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Cheap flights from Idaho to San Antonio from $101

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 4/9. 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
0 bags

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Find the cheapest flights from Idaho to San Antonio

Cheap round-trip flights

Enter your travel dates to find the best prices.
Delta Logo
10:45 am - 5:10 pm
BOI
-
SAT
5h 25m
1 stop
Delta Logo
6:02 pm - 11:11 pm
SAT
-
BOI
6h 09m
1 stop
$197Delta
Wed, Apr 29 - Sat, May 2
American Airlines Logo
6:00 am - 2:18 pm
GEG
-
SAT
6h 18m
1 stop
American Airlines Logo
7:09 pm - 11:14 pm
SAT
-
GEG
6h 05m
1 stop
$197American Airlines
Wed, Mar 4 - Wed, Mar 11
Frontier Logo
12:03 pm - 12:19 am
BOI
-
SAT
11h 16m
1 stop
Frontier Logo
3:34 pm - 11:08 am
SAT
-
BOI
20h 34m
1 stop
$222Frontier
Sun, Apr 12 - Sat, Apr 18
Frontier Logo
12:38 pm - 12:56 am
BOI
-
SAT
11h 18m
1 stop
Frontier Logo
6:45 am - 11:20 am
SAT
-
BOI
5h 35m
1 stop
$228Frontier
Thu, Mar 5 - Thu, Mar 12
United Airlines Logo
6:15 am - 1:00 pm
BOI
-
SAT
5h 45m
1 stop
United Airlines Logo
1:11 pm - 6:17 pm
SAT
-
BOI
6h 06m
1 stop
$237United Airlines
Wed, Apr 29 - Sat, May 2
United Airlines Logo
6:15 am - 1:00 pm
BOI
-
SAT
5h 45m
1 stop
United Airlines Logo
1:11 pm - 10:16 pm
SAT
-
BOI
10h 05m
2 stops
$242United Airlines
Wed, Apr 29 - Sat, May 2
United Airlines Logo
1:44 pm - 8:56 pm
GEG
-
SAT
5h 12m
1 stop
United Airlines Logo
11:53 am - 9:03 pm
SAT
-
GEG
11h 10m
2 stops
$242United Airlines
Wed, Mar 4 - Wed, Mar 11
Frontier Logo
12:03 pm - 12:19 am
BOI
-
SAT
11h 16m
1 stop
Frontier Logo
3:34 pm - 11:08 am
SAT
-
BOI
20h 34m
1 stop
$257Frontier
Sun, Apr 12 - Sat, Apr 18
Southwest Logo
4:05 pm - 10:05 pm
BOI
-
SAT
5h 00m
1 stop
Southwest Logo
10:00 am - 4:15 pm
SAT
-
BOI
7h 15m
1 stop
$267Southwest
Wed, Apr 29 - Sat, May 2
Multiple Airlines Logo
11:32 am - 12:17 am
GEG
-
SAT
10h 45m
1 stop
Multiple Airlines Logo
5:50 pm - 11:59 pm
SAT
-
GEG
8h 09m
1 stop
$318Multiple Airlines
Thu, Mar 19 - Mon, Mar 23

Frontier flights from Idaho to San Antonio

Our best Frontier deals on Idaho to San Antonio flight tickets
Frontier
Apr 12
BOI12:03 pmBoise Air Term. Gowen Fld
11h 16m
1 stop
SAT12:19 amSan Antonio
Apr 18
SAT3:34 pmSan Antonio
20h 34m
1 stop
BOI11:08 amBoise Air Term. Gowen Fld
$222
Frontier
Mar 5
BOI12:38 pmBoise Air Term. Gowen Fld
11h 18m
1 stop
SAT12:56 amSan Antonio
Mar 12
SAT6:45 amSan Antonio
5h 35m
1 stop
BOI11:20 amBoise Air Term. Gowen Fld
$228
Frontier
Apr 12
BOI12:03 pmBoise Air Term. Gowen Fld
11h 16m
1 stop
SAT12:19 amSan Antonio
Apr 18
SAT3:34 pmSan Antonio
20h 34m
1 stop
BOI11:08 amBoise Air Term. Gowen Fld
$257

United Airlines flights from Idaho to San Antonio

Our best United Airlines deals on Idaho to San Antonio flight tickets
United Airlines
Apr 15
BOI5:00 amBoise Air Term. Gowen Fld
9h 46m
2 stops
SAT3:46 pmSan Antonio
Apr 22
SAT8:45 amSan Antonio
5h 46m
1 stop
BOI1:31 pmBoise Air Term. Gowen Fld
$242
United Airlines
May 2
BOI5:00 amBoise Air Term. Gowen Fld
6h 56m
1 stop
SAT12:56 pmSan Antonio
May 6
SAT2:25 pmSan Antonio
8h 51m
2 stops
BOI10:16 pmBoise Air Term. Gowen Fld
$274
United Airlines
May 2
BOI5:00 amBoise Air Term. Gowen Fld
7h 16m
2 stops
SAT1:16 pmSan Antonio
May 6
SAT2:25 pmSan Antonio
8h 51m
2 stops
BOI10:16 pmBoise Air Term. Gowen Fld
$280

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 February 8, 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

BoiseSan Antonio

BOI - SAT

BOISAT

Boise Air Term. Gowen Fld

Wed 4/29

10:45 am-5:10 pm

1 stop5h 25m

San Antonio

Sat 5/2

6:02 pm-11:11 pm

1 stop6h 09m

$197

SpokaneSan Antonio

GEG - SAT

GEGSAT

Spokane

Wed 3/4

6:00 am-2:18 pm

1 stop6h 18m

San Antonio

Wed 3/11

7:09 pm-11:14 pm

1 stop6h 05m

$197

BoiseSan Antonio

BOI - SAT

BOISAT

Boise Air Term. Gowen Fld

Sun 4/12

12:03 pm-12:19 am

1 stop11h 16m

San Antonio

Sat 4/18

3:34 pm-11:08 am

1 stop20h 34m

$222

BoiseSan Antonio

BOI - SAT

BOISAT

Boise Air Term. Gowen Fld

Thu 3/5

12:38 pm-12:56 am

1 stop11h 18m

San Antonio

Thu 3/12

6:45 am-11:20 am

1 stop5h 35m

$228

BoiseSan Antonio

BOI - SAT

BOISAT

Boise Air Term. Gowen Fld

Wed 4/29

6:15 am-1:00 pm

1 stop5h 45m

San Antonio

Sat 5/2

1:11 pm-6:17 pm

1 stop6h 06m

$237

BoiseSan Antonio

BOI - SAT

BOISAT

Boise Air Term. Gowen Fld

Wed 4/29

6:15 am-1:00 pm

1 stop5h 45m

San Antonio

Sat 5/2

1:11 pm-10:16 pm

2 stops10h 05m

$242

SpokaneSan Antonio

GEG - SAT

GEGSAT

Spokane

Wed 3/4

1:44 pm-8:56 pm

1 stop5h 12m

San Antonio

Wed 3/11

11:53 am-9:03 pm

2 stops11h 10m

$242

BoiseSan Antonio

BOI - SAT

BOISAT

Boise Air Term. Gowen Fld

Sun 4/12

12:03 pm-12:19 am

1 stop11h 16m

San Antonio

Sat 4/18

3:34 pm-11:08 am

1 stop20h 34m

$257

BoiseSan Antonio

BOI - SAT

BOISAT

Boise Air Term. Gowen Fld

Wed 4/29

4:05 pm-10:05 pm

1 stop5h 00m

San Antonio

Sat 5/2

10:00 am-4:15 pm

1 stop7h 15m

$267

SpokaneSan Antonio

GEG - SAT

GEGSAT

Spokane

Thu 3/19

11:32 am-12:17 am

1 stop10h 45m

San Antonio

Mon 3/23

5:50 pm-11:59 pm

1 stop8h 09m

$318

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 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 $278.

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 $374 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 70% 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 27m

Direct flights

None
The fastest flight from Idaho to San Antonio takes 4h 27m
There are no direct flights from Idaho to San Antonio. There are no popular flight routes from Idaho to San Antonio.
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?

  • 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 $131Free CancellationRating
7.9
8,169 reviews
Search Delta flights
United AirlinesPriceFrom $208Free CancellationRating
7.4
9,249 reviews
Search United Airlines flights
SouthwestPriceFrom $230Free CancellationRating
8.0
4,280 reviews
Search Southwest flights
American AirlinesPriceFrom $259Free CancellationRating
7.2
11,248 reviews
Search American 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
Kerrville
Boerne
Pleasanton
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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