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Cheap flights from Idaho to San Antonio from $131

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 4/5. 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

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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.
Frontier Logo
12:03 pm - 12:19 am
BOI
-
SAT
11h 16m
1 stop
Frontier Logo
6:45 am - 11:08 am
SAT
-
BOI
5h 23m
1 stop
$200Frontier
Sun, Apr 5 - Thu, Apr 9
Frontier Logo
12:03 pm - 12:19 am
BOI
-
SAT
11h 16m
1 stop
Frontier Logo
4:04 pm - 11:08 am
SAT
-
BOI
20h 04m
1 stop
$216Frontier
Sun, Apr 12 - Sat, Apr 18
Southwest Logo
2:00 pm - 9:40 pm
BOI
-
SAT
6h 40m
1 stop
Southwest Logo
7:15 pm - 12:25 am
SAT
-
BOI
6h 10m
1 stop
$263Southwest
Tue, Apr 21 - Tue, Apr 28
Southwest Logo
5:15 pm - 11:30 pm
BOI
-
SAT
5h 15m
1 stop
Southwest Logo
4:25 pm - 11:30 pm
SAT
-
BOI
8h 05m
2 stops
$268Southwest
Tue, Apr 21 - Tue, Apr 28
United Airlines Logo
5:46 pm - 11:59 pm
BOI
-
SAT
5h 13m
1 stop
United Airlines Logo
5:30 am - 9:45 am
SAT
-
BOI
5h 15m
1 stop
$285United Airlines
Thu, Jun 4 - Tue, Jun 9
Delta Logo
11:35 pm - 9:46 am
BOI
-
SAT
9h 11m
1 stop
Delta Logo
6:20 am - 1:07 pm
SAT
-
BOI
7h 47m
1 stop
$290Delta
Wed, Apr 29 - Sat, May 2
Delta Logo
2:18 pm - 12:46 am
BOI
-
SAT
9h 28m
1 stop
Delta Logo
6:39 am - 2:26 pm
SAT
-
BOI
8h 47m
1 stop
$297Delta
Wed, Apr 22 - Thu, Apr 23
United Airlines Logo
5:00 am - 12:56 pm
GEG
-
SAT
5h 56m
1 stop
United Airlines Logo
4:35 pm - 9:16 pm
SAT
-
GEG
6h 41m
1 stop
$369United Airlines
Tue, May 12 - Fri, May 15
Multiple Airlines Logo
10:21 pm - 3:09 pm
IDA
-
SAT
15h 48m
2 stops
Multiple Airlines Logo
12:46 pm - 3:27 pm
SAT
-
IDA
27h 41m
1 stop
$380Multiple Airlines
Mon, Apr 27 - Thu, Apr 30
Multiple Airlines Logo
10:21 pm - 3:09 pm
IDA
-
SAT
15h 48m
2 stops
Multiple Airlines Logo
12:46 pm - 3:27 pm
SAT
-
IDA
27h 41m
1 stop
$388Multiple Airlines
Mon, Apr 27 - Thu, Apr 30

Frontier flights from Idaho to San Antonio

Our best Frontier deals on Idaho to San Antonio flight tickets
Frontier
Apr 5
BOI12:03 pmBoise Air Term. Gowen Fld
11h 16m
1 stop
SAT12:19 amSan Antonio
Apr 9
SAT6:45 amSan Antonio
5h 23m
1 stop
BOI11:08 amBoise Air Term. Gowen Fld
$200
Frontier
Apr 12
BOI12:03 pmBoise Air Term. Gowen Fld
11h 16m
1 stop
SAT12:19 amSan Antonio
Apr 18
SAT4:04 pmSan Antonio
20h 04m
1 stop
BOI11:08 amBoise Air Term. Gowen Fld
$216
Frontier
Apr 12
BOI12:03 pmBoise Air Term. Gowen Fld
11h 16m
1 stop
SAT12:19 amSan Antonio
Apr 18
SAT4:04 pmSan Antonio
20h 04m
1 stop
BOI11:08 amBoise Air Term. Gowen Fld
$236

American Airlines flights from Idaho to San Antonio

Our best American Airlines deals on Idaho to San Antonio flight tickets
American Airlines
May 2
BOI2:14 pmBoise Air Term. Gowen Fld
7h 51m
1 stop
SAT11:05 pmSan Antonio
May 28
SAT6:04 amSan Antonio
9h 16m
1 stop
BOI2:20 pmBoise Air Term. Gowen Fld
$337
American Airlines
May 2
BOI2:14 pmBoise Air Term. Gowen Fld
8h 42m
2 stops
SAT11:56 pmSan Antonio
May 28
SAT6:04 amSan Antonio
9h 16m
1 stop
BOI2:20 pmBoise Air Term. Gowen Fld
$342
American Airlines
May 2
BOI2:14 pmBoise Air Term. Gowen Fld
7h 51m
1 stop
SAT11:05 pmSan Antonio
May 28
SAT5:00 amSan Antonio
7h 19m
1 stop
BOI11:19 amBoise Air Term. Gowen Fld
$361

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 March 25, 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 - SAT

BOISAT

Boise Air Term. Gowen Fld

Sun 4/5

12:03 pm-12:19 am

1 stop11h 16m

San Antonio

Thu 4/9

6:45 am-11:08 am

1 stop5h 23m

$200

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

4:04 pm-11:08 am

1 stop20h 04m

$216

BoiseSan Antonio

BOI - SAT

BOISAT

Boise Air Term. Gowen Fld

Tue 4/21

2:00 pm-9:40 pm

1 stop6h 40m

San Antonio

Tue 4/28

7:15 pm-12:25 am

1 stop6h 10m

$263

BoiseSan Antonio

BOI - SAT

BOISAT

Boise Air Term. Gowen Fld

Tue 4/21

5:15 pm-11:30 pm

1 stop5h 15m

San Antonio

Tue 4/28

4:25 pm-11:30 pm

2 stops8h 05m

$268
Quickest round-trip

BoiseSan Antonio

BOI - SAT

BOISAT

Boise Air Term. Gowen Fld

Thu 6/4

5:46 pm-11:59 pm

1 stop5h 13m

San Antonio

Tue 6/9

5:30 am-9:45 am

1 stop5h 15m

$285

BoiseSan Antonio

BOI - SAT

BOISAT

Boise Air Term. Gowen Fld

Wed 4/29

11:35 pm-9:46 am

1 stop9h 11m

San Antonio

Sat 5/2

6:20 am-1:07 pm

1 stop7h 47m

$290

BoiseSan Antonio

BOI - SAT

BOISAT

Boise Air Term. Gowen Fld

Wed 4/22

2:18 pm-12:46 am

1 stop9h 28m

San Antonio

Thu 4/23

6:39 am-2:26 pm

1 stop8h 47m

$297

SpokaneSan Antonio

GEG - SAT

GEGSAT

Spokane

Tue 5/12

5:00 am-12:56 pm

1 stop5h 56m

San Antonio

Fri 5/15

4:35 pm-9:16 pm

1 stop6h 41m

$369

Idaho FallsSan Antonio

IDA - SAT

IDASAT

Idaho Falls Fanning Field

Mon 4/27

10:21 pm-3:09 pm

2 stops15h 48m

San Antonio

Thu 4/30

12:46 pm-3:27 pm

1 stop27h 41m

$380

Idaho FallsSan Antonio

IDA - SAT

IDASAT

Idaho Falls Fanning Field

Mon 4/27

10:21 pm-3:09 pm

2 stops15h 48m

San Antonio

Thu 4/30

12:46 pm-3:27 pm

1 stop27h 41m

$388

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 January, then book flights to San Antonio from Idaho during August instead. Flights to San Antonio in August, while not as cheap as those in January, still average around $276.

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 $383 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 $194 on momondo.

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

You could potentially save up to 49% 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
8,327 reviews
Search Delta flights
United AirlinesPriceFrom $208Free CancellationRating
7.4
9,477 reviews
Search United Airlines flights
SouthwestPriceFrom $230Free CancellationRating
8.0
4,332 reviews
Search Southwest flights
American AirlinesPriceFrom $259Free CancellationRating
7.1
11,494 reviews
Search American Airlines flights
Alaska AirlinesPriceFrom $303Free CancellationRating
7.9
12,108 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
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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