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$207+ 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 11/22. Fares are subject to change and may not be available on all flights or dates of travel.
IDA — SAT
Nov 22 — Nov 291
Sat 11/22
Sat 11/29
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 October 23, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$511
(United Airlines)

One-way from

$207
(Delta)

Popular in

March

Cheapest in

February

Average price

$418
Provider with most accurate pricing for Idaho Falls Fanning Field-San Antonio flight deals.
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Provider most trusted by Cheapflights users for Idaho Falls Fanning Field-San Antonio flights.
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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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High demand for flights, 2% potential price rise
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Cheapest flight prices on average. 1% potential price decrease ($10 potential savings vs. average RT price).
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Average for round-trip flights in October 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 October 23, 2025.

This United Airlines deal was found by Cheapflights users on 10/21. 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 11/52:45 pmIDA - SAT
1 stop6h 04mUnited Airlines
Sun 11/98:30 amSAT - IDA
1 stop6h 05mUnited Airlines
Deal found 10/21$511
This United Airlines deal was found by Cheapflights users on 10/22. 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 11/64:15 pmIDA - SAT
1 stop5h 12mUnited Airlines
Mon 11/108:30 amSAT - IDA
1 stop7h 46mUnited Airlines
Deal found 10/22$536
This United Airlines deal was found by Cheapflights users on 10/22. 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 10/302:45 pmIDA - SAT
1 stop6h 42mUnited Airlines
Mon 11/34:30 pmSAT - IDA
1 stop5h 33mUnited Airlines
Deal found 10/22$541
This Expedia deal was found by Cheapflights users on 10/22. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/182:43 pmIDA - SAT
1 stop13h 22mAlaska Airlines
Mon 1/57:33 pmSAT - IDA
1 stop29h 34mAlaska Airlines
Deal found 10/22$693
This Delta deal was found by Cheapflights users on 10/22. 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 12/186:00 amIDA - SAT
2 stops7h 50mDelta
Mon 1/56:05 pmSAT - IDA
1 stop5h 16mDelta
Deal found 10/22$713
This United Airlines deal was found by Cheapflights users on 10/22. 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 11/254:15 pmIDA - SAT
1 stop5h 12mUnited Airlines
Sun 11/307:30 pmSAT - IDA
2 stops15h 18mUnited Airlines
Deal found 10/22$837

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 October 23, 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

Wed 11/5

2:45 pm-9:49 pm

1 stop6h 04m

San Antonio

Sun 11/9

8:30 am-1:35 pm

1 stop6h 05m

$511

Idaho FallsSan Antonio

IDA - SAT

IDASAT

Idaho Falls Fanning Field

Thu 11/6

4:15 pm-10:27 pm

1 stop5h 12m

San Antonio

Mon 11/10

8:30 am-3:16 pm

1 stop7h 46m

$536

Idaho FallsSan Antonio

IDA - SAT

IDASAT

Idaho Falls Fanning Field

Thu 10/30

2:45 pm-10:27 pm

1 stop6h 42m

San Antonio

Mon 11/3

4:30 pm-9:03 pm

1 stop5h 33m

$541

Idaho FallsSan Antonio

IDA - SAT

IDASAT

Idaho Falls Fanning Field

Thu 12/18

2:43 pm-5:05 am

1 stop13h 22m

San Antonio

Mon 1/5

7:33 pm-12:07 am

1 stop29h 34m

$693

Idaho FallsSan Antonio

IDA - SAT

IDASAT

Idaho Falls Fanning Field

Thu 12/18

6:00 am-2:50 pm

2 stops7h 50m

San Antonio

Mon 1/5

6:05 pm-10:21 pm

1 stop5h 16m

$713

Idaho FallsSan Antonio

IDA - SAT

IDASAT

Idaho Falls Fanning Field

Tue 11/25

4:15 pm-10:27 pm

1 stop5h 12m

San Antonio

Sun 11/30

7:30 pm-9:48 am

2 stops15h 18m

$837

Idaho FallsSan Antonio

IDA - SAT

IDASAT

Idaho Falls Fanning Field

Sat 11/22

6:57 pm-12:35 am

1 stop4h 38m

$207

Idaho FallsSan Antonio

IDA - SAT

IDASAT

Idaho Falls Fanning Field

Sat 11/22

4:15 pm-10:29 pm

1 stop5h 14m

$224

Idaho FallsSan Antonio

IDA - SAT

IDASAT

Idaho Falls Fanning Field

Sat 11/22

6:17 pm-1:05 pm

3 stops41h 48m

$389

Idaho FallsSan Antonio

IDA - SAT

IDASAT

Idaho Falls Fanning Field

Sat 11/22

7:10 am-9:59 pm

2 stops13h 49m

$425

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/22

Compare providers for flights from Idaho Falls to San Antonio

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Idaho Falls to San Antonio in October.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Idaho Falls-San Antonio flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Idaho Falls-San Antonio flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Idaho Falls-San Antonio flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Idaho Falls-San Antonio flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Idaho Falls-San Antonio flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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, December is the cheapest month in which you can book a flight from Idaho Falls to San Antonio (average of $147). Flying from Idaho Falls to San Antonio in July is currently the most expensive (average of $430). 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 October 23, 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 October 23, 2025.
Read through reviews of airlines operating flights from Idaho Falls to San Antonio, such as Delta and United Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Delta
7.9
Good
7,982 reviews

Entertainment

7.9

Boarding

8.2

Overall

7.9

Comfort

7.9

Food

7.3

Crew

8.5

Reviews

1 / 20
8.0
Excellent

Matthew,Oct 2025

GSP - ATL

This is always a full flight since it is the connecting route to primary destinations through Atlanta. That said, the crew handles the full load well. Not much more to say, it is a short flight with no in-flight services due to the length.
Delta
7.9
Good
7,982 reviews
Delta
7.9
Good
7,982 reviews

Entertainment

7.9

Boarding

8.2

Overall

7.9

Comfort

7.9

Food

7.3

Crew

8.5

Reviews

1 / 20
8.0
Excellent

Matthew,Oct 2025

GSP - ATL

This is always a full flight since it is the connecting route to primary destinations through Atlanta. That said, the crew handles the full load well. Not much more to say, it is a short flight with no in-flight services due to the length.
United Airlines
7.4
Good
8,995 reviews
Delta
7.9
Good
7,982 reviews

Entertainment

7.9

Boarding

8.2

Overall

7.9

Comfort

7.9

Food

7.3

Crew

8.5

Reviews

1 / 20
8.0
Excellent

Matthew,Oct 2025

GSP - ATL

This is always a full flight since it is the connecting route to primary destinations through Atlanta. That said, the crew handles the full load well. Not much more to say, it is a short flight with no in-flight services due to the length.

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?

    United Airlines can get you from Idaho Falls to San Antonio in just under 6h 04m. Your travel time can differ by up to . There are 1222 mi between Idaho Falls and San Antonio.

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

    According to our current data, Delta ($230), and United Airlines ($387) offers the cheapest pricing from Idaho Falls to San Antonio. These flights start at 50% 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 Delta ($207), United Airlines ($224), and American Airlines ($425).

  • 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, December is the cheapest month in which you can book a flight from Idaho Falls to San Antonio (average of $147). Flying from Idaho Falls to San Antonio in July is currently the most expensive (average of $430). 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 2 airlines flying from Idaho Falls to San Antonio

Discover the top 2 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 October 23, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$230Average$392FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$387Average$479FlexibilityNo cancel feeOn-time69%

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