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Helena

$119+ Cheap flights from Oakland, CA to Helena (OAK - HLN)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 1/13. Fares are subject to change and may not be available on all flights or dates of travel.
OAK — HLN
Jan 15 — Jan 221
Thu 1/15
Thu 1/22
1 adult, Economy
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Cheap flight deals from Oakland to Helena

Cheapest flights from Oakland to Helena
Explore the most affordable flight options available from Oakland to Helena. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 16, 2025.

This Alaska Airlines deal was found by Cheapflights users on 12/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/313:01 pmOAK - HLN
1 stop25h 54mAlaska Airlines
Sun 1/46:32 pmHLN - OAK
1 stop6h 27mAlaska Airlines
Deal found 12/16$627

Find flight deals from Oakland to Helena

Discover tips and strategies to find the most affordable flight options for your journey from Oakland (OAK) to Helena (HLN). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated December 16, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
1 star

Round-trip from

$310
(Alaska Airlines)

One-way from

$119
(Alaska Airlines)

Popular in

March

Cheapest in

October

Average price

$847
Provider with most accurate pricing for Oakland-Helena flight deals.
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Provider most trusted by Cheapflights users for Oakland-Helena flights.
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From Oakland to Helena
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One-way flight from Oakland to Helena
Search Deals
Highest demand for flights based on searches. 25% potential increase in price ($200 potential increase over avg. RT price).
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Cheapest flight prices on average. 10% potential price decrease ($56 potential savings vs. average RT price).
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Average for round-trip flights in December 2025
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Cheapflights Fare Finder

 
Customize your flight search to find flights from Oakland to Helena that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated December 16, 2025.
Use the filters below to find and compare flights from Oakland to Helena that are best for you.

Fly from

Oakland

Fly to

Helena

Route

Depart

Return

Price

OaklandHelena

OAK - HLN

OAKHLN

Oakland

Tue 2/3

11:43 am-6:11 pm

1 stop5h 28m

Helena

Wed 2/4

6:48 pm-8:40 pm

1 stop26h 52m

$310

OaklandHelena

OAK - HLN

OAKHLN

Oakland

Thu 4/2

7:54 pm-3:38 pm

1 stop18h 44m

Helena

Sun 4/5

4:10 pm-5:38 pm

1 stop26h 28m

$421

OaklandHelena

OAK - HLN

OAKHLN

Oakland

Wed 6/10

7:00 am-3:31 pm

1 stop7h 31m

Helena

Sat 6/20

4:08 pm-10:06 pm

1 stop6h 58m

$443

OaklandHelena

OAK - HLN

OAKHLN

Oakland

Wed 6/10

7:00 am-3:31 pm

1 stop7h 31m

Helena

Fri 6/19

4:08 pm-10:06 pm

1 stop6h 58m

$443

OaklandHelena

OAK - HLN

OAKHLN

Oakland

Tue 1/13

11:43 am-6:11 pm

1 stop5h 28m

$119

OaklandHelena

OAK - HLN

OAKHLN

Oakland

Sat 2/14

5:31 pm-3:59 pm

1 stop21h 28m

$125

OaklandHelena

OAK - HLN

OAKHLN

Oakland

Fri 2/13

5:55 am-12:25 pm

1 stop5h 30m

$210

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/15

  • Most accurate provider: When it comes to deals on Oakland, California-Helena flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Oakland, California-Helena flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Oakland, California-Helena flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Oakland, California-Helena flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Oakland, California-Helena flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Oakland to Helena

Have a flexible travel schedule? Discover the best time to fly to Helena from Oakland with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Oakland to Helena

What is the cheapest month to book a flight from Oakland, California to Helena?

Currently, August is the cheapest month in which you can book a flight from Oakland, California to Helena (average of $44). Flying from Oakland, California to Helena in December is currently the most expensive (average of $228). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

Related info for your journey

Find useful and relevant information for your journey from Oakland to Helena. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Oakland, California to Helena?

    Departing from Oakland, California to Helena will take you 5h 28m. Airlines will cover a distance of 806 mi.

  • Can I find deals for flights from Oakland to Helena that include hotel bookings?

    Yes. In addition to deals on Oakland to Helena flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Oakland to Helena?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Oakland to Helena.

  • Can I find deals for business class flights from Oakland to Helena?

    Yes. Cheapflights offers flight deals from Oakland to Helena by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Oakland, California to Helena?

    Currently, August is the cheapest month in which you can book a flight from Oakland, California to Helena (average of $44). Flying from Oakland, California to Helena in December is currently the most expensive (average of $228). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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