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Cheap flights from Helena to San Francisco from $185

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Helena to San Francisco departing on 6/6. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

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Find the cheapest flights from Helena to San Francisco

Cheap round-trip flights

Enter your travel dates to find the best prices.
Delta Logo
1:03 pm - 4:25 pm
HLN
-
OAK
4h 22m
1 stop
Delta Logo
6:00 am - 12:20 pm
OAK
-
HLN
5h 20m
1 stop
$436Delta
Fri, Jun 5 - Mon, Jun 8
Alaska Airlines Logo
4:43 pm - 9:56 am
HLN
-
OAK
18h 13m
1 stop
Alaska Airlines Logo
2:58 pm - 4:06 pm
OAK
-
HLN
24h 08m
2 stops
$446Alaska Airlines
Fri, Jun 5 - Mon, Jun 8
Alaska Airlines Logo
4:43 pm - 11:59 pm
HLN
-
OAK
8h 16m
1 stop
Alaska Airlines Logo
7:00 am - 4:06 pm
OAK
-
HLN
8h 06m
1 stop
$451Alaska Airlines
Thu, Jun 4 - Mon, Jun 8
Alaska Airlines Logo
4:43 pm - 11:59 pm
HLN
-
OAK
8h 16m
1 stop
Alaska Airlines Logo
2:58 pm - 4:06 pm
OAK
-
HLN
24h 08m
2 stops
$456Alaska Airlines
Thu, Jun 4 - Mon, Jun 8
Alaska Airlines Logo
4:43 pm - 11:50 pm
HLN
-
OAK
32h 07m
2 stops
Alaska Airlines Logo
2:58 pm - 4:06 pm
OAK
-
HLN
24h 08m
2 stops
$461Alaska Airlines
Thu, Jun 4 - Mon, Jun 8
Alaska Airlines Logo
5:11 pm - 10:54 pm
HLN
-
OAK
6h 43m
1 stop
Alaska Airlines Logo
10:05 am - 4:34 pm
OAK
-
HLN
5h 29m
1 stop
$465Alaska Airlines
Tue, Aug 25 - Wed, Aug 26
Alaska Airlines Logo
5:11 pm - 10:54 pm
HLN
-
OAK
6h 43m
1 stop
Alaska Airlines Logo
8:04 am - 4:34 pm
OAK
-
HLN
7h 30m
2 stops
$493Alaska Airlines
Tue, Aug 25 - Wed, Aug 26
Alaska Airlines Logo
5:11 pm - 10:54 pm
HLN
-
OAK
6h 43m
1 stop
Alaska Airlines Logo
8:04 am - 4:34 pm
OAK
-
HLN
7h 30m
2 stops
$508Alaska Airlines
Tue, Aug 25 - Wed, Aug 26
Alaska Airlines Logo
5:11 pm - 2:20 pm
HLN
-
OAK
22h 09m
2 stops
Alaska Airlines Logo
5:10 pm - 4:34 pm
OAK
-
HLN
22h 24m
2 stops
$556Alaska Airlines
Tue, Aug 25 - Wed, Aug 26
Alaska Airlines Logo
5:09 pm - 9:26 am
HLN
-
OAK
17h 17m
1 stop
Alaska Airlines Logo
6:22 am - 4:32 pm
OAK
-
HLN
9h 10m
1 stop
$561Alaska Airlines
Wed, Jul 8 - Sun, Jul 12

Alaska Airlines flights from Helena to Oakland, California

Our best Alaska Airlines deals on Helena to Oakland, California flight tickets
Alaska Airlines
Jun 5
HLN4:43 pmHelena
18h 13m
1 stop
OAK9:56 amOakland
Jun 8
OAK2:58 pmOakland
24h 08m
2 stops
HLN4:06 pmHelena
$446
Alaska Airlines
Jun 4
HLN4:43 pmHelena
8h 16m
1 stop
OAK11:59 pmOakland
Jun 8
OAK7:00 amOakland
8h 06m
1 stop
HLN4:06 pmHelena
$451
Alaska Airlines
Jun 4
HLN4:43 pmHelena
8h 16m
1 stop
OAK11:59 pmOakland
Jun 8
OAK2:58 pmOakland
24h 08m
2 stops
HLN4:06 pmHelena
$456

Delta flights from Helena to Oakland, California

Our best Delta deals on Helena to Oakland, California flight tickets
Delta
Jun 5
HLN1:03 pmHelena
4h 22m
1 stop
OAK4:25 pmOakland
Jun 8
OAK6:00 amOakland
5h 20m
1 stop
HLN12:20 pmHelena
$436
Delta
May 23
HLN1:03 pmHelena
4h 22m
1 stop
OAK4:25 pmOakland
May 27
OAK6:00 amOakland
5h 23m
1 stop
HLN12:23 pmHelena
$715
Delta
May 29
HLN5:45 amHelena
7h 03m
1 stop
OAK11:48 amOakland
May 31
OAK5:05 pmOakland
4h 28m
1 stop
HLN10:33 pmHelena
$1,109

momondo Fare Finder

 
Customize your flight search to find flights from Helena to Oakland, California 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, momondo users made 832,500 searches. Data last updated May 12, 2026.
Use the filters below to find and compare flights from Helena to Oakland, California that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip
Quickest round-trip

HelenaOakland

HLN - OAK

HLNOAK

Helena

Fri 6/5

1:03 pm-4:25 pm

1 stop4h 22m

Oakland

Mon 6/8

6:00 am-12:20 pm

1 stop5h 20m

$436

HelenaOakland

HLN - OAK

HLNOAK

Helena

Fri 6/5

4:43 pm-9:56 am

1 stop18h 13m

Oakland

Mon 6/8

2:58 pm-4:06 pm

2 stops24h 08m

$446

HelenaOakland

HLN - OAK

HLNOAK

Helena

Thu 6/4

4:43 pm-11:59 pm

1 stop8h 16m

Oakland

Mon 6/8

7:00 am-4:06 pm

1 stop8h 06m

$451

HelenaOakland

HLN - OAK

HLNOAK

Helena

Thu 6/4

4:43 pm-11:59 pm

1 stop8h 16m

Oakland

Mon 6/8

2:58 pm-4:06 pm

2 stops24h 08m

$456

HelenaOakland

HLN - OAK

HLNOAK

Helena

Thu 6/4

4:43 pm-11:50 pm

2 stops32h 07m

Oakland

Mon 6/8

2:58 pm-4:06 pm

2 stops24h 08m

$461

HelenaOakland

HLN - OAK

HLNOAK

Helena

Tue 8/25

5:11 pm-10:54 pm

1 stop6h 43m

Oakland

Wed 8/26

10:05 am-4:34 pm

1 stop5h 29m

$465

HelenaOakland

HLN - OAK

HLNOAK

Helena

Tue 8/25

5:11 pm-10:54 pm

1 stop6h 43m

Oakland

Wed 8/26

8:04 am-4:34 pm

2 stops7h 30m

$493

HelenaOakland

HLN - OAK

HLNOAK

Helena

Tue 8/25

5:11 pm-10:54 pm

1 stop6h 43m

Oakland

Wed 8/26

8:04 am-4:34 pm

2 stops7h 30m

$508

HelenaOakland

HLN - OAK

HLNOAK

Helena

Tue 8/25

5:11 pm-2:20 pm

2 stops22h 09m

Oakland

Wed 8/26

5:10 pm-4:34 pm

2 stops22h 24m

$556

HelenaOakland

HLN - OAK

HLNOAK

Helena

Wed 7/8

5:09 pm-9:26 am

1 stop17h 17m

Oakland

Sun 7/12

6:22 am-4:32 pm

1 stop9h 10m

$561

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to San Francisco from

How to get the cheapest flight ticket from Helena to Oakland, California

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest airline that flies from Helena to Oakland?

Delta and Alaska Airlines are the most popular carriers operating from Helena to Oakland

What airlines fly to Oakland, California?

United Airlines, Alaska Airlines and Delta are the top three most popular airlines that fly to Oakland, California from Helena according to our data. United Airlines is the first choice among our users, with 38% of people opting to fly with this airline when traveling to Oakland, California. Keep in mind that there are 4 different airlines that fly to Oakland, California on a routine basis, so you have a few additional options to choose from.

When to book flights from Helena to Oakland, California

Are you open to changing your travel dates? Check out the ideal times to fly from Helena to Oakland, California according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Helena to Oakland, California (HLN to OAK) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Helena to Oakland, California

Fastest flight time

7h 03m

Direct flights

None
The fastest flight from Helena to Oakland, California takes 7h 03m
There are no direct flights from Helena to Oakland, California. There are no popular flight routes from Helena to Oakland, California.
Search flight deals

Frequently asked questions about flying from Helena to Oakland, California

  • How far is Helena to Oakland by plane?

    There are 800.0 mi between Helena and Oakland. Typically, this will take 7h 03m by plane in normal conditions.

  • When did momondo last update prices for flights from Helena Airport to Oakland Airport?

    Prices for flights from Helena Airport to Oakland Airport are updated daily.

  • How old do you have to be to fly from Helena Airport to Oakland Airport?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Helena Airport to Oakland Airport.

  • What documentation or ID do you need to fly to Oakland Airport?

    The required travel and health documents for your Oakland Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Oakland Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

Why use momondo?

Why should I use momondo to find a flight deal from Helena to Oakland?

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Helena to Oakland. momondo saves you time and could save you money on your trip.

Can I find flights from Helena to Oakland with flexible booking policies on momondo?

Yes. momondo enables you to select and highlight flights to Oakland from Helena with this policy.

How can momondo help me find flights from Helena to Oakland?

Once all potential Helena to Oakland flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

I’m not ready to book a flight from Helena to Oakland right now. Can momondo alert me if prices change?

If you are simply researching potential flights to Oakland, momondo offers a useful price alert feature which will track prices for flights to Oakland from Helena and alert you when they change.

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