Latest deals
Insights
When to book
FAQs
Reviews
Price Alerts

Cheap flights from Helena to San Diego from $293

1 adult
1 adult, Economy, 0 bags

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Helena to San Diego

Cheap round-trip flights

Enter your travel dates to find the best prices.
Alaska Airlines Logo
4:08 pm - 8:56 pmHLN  Helena-SAN San Diego
5h 48m1 stop Seattle/Tacoma Intl
Alaska Airlines Logo
9:00 am - 3:31 pmSAN  San Diego-HLN Helena
5h 31m1 stop Seattle/Tacoma Intl
$323Alaska Airlines
Sat, Dec 5 - Wed, Dec 9
Alaska Airlines Logo
4:08 pm - 8:56 pmHLN  Helena-SAN San Diego
5h 48m1 stop Seattle/Tacoma Intl
Alaska Airlines Logo
9:00 am - 3:31 pmSAN  San Diego-HLN Helena
5h 31m1 stop Seattle/Tacoma Intl
$363Alaska Airlines
Sat, Dec 5 - Wed, Dec 9
Alaska Airlines Logo
4:08 pm - 10:04 amHLN  Helena-SAN San Diego
18h 56m2 stops Seattle/Tacoma Intl San Francisco
Alaska Airlines Logo
9:00 am - 3:31 pmSAN  San Diego-HLN Helena
5h 31m1 stop Seattle/Tacoma Intl
$371Alaska Airlines
Sat, Dec 5 - Wed, Dec 9
Alaska Airlines Logo
4:08 pm - 8:56 pmHLN  Helena-SAN San Diego
5h 48m1 stop Seattle/Tacoma Intl
Alaska Airlines Logo
6:15 am - 3:31 pmSAN  San Diego-HLN Helena
8h 16m2 stops San Francisco Seattle/Tacoma Intl
$371Alaska Airlines
Sat, Dec 5 - Wed, Dec 9
Alaska Airlines Logo
4:41 pm - 10:35 pmHLN  Helena-SAN San Diego
6h 54m1 stop Seattle/Tacoma Intl
Alaska Airlines Logo
9:30 pm - 4:04 pmSAN  San Diego-HLN Helena
17h 34m2 stops Oakland Seattle/Tacoma Intl
$371Alaska Airlines
Wed, Nov 11 - Mon, Nov 16
Alaska Airlines Logo
4:08 pm - 8:56 pmHLN  Helena-SAN San Diego
5h 48m1 stop Seattle/Tacoma Intl
Alaska Airlines Logo
9:00 am - 3:31 pmSAN  San Diego-HLN Helena
5h 31m1 stop Seattle/Tacoma Intl
$373Alaska Airlines
Sat, Dec 5 - Wed, Dec 9
Alaska Airlines Logo
4:41 pm - 10:35 pmHLN  Helena-SAN San Diego
6h 54m1 stop Seattle/Tacoma Intl
Alaska Airlines Logo
6:22 pm - 4:04 pmSAN  San Diego-HLN Helena
20h 42m1 stop Seattle/Tacoma Intl
$373Alaska Airlines
Wed, Nov 11 - Mon, Nov 16
Alaska Airlines Logo
4:08 pm - 8:56 pmHLN  Helena-SAN San Diego
5h 48m1 stop Seattle/Tacoma Intl
Alaska Airlines Logo
9:00 am - 3:31 pmSAN  San Diego-HLN Helena
5h 31m1 stop Seattle/Tacoma Intl
$375Alaska Airlines
Sat, Dec 5 - Wed, Dec 9
Delta Logo
7:15 am - 12:30 pmHLN  Helena-SAN San Diego
6h 15m1 stop Salt Lake City
Delta Logo
6:15 am - 12:17 pmSAN  San Diego-HLN Helena
5h 02m1 stop Salt Lake City
$585Delta
Fri, Sep 11 - Sun, Sep 13
Delta Logo
7:15 am - 3:01 pmHLN  Helena-SAN San Diego
8h 46m2 stops Salt Lake City Los Angeles
Delta Logo
6:15 am - 12:17 pmSAN  San Diego-HLN Helena
5h 02m1 stop Salt Lake City
$590Delta
Fri, Sep 11 - Sun, Sep 13

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 San Diego

Our best Alaska Airlines deals on Helena to San Diego flight tickets
Alaska Airlines
Dec 5
HLN4:08 pmHelena
5h 48m
1 stop
SAN8:56 pmSan Diego
Dec 9
SAN9:00 amSan Diego
5h 31m
1 stop
HLN3:31 pmHelena
$323
Alaska Airlines
Dec 5
HLN4:08 pmHelena
5h 48m
1 stop
SAN8:56 pmSan Diego
Dec 9
SAN9:00 amSan Diego
5h 31m
1 stop
HLN3:31 pmHelena
$363
Alaska Airlines
Dec 5
HLN4:08 pmHelena
5h 48m
1 stop
SAN8:56 pmSan Diego
Dec 9
SAN6:15 amSan Diego
8h 16m
2 stops
HLN3:31 pmHelena
$371

Delta flights from Helena to San Diego

Our best Delta deals on Helena to San Diego flight tickets
Delta
Sep 11
HLN7:15 amHelena
6h 15m
1 stop
SAN12:30 pmSan Diego
Sep 13
SAN6:15 amSan Diego
5h 02m
1 stop
HLN12:17 pmHelena
$585
Delta
Sep 11
HLN7:15 amHelena
8h 46m
2 stops
SAN3:01 pmSan Diego
Sep 13
SAN6:15 amSan Diego
5h 02m
1 stop
HLN12:17 pmHelena
$590
Delta
Sep 11
HLN7:15 amHelena
6h 15m
1 stop
SAN12:30 pmSan Diego
Sep 13
SAN6:15 amSan Diego
5h 02m
1 stop
HLN12:17 pmHelena
$655

momondo Fare Finder

 
Use the filters below to find and compare flights from Helena to San Diego that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

HelenaSan Diego

HLN Helena - SAN San Diego

HLNSAN

Helena

Sat 12/5

4:08 pm-8:56 pm

1 stop5h 48m

San Diego

Wed 12/9

9:00 am-3:31 pm

1 stop5h 31m

$323

HelenaSan Diego

HLN Helena - SAN San Diego

HLNSAN

Helena

Sat 12/5

4:08 pm-8:56 pm

1 stop5h 48m

San Diego

Wed 12/9

9:00 am-3:31 pm

1 stop5h 31m

$363

HelenaSan Diego

HLN Helena - SAN San Diego

HLNSAN

Helena

Sat 12/5

4:08 pm-10:04 am

2 stops18h 56m

San Diego

Wed 12/9

9:00 am-3:31 pm

1 stop5h 31m

$371

HelenaSan Diego

HLN Helena - SAN San Diego

HLNSAN

Helena

Sat 12/5

4:08 pm-8:56 pm

1 stop5h 48m

San Diego

Wed 12/9

6:15 am-3:31 pm

2 stops8h 16m

$371

HelenaSan Diego

HLN Helena - SAN San Diego

HLNSAN

Helena

Wed 11/11

4:41 pm-10:35 pm

1 stop6h 54m

San Diego

Mon 11/16

9:30 pm-4:04 pm

2 stops17h 34m

$371

HelenaSan Diego

HLN Helena - SAN San Diego

HLNSAN

Helena

Sat 12/5

4:08 pm-8:56 pm

1 stop5h 48m

San Diego

Wed 12/9

9:00 am-3:31 pm

1 stop5h 31m

$373

HelenaSan Diego

HLN Helena - SAN San Diego

HLNSAN

Helena

Wed 11/11

4:41 pm-10:35 pm

1 stop6h 54m

San Diego

Mon 11/16

6:22 pm-4:04 pm

1 stop20h 42m

$373

HelenaSan Diego

HLN Helena - SAN San Diego

HLNSAN

Helena

Sat 12/5

4:08 pm-8:56 pm

1 stop5h 48m

San Diego

Wed 12/9

9:00 am-3:31 pm

1 stop5h 31m

$375
Quickest round-trip

HelenaSan Diego

HLN Helena - SAN San Diego

HLNSAN

Helena

Fri 9/11

7:15 am-12:30 pm

1 stop6h 15m

San Diego

Sun 9/13

6:15 am-12:17 pm

1 stop5h 02m

$585

HelenaSan Diego

HLN Helena - SAN San Diego

HLNSAN

Helena

Fri 9/11

7:15 am-3:01 pm

2 stops8h 46m

San Diego

Sun 9/13

6:15 am-12:17 pm

1 stop5h 02m

$590

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 13 resultsSorted by cheapest first
1
2

See travel insights to San Diego from

How to get the cheapest flight ticket from Helena to San Diego

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

Can stopping save me money on Helena to San Diego flights?

You could potentially save up to 9% on your flight if you consider stops on a Helena to San Diego flight.

When to book flights from Helena to San Diego

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

Cheap Helena to San Diego (HLN to SAN) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Helena to San Diego

Best Price Found

$293

Fastest flight time

4h 01m

Direct flights

None
The best one-way flight to San Diego from Helena in the past 72 hours is $293. The best round-trip flight deal from Helena to San Diego found on momondo in the last 72 hours is $323.
The fastest flight from Helena to San Diego takes 4h 01m
There are no direct flights from Helena to San Diego. There are no popular flight routes from Helena to San Diego.
Search flight deals

Frequently asked questions about flying from Helena to San Diego

  • How far is Helena to San Diego by plane?

    The distance between Helena and San Diego is about 995.5 mi. A reasonable flight in good conditions will take 4h 01m.

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

    Prices for flights from Helena Airport to San Diego Airport were last updated today.

  • How many operators does momondo search for flights from Helena Airport to San Diego Airport?

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

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Helena Airport to San Diego Airport.

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

    The necessary travel and health documents for your San Diego Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

  • What is the most popular airline from Helena to San Diego?

Best airlines flying from Helena to San Diego

Compare and see reviews for airlines that fly from Helena to San Diego with momondo
Airline
Rating
Free Cancellation
Price
DeltaPriceFrom $306Free CancellationRating
7.8
8,517 reviews
Search Delta flights

Traveling to a place near San Diego?

Book flights to San Diego if you plan to visit one of these locations
Chula Vista
Coronado
El Cajon
National City
Julian
La Mesa
Poway
San Ysidro
Imperial Beach
Santee
Borrego Springs
Lemon Grove
Alpine

Why use momondo?

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

It is quick and easy to find Helena to San Diego flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to San Diego that suits you.

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

Flights from Helena to San Diego with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

How can momondo help me find flights from Helena to San Diego?

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Helena to San Diego.

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

If you are not ready to book a flight from Helena to San Diego now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to San Diego and let you know when they change.

An easier way to manage your San Diego 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
Wed 9/23
Wed 9/30
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to the United States