$143+ Flights from Chicago O'Hare Intl Airport to San Antonio

One-way flight from Chicago O'Hare Intl to San Antonio

Highest demand for flights based on searches. 7% potential increase in price ($33 potential increase over avg. RT price).

Cheapest flight prices on average. 1% potential price decrease ($5 potential savings vs. average RT price).

Average for round-trip flights in June 2025

Price to beat on a round-trip flight from Chicago O'Hare Intl to San Antonio.

Price to beat on a one-way flight from Chicago O'Hare Intl to San Antonio.

Find flight deals from O'Hare Intl to San Antonio

Cheapest flights from O'Hare Intl to San Antonio
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 June 12, 2025.

Sun 6/297:27 amORD - SAT

1 stop6h 35mSpirit Airlines

Tue 7/14:20 pmSAT - ORD

1 stop13h 52mSpirit Airlines

Deal found 6/11

$182

Tue 10/219:45 amORD - SAT

Nonstop2h 50mAmerican Airlines

Tue 10/286:28 pmSAT - ORD

Nonstop2h 57mAmerican Airlines

Deal found 6/12

$217

Thu 8/283:58 pmORD - SAT

1 stop6h 50mUnited Airlines

Mon 9/16:30 amSAT - ORD

Nonstop2h 59mUnited Airlines

Deal found 6/10

$227

Thu 7/35:40 amORD - SAT

1 stop13h 34mMultiple Airlines

Tue 7/84:20 pmSAT - ORD

1 stop13h 43mMultiple Airlines

Deal found 6/10

$234

Tue 6/177:00 amORD - SAT

1 stop11h 03mFrontier

Tue 6/246:59 pmSAT - ORD

1 stop29h 00mFrontier

Deal found 6/9

$270

Tue 9/301:50 pmORD - SAT

2 stops9h 15mSouthwest

Sat 10/45:40 amSAT - ORD

2 stops8h 45mSouthwest

Deal found 6/10

$277

Tue 7/292:00 pmORD - SAT

1 stop8h 18mDelta

Tue 8/52:49 pmSAT - ORD

1 stop6h 41mDelta

Deal found 6/10

$287

Best flights from O'Hare Intl to San Antonio
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 June 12, 2025.

Sun 6/297:27 amORD - SAT

1 stop6h 35mSpirit Airlines

Tue 7/14:20 pmSAT - ORD

1 stop13h 52mSpirit Airlines

Deal found 6/11

$182

Thu 8/141:30 pmORD - SAT

Nonstop3h 08mUnited Airlines

Mon 8/186:45 amSAT - ORD

Nonstop2h 59mUnited Airlines

Deal found 6/11

$217

Tue 10/2110:00 amORD - SAT

1 stop7h 46mAmerican Airlines

Tue 10/286:28 pmSAT - ORD

Nonstop2h 57mAmerican Airlines

Deal found 6/11

$230

Thu 7/35:40 amORD - SAT

1 stop13h 34mMultiple Airlines

Tue 7/84:20 pmSAT - ORD

1 stop13h 43mMultiple Airlines

Deal found 6/10

$234

Tue 9/301:50 pmORD - SAT

2 stops9h 15mSouthwest

Sat 10/45:40 amSAT - ORD

2 stops8h 45mSouthwest

Deal found 6/10

$277

Tue 7/292:00 pmORD - SAT

1 stop8h 18mDelta

Tue 8/52:49 pmSAT - ORD

1 stop6h 41mDelta

Deal found 6/10

$287

Fri 8/296:00 amORD - SAT

1 stop13h 33mFrontier

Mon 9/18:18 pmSAT - ORD

1 stop25h 24mFrontier

Deal found 6/11

$301

Last-minute flights from O'Hare Intl to San Antonio
Discover last-minute flight deals from O'Hare Intl to San Antonio. Data last updated June 12, 2025 and is based on user searches.

Tue 6/177:00 amORD - SAT

1 stop11h 03mMultiple Airlines

Mon 6/2312:32 pmSAT - ORD

1 stop21h 06mMultiple Airlines

Deal found 6/9

$264

Tue 6/177:00 amORD - SAT

1 stop11h 03mFrontier

Tue 6/246:59 pmSAT - ORD

1 stop29h 00mFrontier

Deal found 6/9

$270

Tue 6/177:30 amORD - SAT

1 stop4h 05mSouthwest

Wed 6/185:45 amSAT - ORD

2 stops8h 15mSouthwest

Deal found 6/11

$645

Tue 6/179:23 amORD - SAT

Nonstop3h 00mUnited Airlines

Mon 6/236:45 amSAT - ORD

Nonstop2h 59mUnited Airlines

Deal found 6/9

$647

Tue 6/175:59 pmORD - SAT

1 stop6h 18mDelta

Thu 6/196:11 pmSAT - ORD

1 stop5h 47mDelta

Deal found 6/11

$822

Wed 6/182:52 pmORD - SAT

Nonstop2h 46mAmerican Airlines

Sat 7/52:42 pmSAT - ORD

Nonstop2h 56mAmerican Airlines

Deal found 6/11

$562

Fri 6/2010:43 amORD - SAT

1 stop24h 54mSpirit Airlines

Mon 6/2312:32 pmSAT - ORD

1 stop21h 06mSpirit Airlines

Deal found 6/10

$275

Sat 6/212:03 pmORD - SAT

2 stops15h 37mAlaska Airlines

Sat 6/287:00 amSAT - ORD

1 stop16h 59mAlaska Airlines

Deal found 6/11

$1,043

Sun 6/297:27 amORD - SAT

1 stop6h 35mSpirit Airlines

Tue 7/14:20 pmSAT - ORD

1 stop13h 52mSpirit Airlines

Deal found 6/11

$182

Wed 7/27:40 pmORD - SAT

Nonstop2h 58mUnited Airlines

Wed 7/96:45 amSAT - ORD

Nonstop2h 59mUnited Airlines

Deal found 6/9

$307

Thu 7/35:40 amORD - SAT

1 stop13h 34mMultiple Airlines

Tue 7/84:20 pmSAT - ORD

1 stop13h 43mMultiple Airlines

Deal found 6/10

$234

Tue 7/292:00 pmORD - SAT

1 stop8h 18mDelta

Tue 8/52:49 pmSAT - ORD

1 stop6h 41mDelta

Deal found 6/10

$287

One-way flights from O'Hare Intl to San Antonio
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 June 12, 2025.

Tue 7/297:08 amORD - SAT

2 stops29h 58mSpirit Airlines

Deal found 6/10

$143

Sat 7/126:09 pmORD - SAT

1 stop15h 38mSun Country Air

Deal found 6/10

$144

Mon 8/48:53 pmORD - SAT

Nonstop3h 04mAmerican Airlines

Deal found 6/11

$149

Mon 7/1411:45 amORD - SAT

3 stops25h 21mMultiple Airlines

Deal found 6/11

$167

Sun 6/225:40 amORD - SAT

1 stop13h 34mFrontier

Deal found 6/11

$176

Fri 8/297:55 pmORD - SAT

Nonstop3h 04mUnited Airlines

Deal found 6/10

$177

Fri 8/227:00 amORD - SAT

2 stops6h 50mSouthwest

Deal found 6/11

$192

Tue 6/177:05 amORD - SAT

2 stops10h 03mDelta

Deal found 6/11

$833

Cheapflights Fare Finder

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

Price

ChicagoSan Antonio

ORD - SAT

ORDSAT

Chicago O'Hare Intl

Sun 6/29

7:27 am-2:02 pm

1 stop6h 35m

San Antonio

Tue 7/1

4:20 pm-6:12 am

1 stop13h 52m

$182

ChicagoSan Antonio

ORD - SAT

ORDSAT

Chicago O'Hare Intl

Thu 8/28

3:58 pm-10:48 pm

1 stop6h 50m

San Antonio

Mon 9/1

6:30 am-9:29 am

Nonstop2h 59m

$227

ChicagoSan Antonio

ORD - SAT

ORDSAT

Chicago O'Hare Intl

Thu 7/3

5:40 am-7:14 pm

1 stop13h 34m

San Antonio

Tue 7/8

4:20 pm-6:03 am

1 stop13h 43m

$234

ChicagoSan Antonio

ORD - SAT

ORDSAT

Chicago O'Hare Intl

Sat 8/2

2:42 pm-5:38 pm

Nonstop2h 56m

San Antonio

Mon 8/4

6:28 pm-9:25 pm

Nonstop2h 57m

$268

ChicagoSan Antonio

ORD - SAT

ORDSAT

Chicago O'Hare Intl

Tue 6/17

7:00 am-6:03 pm

1 stop11h 03m

San Antonio

Tue 6/24

6:59 pm-11:59 pm

1 stop29h 00m

$270

ChicagoSan Antonio

ORD - SAT

ORDSAT

Chicago O'Hare Intl

Tue 7/29

2:00 pm-10:18 pm

1 stop8h 18m

San Antonio

Tue 8/5

2:49 pm-9:30 pm

1 stop6h 41m

$287

ChicagoSan Antonio

ORD - SAT

ORDSAT

Chicago O'Hare Intl

Tue 7/29

7:08 am-1:06 pm

2 stops29h 58m

$143

ChicagoSan Antonio

ORD - SAT

ORDSAT

Chicago O'Hare Intl

Sat 7/12

6:09 pm-9:47 am

1 stop15h 38m

$144

ChicagoSan Antonio

ORD - SAT

ORDSAT

Chicago O'Hare Intl

Fri 6/20

5:01 am-4:43 pm

1 stop11h 42m

$145

ChicagoSan Antonio

ORD - SAT

ORDSAT

Chicago O'Hare Intl

Mon 6/30

8:41 pm-11:44 pm

Nonstop3h 03m

$149

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/10

Showing 1-10 of 14 results

The best insider tips for Chicago O'Hare Intl Airport to San Antonio flights

Cheapflights partnered with top experts to bring you the best recommendations for your Chicago O'Hare Intl Airport to San Antonio trip

Airports

ORD

For a quick departure, use the free shuttle train between terminals at ORD to avoid long walks.

SAT

Upon arrival at SAT, consider using the VIA Metropolitan Transit bus for a budget-friendly ride to downtown San Antonio.

Our travel experts

Ramsey Qubein

Expert on ORD and SAT

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.

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

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 82 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, August is the cheapest month in which you can book a flight from Chicago O'Hare Intl Airport to San Antonio (average of $295). Flying from Chicago O'Hare Intl Airport to San Antonio in March is currently the most expensive (average of $376). 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?

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 24% on your trip compared to booking a flight in the morning.

What is the cheapest day to fly from Chicago O'Hare Intl Airport to San Antonio?

Travelers seeking maximum savings on their Chicago O'Hare Intl Airport to San Antonio flight should consider departing on Tuesday afternoons when fares are most often at their lowest. Monday mornings flights should be avoided if possible as fares are typically the most expensive at this time.

Weekly flight availability from Chicago O'Hare Intl Airport to San Antonio

The most flights from ORD to SAT are scheduled on a Thursday (28 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (7 on average).

Rainfall in San Antonio by month

In terms of precipitation, rainfall in San Antonio ranges from 1.6 - 3.7 inches per month. May is typically the wettest month, when rainfall can reach 3.7 in. December is typically the driest time to visit San Antonio when rainfall is around 1.6 in.

Temperature in San Antonio by month

If weather is an important factor for your trip to San Antonio, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 84.2 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 51.8 F).

Reviews of airlines servicing San Antonio

Read reviews from past customers who have flown Southwest, Delta and United Airlines from Chicago to San Antonio. In addition to providing an overall rating, users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

8.0

Very good

Reviews

1 / 20

8.0

Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.

8.0

Very good

8.0

Very good

Reviews

1 / 20

8.0

Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.

Delta

8.0

Very good

7,950 reviews

8.0

Very good

Reviews

1 / 20

8.0

Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.

United Airlines

7.4

Good

8,790 reviews

8.0

Very good

Reviews

1 / 20

8.0

Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.

American Airlines

7.2

Good

10,000 reviews

8.0

Very good

Reviews

1 / 20

8.0

Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.

Sun Country Air

6.9

Okay

345 reviews

8.0

Very good