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Cheap flights from San Diego to Helena from $260

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from San Diego to Helena departing on 11/28. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

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Find the cheapest flights from San Diego to Helena

Cheap round-trip flights

Enter your travel dates to find the best prices.
Alaska Airlines Logo
9:21 am - 5:22 pmSAN-HLN
31h 01m2 stops
Alaska Airlines Logo
5:59 pm - 7:17 amHLN-SAN
38h 18m2 stops
$286Alaska Airlines
Find Deal
Sat, Feb 7 - Mon, Feb 9
Alaska Airlines Logo
6:15 am - 5:22 pmSAN-HLN
10h 07m1 stop
Alaska Airlines Logo
5:59 pm - 5:20 pmHLN-SAN
24h 21m1 stop
$292Alaska Airlines
Find Deal
Sat, Feb 7 - Mon, Feb 9
Alaska Airlines Logo
8:59 pm - 5:22 pmSAN-HLN
19h 23m2 stops
Alaska Airlines Logo
5:59 pm - 11:09 pmHLN-SAN
6h 10m1 stop
$323Alaska Airlines
Find Deal
Sat, Feb 7 - Mon, Feb 9
Delta Logo
6:15 am - 12:26 pmSAN-HLN
5h 11m1 stop
Delta Logo
5:30 am - 12:01 pmHLN-SAN
7h 31m1 stop
$334Delta
Find Deal
Wed, Nov 19 - Sun, Nov 23
Alaska Airlines Logo
6:15 am - 5:36 pmSAN-HLN
10h 21m1 stop
Alaska Airlines Logo
7:32 pm - 7:16 pmHLN-SAN
24h 44m1 stop
$373Alaska Airlines
Find Deal
Wed, Nov 19 - Sun, Nov 23
Alaska Airlines Logo
3:45 pm - 5:36 pmSAN-HLN
24h 51m2 stops
Alaska Airlines Logo
7:32 pm - 12:10 amHLN-SAN
5h 38m1 stop
$379Alaska Airlines
Find Deal
Wed, Nov 19 - Sun, Nov 23
United Airlines Logo
6:45 am - 1:27 pmSAN-HLN
5h 42m1 stop
United Airlines Logo
2:22 pm - 9:00 pmHLN-SAN
7h 38m1 stop
$404United Airlines
Find Deal
Wed, Nov 19 - Sun, Nov 23
Delta Logo
6:15 am - 12:26 pmSAN-HLN
5h 11m1 stop
Delta Logo
1:06 pm - 10:47 pmHLN-SAN
10h 41m1 stop
$442Delta
Find Deal
Mon, Nov 24 - Fri, Nov 28
United Airlines Logo
6:45 am - 1:27 pmSAN-HLN
5h 42m1 stop
United Airlines Logo
6:40 am - 5:29 pmHLN-SAN
11h 49m1 stop
$536United Airlines
Find Deal
Tue, Nov 25 - Fri, Nov 28
Multiple Airlines Logo
9:36 am - 6:52 pmSAN-HLN
8h 16m1 stop
Multiple Airlines Logo
7:32 pm - 11:45 amHLN-SAN
41h 13m2 stops
$1,092Multiple Airlines
Find Deal
Sun, Nov 23 - Sat, Nov 29

Alaska Airlines flights from San Diego to Helena

Our best Alaska Airlines deals on San Diego to Helena flight tickets
Alaska Airlines
Feb 7
SAN9:21 amSan Diego
31h 01m
2 stops
HLN5:22 pmHelena
Feb 9
HLN5:59 pmHelena
38h 18m
2 stops
SAN7:17 amSan Diego
$286
Find similar
Alaska Airlines
Feb 7
SAN6:15 amSan Diego
10h 07m
1 stop
HLN5:22 pmHelena
Feb 9
HLN5:59 pmHelena
24h 21m
1 stop
SAN5:20 pmSan Diego
$292
Find similar
Alaska Airlines
Feb 7
SAN8:59 pmSan Diego
19h 23m
2 stops
HLN5:22 pmHelena
Feb 9
HLN5:59 pmHelena
6h 10m
1 stop
SAN11:09 pmSan Diego
$323
Find similar

United Airlines flights from San Diego to Helena

Our best United Airlines deals on San Diego to Helena flight tickets
United Airlines
Nov 19
SAN6:45 amSan Diego
5h 42m
1 stop
HLN1:27 pmHelena
Nov 23
HLN2:22 pmHelena
7h 38m
1 stop
SAN9:00 pmSan Diego
$404
Find similar
United Airlines
Nov 25
SAN6:45 amSan Diego
5h 42m
1 stop
HLN1:27 pmHelena
Nov 28
HLN6:40 amHelena
11h 49m
1 stop
SAN5:29 pmSan Diego
$536
Find similar
United Airlines
Nov 24
SAN5:55 pmSan Diego
18h 32m
2 stops
HLN1:27 pmHelena
Nov 28
HLN6:40 amHelena
11h 49m
1 stop
SAN5:29 pmSan Diego
$559
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from San Diego to Helena that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated October 22, 2025.
Use the filters below to find and compare flights from San Diego to Helena that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

San DiegoHelena

SAN - HLN

SANHLN

San Diego

Sat 2/7

9:21 am-5:22 pm

2 stops31h 01m

Helena

Mon 2/9

5:59 pm-7:17 am

2 stops38h 18m

$286

San DiegoHelena

SAN - HLN

SANHLN

San Diego

Sat 2/7

6:15 am-5:22 pm

1 stop10h 07m

Helena

Mon 2/9

5:59 pm-5:20 pm

1 stop24h 21m

$292

San DiegoHelena

SAN - HLN

SANHLN

San Diego

Sat 2/7

8:59 pm-5:22 pm

2 stops19h 23m

Helena

Mon 2/9

5:59 pm-11:09 pm

1 stop6h 10m

$323

San DiegoHelena

SAN - HLN

SANHLN

San Diego

Wed 11/19

6:15 am-12:26 pm

1 stop5h 11m

Helena

Sun 11/23

5:30 am-12:01 pm

1 stop7h 31m

$334

San DiegoHelena

SAN - HLN

SANHLN

San Diego

Wed 11/19

6:15 am-5:36 pm

1 stop10h 21m

Helena

Sun 11/23

7:32 pm-7:16 pm

1 stop24h 44m

$373

San DiegoHelena

SAN - HLN

SANHLN

San Diego

Wed 11/19

3:45 pm-5:36 pm

2 stops24h 51m

Helena

Sun 11/23

7:32 pm-12:10 am

1 stop5h 38m

$379

San DiegoHelena

SAN - HLN

SANHLN

San Diego

Wed 11/19

6:45 am-1:27 pm

1 stop5h 42m

Helena

Sun 11/23

2:22 pm-9:00 pm

1 stop7h 38m

$404

San DiegoHelena

SAN - HLN

SANHLN

San Diego

Mon 11/24

6:15 am-12:26 pm

1 stop5h 11m

Helena

Fri 11/28

1:06 pm-10:47 pm

1 stop10h 41m

$442

San DiegoHelena

SAN - HLN

SANHLN

San Diego

Tue 11/25

6:45 am-1:27 pm

1 stop5h 42m

Helena

Fri 11/28

6:40 am-5:29 pm

1 stop11h 49m

$536

San DiegoHelena

SAN - HLN

SANHLN

San Diego

Sun 11/23

9:36 am-6:52 pm

1 stop8h 16m

Helena

Sat 11/29

7:32 pm-11:45 am

2 stops41h 13m

$1,092

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 13 resultsSorted by cheapest first
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See travel insights to Helena from

How to get the cheapest flight ticket from San Diego to Helena

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the typical price of a round-trip flight between San Diego and Helena?

What is the cheapest day to depart on your flight to Helena?

The cheapest day to depart from San Diego to Helena is on a Saturday. Travelers who choose to depart for Helena on a Saturday will often find tickets for as low as $378. The most expensive day to fly to Helena is Wednesday, with ticket prices averaging around $578.

What is the cheapest time of day to depart on your flight to Helena?

According to our data, the cheapest time of day to fly to Helena is in the morning. momondo users have found flights departing from San Diego to Helena in the morning for as low as $442. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. In contrast, the most expensive time of day to depart to Helena is in the afternoon when prices are around $464.

When to book flights from San Diego to Helena

Are you open to changing your travel dates? Check out the ideal times to fly from San Diego to Helena according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap San Diego to Helena (SAN to HLN) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from San Diego to Helena

Direct flights

None
There are no direct flights from San Diego to Helena. There are no popular flight routes from San Diego to Helena.
Search flight deals

  • How far is San Diego to Helena by plane?

    San Diego and Helena are 995.5 mi apart from one another. In terms of flight time, this usually takes a little over 5h 05m.

  • When did momondo last update prices for flights from San Diego Airport to Helena Airport?

    Prices for flights from San Diego Airport to Helena Airport are updated daily.

  • How many operators does momondo search for flights from San Diego Airport to Helena Airport?

  • How old do you have to be to fly from San Diego Airport to Helena Airport?

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from San Diego Airport to Helena Airport.

  • What documentation or ID do you need to fly to Helena Airport?

    The required travel and health documents for your Helena Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Helena Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

  • What is the most popular airline from San Diego to Helena?

Best airlines flying from San Diego to Helena

Compare and see reviews for airlines that fly from San Diego to Helena with momondo
Airline
Rating
Free Cancellation
Price
DeltaPriceFrom $219Free CancellationRating
7.9
7,979 reviews
Search Delta flights
Alaska AirlinesPriceFrom $312Free CancellationRating
8.0
11,150 reviews
Search Alaska Airlines flights

Why use momondo?

Why should I use momondo to find a flight deal from San Diego to Helena?

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from San Diego to Helena. Millions of users trust and use momondo every year so you are in good hands.

Can I find flights from San Diego to Helena with flexible booking policies on momondo?

Yes. momondo enables you to select and highlight flights to Helena from San Diego with this policy.

How can momondo help me find flights from San Diego to Helena?

Once you have performed a search for San Diego to Helena flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

I’m not ready to book a flight from San Diego to Helena right now. Can momondo alert me if prices change?

If you are not ready to book a flight from San Diego to Helena now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Helena and let you know when they change.

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Fri 11/21
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