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 34% 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?

Frontier, Alaska Airlines, and Southwest 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 5 as of May 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.

$129 Cheap Flights from San Antonio to Idaho in 2026

1 adult

0 bags

Discover deals from 900+ travel sites with momondo.

Save money when you book flights with momondo

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Not ready to book? to track prices.

Search flight deals

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.

7:54 pm - 12:38 pm

SAT

BOI

17h 44m

1 stop

1:25 pm - 6:56 pm

BOI

SAT

28h 31m

1 stop

$219Frontier

Wed, Jun 3 - Tue, Jun 9

7:54 pm - 11:38 am

SAT

GEG

17h 44m

1 stop

12:31 pm - 6:56 pm

GEG

SAT

28h 25m

1 stop

$220Frontier

Sun, Jun 7 - Wed, Jun 10

5:12 pm - 11:59 pm

SAT

GEG

8h 47m

1 stop

7:00 am - 4:16 pm

GEG

SAT

7h 16m

1 stop

$357Alaska Airlines

Tue, Sep 22 - Wed, Sep 23

5:30 am - 9:46 am

SAT

JAC

5h 16m

1 stop

4:23 pm - 11:55 pm

JAC

SAT

6h 32m

1 stop

$359United Airlines

Fri, May 29 - Fri, Jun 5

5:30 am - 9:50 am

SAT

IDA

5h 20m

1 stop

5:54 pm - 11:55 pm

IDA

SAT

5h 01m

1 stop

$364United Airlines

Sat, Jun 6 - Mon, Jun 8

7:30 am - 4:57 pm

SAT

GEG

11h 27m

2 stops

9:20 am - 11:52 pm

GEG

SAT

12h 32m

2 stops

$371Delta

Thu, Jun 4 - Mon, Jun 8

12:15 pm - 8:23 pm

SAT

JAC

9h 08m

1 stop

5:30 pm - 12:44 am

JAC

SAT

6h 14m

1 stop

$375Delta

Sun, Sep 13 - Sat, Sep 19

7:15 am - 1:45 pm

SAT

GEG

8h 30m

1 stop

9:45 am - 7:25 pm

GEG

SAT

7h 40m

1 stop

$375Southwest

Tue, Jun 2 - Sat, Jun 6

6:20 pm - 10:00 pm

SAT

GEG

5h 40m

1 stop

12:35 pm - 10:55 pm

GEG

SAT

8h 20m

2 stops

$380Southwest

Sat, Jun 6 - Tue, Jun 9

11:03 am - 10:56 pm

SAT

IDA

12h 53m

2 stops

6:18 am - 4:16 pm

IDA

SAT

8h 58m

1 stop

$434Alaska Airlines

Sat, Sep 19 - Sat, Sep 26

Frontier flights from San Antonio to Idaho

Our best Frontier deals on San Antonio to Idaho flight tickets

Frontier

Jun 3

SAT7:54 pmSan Antonio

17h 44m

1 stop

BOI12:38 pmBoise Air Term. Gowen Fld

Jun 9

BOI1:25 pmBoise Air Term. Gowen Fld

28h 31m

1 stop

SAT6:56 pmSan Antonio

$219

Frontier

Jun 7

SAT7:54 pmSan Antonio

17h 44m

1 stop

GEG11:38 amSpokane

Jun 10

GEG12:31 pmSpokane

28h 25m

1 stop

SAT6:56 pmSan Antonio

$220

Frontier

Jun 6

SAT7:54 pmSan Antonio

17h 44m

1 stop

BOI12:38 pmBoise Air Term. Gowen Fld

Jun 9

BOI1:25 pmBoise Air Term. Gowen Fld

28h 31m

1 stop

SAT6:56 pmSan Antonio

$233

American Airlines flights from San Antonio to Idaho

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

American Airlines

Aug 26

SAT3:41 pmSan Antonio

7h 59m

1 stop

BOI10:40 pmBoise Air Term. Gowen Fld

Sep 2

BOI1:54 pmBoise Air Term. Gowen Fld

7h 56m

2 stops

SAT10:50 pmSan Antonio

$388

American Airlines

Aug 26

SAT5:00 amSan Antonio

9h 24m

2 stops

BOI1:24 pmBoise Air Term. Gowen Fld

Sep 2

BOI1:54 pmBoise Air Term. Gowen Fld

7h 56m

2 stops

SAT10:50 pmSan Antonio

$393

American Airlines

Aug 26

SAT5:00 amSan Antonio

7h 27m

1 stop

BOI11:27 amBoise Air Term. Gowen Fld

Sep 2

BOI1:54 pmBoise Air Term. Gowen Fld

7h 56m

2 stops

SAT10:50 pmSan Antonio

$408

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

San AntonioBoise

SAT - BOI

SATBOI

San Antonio

Wed 6/3

7:54 pm-12:38 pm

1 stop17h 44m

Boise Air Term. Gowen Fld

Tue 6/9

1:25 pm-6:56 pm

1 stop28h 31m

$219

San AntonioSpokane

SAT - GEG

SATGEG

San Antonio

Sun 6/7

7:54 pm-11:38 am

1 stop17h 44m

Spokane

Wed 6/10

12:31 pm-6:56 pm

1 stop28h 25m

$220

San AntonioSpokane

SAT - GEG

SATGEG

San Antonio

Tue 9/22

5:12 pm-11:59 pm

1 stop8h 47m

Spokane

Wed 9/23

7:00 am-4:16 pm

1 stop7h 16m

$357

San AntonioJackson

SAT - JAC

SATJAC

San Antonio

Fri 5/29

5:30 am-9:46 am

1 stop5h 16m

Jackson Hole

Fri 6/5

4:23 pm-11:55 pm

1 stop6h 32m

$359

Quickest round-trip

San AntonioIdaho Falls

SAT - IDA

SATIDA

San Antonio

Sat 6/6

5:30 am-9:50 am

1 stop5h 20m

Idaho Falls Fanning Field

Mon 6/8

5:54 pm-11:55 pm

1 stop5h 01m

$364

San AntonioSpokane

SAT - GEG

SATGEG

San Antonio

Thu 6/4

7:30 am-4:57 pm

2 stops11h 27m

Spokane

Mon 6/8

9:20 am-11:52 pm

2 stops12h 32m

$371

San AntonioJackson

SAT - JAC

SATJAC

San Antonio

Sun 9/13

12:15 pm-8:23 pm

1 stop9h 08m

Jackson Hole

Sat 9/19

5:30 pm-12:44 am

1 stop6h 14m

$375

San AntonioSpokane

SAT - GEG

SATGEG

San Antonio

Tue 6/2

7:15 am-1:45 pm

1 stop8h 30m

Spokane

Sat 6/6

9:45 am-7:25 pm

1 stop7h 40m

$375

San AntonioSpokane

SAT - GEG

SATGEG

San Antonio

Sat 6/6

6:20 pm-10:00 pm

1 stop5h 40m

Spokane

Tue 6/9

12:35 pm-10:55 pm

2 stops8h 20m

$380

San AntonioIdaho Falls

SAT - IDA

SATIDA

San Antonio

Sat 9/19

11:03 am-10:56 pm

2 stops12h 53m

Idaho Falls Fanning Field

Sat 9/26

6:18 am-4:16 pm

1 stop8h 58m

$434

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 $77. If you don’t want to visit Idaho in September, then you should wait until August to fly from San Antonio, when ticket prices are also cheap, with an average price of $79.

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

You could potentially save up to 15% 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	5h 03m
Direct flights	None

The fastest flight from San Antonio to Idaho takes 5h 03m

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 5 as of May 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
Delta	PriceFrom $194	Free Cancellation	Rating 7.9 8,459 reviews	Search Delta flights
American Airlines	PriceFrom $244	Free Cancellation	Rating 7.1 11,669 reviews	Search American Airlines flights
Southwest	PriceFrom $271	Free Cancellation	Rating 7.9 4,301 reviews	Search Southwest flights
United Airlines	PriceFrom $286	Free Cancellation	Rating 7.4 9,690 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.