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Helena

$341+ Cheap flights from Oakland, CA to Helena (OAK - HLN)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 9/1. Fares are subject to change and may not be available on all flights or dates of travel.
OAK — HLN
Aug 4 — Aug 111
Mon 8/4
Mon 8/11
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 July 30, 2025.

Round-trip from

$341
(Delta)

Popular in

March

Cheapest in

October

Average price

$668
From Oakland to Helena
Search Deals
Highest demand for flights based on searches. 25% potential increase in price ($202 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 9% potential price decrease ($50 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in July 2025
Search Deals

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 July 30, 2025.

This Delta deal was found by Cheapflights users on 7/28. 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.
Mon 9/16:00 amOAK - HLN
1 stop5h 20mDelta
Tue 9/91:00 pmHLN - OAK
1 stop4h 16mDelta
Deal found 7/28$341
This Alaska Airlines deal was found by Cheapflights users on 7/30. 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 12/249:35 amOAK - HLN
2 stops31h 20mAlaska Airlines
Mon 12/296:32 pmHLN - OAK
1 stop6h 27mAlaska Airlines
Deal found 7/30$604

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 July 30, 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

Mon 9/1

6:00 am-12:20 pm

1 stop5h 20m

Helena

Tue 9/9

1:00 pm-4:16 pm

1 stop4h 16m

$341

OaklandHelena

OAK - HLN

OAKHLN

Oakland

Wed 12/24

9:35 am-5:55 pm

2 stops31h 20m

Helena

Mon 12/29

6:32 pm-11:59 pm

1 stop6h 27m

$604

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/28

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 May is currently the most expensive (average of $517). 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.

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 July 30, 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

Crew

8.5

Food

7.1

Boarding

8.1

Comfort

7.8

Entertainment

7.1

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

Crew

8.5

Food

7.1

Boarding

8.1

Comfort

7.8

Entertainment

7.1

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
7,980 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Overall

8.0

Crew

8.5

Food

7.1

Boarding

8.1

Comfort

7.8

Entertainment

7.1

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, Delta ($341), and Alaska Airlines ($604) 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 May is currently the most expensive (average of $517). 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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