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Idaho Falls

$296+ Cheap flights from San Antonio to Idaho Falls (SAT - IDA)

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 8/19. Fares are subject to change and may not be available on all flights or dates of travel.
SAT — IDA
Aug 19 — Aug 261
Tue 8/19
Tue 8/26
1 adult, Economy
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Cheap flight deals from San Antonio to Idaho Falls

Discover tips and strategies to find the most affordable flight options for your journey from San Antonio (SAT) to Idaho Falls (IDA). 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 14, 2025.

Round-trip from

$346
(Kiwi.com)

One-way from

$296
(United Airlines)

Popular in

March

Cheapest in

January

Average price

$531
From San Antonio to Idaho Falls Fanning Field
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One-way flight from San Antonio to Idaho Falls Fanning Field
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Highest demand for flights based on searches. 9% potential increase in price ($56 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($13 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 San Antonio to Idaho Falls

Cheapest flights from San Antonio to Idaho Falls
Explore the most affordable flight options available from San Antonio to Idaho Falls. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 14, 2025.

This Kiwi.com deal was found by Cheapflights users on 8/13. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/289:33 pmSAT - IDA
1 stop18h 16mMultiple Airlines
Mon 10/67:40 pmIDA - SAT
1 stop8h 07mMultiple Airlines
Deal found 8/13$346
This Delta deal was found by Cheapflights users on 8/12. 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.
Tue 11/118:00 amSAT - IDA
1 stop5h 29mDelta
Fri 11/146:50 pmIDA - SAT
1 stop4h 56mDelta
Deal found 8/12$351
This Kiwi.com deal was found by Cheapflights users on 8/14. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/118:37 pmSAT - IDA
2 stops20h 28mMultiple Airlines
Mon 9/159:39 pmIDA - SAT
1 stop22h 13mMultiple Airlines
Deal found 8/14$385
This United Airlines deal was found by Cheapflights users on 8/12. 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 8/278:55 amSAT - IDA
1 stop7h 34mUnited Airlines
Sun 8/317:00 amIDA - SAT
1 stop4h 48mUnited Airlines
Deal found 8/12$436
This United Airlines deal was found by Cheapflights users on 8/12. 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 11/1111:40 amSAT - IDA
2 stops10h 23mUnited Airlines
Fri 11/145:00 amIDA - SAT
2 stops9h 29mUnited Airlines
Deal found 8/12$476
This United Airlines deal was found by Cheapflights users on 8/13. 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.
Sun 9/287:38 pmSAT - IDA
2 stops15h 10mUnited Airlines
Mon 10/65:56 pmIDA - SAT
1 stop25h 59mUnited Airlines
Deal found 8/13$544
This Delta deal was found by Cheapflights users on 8/13. 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.
Sat 8/236:40 amSAT - IDA
2 stops12h 31mDelta
Wed 8/273:00 pmIDA - SAT
1 stop5h 22mDelta
Deal found 8/13$561

Cheapflights Fare Finder

 
Customize your flight search to find flights from San Antonio to Idaho Falls 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 14, 2025.
Use the filters below to find and compare flights from San Antonio to Idaho Falls that are best for you.

Fly from

San Antonio

Fly to

Idaho Falls

Route

Depart

Return

Price

San AntonioIdaho Falls

SAT - IDA

SATIDA

San Antonio

Sun 9/28

9:33 pm-2:49 pm

1 stop18h 16m

Idaho Falls Fanning Field

Mon 10/6

7:40 pm-4:47 am

1 stop8h 07m

$346

San AntonioIdaho Falls

SAT - IDA

SATIDA

San Antonio

Tue 11/11

8:00 am-12:29 pm

1 stop5h 29m

Idaho Falls Fanning Field

Fri 11/14

6:50 pm-12:46 am

1 stop4h 56m

$351

San AntonioIdaho Falls

SAT - IDA

SATIDA

San Antonio

Thu 9/11

8:37 pm-4:05 pm

2 stops20h 28m

Idaho Falls Fanning Field

Mon 9/15

9:39 pm-8:52 pm

1 stop22h 13m

$385

San AntonioIdaho Falls

SAT - IDA

SATIDA

San Antonio

Wed 8/27

8:55 am-3:29 pm

1 stop7h 34m

Idaho Falls Fanning Field

Sun 8/31

7:00 am-12:48 pm

1 stop4h 48m

$436

San AntonioIdaho Falls

SAT - IDA

SATIDA

San Antonio

Tue 11/11

11:40 am-9:03 pm

2 stops10h 23m

Idaho Falls Fanning Field

Fri 11/14

5:00 am-3:29 pm

2 stops9h 29m

$476

San AntonioIdaho Falls

SAT - IDA

SATIDA

San Antonio

Sun 9/28

7:38 pm-9:48 am

2 stops15h 10m

Idaho Falls Fanning Field

Mon 10/6

5:56 pm-8:55 pm

1 stop25h 59m

$544

San AntonioIdaho Falls

SAT - IDA

SATIDA

San Antonio

Tue 8/19

8:55 am-3:11 pm

1 stop7h 16m

$296

San AntonioIdaho Falls

SAT - IDA

SATIDA

San Antonio

Tue 8/19

5:30 am-10:39 pm

3 stops18h 09m

$732

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/11

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

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

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

Currently, October is the cheapest month in which you can book a flight from San Antonio to Idaho Falls (average of $380). Flying from San Antonio to Idaho Falls in December is currently the most expensive (average of $578). 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.

Reviews of airlines servicing Idaho Falls

Get insights into the airlines that provide service to Idaho Falls. 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 Idaho Falls. Reviews last updated August 14, 2025.
Read through reviews of airlines operating flights from San Antonio to Idaho Falls, such as Delta and United Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,980 reviews

Crew

8.5

Boarding

8.2

Food

7.3

Comfort

7.9

Entertainment

7.9

Overall

8.0

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
7,980 reviews
Delta
8.0
Very good
7,980 reviews

Crew

8.5

Boarding

8.2

Food

7.3

Comfort

7.9

Entertainment

7.9

Overall

8.0

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
8,916 reviews
Delta
8.0
Very good
7,980 reviews

Crew

8.5

Boarding

8.2

Food

7.3

Comfort

7.9

Entertainment

7.9

Overall

8.0

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

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

    Currently priced at $325, United Airlines will fly you from San Antonio to Idaho Falls and back. In addition to United Airlines, many other airlines offer competitively priced options for your trip. Check Cheapflights for deals on Delta for as low as $371. United Airlines is 38% cheaper than the average price of flights available within the next 90 days to this destination.

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

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

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

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

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

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

    Currently, October is the cheapest month in which you can book a flight from San Antonio to Idaho Falls (average of $380). Flying from San Antonio to Idaho Falls in December is currently the most expensive (average of $578). 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 Idaho Falls?

Book flights to Idaho Falls if you plan to visit one of these locations
Rexburg

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Top 2 airlines flying from San Antonio to Idaho Falls

Discover the top 2 airlines that operate flights from San Antonio to Idaho Falls. 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 14, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$325Average$513FlexibilityNo cancel feeOn-time69%
DeltaCheapest$371Average$548FlexibilityNo cancel feeOn-timeN/A

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