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Helena

$129+ 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 8/30. Fares are subject to change and may not be available on all flights or dates of travel.
OAK — HLN
Jun 17 — Jun 241
Tue 6/17
Tue 6/24
1 adult, Economy
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Cheap 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 June 12, 2025.

Round-trip from

$330
(Alaska Airlines)

One-way from

$129
(Delta)

Popular in

March

Cheapest in

October

Average price

$461
From Oakland to Helena
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One-way flight from Oakland to Helena
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Highest demand for flights based on searches. 28% potential increase in price ($230 potential increase over avg. RT price).
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Cheapest flight prices on average. 10% potential price decrease ($54 potential savings vs. average RT price).
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Average for round-trip flights in June 2025
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Find 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 June 12, 2025.

This Alaska Airlines deal was found by Cheapflights users on 6/12. 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.
Thu 8/286:15 amOAK - HLN
1 stop8h 06mAlaska Airlines
Tue 9/24:02 pmHLN - OAK
1 stop19h 19mAlaska Airlines
Deal found 6/12$330
This Delta deal was found by Cheapflights users on 6/12. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/124:55 pmOAK - HLN
1 stop5h 01mDelta
Tue 7/221:00 pmHLN - OAK
1 stop4h 14mDelta
Deal found 6/12$341

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 June 12, 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

Thu 8/28

6:15 am-3:21 pm

1 stop8h 06m

Helena

Tue 9/2

4:02 pm-10:21 am

1 stop19h 19m

$330

OaklandHelena

OAK - HLN

OAKHLN

Oakland

Sat 7/12

4:55 pm-10:56 pm

1 stop5h 01m

Helena

Tue 7/22

1:00 pm-4:14 pm

1 stop4h 14m

$341

OaklandHelena

OAK - HLN

OAKHLN

Oakland

Sat 8/30

4:58 pm-10:13 pm

1 stop4h 15m

$129

OaklandHelena

OAK - HLN

OAKHLN

Oakland

Mon 9/22

2:30 pm-3:21 pm

1 stop23h 51m

$167

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/10

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, February is the cheapest month in which you can book a flight from Oakland, California to Helena (average of $353). Flying from Oakland, California to Helena in July is currently the most expensive (average of $555). 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.

Rainfall in Helena by month

Plan your trip to Helena by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Helena ranges from 0.3 - 2.1 inches per month. June is typically the wettest month, when rainfall can reach 2.1 in. February is typically the driest time to visit Helena when rainfall is around 0.3 in.

Temperature in Helena by month

Plan your trip to Helena by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Helena, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 69.8 F. Travelers looking to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 21.2 F).

Reviews of airlines servicing Helena

Get insights into the airlines that provide service to Helena. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Helena. Reviews last updated June 12, 2025.
Get a feel of what it's like to fly with Alaska Airlines and Delta from Oakland to Helena by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
10,000 reviews

Overall

8.0

Entertainment

7.1

Food

7.1

Boarding

8.1

Comfort

7.8

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Overall

8.0

Entertainment

7.1

Food

7.1

Boarding

8.1

Comfort

7.8

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Delta
8.0
Very good
7,950 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Overall

8.0

Entertainment

7.1

Food

7.1

Boarding

8.1

Comfort

7.8

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

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.

  • What are the cheapest airlines flying from Oakland, California to Helena round-trip?

    According to our current data, Alaska Airlines ($330), and Delta ($341) offers the cheapest pricing from Oakland, California to Helena.

  • 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, February is the cheapest month in which you can book a flight from Oakland, California to Helena (average of $353). Flying from Oakland, California to Helena in July is currently the most expensive (average of $555). 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.

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