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$312+ Cheap flights from Helena to Oakland, CA (HLN - OAK)

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 4/7. Fares are subject to change and may not be available on all flights or dates of travel.
HLN — OAK
Apr 22 — Apr 291
Wed 4/22
Wed 4/29
1 adult, Economy
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Cheap flight deals from Helena to Oakland

Cheapest flights from Helena to Oakland
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 March 23, 2026.

This Delta deal was found by Cheapflights users on 3/21. 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.
Tue 5/55:40 am
HLN
-
OAK
1 stop7h 13m
Delta
Tue 5/126:00 am
OAK
-
HLN
1 stop5h 23m
Delta
Deal found 3/21$329
This Alaska Airlines deal was found by Cheapflights users on 3/19. 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 5/66:22 pm
HLN
-
OAK
1 stop5h 10m
Alaska Airlines
Mon 5/116:20 am
OAK
-
HLN
1 stop10h 25m
Alaska Airlines
Deal found 3/19$336
This Alaska Airlines deal was found by Cheapflights users on 3/18. 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.
Tue 4/286:22 pm
HLN
-
OAK
1 stop5h 10m
Alaska Airlines
Mon 5/46:20 am
OAK
-
HLN
1 stop10h 25m
Alaska Airlines
Deal found 3/18$340
This Alaska Airlines deal was found by Cheapflights users on 3/18. 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.
Mon 5/46:22 pm
HLN
-
OAK
1 stop19h 53m
Alaska Airlines
Tue 5/126:20 am
OAK
-
HLN
1 stop10h 25m
Alaska Airlines
Deal found 3/18$343
This Alaska Airlines deal was found by Cheapflights users on 3/19. 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 5/76:22 pm
HLN
-
OAK
1 stop5h 10m
Alaska Airlines
Tue 5/126:20 am
OAK
-
HLN
1 stop10h 25m
Alaska Airlines
Deal found 3/19$346
This Alaska Airlines deal was found by Cheapflights users on 3/19. 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 5/76:22 pm
HLN
-
OAK
1 stop5h 10m
Alaska Airlines
Sun 5/106:20 am
OAK
-
HLN
1 stop10h 25m
Alaska Airlines
Deal found 3/19$349
This Alaska Airlines deal was found by Cheapflights users on 3/18. 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.
Tue 4/286:22 pm
HLN
-
OAK
1 stop5h 10m
Alaska Airlines
Sat 5/22:09 pm
OAK
-
HLN
1 stop26h 36m
Alaska Airlines
Deal found 3/18$350
This Alaska Airlines deal was found by Cheapflights users on 3/18. 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.
Mon 5/46:22 pm
HLN
-
OAK
1 stop19h 53m
Alaska Airlines
Sun 5/106:20 am
OAK
-
HLN
1 stop10h 25m
Alaska Airlines
Deal found 3/18$353
This Alaska Airlines deal was found by Cheapflights users on 3/19. 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.
Tue 5/56:22 pm
HLN
-
OAK
1 stop5h 10m
Alaska Airlines
Sat 5/96:20 am
OAK
-
HLN
1 stop10h 25m
Alaska Airlines
Deal found 3/19$356
This Delta deal was found by Cheapflights users on 3/19. 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.
Tue 5/55:40 am
HLN
-
OAK
1 stop7h 13m
Delta
Wed 5/135:05 pm
OAK
-
HLN
1 stop4h 28m
Delta
Deal found 3/19$364

Find 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 March 23, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$329
(Delta)

One-way from

$169
(Alaska Airlines)

Popular in

June

Cheapest in

December

Average price

$515
Provider with most accurate pricing for Helena-Oakland flight deals.
Search Deals
Provider most trusted by Cheapflights users for Helena-Oakland flights.
Search Deals
From Helena to Oakland
Search Deals
One-way flight from Helena to Oakland
Search Deals
Highest demand for flights based on searches. 21% potential increase in price ($101 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 6% potential price decrease ($23 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in March 2026
Search Deals

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 March 23, 2026.
Use the filters below to find and compare flights from Helena to Oakland that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip
Quickest round-trip

HelenaOakland

HLN - OAK

HLNOAK

Helena

Tue 5/5

5:40 am-11:53 am

1 stop7h 13m

Oakland

Tue 5/12

6:00 am-12:23 pm

1 stop5h 23m

$329

HelenaOakland

HLN - OAK

HLNOAK

Helena

Wed 5/6

6:22 pm-10:32 pm

1 stop5h 10m

Oakland

Sat 5/9

6:20 am-5:45 pm

1 stop10h 25m

$336

HelenaOakland

HLN - OAK

HLNOAK

Helena

Sat 5/2

6:22 pm-10:32 pm

1 stop5h 10m

Oakland

Tue 5/5

6:20 am-5:45 pm

1 stop10h 25m

$336

HelenaOakland

HLN - OAK

HLNOAK

Helena

Sat 5/9

6:22 pm-10:32 pm

1 stop5h 10m

Oakland

Wed 5/13

7:00 am-4:06 pm

1 stop8h 06m

$370

HelenaOakland

HLN - OAK

HLNOAK

Helena

Sat 5/2

6:22 pm-10:32 pm

1 stop5h 10m

Oakland

Wed 5/6

6:20 am-5:45 pm

1 stop10h 25m

$370

HelenaOakland

HLN - OAK

HLNOAK

Helena

Mon 5/4

6:22 pm-1:15 pm

1 stop19h 53m

Oakland

Wed 5/13

7:00 am-4:06 pm

1 stop8h 06m

$373

HelenaOakland

HLN - OAK

HLNOAK

Helena

Mon 4/27

6:22 pm-1:15 pm

1 stop19h 53m

Oakland

Wed 5/6

6:20 am-5:45 pm

1 stop10h 25m

$373
Cheapest one-way

HelenaOakland

HLN - OAK

HLNOAK

Helena

Tue 4/7

6:22 pm-11:43 pm

1 stop6h 21m

$312

HelenaOakland

HLN - OAK

HLNOAK

Helena

Mon 4/6

6:22 pm-5:46 pm

1 stop24h 24m

$417
Quickest one-way

HelenaOakland

HLN - OAK

HLNOAK

Helena

Sun 7/5

12:50 pm-4:31 pm

1 stop4h 41m

$618

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/22

Sorted by cheapest first

Compare providers for flights from Helena to Oakland

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Helena to Oakland in March.
ProviderPrice AccuracyTrust Score*
FlightHubPrice Accuracy3 starsTrust Score*3 stars
ExpediaPrice Accuracy1 starTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Helena-Oakland, California flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Helena-Oakland, California flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Helena-Oakland, California flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Helena-Oakland, California 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 Helena-Oakland, California 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 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, July is the cheapest month in which you can book a flight from Helena to Oakland, California (average of $41). Flying from Helena to Oakland, California in May is currently the most expensive (average of $219). 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 Helena to Oakland. 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 Helena to Oakland, California?

    There are many flights that can get you from Helena to Oakland, California in 5h 10m. Fly via Delta or Alaska Airlines to get the fastest option. Airlines will cover a distance of 806 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Helena to Oakland 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 Helena to Oakland, California?

    Currently, July is the cheapest month in which you can book a flight from Helena to Oakland, California (average of $41). Flying from Helena to Oakland, California in May is currently the most expensive (average of $219). 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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