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Idaho Falls

$371+ Cheap flights from San Antonio to Idaho Falls (SAT - IDA)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/29. Fares are subject to change and may not be available on all flights or dates of travel.
SAT — IDA
Oct 17 — Oct 241
Fri 10/17
Fri 10/24
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 September 17, 2025.

Round-trip from

$371
(Alaska Airlines)

Popular in

September

Cheapest in

January

Average price

$714
From San Antonio to Idaho Falls Fanning Field
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Highest demand for flights based on searches. 5% potential increase in price ($29 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($16 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in September 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 September 17, 2025.

This Alaska Airlines deal was found by Cheapflights users on 9/16. 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.
Wed 10/296:32 amSAT - IDA
1 stop9h 41mAlaska Airlines
Tue 11/43:50 pmIDA - SAT
1 stop25h 05mAlaska Airlines
Deal found 9/16$371
This United Airlines deal was found by Cheapflights users on 9/16. 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 9/309:00 amSAT - IDA
1 stop5h 33mUnited Airlines
Tue 10/75:00 amIDA - SAT
1 stop6h 45mUnited Airlines
Deal found 9/16$401
This United Airlines deal was found by Cheapflights users on 9/16. 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 9/304:39 pmSAT - IDA
1 stop5h 13mUnited Airlines
Thu 10/92:35 pmIDA - SAT
1 stop5h 20mUnited Airlines
Deal found 9/16$440
This American Airlines deal was found by Cheapflights users on 9/16. 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 10/296:05 amSAT - IDA
1 stop7h 19mAmerican Airlines
Tue 11/47:10 amIDA - SAT
2 stops14h 41mAmerican Airlines
Deal found 9/16$454
This Delta deal was found by Cheapflights users on 9/16. 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 9/277:15 amSAT - IDA
1 stop6h 11mDelta
Wed 10/16:51 pmIDA - SAT
1 stop4h 28mDelta
Deal found 9/16$529
This Alaska Airlines deal was found by Cheapflights users on 9/16. 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.
Sun 12/217:20 pmSAT - IDA
1 stop29h 47mAlaska Airlines
Tue 12/236:00 amIDA - SAT
1 stop22h 05mAlaska Airlines
Deal found 9/16$572

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 September 17, 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

Wed 10/29

6:32 am-3:13 pm

1 stop9h 41m

Idaho Falls Fanning Field

Tue 11/4

3:50 pm-5:55 pm

1 stop25h 05m

$371

San AntonioIdaho Falls

SAT - IDA

SATIDA

San Antonio

Tue 9/30

9:00 am-1:33 pm

1 stop5h 33m

Idaho Falls Fanning Field

Tue 10/7

5:00 am-12:45 pm

1 stop6h 45m

$401

San AntonioIdaho Falls

SAT - IDA

SATIDA

San Antonio

Tue 9/30

4:39 pm-8:52 pm

1 stop5h 13m

Idaho Falls Fanning Field

Thu 10/9

2:35 pm-8:55 pm

1 stop5h 20m

$440

San AntonioIdaho Falls

SAT - IDA

SATIDA

San Antonio

Wed 10/29

6:05 am-12:24 pm

1 stop7h 19m

Idaho Falls Fanning Field

Tue 11/4

7:10 am-10:51 pm

2 stops14h 41m

$454

San AntonioIdaho Falls

SAT - IDA

SATIDA

San Antonio

Sat 9/27

7:15 am-12:26 pm

1 stop6h 11m

Idaho Falls Fanning Field

Wed 10/1

6:51 pm-12:19 am

1 stop4h 28m

$569

San AntonioIdaho Falls

SAT - IDA

SATIDA

San Antonio

Sun 12/21

7:20 pm-12:07 am

1 stop29h 47m

Idaho Falls Fanning Field

Tue 12/23

6:00 am-5:05 am

1 stop22h 05m

$572

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/16

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 September 17, 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
7,961 reviews

Boarding

8.2

Comfort

7.9

Crew

8.5

Entertainment

7.9

Food

7.3

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
7,961 reviews
Delta
8.0
Very good
7,961 reviews

Boarding

8.2

Comfort

7.9

Crew

8.5

Entertainment

7.9

Food

7.3

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
8,926 reviews
Delta
8.0
Very good
7,961 reviews

Boarding

8.2

Comfort

7.9

Crew

8.5

Entertainment

7.9

Food

7.3

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.

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

    A quick flight from San Antonio to Idaho Falls can take about 5h 33m. Alaska Airlines provides one of the quickest options available for as low as $401. There are 1222 mi between San Antonio and Idaho Falls. This flight may include one or multiple stops.

  • 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 39% 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 September 17, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$325Average$540FlexibilityNo cancel feeOn-time69%
DeltaCheapest$371Average$511FlexibilityNo cancel feeOn-timeN/A

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