules are subject to change.

Trending flights to Petroleum County

These prices were available within the past 7 days. Prices quoted are per person, round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Wed, Apr 15 - Sat, Apr 18
SEA
Seattle
BIL
Billings
$137 Roundtrip, found 12 hours ago
$137
Roundtrip
found 12 hours ago
Select Delta flight, departing Wed, Apr 15 from Seattle to Billings, returning Sat, Apr 18, priced at $137 found 12 hours ago
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