$56 Cheap Flights from Chicago (ORD) to San Antonio (SAT)

View $56 flight on Thu, Dec 11, 2025Opens in a new window

Popular airlines from Chicago O'Hare Intl. Airport (ORD) to San Antonio International Airport (SAT)

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Cheap Flights from Chicago to San Antonio (ORD-SAT)

Prices were available within the past 7 days and start at $56 for one-way flights and $120 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Frontier Airlines
Thu, Dec 4 - Mon, Dec 8
ORD
Chicago
SAT
San Antonio
$120 Roundtrip, just found
$120
Roundtrip
just found
Select Frontier Airlines flight, departing Thu, Dec 4 from Chicago to San Antonio, returning Mon, Dec 8, priced at $120 just found
Spirit Airlines
Wed, Nov 19 - Thu, Nov 20
ORD
Chicago
SAT
San Antonio
$124 Roundtrip, found 11 hours ago
$124
Roundtrip
found 11 hours ago
Select Spirit Airlines flight, departing Wed, Nov 19 from Chicago to San Antonio, returning Thu, Nov 20, priced at $124 found 11 hours ago
Frontier Airlines
Thu, Dec 11 - Mon, Dec 15
ORD
Chicago
SAT
San Antonio
$130 Roundtrip, found 5 hours ago
$130
Roundtrip
found 5 hours ago
Select Frontier Airlines flight, departing Thu, Dec 11 from Chicago to San Antonio, returning Mon, Dec 15, priced at $130 found 5 hours ago
Spirit Airlines
Tue, Dec 2 - Mon, Dec 8
ORD
Chicago
SAT
San Antonio
$132 Roundtrip, found 1 hour ago
$132
Roundtrip
found 1 hour ago
Select Spirit Airlines flight, departing Tue, Dec 2 from Chicago to San Antonio, returning Mon, Dec 8, priced at $132 found 1 hour ago
Frontier Airlines
Sat, Nov 15 - Tue, Nov 18
ORD
Chicago
SAT
San Antonio
$136 Roundtrip, found 7 hours ago
$136
Roundtrip
found 7 hours ago
Select Frontier Airlines flight, departing Sat, Nov 15 from Chicago to San Antonio, returning Tue, Nov 18, priced at $136 found 7 hours ago
Frontier Airlines
Thu, Dec 4 - Thu, Dec 11
ORD
Chicago
SAT
San Antonio
$138 Roundtrip, found 15 hours ago
$138
Roundtrip
found 15 hours ago
Select Frontier Airlines flight, departing Thu, Dec 4 from Chicago to San Antonio, returning Thu, Dec 11, priced at $138 found 15 hours ago
Spirit Airlines
Tue, Nov 18 - Wed, Nov 19
ORD
Chicago
SAT
San Antonio
$140 Roundtrip, found 11 hours ago
$140
Roundtrip
found 11 hours ago
Select Spirit Airlines flight, departing Tue, Nov 18 from Chicago to San Antonio, returning Wed, Nov 19, priced at $140 found 11 hours ago
American Airlines
Tue, Dec 2 - Tue, Dec 16
ORD
Chicago
SAT
San Antonio
$225 Roundtrip, found 3 days ago
$225
Roundtrip
found 3 days ago
Select American Airlines flight, departing Tue, Dec 2 from Chicago to San Antonio, returning Tue, Dec 16, priced at $225 found 3 days ago
Southwest Airlines
Sat, Jan 10 - Sat, Jan 17
ORD
Chicago
SAT
San Antonio
$296 Roundtrip, found 23 hours ago
$296
Roundtrip
found 23 hours ago
Select Southwest Airlines flight, departing Sat, Jan 10 from Chicago to San Antonio, returning Sat, Jan 17, priced at $296 found 23 hours ago
Delta
Mon, Feb 23 - Wed, Mar 18
ORD
Chicago
SAT
San Antonio
$302 Roundtrip, found 2 days ago
$302
Roundtrip
found 2 days ago
Select Delta flight, departing Mon, Feb 23 from Chicago to San Antonio, returning Wed, Mar 18, priced at $302 found 2 days ago

Find the cheapest month to fly from Chicago (ORD) to San Antonio (SAT)

November is typically the cheapest month to fly

From $128 - $345 per traveler.

Alternative airports near San Antonio

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to San Antonio Intl. SAT. Cheapest and Closest option available. Average driving time to city center is 11 minutes. Flights from $225
SAT
San Antonio Intl.
CheapestClosest
Average driving time to city center11 min
Flights from $225
Flights from Chicago (ORD) to San Antonio (SAT)
Origin airport
O'Hare Intl.
Destination airport
San Antonio Intl.
Airlines serving
Alaska Airlines, American Airlines, Delta, Frontier Airlines, Hawaiian Airlines, Southwest Airlines, Spirit Airlines, United
Roundtrip price
$120
Distance
1042 mi
Average flight time
3 hours 13 mins

Chicago to San Antonio Flights

The cheapest times to fly from Chicago to San Antonio

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Chicago to San Antonio are during the month of December. You can find some of the cheapest flights from Chicago to San Antonio with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Chicago to San Antonio

Sunday is one of the best days to book for cheap flights from Chicago to San Antonio: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Chicago to San Antonio

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Chicago to San Antonio in 2025. You can also book with separate airlines for your outbound and return journeys, from $56 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Chicago to San Antonio flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Chicago to San Antonio airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Frequently asked questions

How much does a flight from O'Hare Intl. Airport (ORD) to San Antonio Intl. Airport (SAT) cost?
Get a cheap one-way flight from $56 or cheap return flight from $120 from O'Hare Intl. Airport (ORD) to San Antonio Intl. Airport (SAT) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight offers on this route.
What is the cheapest month to fly from O'Hare Intl. Airport (ORD) to San Antonio Intl. Airport (SAT)?
The cheapest month to fly from ORD to SAT is December, when demand is low. Off-peak season is usually when airlines offer lower prices between these airports.
Which airlines fly direct from O'Hare Intl. Airport (ORD) to San Antonio Intl. Airport (SAT)?
When flying out of O'Hare Intl. Airport (ORD), you can board a direct flight to San Antonio Intl. Airport (SAT) with United Airlines.
What is the cheapest airline that flies from O'Hare Intl. Airport (ORD) to San Antonio Intl. Airport (SAT)?
The cheapest airline to offer flights between O'Hare Intl. Airport (ORD) and San Antonio Intl. Airport (SAT) can vary based on your travel plans. American Airlines and United Airlines are just some well-known options offering competitive fares. Use Expedia's filter tool to compare airlines in one place and find the right ORD to SAT flight for your budget.
How many flights per day from O'Hare Intl. Airport (ORD) to San Antonio Intl. Airport (SAT)?
Each day on average, 3 nonstop flights operate from O'Hare Intl. Airport (ORD) to San Antonio Intl. Airport (SAT). Select the departure time that best fits your schedule.
What are the most popular departure times for flights from O'Hare Intl. Airport (ORD) to San Antonio Intl. Airport (SAT)?
Flights between ORD and SAT are busiest at 8 PM. If you want a more relaxed atmosphere and potentially cheaper prices, look for a time when demand is lower.
What day of the week has the most flights from ORD to SAT?
If you depart on a Friday, you'll get the biggest range of choices for flights from O'Hare Intl. Airport (ORD) to San Antonio Intl. Airport (SAT).
What is the earliest flight from O'Hare Intl. Airport (ORD) to San Antonio Intl. Airport (SAT)?
Hop on the earliest flight at around 9:15AM UTC-6, leaving from O'Hare Intl. Airport (ORD). You'll be flying for roughly 3h 14m, reaching San Antonio Intl. Airport (SAT) at approximately 12:29PM UTC-6.
How long does it take to fly from O'Hare Intl. Airport (ORD) to San Antonio Intl. Airport (SAT)?
Flights from ORD to SAT have an average travel time of 3 hours and 10 minutes. The total distance between the two airports is 1,050 mi.
What airline has the least delays from ORD to SAT?
With 82% of journeys usually arriving as scheduled, United Airlines has the best on-time performance for direct flights from O'Hare Intl. Airport (ORD) to San Antonio Intl. Airport (SAT). To monitor your flight status and get notified about any changes, simply head to the Expedia App.
What is the best time to fly from O'Hare Intl. Airport (ORD) to San Antonio Intl. Airport (SAT)?
Select a flight from O'Hare Intl. Airport (ORD) to San Antonio Intl. Airport (SAT) that leaves before 3 PM to reduce the likelihood of delays and cancellations. Later departures have a 22% higher chance of being canceled, on average.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
What airports do you fly into for San Antonio from O'Hare Intl. Airport (ORD)?
Check out your flight options from O'Hare Intl. Airport (ORD) to San Antonio Intl. Airport (SAT). This is the only San Antonio airport you can fly into if you're taking a direct flight.
Is it cheaper to buy a plane ticket from O'Hare Intl. Airport (ORD) to San Antonio Intl. Airport (SAT) last-minute?
Holding off until just before your trip to book a ticket from ORD to SAT generally means paying more. While it's possible to find some last-minute deals, there's no guarantee. Keep your travel plans flexible to maximize your chances of snagging a bargain.
Is it cheaper to book an ORD to SAT flight and hotel package?
Securing an ORD to SAT flight and hotel package tends to be cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your travels in one place. Pick from our extensive range of stays and then add car rentals, activities and flights to your booking. Bundle it all together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from O'Hare Intl. Airport (ORD) to San Antonio Intl. Airport (SAT)?
In most cases, you can cancel or modify your ORD to SAT flight. However, there may be additional charges, especially if you made your booking over 24 hours ago. Double-check your itinerary for the airline's guidelines and fees on flight changes, or if you'd like more details, head to our Customer Service portal.

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