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$287+ Cheap flights from Idaho Falls to San Antonio (IDA - 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 8/31. Fares are subject to change and may not be available on all flights or dates of travel.
IDA — SAT
Aug 25 — Sep 11
Mon 8/25
Mon 9/1
1 adult, Economy
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Cheap flight deals from Idaho Falls to San Antonio

Discover tips and strategies to find the most affordable flight options for your journey from Idaho Falls (IDA) to San Antonio (SAT). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated August 20, 2025.

Round-trip from

$351
(American Airlines)

One-way from

$287
(Kiwi.com)

Popular in

September

Cheapest in

November

Average price

$472
From Idaho Falls Fanning Field to San Antonio
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One-way flight from Idaho Falls Fanning Field to San Antonio
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Highest demand for flights based on searches. 9% potential increase in price ($47 potential increase over avg. RT price).
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Cheapest flight prices on average. 5% potential price decrease ($26 potential savings vs. average RT price).
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Average for round-trip flights in August 2025
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Find flight deals from Idaho Falls to San Antonio

Cheapest flights from Idaho Falls to San Antonio
Explore the most affordable flight options available from Idaho Falls to San Antonio. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 20, 2025.

This American Airlines deal was found by Cheapflights users on 8/19. 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 9/1812:41 pmIDA - SAT
1 stop10h 01mAmerican Airlines
Thu 10/27:00 amSAT - IDA
1 stop7h 03mAmerican Airlines
Deal found 8/19$351
This Delta deal was found by Cheapflights users on 8/20. 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.
Fri 10/176:53 pmIDA - SAT
1 stop4h 38mDelta
Wed 10/227:30 amSAT - IDA
1 stop6h 03mDelta
Deal found 8/20$385
This American Airlines deal was found by Cheapflights users on 8/19. 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 9/36:44 amIDA - SAT
1 stop6h 21mAmerican Airlines
Sun 9/77:00 amSAT - IDA
1 stop7h 03mAmerican Airlines
Deal found 8/19$411
This Delta deal was found by Cheapflights users on 8/19. 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.
Wed 9/311:20 amIDA - SAT
2 stops11h 37mDelta
Sat 9/61:29 pmSAT - IDA
2 stops9h 58mDelta
Deal found 8/19$446
This United Airlines deal was found by Cheapflights users on 8/19. 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.
Thu 9/182:35 pmIDA - SAT
1 stop5h 11mUnited Airlines
Thu 10/211:45 amSAT - IDA
2 stops12h 04mUnited Airlines
Deal found 8/19$491
This United Airlines deal was found by Cheapflights users on 8/19. 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 9/35:00 amIDA - SAT
2 stops7h 22mUnited Airlines
Sun 9/77:10 amSAT - IDA
2 stops9h 19mUnited Airlines
Deal found 8/19$501
This United Airlines deal was found by Cheapflights users on 8/19. 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 9/35:00 amIDA - SAT
1 stop6h 48mUnited Airlines
Sat 9/64:37 pmSAT - IDA
1 stop5h 17mUnited Airlines
Deal found 8/19$516
This United Airlines deal was found by Cheapflights users on 8/17. 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.
Tue 9/22:35 pmIDA - SAT
1 stop5h 11mUnited Airlines
Sat 9/68:55 amSAT - IDA
1 stop5h 35mUnited Airlines
Deal found 8/17$541

Cheapflights Fare Finder

 
Customize your flight search to find flights from Idaho Falls 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 August 20, 2025.
Use the filters below to find and compare flights from Idaho Falls to San Antonio that are best for you.

Fly from

Idaho Falls

Fly to

San Antonio

Route

Depart

Return

Price

Idaho FallsSan Antonio

IDA - SAT

IDASAT

Idaho Falls Fanning Field

Thu 9/18

12:41 pm-11:42 pm

1 stop10h 01m

San Antonio

Thu 10/2

7:00 am-1:03 pm

1 stop7h 03m

$351

Idaho FallsSan Antonio

IDA - SAT

IDASAT

Idaho Falls Fanning Field

Fri 10/17

6:53 pm-12:31 am

1 stop4h 38m

San Antonio

Wed 10/22

7:30 am-12:33 pm

1 stop6h 03m

$385

Idaho FallsSan Antonio

IDA - SAT

IDASAT

Idaho Falls Fanning Field

Wed 9/3

6:44 am-2:05 pm

1 stop6h 21m

San Antonio

Sun 9/7

7:00 am-1:03 pm

1 stop7h 03m

$411

Idaho FallsSan Antonio

IDA - SAT

IDASAT

Idaho Falls Fanning Field

Wed 9/3

11:20 am-11:57 pm

2 stops11h 37m

San Antonio

Sat 9/6

1:29 pm-10:27 pm

2 stops9h 58m

$446

Idaho FallsSan Antonio

IDA - SAT

IDASAT

Idaho Falls Fanning Field

Thu 9/18

2:35 pm-8:46 pm

1 stop5h 11m

San Antonio

Thu 10/2

11:45 am-10:49 pm

2 stops12h 04m

$491

Idaho FallsSan Antonio

IDA - SAT

IDASAT

Idaho Falls Fanning Field

Wed 9/3

5:00 am-1:22 pm

2 stops7h 22m

San Antonio

Sun 9/7

7:10 am-3:29 pm

2 stops9h 19m

$501

Idaho FallsSan Antonio

IDA - SAT

IDASAT

Idaho Falls Fanning Field

Wed 9/3

5:00 am-12:48 pm

1 stop6h 48m

San Antonio

Sat 9/6

4:37 pm-8:54 pm

1 stop5h 17m

$516

Idaho FallsSan Antonio

IDA - SAT

IDASAT

Idaho Falls Fanning Field

Tue 9/2

2:35 pm-8:46 pm

1 stop5h 11m

San Antonio

Sat 9/6

8:55 am-1:30 pm

1 stop5h 35m

$541

Idaho FallsSan Antonio

IDA - SAT

IDASAT

Idaho Falls Fanning Field

Sun 8/31

5:51 pm-7:33 pm

1 stop24h 42m

$287

Idaho FallsSan Antonio

IDA - SAT

IDASAT

Idaho Falls Fanning Field

Tue 9/2

3:57 pm-6:57 pm

1 stop26h 00m

$306

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/19

Showing 1-10 of 15 results
1
2

Best time to book a flight from Idaho Falls to San Antonio

Have a flexible travel schedule? Discover the best time to fly to San Antonio from Idaho Falls 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 Falls to San Antonio

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

Currently, August is the cheapest month in which you can book a flight from Idaho Falls to San Antonio (average of $295). Flying from Idaho Falls 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 IDA to SAT?

Find hourly flight availability from Idaho Falls 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 August 20, 2025.

It’s optimal to fly from Idaho Falls to San Antonio in the afternoon. By choosing this option you can save up to 28% on the cost of your flight, compared to a flight in the morning.

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 August 20, 2025.
Read through reviews of airlines operating flights from Idaho Falls to San Antonio, such as Delta, United Airlines, and American Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,982 reviews

Overall

8.0

Crew

8.5

Food

7.3

Comfort

7.9

Boarding

8.2

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Delta
8.0
Very good
7,982 reviews
Delta
8.0
Very good
7,982 reviews

Overall

8.0

Crew

8.5

Food

7.3

Comfort

7.9

Boarding

8.2

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
United Airlines
7.4
Good
8,928 reviews
Delta
8.0
Very good
7,982 reviews

Overall

8.0

Crew

8.5

Food

7.3

Comfort

7.9

Boarding

8.2

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very good
7,982 reviews

Overall

8.0

Crew

8.5

Food

7.3

Comfort

7.9

Boarding

8.2

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Related info for your journey

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

  • How long is the flight from Idaho Falls to San Antonio?

    American Airlines and Delta can get you from Idaho Falls to San Antonio in just under 4h 38m. Your travel time can differ by up to 5h 23m. There are 1222 mi between Idaho Falls and San Antonio. Both multi-stop and nonstop flights can be found to your destination and back.

  • What are the cheapest airlines flying from Idaho Falls to San Antonio round-trip?

    According to our current data, Delta ($230), American Airlines ($286), and United Airlines ($334) offers the cheapest pricing from Idaho Falls to San Antonio. These flights start at 52% lower than the current average price 3 months from now.

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

    The cheapest airlines for a one-way flight from Idaho Falls to San Antonio are Alaska Airlines ($306), United Airlines ($351), and Delta ($360).

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

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

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

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

    Yes. Cheapflights offers flight deals from Idaho Falls 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 Falls to San Antonio?

    Currently, August is the cheapest month in which you can book a flight from Idaho Falls to San Antonio (average of $295). Flying from Idaho Falls 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
Kerrville

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Top 3 airlines flying from Idaho Falls to San Antonio

Discover the top 3 airlines that operate flights from Idaho Falls 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 August 20, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$230Average$392FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$286Average$457FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$334Average$489FlexibilityNo cancel feeOn-time69%

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