How many flights depart from Idaho to San Antonio on average per week?

The number of flights available between Idaho and San Antonio is 2 per week as of June 2026. The most frequent departure day is Tue, with 50% of weekly flights leaving on this day.

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

Frontier, Southwest, and United Airlines are the most popular carriers operating from Idaho to San Antonio

What airlines fly to San Antonio?

Delta, Southwest and United Airlines 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 34% 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.

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 4h 25m on average. On the other hand, flying from Boise to Austin takes 4h 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.

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 June 2026, there are 5 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.

$128 Cheap Flights from Idaho to San Antonio in 2026

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Idaho to San Antonio

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

4:20 pm - 4:19 pm

BOI

SAT

22h 59m

1 stop

11:08 am - 12:04 pm

SAT

BOI

25h 56m

1 stop

$311Multiple Airlines

Tue, Sep 15 - Sat, Sep 19

7:00 pm - 12:26 am

IDA

SAT

4h 26m

1 stop

6:03 pm - 10:32 pm

SAT

IDA

5h 29m

1 stop

$329Delta

Fri, Jul 31 - Sun, Aug 2

2:55 pm - 11:59 pm

BOI

SAT

8h 04m

1 stop

6:00 am - 11:26 am

SAT

BOI

6h 26m

1 stop

$333American Airlines

Sat, Oct 24 - Tue, Oct 27

6:25 am - 1:55 pm

BOI

SAT

6h 30m

1 stop

6:40 am - 1:40 pm

SAT

BOI

8h 00m

2 stops

$338Southwest

Tue, Sep 15 - Tue, Sep 22

1:55 pm - 10:50 pm

BOI

SAT

7h 55m

2 stops

2:45 pm - 10:40 pm

SAT

BOI

8h 55m

2 stops

$343American Airlines

Tue, Aug 18 - Tue, Aug 25

6:05 pm - 12:05 am

BOI

SAT

5h 00m

1 stop

4:25 pm - 11:00 pm

SAT

BOI

7h 35m

2 stops

$359Southwest

Mon, Oct 5 - Tue, Oct 6

4:18 pm - 11:55 pm

GEG

SAT

5h 37m

1 stop

12:00 pm - 10:36 pm

SAT

GEG

12h 36m

2 stops

$374United Airlines

Wed, Aug 5 - Wed, Aug 12

6:23 am - 4:13 pm

BOI

SAT

8h 50m

1 stop

5:11 pm - 11:44 pm

SAT

BOI

7h 33m

1 stop

$378Alaska Airlines

Tue, Aug 25 - Wed, Aug 26

5:54 pm - 11:55 pm

IDA

SAT

5h 01m

1 stop

5:30 am - 9:50 am

SAT

IDA

5h 20m

1 stop

$412United Airlines

Fri, Jul 31 - Sun, Aug 2

3:10 pm - 4:13 pm

JAC

SAT

24h 03m

2 stops

5:17 pm - 11:22 am

SAT

JAC

19h 05m

1 stop

$486Alaska Airlines

Sat, Sep 5 - Sat, Sep 12

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Alaska Airlines flights from Idaho to San Antonio

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

Alaska Airlines

Aug 25

BOI6:23 amBoise Air Term. Gowen Fld

8h 50m

1 stop

SAT4:13 pmSan Antonio

Aug 26

SAT5:11 pmSan Antonio

7h 33m

1 stop

BOI11:44 pmBoise Air Term. Gowen Fld

$378

Alaska Airlines

Aug 4

GEG7:45 pmSpokane

7h 15m

1 stop

SAT5:00 amSan Antonio

Aug 11

SAT2:57 pmSan Antonio

11h 02m

2 stops

GEG11:59 pmSpokane

$424

Alaska Airlines

Aug 25

BOI8:03 amBoise Air Term. Gowen Fld

11h 54m

2 stops

SAT8:57 pmSan Antonio

Aug 26

SAT10:59 amSan Antonio

10h 21m

2 stops

BOI8:20 pmBoise Air Term. Gowen Fld

$443

United Airlines flights from Idaho to San Antonio

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

United Airlines

Aug 5

GEG4:18 pmSpokane

5h 37m

1 stop

SAT11:55 pmSan Antonio

Aug 12

SAT12:00 pmSan Antonio

12h 36m

2 stops

GEG10:36 pmSpokane

$374

United Airlines

Jul 31

IDA5:54 pmIdaho Falls Fanning Field

5h 01m

1 stop

SAT11:55 pmSan Antonio

Aug 2

SAT5:30 amSan Antonio

5h 20m

1 stop

IDA9:50 amIdaho Falls Fanning Field

$412

United Airlines

Sep 23

IDA4:04 pmIdaho Falls Fanning Field

6h 53m

1 stop

SAT11:57 pmSan Antonio

Sep 26

SAT5:30 amSan Antonio

5h 23m

1 stop

IDA9:53 amIdaho Falls Fanning Field

$419

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

BoiseSan Antonio

BOI - SAT

BOISAT

Boise Air Term. Gowen Fld

Tue 9/15

4:20 pm-4:19 pm

1 stop22h 59m

San Antonio

Sat 9/19

11:08 am-12:04 pm

1 stop25h 56m

$311

Quickest round-trip

Idaho FallsSan Antonio

IDA - SAT

IDASAT

Idaho Falls Fanning Field

Fri 7/31

7:00 pm-12:26 am

1 stop4h 26m

San Antonio

Sun 8/2

6:03 pm-10:32 pm

1 stop5h 29m

$329

BoiseSan Antonio

BOI - SAT

BOISAT

Boise Air Term. Gowen Fld

Sat 10/24

2:55 pm-11:59 pm

1 stop8h 04m

San Antonio

Tue 10/27

6:00 am-11:26 am

1 stop6h 26m

$333

BoiseSan Antonio

BOI - SAT

BOISAT

Boise Air Term. Gowen Fld

Tue 9/15

6:25 am-1:55 pm

1 stop6h 30m

San Antonio

Tue 9/22

6:40 am-1:40 pm

2 stops8h 00m

$338

BoiseSan Antonio

BOI - SAT

BOISAT

Boise Air Term. Gowen Fld

Tue 8/18

1:55 pm-10:50 pm

2 stops7h 55m

San Antonio

Tue 8/25

2:45 pm-10:40 pm

2 stops8h 55m

$343

BoiseSan Antonio

BOI - SAT

BOISAT

Boise Air Term. Gowen Fld

Mon 10/5

6:05 pm-12:05 am

1 stop5h 00m

San Antonio

Tue 10/6

4:25 pm-11:00 pm

2 stops7h 35m

$359

SpokaneSan Antonio

GEG - SAT

GEGSAT

Spokane

Wed 8/5

4:18 pm-11:55 pm

1 stop5h 37m

San Antonio

Wed 8/12

12:00 pm-10:36 pm

2 stops12h 36m

$374

BoiseSan Antonio

BOI - SAT

BOISAT

Boise Air Term. Gowen Fld

Tue 8/25

6:23 am-4:13 pm

1 stop8h 50m

San Antonio

Wed 8/26

5:11 pm-11:44 pm

1 stop7h 33m

$378

Idaho FallsSan Antonio

IDA - SAT

IDASAT

Idaho Falls Fanning Field

Fri 7/31

5:54 pm-11:55 pm

1 stop5h 01m

San Antonio

Sun 8/2

5:30 am-9:50 am

1 stop5h 20m

$412

JacksonSan Antonio

JAC - SAT

JACSAT

Jackson Hole

Sat 9/5

3:10 pm-4:13 pm

2 stops24h 03m

San Antonio

Sat 9/12

5:17 pm-11:22 am

1 stop19h 05m

$486

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

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Other information

What is the cheapest month to fly to San Antonio?

If you aren’t able to travel during the month of September, then book flights to San Antonio from Idaho during July instead. Flights to San Antonio in July, while not as cheap as those in September, still average around $131.

How far in advance should I book a flight from Idaho 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 $433 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 $265 on momondo.

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

You could potentially save up to 59% 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

Fastest flight time	4h 16m
Direct flights	None

The fastest flight from Idaho to San Antonio takes 4h 16m

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

Search flight deals

Frequently asked questions about flying 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 June 2026, there are 5 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
Delta	PriceFrom $166	Free Cancellation	Rating 7.8 8,440 reviews	Search Delta flights
United Airlines	PriceFrom $208	Free Cancellation	Rating 7.4 9,887 reviews	Search United Airlines flights
American Airlines	PriceFrom $266	Free Cancellation	Rating 7.1 11,756 reviews	Search American Airlines flights
Southwest	PriceFrom $290	Free Cancellation	Rating 7.9 4,243 reviews	Search Southwest flights
Alaska Airlines	PriceFrom $303	Free Cancellation	Rating 7.9 12,573 reviews	Search Alaska Airlines flights

New Braunfels

Kerrville

Pleasanton

Boerne

Schertz

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.

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Cheap flights from Idaho to San Antonio from $128

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Idaho to San Antonio departing on 8/27. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

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Alaska Airlines flights from Idaho to San Antonio

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

United Airlines flights from Idaho to San Antonio

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

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

What is the cheapest month to fly to San Antonio?

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

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

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

What airlines fly to San Antonio?

How many flights depart from Idaho to San Antonio on average per week?

How long does it take to fly to San Antonio?

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

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Frequently asked questions about flying from Idaho to San Antonio

Best airlines flying from Idaho to San Antonio

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

Traveling to a place near San Antonio?

Why use momondo?

An easier way to manage your San Antonio trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

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List of cabin classes available on flights landing in San Antonio. Availability may vary depending on flight origin and airline.

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