What airlines fly to Idaho?

Southwest, United Airlines and Delta are the top three most popular airlines that fly to Idaho from San Antonio according to our data. Southwest is the first choice among our users, with 32% 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.

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

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

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 3 as of November 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.

$145 Cheap Flights from San Antonio to Idaho in 2026/27

Discover deals from 900+ travel sites with momondo.

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.

1:34 pm - 4:48 pmSAT San Antonio-BOI Boise Air Term. Gowen Fld

28h 14m1 stop Las Vegas Harry Reid Intl

5:33 pm - 10:53 amBOI Boise Air Term. Gowen Fld-SAT San Antonio

16h 20m1 stop Las Vegas Harry Reid Intl

$314Frontier

Thu, Dec 24 - Mon, Dec 28

11:48 am - 4:48 pmSAT San Antonio-BOI Boise Air Term. Gowen Fld

6h 00m1 stop Las Vegas Harry Reid Intl

5:33 pm - 12:51 pmBOI Boise Air Term. Gowen Fld-SAT San Antonio

18h 18m1 stop Las Vegas Harry Reid Intl

$320Frontier

Wed, Dec 23 - Wed, Dec 30

10:29 pm - 1:54 pmSAT San Antonio-BOI Boise Air Term. Gowen Fld

16h 25m1 stop Las Vegas Harry Reid Intl

7:55 pm - 9:16 pmBOI Boise Air Term. Gowen Fld-SAT San Antonio

24h 21m1 stop Las Vegas Harry Reid Intl

$330Frontier

Wed, Nov 18 - Sun, Nov 22

12:51 pm - 5:53 pmSAT San Antonio-BOI Boise Air Term. Gowen Fld

6h 02m1 stop Salt Lake City

6:35 pm - 12:36 amBOI Boise Air Term. Gowen Fld-SAT San Antonio

5h 01m1 stop Salt Lake City

$363Delta

Wed, Dec 16 - Wed, Dec 23

6:08 pm - 10:07 pmSAT San Antonio-IDA Idaho Falls Fanning Field

4h 59m1 stop Salt Lake City

6:59 pm - 9:48 amIDA Idaho Falls Fanning Field-SAT San Antonio

13h 49m2 stops Salt Lake City Atlanta Hartsfield-Jackson

$364Delta

Thu, Dec 3 - Sun, Dec 6

6:08 pm - 10:07 pmSAT San Antonio-IDA Idaho Falls Fanning Field

4h 59m1 stop Salt Lake City

5:35 am - 2:55 pmIDA Idaho Falls Fanning Field-SAT San Antonio

8h 20m2 stops Salt Lake City Los Angeles

$364Delta

Thu, Dec 3 - Sun, Dec 6

8:25 pm - 1:10 amSAT San Antonio-BOI Boise Air Term. Gowen Fld

5h 45m1 stop Phoenix Sky Harbor Intl

6:10 pm - 11:55 pmBOI Boise Air Term. Gowen Fld-SAT San Antonio

4h 45m1 stop Phoenix Sky Harbor Intl

$401Southwest

Fri, Dec 18 - Sun, Dec 20

8:25 pm - 1:10 amSAT San Antonio-BOI Boise Air Term. Gowen Fld

5h 45m1 stop Phoenix Sky Harbor Intl

11:15 am - 1:55 amBOI Boise Air Term. Gowen Fld-SAT San Antonio

13h 40m2 stops Hollywood Burbank Las Vegas Harry Reid Intl

$417Southwest

Fri, Dec 18 - Sun, Dec 20

4:43 pm - 9:10 pmSAT San Antonio-IDA Idaho Falls Fanning Field

5h 27m1 stop Denver Intl

2:30 pm - 8:47 pmIDA Idaho Falls Fanning Field-SAT San Antonio

5h 17m1 stop Denver Intl

$469United Airlines

Sat, Jan 16 - Wed, Jan 20

8:59 am - 3:31 pmSAT San Antonio-IDA Idaho Falls Fanning Field

7h 32m1 stop Denver Intl

7:00 am - 12:58 pmIDA Idaho Falls Fanning Field-SAT San Antonio

4h 58m1 stop Denver Intl

$469United Airlines

Sat, Jan 23 - Tue, Jan 26

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Frontier flights from San Antonio to Idaho

Our best Frontier deals on San Antonio to Idaho flight tickets

Frontier

Dec 23

SAT11:48 amSan Antonio

6h 00m

1 stop

BOI4:48 pmBoise Air Term. Gowen Fld

Dec 30

BOI5:33 pmBoise Air Term. Gowen Fld

18h 18m

1 stop

SAT12:51 pmSan Antonio

$320

Frontier

Nov 18

SAT10:29 pmSan Antonio

16h 25m

1 stop

BOI1:54 pmBoise Air Term. Gowen Fld

Nov 22

BOI7:55 pmBoise Air Term. Gowen Fld

24h 21m

1 stop

SAT9:16 pmSan Antonio

$330

Frontier

Nov 20

SAT10:11 pmSan Antonio

21h 49m

1 stop

BOI7:00 pmBoise Air Term. Gowen Fld

Nov 24

BOI7:55 pmBoise Air Term. Gowen Fld

24h 21m

1 stop

SAT9:16 pmSan Antonio

$340

Delta flights from San Antonio to Idaho

Our best Delta deals on San Antonio to Idaho flight tickets

Delta

Dec 3

SAT6:08 pmSan Antonio

4h 59m

1 stop

IDA10:07 pmIdaho Falls Fanning Field

Dec 6

IDA6:59 pmIdaho Falls Fanning Field

13h 49m

2 stops

SAT9:48 amSan Antonio

$364

Delta

Nov 24

SAT7:01 amSan Antonio

8h 57m

1 stop

BOI2:58 pmBoise Air Term. Gowen Fld

Dec 3

BOI4:44 pmBoise Air Term. Gowen Fld

6h 21m

1 stop

SAT12:05 amSan Antonio

$369

Delta

Mar 23

SAT2:00 pmSan Antonio

9h 19m

2 stops

IDA10:19 pmIdaho Falls Fanning Field

Apr 2

IDA6:45 pmIdaho Falls Fanning Field

5h 00m

1 stop

SAT12:45 amSan Antonio

$374

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

San AntonioBoise

SAT San Antonio - BOI Boise Air Term. Gowen Fld

SATBOI

San Antonio

Thu 12/24

1:34 pm-4:48 pm

1 stop28h 14m

Boise Air Term. Gowen Fld

Mon 12/28

5:33 pm-10:53 am

1 stop16h 20m

$314

San AntonioBoise

SAT San Antonio - BOI Boise Air Term. Gowen Fld

SATBOI

San Antonio

Wed 12/23

11:48 am-4:48 pm

1 stop6h 00m

Boise Air Term. Gowen Fld

Wed 12/30

5:33 pm-12:51 pm

1 stop18h 18m

$320

San AntonioBoise

SAT San Antonio - BOI Boise Air Term. Gowen Fld

SATBOI

San Antonio

Wed 11/18

10:29 pm-1:54 pm

1 stop16h 25m

Boise Air Term. Gowen Fld

Sun 11/22

7:55 pm-9:16 pm

1 stop24h 21m

$330

San AntonioBoise

SAT San Antonio - BOI Boise Air Term. Gowen Fld

SATBOI

San Antonio

Wed 12/16

12:51 pm-5:53 pm

1 stop6h 02m

Boise Air Term. Gowen Fld

Wed 12/23

6:35 pm-12:36 am

1 stop5h 01m

$363

San AntonioIdaho Falls

SAT San Antonio - IDA Idaho Falls Fanning Field

SATIDA

San Antonio

Thu 12/3

6:08 pm-10:07 pm

1 stop4h 59m

Idaho Falls Fanning Field

Sun 12/6

6:59 pm-9:48 am

2 stops13h 49m

$364

San AntonioIdaho Falls

SAT San Antonio - IDA Idaho Falls Fanning Field

SATIDA

San Antonio

Thu 12/3

6:08 pm-10:07 pm

1 stop4h 59m

Idaho Falls Fanning Field

Sun 12/6

5:35 am-2:55 pm

2 stops8h 20m

$364

Quickest round-trip

San AntonioBoise

SAT San Antonio - BOI Boise Air Term. Gowen Fld

SATBOI

San Antonio

Fri 12/18

8:25 pm-1:10 am

1 stop5h 45m

Boise Air Term. Gowen Fld

Sun 12/20

6:10 pm-11:55 pm

1 stop4h 45m

$401

San AntonioBoise

SAT San Antonio - BOI Boise Air Term. Gowen Fld

SATBOI

San Antonio

Fri 12/18

8:25 pm-1:10 am

1 stop5h 45m

Boise Air Term. Gowen Fld

Sun 12/20

11:15 am-1:55 am

2 stops13h 40m

$417

San AntonioIdaho Falls

SAT San Antonio - IDA Idaho Falls Fanning Field

SATIDA

San Antonio

Sat 1/16

4:43 pm-9:10 pm

1 stop5h 27m

Idaho Falls Fanning Field

Wed 1/20

2:30 pm-8:47 pm

1 stop5h 17m

$469

San AntonioIdaho Falls

SAT San Antonio - IDA Idaho Falls Fanning Field

SATIDA

San Antonio

Sat 1/23

8:59 am-3:31 pm

1 stop7h 32m

Idaho Falls Fanning Field

Tue 1/26

7:00 am-12:58 pm

1 stop4h 58m

$469

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, January 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 $342. If you don’t want to visit Idaho in January, then you should wait until February to fly from San Antonio, when ticket prices are also cheap, with an average price of $376.

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

You could potentially save up to 57% 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

Best Price Found	$145
Fastest flight time	4h 59m
Direct flights	None

The best one-way flight to Idaho from San Antonio in the past 72 hours is $145. The best round-trip flight deal from San Antonio to Idaho found on momondo in the last 72 hours is $314.

The fastest flight from San Antonio to Idaho takes 4h 59m

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

Search flight deals

Frequently asked questions about flying from San Antonio to Idaho

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 3 as of November 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
Southwest	PriceFrom $243	Free Cancellation	Rating 8.0 4,212 reviews	Search Southwest flights
United Airlines	PriceFrom $298	Free Cancellation	Rating 7.3 10,471 reviews	Search United Airlines flights
Delta	PriceFrom $326	Free Cancellation	Rating 7.8 8,701 reviews	Search Delta 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.