Latest deals
Insights
When to book
FAQs
Price Alerts

Cheap flights from Helena to San Francisco from $221

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 11/7. 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
1 adult, Economy, 0 bags

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
4:41 pm - 10:39 pmHLN  Helena-OAK Oakland
6h 58m1 stop Seattle/Tacoma Intl
Alaska Airlines Logo
7:46 pm - 4:04 pmOAK  Oakland-HLN Helena
19h 18m1 stop Seattle/Tacoma Intl
$382Alaska Airlines
Sat, Nov 14 - Tue, Nov 17
Alaska Airlines Logo
4:41 pm - 10:39 pmHLN  Helena-OAK Oakland
6h 58m1 stop Seattle/Tacoma Intl
Alaska Airlines Logo
10:00 am - 4:04 pmOAK  Oakland-HLN Helena
29h 04m2 stops San Diego Seattle/Tacoma Intl
$403Alaska Airlines
Sat, Nov 14 - Tue, Nov 17
Alaska Airlines Logo
5:18 pm - 10:54 pmHLN  Helena-OAK Oakland
6h 36m1 stop Seattle/Tacoma Intl
Alaska Airlines Logo
7:51 pm - 4:41 pmOAK  Oakland-HLN Helena
19h 50m1 stop Seattle/Tacoma Intl
$413Alaska Airlines
Wed, Sep 9 - Wed, Sep 16
Alaska Airlines Logo
4:41 pm - 11:19 pmHLN  Helena-OAK Oakland
31h 38m2 stops Seattle/Tacoma Intl San Diego
Alaska Airlines Logo
10:00 am - 4:04 pmOAK  Oakland-HLN Helena
29h 04m2 stops San Diego Seattle/Tacoma Intl
$458Alaska Airlines
Sat, Nov 14 - Tue, Nov 17
Alaska Airlines Logo
4:41 pm - 12:54 pmHLN  Helena-OAK Oakland
21h 13m1 stop Seattle/Tacoma Intl
Alaska Airlines Logo
6:00 am - 4:32 pmOAK  Oakland-HLN Helena
9h 32m1 stop Seattle/Tacoma Intl
$459Alaska Airlines
Wed, Nov 18 - Mon, Nov 23
Alaska Airlines Logo
5:18 pm - 10:54 pmHLN  Helena-OAK Oakland
6h 36m1 stop Seattle/Tacoma Intl
Alaska Airlines Logo
6:01 am - 4:41 pmOAK  Oakland-HLN Helena
9h 40m1 stop Seattle/Tacoma Intl
$463Alaska Airlines
Sat, Sep 26 - Sun, Sep 27
Alaska Airlines Logo
4:41 pm - 10:42 amHLN  Helena-OAK Oakland
19h 01m2 stops Seattle/Tacoma Intl San Diego
Alaska Airlines Logo
6:00 am - 4:32 pmOAK  Oakland-HLN Helena
9h 32m1 stop Seattle/Tacoma Intl
$464Alaska Airlines
Wed, Nov 18 - Mon, Nov 23
Delta Logo
1:09 pm - 11:56 pmHLN  Helena-OAK Oakland
11h 47m1 stop Salt Lake City
Delta Logo
5:05 pm - 10:41 pmOAK  Oakland-HLN Helena
4h 36m1 stop Salt Lake City
$465Delta
Thu, Dec 24 - Mon, Jan 4
Alaska Airlines Logo
5:18 pm - 1:19 pmHLN  Helena-OAK Oakland
21h 01m1 stop Seattle/Tacoma Intl
Alaska Airlines Logo
10:11 am - 4:41 pmOAK  Oakland-HLN Helena
5h 30m1 stop Seattle/Tacoma Intl
$473Alaska Airlines
Fri, Sep 25 - Sun, Sep 27
Alaska Airlines Logo
5:18 pm - 10:54 pmHLN  Helena-OAK Oakland
6h 36m1 stop Seattle/Tacoma Intl
Alaska Airlines Logo
3:13 pm - 4:41 pmOAK  Oakland-HLN Helena
24h 28m2 stops San Diego Seattle/Tacoma Intl
$476Alaska Airlines
Sat, Sep 26 - Sun, Sep 27

Save money when you book flights with momondo

Big names and deals

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

Alaska Airlines flights from Helena to Oakland, California

Our best Alaska Airlines deals on Helena to Oakland, California flight tickets
Alaska Airlines
Nov 14
HLN4:41 pmHelena
6h 58m
1 stop
OAK10:39 pmOakland
Nov 17
OAK7:46 pmOakland
19h 18m
1 stop
HLN4:04 pmHelena
$363
Alaska Airlines
Nov 14
HLN4:41 pmHelena
6h 58m
1 stop
OAK10:39 pmOakland
Nov 17
OAK7:46 pmOakland
19h 18m
1 stop
HLN4:04 pmHelena
$382
Alaska Airlines
Nov 14
HLN4:41 pmHelena
6h 58m
1 stop
OAK10:39 pmOakland
Nov 17
OAK10:00 amOakland
29h 04m
2 stops
HLN4:04 pmHelena
$393

Delta flights from Helena to Oakland, California

Our best Delta deals on Helena to Oakland, California flight tickets
Delta
Dec 24
HLN1:09 pmHelena
11h 47m
1 stop
OAK11:56 pmOakland
Jan 4
OAK5:05 pmOakland
4h 36m
1 stop
HLN10:41 pmHelena
$465
Delta
Dec 23
HLN1:09 pmHelena
24h 16m
1 stop
OAK12:25 pmOakland
Dec 26
OAK5:55 amOakland
5h 29m
1 stop
HLN12:24 pmHelena
$505
Delta
Dec 25
HLN5:45 amHelena
7h 40m
1 stop
OAK12:25 pmOakland
Jan 4
OAK5:55 amOakland
5h 29m
1 stop
HLN12:24 pmHelena
$648

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 August 14, 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

HelenaOakland

HLN Helena - OAK Oakland

HLNOAK

Helena

Sat 11/14

4:41 pm-10:39 pm

1 stop6h 58m

Oakland

Tue 11/17

7:46 pm-4:04 pm

1 stop19h 18m

$382

HelenaOakland

HLN Helena - OAK Oakland

HLNOAK

Helena

Sat 11/14

4:41 pm-10:39 pm

1 stop6h 58m

Oakland

Tue 11/17

10:00 am-4:04 pm

2 stops29h 04m

$403

HelenaOakland

HLN Helena - OAK Oakland

HLNOAK

Helena

Wed 9/9

5:18 pm-10:54 pm

1 stop6h 36m

Oakland

Wed 9/16

7:51 pm-4:41 pm

1 stop19h 50m

$413

HelenaOakland

HLN Helena - OAK Oakland

HLNOAK

Helena

Sat 11/14

4:41 pm-11:19 pm

2 stops31h 38m

Oakland

Tue 11/17

10:00 am-4:04 pm

2 stops29h 04m

$458

HelenaOakland

HLN Helena - OAK Oakland

HLNOAK

Helena

Wed 11/18

4:41 pm-12:54 pm

1 stop21h 13m

Oakland

Mon 11/23

6:00 am-4:32 pm

1 stop9h 32m

$459
Quickest round-trip

HelenaOakland

HLN Helena - OAK Oakland

HLNOAK

Helena

Sat 9/26

5:18 pm-10:54 pm

1 stop6h 36m

Oakland

Sun 9/27

6:01 am-4:41 pm

1 stop9h 40m

$463

HelenaOakland

HLN Helena - OAK Oakland

HLNOAK

Helena

Wed 11/18

4:41 pm-10:42 am

2 stops19h 01m

Oakland

Mon 11/23

6:00 am-4:32 pm

1 stop9h 32m

$464

HelenaOakland

HLN Helena - OAK Oakland

HLNOAK

Helena

Thu 12/24

1:09 pm-11:56 pm

1 stop11h 47m

Oakland

Mon 1/4

5:05 pm-10:41 pm

1 stop4h 36m

$465

HelenaOakland

HLN Helena - OAK Oakland

HLNOAK

Helena

Fri 9/25

5:18 pm-1:19 pm

1 stop21h 01m

Oakland

Sun 9/27

10:11 am-4:41 pm

1 stop5h 30m

$473

HelenaOakland

HLN Helena - OAK Oakland

HLNOAK

Helena

Sat 9/26

5:18 pm-10:54 pm

1 stop6h 36m

Oakland

Sun 9/27

3:13 pm-4:41 pm

2 stops24h 28m

$476

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

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?

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 41% 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

6h 36m

Direct flights

None
The fastest flight from Helena to Oakland, California takes 6h 36m
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 6h 36m 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.

An easier way to manage your Oakland, California trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Sun 9/13
Sun 9/20
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to the United States