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Cheap flights from Idaho to San Antonio from $136

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 8/3. 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
12:28 pm - 6:56 pm
GEG
-
SAT
28h 28m
1 stop
Frontier Logo
7:51 pm - 11:33 am
SAT
-
GEG
17h 42m
1 stop
$276Frontier
Wed, Aug 26 - Tue, Sep 1
Frontier Logo
12:28 pm - 6:56 pm
GEG
-
SAT
28h 28m
1 stop
Frontier Logo
8:56 pm - 11:33 am
SAT
-
GEG
16h 37m
2 stops
$327Frontier
Wed, Aug 26 - Tue, Sep 1
Delta Logo
7:00 pm - 12:26 am
IDA
-
SAT
4h 26m
1 stop
Delta Logo
6:03 pm - 10:32 pm
SAT
-
IDA
5h 29m
1 stop
$329Delta
Thu, Jul 9 - Thu, Jul 16
Delta Logo
6:00 am - 2:53 pm
IDA
-
SAT
7h 53m
2 stops
Delta Logo
6:03 pm - 10:32 pm
SAT
-
IDA
5h 29m
1 stop
$334Delta
Thu, Jul 9 - Thu, Jul 16
United Airlines Logo
1:42 pm - 8:54 pm
JAC
-
SAT
6h 12m
1 stop
United Airlines Logo
5:30 am - 9:46 am
SAT
-
JAC
5h 16m
1 stop
$359United Airlines
Mon, Jun 1 - Sun, Jun 7
Alaska Airlines Logo
7:23 am - 3:46 pm
GEG
-
SAT
6h 23m
1 stop
Alaska Airlines Logo
4:44 pm - 11:59 pm
SAT
-
GEG
9h 15m
1 stop
$365Alaska Airlines
Wed, Aug 5 - Wed, Aug 12
American Airlines Logo
5:44 am - 2:56 pm
GEG
-
SAT
7h 12m
1 stop
American Airlines Logo
7:04 pm - 11:09 pm
SAT
-
GEG
6h 05m
1 stop
$367American Airlines
Wed, May 27 - Thu, May 28
Alaska Airlines Logo
5:45 am - 4:16 pm
GEG
-
SAT
8h 31m
1 stop
Alaska Airlines Logo
5:12 pm - 10:25 pm
SAT
-
GEG
7h 13m
1 stop
$377Alaska Airlines
Thu, Sep 24 - Mon, Sep 28
American Airlines Logo
6:30 am - 5:40 pm
GEG
-
SAT
9h 10m
2 stops
American Airlines Logo
7:04 pm - 11:09 pm
SAT
-
GEG
6h 05m
1 stop
$386American Airlines
Wed, May 27 - Thu, May 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
$398United Airlines
Wed, May 27 - Wed, Jun 10

Frontier flights from Idaho to San Antonio

Our best Frontier deals on Idaho to San Antonio flight tickets
Frontier
Aug 26
GEG12:28 pmSpokane
28h 28m
1 stop
SAT6:56 pmSan Antonio
Sep 1
SAT7:51 pmSan Antonio
17h 42m
1 stop
GEG11:33 amSpokane
$276
Frontier
May 15
GEG12:33 pmSpokane
28h 26m
1 stop
SAT6:59 pmSan Antonio
May 24
SAT7:54 pmSan Antonio
17h 44m
1 stop
GEG11:38 amSpokane
$310
Frontier
Aug 26
GEG12:28 pmSpokane
28h 28m
1 stop
SAT6:56 pmSan Antonio
Sep 1
SAT8:56 pmSan Antonio
16h 37m
2 stops
GEG11:33 amSpokane
$327

Alaska Airlines flights from Idaho to San Antonio

Our best Alaska Airlines deals on Idaho to San Antonio flight tickets
Alaska Airlines
Aug 5
GEG7:23 amSpokane
6h 23m
1 stop
SAT3:46 pmSan Antonio
Aug 12
SAT4:44 pmSan Antonio
9h 15m
1 stop
GEG11:59 pmSpokane
$365
Alaska Airlines
Sep 24
GEG5:45 amSpokane
8h 31m
1 stop
SAT4:16 pmSan Antonio
Sep 28
SAT5:12 pmSan Antonio
7h 13m
1 stop
GEG10:25 pmSpokane
$377
Alaska Airlines
Jun 5
IDA1:54 pmIdaho Falls Fanning Field
14h 46m
1 stop
SAT5:40 amSan Antonio
Jun 9
SAT7:00 amSan Antonio
9h 26m
1 stop
IDA3:26 pmIdaho Falls Fanning Field
$419

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 May 7, 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

SpokaneSan Antonio

GEG - SAT

GEGSAT

Spokane

Wed 8/26

12:28 pm-6:56 pm

1 stop28h 28m

San Antonio

Tue 9/1

7:51 pm-11:33 am

1 stop17h 42m

$276

SpokaneSan Antonio

GEG - SAT

GEGSAT

Spokane

Wed 8/26

12:28 pm-6:56 pm

1 stop28h 28m

San Antonio

Tue 9/1

8:56 pm-11:33 am

2 stops16h 37m

$327
Quickest round-trip

Idaho FallsSan Antonio

IDA - SAT

IDASAT

Idaho Falls Fanning Field

Thu 7/9

7:00 pm-12:26 am

1 stop4h 26m

San Antonio

Thu 7/16

6:03 pm-10:32 pm

1 stop5h 29m

$329

Idaho FallsSan Antonio

IDA - SAT

IDASAT

Idaho Falls Fanning Field

Thu 7/9

6:00 am-2:53 pm

2 stops7h 53m

San Antonio

Thu 7/16

6:03 pm-10:32 pm

1 stop5h 29m

$334

JacksonSan Antonio

JAC - SAT

JACSAT

Jackson Hole

Mon 6/1

1:42 pm-8:54 pm

1 stop6h 12m

San Antonio

Sun 6/7

5:30 am-9:46 am

1 stop5h 16m

$359

SpokaneSan Antonio

GEG - SAT

GEGSAT

Spokane

Wed 8/5

7:23 am-3:46 pm

1 stop6h 23m

San Antonio

Wed 8/12

4:44 pm-11:59 pm

1 stop9h 15m

$365

SpokaneSan Antonio

GEG - SAT

GEGSAT

Spokane

Wed 5/27

5:44 am-2:56 pm

1 stop7h 12m

San Antonio

Thu 5/28

7:04 pm-11:09 pm

1 stop6h 05m

$367

SpokaneSan Antonio

GEG - SAT

GEGSAT

Spokane

Thu 9/24

5:45 am-4:16 pm

1 stop8h 31m

San Antonio

Mon 9/28

5:12 pm-10:25 pm

1 stop7h 13m

$377

SpokaneSan Antonio

GEG - SAT

GEGSAT

Spokane

Wed 5/27

6:30 am-5:40 pm

2 stops9h 10m

San Antonio

Thu 5/28

7:04 pm-11:09 pm

1 stop6h 05m

$386

BoiseSan Antonio

BOI - SAT

BOISAT

Boise Air Term. Gowen Fld

Wed 5/27

5:46 pm-11:59 pm

1 stop5h 13m

San Antonio

Wed 6/10

5:30 am-9:45 am

1 stop5h 15m

$398

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 September, then book flights to San Antonio from Idaho during February instead. Flights to San Antonio in February, while not as cheap as those in September, still average around $114.

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 $400 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 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 $131Free CancellationRating
7.9
8,459 reviews
Search Delta flights
United AirlinesPriceFrom $208Free CancellationRating
7.4
9,690 reviews
Search United Airlines flights
American AirlinesPriceFrom $259Free CancellationRating
7.1
11,669 reviews
Search American Airlines flights
SouthwestPriceFrom $290Free CancellationRating
7.9
4,301 reviews
Search Southwest flights
Alaska AirlinesPriceFrom $303Free CancellationRating
7.9
12,336 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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