Cheap flights from Helena to San Diego (HLN - SAN) from $268

This is the cheapest one-way flight price, found on 6/1. Prices may vary by date and flight preferences.
HLN — SAN
Jun 6 — Jun 131

How to find the cheapest flight from Helena (HLN) to San Diego (SAN)

All the information you need to plan the best HLN to SAN flight in 2023: compare Helena to San Diego flight prices with the expected peak season, weather and rainfall in San Diego.

Popular in

July

Cheapest in

March

Round-trip from

$269

One-way from

$268
High demand for flights, 47% potential price rise
Best time to find cheap flights, 31% potential price drop
From Helena to San Diego
One-way flight from Helena to San Diego

HLN - SAN

Price

$269 - $537

SAN

Temperature

57.2 - 71.6 °F

SAN

Rainfall

0 - 2.3 inches

Cheap flights from Helena to San Diego in June, July 2023

The best prices found for HLN to SAN flights for June, July
These are some of the most attractive deals on flights from Helena to San Diego in 2023. Check back soon for alternative fares.

Helena to San Diego 2023 flight deals

Cheap flights to San Diego from Helena found for this year
These are some of the most attractive deals on flights from Helena to San Diego in 2023. Check back soon for alternative fares.

Cheap Alaska Airlines flights from Helena to San Diego

Peruse some of the lowest-priced Alaska Airlines flights we've found from Helena to San Diego. Come back soon if you're not finding the exact deal you're looking for.

Cheap United Airlines flights from Helena to San Diego

To aid your search, here are some of the cheapest United Airlines flights we've found from Helena to San Diego. Deals are refreshing constantly so come back soon for more options.

One-way flights to San Diego from Helena

The cheapest one-way flights from Helena to San Diego
Take a look at some of the best available options we've come across on one-way flights from Helena to San Diego. Users needing a return flight from Helena to San Diego should utilize the search form above.

Find flights from Helena to San Diego within your budget

Use the slider to find flights from Helena to San Diego that fit your budget.

Fly from

Any airport

Fly to

Any airport

Budget

$335 - $425

Route

Depart

Return

Price

HelenaSan Diego

HLN - SAN

HLNSAN

Helena

Tue 8/29

1 stop18h 27m

San Diego

Thu 9/7

1 stop25h 10m

HelenaSan Diego

HLN - SAN

HLNSAN

Helena

Tue 8/29

2 stops12h 47m

San Diego

Fri 9/8

1 stop13h 07m

HelenaSan Diego

HLN - SAN

HLNSAN

Helena

Tue 7/4

1 stop18h 28m

San Diego

Tue 7/11

1 stop5h 13m

HelenaSan Diego

HLN - SAN

HLNSAN

Helena

Tue 7/4

1 stop25h 23m

San Diego

Tue 7/11

2 stops9h 48m

HelenaSan Diego

HLN - SAN

HLNSAN

Helena

Sat 7/1

1 stop22h 39m

San Diego

Mon 7/10

1 stop12h 35m

HelenaSan Diego

HLN - SAN

HLNSAN

Helena

Sun 9/3

1 stop13h 49m

San Diego

Wed 9/6

1 stop5h 39m

HelenaSan Diego

HLN - SAN

HLNSAN

Helena

Wed 7/5

2 stops7h 52m

San Diego

Sat 7/8

1 stop4h 03m

HelenaSan Diego

HLN - SAN

HLNSAN

Helena

Fri 7/7

1 stop7h 15m

San Diego

Tue 7/11

1 stop5h 10m

HelenaSan Diego

HLN - SAN

HLNSAN

Helena

Sun 7/2

1 stop23h 47m

San Diego

Fri 7/7

1 stop12h 35m

Flights are sorted by cheapest first

Deals found on 6/1

Reviews of Airlines Servicing San Diego

To help decide which airline to fly from Helena to San Diego, see what other customers have to say about Alaska Airlines, United Airlines and Delta. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
1,375 reviews

Overall

8.0

Crew

8.6

Food

7.2

Comfort

8.0

Boarding

8.3

Entertainment

7.1

Reviews

1 / 10

The line at TSA took me 2.5-3 hours to get through and I was behind on my flight time by 20 minutes. I was told some flights would be delayed and they would wait but when I arrived the flight had already taken off. I showed up on time and even then 2 and a half hours was not enough time to make my flight. I had to rent a car and drive from Vegas to San Diego at 8:00pm. I just hoped the airport would have notified their passengers a lot better.

Alaska Airlines
8.0
Very good
1,375 reviews
Alaska Airlines
8.0
Very good
1,375 reviews

Overall

8.0

Crew

8.6

Food

7.2

Comfort

8.0

Boarding

8.3

Entertainment

7.1

Reviews

1 / 10

The line at TSA took me 2.5-3 hours to get through and I was behind on my flight time by 20 minutes. I was told some flights would be delayed and they would wait but when I arrived the flight had already taken off. I showed up on time and even then 2 and a half hours was not enough time to make my flight. I had to rent a car and drive from Vegas to San Diego at 8:00pm. I just hoped the airport would have notified their passengers a lot better.

Delta
8.0
Very good
2,369 reviews
Alaska Airlines
8.0
Very good
1,375 reviews

Overall

8.0

Crew

8.6

Food

7.2

Comfort

8.0

Boarding

8.3

Entertainment

7.1

Reviews

1 / 10

The line at TSA took me 2.5-3 hours to get through and I was behind on my flight time by 20 minutes. I was told some flights would be delayed and they would wait but when I arrived the flight had already taken off. I showed up on time and even then 2 and a half hours was not enough time to make my flight. I had to rent a car and drive from Vegas to San Diego at 8:00pm. I just hoped the airport would have notified their passengers a lot better.

United Airlines
7.6
Good
1,535 reviews
Alaska Airlines
8.0
Very good
1,375 reviews

Overall

8.0

Crew

8.6

Food

7.2

Comfort

8.0

Boarding

8.3

Entertainment

7.1

Reviews

1 / 10

The line at TSA took me 2.5-3 hours to get through and I was behind on my flight time by 20 minutes. I was told some flights would be delayed and they would wait but when I arrived the flight had already taken off. I showed up on time and even then 2 and a half hours was not enough time to make my flight. I had to rent a car and drive from Vegas to San Diego at 8:00pm. I just hoped the airport would have notified their passengers a lot better.

Related info for your journey

Useful info, stats and facts about Helena to San Diego flights.

Alternative routes for Helena to San Diego

See prices for flight routes from nearby airports that may be better suited for you.

Top 2 airlines flying from Helena to San Diego

The chart below displays the airlines Cheapflights users traveling from Helena to San Diego choose most often. Cheapest and average prices are based on aggregated data from the past 12 months.
AirlineCheapestAverageFlexibilityOn-timeCOVID-19 safety
Alaska AirlinesCheapest$309Average$392FlexibilityNo cancel feeOn-time75%COVID-19 safety
Search Alaska Airlines flights
DeltaCheapest$357Average$546FlexibilityNo cancel feeOn-timeN/ACOVID-19 safety
Search Delta flights
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