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Helena

$197+ 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 10/15. Fares are subject to change and may not be available on all flights or dates of travel.
OAK — HLN
Oct 16 — Oct 231
Thu 10/16
Thu 10/23
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 September 16, 2025.

Round-trip from

$242
(Alaska Airlines)

One-way from

$197
(Alaska Airlines)

Popular in

March

Cheapest in

October

Average price

$736
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. 25% potential increase in price ($201 potential increase over avg. RT price).
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Cheapest flight prices on average. 9% potential price decrease ($50 potential savings vs. average RT price).
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Average for round-trip flights in September 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 September 16, 2025.

This Alaska Airlines deal was found by Cheapflights users on 9/15. 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 10/218:05 pmOAK - HLN
1 stop20h 36mAlaska Airlines
Sat 10/256:18 pmHLN - OAK
1 stop6h 45mAlaska Airlines
Deal found 9/15$242
This Delta deal was found by Cheapflights users on 9/14. 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.
Thu 12/115:45 amOAK - HLN
1 stop5h 41mDelta
Sun 12/145:30 amHLN - OAK
1 stop7h 20mDelta
Deal found 9/14$457
This Alaska Airlines deal was found by Cheapflights users on 9/15. 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 9/309:39 amOAK - HLN
1 stop4h 42mAlaska Airlines
Sat 10/46:18 pmHLN - OAK
1 stop6h 45mAlaska Airlines
Deal found 9/15$574
This Alaska Airlines deal was found by Cheapflights users on 9/15. 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 9/239:39 amOAK - HLN
1 stop4h 42mAlaska Airlines
Mon 9/294:02 pmHLN - OAK
1 stop7h 01mAlaska Airlines
Deal found 9/15$705
This Alaska Airlines deal was found by Cheapflights users on 9/15. 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 9/227:58 pmOAK - HLN
1 stop18h 23mAlaska Airlines
Mon 9/294:02 pmHLN - OAK
1 stop7h 01mAlaska Airlines
Deal found 9/15$713
This Alaska Airlines deal was found by Cheapflights users on 9/15. 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 9/179:39 amOAK - HLN
1 stop4h 42mAlaska Airlines
Mon 9/294:02 pmHLN - OAK
1 stop7h 01mAlaska Airlines
Deal found 9/15$785
This Alaska Airlines deal was found by Cheapflights users on 9/15. 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.
Sat 9/207:58 pmOAK - HLN
1 stop18h 23mAlaska Airlines
Mon 9/294:02 pmHLN - OAK
1 stop7h 01mAlaska Airlines
Deal found 9/15$793
This Alaska Airlines deal was found by Cheapflights users on 9/15. 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 9/239:39 amOAK - HLN
1 stop4h 42mAlaska Airlines
Sat 9/274:02 pmHLN - OAK
1 stop7h 01mAlaska Airlines
Deal found 9/15$836

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 September 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 10/21

8:05 pm-5:41 pm

1 stop20h 36m

Helena

Sat 10/25

6:18 pm-12:03 am

1 stop6h 45m

$242

OaklandHelena

OAK - HLN

OAKHLN

Oakland

Wed 3/4

5:55 am-12:27 pm

1 stop5h 32m

Helena

Thu 3/12

12:50 pm-4:34 pm

1 stop4h 44m

$391

OaklandHelena

OAK - HLN

OAKHLN

Oakland

Tue 3/10

5:55 am-12:27 pm

1 stop5h 32m

Helena

Sat 3/14

12:50 pm-4:34 pm

1 stop4h 44m

$409

OaklandHelena

OAK - HLN

OAKHLN

Oakland

Sun 3/8

5:55 am-12:27 pm

1 stop5h 32m

Helena

Sat 3/14

12:50 pm-4:34 pm

1 stop4h 44m

$439

OaklandHelena

OAK - HLN

OAKHLN

Oakland

Mon 3/9

5:55 am-12:27 pm

1 stop5h 32m

Helena

Sat 3/14

12:50 pm-4:34 pm

1 stop4h 44m

$439

OaklandHelena

OAK - HLN

OAKHLN

Oakland

Fri 3/6

5:55 am-12:27 pm

1 stop5h 32m

Helena

Sat 3/14

12:50 pm-4:34 pm

1 stop4h 44m

$448

OaklandHelena

OAK - HLN

OAKHLN

Oakland

Thu 12/11

5:45 am-12:26 pm

1 stop5h 41m

Helena

Sun 12/14

5:30 am-11:50 am

1 stop7h 20m

$457

OaklandHelena

OAK - HLN

OAKHLN

Oakland

Tue 3/10

5:55 am-12:27 pm

1 stop5h 32m

Helena

Thu 3/12

12:50 pm-4:34 pm

1 stop4h 44m

$459

OaklandHelena

OAK - HLN

OAKHLN

Oakland

Sat 3/7

8:00 am-3:43 pm

2 stops6h 43m

Helena

Thu 3/12

4:10 pm-9:08 am

1 stop17h 58m

$489

OaklandHelena

OAK - HLN

OAKHLN

Oakland

Sun 3/8

5:55 am-12:27 pm

1 stop5h 32m

Helena

Thu 3/12

12:50 pm-4:34 pm

1 stop4h 44m

$489

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/15

Showing 1-10 of 16 results
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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.

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 32m. Airlines will cover a distance of 806 mi. This flight may include one or multiple stops.

  • 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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