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

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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 2021: compare Helena to San Diego flight prices with the expected peak season, weather and rainfall in San Diego.
HLN - SAN
Price
$191 - $506
SAN
Temperature
57.2 - 71.6 °F
SAN
Precipitation
0 - 2.3 inches

Popular in

July

High demand for flights, 35% potential price rise

Cheapest in

June

Best time to find cheap flights, 42% potential price drop

Round-trip from

$191

From Helena to San Diego

One-way from

$188

One-way flight from Helena to San Diego

Flight route prices based on searches on Cheapflights within the last 3 days, monthly prices based on aggregated historical data.
What is the cheapest day to fly round-trip from Helena to San Diego?

Saturday flights are found to be more expensive to fly from Helena to San Diego. This shouldn’t discourage you from searching, as you can still find great deals by being flexible with your options. Use our search form to find deals on tickets to San Diego.

What is the cheapest month to fly from Helena to San Diego?

June is one of the best times of the year to fly to San Diego from Helena. Prices for June average $329 per person but you can even find prices for as low as $103. The most expensive prices can be found in the month of July. Opting for a June flight can save you 53% on your journey compared to booking in June

When is the cheapest time to fly from Helena to San Diego (HLN - SAN)?

When flying from Helena to San Diego, the time of day you fly usually plays a role in the price. Save by searching for a flight in the afternoon, which can drop the price by up to 9% versus a flight at noon.

Cheap flights from Helena to San Diego in October, November 2021

The best prices found for HLN to SAN flights for October, November
11 Nov - 15 Nov
$319pp
HLN
Helena
Multiple Airlines
 
1 STOP
SAN
San Diego
SAN
San Diego
Multiple Airlines
     
3 STOPS
HLN
Helena
11 Nov - 15 Nov
$351pp
HLN
Helena
Alaska Airlines
 
1 STOP
SAN
San Diego
SAN
San Diego
Alaska Airlines
   
2 STOPS
HLN
Helena
11 Nov - 15 Nov
$472pp
HLN
Helena
Multiple Airlines
   
2 STOPS
SAN
San Diego
SAN
San Diego
Alaska Airlines
     
3 STOPS
HLN
Helena

Helena to San Diego 2021 flight deals

Cheap flights to San Diego from Helena found for this year
3 Dec - 7 Dec
$267pp
HLN
Helena
United Airlines
 
1 STOP
SAN
San Diego
SAN
San Diego
United Airlines
 
1 STOP
HLN
Helena
3 Dec - 7 Dec
$294pp
HLN
Helena
United Airlines
   
2 STOPS
SAN
San Diego
SAN
San Diego
United Airlines
 
1 STOP
HLN
Helena
3 Dec - 8 Dec
$314pp
HLN
Helena
Multiple Airlines
   
2 STOPS
SAN
San Diego
SAN
San Diego
United Airlines
 
1 STOP
HLN
Helena

Last minute flights from Helena to San Diego

Late deals on round-trip flights to San Diego from Helena, departing today and this week
29 Oct - 1 Nov
$613pp
HLN
Helena
United Airlines
 
1 STOP
SAN
San Diego
SAN
San Diego
United Airlines
 
1 STOP
HLN
Helena
29 Oct - 1 Nov
$617pp
HLN
Helena
United Airlines
   
2 STOPS
SAN
San Diego
SAN
San Diego
United Airlines
 
1 STOP
HLN
Helena
29 Oct - 1 Nov
$654pp
HLN
Helena
Multiple Airlines
     
3 STOPS
SAN
San Diego
SAN
San Diego
Alaska Airlines
   
2 STOPS
HLN
Helena

One-way flights to San Diego from Helena

The cheapest one-way flights from Helena to San Diego
1:45 am - 4:24 am
United Airlines
1 Stop
27h 39m
HLN - SAN
United Airlines
$188
United
11:03 am - 3:50 pm
Alaska Airlines
1 Stop
5h 47m
HLN - SAN
Alaska Airlines
9:06 am - 4:30 am
United Airlines
1 Stop
20h 24m
HLN - SAN
United Airlines
$349
United

Related info for your journey

Useful info, stats and facts about <span class="emphasized">Helena</span> to <span class="emphasized">San Diego</span> flights.

Flight FAQs

From Helena to San Diego

Which airlines flying from Helena to San Diego have flexible cancellations due to COVID-19?

Due to the rapidly changing circumstances due to COVID-19, airlines like Delta, United Airlines, and Alaska Airlines flying from Helena to San Diego have implemented new flexible cancellation policies.

Can I find flights from Helena to San Diego for under $300 on Cheapflights?

Yes, there are multiple flights from Helena to San Diego for under $300. The cheapest flight booked recently is on United Airlines for just $267, but on average you can expect to pay $384.

Are there last-minute flights available from Helena to San Diego for under $700?

There are currently 4+ open flights from Helena to San Diego within the next 7 days for less than $700.

What are the cheapest airlines flying from Helena to San Diego round-trip?

Our cheapest airline available from Helena to San Diego is United Airlines. Our recent data shows that you can find tickets from as low as $267 on this airline. An additional option worth looking into is Alaska Airlines, starting at $351. United Airlines is currently priced 18% below the average price you’ll pay for this route.

What are the most popular airlines that fly from Helena to San Diego?

Alaska Airlines, Delta and United Airlines are the most popular airlines when flying from Helena to San Diego.

What are the cheapest flights from Helena to San Diego?

The cheapest flight price from Helena to San Diego is $129. On average you can expect to pay $348. The most popular route, (Helena - San Diego), can usually be booked for $319.

COVID Restrictions

View COVID Travel Restrictions for San Diego, CA

Do I need a COVID test to fly to San Diego from Helena?

Information is based on travel restrictions for travel to San Diego within the United States

Most visitors from Helena need to provide a negative COVID-19 test result and/or quarantine to enter San Diego.

COVID-19 testing requirements
Visitors from Helena must present a negative RT-PCR (NAAT) or Antigen (quick-test) test taken 72 hours before departing to San Diego.

Quarantine requirements
Visitors from Helena are not required to quarantine after entering San Diego.

Do I need a test to fly back to Helena from San Diego?

Returning to Helena from San Diego

COVID-19 testing requirements
Visitors from San Diego must present a negative RT-PCR (NAAT) or Antigen (quick-test) test taken 72 hours before departing to Helena.

Quarantine requirements
Visitors from San Diego are not required to quarantine after entering Helena.

Hide COVID Travel Restrictions for San Diego, CA

Alternative routes for Helena to San Diego

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

Destination information for San Diego

Things to know before you go - useful duration and weather info for your trip from Helena to San Diego.
Average temperature for October in San Diego
77.0 °F
Avg rainfall for October in San Diego
0.6 ″

Airports servicing Helena

Airports servicing San Diego

Top 3 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.
Airline Cheapest Average Flexibility On-time COVID-19 safety
United Airlines
$119 $228 No cancel fee 69%
Delta
$129 $357 No cancel fee N/A
Alaska Airlines
$139 $306 No cancel fee 75%
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