$136+ Cheap flights from Idaho to San Antonio (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 9/10. Fares are subject to change and may not be available on all flights or dates of travel.
BOI — SAT
Sep 20 — Sep 271
Round-trip
1 adult, Economy
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Find cheap flights from Idaho 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 to San Antonio
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Cheapest flights from Idaho to San AntonioExplore the most affordable flight options available from Idaho to San Antonio. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 21, 2026.
Explore the most affordable flight options available from Idaho to San Antonio. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 21, 2026.
This CheapOair deal was found by Cheapflights users on 8/18. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/282:50 pm -
1 stop22h 30m
Wed 9/303:19 pm -
1 stop23h 36m
Deal found 8/18![Frontier logo]()
$247
This CheapOair deal was found by Cheapflights users on 8/21. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/222:50 pm -
1 stop5h 59m
Wed 10/2810:29 pm -
1 stop16h 25m
Deal found 8/21![Frontier logo]()
$267
This Kiwi.com deal was found by Cheapflights users on 8/18. 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.
Tue 9/81:24 pm -
1 stop29h 01m
Wed 9/233:19 pm -
1 stop23h 36m
Deal found 8/18![Frontier logo]()
$272
This CheapOair deal was found by Cheapflights users on 8/20. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/282:50 pm -
1 stop22h 30m
Thu 10/112:39 pm -
1 stop26h 16m
Deal found 8/20![Frontier logo]()
$280
This CheapOair deal was found by Cheapflights users on 8/19. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/272:50 pm -
1 stop19h 54m
Wed 9/303:19 pm -
1 stop23h 36m
Deal found 8/19![Frontier logo]()
$305
This CheapOair deal was found by Cheapflights users on 8/17. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/172:50 pm -
1 stop19h 54m
Wed 9/233:19 pm -
1 stop23h 36m
Deal found 8/17![Frontier logo]()
$307
This CheapOair deal was found by Cheapflights users on 8/20. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/172:50 pm -
1 stop19h 54m
Sun 9/2012:39 pm -
1 stop26h 16m
Deal found 8/20![Frontier logo]()
$314
This CheapOair deal was found by Cheapflights users on 8/19. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/272:50 pm -
1 stop19h 54m
Thu 10/112:39 pm -
1 stop26h 16m
Deal found 8/19![Frontier logo]()
$318
This Delta deal was found by Cheapflights users on 8/19. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/236:56 pm -
1 stop4h 34m
Wed 10/286:00 pm -
1 stop5h 10m
Deal found 8/19![Delta logo]()
$339
This American Airlines deal was found by Cheapflights users on 8/20. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/512:44 pm -
1 stop8h 10m
Sat 9/128:54 am -
1 stop6h 19m
Deal found 8/20![American Airlines logo]()
$353
This American Airlines deal was found by Cheapflights users on 8/20. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/512:44 pm -
1 stop7h 16m
Wed 9/912:41 pm -
2 stops8h 58m
Deal found 8/20![American Airlines logo]()
$358
This American Airlines deal was found by Cheapflights users on 8/20. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/2312:51 pm -
1 stop7h 13m
Wed 12/29:22 am -
2 stops9h 17m
Deal found 8/20![American Airlines logo]()
$370
Best flights from Idaho to San AntonioDiscover carefully curated flight deals from Idaho to San Antonio that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 21, 2026.
Discover carefully curated flight deals from Idaho to San Antonio that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 21, 2026.
This Delta deal was found by Cheapflights users on 8/19. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/236:56 pm -
1 stop4h 34m
Wed 10/286:00 pm -
1 stop5h 10m
Deal found 8/19![Delta logo]()
$339
This Southwest deal was found by Cheapflights users on 8/18. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/141:25 pm -
2 stops9h 15m
Sat 10/176:10 am -
2 stops7h 45m
Deal found 8/18![Southwest logo]()
$353
This American Airlines deal was found by Cheapflights users on 8/20. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/55:40 am -
1 stop8h 10m
Wed 9/94:27 pm -
1 stop5h 58m
Deal found 8/20![American Airlines logo]()
$353
This United Airlines deal was found by Cheapflights users on 8/18. 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.
Wed 9/23:54 pm -
1 stop6h 03m
Sun 9/69:10 am -
1 stop7h 56m
Deal found 8/18![United Airlines logo]()
$383
This Alaska Airlines deal was found by Cheapflights users on 8/20. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 1/239:08 am -
2 stops12h 52m
Tue 1/2610:18 am -
2 stops13h 35m
Deal found 8/20![Alaska Airlines logo]()
$450
This Delta deal was found by Cheapflights users on 8/20. 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.
Wed 9/1611:12 am -
1 stop5h 00m
Tue 9/227:05 am -
1 stop8h 39m
Deal found 8/20![Delta logo]()
$356
This American Airlines deal was found by Cheapflights users on 8/20. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/55:20 am -
1 stop6h 01m
Sat 9/1212:41 pm -
2 stops8h 58m
Deal found 8/20![American Airlines logo]()
$358
This Delta deal was found by Cheapflights users on 8/16. 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.
Thu 10/224:00 pm -
1 stop7h 13m
Wed 10/287:50 am -
1 stop7h 57m
Deal found 8/16![Delta logo]()
$356
This Southwest deal was found by Cheapflights users on 8/17. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/95:15 pm -
1 stop6h 20m
Mon 10/129:20 pm -
1 stop5h 20m
Deal found 8/17![Southwest logo]()
$396
This United Airlines deal was found by Cheapflights users on 8/17. 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 9/295:51 pm -
1 stop5h 07m
Sun 10/45:30 am -
1 stop5h 23m
Deal found 8/17![United Airlines logo]()
$399
This American Airlines deal was found by Cheapflights users on 8/16. 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.
Thu 9/101:53 pm -
2 stops8h 02m
Wed 9/163:38 pm -
1 stop6h 01m
Deal found 8/16![American Airlines logo]()
$382
This Southwest deal was found by Cheapflights users on 8/16. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/305:30 am -
2 stops8h 45m
Tue 11/35:40 pm -
1 stop6h 45m
Deal found 8/16![Southwest logo]()
$400
This United Airlines deal was found by Cheapflights users on 8/18. 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.
Thu 9/34:04 pm -
1 stop6h 53m
Mon 9/75:30 am -
1 stop5h 21m
Deal found 8/18![United Airlines logo]()
$409
This Southwest deal was found by Cheapflights users on 8/19. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/52:30 pm -
2 stops8h 50m
Mon 10/128:35 pm -
1 stop5h 55m
Deal found 8/19![Southwest logo]()
$400
This Delta deal was found by Cheapflights users on 8/20. 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.
Wed 9/307:05 am -
1 stop6h 44m
Mon 10/56:45 am -
2 stops18h 13m
Deal found 8/20![Delta logo]()
$413
This United Airlines deal was found by Cheapflights users on 8/18. 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.
Tue 10/202:28 pm -
1 stop5h 14m
Sat 10/249:00 am -
1 stop5h 24m
Deal found 8/18![United Airlines logo]()
$429
This Southwest deal was found by Cheapflights users on 8/17. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/156:00 am -
2 stops7h 35m
Tue 9/2212:55 pm -
2 stops7h 55m
Deal found 8/17![Southwest logo]()
$407
This United Airlines deal was found by Cheapflights users on 8/20. 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.
Sat 1/232:35 pm -
1 stop5h 32m
Tue 1/268:55 am -
1 stop5h 40m
Deal found 8/20![United Airlines logo]()
$429
This Delta deal was found by Cheapflights users on 8/16. 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.
Wed 9/2310:34 am -
2 stops12h 39m
Sat 9/267:20 am -
1 stop8h 24m
Deal found 8/16![Delta logo]()
$433
This Southwest deal was found by Cheapflights users on 8/16. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/1010:55 am -
2 stops9h 05m
Wed 9/164:20 pm -
2 stops8h 40m
Deal found 8/16![Southwest logo]()
$413
This United Airlines deal was found by Cheapflights users on 8/16. 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.
Sat 10/2412:26 pm -
1 stop9h 24m
Tue 10/275:30 am -
2 stops9h 15m
Deal found 8/16![United Airlines logo]()
$438
This Delta deal was found by Cheapflights users on 8/16. 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.
Fri 10/309:15 am -
2 stops12h 58m
Tue 11/312:30 pm -
2 stops12h 36m
Deal found 8/16![Delta logo]()
$445
This Southwest deal was found by Cheapflights users on 8/20. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/54:45 pm -
1 stop7h 35m
Fri 10/99:20 pm -
1 stop5h 20m
Deal found 8/20![Southwest logo]()
$423
This Delta deal was found by Cheapflights users on 8/16. 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.
Wed 9/911:44 am -
2 stops11h 03m
Wed 9/166:45 am -
1 stop4h 46m
Deal found 8/16![Delta logo]()
$448
This Southwest deal was found by Cheapflights users on 8/16. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/275:40 pm -
1 stop5h 35m
Tue 9/295:55 pm -
1 stop5h 35m
Deal found 8/16![Southwest logo]()
$430
This United Airlines deal was found by Cheapflights users on 8/16. 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.
Fri 12/181:01 pm -
1 stop5h 38m
Sat 1/304:45 pm -
1 stop5h 17m
Deal found 8/16![United Airlines logo]()
$480
This Delta deal was found by Cheapflights users on 8/20. 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 9/185:55 pm -
1 stop5h 36m
Tue 9/2212:29 pm -
1 stop5h 21m
Deal found 8/20![Delta logo]()
$484
This United Airlines deal was found by Cheapflights users on 8/18. 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.
Thu 1/2112:30 pm -
1 stop9h 28m
Mon 1/254:45 pm -
1 stop5h 17m
Deal found 8/18![United Airlines logo]()
$539
This Delta deal was found by Cheapflights users on 8/20. 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 9/2512:14 pm -
2 stops9h 59m
Sat 9/266:45 am -
1 stop6h 49m
Deal found 8/20![Delta logo]()
$490
This United Airlines deal was found by Cheapflights users on 8/18. 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 10/249:04 am -
1 stop7h 42m
Wed 10/288:56 am -
1 stop5h 57m
Deal found 8/18![United Airlines logo]()
$555
Last-minute flights from Idaho to San AntonioDiscover last-minute flight deals from Idaho to San Antonio. Data last updated August 21, 2026 and is based on user searches.
Discover last-minute flight deals from Idaho to San Antonio. Data last updated August 21, 2026 and is based on user searches.
This United Airlines deal was found by Cheapflights users on 8/18. 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.
Wed 9/23:54 pm -
1 stop6h 03m
Sun 9/69:10 am -
1 stop7h 56m
Deal found 8/18![United Airlines logo]()
$383
This American Airlines deal was found by Cheapflights users on 8/20. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/512:44 pm -
1 stop8h 10m
Sat 9/128:54 am -
1 stop6h 19m
Deal found 8/20![American Airlines logo]()
$353
This Kiwi.com deal was found by Cheapflights users on 8/18. 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.
Tue 9/81:24 pm -
1 stop29h 01m
Wed 9/233:19 pm -
1 stop23h 36m
Deal found 8/18![Frontier logo]()
$272
This American Airlines deal was found by Cheapflights users on 8/16. 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.
Thu 9/106:30 am -
1 stop8h 06m
Wed 9/163:38 pm -
1 stop6h 01m
Deal found 8/16![American Airlines logo]()
$377
This CheapOair deal was found by Cheapflights users on 8/19. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/112:50 pm -
1 stop21h 58m
Thu 9/1712:39 pm -
1 stop26h 16m
Deal found 8/19![Frontier logo]()
$324
This CheapOair deal was found by Cheapflights users on 8/17. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/172:50 pm -
1 stop19h 54m
Wed 9/233:19 pm -
1 stop23h 36m
Deal found 8/17![Frontier logo]()
$307
This CheapOair deal was found by Cheapflights users on 8/20. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/172:50 pm -
1 stop19h 54m
Sun 9/2012:39 pm -
1 stop26h 16m
Deal found 8/20![Frontier logo]()
$314
This CheapOair deal was found by Cheapflights users on 8/19. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/272:50 pm -
1 stop19h 54m
Wed 9/303:19 pm -
1 stop23h 36m
Deal found 8/19![Frontier logo]()
$305
This CheapOair deal was found by Cheapflights users on 8/19. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/272:50 pm -
1 stop19h 54m
Thu 10/112:39 pm -
1 stop26h 16m
Deal found 8/19![Frontier logo]()
$318
This CheapOair deal was found by Cheapflights users on 8/18. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/282:50 pm -
1 stop22h 30m
Wed 9/303:19 pm -
1 stop23h 36m
Deal found 8/18![Frontier logo]()
$247
This CheapOair deal was found by Cheapflights users on 8/20. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/282:50 pm -
1 stop22h 30m
Thu 10/112:39 pm -
1 stop26h 16m
Deal found 8/20![Frontier logo]()
$280
This Delta deal was found by Cheapflights users on 8/18. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/285:14 pm -
1 stop5h 17m
Fri 10/24:50 pm -
1 stop8h 58m
Deal found 8/18![Delta logo]()
$395
One-way flights from Idaho to San AntonioSearch for one-way flight options from Idaho to San Antonio. Find affordable one-way fares based on user searches. Data last updated August 21, 2026.
Search for one-way flight options from Idaho to San Antonio. Find affordable one-way fares based on user searches. Data last updated August 21, 2026.
This CheapOair deal was found by Cheapflights users on 8/19. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/102:50 pm -
1 stop19h 54m
Deal found 8/19![Frontier logo]()
$136
This Kiwi.com deal was found by Cheapflights users on 8/16. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/282:50 pm -
1 stop22h 30m
Deal found 8/16![Frontier logo]()
$154
This CheapOair deal was found by Cheapflights users on 8/20. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/182:50 pm -
1 stop21h 58m
Deal found 8/20![Frontier logo]()
$163
This CheapOair deal was found by Cheapflights users on 8/17. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/83:52 pm -
1 stop18h 56m
Deal found 8/17![Frontier logo]()
$170
This Delta deal was found by Cheapflights users on 8/17. 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 10/274:00 pm -
1 stop7h 13m
Deal found 8/17![Delta logo]()
$172
This United Airlines deal was found by Cheapflights users on 8/20. 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 9/116:15 am -
2 stops9h 40m
Deal found 8/20![United Airlines logo]()
$177
This United Airlines deal was found by Cheapflights users on 8/17. 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 9/21:37 pm -
1 stop5h 15m
Deal found 8/17![United Airlines logo]()
$177
This CheapOair deal was found by Cheapflights users on 8/20. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/112:50 pm -
1 stop20h 25m
Deal found 8/20![Frontier logo]()
$180
This Southwest deal was found by Cheapflights users on 8/17. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/26:15 am -
2 stops9h 10m
Deal found 8/17![Southwest logo]()
$182
This Delta deal was found by Cheapflights users on 8/18. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/179:55 am -
1 stop5h 19m
Deal found 8/18![Delta logo]()
$189
This Expedia deal was found by Cheapflights users on 8/18. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/3012:24 pm -
1 stop6h 07m
Deal found 8/18![Frontier logo]()
$190
This Delta deal was found by Cheapflights users on 8/17. 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 11/65:04 pm -
1 stop5h 26m
Deal found 8/17![Delta logo]()
$207
Find flight deals from Idaho to San Antonio
Keep the following information in mind while searching for Idaho to San Antonio flight deals. Data was last updated August 21, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $247 (CheapOair) |
One-way from | $136 (CheapOair) |
Popular in | August |
Cheapest in | January |
Average price | $625 |
Cheapflights Fare Finder
Customize your flight search to find flights from Idaho 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 August 21, 2026.
Use the filters below to find and compare flights from Idaho to San Antonio that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
Quickest round-trip
Idaho FallsSan Antonio
IDA Idaho Falls Fanning Field - SAT San Antonio
IDASAT
Idaho Falls Fanning Field
Fri 10/23
6:56 pm-12:30 am
1 stop4h 34m
San Antonio
Wed 10/28
6:00 pm-10:10 pm
1 stop5h 10m
$339
BoiseSan Antonio
BOI Boise Air Term. Gowen Fld - SAT San Antonio
BOISAT
Boise Air Term. Gowen Fld
Wed 10/14
1:25 pm-11:40 pm
2 stops9h 15m
San Antonio
Sat 10/17
6:10 am-12:55 pm
2 stops7h 45m
$353
SpokaneSan Antonio
GEG Spokane - SAT San Antonio
GEGSAT
Spokane
Sat 9/5
5:40 am-3:50 pm
1 stop8h 10m
San Antonio
Wed 9/9
4:27 pm-8:25 pm
1 stop5h 58m
$353
BoiseSan Antonio
BOI Boise Air Term. Gowen Fld - SAT San Antonio
BOISAT
Boise Air Term. Gowen Fld
Wed 9/16
11:12 am-5:12 pm
1 stop5h 00m
San Antonio
Tue 9/22
7:05 am-2:44 pm
1 stop8h 39m
$356
BoiseSan Antonio
BOI Boise Air Term. Gowen Fld - SAT San Antonio
BOISAT
Boise Air Term. Gowen Fld
Thu 10/22
4:00 pm-12:13 am
1 stop7h 13m
San Antonio
Wed 10/28
7:50 am-2:47 pm
1 stop7h 57m
$356
SpokaneSan Antonio
GEG Spokane - SAT San Antonio
GEGSAT
Spokane
Sat 9/5
5:20 am-1:21 pm
1 stop6h 01m
San Antonio
Sat 9/12
12:41 pm-7:39 pm
2 stops8h 58m
$358
SpokaneSan Antonio
GEG Spokane - SAT San Antonio
GEGSAT
Spokane
Thu 9/10
1:53 pm-11:55 pm
2 stops8h 02m
San Antonio
Wed 9/16
3:38 pm-7:39 pm
1 stop6h 01m
$382
SpokaneSan Antonio
GEG Spokane - SAT San Antonio
GEGSAT
Spokane
Wed 9/2
3:54 pm-11:57 pm
1 stop6h 03m
San Antonio
Sun 9/6
9:10 am-3:06 pm
1 stop7h 56m
$383
BoiseSan Antonio
BOI Boise Air Term. Gowen Fld - SAT San Antonio
BOISAT
Boise Air Term. Gowen Fld
Fri 10/9
5:15 pm-12:35 am
1 stop6h 20m
San Antonio
Mon 10/12
9:20 pm-1:40 am
1 stop5h 20m
$396
Idaho FallsSan Antonio
IDA Idaho Falls Fanning Field - SAT San Antonio
IDASAT
Idaho Falls Fanning Field
Tue 9/29
5:51 pm-11:58 pm
1 stop5h 07m
San Antonio
Sun 10/4
5:30 am-9:53 am
1 stop5h 23m
$399
Showing 1-10 of 54 resultsSorted by cheapest first
Best time to book a flight from Idaho to San Antonio
Have a flexible travel schedule? Discover the best time to fly to San Antonio from Idaho with our price prediction graph.
BOI-SAT
IDA-SAT
GEG-SAT
LWS-SAT
PIH-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.
Cheapflights Insights
Everything you need to know about your flight from Idaho to San Antonio
USID-SAT
BOI-SAT
IDA-SAT
GEG-SAT
LWS-SAT
What is the cheapest month to book a flight from Idaho to San Antonio?
Currently, April is the cheapest month in which you can book a flight from Idaho to San Antonio (average of $368). Flying from Idaho to San Antonio in August is currently the most expensive (average of $625). 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 to San Antonio?
Airfare is below average for this route at the moment.
Idaho to San Antonio flights typically cost between $388 and $546 in September.The cheapest round-trip price found within the last 5 days was $247 on Frontier (Sep 28-Sep 30).
How far ahead should I book a flight from Idaho to San Antonio?
Booking 57 days in advance of your planned departure date is, on average, the best time to get cheap flights from Idaho to San Antonio. The general trend is that the closer you book to the departure date, the more expensive your flight will be.
Related info for your journey
Find useful and relevant information for your journey from Idaho 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
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Alternative routes for Idaho to San Antonio
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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 to San Antonio by cabin class
Find flights from Idaho to San Antonio, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Idaho and San Antonio flights
Browse other Idaho and San Antonio flight options. Last updated on August 21, 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 August 21, 2026.
Idaho to San Antonio flights
Consider these flights traveling from Idaho to San Antonio.
Top 5 airlines flying from Idaho to San Antonio
Discover the top 5 airlines that operate flights from Idaho 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 August 21, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$196 | Average$468 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$208 | Average$453 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$290 | Average$456 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$293 | Average$508 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$303 | Average$663 | FlexibilityNo cancel fee | On-time75% |