SAN - HLN

$225 Find Cheap Flights from San Diego to Helena

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from San Diego to Helena departing on 7/11. 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.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Helena

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from San Diego to Helena, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from San Diego to Helena, as well as popular online travel agencies
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41,299,237 searches in the past 7 days on KAYAK

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Everything you should know

Cheapest round-trip
$357
Typical prices: $510-$406
Alaska Airlines
Fri 5/29Wed 6/3
SAN - HLN • 1 stop
Cheapest one-way
$225
Delta
Sat 7/11
SAN - HLN • 1 stop
Top airlines
Cheapest • from $357 (round-trip)
Best reviews • 7.9 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Nonstop flights
Not available
There are currently no direct flights between San Diego and Helena. You'll need at least 1 connection.
Insights
Insights
Insights
Insights
Top layover airports
Cheapest • Avg $389 (round-trip)
Shortest trip • 4h 56m (one-way)
Insights
Insights
Insights
Insights
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KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Helena!
Flight Deals
Booking Insights
Flight Deals

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

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from San Diego to Helena 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.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from San Diego to Helena

Fri, May 29 - Wed, Jun 3
Alaska Airlines Logo
5:17 pm - 4:06 pm
SAN
-
HLN
21h 49m
1 stop
Alaska Airlines Logo
4:43 pm - 11:59 pm
HLN
-
SAN
8h 16m
1 stop
$357Alaska Airlines
Fri, May 29 - Wed, Jun 3
Alaska Airlines Logo
8:04 pm - 4:06 pm
SAN
-
HLN
19h 02m
1 stop
Alaska Airlines Logo
4:43 pm - 8:21 am
HLN
-
SAN
16h 38m
2 stops
$392Alaska Airlines
Fri, May 29 - Sun, May 31
Alaska Airlines Logo
8:04 pm - 4:06 pm
SAN
-
HLN
19h 02m
1 stop
Alaska Airlines Logo
4:43 pm - 9:15 am
HLN
-
SAN
17h 32m
1 stop
$393Alaska Airlines
Fri, May 29 - Sun, May 31
Alaska Airlines Logo
6:15 am - 4:06 pm
SAN
-
HLN
8h 51m
1 stop
Alaska Airlines Logo
4:43 pm - 7:15 am
HLN
-
SAN
15h 32m
2 stops
$444Alaska Airlines
Thu, Apr 30 - Tue, May 5
Alaska Airlines Logo
7:55 am - 5:45 pm
SAN
-
HLN
8h 50m
2 stops
Alaska Airlines Logo
6:22 pm - 12:04 pm
HLN
-
SAN
18h 42m
1 stop
$466Alaska Airlines
Fri, Jul 3 - Wed, Jul 8
Alaska Airlines Logo
8:01 pm - 4:32 pm
SAN
-
HLN
19h 31m
2 stops
Alaska Airlines Logo
5:09 pm - 10:07 pm
HLN
-
SAN
5h 58m
1 stop
$467Alaska Airlines
Fri, May 29 - Sun, May 31
Alaska Airlines Logo
4:50 pm - 4:06 pm
SAN
-
HLN
22h 16m
2 stops
Alaska Airlines Logo
4:43 pm - 1:18 pm
HLN
-
SAN
21h 35m
2 stops
$473Alaska Airlines
Thu, Apr 30 - Tue, May 5
Alaska Airlines Logo
7:55 am - 5:45 pm
SAN
-
HLN
8h 50m
2 stops
Alaska Airlines Logo
6:22 pm - 8:39 am
HLN
-
SAN
15h 17m
2 stops
$480Alaska Airlines
Fri, Jul 3 - Wed, Jul 8
Alaska Airlines Logo
9:47 pm - 4:32 pm
SAN
-
HLN
17h 45m
2 stops
Alaska Airlines Logo
5:09 pm - 11:56 pm
HLN
-
SAN
7h 47m
1 stop
$487Alaska Airlines
Fri, Jul 3 - Wed, Jul 8
Alaska Airlines Logo
6:49 pm - 4:32 pm
SAN
-
HLN
20h 43m
2 stops
Alaska Airlines Logo
5:09 pm - 11:56 pm
HLN
-
SAN
7h 47m
1 stop
$492Alaska Airlines
Booking Insights

KAYAK's insights & trends for San Diego to Helena flights

Get data-powered insights and trends into flights from San Diego to Helena to help you find the cheapest flights, the best time to fly and much more.

Which airlines provide the cheapest flights from San Diego to Helena?

The cheapest round-trip price for the route for each airline clicked by KAYAK users in the last 72 hours.

In the past 3 days, the cheapest round-trip tickets from San Diego to Helena were found on Alaska Airlines ($357) and Delta ($554).

Good to know

Low seasonJuly
Cheapest flight$225
Best time to beat the crowds with an average 48% drop in price.
Most popular time to fly and prices are also 48% lower on average.
Flight from San Diego to Helena

When to book flights from San Diego to Helena

Are your dates flexible? Find out the best times to travel from San Diego to Helena 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.

FAQs for booking flights from San Diego to Helena

  • What is the cheapest flight from San Diego to Helena?

    In the last 3 days, the lowest price for a flight from San Diego to Helena was $225 for a one-way ticket and $357 for a round-trip.

  • Do I need a passport to fly between San Diego and Helena?

    A passport is not required to fly from San Diego to Helena.

  • Which airports will I be using when flying from San Diego to Helena?

    When flying out of San Diego you will be using San Diego. You will be landing at Helena, also known as Helena.

  • Which aircraft models fly most regularly from San Diego to Helena?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from San Diego to Helena?

    SkyTeam is the only airline alliance operating flights between San Diego and Helena.

  • How does KAYAK find such low prices on flights from San Diego to Helena?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from San Diego to Helena.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from San Diego to Helena?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Helena from San Diego is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from San Diego to Helena?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Helena with an airline and back to San Diego with another airline. Booking your flights between San Diego and HLN can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from San Diego to Helena?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Helena from San Diego up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top airline flying from San Diego to Helena

 
See real verified KAYAK customer reviews for airlines flying from San Diego to Helena. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from San Diego to Helena? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.9
DeltaOverall score based on 8404 reviews
8.1Boarding
8.5Crew
7.8Entertainment
7.9Comfort
7.2Food
Airline reviews

Generally on time departures and arrivals, clean planes, sky miles membership provides great benefits (complimentary upgrades, etc).

10.0 ExcellentSarah, Apr 2026
LAX - SFO
Read more Delta reviews

Generally on time departures and arrivals, clean planes, sky miles membership provides great benefits (complimentary upgrades, etc).

N Everything was perfect from boarding to assistance to baggage in Tampa

Loved the crew! Sucks that we went from 1 hour and 8 minute layover to a 3 hour layover. But weather sucks like that.

Fast, lovely scenery, great info on the Delta flight screen about landmarks we were flying over. Great landing!

Long flight but comfortable and not freezing as I have experienced on Hawaiian flights to the islands. They gave us blankets just in case. Nice touch.

I took seat 15A in anticipation of window seat, there is no window.

Flight late, the waited for a long time for “personal” to arrive at gate to dock the plane in Rochester. So annoying. This flight was expected, why aren’t personel available for the jet bridge?

My recent experience was excellent on Delta! I flew with Delta Comfort and I was really comfortable in my seat. I enjoyed the in-flight service. The flight attendants were so friendly and hospitable. I love the snack on the flight as well. This was my first time flying on Delta and I will definitely consider flying with them again.

My flight was canceled on Sunday. Rebooking took three hours. Had to pay for accommodations another night. New flight was delayed for 5 hours, all that was sent was a 12 dollar food voucher, which doesn’t tell you how to use it. Then when we landed we had to sit on the plane for an hour before we could get off.

I was in first class and literally the men behind me were so aggressively loud I moved myself to economy. This has become so common on Delta - people using audio without headphones, and men on 12am / late night flights drinking and yelling to talk to each other which prevents anyone around them from resting. Pretty crazy to have to move from first to economy (poorer service, less comfort...). Wild wild. Looking into other airlines.

Everything you need to know for your flight from San Diego to Helena

Information on your arrival and departure airports