$80+ Cheap flights from San Antonio to Ontario (SAT - ONT)
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 5/19. Fares are subject to change and may not be available on all flights or dates of travel.
SAT — ONT
May 30 — Jun 61
Round-trip
1 adult, Economy
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Find cheap flights from San Antonio to Ontario 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
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Cheapest flights from San Antonio to OntarioExplore the most affordable flight options available from San Antonio to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 30, 2026.
Explore the most affordable flight options available from San Antonio to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 30, 2026.
This Cheapflightsfares deal was found by Cheapflights users on 4/27. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/118:59 pm
SAT
- ONT
1 stop20h 45m
Frontier
Tue 5/194:39 pm
ONT
- SAT
1 stop25h 35m
Frontier
Deal found 4/27![Frontier logo]()
$179
This Kiwi.com deal was found by Cheapflights users on 4/29. 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 5/197:54 pm
SAT
- ONT
1 stop16h 11m
Frontier
Thu 5/213:30 pm
ONT
- SAT
1 stop26h 44m
Frontier
Deal found 4/29![Frontier logo]()
$186
This Cheapflightsfares deal was found by Cheapflights users on 4/29. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/208:59 pm
SAT
- ONT
1 stop20h 10m
Frontier
Wed 5/276:00 am
ONT
- SAT
1 stop10h 59m
Frontier
Deal found 4/29![Frontier logo]()
$188
This Cheapflightsfares deal was found by Cheapflights users on 4/29. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/187:54 pm
SAT
- ONT
1 stop16h 11m
Frontier
Wed 5/204:39 pm
ONT
- SAT
1 stop25h 35m
Frontier
Deal found 4/29![Frontier logo]()
$189
This Cheapflightsfares deal was found by Cheapflights users on 4/27. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/117:54 pm
SAT
- ONT
1 stop16h 11m
Frontier
Wed 5/1310:50 am
ONT
- SAT
1 stop6h 09m
Frontier
Deal found 4/27![Frontier logo]()
$199
This Cheapflightsfares deal was found by Cheapflights users on 4/29. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/138:59 pm
SAT
- ONT
1 stop24h 33m
Frontier
Tue 6/24:39 pm
ONT
- SAT
1 stop25h 35m
Frontier
Deal found 4/29![Frontier logo]()
$208
This Cheapflightsfares deal was found by Cheapflights users on 4/25. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/97:54 pm
SAT
- ONT
1 stop16h 11m
Frontier
Sun 5/104:04 pm
ONT
- SAT
1 stop26h 10m
Frontier
Deal found 4/25![Frontier logo]()
$209
This CheapOair deal was found by Cheapflights users on 4/26. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/237:54 pm
SAT
- ONT
1 stop5h 55m
Frontier
Sat 5/3011:51 am
ONT
- SAT
1 stop6h 23m
Frontier
Deal found 4/26![Frontier logo]()
$214
This Cheapflightsfares deal was found by Cheapflights users on 4/25. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/118:59 pm
SAT
- ONT
1 stop24h 54m
Frontier
Wed 7/153:40 pm
ONT
- SAT
1 stop26h 34m
Frontier
Deal found 4/25![Frontier logo]()
$216
This Cheapflightsfares deal was found by Cheapflights users on 4/29. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/87:51 pm
SAT
- ONT
1 stop5h 59m
Frontier
Sat 7/116:00 am
ONT
- SAT
1 stop10h 54m
Frontier
Deal found 4/29![Frontier logo]()
$217
This Cheapflightsfares deal was found by Cheapflights users on 4/29. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/297:54 pm
SAT
- ONT
1 stop16h 11m
Frontier
Mon 6/13:30 pm
ONT
- SAT
1 stop26h 44m
Frontier
Deal found 4/29![Frontier logo]()
$218
This Frontier deal was found by Cheapflights users on 4/28. 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 5/289:09 pm
SAT
- ONT
1 stop12h 55m
Frontier
Wed 6/36:00 am
ONT
- SAT
1 stop10h 59m
Frontier
Deal found 4/28![Frontier logo]()
$219
Best flights from San Antonio to OntarioDiscover carefully curated flight deals from San Antonio to Ontario that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated April 30, 2026.
Discover carefully curated flight deals from San Antonio to Ontario that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated April 30, 2026.
This Trip.com deal was found by Cheapflights users on 4/25. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/188:59 pm
SAT
- ONT
1 stop24h 54m
Frontier
Thu 7/3010:49 am
ONT
- SAT
1 stop6h 05m
Frontier
Deal found 4/25![Frontier logo]()
$255
This Southwest deal was found by Cheapflights users on 4/29. 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 6/91:40 pm
SAT
- ONT
2 stops8h 40m
Southwest
Tue 6/233:30 pm
ONT
- SAT
2 stops7h 00m
Southwest
Deal found 4/29![Southwest logo]()
$414
This Delta deal was found by Cheapflights users on 4/25. 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 5/2812:35 pm
SAT
- ONT
1 stop5h 42m
Delta
Sun 5/314:57 pm
ONT
- SAT
1 stop5h 16m
Delta
Deal found 4/25![Delta logo]()
$426
This United Airlines deal was found by Cheapflights users on 4/28. 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 6/61:39 pm
SAT
- ONT
2 stops11h 11m
United Airlines
Mon 6/85:45 am
ONT
- SAT
1 stop7h 54m
United Airlines
Deal found 4/28![United Airlines logo]()
$500
This Southwest deal was found by Cheapflights users on 4/26. 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 6/16:45 pm
SAT
- ONT
2 stops6h 20m
Southwest
Tue 6/96:10 am
ONT
- SAT
2 stops12h 05m
Southwest
Deal found 4/26![Southwest logo]()
$421
This Southwest deal was found by Cheapflights users on 4/28. 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 6/206:10 am
SAT
- ONT
2 stops8h 35m
Southwest
Mon 7/65:15 am
ONT
- SAT
2 stops6h 10m
Southwest
Deal found 4/28![Southwest logo]()
$457
This United Airlines deal was found by Cheapflights users on 4/26. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/275:30 am
SAT
- ONT
2 stops8h 42m
United Airlines
Sun 8/25:45 am
ONT
- SAT
1 stop7h 54m
United Airlines
Deal found 4/26![United Airlines logo]()
$542
This Southwest deal was found by Cheapflights users on 4/29. 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 6/195:20 am
SAT
- ONT
2 stops8h 00m
Southwest
Wed 6/245:15 am
ONT
- SAT
2 stops7h 20m
Southwest
Deal found 4/29![Southwest logo]()
$464
This Southwest deal was found by Cheapflights users on 4/26. 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 7/25:35 pm
SAT
- ONT
1 stop6h 35m
Southwest
Sun 7/55:15 am
ONT
- SAT
2 stops6h 05m
Southwest
Deal found 4/26![Southwest logo]()
$477
This United Airlines deal was found by Cheapflights users on 4/26. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/49:37 am
SAT
- ONT
2 stops9h 51m
United Airlines
Mon 6/85:45 am
ONT
- SAT
1 stop7h 54m
United Airlines
Deal found 4/26![United Airlines logo]()
$589
This United Airlines deal was found by Cheapflights users on 4/28. 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 7/71:39 pm
SAT
- ONT
2 stops10h 58m
United Airlines
Mon 7/131:18 pm
ONT
- SAT
1 stop5h 36m
United Airlines
Deal found 4/28![United Airlines logo]()
$610
This Southwest deal was found by Cheapflights users on 4/29. 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 6/195:20 am
SAT
- ONT
2 stops8h 00m
Southwest
Fri 6/264:00 pm
ONT
- SAT
2 stops7h 35m
Southwest
Deal found 4/29![Southwest logo]()
$517
Last-minute flights from San Antonio to OntarioDiscover last-minute flight deals from San Antonio to Ontario. Data last updated April 30, 2026 and is based on user searches.
Discover last-minute flight deals from San Antonio to Ontario. Data last updated April 30, 2026 and is based on user searches.
This Cheapflightsfares deal was found by Cheapflights users on 4/27. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/118:59 pm
SAT
- ONT
1 stop20h 45m
Frontier
Tue 5/194:39 pm
ONT
- SAT
1 stop25h 35m
Frontier
Deal found 4/27![Frontier logo]()
$179
This Cheapflightsfares deal was found by Cheapflights users on 4/27. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/117:54 pm
SAT
- ONT
1 stop16h 11m
Frontier
Wed 5/1310:50 am
ONT
- SAT
1 stop6h 09m
Frontier
Deal found 4/27![Frontier logo]()
$199
This Cheapflightsfares deal was found by Cheapflights users on 4/29. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/138:59 pm
SAT
- ONT
1 stop24h 33m
Frontier
Tue 6/24:39 pm
ONT
- SAT
1 stop25h 35m
Frontier
Deal found 4/29![Frontier logo]()
$208
This Cheapflightsfares deal was found by Cheapflights users on 4/26. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/137:54 pm
SAT
- ONT
1 stop5h 55m
Frontier
Thu 5/144:04 pm
ONT
- SAT
1 stop26h 10m
Frontier
Deal found 4/26![Frontier logo]()
$209
This Frontier deal was found by Cheapflights users on 4/27. 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.
Sat 5/167:54 pm
SAT
- ONT
1 stop5h 55m
Frontier
Wed 5/2010:50 am
ONT
- SAT
1 stop6h 09m
Frontier
Deal found 4/27![Frontier logo]()
$221
This Cheapflightsfares deal was found by Cheapflights users on 4/29. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/187:54 pm
SAT
- ONT
1 stop16h 11m
Frontier
Wed 5/204:39 pm
ONT
- SAT
1 stop25h 35m
Frontier
Deal found 4/29![Frontier logo]()
$189
This Kiwi.com deal was found by Cheapflights users on 4/29. 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 5/197:54 pm
SAT
- ONT
1 stop16h 11m
Frontier
Thu 5/213:30 pm
ONT
- SAT
1 stop26h 44m
Frontier
Deal found 4/29![Frontier logo]()
$186
This Cheapflightsfares deal was found by Cheapflights users on 4/29. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/208:59 pm
SAT
- ONT
1 stop20h 10m
Frontier
Wed 5/276:00 am
ONT
- SAT
1 stop10h 59m
Frontier
Deal found 4/29![Frontier logo]()
$188
This Cheapflightsfares deal was found by Cheapflights users on 4/29. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/268:59 pm
SAT
- ONT
1 stop13h 05m
Frontier
Fri 5/293:30 pm
ONT
- SAT
1 stop26h 44m
Frontier
Deal found 4/29![Frontier logo]()
$214
This Frontier deal was found by Cheapflights users on 4/28. 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 5/289:09 pm
SAT
- ONT
1 stop12h 55m
Frontier
Wed 6/36:00 am
ONT
- SAT
1 stop10h 59m
Frontier
Deal found 4/28![Frontier logo]()
$219
This Cheapflightsfares deal was found by Cheapflights users on 4/30. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/297:54 pm
SAT
- ONT
1 stop16h 11m
Frontier
Mon 6/13:30 pm
ONT
- SAT
1 stop26h 44m
Frontier
Deal found 4/30![Frontier logo]()
$218
One-way flights from San Antonio to OntarioSearch for one-way flight options from San Antonio to Ontario. Find affordable one-way fares based on user searches. Data last updated April 30, 2026.
Search for one-way flight options from San Antonio to Ontario. Find affordable one-way fares based on user searches. Data last updated April 30, 2026.
This Super.com deal was found by Cheapflights users on 4/26. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/197:54 pm
SAT
- ONT
1 stop5h 55m
Frontier
Deal found 4/26![Frontier logo]()
$80
This Super.com deal was found by Cheapflights users on 4/26. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/187:54 pm
SAT
- ONT
1 stop16h 11m
Frontier
Deal found 4/26![Frontier logo]()
$85
This Super.com deal was found by Cheapflights users on 4/29. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/138:59 pm
SAT
- ONT
1 stop20h 10m
Frontier
Deal found 4/29![Frontier logo]()
$105
This Super.com deal was found by Cheapflights users on 4/28. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/27:54 pm
SAT
- ONT
1 stop5h 55m
Frontier
Deal found 4/28![Frontier logo]()
$108
This Super.com deal was found by Cheapflights users on 4/29. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/268:59 pm
SAT
- ONT
1 stop20h 45m
Frontier
Deal found 4/29![Frontier logo]()
$110
This Cheapflightsfares deal was found by Cheapflights users on 4/30. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/167:51 pm
SAT
- ONT
1 stop16h 14m
Frontier
Deal found 4/30![Frontier logo]()
$114
This Super.com deal was found by Cheapflights users on 4/29. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/318:59 pm
SAT
- ONT
1 stop20h 10m
Frontier
Deal found 4/29![Frontier logo]()
$115
This Super.com deal was found by Cheapflights users on 4/29. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/67:54 pm
SAT
- ONT
1 stop5h 55m
Frontier
Deal found 4/29![Frontier logo]()
$124
This Frontier deal was found by Cheapflights users on 4/28. 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.
Tue 5/57:54 pm
SAT
- ONT
1 stop5h 55m
Frontier
Deal found 4/28![Frontier logo]()
$125
Find flight deals from San Antonio to Ontario
Discover tips and strategies to find the most affordable flight options for your journey from San Antonio (SAT) to Ontario (ONT). 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 April 30, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $159 (Cheapflightsfares) |
One-way from | $80 (Super.com) |
Popular in | June |
Cheapest in | November |
Average price | $407 |
Cheapflights Fare Finder
Customize your flight search to find flights from San Antonio to Ontario 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 April 30, 2026.
Use the filters below to find and compare flights from San Antonio to Ontario that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
San AntonioOntario
SAT - ONT
SATONT
San Antonio
Sat 7/18
8:59 pm-7:53 pm
1 stop24h 54m
Ontario
Thu 7/30
10:49 am-6:54 pm
1 stop6h 05m
$255
San AntonioOntario
SAT - ONT
SATONT
San Antonio
Tue 6/9
1:40 pm-8:20 pm
2 stops8h 40m
Ontario
Tue 6/23
3:30 pm-12:30 am
2 stops7h 00m
$414
San AntonioOntario
SAT - ONT
SATONT
San Antonio
Mon 6/1
6:45 pm-11:05 pm
2 stops6h 20m
Ontario
Tue 6/9
6:10 am-8:15 pm
2 stops12h 05m
$421
Quickest round-trip
San AntonioOntario
SAT - ONT
SATONT
San Antonio
Thu 5/28
12:35 pm-4:17 pm
1 stop5h 42m
Ontario
Sun 5/31
4:57 pm-12:13 am
1 stop5h 16m
$426
San AntonioOntario
SAT - ONT
SATONT
San Antonio
Sat 6/20
6:10 am-12:45 pm
2 stops8h 35m
Ontario
Mon 7/6
5:15 am-1:25 pm
2 stops6h 10m
$457
San AntonioOntario
SAT - ONT
SATONT
San Antonio
Fri 6/19
5:20 am-11:20 am
2 stops8h 00m
Ontario
Wed 6/24
5:15 am-2:35 pm
2 stops7h 20m
$464
San AntonioOntario
SAT - ONT
SATONT
San Antonio
Thu 7/2
5:35 pm-10:10 pm
1 stop6h 35m
Ontario
Sun 7/5
5:15 am-1:20 pm
2 stops6h 05m
$477
San AntonioOntario
SAT - ONT
SATONT
San Antonio
Sat 6/6
1:39 pm-10:50 pm
2 stops11h 11m
Ontario
Mon 6/8
5:45 am-3:39 pm
1 stop7h 54m
$500
San AntonioOntario
SAT - ONT
SATONT
San Antonio
Fri 6/19
5:20 am-11:20 am
2 stops8h 00m
Ontario
Fri 6/26
4:00 pm-1:35 am
2 stops7h 35m
$517
San AntonioOntario
SAT - ONT
SATONT
San Antonio
Mon 7/27
5:30 am-12:12 pm
2 stops8h 42m
Ontario
Sun 8/2
5:45 am-3:39 pm
1 stop7h 54m
$542
Showing 1-10 of 23 resultsSorted by cheapest first
Compare providers for flights from San Antonio to Ontario
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 San Antonio to Ontario in April.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy- | Trust Score*1 star | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy- | Trust Score*1 star |
- Most accurate provider: When it comes to deals on San Antonio-Ontario flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on San Antonio-Ontario flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from San Antonio-Ontario flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on San Antonio-Ontario 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 San Antonio-Ontario 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 San Antonio to Ontario
Have a flexible travel schedule? Discover the best time to fly to Ontario from San Antonio with our price prediction graph.
SAT-ONT
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Cheapflights Insights
Everything you need to know about your flight from San Antonio to Ontario
Prices
More
How far ahead should I book a flight from San Antonio to Ontario?
Booking 46 days in advance of your planned departure date is, on average, the best time to get cheap flights from San Antonio to Ontario. The general trend is that the closer you book to the departure date, the more expensive your flight will be.
What is the cheapest month to book a flight from San Antonio to Ontario?
Currently, November is the cheapest month in which you can book a flight from San Antonio to Ontario (average of $273). Flying from San Antonio to Ontario in June is currently the most expensive (average of $485). 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 San Antonio to Ontario?
What’s the top layover airport for flights from San Antonio to Ontario?
Share of 1-stop round-trip flights from San Antonio to Ontario chosen by Cheapflights users in the past 12 months, using the same layover each way.
Phoenix (PHX) – chosen by Cheapflights users on 75% of 1-stop itineraries from San Antonio to Ontario on Cheapflights.
What’s the cheapest layover airport for flights from San Antonio to Ontario?
Average round-trip fare for 1-stop flights from San Antonio to Ontario, chosen by Cheapflights users in the past 12 months, with the same layover each way.
Denver (DEN) is the most affordable 1-stop option, with an average round-trip price of $272.
What’s the fastest layover option from San Antonio to Ontario?
Shortest average travel time for 1-stop one-way flights from San Antonio to Ontario, based on itineraries clicked by Cheapflights users over the past 12 months, grouped by layover airport.
Flights via Phoenix (PHX) have the shortest average one-way travel time for 1-stop routes: 4h 44m.
Which airport typically offers the quickest layover for flights from San Antonio to Ontario?
Average layover duration for 1-stop one-way flights from San Antonio to Ontario, chosen by Cheapflights users in the last 12 months, grouped by stopover airport.
Flights via Phoenix (PHX) offer the fastest connection on this route, with an average layover time of 1h 02m.
Reviews of airlines servicing Ontario
Get insights into the airlines that provide service to Ontario. 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 Ontario. Reviews last updated April 30, 2026.
Read through reviews of airlines operating flights from San Antonio to Ontario, such as Southwest,United Airlines, andAmerican Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Boarding
8.1
Crew
8.6
Entertainment
7.5
Comfort
8.0
Overall
8.0
Food
7.0
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Boarding
8.1
Crew
8.6
Entertainment
7.5
Comfort
8.0
Overall
8.0
Food
7.0
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Boarding
8.1
Crew
8.6
Entertainment
7.5
Comfort
8.0
Overall
8.0
Food
7.0
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Boarding
8.1
Crew
8.6
Entertainment
7.5
Comfort
8.0
Overall
8.0
Food
7.0
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Boarding
8.1
Crew
8.6
Entertainment
7.5
Comfort
8.0
Overall
8.0
Food
7.0
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Related info for your journey
Find useful and relevant information for your journey from San Antonio to Ontario. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
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Other flights to Ontario
Explore flights to Ontario departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on April 30, 2026.
San Antonio and Ontario flights
Browse other San Antonio and Ontario flight options. Last updated on April 30, 2026.
Other flights from San Antonio
Browse through other flights departing from San Antonio. Flights are based on user searches made on Cheapflights and were last updated on April 30, 2026.
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Top 4 airlines flying from San Antonio to Ontario
Discover the top 4 airlines that operate flights from San Antonio to Ontario. 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 April 30, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$153 | Average$237 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$273 | Average$382 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$296 | Average$416 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$307 | Average$466 | FlexibilityNo cancel fee | On-time69% |