What is the cheapest airline that flies from San Antonio to Idaho?

Frontier, Delta, and American Airlines are the most popular carriers operating from San Antonio to Idaho

What airlines fly to Idaho?

Delta, United Airlines and Southwest are the top three most popular airlines that fly to Idaho from San Antonio according to our data. Delta is the first choice among our users, with 40% of people opting to fly with this airline when traveling to Idaho. Keep in mind that there are 6 different airlines that fly to Idaho on a routine basis, so you have a few additional options to choose from.

When did momondo last update prices for flights from San Antonio Airport to Idaho?

Prices for flights from San Antonio Airport to Idaho are updated daily.

How many operators does momondo search for flights from San Antonio Airport to Idaho?

The number of operators available for flights from San Antonio Airport to Idaho is 5 as of December 2025.

How old do you have to be to fly from San Antonio Airport to Idaho?

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 San Antonio Airport to Idaho.

What documentation or ID do you need to fly to Idaho?

The necessary travel and health documents for your Idaho trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

$142 Cheap Flights from San Antonio to Idaho in 2025/26

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Find the cheapest flights from San Antonio to Idaho

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

7:35 am - 3:17 pm

SAT

JAC

8h 42m1 stop

3:57 pm - 11:30 pm

JAC

SAT

6h 33m1 stop

$257Delta

Fri, Mar 13 - Wed, Mar 18

5:20 am - 4:24 pm

SAT

JAC

12h 04m2 stops

3:52 pm - 11:43 pm

JAC

SAT

6h 51m1 stop

$262Delta

Thu, Jan 8 - Mon, Jan 12

5:47 am - 9:51 am

SAT

JAC

5h 04m1 stop

1:33 pm - 11:32 pm

JAC

SAT

8h 59m2 stops

$286United Airlines

Fri, Mar 13 - Wed, Mar 18

5:47 am - 9:51 am

SAT

JAC

5h 04m1 stop

1:33 pm - 11:32 pm

JAC

SAT

8h 59m2 stops

$289United Airlines

Fri, Mar 13 - Wed, Mar 18

7:35 am - 4:17 pm

SAT

BOI

9h 42m2 stops

9:15 am - 9:28 pm

BOI

SAT

11h 13m2 stops

$294Delta

Thu, Jan 29 - Sat, Feb 7

6:46 pm - 12:51 pm

SAT

BOI

19h 05m1 stop

5:55 pm - 5:45 pm

BOI

SAT

22h 50m1 stop

$304Alaska Airlines

Sun, Jan 11 - Sat, Jan 24

6:46 pm - 12:23 am

SAT

GEG

7h 37m1 stop

7:30 am - 5:45 pm

GEG

SAT

8h 15m1 stop

$304Alaska Airlines

Wed, Jan 14 - Wed, Jan 21

6:06 am - 12:21 pm

SAT

JAC

7h 15m1 stop

1:42 pm - 10:42 pm

JAC

SAT

8h 00m1 stop

$333American Airlines

Thu, Jan 8 - Mon, Jan 12

12:25 pm - 4:50 pm

SAT

BOI

5h 25m1 stop

3:55 pm - 9:45 pm

BOI

SAT

4h 50m1 stop

$344Southwest

Mon, Jan 12 - Thu, Jan 15

5:30 am - 3:50 pm

SAT

BOI

11h 20m2 stops

11:50 am - 7:45 pm

BOI

SAT

6h 55m2 stops

$379Southwest

Sun, Jan 11 - Sat, Jan 24

Frontier flights from San Antonio to Idaho

Our best Frontier deals on San Antonio to Idaho flight tickets

Frontier

Dec 20

SAT6:45 amSan Antonio

6h 14m

1 stop

BOI11:59 amBoise Air Term. Gowen Fld

Jan 1

BOI12:38 pmBoise Air Term. Gowen Fld

10h 39m

1 stop

SAT12:17 amSan Antonio

$388

Find similar

Frontier

Dec 31

SAT2:09 pmSan Antonio

27h 44m

2 stops

GEG3:53 pmSpokane

Jan 4

GEG12:02 pmSpokane

21h 19m

1 stop

SAT11:21 amSan Antonio

$440

Find similar

Frontier

Dec 20

SAT6:45 amSan Antonio

6h 14m

1 stop

BOI11:59 amBoise Air Term. Gowen Fld

Jan 1

BOI12:38 pmBoise Air Term. Gowen Fld

10h 39m

1 stop

SAT12:17 amSan Antonio

$633

Find similar

Delta flights from San Antonio to Idaho

Our best Delta deals on San Antonio to Idaho flight tickets

Delta

Jan 8

SAT5:20 amSan Antonio

12h 04m

2 stops

JAC4:24 pmJackson Hole

Jan 12

JAC3:52 pmJackson Hole

6h 51m

1 stop

SAT11:43 pmSan Antonio

$262

Find similar

Delta

Apr 18

SAT6:30 amSan Antonio

10h 58m

2 stops

JAC4:28 pmJackson Hole

Apr 21

JAC1:10 pmJackson Hole

9h 08m

2 stops

SAT11:18 pmSan Antonio

$267

Find similar

Delta

Jan 29

SAT7:35 amSan Antonio

9h 42m

2 stops

BOI4:17 pmBoise Air Term. Gowen Fld

Feb 7

BOI9:15 amBoise Air Term. Gowen Fld

11h 13m

2 stops

SAT9:28 pmSan Antonio

$294

Find similar

Fly from

Fly to

Route

Depart

Return

Price

San AntonioJackson

SAT - JAC

SATJAC

San Antonio

Fri 3/13

7:35 am-3:17 pm

1 stop8h 42m

Jackson Hole

Wed 3/18

3:57 pm-11:30 pm

1 stop6h 33m

$257

San AntonioJackson

SAT - JAC

SATJAC

San Antonio

Thu 1/8

5:20 am-4:24 pm

2 stops12h 04m

Jackson Hole

Mon 1/12

3:52 pm-11:43 pm

1 stop6h 51m

$262

San AntonioJackson

SAT - JAC

SATJAC

San Antonio

Fri 3/13

5:47 am-9:51 am

1 stop5h 04m

Jackson Hole

Wed 3/18

1:33 pm-11:32 pm

2 stops8h 59m

$286

San AntonioJackson

SAT - JAC

SATJAC

San Antonio

Fri 3/13

5:47 am-9:51 am

1 stop5h 04m

Jackson Hole

Wed 3/18

1:33 pm-11:32 pm

2 stops8h 59m

$289

San AntonioBoise

SAT - BOI

SATBOI

San Antonio

Thu 1/29

7:35 am-4:17 pm

2 stops9h 42m

Boise Air Term. Gowen Fld

Sat 2/7

9:15 am-9:28 pm

2 stops11h 13m

$294

San AntonioBoise

SAT - BOI

SATBOI

San Antonio

Sun 1/11

6:46 pm-12:51 pm

1 stop19h 05m

Boise Air Term. Gowen Fld

Sat 1/24

5:55 pm-5:45 pm

1 stop22h 50m

$304

San AntonioSpokane

SAT - GEG

SATGEG

San Antonio

Wed 1/14

6:46 pm-12:23 am

1 stop7h 37m

Spokane

Wed 1/21

7:30 am-5:45 pm

1 stop8h 15m

$304

San AntonioJackson

SAT - JAC

SATJAC

San Antonio

Thu 1/8

6:06 am-12:21 pm

1 stop7h 15m

Jackson Hole

Mon 1/12

1:42 pm-10:42 pm

1 stop8h 00m

$333

San AntonioBoise

SAT - BOI

SATBOI

San Antonio

Mon 1/12

12:25 pm-4:50 pm

1 stop5h 25m

Boise Air Term. Gowen Fld

Thu 1/15

3:55 pm-9:45 pm

1 stop4h 50m

$344

San AntonioBoise

SAT - BOI

SATBOI

San Antonio

Sun 1/11

5:30 am-3:50 pm

2 stops11h 20m

Boise Air Term. Gowen Fld

Sat 1/24

11:50 am-7:45 pm

2 stops6h 55m

$379

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from San Antonio to Idaho

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

Prices

Airlines

What is the cheapest month to fly to Idaho?

In general, August is the cheapest month to fly from San Antonio to Idaho. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $286. If you don’t want to visit Idaho in August, then you should wait until February to fly from San Antonio, when ticket prices are also cheap, with an average price of $292.

What is the cheapest day to depart on your flight to Idaho?

Our data shows that Wednesday is the least expensive day to fly to Idaho. Tickets to fly out on this day can be as low as $310. On the other hand, Sunday is the most expensive day to depart from San Antonio because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $505.

What is the cheapest time of day to depart on your flight to Idaho?

According to our data, the cheapest time of day to fly to Idaho is at noon. momondo users have found flights departing from San Antonio to Idaho at noon for as low as $369. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. In the afternoon is when there is more demand to fly to Idaho, so prices are often more expensive at around $466 per ticket.

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

You could potentially save up to 28% on your flight if you consider stops on a San Antonio to Idaho flight.

Cheap San Antonio to Idaho flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from San Antonio to Idaho

Fastest flight time	4h 57m
Direct flights	None

The fastest flight from San Antonio to Idaho takes 4h 57m

There are no direct flights from San Antonio to Idaho. There are no popular flight routes from San Antonio to Idaho.

Search flight deals

When did momondo last update prices for flights from San Antonio Airport to Idaho?
Prices for flights from San Antonio Airport to Idaho are updated daily.
How many operators does momondo search for flights from San Antonio Airport to Idaho?
The number of operators available for flights from San Antonio Airport to Idaho is 5 as of December 2025.
How old do you have to be to fly from San Antonio Airport to Idaho?
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 San Antonio Airport to Idaho.
What documentation or ID do you need to fly to Idaho?
The necessary travel and health documents for your Idaho trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

Best airlines flying from San Antonio to Idaho

Compare and see reviews for airlines that fly from San Antonio to Idaho with momondo

Airline	Rating	Free Cancellation	Price
Spirit Airlines	PriceFrom $79	Free Cancellation	Rating 6.3 8,190 reviews	Search Spirit Airlines flights
Delta	PriceFrom $194	Free Cancellation	Rating 7.9 8,005 reviews	Search Delta flights
American Airlines	PriceFrom $244	Free Cancellation	Rating 7.2 11,054 reviews	Search American Airlines flights
Southwest	PriceFrom $271	Free Cancellation	Rating 7.9 4,250 reviews	Search Southwest flights
United Airlines	PriceFrom $286	Free Cancellation	Rating 7.4 9,091 reviews	Search United Airlines flights

Why use momondo?

Why should I use momondo to find a flight deal from San Antonio to Idaho?

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from San Antonio to Idaho. Millions of users trust and use momondo every year so you are in good hands.

Can I find flights from San Antonio to Idaho with flexible booking policies on momondo?

momondo does allow users to show only those flights to Idaho from San Antonio which offer a flexible booking policy as well as other useful filters and features.

How can momondo help me find flights from San Antonio to Idaho?

momondo provides multiple filters to help you find the best flight to Idaho from San Antonio. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

I’m not ready to book a flight from San Antonio to Idaho right now. Can momondo alert me if prices change?

If you are not ready to book a flight from San Antonio to Idaho now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Idaho and let you know when they change.