$382+ Cheap flights from Helena to Oakland, CA (HLN - OAK)
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 9/25. Fares are subject to change and may not be available on all flights or dates of travel.
HLN — OAK
Aug 23 — Aug 301
1 adult, Economy
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1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from Helena to Oakland
Discover tips and strategies to find the most affordable flight options for your journey from Helena (HLN) to Oakland (OAK). 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 August 18, 2025.
Round-trip from | $382 (Alaska Airlines) |
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Find flight deals from Helena to Oakland
Cheapest flights from Helena to OaklandExplore the most affordable flight options available from Helena to Oakland. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 18, 2025.
Explore the most affordable flight options available from Helena to Oakland. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 18, 2025.
This Alaska Airlines deal was found by Cheapflights users on 8/17. 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 9/254:02 pmHLN - OAK
1 stop9h 02mAlaska Airlines
Mon 9/297:58 pmOAK - HLN
1 stop18h 23mAlaska Airlines
Deal found 8/17![Alaska Airlines logo]()
$382
Cheapflights Fare Finder
Customize your flight search to find flights from Helena to Oakland 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 August 18, 2025.
Use the filters below to find and compare flights from Helena to Oakland that are best for you.
Fly from
Helena
Fly to
Oakland
Route
Depart
Return
Price
HelenaOakland
HLN - OAK
HLNOAK
Helena
Thu 9/25
4:02 pm-12:04 am
1 stop9h 02m
Oakland
Mon 9/29
7:58 pm-3:21 pm
1 stop18h 23m
$382
Best time to book a flight from Helena to Oakland
Have a flexible travel schedule? Discover the best time to fly to Oakland from Helena 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 Helena to Oakland
What is the cheapest month to book a flight from Helena to Oakland, California?
Currently, April is the cheapest month in which you can book a flight from Helena to Oakland, California (average of $183). Flying from Helena to Oakland, California in November is currently the most expensive (average of $259). 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.