SAN - HLN

$278 Find Cheap Flights from San Diego to Helena

This is the cheapest round-trip flight price found by a KAYAK user in the last 72 hours by searching for a flight from San Diego to Helena departing on 5/22. 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.
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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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Flights Deals

Cheap Flight Deals 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.

Recent round-trip flight deals from San Diego to Helena

KAYAK's recommended round-trip deals from the most popular airlines that fly from San Diego to Helena.
Discover the best prices for you by selecting your travel dates on KAYAK.
United Airlines Logo
6:45 am - 2:02 pmSAN-HLN
6h 17m1 stop
United Airlines Logo
6:25 am - 12:46 pmHLN-SAN
7h 21m1 stop
$278United Airlines
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Thu, May 22 - Sat, May 31
Alaska Airlines Logo
6:15 am - 3:31 pmSAN-HLN
8h 16m1 stop
Alaska Airlines Logo
4:11 pm - 10:44 pmHLN-SAN
7h 33m1 stop
$289Alaska Airlines
Find Deal
Sun, Jun 1 - Thu, Jun 5
Delta Logo
6:15 am - 12:27 pmSAN-HLN
5h 12m1 stop
Delta Logo
1:00 pm - 3:54 pmHLN-SAN
3h 54m1 stop
$369Delta
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Sat, Jul 5 - Sat, Jul 12
Alaska Airlines Logo
9:07 pm - 3:31 pmSAN-HLN
17h 24m2 stops
Alaska Airlines Logo
4:11 pm - 8:45 pmHLN-SAN
5h 34m1 stop
$409Alaska Airlines
Find Deal
Thu, May 22 - Sat, May 31
Alaska Airlines Logo
9:07 pm - 3:31 pmSAN-HLN
17h 24m2 stops
Alaska Airlines Logo
4:11 pm - 7:39 amHLN-SAN
16h 28m2 stops
$428Alaska Airlines
Find Deal
Thu, May 22 - Sat, May 31
Alaska Airlines Logo
1:45 pm - 3:31 pmSAN-HLN
24h 46m1 stop
Alaska Airlines Logo
4:08 pm - 7:42 amHLN-SAN
16h 34m2 stops
$431Alaska Airlines
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Sat, Jul 12 - Tue, Jul 15
Alaska Airlines Logo
7:57 pm - 3:31 pmSAN-HLN
18h 34m2 stops
Alaska Airlines Logo
4:08 pm - 7:42 amHLN-SAN
16h 34m2 stops
$458Alaska Airlines
Find Deal
Sat, Jul 12 - Tue, Jul 15
United Airlines Logo
6:45 am - 1:58 pmSAN-HLN
6h 13m1 stop
United Airlines Logo
6:45 am - 7:51 pmHLN-SAN
14h 06m2 stops
$490United Airlines
Find Deal
Sat, Jul 5 - Sat, Jul 12
Alaska Airlines Logo
5:05 pm - 3:31 pmSAN-HLN
21h 26m2 stops
Alaska Airlines Logo
4:08 pm - 8:21 amHLN-SAN
17h 13m2 stops
$584Alaska Airlines
Find Deal
Sat, Jul 5 - Sat, Jul 12
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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.

What’s the cheapest day of the week to fly from San Diego to Helena?

The average price of all round-trip flights from San Diego to Helena clicked on KAYAK for each day over the last 12 months.

If your flying dates are flexible, you should consider flying to Helena on a Saturday, as we generally find the cheapest rates on that day for this route. On the other hand, Wednesday is the most expensive day to fly from San Diego to Helena. For your return ticket, we recommend flying on a Wednesday and avoiding Mondays for the best deals.

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Good to know

Low seasonOctober
High seasonMay
Cheapest flight$278
Best time to beat the crowds with an average 33% drop in price.
Most popular time to fly and prices are also 26% 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 $278 for a round-trip ticket.

  • 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?

    Star Alliance, oneworld, and SkyTeam are the airline alliances operating flights between San Diego and Helena, with SkyTeam being the most commonly used for this route.

  • 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.

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.
8.0
DeltaOverall score based on 7934 reviews
8.2Boarding
7.9Comfort
7.3Food
7.9Entertainment
8.5Crew
Airline reviews

Delta flight was on time, seats were comfortable, and crew was nice.

8.0 ExcellentAnonymous, Apr 2025LAX - DEN
Read more Delta reviews

Delta flight was on time, seats were comfortable, and crew was nice.

Thank you for not flipping the plane on the run way. You guys get a 5 star rating for the flight!!!

Boarding is, as it always is… horrible. Gate lice. Slow moving zones. Too many people with carry ons

It was terrible, if they ran flights on time it would make a big difference.

Delta seems to be improving in many areas, except they are super bad with the food available. Bring back normal food service on long flights.

I actually received a notification from kayak on email but not one by text from Delta when my departure gait changed and I almost missed my flight

New boarding doesn't make sense. Filling front first is slow.

Delta flight was great from the check in all the way to arrival. However, I had a very bad experience. I requested a wheelchair and the wheelchair employee that went to pick me up from the plane in Boston to bring me to the baggage claims told me I have to pay him. I was under the impression that it was a free service and I usually give tips but the person forced me to pay and since I said no because I was upset with his demand when my daughter walked in to pick me up he demanded payment from my daughter who paid him thinking maybe now it is a charged service.

Horrible. Grateful to be alive but spent 13 hours at airport only to return back to my familys house and flight changed to next day. They tried to fix a part on plane, had no back up plane and after 10 hours , reattempted the flight and it STILL wasn't fixed. We got a meal voucher and rescheduled flight but there should be some other compensation for the 15 hours spent in airport

My seat was changed at the last minute and I was moved to the last row, right next to the bathroom despite selecting my seat well in advance. I was also made to check my carry on due to space but when I got on the plane there was significant empty overhead space. Picking up my carry on from the luggage carousel added time to my trip which had already been extended due to delay.

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

Information on your arrival and departure airports

Helena (HLN)
San Diego (SAN)

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