$131+ 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 4/5. Fares are subject to change and may not be available on all flights or dates of travel.
BOI — SAT
Apr 25 — May 21
Round-trip
1 adult, Economy
We work with more than 300 partners to bring you better travel deals
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
Cheapest
Best
Last-minute
One-way
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 March 26, 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 March 26, 2026.
This Frontier deal was found by Cheapflights users on 3/22. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/512:03 pm
BOI
- SAT
1 stop11h 16m
Frontier
Thu 4/96:45 am
SAT
- BOI
1 stop5h 23m
Frontier
Deal found 3/22![Frontier logo]()
$200
This CheapOair deal was found by Cheapflights users on 3/22. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/1212:03 pm
BOI
- SAT
1 stop11h 16m
Frontier
Sat 4/184:04 pm
SAT
- BOI
1 stop20h 04m
Frontier
Deal found 3/22![Frontier logo]()
$216
This Frontier deal was found by Cheapflights users on 3/25. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/911:06 am
GEG
- SAT
1 stop11h 13m
Frontier
Sun 4/126:45 am
SAT
- GEG
1 stop5h 36m
Frontier
Deal found 3/25![Frontier logo]()
$255
This Delta deal was found by Cheapflights users on 3/26. 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 5/206:41 pm
BOI
- SAT
1 stop4h 32m
Delta
Tue 5/266:35 am
SAT
- BOI
1 stop6h 21m
Delta
Deal found 3/26![Delta logo]()
$263
This Southwest deal was found by Cheapflights users on 3/24. 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 4/215:15 pm
BOI
- SAT
1 stop5h 15m
Southwest
Tue 4/284:25 pm
SAT
- BOI
2 stops8h 05m
Southwest
Deal found 3/24![Southwest logo]()
$268
This United Airlines deal was found by Cheapflights users on 3/25. 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 6/45:46 pm
BOI
- SAT
1 stop5h 13m
United Airlines
Tue 6/95:30 am
SAT
- BOI
1 stop5h 15m
United Airlines
Deal found 3/25![United Airlines logo]()
$285
This Delta deal was found by Cheapflights users on 3/26. 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 4/298:30 am
BOI
- SAT
1 stop7h 40m
Delta
Sat 5/26:02 pm
SAT
- BOI
1 stop4h 54m
Delta
Deal found 3/26![Delta logo]()
$290
This Kiwi.com deal was found by Cheapflights users on 3/25. 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 4/135:11 pm
GEG
- SAT
2 stops19h 58m
Frontier
Wed 4/294:49 pm
SAT
- GEG
1 stop20h 00m
Frontier
Deal found 3/25![Frontier logo]()
$290
This Southwest deal was found by Cheapflights users on 3/26. 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 6/44:25 pm
BOI
- SAT
1 stop5h 40m
Southwest
Tue 6/95:55 pm
SAT
- BOI
2 stops7h 30m
Southwest
Deal found 3/26![Southwest logo]()
$295
This Delta deal was found by Cheapflights users on 3/23. 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 4/222:18 pm
BOI
- SAT
1 stop9h 28m
Delta
Thu 4/236:39 am
SAT
- BOI
1 stop8h 47m
Delta
Deal found 3/23![Delta logo]()
$297
This Southwest deal was found by Cheapflights users on 3/26. 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.
Sat 5/27:05 am
BOI
- SAT
2 stops8h 55m
Southwest
Wed 5/64:55 pm
SAT
- BOI
2 stops8h 30m
Southwest
Deal found 3/26![Southwest logo]()
$300
This Kiwi.com deal was found by Cheapflights users on 3/25. 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 4/2011:45 am
GEG
- SAT
2 stops25h 24m
Multiple Airlines
Wed 4/224:49 pm
SAT
- GEG
1 stop20h 00m
Multiple Airlines
Deal found 3/25![Multiple Airlines logo]()
$301
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 March 26, 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 March 26, 2026.
This Delta deal was found by Cheapflights users on 3/24. 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 4/227:05 am
BOI
- SAT
1 stop6h 28m
Delta
Wed 4/297:38 am
SAT
- BOI
1 stop8h 25m
Delta
Deal found 3/24![Delta logo]()
$263
This Southwest deal was found by Cheapflights users on 3/26. 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 5/65:10 am
GEG
- SAT
2 stops7h 55m
Southwest
Wed 5/136:50 am
SAT
- GEG
1 stop8h 15m
Southwest
Deal found 3/26![Southwest logo]()
$310
This United Airlines deal was found by Cheapflights users on 3/24. 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 5/126:00 am
GEG
- SAT
2 stops12h 49m
United Airlines
Fri 5/154:35 pm
SAT
- GEG
1 stop6h 41m
United Airlines
Deal found 3/24![United Airlines logo]()
$374
This Alaska Airlines deal was found by Cheapflights users on 3/24. 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 5/21:53 pm
BOI
- SAT
1 stop6h 49m
Alaska Airlines
Wed 5/68:15 am
SAT
- BOI
1 stop5h 48m
Alaska Airlines
Deal found 3/24![Alaska Airlines logo]()
$407
This Delta deal was found by Cheapflights users on 3/24. 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 4/2911:35 pm
BOI
- SAT
1 stop9h 11m
Delta
Sat 5/26:20 am
SAT
- BOI
1 stop7h 47m
Delta
Deal found 3/24![Delta logo]()
$290
This Southwest deal was found by Cheapflights users on 3/26. 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 4/201:30 pm
GEG
- SAT
1 stop8h 35m
Southwest
Wed 4/224:55 pm
SAT
- GEG
2 stops8h 30m
Southwest
Deal found 3/26![Southwest logo]()
$359
This Delta deal was found by Cheapflights users on 3/23. 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 4/286:58 pm
IDA
- SAT
1 stop4h 27m
Delta
Sat 5/26:02 pm
SAT
- IDA
1 stop5h 38m
Delta
Deal found 3/23![Delta logo]()
$329
This United Airlines deal was found by Cheapflights users on 3/24. 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 6/125:54 pm
IDA
- SAT
1 stop5h 05m
United Airlines
Tue 6/165:30 am
SAT
- IDA
1 stop5h 20m
United Airlines
Deal found 3/24![United Airlines logo]()
$380
This United Airlines deal was found by Cheapflights users on 3/24. 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 4/297:11 am
BOI
- SAT
2 stops9h 32m
United Airlines
Sat 5/28:48 am
SAT
- BOI
2 stops14h 28m
United Airlines
Deal found 3/24![United Airlines logo]()
$400
This Southwest deal was found by Cheapflights users on 3/23. 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 4/147:00 am
GEG
- SAT
1 stop8h 00m
Southwest
Tue 4/147:15 pm
SAT
- GEG
1 stop6h 10m
Southwest
Deal found 3/23![Southwest logo]()
$401
This Delta deal was found by Cheapflights users on 3/24. 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 5/133:23 pm
BOI
- SAT
1 stop7h 25m
Delta
Sun 5/175:25 am
SAT
- BOI
1 stop8h 18m
Delta
Deal found 3/24![Delta logo]()
$365
This United Airlines deal was found by Cheapflights users on 3/21. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/210:41 am
BOI
- SAT
1 stop5h 14m
United Airlines
Tue 6/95:30 am
SAT
- BOI
1 stop5h 15m
United Airlines
Deal found 3/21![United Airlines logo]()
$402
This Southwest deal was found by Cheapflights users on 3/25. 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 6/1010:20 am
GEG
- SAT
2 stops12h 10m
Southwest
Fri 6/129:40 pm
SAT
- GEG
1 stop5h 40m
Southwest
Deal found 3/25![Southwest logo]()
$402
This Delta deal was found by Cheapflights users on 3/26. 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 4/247:15 am
SUN
- SAT
1 stop5h 23m
Delta
Fri 5/16:05 pm
SAT
- SUN
1 stop4h 37m
Delta
Deal found 3/26![Delta logo]()
$376
This Southwest deal was found by Cheapflights users on 3/24. 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 5/1210:55 am
GEG
- SAT
2 stops8h 45m
Southwest
Fri 5/156:45 pm
SAT
- GEG
2 stops7h 45m
Southwest
Deal found 3/24![Southwest logo]()
$408
This United Airlines deal was found by Cheapflights users on 3/25. 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 5/25:00 am
GEG
- SAT
1 stop5h 56m
United Airlines
Wed 5/64:35 pm
SAT
- GEG
1 stop6h 41m
United Airlines
Deal found 3/25![United Airlines logo]()
$411
This Delta deal was found by Cheapflights users on 3/25. 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 4/305:11 pm
JAC
- SAT
1 stop6h 14m
Delta
Thu 5/712:35 pm
SAT
- JAC
1 stop5h 24m
Delta
Deal found 3/25![Delta logo]()
$391
This Southwest deal was found by Cheapflights users on 3/21. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/24:05 pm
BOI
- SAT
1 stop5h 00m
Southwest
Tue 6/95:55 pm
SAT
- BOI
2 stops7h 30m
Southwest
Deal found 3/21![Southwest logo]()
$412
This United Airlines deal was found by Cheapflights users on 3/24. 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 5/82:30 pm
SUN
- SAT
1 stop5h 19m
United Airlines
Tue 5/128:48 am
SAT
- SUN
1 stop5h 50m
United Airlines
Deal found 3/24![United Airlines logo]()
$421
This Delta deal was found by Cheapflights users on 3/22. 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.
Fri 5/87:45 am
JAC
- SAT
1 stop4h 52m
Delta
Fri 5/155:55 pm
SAT
- JAC
1 stop4h 34m
Delta
Deal found 3/22![Delta logo]()
$391
This United Airlines deal was found by Cheapflights users on 3/22. 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 4/252:24 pm
SUN
- SAT
1 stop5h 18m
United Airlines
Tue 4/288:45 am
SAT
- SUN
1 stop5h 50m
United Airlines
Deal found 3/22![United Airlines logo]()
$431
This Delta deal was found by Cheapflights users on 3/22. 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.
Mon 4/63:30 pm
SUN
- SAT
1 stop7h 46m
Delta
Fri 4/105:10 am
SAT
- SUN
2 stops10h 39m
Delta
Deal found 3/22![Delta logo]()
$416
This Southwest deal was found by Cheapflights users on 3/24. 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 5/12:50 pm
GEG
- SAT
1 stop6h 05m
Southwest
Sun 5/37:05 pm
SAT
- GEG
2 stops8h 15m
Southwest
Deal found 3/24![Southwest logo]()
$461
This Delta deal was found by Cheapflights users on 3/25. 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 5/1311:30 am
IDA
- SAT
1 stop4h 35m
Delta
Sun 5/176:35 am
SAT
- IDA
1 stop5h 12m
Delta
Deal found 3/25![Delta logo]()
$429
This United Airlines deal was found by Cheapflights users on 3/22. 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 9/224:10 pm
IDA
- SAT
1 stop6h 39m
United Airlines
Sat 9/261:42 pm
SAT
- IDA
1 stop4h 40m
United Airlines
Deal found 3/22![United Airlines logo]()
$476
This United Airlines deal was found by Cheapflights users on 3/22. 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.
Thu 6/1810:35 am
IDA
- SAT
1 stop5h 20m
United Airlines
Sun 6/215:30 am
SAT
- IDA
1 stop5h 20m
United Airlines
Deal found 3/22![United Airlines logo]()
$480
This Delta deal was found by Cheapflights users on 3/21. 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.
Mon 5/411:25 am
GEG
- SAT
2 stops11h 00m
Delta
Mon 5/117:30 am
SAT
- GEG
2 stops13h 13m
Delta
Deal found 3/21![Delta logo]()
$452
This Delta deal was found by Cheapflights users on 3/25. 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 4/1310:40 pm
GEG
- SAT
1 stop9h 06m
Delta
Thu 4/305:20 am
SAT
- GEG
1 stop8h 21m
Delta
Deal found 3/25![Delta logo]()
$465
This United Airlines deal was found by Cheapflights users on 3/24. 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 4/182:30 pm
IDA
- SAT
2 stops7h 29m
United Airlines
Sat 4/254:17 pm
SAT
- IDA
2 stops18h 36m
United Airlines
Deal found 3/24![United Airlines logo]()
$522
This Delta deal was found by Cheapflights users on 3/24. 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 5/135:59 pm
JAC
- SAT
1 stop5h 14m
Delta
Sun 5/176:35 am
SAT
- JAC
1 stop5h 13m
Delta
Deal found 3/24![Delta logo]()
$485
Last-minute flights from Idaho to San AntonioDiscover last-minute flight deals from Idaho to San Antonio. Data last updated March 26, 2026 and is based on user searches.
Discover last-minute flight deals from Idaho to San Antonio. Data last updated March 26, 2026 and is based on user searches.
This Frontier deal was found by Cheapflights users on 3/22. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/512:03 pm
BOI
- SAT
1 stop11h 16m
Frontier
Thu 4/96:45 am
SAT
- BOI
1 stop5h 23m
Frontier
Deal found 3/22![Frontier logo]()
$200
This Frontier deal was found by Cheapflights users on 3/25. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/911:06 am
GEG
- SAT
1 stop11h 13m
Frontier
Sun 4/126:45 am
SAT
- GEG
1 stop5h 36m
Frontier
Deal found 3/25![Frontier logo]()
$255
This CheapOair deal was found by Cheapflights users on 3/22. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/1212:03 pm
BOI
- SAT
1 stop11h 16m
Frontier
Sat 4/184:04 pm
SAT
- BOI
1 stop20h 04m
Frontier
Deal found 3/22![Frontier logo]()
$216
This Kiwi.com deal was found by Cheapflights users on 3/25. 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 4/135:11 pm
GEG
- SAT
2 stops19h 58m
Frontier
Wed 4/294:49 pm
SAT
- GEG
1 stop20h 00m
Frontier
Deal found 3/25![Frontier logo]()
$290
This Delta deal was found by Cheapflights users on 3/25. 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 4/1512:36 pm
GEG
- SAT
1 stop10h 10m
Delta
Tue 4/286:39 am
SAT
- GEG
1 stop8h 25m
Delta
Deal found 3/25![Delta logo]()
$305
This Delta deal was found by Cheapflights users on 3/25. 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 4/155:10 pm
GEG
- SAT
1 stop5h 15m
Delta
Sat 5/26:39 am
SAT
- GEG
1 stop8h 25m
Delta
Deal found 3/25![Delta logo]()
$311
This Kiwi.com deal was found by Cheapflights users on 3/25. 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.
Fri 4/1711:45 am
GEG
- SAT
2 stops25h 24m
Multiple Airlines
Wed 4/294:49 pm
SAT
- GEG
1 stop20h 00m
Multiple Airlines
Deal found 3/25![Multiple Airlines logo]()
$313
This Kiwi.com deal was found by Cheapflights users on 3/25. 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 4/2011:45 am
GEG
- SAT
2 stops25h 24m
Multiple Airlines
Wed 4/224:49 pm
SAT
- GEG
1 stop20h 00m
Multiple Airlines
Deal found 3/25![Multiple Airlines logo]()
$301
This Southwest deal was found by Cheapflights users on 3/24. 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 4/212:00 pm
BOI
- SAT
1 stop6h 40m
Southwest
Tue 4/287:15 pm
SAT
- BOI
1 stop6h 10m
Southwest
Deal found 3/24![Southwest logo]()
$263
This Delta deal was found by Cheapflights users on 3/23. 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 4/222:18 pm
BOI
- SAT
1 stop9h 28m
Delta
Thu 4/236:39 am
SAT
- BOI
1 stop8h 47m
Delta
Deal found 3/23![Delta logo]()
$297
This Delta deal was found by Cheapflights users on 3/24. 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 4/2210:41 am
BOI
- SAT
2 stops11h 55m
Delta
Wed 4/297:38 am
SAT
- BOI
1 stop8h 25m
Delta
Deal found 3/24![Delta logo]()
$302
This Delta deal was found by Cheapflights users on 3/26. 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 4/298:30 am
BOI
- SAT
1 stop7h 40m
Delta
Sat 5/26:02 pm
SAT
- BOI
1 stop4h 54m
Delta
Deal found 3/26![Delta logo]()
$290
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 March 26, 2026.
Search for one-way flight options from Idaho to San Antonio. Find affordable one-way fares based on user searches. Data last updated March 26, 2026.
This Expedia deal was found by Cheapflights users on 3/23. 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 4/512:03 pm
BOI
- SAT
1 stop11h 16m
Frontier
Deal found 3/23![Frontier logo]()
$131
This Delta deal was found by Cheapflights users on 3/25. 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 4/2911:35 pm
BOI
- SAT
1 stop9h 11m
Delta
Deal found 3/25![Delta logo]()
$132
This Kiwi.com deal was found by Cheapflights users on 3/23. 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 4/1911:53 am
BOI
- SAT
1 stop25h 22m
Frontier
Deal found 3/23![Frontier logo]()
$135
This United Airlines deal was found by Cheapflights users on 3/25. 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 4/297:11 am
BOI
- SAT
2 stops9h 32m
United Airlines
Deal found 3/25![United Airlines logo]()
$137
This Kiwi.com deal was found by Cheapflights users on 3/23. 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.
Fri 5/811:45 am
GEG
- SAT
2 stops29h 14m
Multiple Airlines
Deal found 3/23![Multiple Airlines logo]()
$154
This Delta deal was found by Cheapflights users on 3/24. 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 4/132:18 pm
BOI
- SAT
1 stop9h 28m
Delta
Deal found 3/24![Delta logo]()
$159
This American Airlines deal was found by Cheapflights users on 3/21. 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.
Sat 4/183:15 pm
GEG
- SAT
1 stop5h 50m
American Airlines
Deal found 3/21![American Airlines logo]()
$159
This American Airlines deal was found by Cheapflights users on 3/21. 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.
Sat 5/162:14 pm
BOI
- SAT
2 stops8h 42m
American Airlines
Deal found 3/21![American Airlines logo]()
$164
This United Airlines deal was found by Cheapflights users on 3/21. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/187:00 am
GEG
- SAT
2 stops12h 03m
United Airlines
Deal found 3/21![United Airlines logo]()
$164
This Kiwi.com deal was found by Cheapflights users on 3/21. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/169:19 pm
GEG
- SAT
2 stops39h 50m
Multiple Airlines
Deal found 3/21![Multiple Airlines logo]()
$172
This Kiwi.com deal was found by Cheapflights users on 3/21. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/2011:45 am
GEG
- SAT
2 stops25h 24m
Multiple Airlines
Deal found 3/21![Multiple Airlines logo]()
$175
This Kiwi.com deal was found by Cheapflights users on 3/22. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/1711:45 am
GEG
- SAT
2 stops27h 50m
Multiple Airlines
Deal found 3/22![Multiple Airlines logo]()
$178
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 March 26, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $200 (Frontier) |
One-way from | $131 (Expedia) |
Popular in | March |
Cheapest in | January |
Average price | $536 |
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 2,558,603 searches. Data last updated March 26, 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
BoiseSan Antonio
BOI - SAT
BOISAT
Boise Air Term. Gowen Fld
Wed 4/22
7:05 am-2:33 pm
1 stop6h 28m
San Antonio
Wed 4/29
7:38 am-3:03 pm
1 stop8h 25m
$263
BoiseSan Antonio
BOI - SAT
BOISAT
Boise Air Term. Gowen Fld
Wed 4/29
11:35 pm-9:46 am
1 stop9h 11m
San Antonio
Sat 5/2
6:20 am-1:07 pm
1 stop7h 47m
$290
SpokaneSan Antonio
GEG - SAT
GEGSAT
Spokane
Wed 5/6
5:10 am-3:05 pm
2 stops7h 55m
San Antonio
Wed 5/13
6:50 am-1:05 pm
1 stop8h 15m
$310
Idaho FallsSan Antonio
IDA - SAT
IDASAT
Idaho Falls Fanning Field
Tue 4/28
6:58 pm-12:25 am
1 stop4h 27m
San Antonio
Sat 5/2
6:02 pm-10:40 pm
1 stop5h 38m
$329
SpokaneSan Antonio
GEG - SAT
GEGSAT
Spokane
Mon 4/20
1:30 pm-12:05 am
1 stop8h 35m
San Antonio
Wed 4/22
4:55 pm-11:25 pm
2 stops8h 30m
$359
BoiseSan Antonio
BOI - SAT
BOISAT
Boise Air Term. Gowen Fld
Wed 5/13
3:23 pm-11:48 pm
1 stop7h 25m
San Antonio
Sun 5/17
5:25 am-12:43 pm
1 stop8h 18m
$365
SpokaneSan Antonio
GEG - SAT
GEGSAT
Spokane
Tue 5/12
6:00 am-8:49 pm
2 stops12h 49m
San Antonio
Fri 5/15
4:35 pm-9:16 pm
1 stop6h 41m
$374
HaileySan Antonio
SUN - SAT
SUNSAT
Hailey Sun Valley-Friedman
Fri 4/24
7:15 am-1:38 pm
1 stop5h 23m
San Antonio
Fri 5/1
6:05 pm-9:42 pm
1 stop4h 37m
$376
Idaho FallsSan Antonio
IDA - SAT
IDASAT
Idaho Falls Fanning Field
Fri 6/12
5:54 pm-11:59 pm
1 stop5h 05m
San Antonio
Tue 6/16
5:30 am-9:50 am
1 stop5h 20m
$380
JacksonSan Antonio
JAC - SAT
JACSAT
Jackson Hole
Thu 4/30
5:11 pm-12:25 am
1 stop6h 14m
San Antonio
Thu 5/7
12:35 pm-4:59 pm
1 stop5h 24m
$391
Showing 1-10 of 55 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
GEG-SAT
IDA-SAT
SUN-SAT
JAC-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
GEG-SAT
IDA-SAT
SUN-SAT
What is the cheapest month to book a flight from Idaho to San Antonio?
Currently, July is the cheapest month in which you can book a flight from Idaho to San Antonio (average of $131). Flying from Idaho to San Antonio in March is currently the most expensive (average of $276). 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?
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
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
Popular flights
San Antonio flight routes
Top destinations
Alternative routes for Idaho 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 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 March 26, 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 March 26, 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 2,558,603 searches. Data last updated March 26, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$131 | Average$395 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$208 | Average$463 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$230 | Average$427 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$259 | Average$396 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$303 | Average$446 | FlexibilityNo cancel fee | On-time75% |