What airlines fly to San Antonio?

United Airlines, Delta and Southwest are the top three most popular airlines that fly to San Antonio from Helena according to our data. United Airlines is the first choice among our users, with 40% of people opting to fly with this airline when traveling to San Antonio. Keep in mind that there are 5 different airlines that fly to San Antonio on a routine basis, so you have a few additional options to choose from.

What is the cheapest airline that flies from Helena to San Antonio?

Alaska Airlines, Delta, and United Airlines are the most popular carriers operating from Helena to San Antonio

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

Prices for flights from Helena Airport to San Antonio Airport were last updated today.

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

The number of operators available for flights from Helena Airport to San Antonio Airport is 2 as of September 2025.

How old do you have to be to fly from Helena Airport to San Antonio 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 Helena Airport to San Antonio Airport.

What documentation or ID do you need to fly to San Antonio Airport?

The necessary travel and health documents for your San Antonio Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

$233 Cheap Flights from Helena to San Antonio in 2025

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Find the cheapest flights from Helena to San Antonio

Round-trip

One-way

Cheap round-trip flights

6:18 pm - 12:04 amHLN-SAT

28h 46m1 stop

7:56 pm - 5:41 pmSAT-HLN

22h 45m1 stop

$413Alaska Airlines

Find Deal

Wed, Oct 8 - Wed, Oct 15

2:44 pm - 8:55 pmHLN-SAT

5h 11m1 stop

4:39 pm - 9:00 pmSAT-HLN

5h 21m1 stop

$466United Airlines

Find Deal

Mon, Sep 29 - Fri, Oct 3

5:18 pm - 8:55 pmHLN-SAT

26h 37m1 stop

9:00 am - 2:09 pmSAT-HLN

6h 09m1 stop

$467United Airlines

Find Deal

Fri, Oct 17 - Tue, Oct 21

2:44 pm - 8:55 pmHLN-SAT

5h 11m1 stop

2:25 pm - 9:00 pmSAT-HLN

7h 35m2 stops

$471United Airlines

Find Deal

Mon, Sep 29 - Fri, Oct 3

5:18 pm - 12:45 pmHLN-SAT

18h 27m1 stop

5:30 am - 4:40 pmSAT-HLN

12h 10m2 stops

$472United Airlines

Find Deal

Fri, Oct 17 - Tue, Oct 21

6:30 am - 12:45 pmHLN-SAT

5h 15m1 stop

5:30 am - 4:40 pmSAT-HLN

12h 10m2 stops

$485United Airlines

Find Deal

Wed, Oct 8 - Wed, Oct 15

5:18 pm - 8:55 pmHLN-SAT

26h 37m1 stop

7:38 pm - 2:09 pmSAT-HLN

19h 31m2 stops

$492United Airlines

Find Deal

Fri, Oct 17 - Tue, Oct 21

1:00 pm - 11:52 pmHLN-SAT

9h 52m2 stops

10:37 am - 10:14 pmSAT-HLN

12h 37m2 stops

$617Delta

Find Deal

Mon, Sep 29 - Fri, Oct 3

5:45 am - 1:32 pmHLN-SAT

6h 47m1 stop

6:05 pm - 10:14 pmSAT-HLN

5h 09m1 stop

$643Delta

Find Deal

Sun, Sep 28 - Fri, Oct 3

5:45 am - 1:32 pmHLN-SAT

6h 47m1 stop

10:37 am - 10:14 pmSAT-HLN

12h 37m2 stops

$648Delta

Find Deal

Sun, Sep 28 - Fri, Oct 3

United Airlines flights from Helena to San Antonio

Our best United Airlines deals on Helena to San Antonio flight tickets

United Airlines

Sep 29

HLN2:44 pmHelena

5h 11m

1 stop

SAT8:55 pmSan Antonio

Oct 3

SAT4:39 pmSan Antonio

5h 21m

1 stop

HLN9:00 pmHelena

$466

Find similar

United Airlines

Oct 17

HLN5:18 pmHelena

26h 37m

1 stop

SAT8:55 pmSan Antonio

Oct 21

SAT9:00 amSan Antonio

6h 09m

1 stop

HLN2:09 pmHelena

$467

Find similar

United Airlines

Sep 29

HLN2:44 pmHelena

5h 11m

1 stop

SAT8:55 pmSan Antonio

Oct 3

SAT2:25 pmSan Antonio

7h 35m

2 stops

HLN9:00 pmHelena

$471

Find similar

Delta flights from Helena to San Antonio

Our best Delta deals on Helena to San Antonio flight tickets

Delta

Sep 29

HLN1:00 pmHelena

9h 52m

2 stops

SAT11:52 pmSan Antonio

Oct 3

SAT10:37 amSan Antonio

12h 37m

2 stops

HLN10:14 pmHelena

$617

Find similar

Delta

Sep 28

HLN5:45 amHelena

6h 47m

1 stop

SAT1:32 pmSan Antonio

Oct 3

SAT6:05 pmSan Antonio

5h 09m

1 stop

HLN10:14 pmHelena

$643

Find similar

Delta

Sep 28

HLN5:45 amHelena

6h 47m

1 stop

SAT1:32 pmSan Antonio

Oct 3

SAT10:37 amSan Antonio

12h 37m

2 stops

HLN10:14 pmHelena

$648

Find similar

Fly from

Fly to

Route

Depart

Return

Price

HelenaSan Antonio

HLN - SAT

HLNSAT

Helena

Wed 10/8

6:18 pm-12:04 am

1 stop28h 46m

San Antonio

Wed 10/15

7:56 pm-5:41 pm

1 stop22h 45m

$413

HelenaSan Antonio

HLN - SAT

HLNSAT

Helena

Mon 9/29

2:44 pm-8:55 pm

1 stop5h 11m

San Antonio

Fri 10/3

4:39 pm-9:00 pm

1 stop5h 21m

$466

HelenaSan Antonio

HLN - SAT

HLNSAT

Helena

Fri 10/17

5:18 pm-8:55 pm

1 stop26h 37m

San Antonio

Tue 10/21

9:00 am-2:09 pm

1 stop6h 09m

$467

HelenaSan Antonio

HLN - SAT

HLNSAT

Helena

Mon 9/29

2:44 pm-8:55 pm

1 stop5h 11m

San Antonio

Fri 10/3

2:25 pm-9:00 pm

2 stops7h 35m

$471

HelenaSan Antonio

HLN - SAT

HLNSAT

Helena

Fri 10/17

5:18 pm-12:45 pm

1 stop18h 27m

San Antonio

Tue 10/21

5:30 am-4:40 pm

2 stops12h 10m

$472

HelenaSan Antonio

HLN - SAT

HLNSAT

Helena

Wed 10/8

6:30 am-12:45 pm

1 stop5h 15m

San Antonio

Wed 10/15

5:30 am-4:40 pm

2 stops12h 10m

$485

HelenaSan Antonio

HLN - SAT

HLNSAT

Helena

Fri 10/17

5:18 pm-8:55 pm

1 stop26h 37m

San Antonio

Tue 10/21

7:38 pm-2:09 pm

2 stops19h 31m

$492

HelenaSan Antonio

HLN - SAT

HLNSAT

Helena

Mon 9/29

1:00 pm-11:52 pm

2 stops9h 52m

San Antonio

Fri 10/3

10:37 am-10:14 pm

2 stops12h 37m

$617

HelenaSan Antonio

HLN - SAT

HLNSAT

Helena

Sun 9/28

5:45 am-1:32 pm

1 stop6h 47m

San Antonio

Fri 10/3

6:05 pm-10:14 pm

1 stop5h 09m

$643

HelenaSan Antonio

HLN - SAT

HLNSAT

Helena

Sun 9/28

5:45 am-1:32 pm

1 stop6h 47m

San Antonio

Fri 10/3

10:37 am-10:14 pm

2 stops12h 37m

$648

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 15 resultsSorted by cheapest first

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

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

Prices

Airlines

What is the cheapest day to depart on your flight to San Antonio?

The cheapest day to depart on your flight to San Antonio is on a Thursday when prices can be found for as low as $456. This is often the case because there is less demand to fly during this day of the week. Be sure to avoid booking your departure on a Sunday as prices are generally higher than usual. According to our data, the average ticket price to San Antonio on Sunday is $810.

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

According to our data, the cheapest time of day to fly to San Antonio is at noon. momondo users have found flights departing from Helena to San Antonio at noon for as low as $568. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. Flights to San Antonio are more costly in the morning, with an average ticket price of $574. Departure times in the morning fall within the peak daily travel times, which is why tickets can be more expensive.

When to book flights from Helena to San Antonio

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

Estimated round-trip price

Cheap Helena to San Antonio (HLN to SAT) flight deals and tips

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

Direct flights	None

There are no direct flights from Helena to San Antonio. There are no popular flight routes from Helena to San Antonio.

Search flight deals

How far is Helena to San Antonio by plane?
The distance between Helena and San Antonio is about 1391.2 mi. Flights usually cover this in 5h 11m, depending on flying conditions and air traffic around both airports.
When did momondo last update prices for flights from Helena Airport to San Antonio Airport?
Prices for flights from Helena Airport to San Antonio Airport were last updated today.
How many operators does momondo search for flights from Helena Airport to San Antonio Airport?
The number of operators available for flights from Helena Airport to San Antonio Airport is 2 as of September 2025.
How old do you have to be to fly from Helena Airport to San Antonio 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 Helena Airport to San Antonio Airport.
What documentation or ID do you need to fly to San Antonio Airport?
The necessary travel and health documents for your San Antonio Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.
What is the most popular airline from Helena to San Antonio?
Based on momondo bookings for this flight route, the most popular airline on flight routes from Helena to San Antonio is United Airlines (57% of total bookings). The next most popular airline is Delta (43%).

Best airlines flying from Helena to San Antonio

Compare and see reviews for airlines that fly from Helena to San Antonio with momondo

Airline	Rating	Free Cancellation	Price
Delta	PriceFrom $282	Free Cancellation	Rating 7.9 7,960 reviews		Search Delta flights
United Airlines	PriceFrom $340	Free Cancellation	Rating 7.4 8,937 reviews		Search United Airlines flights

New Braunfels

Kerrville

Boerne

Schertz

Pleasanton

Why use momondo?

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

It is quick and easy to find Helena to San Antonio flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to San Antonio that suits you.

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

Yes. momondo allows you to filter the results for Helena to San Antonio flights to just show those with flexible booking policies.

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

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to San Antonio from Helena.

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

Yes. momondo can track prices for Helena to San Antonio flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.