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Cheap flights from Idaho to San Antonio from $113

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 9/9. 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
1 adult, Economy, 0 bags

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Idaho to San Antonio

Cheap round-trip flights

Enter your travel dates to find the best prices.
Frontier Logo
2:50 pm - 2:20 pmBOI  Boise Air Term. Gowen Fld-SAT San Antonio
22h 30m1 stop Las Vegas Harry Reid Intl
Frontier Logo
10:41 pm - 2:57 pmSAT  San Antonio-BOI Boise Air Term. Gowen Fld
17h 16m1 stop Las Vegas Harry Reid Intl
$202Frontier
Mon, Oct 5 - Sun, Oct 11
American Airlines Logo
1:50 pm - 9:59 pmBOI  Boise Air Term. Gowen Fld-SAT San Antonio
7h 09m1 stop Dallas/Fort Worth
American Airlines Logo
6:00 am - 1:00 pmSAT  San Antonio-BOI Boise Air Term. Gowen Fld
8h 00m1 stop Dallas/Fort Worth
$225American Airlines
Sat, Sep 26 - Wed, Sep 30
Delta Logo
4:00 pm - 11:47 pmBOI  Boise Air Term. Gowen Fld-SAT San Antonio
6h 47m1 stop Los Angeles Los Angeles
Delta Logo
4:50 pm - 10:59 pmSAT  San Antonio-BOI Boise Air Term. Gowen Fld
7h 09m1 stop Los Angeles Los Angeles
$225Delta
Wed, Sep 9 - Tue, Sep 15
American Airlines Logo
12:14 pm - 9:07 pmBOI  Boise Air Term. Gowen Fld-SAT San Antonio
7h 53m1 stop Dallas/Fort Worth
American Airlines Logo
8:17 am - 1:22 pmSAT  San Antonio-BOI Boise Air Term. Gowen Fld
6h 05m1 stop Phoenix Sky Harbor Intl
$225American Airlines
Sat, Oct 24 - Tue, Oct 27
Southwest Logo
6:35 am - 1:55 pmBOI  Boise Air Term. Gowen Fld-SAT San Antonio
6h 20m1 stop Las Vegas Harry Reid Intl
Southwest Logo
6:55 am - 12:05 pmSAT  San Antonio-BOI Boise Air Term. Gowen Fld
6h 10m1 stop San Diego
$226Southwest
Wed, Oct 28 - Sat, Oct 31
Southwest Logo
1:25 pm - 9:35 pmBOI  Boise Air Term. Gowen Fld-SAT San Antonio
7h 10m2 stops Oakland Las Vegas Harry Reid Intl
Southwest Logo
6:00 am - 10:05 amSAT  San Antonio-BOI Boise Air Term. Gowen Fld
5h 05m1 stop Denver Intl
$227Southwest
Wed, Oct 28 - Sat, Oct 31
United Airlines Logo
5:00 am - 12:43 pmBOI  Boise Air Term. Gowen Fld-SAT San Antonio
6h 43m1 stop Denver Intl
United Airlines Logo
7:35 am - 3:31 pmSAT  San Antonio-BOI Boise Air Term. Gowen Fld
8h 56m2 stops Houston George Bush Intcntl San Francisco
$230United Airlines
Wed, Sep 9 - Tue, Sep 15
Frontier Logo
2:50 pm - 7:25 pmBOI  Boise Air Term. Gowen Fld-SAT San Antonio
27h 35m2 stops Las Vegas Harry Reid Intl Denver Intl
Frontier Logo
10:41 pm - 2:57 pmSAT  San Antonio-BOI Boise Air Term. Gowen Fld
17h 16m1 stop Las Vegas Harry Reid Intl
$252Frontier
Mon, Oct 5 - Sun, Oct 11
Delta Logo
5:09 pm - 12:30 amGEG  Spokane-SAT San Antonio
5h 21m1 stop Salt Lake City
Delta Logo
6:35 am - 12:19 pmSAT  San Antonio-GEG Spokane
7h 44m1 stop Salt Lake City
$261Delta
Tue, Oct 13 - Tue, Nov 3
United Airlines Logo
5:00 am - 12:46 pmGEG  Spokane-SAT San Antonio
5h 46m1 stop Denver Intl
United Airlines Logo
4:45 pm - 9:09 pmSAT  San Antonio-GEG Spokane
6h 24m1 stop Denver Intl
$296United Airlines
Mon, Nov 23 - Wed, Dec 2

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Frontier flights from Idaho to San Antonio

Our best Frontier deals on Idaho to San Antonio flight tickets
Frontier
Oct 5
BOI2:50 pmBoise Air Term. Gowen Fld
22h 30m
1 stop
SAT2:20 pmSan Antonio
Oct 11
SAT10:41 pmSan Antonio
17h 16m
1 stop
BOI2:57 pmBoise Air Term. Gowen Fld
$202
Frontier
Oct 5
BOI2:50 pmBoise Air Term. Gowen Fld
27h 35m
2 stops
SAT7:25 pmSan Antonio
Oct 11
SAT10:41 pmSan Antonio
17h 16m
1 stop
BOI2:57 pmBoise Air Term. Gowen Fld
$252
Frontier
Sep 3
BOI12:24 pmBoise Air Term. Gowen Fld
6h 07m
1 stop
SAT7:31 pmSan Antonio
Sep 9
SAT3:19 pmSan Antonio
23h 36m
1 stop
BOI1:55 pmBoise Air Term. Gowen Fld
$256

Delta flights from Idaho to San Antonio

Our best Delta deals on Idaho to San Antonio flight tickets
Delta
Sep 9
BOI4:00 pmBoise Air Term. Gowen Fld
6h 47m
1 stop
SAT11:47 pmSan Antonio
Sep 15
SAT4:50 pmSan Antonio
7h 09m
1 stop
BOI10:59 pmBoise Air Term. Gowen Fld
$225
Delta
Oct 13
GEG5:09 pmSpokane
5h 21m
1 stop
SAT12:30 amSan Antonio
Nov 3
SAT6:35 amSan Antonio
7h 44m
1 stop
GEG12:19 pmSpokane
$261
Delta
Oct 23
BOI6:50 pmBoise Air Term. Gowen Fld
4h 40m
1 stop
SAT12:30 amSan Antonio
Oct 27
SAT7:50 amSan Antonio
7h 57m
1 stop
BOI2:47 pmBoise Air Term. Gowen Fld
$284

momondo Fare Finder

 
Customize your flight search to find flights from Idaho to San Antonio 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 August 11, 2026.
Use the filters below to find and compare flights from Idaho to San Antonio that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

BoiseSan Antonio

BOI Boise Air Term. Gowen Fld - SAT San Antonio

BOISAT

Boise Air Term. Gowen Fld

Mon 10/5

2:50 pm-2:20 pm

1 stop22h 30m

San Antonio

Sun 10/11

10:41 pm-2:57 pm

1 stop17h 16m

$202

BoiseSan Antonio

BOI Boise Air Term. Gowen Fld - SAT San Antonio

BOISAT

Boise Air Term. Gowen Fld

Sat 9/26

1:50 pm-9:59 pm

1 stop7h 09m

San Antonio

Wed 9/30

6:00 am-1:00 pm

1 stop8h 00m

$225

BoiseSan Antonio

BOI Boise Air Term. Gowen Fld - SAT San Antonio

BOISAT

Boise Air Term. Gowen Fld

Wed 9/9

4:00 pm-11:47 pm

1 stop6h 47m

San Antonio

Tue 9/15

4:50 pm-10:59 pm

1 stop7h 09m

$225

BoiseSan Antonio

BOI Boise Air Term. Gowen Fld - SAT San Antonio

BOISAT

Boise Air Term. Gowen Fld

Sat 10/24

12:14 pm-9:07 pm

1 stop7h 53m

San Antonio

Tue 10/27

8:17 am-1:22 pm

1 stop6h 05m

$225

BoiseSan Antonio

BOI Boise Air Term. Gowen Fld - SAT San Antonio

BOISAT

Boise Air Term. Gowen Fld

Wed 10/28

6:35 am-1:55 pm

1 stop6h 20m

San Antonio

Sat 10/31

6:55 am-12:05 pm

1 stop6h 10m

$226

BoiseSan Antonio

BOI Boise Air Term. Gowen Fld - SAT San Antonio

BOISAT

Boise Air Term. Gowen Fld

Wed 10/28

1:25 pm-9:35 pm

2 stops7h 10m

San Antonio

Sat 10/31

6:00 am-10:05 am

1 stop5h 05m

$227

BoiseSan Antonio

BOI Boise Air Term. Gowen Fld - SAT San Antonio

BOISAT

Boise Air Term. Gowen Fld

Wed 9/9

5:00 am-12:43 pm

1 stop6h 43m

San Antonio

Tue 9/15

7:35 am-3:31 pm

2 stops8h 56m

$230

BoiseSan Antonio

BOI Boise Air Term. Gowen Fld - SAT San Antonio

BOISAT

Boise Air Term. Gowen Fld

Mon 10/5

2:50 pm-7:25 pm

2 stops27h 35m

San Antonio

Sun 10/11

10:41 pm-2:57 pm

1 stop17h 16m

$252

SpokaneSan Antonio

GEG Spokane - SAT San Antonio

GEGSAT

Spokane

Tue 10/13

5:09 pm-12:30 am

1 stop5h 21m

San Antonio

Tue 11/3

6:35 am-12:19 pm

1 stop7h 44m

$261
Quickest round-trip

SpokaneSan Antonio

GEG Spokane - SAT San Antonio

GEGSAT

Spokane

Mon 11/23

5:00 am-12:46 pm

1 stop5h 46m

San Antonio

Wed 12/2

4:45 pm-9:09 pm

1 stop6h 24m

$296

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to San Antonio from

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

What is the cheapest month to fly to San Antonio?

If you aren’t able to travel during the month of April, then book flights to San Antonio from Idaho during January instead. Flights to San Antonio in January, while not as cheap as those in April, still average around $389.

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 $469 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 $237 on momondo.

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

You could potentially save up to 69% 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 26m

Direct flights

None
The fastest flight from Idaho to San Antonio takes 4h 26m
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?

  • 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
DeltaPriceFrom $196Free CancellationRating
7.8
8,505 reviews
Search Delta flights
United AirlinesPriceFrom $208Free CancellationRating
7.4
10,104 reviews
Search United Airlines flights
SouthwestPriceFrom $290Free CancellationRating
8.0
4,220 reviews
Search Southwest flights
American AirlinesPriceFrom $293Free CancellationRating
7.1
11,903 reviews
Search American Airlines flights
Alaska AirlinesPriceFrom $303Free CancellationRating
7.9
12,795 reviews
Search Alaska Airlines flights

Traveling to a place near San Antonio?

Book flights to San Antonio if you plan to visit one of these locations
New Braunfels
Pleasanton
Kerrville
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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