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Cheap flights from Helena to San Francisco from $312

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 4/7. 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.
Alaska Airlines Logo
6:22 pm - 10:32 pm
HLN
-
OAK
5h 10m
1 stop
Alaska Airlines Logo
9:53 am - 5:45 pm
OAK
-
HLN
6h 52m
1 stop
$329Alaska Airlines
Sat, May 2 - Tue, May 5
Alaska Airlines Logo
6:22 pm - 10:32 pm
HLN
-
OAK
5h 10m
1 stop
Alaska Airlines Logo
6:20 am - 5:45 pm
OAK
-
HLN
10h 25m
1 stop
$336Alaska Airlines
Sat, May 2 - Tue, May 5
Alaska Airlines Logo
6:22 pm - 10:32 pm
HLN
-
OAK
5h 10m
1 stop
Alaska Airlines Logo
6:46 am - 5:45 pm
OAK
-
HLN
9h 59m
2 stops
$364Alaska Airlines
Sat, May 2 - Tue, May 5
Alaska Airlines Logo
6:22 pm - 10:32 pm
HLN
-
OAK
5h 10m
1 stop
Alaska Airlines Logo
6:20 am - 5:45 pm
OAK
-
HLN
10h 25m
1 stop
$371Alaska Airlines
Sat, May 2 - Tue, May 5
Alaska Airlines Logo
6:22 pm - 10:32 pm
HLN
-
OAK
5h 10m
1 stop
Alaska Airlines Logo
6:46 am - 5:45 pm
OAK
-
HLN
9h 59m
2 stops
$376Alaska Airlines
Sat, May 2 - Tue, May 5
Alaska Airlines Logo
6:22 pm - 8:53 am
HLN
-
OAK
15h 31m
2 stops
Alaska Airlines Logo
6:46 am - 5:45 pm
OAK
-
HLN
9h 59m
2 stops
$468Alaska Airlines
Sat, May 2 - Tue, May 5
Alaska Airlines Logo
4:43 pm - 9:56 am
HLN
-
OAK
18h 13m
1 stop
Alaska Airlines Logo
10:29 am - 4:06 pm
OAK
-
HLN
28h 37m
2 stops
$479Alaska Airlines
Fri, May 15 - Mon, May 18
Alaska Airlines Logo
6:22 pm - 10:17 am
HLN
-
OAK
40h 55m
2 stops
Alaska Airlines Logo
6:46 am - 5:45 pm
OAK
-
HLN
9h 59m
2 stops
$480Alaska Airlines
Sat, May 2 - Tue, May 5
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
$514Alaska Airlines
Fri, May 15 - Mon, May 18
Alaska Airlines Logo
6:22 pm - 10:17 am
HLN
-
OAK
40h 55m
2 stops
Alaska Airlines Logo
6:46 am - 5:45 pm
OAK
-
HLN
9h 59m
2 stops
$521Alaska Airlines
Sat, May 2 - Tue, May 5

Alaska Airlines flights from Helena to Oakland, California

Our best Alaska Airlines deals on Helena to Oakland, California flight tickets
Alaska Airlines
May 2
HLN6:22 pmHelena
5h 10m
1 stop
OAK10:32 pmOakland
May 5
OAK9:53 amOakland
6h 52m
1 stop
HLN5:45 pmHelena
$329
Alaska Airlines
May 2
HLN6:22 pmHelena
5h 10m
1 stop
OAK10:32 pmOakland
May 5
OAK6:20 amOakland
10h 25m
1 stop
HLN5:45 pmHelena
$336
Alaska Airlines
May 2
HLN6:22 pmHelena
5h 10m
1 stop
OAK10:32 pmOakland
May 5
OAK6:46 amOakland
9h 59m
2 stops
HLN5:45 pmHelena
$364

Delta flights from Helena to Oakland, California

Our best Delta deals on Helena to Oakland, California flight tickets
Delta
May 15
HLN1:03 pmHelena
4h 22m
1 stop
OAK4:25 pmOakland
May 17
OAK6:00 amOakland
5h 23m
1 stop
HLN12:23 pmHelena
$561
Delta
May 14
HLN1:03 pmHelena
11h 54m
1 stop
OAK11:57 pmOakland
May 18
OAK6:00 amOakland
15h 33m
1 stop
HLN10:33 pmHelena
$579
Delta
Apr 3
HLN5:30 amHelena
7h 21m
1 stop
OAK11:51 amOakland
Apr 28
OAK5:55 amOakland
5h 29m
1 stop
HLN12:24 pmHelena
$622

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 March 27, 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

Sat 5/2

6:22 pm-10:32 pm

1 stop5h 10m

Oakland

Tue 5/5

9:53 am-5:45 pm

1 stop6h 52m

$329

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 5/2

6:22 pm-10:32 pm

1 stop5h 10m

Oakland

Tue 5/5

6:46 am-5:45 pm

2 stops9h 59m

$364

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

$371

HelenaOakland

HLN - OAK

HLNOAK

Helena

Sat 5/2

6:22 pm-10:32 pm

1 stop5h 10m

Oakland

Tue 5/5

6:46 am-5:45 pm

2 stops9h 59m

$376

HelenaOakland

HLN - OAK

HLNOAK

Helena

Sat 5/2

6:22 pm-8:53 am

2 stops15h 31m

Oakland

Tue 5/5

6:46 am-5:45 pm

2 stops9h 59m

$468

HelenaOakland

HLN - OAK

HLNOAK

Helena

Fri 5/15

4:43 pm-9:56 am

1 stop18h 13m

Oakland

Mon 5/18

10:29 am-4:06 pm

2 stops28h 37m

$479

HelenaOakland

HLN - OAK

HLNOAK

Helena

Sat 5/2

6:22 pm-10:17 am

2 stops40h 55m

Oakland

Tue 5/5

6:46 am-5:45 pm

2 stops9h 59m

$480

HelenaOakland

HLN - OAK

HLNOAK

Helena

Fri 5/15

4:43 pm-11:59 pm

1 stop8h 16m

Oakland

Mon 5/18

7:00 am-4:06 pm

1 stop8h 06m

$514

HelenaOakland

HLN - OAK

HLNOAK

Helena

Sat 5/2

6:22 pm-10:17 am

2 stops40h 55m

Oakland

Tue 5/5

6:46 am-5:45 pm

2 stops9h 59m

$521

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 15 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?

Alaska Airlines is the most popular carrier operating from Helena to Oakland

What airlines fly to Oakland, California?

Alaska Airlines, United Airlines and Delta are the top three most popular airlines that fly to Oakland, California from Helena according to our data. Alaska Airlines is the first choice among our users, with 36% of people opting to fly with this airline when traveling to Oakland, California. Keep in mind that there are 5 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

5h 10m

Direct flights

None
The fastest flight from Helena to Oakland, California takes 5h 10m
There are no direct flights from Helena to Oakland, California. There are no popular flight routes from Helena to Oakland, California.
Search flight deals

  • How far is Helena to Oakland by plane?

    There are 800.0 mi between Helena and Oakland. Typically, this will take 5h 10m 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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