$359+ Cheap flights from Idaho Falls to San Antonio (IDA - SAT)
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 10/30. Fares are subject to change and may not be available on all flights or dates of travel.
IDA — SAT
Oct 23 — Oct 301
Round-trip
1 adult, Economy
We work with more than 300 partners to bring you better travel deals
Find cheap flights from Idaho Falls to San Antonio with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from Idaho Falls to San Antonio
Cheapest
Best
Last-minute
One-way
Cheapest flights from Idaho Falls to San AntonioExplore 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 September 23, 2026.
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 September 23, 2026.
This Delta deal was found by Cheapflights users on 9/20. 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 10/306:56 pm -
1 stop4h 34m
Sun 11/16:35 am -
1 stop6h 47m
Deal found 9/20![Delta logo]()
$359
This Delta deal was found by Cheapflights users on 9/22. 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.
Wed 10/76:00 am -
1 stop6h 40m
Sun 10/116:00 pm -
1 stop5h 10m
Deal found 9/22![Delta logo]()
$429
This United Airlines deal was found by Cheapflights users on 9/20. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/302:35 pm -
2 stops7h 16m
Sun 11/15:30 am -
2 stops8h 58m
Deal found 9/20![United Airlines logo]()
$460
This American Airlines deal was found by Cheapflights users on 9/21. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/221:58 pm -
1 stop8h 57m
Tue 9/294:27 pm -
1 stop5h 53m
Deal found 9/21![American Airlines logo]()
$507
This Delta deal was found by Cheapflights users on 9/21. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/221:05 pm -
2 stops10h 08m
Tue 9/296:01 pm -
1 stop5h 21m
Deal found 9/21![Delta logo]()
$519
This Delta deal was found by Cheapflights users on 9/21. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/236:00 am -
2 stops7h 49m
Wed 9/307:05 am -
2 stops12h 12m
Deal found 9/21![Delta logo]()
$600
This Kiwi.com deal was found by Cheapflights users on 9/18. 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 10/2510:02 am -
2 stops34h 47m
Sun 11/110:29 pm -
1 stop15h 07m
Deal found 9/18![Multiple Airlines logo]()
$614
This United Airlines deal was found by Cheapflights users on 9/18. 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 10/252:35 pm -
1 stop5h 18m
Sun 11/18:56 am -
1 stop5h 32m
Deal found 9/18![United Airlines logo]()
$631
This United Airlines deal was found by Cheapflights users on 9/18. 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 10/252:35 pm -
1 stop5h 18m
Sat 10/315:30 am -
2 stops11h 08m
Deal found 9/18![United Airlines logo]()
$636
This deal was found by Cheapflights users on 9/18. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/92:35 pm -
1 stop5h 18m
Thu 11/128:56 am -
1 stop5h 32m
Deal found 9/18![United Airlines logo]()
$677
Best flights from Idaho Falls to San AntonioDiscover carefully curated flight deals from Idaho Falls to San Antonio that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 23, 2026.
Discover carefully curated flight deals from Idaho Falls to San Antonio that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 23, 2026.
This United Airlines deal was found by Cheapflights users on 9/18. 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.
Fri 3/195:57 pm -
1 stop4h 40m
Sat 3/275:20 am -
1 stop5h 08m
Deal found 9/18![United Airlines logo]()
$359
This Delta deal was found by Cheapflights users on 9/22. 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.
Wed 10/76:00 am -
1 stop6h 40m
Sun 10/116:00 pm -
1 stop5h 10m
Deal found 9/22![Delta logo]()
$429
This United Airlines deal was found by Cheapflights users on 9/22. 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.
Sat 1/232:35 pm -
1 stop5h 32m
Tue 1/268:55 am -
1 stop5h 40m
Deal found 9/22![United Airlines logo]()
$469
Last-minute flights from Idaho Falls to San AntonioDiscover last-minute flight deals from Idaho Falls to San Antonio. Data last updated September 23, 2026 and is based on user searches.
Discover last-minute flight deals from Idaho Falls to San Antonio. Data last updated September 23, 2026 and is based on user searches.
This American Airlines deal was found by Cheapflights users on 9/21. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/221:58 pm -
1 stop8h 57m
Tue 9/294:27 pm -
1 stop5h 53m
Deal found 9/21![American Airlines logo]()
$507
This Delta deal was found by Cheapflights users on 9/21. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/221:05 pm -
2 stops10h 08m
Tue 9/296:01 pm -
1 stop5h 21m
Deal found 9/21![Delta logo]()
$519
This Delta deal was found by Cheapflights users on 9/21. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/236:00 am -
2 stops7h 49m
Wed 9/307:05 am -
2 stops12h 12m
Deal found 9/21![Delta logo]()
$600
This Delta deal was found by Cheapflights users on 9/22. 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.
Wed 10/76:00 am -
1 stop6h 40m
Sun 10/116:00 pm -
1 stop5h 10m
Deal found 9/22![Delta logo]()
$429
This Kiwi.com deal was found by Cheapflights users on 9/18. 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 10/2510:02 am -
2 stops34h 47m
Sun 11/110:29 pm -
1 stop15h 07m
Deal found 9/18![Multiple Airlines logo]()
$614
This United Airlines deal was found by Cheapflights users on 9/18. 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 10/252:35 pm -
1 stop5h 18m
Sat 10/318:56 am -
1 stop5h 32m
Deal found 9/18![United Airlines logo]()
$631
This Delta deal was found by Cheapflights users on 9/20. 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 10/306:56 pm -
1 stop4h 34m
Sun 11/16:35 am -
1 stop6h 47m
Deal found 9/20![Delta logo]()
$359
This United Airlines deal was found by Cheapflights users on 9/20. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/302:35 pm -
2 stops7h 16m
Sun 11/15:30 am -
2 stops8h 58m
Deal found 9/20![United Airlines logo]()
$460
One-way flights from Idaho Falls to San AntonioSearch for one-way flight options from Idaho Falls to San Antonio. Find affordable one-way fares based on user searches. Data last updated September 23, 2026.
Search for one-way flight options from Idaho Falls to San Antonio. Find affordable one-way fares based on user searches. Data last updated September 23, 2026.
This American Airlines deal was found by Cheapflights users on 9/18. 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.
Sat 11/286:44 am -
1 stop6h 24m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/18![American Airlines logo]()
$424
This United Airlines deal was found by Cheapflights users on 9/22. 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 10/135:51 pm -
1 stop5h 07m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/22![United Airlines logo]()
$514
This Alaska Airlines deal was found by Cheapflights users on 9/19. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/281:55 pm -
2 stops25h 10m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/19![Alaska Airlines logo]()
$611
This Kiwi.com deal was found by Cheapflights users on 9/19. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/289:11 am -
3 stops33h 22m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/19![Multiple Airlines logo]()
$636
This United Airlines deal was found by Cheapflights users on 9/18. 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.
Sat 11/2810:35 am -
2 stops11h 16m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/18![United Airlines logo]()
$677
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 September 23, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $359 (United Airlines) |
Popular in | March |
Cheapest in | April |
Average price | $634 |
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 7,457,451 searches. Data last updated September 23, 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
Cheapest round-trip
Idaho FallsSan Antonio
IDA Idaho Falls Fanning Field - SAT San Antonio
IDASAT
Idaho Falls Fanning Field
Fri 3/19
5:57 pm-11:37 pm
1 stop4h 40m
San Antonio
Sat 3/27
5:20 am-9:28 am
1 stop5h 08m
$359
Idaho FallsSan Antonio
IDA Idaho Falls Fanning Field - SAT San Antonio
IDASAT
Idaho Falls Fanning Field
Sat 11/28
6:44 am-2:08 pm
1 stop6h 24m
San Antonio
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$424
Idaho FallsSan Antonio
IDA Idaho Falls Fanning Field - SAT San Antonio
IDASAT
Idaho Falls Fanning Field
Wed 10/7
6:00 am-1:40 pm
1 stop6h 40m
San Antonio
Sun 10/11
6:00 pm-10:10 pm
1 stop5h 10m
$429
Idaho FallsSan Antonio
IDA Idaho Falls Fanning Field - SAT San Antonio
IDASAT
Idaho Falls Fanning Field
Sat 1/23
2:35 pm-9:07 pm
1 stop5h 32m
San Antonio
Tue 1/26
8:55 am-1:35 pm
1 stop5h 40m
$469
Quickest round-trip
Idaho FallsSan Antonio
IDA Idaho Falls Fanning Field - SAT San Antonio
IDASAT
Idaho Falls Fanning Field
Tue 10/13
5:51 pm-11:58 pm
1 stop5h 07m
San Antonio
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$514
Idaho FallsSan Antonio
IDA Idaho Falls Fanning Field - SAT San Antonio
IDASAT
Idaho Falls Fanning Field
Sat 11/28
1:55 pm-4:05 pm
2 stops25h 10m
San Antonio
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$611
Idaho FallsSan Antonio
IDA Idaho Falls Fanning Field - SAT San Antonio
IDASAT
Idaho Falls Fanning Field
Sat 11/28
10:35 am-10:51 pm
2 stops11h 16m
San Antonio
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$677
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 September.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars |
- 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.
IDA-SAT
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.
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 September 23, 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.
Boarding
8.1
Food
7.2
Overall
7.8
Entertainment
7.8
Comfort
7.8
Crew
8.5
Reviews
1 / 20
4.0
OkayJennifer,Sep 2026
ORD - LGA
Boarding
8.1
Food
7.2
Overall
7.8
Entertainment
7.8
Comfort
7.8
Crew
8.5
Reviews
1 / 20
4.0
OkayJennifer,Sep 2026
ORD - LGA
Boarding
8.1
Food
7.2
Overall
7.8
Entertainment
7.8
Comfort
7.8
Crew
8.5
Reviews
1 / 20
4.0
OkayJennifer,Sep 2026
ORD - LGA
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.
Traveling to a place near San Antonio?
Book flights to San Antonio if you plan to visit one of these locationsNew Braunfels
Kerrville
Browse thousands of different options on Cheapflights for your next trip
Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.
Alternative routes
Complete your trip
Flights by cabin class
Other flight options
Other flights from Idaho Falls
Popular flights
San Antonio flight routes
Alternative routes for Idaho Falls to San Antonio
See prices for flight routes from nearby airports that may be better suited for you.
Complete your trip
Complete your trip to San Antonio by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Idaho Falls to San Antonio by cabin class
Find flights from Idaho Falls to San Antonio, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Idaho Falls and San Antonio flights
Browse other Idaho Falls and San Antonio flight options. Last updated on September 23, 2026.
Other flights from Idaho Falls
Browse through other flights departing from Idaho Falls. Flights are based on user searches made on Cheapflights and were last updated on September 23, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Other flights to San Antonio
Explore flights to San Antonio departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on September 23, 2026.
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 7,457,451 searches. Data last updated September 23, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$308 | Average$469 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$362 | Average$442 | FlexibilityNo cancel fee | On-time69% |