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$125+ Cheap flights from Idaho to San Antonio (SAT)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 8/27. Fares are subject to change and may not be available on all flights or dates of travel.
BOI — SAT
Aug 5 — Aug 121
Tue 8/5
Tue 8/12
1 adult, Economy
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Cheap flight deals from Idaho to San Antonio

Keep the following information in mind while searching for Idaho to San Antonio flight deals. Data was last updated July 31, 2025.

Round-trip from

$194
(CheapOair)

One-way from

$125
(American Airlines)

Popular in

December

Cheapest in

August

Average price

$314
From Idaho to San Antonio
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One-way flight from Idaho to San Antonio
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Highest demand for flights based on searches. 10% potential increase in price ($41 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($13 potential savings vs. average RT price).
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Average for round-trip flights in July 2025
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Find flight deals from Idaho to San Antonio

Cheapest flights from Idaho to San Antonio
Explore the most affordable flight options available from Idaho to San Antonio. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 31, 2025.

This CheapOair deal was found by Cheapflights users on 7/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/178:58 pmBOI - SAT
1 stop6h 57mSpirit Airlines
Sat 10/256:00 amSAT - BOI
1 stop8h 21mSpirit Airlines
Deal found 7/29$194
This Hawaiian Airlines deal was found by Cheapflights users on 7/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Hawaiian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/1010:00 amBOI - SAT
1 stop7h 57mHawaiian Airlines
Mon 9/156:27 amSAT - BOI
1 stop9h 33mHawaiian Airlines
Deal found 7/31$248
This American Airlines deal was found by Cheapflights users on 7/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/271:36 pmBOI - SAT
1 stop7h 36mAmerican Airlines
Wed 9/38:00 amSAT - BOI
1 stop5h 48mAmerican Airlines
Deal found 7/28$249
This Southwest deal was found by Cheapflights users on 7/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/104:05 pmBOI - SAT
1 stop4h 55mSouthwest
Wed 9/178:30 amSAT - BOI
2 stops7h 40mSouthwest
Deal found 7/30$254
This Hawaiian Airlines deal was found by Cheapflights users on 7/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Hawaiian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/141:31 pmGEG - SAT
1 stop8h 33mHawaiian Airlines
Tue 10/216:40 amSAT - GEG
1 stop7h 57mHawaiian Airlines
Deal found 7/29$258
This FlightHub deal was found by Cheapflights users on 7/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/411:53 amGEG - SAT
1 stop5h 22mFrontier
Thu 9/118:16 pmSAT - GEG
1 stop16h 42mFrontier
Deal found 7/30$265
This American Airlines deal was found by Cheapflights users on 7/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/283:10 pmGEG - SAT
1 stop6h 47mAmerican Airlines
Mon 9/17:02 amSAT - GEG
1 stop6h 37mAmerican Airlines
Deal found 7/29$271
This Southwest deal was found by Cheapflights users on 7/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/32:45 pmGEG - SAT
1 stop5h 55mSouthwest
Tue 9/96:00 pmSAT - GEG
1 stop6h 05mSouthwest
Deal found 7/29$289
This Delta deal was found by Cheapflights users on 7/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/153:45 pmBOI - SAT
1 stop7h 07mDelta
Sat 9/2012:40 pmSAT - BOI
2 stops12h 17mDelta
Deal found 7/31$290
This Delta deal was found by Cheapflights users on 7/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/256:00 amGEG - SAT
2 stops16h 19mDelta
Mon 9/296:05 pmSAT - GEG
1 stop7h 30mDelta
Deal found 7/28$301
This United Airlines deal was found by Cheapflights users on 7/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/1712:35 pmGEG - SAT
1 stop7h 42mUnited Airlines
Sun 9/215:30 amSAT - GEG
2 stops9h 06mUnited Airlines
Deal found 7/31$310
This Alaska Airlines deal was found by Cheapflights users on 7/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/171:35 pmBOI - SAT
1 stop9h 29mAlaska Airlines
Sat 10/256:40 amSAT - BOI
2 stops12h 49mAlaska Airlines
Deal found 7/29$331

Cheapflights Fare Finder

 
Customize your flight search to find flights from Idaho to San Antonio that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated July 31, 2025.
Use the filters below to find and compare flights from Idaho to San Antonio that are best for you.

Fly from

Idaho

Fly to

San Antonio

Route

Depart

Return

Price

BoiseSan Antonio

BOI - SAT

BOISAT

Boise Air Term. Gowen Fld

Fri 10/17

8:58 pm-4:55 am

1 stop6h 57m

San Antonio

Sat 10/25

6:00 am-1:21 pm

1 stop8h 21m

$194

BoiseSan Antonio

BOI - SAT

BOISAT

Boise Air Term. Gowen Fld

Wed 9/10

10:00 am-6:57 pm

1 stop7h 57m

San Antonio

Mon 9/15

6:27 am-3:00 pm

1 stop9h 33m

$248

BoiseSan Antonio

BOI - SAT

BOISAT

Boise Air Term. Gowen Fld

Sat 1/10

11:45 am-5:23 pm

1 stop4h 38m

San Antonio

Wed 1/14

8:00 am-12:18 pm

1 stop5h 18m

$249

BoiseSan Antonio

BOI - SAT

BOISAT

Boise Air Term. Gowen Fld

Wed 9/10

4:05 pm-10:00 pm

1 stop4h 55m

San Antonio

Wed 9/17

8:30 am-3:10 pm

2 stops7h 40m

$254

SpokaneSan Antonio

GEG - SAT

GEGSAT

Spokane

Tue 10/14

1:31 pm-12:04 am

1 stop8h 33m

San Antonio

Tue 10/21

6:40 am-12:37 pm

1 stop7h 57m

$258

BoiseSan Antonio

BOI - SAT

BOISAT

Boise Air Term. Gowen Fld

Wed 8/27

1:50 pm-10:59 pm

2 stops8h 09m

San Antonio

Wed 9/3

5:00 am-1:17 pm

2 stops9h 17m

$259

SpokaneSan Antonio

GEG - SAT

GEGSAT

Spokane

Thu 9/4

11:53 am-7:15 pm

1 stop5h 22m

San Antonio

Thu 9/11

8:16 pm-10:58 am

1 stop16h 42m

$265

SpokaneSan Antonio

GEG - SAT

GEGSAT

Spokane

Thu 8/28

3:10 pm-11:57 pm

1 stop6h 47m

San Antonio

Mon 9/1

7:02 am-11:39 am

1 stop6h 37m

$271

BoiseSan Antonio

BOI - SAT

BOISAT

Boise Air Term. Gowen Fld

Sat 1/10

9:50 am-5:58 pm

1 stop7h 08m

San Antonio

Sat 1/10

7:00 pm-9:26 am

1 stop15h 26m

$288

SpokaneSan Antonio

GEG - SAT

GEGSAT

Spokane

Wed 9/3

2:45 pm-10:40 pm

1 stop5h 55m

San Antonio

Tue 9/9

6:00 pm-10:05 pm

1 stop6h 05m

$289

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/28

Showing 1-10 of 37 results
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Best time to book a flight from Idaho to San Antonio

Have a flexible travel schedule? Discover the best time to fly to San Antonio from Idaho with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Idaho to San Antonio

What is the cheapest month to book a flight from Idaho to San Antonio?

Currently, August is the cheapest month in which you can book a flight from Idaho to San Antonio (average of $295). Flying from Idaho to San Antonio in March is currently the most expensive (average of $376). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from ID to SAT?

Find hourly flight availability from Idaho to San Antonio. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated July 31, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Idaho to San Antonio as you normally would.

Reviews of airlines servicing San Antonio

Get insights into the airlines that provide service to San Antonio. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to San Antonio. Reviews last updated July 31, 2025.
Read reviews from past customers who have flown Alaska Airlines, Southwest, and Delta from Idaho to San Antonio. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Boarding

8.1

Crew

8.5

Entertainment

7.1

Overall

8.0

Food

7.1

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Boarding

8.1

Crew

8.5

Entertainment

7.1

Overall

8.0

Food

7.1

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
Southwest
8.0
Very good
4,246 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Boarding

8.1

Crew

8.5

Entertainment

7.1

Overall

8.0

Food

7.1

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
Delta
8.0
Very good
7,981 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Boarding

8.1

Crew

8.5

Entertainment

7.1

Overall

8.0

Food

7.1

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
Hawaiian Airlines
7.8
Good
2,611 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Boarding

8.1

Crew

8.5

Entertainment

7.1

Overall

8.0

Food

7.1

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
United Airlines
7.4
Good
8,900 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Boarding

8.1

Crew

8.5

Entertainment

7.1

Overall

8.0

Food

7.1

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.

Related info for your journey

Find useful and relevant information for your journey from Idaho to San Antonio. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to San Antonio from Idaho?

    Most people fly into San Antonio (SAT) if they book a flight to San Antonio from Idaho. San Antonio is conveniently located just 7.6 mi from San Antonio’s city center.

  • What are the cheapest airlines to fly from Idaho to San Antonio one-way?

    One-way options have recently been found by users for as low as $125 on American Airlines. Other airlines that offer cheap prices include Alaska Airlines from $135 and Southwest from $141 one-way.

  • What are the most popular routes from Idaho to San Antonio?

    When deciding which route to take from Idaho to San Antonio consider Spokane - San Antonio, Boise Air Term. Gowen Fld - San Antonio or Idaho Falls Fanning Field - San Antonio as they are the most popular.

  • Can I find deals for flights from Idaho to San Antonio that include hotel bookings?

    Yes. In addition to deals on Idaho to San Antonio flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Idaho to San Antonio?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Idaho to San Antonio.

  • Can I find deals for business class flights from Idaho to San Antonio?

    Yes. Cheapflights offers flight deals from Idaho to San Antonio by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Idaho to San Antonio?

    Currently, August is the cheapest month in which you can book a flight from Idaho to San Antonio (average of $295). Flying from Idaho to San Antonio in March is currently the most expensive (average of $376). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near San Antonio?

Book flights to San Antonio if you plan to visit one of these locations
New Braunfels

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Alternative routes for Idaho to San Antonio

See prices for flight routes from nearby airports that may be better suited for you.
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Top 5 airlines flying from Idaho to San Antonio

Discover the top 5 airlines that operate flights from Idaho to San Antonio. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated July 31, 2025.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$130Average$198FlexibilityNo cancel feeOn-time65%
DeltaCheapest$230Average$361FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$268Average$401FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$272Average$446FlexibilityNo cancel feeOn-time63%
United AirlinesCheapest$288Average$471FlexibilityNo cancel feeOn-time69%

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