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Cheap flights from Idaho to San Antonio from $127

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 10/23. 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

Frontier Logo
12:03 pm - 7:41 pmGEG-SAT
5h 38m1 stop
Frontier Logo
3:12 pm - 12:08 pmSAT-GEG
22h 56m1 stop
$210Frontier
Find Deal
jue., oct. 23 - sáb., nov. 1
Multiple Airlines Logo
9:08 pm - 1:19 pmGEG-SAT
14h 11m1 stop
Multiple Airlines Logo
3:12 pm - 12:08 pmSAT-GEG
22h 56m1 stop
$242Multiple Airlines
Find Deal
jue., oct. 23 - sáb., nov. 1
Alaska Airlines Logo
5:38 pm - 12:05 amBOI-SAT
29h 27m1 stop
Alaska Airlines Logo
6:32 am - 4:17 pmSAT-BOI
10h 45m1 stop
$256Alaska Airlines
Find Deal
sáb., oct. 25 - sáb., nov. 1
Alaska Airlines Logo
7:34 pm - 12:04 amGEG-SAT
26h 30m1 stop
Alaska Airlines Logo
7:56 pm - 8:20 amSAT-GEG
14h 24m1 stop
$256Alaska Airlines
Find Deal
mié., oct. 22 - vie., oct. 24
Delta Logo
11:41 am - 11:46 pmBOI-SAT
11h 05m2 stops
Delta Logo
12:40 pm - 8:16 pmSAT-BOI
8h 36m2 stops
$268Delta
Find Deal
sáb., oct. 25 - sáb., nov. 1
Multiple Airlines Logo
9:08 pm - 4:37 pmGEG-SAT
41h 29m2 stops
Multiple Airlines Logo
3:12 pm - 12:08 pmSAT-GEG
22h 56m1 stop
$271Multiple Airlines
Find Deal
jue., oct. 23 - sáb., nov. 1
Delta Logo
1:39 pm - 11:07 pmBOI-SAT
8h 28m1 stop
Delta Logo
4:51 pm - 10:52 pmSAT-BOI
7h 01m1 stop
$291Delta
Find Deal
jue., oct. 23 - jue., oct. 30
United Airlines Logo
12:35 pm - 10:35 pmBOI-SAT
9h 00m2 stops
United Airlines Logo
4:30 pm - 10:37 pmSAT-BOI
7h 07m1 stop
$296United Airlines
Find Deal
sáb., oct. 25 - sáb., nov. 1
Hawaiian Airlines Logo
2:20 pm - 12:05 amBOI-SAT
8h 45m1 stop
Hawaiian Airlines Logo
6:32 am - 12:36 pmSAT-BOI
7h 04m1 stop
$308Hawaiian Airlines
Find Deal
vie., nov. 7 - lun., nov. 10
United Airlines Logo
7:15 am - 10:35 pmGEG-SAT
13h 20m2 stops
United Airlines Logo
2:14 pm - 8:45 pmSAT-GEG
8h 31m2 stops
$369United Airlines
Find Deal
jue., oct. 23 - sáb., nov. 1

Delta flights from Idaho to San Antonio

Our best Delta deals on Idaho to San Antonio flight tickets
Delta
Oct 25
BOI11:41 amBoise Air Term. Gowen Fld
11h 05m
2 stops
SAT11:46 pmSan Antonio
Nov 1
SAT12:40 pmSan Antonio
8h 36m
2 stops
BOI8:16 pmBoise Air Term. Gowen Fld
$268
Find similar
Delta
Oct 23
BOI1:39 pmBoise Air Term. Gowen Fld
8h 28m
1 stop
SAT11:07 pmSan Antonio
Oct 30
SAT4:51 pmSan Antonio
7h 01m
1 stop
BOI10:52 pmBoise Air Term. Gowen Fld
$291
Find similar
Delta
Oct 25
BOI11:41 amBoise Air Term. Gowen Fld
11h 05m
2 stops
SAT11:46 pmSan Antonio
Nov 1
SAT5:14 amSan Antonio
8h 15m
1 stop
BOI12:29 pmBoise Air Term. Gowen Fld
$294
Find similar

American Airlines flights from Idaho to San Antonio

Our best American Airlines deals on Idaho to San Antonio flight tickets
American Airlines
Oct 23
BOI2:07 pmBoise Air Term. Gowen Fld
8h 20m
1 stop
SAT11:27 pmSan Antonio
Oct 30
SAT6:55 pmSan Antonio
5h 37m
1 stop
BOI11:32 pmBoise Air Term. Gowen Fld
$319
Find similar
American Airlines
Oct 10
GEG3:10 pmSpokane
6h 17m
1 stop
SAT11:27 pmSan Antonio
Oct 15
SAT6:05 amSan Antonio
8h 15m
1 stop
GEG12:20 pmSpokane
$404
Find similar
American Airlines
Sep 28
BOI1:57 pmBoise Air Term. Gowen Fld
8h 49m
2 stops
SAT11:46 pmSan Antonio
Sep 30
SAT5:00 amSan Antonio
9h 17m
2 stops
BOI1:17 pmBoise Air Term. Gowen Fld
$911
Find similar

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 septiembre 25, 2025.
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

SpokaneSan Antonio

GEG - SAT

GEGSAT

Spokane

jue. 10/23

12:03 pm-7:41 pm

1 stop5h 38m

San Antonio

sáb. 11/1

3:12 pm-12:08 pm

1 stop22h 56m

$210

SpokaneSan Antonio

GEG - SAT

GEGSAT

Spokane

jue. 10/23

9:08 pm-1:19 pm

1 stop14h 11m

San Antonio

sáb. 11/1

3:12 pm-12:08 pm

1 stop22h 56m

$242

BoiseSan Antonio

BOI - SAT

BOISAT

Boise Air Term. Gowen Fld

sáb. 10/25

5:38 pm-12:05 am

1 stop29h 27m

San Antonio

sáb. 11/1

6:32 am-4:17 pm

1 stop10h 45m

$256

SpokaneSan Antonio

GEG - SAT

GEGSAT

Spokane

mié. 10/22

7:34 pm-12:04 am

1 stop26h 30m

San Antonio

vie. 10/24

7:56 pm-8:20 am

1 stop14h 24m

$256

BoiseSan Antonio

BOI - SAT

BOISAT

Boise Air Term. Gowen Fld

sáb. 10/25

11:41 am-11:46 pm

2 stops11h 05m

San Antonio

sáb. 11/1

12:40 pm-8:16 pm

2 stops8h 36m

$268

SpokaneSan Antonio

GEG - SAT

GEGSAT

Spokane

jue. 10/23

9:08 pm-4:37 pm

2 stops41h 29m

San Antonio

sáb. 11/1

3:12 pm-12:08 pm

1 stop22h 56m

$271

BoiseSan Antonio

BOI - SAT

BOISAT

Boise Air Term. Gowen Fld

jue. 10/23

1:39 pm-11:07 pm

1 stop8h 28m

San Antonio

jue. 10/30

4:51 pm-10:52 pm

1 stop7h 01m

$291

BoiseSan Antonio

BOI - SAT

BOISAT

Boise Air Term. Gowen Fld

sáb. 10/25

12:35 pm-10:35 pm

2 stops9h 00m

San Antonio

sáb. 11/1

4:30 pm-10:37 pm

1 stop7h 07m

$296

BoiseSan Antonio

BOI - SAT

BOISAT

Boise Air Term. Gowen Fld

vie. 11/7

2:20 pm-12:05 am

1 stop8h 45m

San Antonio

lun. 11/10

6:32 am-12:36 pm

1 stop7h 04m

$308

SpokaneSan Antonio

GEG - SAT

GEGSAT

Spokane

jue. 10/23

7:15 am-10:35 pm

2 stops13h 20m

San Antonio

sáb. 11/1

2:14 pm-8:45 pm

2 stops8h 31m

$369

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 $286.

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 $377 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 54% 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

Direct flights

None
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
Spirit AirlinesPriceFrom $110Free CancellationRating
6.3
8,042 reviews
Search Spirit Airlines flights
DeltaPriceFrom $230Free CancellationRating
7.9
7,973 reviews
Search Delta flights
SouthwestPriceFrom $248Free CancellationRating
8.0
4,244 reviews
Search Southwest flights
American AirlinesPriceFrom $261Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
United AirlinesPriceFrom $270Free CancellationRating
7.4
8,928 reviews
Search United 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
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.

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sáb. 10/25
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