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

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

What airlines fly to Idaho?

Delta, Southwest and United Airlines 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 36% of people opting to fly with this airline when traveling to Idaho. Keep in mind that there are 5 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 March 2026.

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.

$117 Cheap Flights from San Antonio to Idaho in 2026

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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.

6:45 am - 11:08 am

SAT

BOI

5h 23m

1 stop

11:53 am - 2:15 pm

BOI

SAT

25h 22m

1 stop

$221Frontier

Thu, Apr 9 - Thu, Apr 16

4:49 pm - 10:49 am

SAT

GEG

20h 00m

1 stop

5:00 am - 5:05 pm

GEG

SAT

10h 05m

1 stop

$275Multiple Airlines

Wed, Apr 29 - Tue, May 5

6:55 pm - 10:55 pm

SAT

GEG

6h 00m

1 stop

10:55 am - 9:40 pm

GEG

SAT

8h 45m

2 stops

$282Southwest

Wed, Apr 29 - Tue, May 5

7:15 am - 1:05 pm

SAT

GEG

7h 50m

2 stops

6:30 am - 5:00 pm

GEG

SAT

8h 30m

2 stops

$287Southwest

Wed, Apr 29 - Tue, May 5

6:35 am - 10:47 am

SAT

IDA

5h 12m

1 stop

6:00 am - 1:37 pm

IDA

SAT

6h 37m

1 stop

$329Delta

Tue, May 12 - Sun, May 17

7:30 am - 2:34 pm

SAT

IDA

8h 04m

2 stops

6:00 am - 1:37 pm

IDA

SAT

6h 37m

1 stop

$334Delta

Tue, May 12 - Sun, May 17

6:00 am - 12:40 pm

SAT

JAC

7h 40m

1 stop

1:25 pm - 9:41 pm

JAC

SAT

7h 16m

1 stop

$339American Airlines

Sat, Apr 18 - Tue, Apr 21

2:14 pm - 9:11 pm

SAT

GEG

8h 57m

2 stops

5:05 am - 5:43 pm

GEG

SAT

10h 38m

2 stops

$349United Airlines

Tue, Apr 21 - Wed, Apr 22

4:45 pm - 9:11 pm

SAT

GEG

6h 26m

1 stop

5:05 am - 1:00 pm

GEG

SAT

5h 55m

1 stop

$354United Airlines

Tue, Apr 14 - Wed, Apr 15

6:00 am - 12:38 pm

SAT

JAC

7h 38m

1 stop

3:06 pm - 10:19 pm

JAC

SAT

6h 13m

1 stop

$357American Airlines

Thu, Apr 2 - Sun, Apr 5

American Airlines flights from San Antonio to Idaho

Our best American Airlines deals on San Antonio to Idaho flight tickets

American Airlines

Apr 2

SAT6:00 amSan Antonio

7h 38m

1 stop

JAC12:38 pmJackson Hole

Apr 5

JAC3:06 pmJackson Hole

6h 13m

1 stop

SAT10:19 pmSan Antonio

$357

American Airlines

Apr 1

SAT8:05 amSan Antonio

7h 21m

1 stop

JAC2:26 pmJackson Hole

Apr 5

JAC3:06 pmJackson Hole

7h 01m

1 stop

SAT11:07 pmSan Antonio

$362

American Airlines

Aug 26

SAT9:10 amSan Antonio

5h 09m

1 stop

BOI1:19 pmBoise Air Term. Gowen Fld

Sep 2

BOI2:55 pmBoise Air Term. Gowen Fld

8h 04m

1 stop

SAT11:59 pmSan Antonio

$407

Southwest flights from San Antonio to Idaho

Our best Southwest deals on San Antonio to Idaho flight tickets

Southwest

Apr 29

SAT6:55 pmSan Antonio

6h 00m

1 stop

GEG10:55 pmSpokane

May 5

GEG10:55 amSpokane

8h 45m

2 stops

SAT9:40 pmSan Antonio

$282

Southwest

Apr 29

SAT7:15 amSan Antonio

7h 50m

2 stops

GEG1:05 pmSpokane

May 5

GEG6:30 amSpokane

8h 30m

2 stops

SAT5:00 pmSan Antonio

$287

Southwest

Apr 28

SAT7:15 pmSan Antonio

6h 10m

1 stop

BOI12:25 amBoise Air Term. Gowen Fld

May 2

BOI11:00 amBoise Air Term. Gowen Fld

5h 00m

1 stop

SAT5:00 pmSan Antonio

$317

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

San AntonioBoise

SAT - BOI

SATBOI

San Antonio

Thu 4/9

6:45 am-11:08 am

1 stop5h 23m

Boise Air Term. Gowen Fld

Thu 4/16

11:53 am-2:15 pm

1 stop25h 22m

$221

San AntonioSpokane

SAT - GEG

SATGEG

San Antonio

Wed 4/29

4:49 pm-10:49 am

1 stop20h 00m

Spokane

Tue 5/5

5:00 am-5:05 pm

1 stop10h 05m

$275

San AntonioSpokane

SAT - GEG

SATGEG

San Antonio

Wed 4/29

6:55 pm-10:55 pm

1 stop6h 00m

Spokane

Tue 5/5

10:55 am-9:40 pm

2 stops8h 45m

$282

San AntonioSpokane

SAT - GEG

SATGEG

San Antonio

Wed 4/29

7:15 am-1:05 pm

2 stops7h 50m

Spokane

Tue 5/5

6:30 am-5:00 pm

2 stops8h 30m

$287

Quickest round-trip

San AntonioIdaho Falls

SAT - IDA

SATIDA

San Antonio

Tue 5/12

6:35 am-10:47 am

1 stop5h 12m

Idaho Falls Fanning Field

Sun 5/17

6:00 am-1:37 pm

1 stop6h 37m

$329

San AntonioIdaho Falls

SAT - IDA

SATIDA

San Antonio

Tue 5/12

7:30 am-2:34 pm

2 stops8h 04m

Idaho Falls Fanning Field

Sun 5/17

6:00 am-1:37 pm

1 stop6h 37m

$334

San AntonioJackson

SAT - JAC

SATJAC

San Antonio

Sat 4/18

6:00 am-12:40 pm

1 stop7h 40m

Jackson Hole

Tue 4/21

1:25 pm-9:41 pm

1 stop7h 16m

$339

San AntonioSpokane

SAT - GEG

SATGEG

San Antonio

Tue 4/21

2:14 pm-9:11 pm

2 stops8h 57m

Spokane

Wed 4/22

5:05 am-5:43 pm

2 stops10h 38m

$349

San AntonioSpokane

SAT - GEG

SATGEG

San Antonio

Tue 4/14

4:45 pm-9:11 pm

1 stop6h 26m

Spokane

Wed 4/15

5:05 am-1:00 pm

1 stop5h 55m

$354

San AntonioJackson

SAT - JAC

SATJAC

San Antonio

Thu 4/2

6:00 am-12:38 pm

1 stop7h 38m

Jackson Hole

Sun 4/5

3:06 pm-10:19 pm

1 stop6h 13m

$357

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, September 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 $300. If you don’t want to visit Idaho in September, then you should wait until May to fly from San Antonio, when ticket prices are also cheap, with an average price of $306.

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

You could potentially save up to 30% 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 34m
Direct flights	None

The fastest flight from San Antonio to Idaho takes 4h 34m

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 March 2026.
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 $77	Free Cancellation	Rating 6.3 8,532 reviews	Search Spirit Airlines flights
Delta	PriceFrom $194	Free Cancellation	Rating 7.9 8,313 reviews	Search Delta flights
American Airlines	PriceFrom $244	Free Cancellation	Rating 7.1 11,488 reviews	Search American Airlines flights
Southwest	PriceFrom $262	Free Cancellation	Rating 8.0 4,325 reviews	Search Southwest flights
United Airlines	PriceFrom $286	Free Cancellation	Rating 7.4 9,451 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.