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 33% 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, United Airlines, and Delta 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 4 as of August 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.

$136 Cheap Flights from San Antonio to Idaho in 2026

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.

3:19 pm - 1:55 pm-

23h 36m

2:50 pm - 2:20 pm-

22h 30m

$227Frontier

Wed, Sep 16 - Mon, Sep 21

3:19 pm - 1:55 pm-

23h 36m

2:50 pm - 2:20 pm-

22h 30m

$228Frontier

Wed, Sep 16 - Mon, Sep 21

5:50 am - 12:05 pm-

8h 15m

2:15 pm - 10:55 pm-

6h 40m

$335Southwest

Sat, Aug 29 - Sat, Sep 5

5:30 am - 9:53 am-

5h 23m

4:04 pm - 11:57 pm-

6h 53m

$339United Airlines

Sat, Sep 12 - Tue, Sep 15

9:10 am - 12:35 pm-

5h 25m

6:00 am - 9:16 pm-

13h 16m

$340United Airlines

Sat, Aug 29 - Sat, Sep 5

6:20 am - 12:05 pm-

7h 45m

1:40 pm - 9:45 pm-

6h 05m

$340Southwest

Sat, Aug 29 - Sat, Sep 5

4:50 pm - 11:48 pm-

8h 58m

6:45 am - 5:10 pm-

8h 25m

$347Delta

Thu, Sep 24 - Wed, Sep 30

6:07 pm - 10:54 pm-

6h 47m

5:14 pm - 12:31 am-

5h 17m

$347Delta

Wed, Sep 23 - Mon, Sep 28

6:00 am - 11:55 am-

7h 55m

12:45 pm - 9:06 pm-

6h 21m

$347American Airlines

Wed, Sep 23 - Tue, Sep 29

8:00 am - 11:54 am-

5h 54m

6:30 am - 4:36 pm-

8h 06m

$347American Airlines

Tue, Sep 8 - Tue, Sep 15

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Alaska Airlines flights from San Antonio to Idaho

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

Alaska Airlines

Nov 10

SAT5:21 pmSan Antonio

7h 21m

1 stop

IDA11:42 pmIdaho Falls Fanning Field

Nov 14

IDA6:04 amIdaho Falls Fanning Field

9h 21m

1 stop

SAT4:25 pmSan Antonio

$399

Alaska Airlines

Sep 14

SAT5:29 pmSan Antonio

7h 15m

1 stop

BOI11:44 pmBoise Air Term. Gowen Fld

Sep 21

BOI8:03 amBoise Air Term. Gowen Fld

7h 16m

1 stop

SAT4:19 pmSan Antonio

$418

Alaska Airlines

Sep 4

SAT5:23 pmSan Antonio

7h 21m

1 stop

BOI11:44 pmBoise Air Term. Gowen Fld

Sep 6

BOI6:23 amBoise Air Term. Gowen Fld

8h 50m

1 stop

SAT4:13 pmSan Antonio

$430

United Airlines flights from San Antonio to Idaho

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

United Airlines

Sep 12

SAT5:30 amSan Antonio

5h 23m

1 stop

IDA9:53 amIdaho Falls Fanning Field

Sep 15

IDA4:04 pmIdaho Falls Fanning Field

6h 53m

1 stop

SAT11:57 pmSan Antonio

$339

United Airlines

Aug 29

SAT9:10 amSan Antonio

5h 25m

1 stop

GEG12:35 pmSpokane

Sep 5

GEG6:00 amSpokane

13h 16m

2 stops

SAT9:16 pmSan Antonio

$340

United Airlines

Sep 12

SAT7:35 amSan Antonio

8h 48m

2 stops

IDA3:23 pmIdaho Falls Fanning Field

Sep 15

IDA4:04 pmIdaho Falls Fanning Field

6h 53m

1 stop

SAT11:57 pmSan Antonio

$344

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

San AntonioBoise

SAT - BOI

SATBOI

San Antonio

Wed 9/16

3:19 pm-1:55 pm

1 stop23h 36m

Boise Air Term. Gowen Fld

Mon 9/21

2:50 pm-2:20 pm

1 stop22h 30m

$227

San AntonioBoise

SAT - BOI

SATBOI

San Antonio

Wed 9/16

3:19 pm-1:55 pm

1 stop23h 36m

Boise Air Term. Gowen Fld

Mon 9/21

2:50 pm-2:20 pm

1 stop22h 30m

$228

San AntonioSpokane

SAT - GEG

SATGEG

San Antonio

Sat 8/29

5:50 am-12:05 pm

1 stop8h 15m

Spokane

Sat 9/5

2:15 pm-10:55 pm

1 stop6h 40m

$335

San AntonioIdaho Falls

SAT - IDA

SATIDA

San Antonio

Sat 9/12

5:30 am-9:53 am

1 stop5h 23m

Idaho Falls Fanning Field

Tue 9/15

4:04 pm-11:57 pm

1 stop6h 53m

$339

San AntonioSpokane

SAT - GEG

SATGEG

San Antonio

Sat 8/29

9:10 am-12:35 pm

1 stop5h 25m

Spokane

Sat 9/5

6:00 am-9:16 pm

2 stops13h 16m

$340

San AntonioSpokane

SAT - GEG

SATGEG

San Antonio

Sat 8/29

6:20 am-12:05 pm

2 stops7h 45m

Spokane

Sat 9/5

1:40 pm-9:45 pm

1 stop6h 05m

$340

San AntonioSpokane

SAT - GEG

SATGEG

San Antonio

Thu 9/24

4:50 pm-11:48 pm

1 stop8h 58m

Spokane

Wed 9/30

6:45 am-5:10 pm

1 stop8h 25m

$347

Quickest round-trip

San AntonioSpokane

SAT - GEG

SATGEG

San Antonio

Wed 9/23

6:07 pm-10:54 pm

1 stop6h 47m

Spokane

Mon 9/28

5:14 pm-12:31 am

1 stop5h 17m

$347

San AntonioSpokane

SAT - GEG

SATGEG

San Antonio

Wed 9/23

6:00 am-11:55 am

1 stop7h 55m

Spokane

Tue 9/29

12:45 pm-9:06 pm

1 stop6h 21m

$347

San AntonioSpokane

SAT - GEG

SATGEG

San Antonio

Tue 9/8

8:00 am-11:54 am

1 stop5h 54m

Spokane

Tue 9/15

6:30 am-4:36 pm

1 stop8h 06m

$347

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 $322. 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 25% 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 04m
Direct flights	None

The fastest flight from San Antonio to Idaho takes 5h 04m

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 4 as of August 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 7.8 8,491 reviews	Search Delta flights
Southwest	PriceFrom $271	Free Cancellation	Rating 8.0 4,222 reviews	Search Southwest flights
United Airlines	PriceFrom $316	Free Cancellation	Rating 7.4 10,061 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.