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Cheap flights from Idaho to San Antonio from $69

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 12/12. 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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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
12:20 pm - 12:20 amGEG-SAT
10h 00m1 stop
Frontier Logo
7:00 am - 11:25 amSAT-GEG
6h 25m1 stop
$144Frontier
Find Deal
Fri, Nov 21 - Fri, Nov 28
Multiple Airlines Logo
12:54 pm - 9:18 amBOI-SAT
19h 24m1 stop
Multiple Airlines Logo
3:03 pm - 9:20 amSAT-BOI
19h 17m1 stop
$185Multiple Airlines
Find Deal
Thu, Jan 29 - Sun, Feb 1
United Airlines Logo
5:00 am - 1:09 pmGEG-SAT
6h 09m1 stop
United Airlines Logo
4:43 pm - 9:22 pmSAT-GEG
6h 39m1 stop
$271United Airlines
Find Deal
Sat, Jan 17 - Tue, Jan 20
Delta Logo
9:25 am - 11:49 pmGEG-SAT
12h 24m2 stops
Delta Logo
2:40 pm - 12:11 amSAT-GEG
11h 31m2 stops
$274Delta
Find Deal
Fri, Dec 12 - Mon, Dec 15
United Airlines Logo
6:53 am - 9:21 pmGEG-SAT
12h 28m2 stops
United Airlines Logo
2:15 pm - 9:22 pmSAT-GEG
9h 07m2 stops
$281United Airlines
Find Deal
Sat, Jan 17 - Tue, Jan 20
American Airlines Logo
6:13 am - 4:56 pmBOI-SAT
9h 43m1 stop
American Airlines Logo
6:01 am - 2:51 pmSAT-BOI
9h 50m1 stop
$289American Airlines
Find Deal
Sat, Jan 17 - Sat, Jan 24
Delta Logo
10:37 am - 9:28 pmBOI-SAT
9h 51m2 stops
Delta Logo
7:35 am - 6:28 pmSAT-BOI
11h 53m2 stops
$294Delta
Find Deal
Sat, Jan 17 - Sat, Jan 24
American Airlines Logo
6:35 am - 4:40 pmGEG-SAT
8h 05m1 stop
American Airlines Logo
11:28 am - 4:40 pmSAT-GEG
7h 12m1 stop
$312American Airlines
Find Deal
Sat, Dec 13 - Tue, Dec 16
Alaska Airlines Logo
9:05 am - 5:45 pmGEG-SAT
6h 40m1 stop
Alaska Airlines Logo
6:46 pm - 12:23 amSAT-GEG
7h 37m1 stop
$322Alaska Airlines
Find Deal
Sat, Jan 17 - Mon, Jan 19
Alaska Airlines Logo
7:05 am - 5:10 pmGEG-SAT
8h 05m1 stop
Alaska Airlines Logo
6:06 pm - 11:01 pmSAT-GEG
6h 55m1 stop
$353Alaska Airlines
Find Deal
Tue, Mar 10 - Wed, Mar 11

Delta flights from Idaho to San Antonio

Our best Delta deals on Idaho to San Antonio flight tickets
Delta
Dec 12
GEG9:25 amSpokane
12h 24m
2 stops
SAT11:49 pmSan Antonio
Dec 15
SAT2:40 pmSan Antonio
11h 31m
2 stops
GEG12:11 amSpokane
$274
Find similar
Delta
Jan 17
BOI10:37 amBoise Air Term. Gowen Fld
9h 51m
2 stops
SAT9:28 pmSan Antonio
Jan 24
SAT7:35 amSan Antonio
11h 53m
2 stops
BOI6:28 pmBoise Air Term. Gowen Fld
$294
Find similar
Delta
Jan 17
GEG11:22 amSpokane
8h 06m
2 stops
SAT9:28 pmSan Antonio
Jan 20
SAT7:35 amSan Antonio
6h 32m
1 stop
GEG12:07 pmSpokane
$302
Find similar

United Airlines flights from Idaho to San Antonio

Our best United Airlines deals on Idaho to San Antonio flight tickets
United Airlines
Jan 17
GEG5:00 amSpokane
6h 09m
1 stop
SAT1:09 pmSan Antonio
Jan 20
SAT4:43 pmSan Antonio
6h 39m
1 stop
GEG9:22 pmSpokane
$271
Find similar
United Airlines
Jan 17
GEG6:53 amSpokane
12h 28m
2 stops
SAT9:21 pmSan Antonio
Jan 20
SAT2:15 pmSan Antonio
9h 07m
2 stops
GEG9:22 pmSpokane
$281
Find similar
United Airlines
Jan 17
GEG5:00 amSpokane
12h 41m
2 stops
SAT7:41 pmSan Antonio
Jan 20
SAT11:43 amSan Antonio
11h 39m
2 stops
GEG9:22 pmSpokane
$400
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 November 10, 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

Fri 11/21

12:20 pm-12:20 am

1 stop10h 00m

San Antonio

Fri 11/28

7:00 am-11:25 am

1 stop6h 25m

$144

BoiseSan Antonio

BOI - SAT

BOISAT

Boise Air Term. Gowen Fld

Thu 1/29

12:54 pm-9:18 am

1 stop19h 24m

San Antonio

Sun 2/1

3:03 pm-9:20 am

1 stop19h 17m

$185

SpokaneSan Antonio

GEG - SAT

GEGSAT

Spokane

Sat 1/17

5:00 am-1:09 pm

1 stop6h 09m

San Antonio

Tue 1/20

4:43 pm-9:22 pm

1 stop6h 39m

$271

SpokaneSan Antonio

GEG - SAT

GEGSAT

Spokane

Fri 12/12

9:25 am-11:49 pm

2 stops12h 24m

San Antonio

Mon 12/15

2:40 pm-12:11 am

2 stops11h 31m

$274

SpokaneSan Antonio

GEG - SAT

GEGSAT

Spokane

Sat 1/17

6:53 am-9:21 pm

2 stops12h 28m

San Antonio

Tue 1/20

2:15 pm-9:22 pm

2 stops9h 07m

$281

BoiseSan Antonio

BOI - SAT

BOISAT

Boise Air Term. Gowen Fld

Sat 1/17

6:13 am-4:56 pm

1 stop9h 43m

San Antonio

Sat 1/24

6:01 am-2:51 pm

1 stop9h 50m

$289

BoiseSan Antonio

BOI - SAT

BOISAT

Boise Air Term. Gowen Fld

Sat 1/17

10:37 am-9:28 pm

2 stops9h 51m

San Antonio

Sat 1/24

7:35 am-6:28 pm

2 stops11h 53m

$294

SpokaneSan Antonio

GEG - SAT

GEGSAT

Spokane

Sat 12/13

6:35 am-4:40 pm

1 stop8h 05m

San Antonio

Tue 12/16

11:28 am-4:40 pm

1 stop7h 12m

$312

SpokaneSan Antonio

GEG - SAT

GEGSAT

Spokane

Sat 1/17

9:05 am-5:45 pm

1 stop6h 40m

San Antonio

Mon 1/19

6:46 pm-12:23 am

1 stop7h 37m

$322

SpokaneSan Antonio

GEG - SAT

GEGSAT

Spokane

Tue 3/10

7:05 am-5:10 pm

1 stop8h 05m

San Antonio

Wed 3/11

6:06 pm-11:01 pm

1 stop6h 55m

$353

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.

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 $391 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 68% 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
United AirlinesPriceFrom $226Free CancellationRating
7.4
9,012 reviews
Search United Airlines flights
DeltaPriceFrom $230Free CancellationRating
7.9
8,007 reviews
Search Delta flights
SouthwestPriceFrom $248Free CancellationRating
8.0
4,235 reviews
Search Southwest flights
American AirlinesPriceFrom $261Free CancellationRating
7.2
11,045 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
Boerne
Kerrville
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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