$131+ Cheap flights from O'Hare Intl (ORD) to San Antonio (SAT)
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 11/17. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — SAT
Oct 10 — Oct 171
Round-trip
1 adult, Economy
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Find cheap flights from O'Hare Intl 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.Cheapflights Tip: The best prices from Chicago O'Hare Intl to San Antonio are usually found in January or April, booked 79 days in advance, depart on a Thursday or Saturday and return on a Thursday
Cheap flight deals from O'Hare Intl to San Antonio
Cheapest
Best
Last-minute
One-way
Cheapest flights from O'Hare Intl to San AntonioExplore the most affordable flight options available from O'Hare Intl to San Antonio. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 10, 2026.
Explore the most affordable flight options available from O'Hare Intl to San Antonio. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 10, 2026.
This Frontier deal was found by Cheapflights users on 9/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/36:30 am -
1 stop12h 55m
Tue 10/63:19 pm -
1 stop14h 19m
Deal found 9/6![Frontier logo]()
$258
This Frontier deal was found by Cheapflights users on 9/5. 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.
Wed 9/236:30 am -
1 stop12h 55m
Wed 9/303:19 pm -
1 stop14h 19m
Deal found 9/5![Frontier logo]()
$259
This Frontier deal was found by Cheapflights users on 9/5. 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 10/86:30 am -
1 stop12h 56m
Mon 10/1210:03 am -
1 stop21h 48m
Deal found 9/5![Frontier logo]()
$260
This CheapOair deal was found by Cheapflights users on 9/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/246:30 am -
1 stop12h 56m
Tue 10/278:20 pm -
1 stop28h 01m
Deal found 9/4![Frontier logo]()
$268
This CheapOair deal was found by Cheapflights users on 9/5. 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 9/243:50 pm -
1 stop17h 20m
Sat 9/262:47 pm -
1 stop14h 51m
Deal found 9/5![Frontier logo]()
$269
This CheapOair deal was found by Cheapflights users on 9/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/218:55 pm -
1 stop17h 25m
Fri 9/258:20 pm -
1 stop28h 03m
Deal found 9/6![Frontier logo]()
$270
This Super.com deal was found by Cheapflights users on 9/5. 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.
Fri 9/258:55 pm -
1 stop16h 53m
Mon 9/288:20 pm -
1 stop28h 03m
Deal found 9/5![Frontier logo]()
$271
This Super.com deal was found by Cheapflights users on 9/9. 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.
Fri 9/258:55 pm -
1 stop16h 53m
Sun 9/278:20 pm -
1 stop28h 03m
Deal found 9/9![Frontier logo]()
$272
This CheapOair deal was found by Cheapflights users on 9/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/36:30 am -
1 stop12h 55m
Mon 10/59:50 pm -
1 stop7h 48m
Deal found 9/6![Frontier logo]()
$273
This Trip.com deal was found by Cheapflights users on 9/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/226:30 am -
1 stop12h 56m
Mon 10/261:10 pm -
1 stop16h 06m
Deal found 9/6![Frontier logo]()
$274
This Trip.com deal was found by Cheapflights users on 9/5. 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 9/197:32 pm -
1 stop16h 12m
Sun 9/278:20 pm -
1 stop28h 03m
Deal found 9/5![Frontier logo]()
$275
This Trip.com deal was found by Cheapflights users on 9/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/218:55 pm -
1 stop17h 25m
Thu 9/248:20 pm -
1 stop28h 03m
Deal found 9/7![Frontier logo]()
$276
Best flights from O'Hare Intl to San AntonioDiscover carefully curated flight deals from O'Hare Intl to San Antonio that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 10, 2026.
Discover carefully curated flight deals from O'Hare Intl to San Antonio that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 10, 2026.
This United Airlines deal was found by Cheapflights users on 9/9. 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 12/41:00 pm -
Nonstop3h 18m
Mon 12/76:45 am -
Nonstop2h 57m
Deal found 9/9![United Airlines logo]()
$376
This Trip.com deal was found by Cheapflights users on 9/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/126:30 am -
1 stop12h 56m
Fri 10/1610:03 am -
1 stop8h 59m
Deal found 9/4![Frontier logo]()
$449
This American Airlines deal was found by Cheapflights users on 9/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/295:21 am -
1 stop5h 41m
Sat 1/29:23 am -
1 stop4h 46m
Deal found 9/4![American Airlines logo]()
$508
This Delta deal was found by Cheapflights users on 9/5. 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 10/228:29 am -
1 stop7h 21m
Sun 10/255:15 am -
1 stop7h 44m
Deal found 9/5![Delta logo]()
$675
This United Airlines deal was found by Cheapflights users on 9/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/237:50 pm -
Nonstop3h 00m
Mon 10/264:19 pm -
1 stop5h 17m
Deal found 9/8![United Airlines logo]()
$386
This United Airlines deal was found by Cheapflights users on 9/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/232:23 pm -
1 stop5h 16m
Sat 12/265:58 pm -
1 stop5h 26m
Deal found 9/7![United Airlines logo]()
$461
This United Airlines deal was found by Cheapflights users on 9/8. 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 10/249:00 am -
Nonstop3h 06m
Tue 10/277:35 am -
1 stop4h 54m
Deal found 9/8![United Airlines logo]()
$465
This American Airlines deal was found by Cheapflights users on 9/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/125:16 pm -
1 stop5h 41m
Fri 10/165:00 am -
1 stop5h 00m
Deal found 9/4![American Airlines logo]()
$668
This United Airlines deal was found by Cheapflights users on 9/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/212:22 pm -
1 stop7h 04m
Sun 11/296:34 am -
Nonstop2h 59m
Deal found 9/5![United Airlines logo]()
$521
This United Airlines deal was found by Cheapflights users on 9/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/239:21 am -
1 stop6h 17m
Sat 11/287:15 pm -
1 stop7h 20m
Deal found 9/6![United Airlines logo]()
$527
This United Airlines deal was found by Cheapflights users on 9/9. 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 9/237:50 pm -
Nonstop3h 01m
Sat 9/262:00 pm -
Nonstop3h 00m
Deal found 9/9![United Airlines logo]()
$535
Last-minute flights from O'Hare Intl to San AntonioDiscover last-minute flight deals from O'Hare Intl to San Antonio. Data last updated September 10, 2026 and is based on user searches.
Discover last-minute flight deals from O'Hare Intl to San Antonio. Data last updated September 10, 2026 and is based on user searches.
This Trip.com deal was found by Cheapflights users on 9/5. 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 9/197:32 pm -
1 stop16h 12m
Sun 9/278:20 pm -
1 stop28h 03m
Deal found 9/5![Frontier logo]()
$275
This CheapOair deal was found by Cheapflights users on 9/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/218:55 pm -
1 stop17h 25m
Fri 9/258:20 pm -
1 stop28h 03m
Deal found 9/6![Frontier logo]()
$270
This Trip.com deal was found by Cheapflights users on 9/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/218:55 pm -
1 stop17h 25m
Thu 9/248:20 pm -
1 stop28h 03m
Deal found 9/7![Frontier logo]()
$276
This Frontier deal was found by Cheapflights users on 9/5. 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.
Wed 9/236:30 am -
1 stop12h 55m
Wed 9/303:19 pm -
1 stop14h 19m
Deal found 9/5![Frontier logo]()
$259
This CheapOair deal was found by Cheapflights users on 9/5. 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 9/243:50 pm -
1 stop17h 20m
Sat 9/262:47 pm -
1 stop14h 51m
Deal found 9/5![Frontier logo]()
$269
This Super.com deal was found by Cheapflights users on 9/5. 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.
Fri 9/258:55 pm -
1 stop16h 53m
Mon 9/288:20 pm -
1 stop28h 03m
Deal found 9/5![Frontier logo]()
$271
This Super.com deal was found by Cheapflights users on 9/9. 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.
Fri 9/258:55 pm -
1 stop16h 53m
Sun 9/278:20 pm -
1 stop28h 03m
Deal found 9/9![Frontier logo]()
$272
This Frontier deal was found by Cheapflights users on 9/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/36:30 am -
1 stop12h 55m
Tue 10/63:19 pm -
1 stop14h 19m
Deal found 9/6![Frontier logo]()
$258
This CheapOair deal was found by Cheapflights users on 9/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/36:30 am -
1 stop12h 55m
Mon 10/59:50 pm -
1 stop7h 48m
Deal found 9/6![Frontier logo]()
$273
This Frontier deal was found by Cheapflights users on 9/5. 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 10/86:30 am -
1 stop12h 56m
Mon 10/1210:03 am -
1 stop21h 48m
Deal found 9/5![Frontier logo]()
$260
This CheapOair deal was found by Cheapflights users on 9/5. 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.
Wed 10/216:30 am -
1 stop12h 56m
Mon 10/268:21 pm -
1 stop28h 00m
Deal found 9/5![Frontier logo]()
$268
This Trip.com deal was found by Cheapflights users on 9/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/226:30 am -
1 stop12h 56m
Mon 10/261:10 pm -
1 stop16h 06m
Deal found 9/6![Frontier logo]()
$274
One-way flights from O'Hare Intl to San AntonioSearch for one-way flight options from O'Hare Intl to San Antonio. Find affordable one-way fares based on user searches. Data last updated September 10, 2026.
Search for one-way flight options from O'Hare Intl to San Antonio. Find affordable one-way fares based on user searches. Data last updated September 10, 2026.
This Super.com deal was found by Cheapflights users on 9/9. 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 11/176:30 am -
1 stop12h 55m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/9![Frontier logo]()
$131
This Super.com deal was found by Cheapflights users on 9/5. 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.
Sat 10/36:30 am -
1 stop12h 55m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/5![Frontier logo]()
$134
This Frontier deal was found by Cheapflights users on 9/5. 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.
Mon 12/76:15 am -
1 stop13h 57m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/5![Frontier logo]()
$135
This Frontier deal was found by Cheapflights users on 9/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/226:30 am -
1 stop12h 55m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/6![Frontier logo]()
$136
This CheapOair deal was found by Cheapflights users on 9/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/218:55 pm -
1 stop17h 25m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/6![Frontier logo]()
$137
This eDestinos deal was found by Cheapflights users on 9/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure eDestinos is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/148:55 pm -
1 stop17h 25m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/6![Frontier logo]()
$141
This Super.com deal was found by Cheapflights users on 9/9. 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.
Fri 10/28:55 pm -
1 stop16h 53m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/9![Frontier logo]()
$147
This Super.com deal was found by Cheapflights users on 9/9. 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.
Fri 10/305:15 pm -
1 stop20h 34m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/9![Frontier logo]()
$148
This Super.com deal was found by Cheapflights users on 9/9. 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 9/208:55 pm -
1 stop14h 49m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/9![Frontier logo]()
$152
This Super.com deal was found by Cheapflights users on 9/5. 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 10/186:30 am -
1 stop12h 56m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/5![Frontier logo]()
$153
Find flight deals from O'Hare Intl to San Antonio
Discover tips and strategies to find the most affordable flight options for your journey from O'Hare Intl (ORD) to San Antonio (SAT). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated September 10, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $258 (Frontier) |
One-way from | $131 (Super.com) |
Popular in | November |
Cheapest in | January |
Average price | $388 |
Good round-trip deal | $297 or less |
Good one-way deal | $257 or less |
Cheapflights Fare Finder
Customize your flight search to find flights from O'Hare Intl to San Antonio that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 7,457,451 searches. Data last updated September 10, 2026.
Use the filters below to find and compare flights from Chicago O'Hare Intl Airport to San Antonio that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
ChicagoSan Antonio
ORD Chicago O'Hare Intl - SAT San Antonio
ORDSAT
Chicago O'Hare Intl
Sun 9/20
8:55 pm-11:44 am
1 stop14h 49m
San Antonio
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$152
ChicagoSan Antonio
ORD Chicago O'Hare Intl - SAT San Antonio
ORDSAT
Chicago O'Hare Intl
Mon 10/19
6:30 am-7:26 pm
1 stop12h 56m
San Antonio
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$153
ChicagoSan Antonio
ORD Chicago O'Hare Intl - SAT San Antonio
ORDSAT
Chicago O'Hare Intl
Tue 12/8
3:59 pm-12:36 am
1 stop8h 37m
San Antonio
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$193
ChicagoSan Antonio
ORD Chicago O'Hare Intl - SAT San Antonio
ORDSAT
Chicago O'Hare Intl
Fri 10/30
9:00 am-12:24 pm
Nonstop3h 24m
San Antonio
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$194
ChicagoSan Antonio
ORD Chicago O'Hare Intl - SAT San Antonio
ORDSAT
Chicago O'Hare Intl
Fri 10/2
9:05 am-12:11 pm
Nonstop3h 06m
San Antonio
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$194
ChicagoSan Antonio
ORD Chicago O'Hare Intl - SAT San Antonio
ORDSAT
Chicago O'Hare Intl
Fri 10/2
3:50 pm-7:25 pm
2 stops27h 35m
San Antonio
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$196
ChicagoSan Antonio
ORD Chicago O'Hare Intl - SAT San Antonio
ORDSAT
Chicago O'Hare Intl
Sat 11/21
7:52 pm-10:57 pm
Nonstop3h 05m
San Antonio
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$199
Quickest round-trip
ChicagoSan Antonio
ORD Chicago O'Hare Intl - SAT San Antonio
ORDSAT
Chicago O'Hare Intl
Mon 10/19
7:50 pm-10:50 pm
Nonstop3h 00m
San Antonio
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$215
ChicagoSan Antonio
ORD Chicago O'Hare Intl - SAT San Antonio
ORDSAT
Chicago O'Hare Intl
Sat 12/5
7:05 am-2:12 pm
1 stop7h 07m
San Antonio
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$219
ChicagoSan Antonio
ORD Chicago O'Hare Intl - SAT San Antonio
ORDSAT
Chicago O'Hare Intl
Thu 12/3
2:44 pm-10:58 pm
1 stop8h 14m
San Antonio
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$219
Showing 1-10 of 22 resultsSorted by cheapest first
Compare providers for flights from O'Hare Intl to San Antonio
Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from O'Hare Intl to San Antonio in September.
| 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 Accuracy2 stars | Trust Score*3 stars | |
| Price Accuracy- | Trust Score*1 star |
- Most accurate provider: When it comes to deals on Chicago O'Hare Intl Airport-San Antonio flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Chicago O'Hare Intl Airport-San Antonio flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Chicago O'Hare Intl Airport-San Antonio flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Chicago O'Hare Intl Airport-San Antonio flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Chicago O'Hare Intl Airport-San Antonio flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.
Best time to book a flight from O'Hare Intl to San Antonio
Have a flexible travel schedule? Discover the best time to fly to San Antonio from O'Hare Intl with our price prediction graph.
ORD-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 Chicago O'Hare Intl Airport to San Antonio
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Airlines
How far ahead should I book a flight from Chicago O'Hare Intl Airport to San Antonio?
The best time to book flights from Chicago O'Hare Intl Airport to San Antonio is 78 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.
What is the cheapest month to book a flight from Chicago O'Hare Intl Airport to San Antonio?
Currently, January is the cheapest month in which you can book a flight from Chicago O'Hare Intl Airport to San Antonio (average of $357). Flying from Chicago O'Hare Intl Airport to San Antonio in November is currently the most expensive (average of $482). 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.
What is the cheapest time of day to fly from ORD to SAT?
Find hourly flight availability from O'Hare Intl to San Antonio. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated September 10, 2026.
A simple way to save on the total cost of your ticket is to fly from Chicago O'Hare Intl Airport to San Antonio in the afternoon. If you’re flexible enough to do this you can expect to save up to 7% on your trip compared to booking a flight in the evening.
What is the cheapest day to fly from Chicago O'Hare Intl Airport to San Antonio?
Use this chart to determine the cheapest time to fly round-trip from O'Hare Intl to San Antonio. Price data was last updated on September 5, 2026.
Travelers seeking maximum savings on their Chicago O'Hare Intl Airport to San Antonio flight should consider departing on Friday afternoons when fares are most often at their lowest. Monday evenings flights should be avoided if possible as fares are typically the most expensive at this time.
The best insider tips for Chicago O'Hare Intl Airport to San Antonio flights
AI-powered summary based on content written by travel experts. AI can make mistakes.
Cheapflights partnered with top experts to bring you the best recommendations for your Chicago O'Hare Intl Airport to San Antonio trip
Our travel experts
Reviews of airlines servicing San Antonio
Get insights into the airlines that provide service to San Antonio. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to San Antonio. Reviews last updated September 10, 2026.
Get a feel of what it's like to fly with United Airlines,American Airlines, andFrontier from Chicago O'Hare Intl Airport to San Antonio by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Boarding
7.7
Comfort
7.3
Entertainment
7.1
Overall
7.4
Food
6.7
Crew
8.1
Reviews
1 / 20
2.0
MediocreDawn,Aug 2026
ORD - DEN
Boarding
7.7
Comfort
7.3
Entertainment
7.1
Overall
7.4
Food
6.7
Crew
8.1
Reviews
1 / 20
2.0
MediocreDawn,Aug 2026
ORD - DEN
Boarding
7.7
Comfort
7.3
Entertainment
7.1
Overall
7.4
Food
6.7
Crew
8.1
Reviews
1 / 20
2.0
MediocreDawn,Aug 2026
ORD - DEN
Boarding
7.7
Comfort
7.3
Entertainment
7.1
Overall
7.4
Food
6.7
Crew
8.1
Reviews
1 / 20
2.0
MediocreDawn,Aug 2026
ORD - DEN
Related info for your journey
Find useful and relevant information for your journey from O'Hare Intl 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
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O'Hare Intl and San Antonio flights
Browse other O'Hare Intl and San Antonio flight options. Last updated on September 10, 2026.
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Top 3 airlines flying from O'Hare Intl to San Antonio
Discover the top 3 airlines that operate flights from O'Hare Intl to San Antonio. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 7,457,451 searches. Data last updated September 10, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$101 | Average$264 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$222 | Average$431 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$277 | Average$389 | FlexibilityNo cancel fee | On-time71% |