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$165+ 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 8/19. Fares are subject to change and may not be available on all flights or dates of travel.
IDA — SAT
Jul 8 — Jul 151
Wed 7/8
Wed 7/15
1 adult, Economy
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Cheap 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 June 8, 2026.

This Delta deal was found by Cheapflights users on 6/3. 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 7/166:00 am
IDA
-
SAT
1 stop6h 36m
Delta
Mon 7/206:03 pm
SAT
-
IDA
1 stop5h 29m
Delta
Deal found 6/3$329
This Delta deal was found by Cheapflights users on 6/7. 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 7/303:22 pm
IDA
-
SAT
2 stops7h 32m
Delta
Sun 8/26:30 am
SAT
-
IDA
1 stop5h 13m
Delta
Deal found 6/7$334
This Delta deal was found by Cheapflights users on 6/6. 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 8/206:00 am
IDA
-
SAT
2 stops7h 57m
Delta
Sun 8/236:35 am
SAT
-
IDA
1 stop5h 15m
Delta
Deal found 6/6$359
This United Airlines deal was found by Cheapflights users on 6/7. 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 10/282:35 pm
IDA
-
SAT
2 stops7h 13m
United Airlines
Sat 10/314:20 pm
SAT
-
IDA
2 stops7h 33m
United Airlines
Deal found 6/7$362
This Expedia deal was found by Cheapflights users on 6/6. 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.
Fri 7/31:43 pm
IDA
-
SAT
1 stop14h 17m
Alaska Airlines
Fri 7/104:44 pm
SAT
-
IDA
1 stop6h 55m
Alaska Airlines
Deal found 6/6$374
This Delta deal was found by Cheapflights users on 6/6. 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 8/147:00 pm
IDA
-
SAT
1 stop4h 26m
Delta
Fri 8/216:25 am
SAT
-
IDA
2 stops12h 55m
Delta
Deal found 6/6$379
This United Airlines deal was found by Cheapflights users on 6/7. 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 9/302:28 pm
IDA
-
SAT
2 stops7h 23m
United Airlines
Sat 10/35:30 am
SAT
-
IDA
1 stop5h 23m
United Airlines
Deal found 6/7$393
This United Airlines deal was found by Cheapflights users on 6/4. 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 7/304:14 pm
IDA
-
SAT
1 stop6h 41m
United Airlines
Sun 8/25:30 am
SAT
-
IDA
1 stop5h 20m
United Airlines
Deal found 6/4$398

Find 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 June 8, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$329
(Delta)

One-way from

$165
(Priceline)

Popular in

March

Cheapest in

April

Average price

$369
Provider with most accurate pricing for Idaho Falls Fanning Field-San Antonio flight deals.
Search Deals
Provider most trusted by Cheapflights users for Idaho Falls Fanning Field-San Antonio flights.
Search Deals
From Idaho Falls Fanning Field to San Antonio
Search Deals
One-way flight from Idaho Falls Fanning Field to San Antonio
Search Deals
Highest demand for flights based on searches. 13% potential increase in price ($73 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease ($25 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in June 2026
Search Deals

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 June 8, 2026.
Use the filters below to find and compare flights from Idaho Falls to San Antonio that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Idaho FallsSan Antonio

IDA - SAT

IDASAT

Idaho Falls Fanning Field

Thu 7/16

6:00 am-1:36 pm

1 stop6h 36m

San Antonio

Mon 7/20

6:03 pm-10:32 pm

1 stop5h 29m

$329

Idaho FallsSan Antonio

IDA - SAT

IDASAT

Idaho Falls Fanning Field

Sun 8/30

6:00 am-2:53 pm

2 stops7h 53m

San Antonio

Sun 9/13

6:05 pm-10:14 pm

1 stop5h 09m

$379
Quickest round-trip

Idaho FallsSan Antonio

IDA - SAT

IDASAT

Idaho Falls Fanning Field

Fri 9/4

7:00 pm-12:26 am

1 stop4h 26m

San Antonio

Fri 9/18

6:02 pm-10:31 pm

1 stop5h 29m

$404

Idaho FallsSan Antonio

IDA - SAT

IDASAT

Idaho Falls Fanning Field

Sat 6/27

4:14 pm-11:59 pm

1 stop6h 45m

San Antonio

Sat 7/25

5:40 am-9:50 am

1 stop5h 10m

$412
Cheapest one-way

Idaho FallsSan Antonio

IDA - SAT

IDASAT

Idaho Falls Fanning Field

Wed 8/19

6:18 am-3:57 pm

1 stop8h 39m

$165

Idaho FallsSan Antonio

IDA - SAT

IDASAT

Idaho Falls Fanning Field

Wed 8/19

11:46 am-6:56 pm

3 stops30h 10m

$250

Idaho FallsSan Antonio

IDA - SAT

IDASAT

Idaho Falls Fanning Field

Thu 8/20

4:04 pm-11:57 pm

1 stop6h 53m

$276
Quickest one-way

Idaho FallsSan Antonio

IDA - SAT

IDASAT

Idaho Falls Fanning Field

Wed 8/19

2:20 pm-8:57 pm

1 stop5h 37m

$276

Idaho FallsSan Antonio

IDA - SAT

IDASAT

Idaho Falls Fanning Field

Thu 8/20

6:00 am-2:57 pm

2 stops7h 57m

$281

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/4

Sorted by cheapest first

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 June.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice 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, April is the cheapest month in which you can book a flight from Idaho Falls to San Antonio (average of $368). Flying from Idaho Falls to San Antonio in March is currently the most expensive (average of $740). 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.

How much does it cost to fly round-trip from Idaho Falls to San Antonio?

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 June 8, 2026.
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
8,396 reviews

Crew

8.5

Overall

7.9

Comfort

7.8

Boarding

8.1

Entertainment

7.8

Food

7.2

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2026

SEA - KOA

The snacks were not very good, not everyone was very friendly and professional
Delta
7.9
Good
8,396 reviews
Delta
7.9
Good
8,396 reviews

Crew

8.5

Overall

7.9

Comfort

7.8

Boarding

8.1

Entertainment

7.8

Food

7.2

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2026

SEA - KOA

The snacks were not very good, not everyone was very friendly and professional
United Airlines
7.4
Good
9,781 reviews
Delta
7.9
Good
8,396 reviews

Crew

8.5

Overall

7.9

Comfort

7.8

Boarding

8.1

Entertainment

7.8

Food

7.2

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2026

SEA - KOA

The snacks were not very good, not everyone was very friendly and professional

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?

    Delta can get you from Idaho Falls to San Antonio in just under 6h 36m. 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 ($308), and United Airlines ($362) offers the cheapest pricing from Idaho Falls to San Antonio. These flights start at 35% lower than the current average price 3 months from now.

  • 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, April is the cheapest month in which you can book a flight from Idaho Falls to San Antonio (average of $368). Flying from Idaho Falls to San Antonio in March is currently the most expensive (average of $740). 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 June 8, 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$308Average$469FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$362Average$455FlexibilityNo cancel feeOn-time69%

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