HLN - SAN
$207 Find Cheap Flights from Helena to San Diego - Compare and Save
This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Helena to San Diego departing on 12/8. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
Everything you should know
Cheapest round-trip
$313
Typical prices: $391-$498
Alaska Airlines
Tue 1/23Tue 1/30
HLN - SAN • 1 stop
Cheapest one-way
$207
Typical prices: $279-$393
Alaska Airlines
Sat 12/8
HLN - SAN • 1 stop
Cheap Flights from Helena to San Diego (HLN-SAN)
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Helena to San Diego that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Cheap flights from Helena to San Diego with top airlines, updated regularly. Compare round-trip, one-way, direct and last-minute deals.
Sat, Jan 23 - Sat, Jan 30
5:00 pm - 9:16 amHLN Helena-SAN San Diego
17h 16m1 stop Seattle/Tacoma Intl
6:16 am - 4:23 pmSAN San Diego-HLN Helena
9h 07m1 stop Seattle/Tacoma Intl
$313Alaska Airlines
Sat, Dec 5 - Wed, Dec 9
4:49 pm - 9:17 pmHLN Helena-SAN San Diego
5h 28m1 stop Seattle/Tacoma Intl
6:15 am - 4:12 pmSAN San Diego-HLN Helena
8h 57m1 stop Seattle/Tacoma Intl
$325Alaska Airlines
Sat, Dec 5 - Wed, Dec 9
4:49 pm - 9:17 pmHLN Helena-SAN San Diego
5h 28m1 stop Seattle/Tacoma Intl
6:15 am - 4:12 pmSAN San Diego-HLN Helena
8h 57m1 stop Seattle/Tacoma Intl
$353Alaska Airlines
Sat, Dec 5 - Wed, Dec 9
4:49 pm - 9:17 pmHLN Helena-SAN San Diego
5h 28m1 stop Seattle/Tacoma Intl
7:12 am - 4:12 pmSAN San Diego-HLN Helena
8h 00m2 stops San Francisco Seattle/Tacoma Intl
$364Alaska Airlines
Sat, Dec 5 - Wed, Dec 9
4:49 pm - 9:17 pmHLN Helena-SAN San Diego
5h 28m1 stop Seattle/Tacoma Intl
6:15 am - 4:12 pmSAN San Diego-HLN Helena
8h 57m1 stop Seattle/Tacoma Intl
$367Alaska Airlines
Sat, Jan 23 - Sat, Jan 30
5:00 pm - 9:16 amHLN Helena-SAN San Diego
17h 16m1 stop Seattle/Tacoma Intl
4:16 pm - 4:23 pmSAN San Diego-HLN Helena
23h 07m2 stops San Francisco Seattle/Tacoma Intl
$373Alaska Airlines
Sat, Dec 5 - Wed, Dec 9
4:49 pm - 4:40 pmHLN Helena-SAN San Diego
24h 51m2 stops Seattle/Tacoma Intl Sacramento Intl
6:15 am - 4:12 pmSAN San Diego-HLN Helena
8h 57m1 stop Seattle/Tacoma Intl
$386Alaska Airlines
Mon, Mar 29 - Tue, Mar 30
12:50 pm - 6:46 pmHLN Helena-SAN San Diego
6h 56m1 stop Salt Lake City
5:00 pm - 10:41 pmSAN San Diego-HLN Helena
4h 41m1 stop Salt Lake City
$525Delta
Mon, Mar 29 - Tue, Mar 30
12:50 pm - 6:55 pmHLN Helena-SAN San Diego
7h 05m2 stops Salt Lake City Los Angeles
6:15 am - 12:24 pmSAN San Diego-HLN Helena
5h 09m1 stop Salt Lake City
$530Delta
Thu, Apr 8 - Sun, Apr 11
5:45 am - 9:06 amHLN Helena-SAN San Diego
4h 21m1 stop Salt Lake City
6:15 am - 12:24 pmSAN San Diego-HLN Helena
5h 09m1 stop Salt Lake City
$545Delta
Tue, Dec 8
4:49 pm - 10:59 pmHLN Helena-SAN San Diego
7h 10m1 stop Seattle/Tacoma Intl
$207Alaska Airlines
Tue, Dec 8
1:10 pm - 10:52 pmHLN Helena-SAN San Diego
10h 42m2 stops Salt Lake City Seattle/Tacoma Intl
$208Delta
Tue, Dec 8
4:49 pm - 6:11 pmHLN Helena-SAN San Diego
26h 22m3 stops Seattle/Tacoma Intl Vancouver Intl San Francisco
$497Multiple Airlines
Price, demand and travel trends for Helena to San Diego flights
Use KAYAK data on prices, travel dates, airlines and seasonal trends to compare options and book flights with more confidence.
Prices
Airlines
Layovers
How much is a round-trip flight from Helena to San Diego?
This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from Helena to San Diego departing in january.
Round-trip flights from Helena to San Diego typically range from $391 to $498. The lowest price found in the past 5 days was $313, on Alaska Airlines.
What’s the most popular layover airport when flying from Helena to San Diego?
KAYAK data for 1-stop round-trips over the past 3 months. Only counts itineraries with the same layover on both legs.Salt Lake City (SLC) is the most popular layover for the Helena to San Diego route. 75% of KAYAK users who booked 1-stop round-trips over the past 3 months connected via SLC.
What is the cheapest layover airport when flying from Helena to San Diego?
Flights via Salt Lake City (SLC) offer the most affordable fares, with an average round-trip price of $428. Based on KAYAK data over the past 3 months.
Key details for Helena to San Diego flights
Low season | June |
|---|---|
High season | March |
Cheapest flight | $207 |
When to book flights from Helena to San Diego
Are your dates flexible? Find out the best times to travel from Helena to San Diego based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.
Your Helena to San Diego flight questions, answered
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Your guide to booking Helena to San Diego flights
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Cabin class types available on flights from Helena to San Diego
Cabin classes available on flights from Helena to San Diego. Prices are the lowest found on KAYAK over the last 7 days. Price and availability is not guaranteed.
Find direct flights to and from Helena and San Diego
Flights from domestic origins to San Diego
More flights to San Diego. Prices are the lowest found on KAYAK in the last 7 days. Price and availability is not guaranteed.
Flights to other popular destinations
The most popular flights on KAYAK according to clicks in the last 2 weeks. Prices are the lowest found on KAYAK over the last 7 days. Price and availability is not guaranteed.