How long does it take to fly to San Antonio?

Flight times vary depending on what airport in Idaho you fly out of and what airport in San Antonio you fly into. For example, flying from Idaho Falls to Austin takes 5h 19m on average. On the other hand, flying from Boise to Austin takes 5h 25m on average. Keep in mind that it’s always quicker to opt for a non-stop flight, so be sure to check momondo if there are any available for your route.

What airlines fly to San Antonio?

Delta, United Airlines and Southwest are the top three most popular airlines that fly to San Antonio from Idaho according to our data. Delta is the first choice among our users, with 35% of people opting to fly with this airline when traveling to San Antonio. Keep in mind that there are 6 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 Idaho to San Antonio?

Delta, American Airlines, and Hawaiian Airlines are the most popular carriers operating from Idaho to San Antonio

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

Prices for flights from Idaho to San Antonio Airport are refreshed on a daily basis.

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

As of August 2025, there are 6 operators available to choose from for flights from Idaho to San Antonio Airport.

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

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

The travel and health documents required for your trip to San Antonio Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at San Antonio Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

$134 Cheap Flights from Idaho to San Antonio in 2025

1 adult

0 bags

Discover deals from 900+ travel sites with momondo.

Save money when you book flights with momondo

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Not ready to book? to track prices.

Search flight deals

Find the cheapest flights from Idaho to San Antonio

Round-trip

One-way

Last minute

Cheap round-trip flights

8:58 pm - 4:55 amBOI-SAT

6h 57m1 stop

6:00 am - 1:21 pmSAT-BOI

8h 21m1 stop

$194Spirit Airlines

Find Deal

Mon, Oct 20 - Thu, Oct 23

9:26 pm - 7:32 pmBOI-SAT

21h 06m2 stops

9:47 pm - 1:21 pmSAT-BOI

16h 34m1 stop

$205Spirit Airlines

Find Deal

Fri, Sep 5 - Wed, Sep 10

12:22 pm - 7:15 pmBOI-SAT

5h 53m1 stop

9:47 pm - 1:21 pmSAT-BOI

16h 34m1 stop

$222

Find Deal

Thu, Oct 2 - Fri, Oct 3

2:16 pm - 1:23 pmBOI-SAT

22h 07m1 stop

9:47 pm - 1:21 pmSAT-BOI

16h 34m1 stop

$223

Find Deal

Sat, Sep 6 - Wed, Sep 10

12:22 pm - 7:34 pmBOI-SAT

6h 12m1 stop

3:22 pm - 11:37 amSAT-BOI

21h 15m1 stop

$228Frontier

Find Deal

Sun, Sep 7 - Sat, Sep 13

11:53 am - 7:15 pmGEG-SAT

5h 22m1 stop

8:16 pm - 10:58 amSAT-GEG

16h 42m1 stop

$233Frontier

Find Deal

Thu, Sep 4 - Thu, Sep 11

9:00 am - 6:57 pmBOI-SAT

8h 57m1 stop

6:27 am - 1:48 pmSAT-BOI

8h 21m1 stop

$250Alaska Airlines

Find Deal

Tue, Sep 30 - Wed, Oct 1

11:12 am - 5:25 pmBOI-SAT

5h 13m1 stop

6:07 pm - 11:59 pmSAT-BOI

6h 52m1 stop

$251Delta

Find Deal

Tue, Oct 14 - Wed, Oct 15

2:35 pm - 11:52 pmGEG-SAT

7h 17m1 stop

6:02 pm - 11:58 pmSAT-GEG

7h 56m1 stop

$267Delta

Find Deal

Wed, Sep 17 - Tue, Sep 23

4:34 pm - 12:03 amBOI-SAT

6h 29m1 stop

6:27 am - 3:00 pmSAT-BOI

9h 33m1 stop

$268Alaska Airlines

Find Deal

Mon, Sep 8 - Tue, Sep 9

Delta flights from Idaho to San Antonio

Our best Delta deals on Idaho to San Antonio flight tickets

Delta

Oct 14

BOI11:12 amBoise Air Term. Gowen Fld

5h 13m

1 stop

SAT5:25 pmSan Antonio

Oct 15

SAT6:07 pmSan Antonio

6h 52m

1 stop

BOI11:59 pmBoise Air Term. Gowen Fld

$251

Find similar

Delta

Sep 17

GEG2:35 pmSpokane

7h 17m

1 stop

SAT11:52 pmSan Antonio

Sep 23

SAT6:02 pmSan Antonio

7h 56m

1 stop

GEG11:58 pmSpokane

$267

Find similar

Delta

Sep 10

BOI6:00 pmBoise Air Term. Gowen Fld

5h 25m

1 stop

SAT12:25 amSan Antonio

Sep 13

SAT7:15 amSan Antonio

4h 33m

1 stop

BOI10:48 amBoise Air Term. Gowen Fld

$269

Find similar

Spirit Airlines flights from Idaho to San Antonio

Our best Spirit Airlines deals on Idaho to San Antonio flight tickets

Spirit Airlines

Oct 20

BOI8:58 pmBoise Air Term. Gowen Fld

6h 57m

1 stop

SAT4:55 amSan Antonio

Oct 23

SAT6:00 amSan Antonio

8h 21m

1 stop

BOI1:21 pmBoise Air Term. Gowen Fld

$194

Find similar

Spirit Airlines

Sep 5

BOI9:26 pmBoise Air Term. Gowen Fld

21h 06m

2 stops

SAT7:32 pmSan Antonio

Sep 10

SAT9:47 pmSan Antonio

16h 34m

1 stop

BOI1:21 pmBoise Air Term. Gowen Fld

$205

Find similar

Spirit Airlines

Oct 13

BOI8:58 pmBoise Air Term. Gowen Fld

6h 57m

1 stop

SAT4:55 amSan Antonio

Oct 18

SAT6:00 amSan Antonio

8h 21m

1 stop

BOI1:21 pmBoise Air Term. Gowen Fld

$210

Find similar

Fly from

Fly to

Route

Depart

Return

Price

BoiseSan Antonio

BOI - SAT

BOISAT

Boise Air Term. Gowen Fld

Mon 10/20

8:58 pm-4:55 am

1 stop6h 57m

San Antonio

Thu 10/23

6:00 am-1:21 pm

1 stop8h 21m

$194

BoiseSan Antonio

BOI - SAT

BOISAT

Boise Air Term. Gowen Fld

Fri 9/5

9:26 pm-7:32 pm

2 stops21h 06m

San Antonio

Wed 9/10

9:47 pm-1:21 pm

1 stop16h 34m

$205

BoiseSan Antonio

BOI - SAT

BOISAT

Boise Air Term. Gowen Fld

Thu 10/2

12:22 pm-7:15 pm

1 stop5h 53m

San Antonio

Fri 10/3

9:47 pm-1:21 pm

1 stop16h 34m

$222

BoiseSan Antonio

BOI - SAT

BOISAT

Boise Air Term. Gowen Fld

Sat 9/6

2:16 pm-1:23 pm

1 stop22h 07m

San Antonio

Wed 9/10

9:47 pm-1:21 pm

1 stop16h 34m

$223

BoiseSan Antonio

BOI - SAT

BOISAT

Boise Air Term. Gowen Fld

Sun 9/7

12:22 pm-7:34 pm

1 stop6h 12m

San Antonio

Sat 9/13

3:22 pm-11:37 am

1 stop21h 15m

$228

SpokaneSan Antonio

GEG - SAT

GEGSAT

Spokane

Thu 9/4

11:53 am-7:15 pm

1 stop5h 22m

San Antonio

Thu 9/11

8:16 pm-10:58 am

1 stop16h 42m

$233

BoiseSan Antonio

BOI - SAT

BOISAT

Boise Air Term. Gowen Fld

Tue 9/30

9:00 am-6:57 pm

1 stop8h 57m

San Antonio

Wed 10/1

6:27 am-1:48 pm

1 stop8h 21m

$250

BoiseSan Antonio

BOI - SAT

BOISAT

Boise Air Term. Gowen Fld

Tue 10/14

11:12 am-5:25 pm

1 stop5h 13m

San Antonio

Wed 10/15

6:07 pm-11:59 pm

1 stop6h 52m

$251

SpokaneSan Antonio

GEG - SAT

GEGSAT

Spokane

Wed 9/17

2:35 pm-11:52 pm

1 stop7h 17m

San Antonio

Tue 9/23

6:02 pm-11:58 pm

1 stop7h 56m

$267

BoiseSan Antonio

BOI - SAT

BOISAT

Boise Air Term. Gowen Fld

Mon 9/8

4:34 pm-12:03 am

1 stop6h 29m

San Antonio

Tue 9/9

6:27 am-3:00 pm

1 stop9h 33m

$268

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from Idaho 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

Other information

What is the cheapest month to fly to San Antonio?

If you aren’t able to travel during the month of August, then book flights to San Antonio from Idaho during September instead. Flights to San Antonio in September, while not as cheap as those in August, still average around $282.

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 Wednesday when prices can be found for as low as $329. 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 Monday as prices are generally higher than usual. According to our data, the average ticket price to San Antonio on Monday is $445.

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 in the evening. momondo users have found flights departing from Idaho to San Antonio in the evening for as low as $272. 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 at noon, with an average ticket price of $443. Departure times at noon fall within the peak daily travel times, which is why tickets can be more expensive.

How far in advance should I book a flight to San Antonio?

You are more likely to see cheaper flights to San Antonio from Idaho when booking weeks ahead of your departure date. In general, you can expect to find flights to San Antonio for around $371 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to San Antonio from Idaho for as low as $244 on momondo.

Can stopping save me money on Idaho to San Antonio flights?

You could potentially save up to 61% on your flight if you consider stops on a Idaho to San Antonio flight.

Cheap Idaho to San Antonio flight deals and tips

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

Best Price Found	$134
Fastest flight time	4h 33m
Direct flights	None
Airports in San Antonio	1 airport

The best one-way flight to San Antonio from Idaho in the past 72 hours is $134. The best round-trip flight deal from Idaho to San Antonio found on momondo in the last 72 hours is $194.

The fastest flight from Idaho to San Antonio takes 4h 33m

There are no direct flights from Idaho to San Antonio. Popular non-direct routes for this connection are Idaho Falls Fanning Field Airport - San Antonio Airport, Jackson Hole Airport - San Antonio Airport and Spokane Airport - San Antonio Airport.

There is 1 airport near San Antonio: San Antonio (SAT)

Search flight deals

When did momondo last update prices for flights from Idaho to San Antonio Airport?
Prices for flights from Idaho to San Antonio Airport are refreshed on a daily basis.
How many operators does momondo search for flights from Idaho to San Antonio Airport?
As of August 2025, there are 6 operators available to choose from for flights from Idaho to San Antonio Airport.
How old do you have to be to fly from Idaho 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 Idaho to San Antonio Airport.
What documentation or ID do you need to fly to San Antonio Airport?
The travel and health documents required for your trip to San Antonio Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at San Antonio Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

Best airlines flying from Idaho to San Antonio

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

Airline	Rating	Free Cancellation	Price
Spirit Airlines	PriceFrom $130	Free Cancellation	Rating 6.3 8,042 reviews	Search Spirit Airlines flights
Delta	PriceFrom $230	Free Cancellation	Rating 8.0 7,979 reviews	Search Delta flights
American Airlines	PriceFrom $268	Free Cancellation	Rating 7.2 10,000 reviews	Search American Airlines flights
Southwest	PriceFrom $272	Free Cancellation	Rating 8.0 4,248 reviews	Search Southwest flights
United Airlines	PriceFrom $288	Free Cancellation	Rating 7.4 8,920 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 Idaho to San Antonio?

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to San Antonio from Idaho.

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

Flights from Idaho to San Antonio with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

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

Once you have performed a search for Idaho to San Antonio 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 Idaho to San Antonio right now. Can momondo alert me if prices change?

Of course. momondo tracks the price of Idaho to San Antonio flights. All you need is a valid email address and we will do the rest; it is that quick and easy.