Cheap flights from Chicago (CHI) to San Antonio (SAT) from $45

This is the cheapest one-way flight price, found on 9/28. Prices may vary by date and flight preferences.
CHI — SAT
Oct 3 — Oct 101

The best prices from Chicago to San Antonio are usually found in January or February, booked 31 days in advance, depart on a Tuesday or Saturday and return on a Monday

How to find the cheapest flight from Chicago (CHI) to San Antonio (SAT)

All the information you need to plan the best CHI to SAT flight in 2023: compare Chicago to San Antonio flight prices with the expected peak season, weather and rainfall in San Antonio.

Popular in

June

Cheapest in

January

Round-trip from

$294

One-way from

$88
High demand for flights, 15% potential price rise
Best time to find cheap flights, 10% potential price drop
From Chicago (CHI) to San Antonio
One-way flight from Chicago (CHI) to San Antonio

CHI - SAT

Price

$294 - $510

SAT

Temperature

51.8 - 84.2 °F

SAT

Rainfall

1.6 - 3.7 inches

What is the cheapest day to fly round-trip from Chicago to San Antonio?

Departing on a Monday is a good option for securing a great price. You can expect to save up to 18% when planning your travel around this day of the week.

How far in advance should I book a flight from Chicago to San Antonio?

Find a great deal and save up to 49% by booking at least 29 days prior to your desired departure date, rather than waiting until the week of travel. According to our data, there are a number of flights available from Chicago to San Antonio within the next two weeks, with the cheapest ticket starting at $455.

What is the cheapest month to fly from Chicago to San Antonio?

Due to multiple factors, expect to potentially pay more when booking in June. For low rates, January can be a great choice for travel to San Antonio. Flights to San Antonio from Chicago in January are about $384 on average during January, but can be found for as low as $168.

When is the cheapest time to fly from Chicago to San Antonio (CHI - SAT)?

It’s typically best to fly out from Chicago to San Antonio at noon. Doing so could potentially save you 29% on the flight price compared to flying in the afternoon, which is usually more expensive.

Cheap Spirit Airlines flights from Chicago to San Antonio

Check out some of the cheapest Spirit Airlines flights we've come across from Chicago to San Antonio. Make sure to double check the flight details before booking.
  • If you’re traveling from Chicago to San Antonio, one of the more common airlines traveling that route is Spirit Airlines. Chicago to San Antonio flights are typically 31% cheaper than other airlines traveling the same route. Flights from Spirit Airlines typically cost $375.80 RT. The cheapest Spirit Airlines flight found for this route was $208. When traveling from Chicago to San Antonio on Spirit Airlines, the most popular airport to depart from is Chicago O'Hare Intl Airport and the most popular airport to arrive at is San Antonio Airport. When flying from Chicago to San Antonio, Spirit Airlines flights are 7% more popular than any other airline flying that same route.

Cheap Frontier flights from Chicago to San Antonio

Have a look at some of the cheapest available Frontier flights departing from Chicago and landing in San Antonio. Make sure to examine the flight information before completing your reservation.
  • One of the most popular airlines traveling from Chicago to San Antonio is Frontier. Flights from Frontier traveling this route typically cost $375.80 RT. This price is typically 31% cheaper than other airlines that offer Chicago to San Antonio flights. When booking this route, the cheapest RT price found was $202. Chicago O'Hare Intl Airport is the most common Chicago airport to take off from when flying to San Antonio. San Antonio Airport is the most popular arrival airport in San Antonio. When flying from Chicago to San Antonio, Frontier flights are 4% more popular than any other airline flying that same route.

Cheap Chicago to San Antonio flights in September & October 2023

The best prices found for CHI to SAT flights for September, October
The lowest fares we've come across on flights traveling from Chicago to San Antonio in September and October 2023. More deals are always being added, so be sure to check back regularly.

Chicago to San Antonio 2023 flight deals

Cheap flights to San Antonio from Chicago found for this year
The lowest fares we've come across on flights traveling from Chicago to San Antonio in September and October 2023. More deals are always being added, so be sure to check back regularly.

Non-stop flights to San Antonio from Chicago

Save time with Chicago to San Antonio direct flight deals
For a quicker trip, book one of these direct flights from Chicago to San Antonio. Those looking to potentially save on 1 or 2-stop flights from Chicago to San Antonio should utilize the search form at the the top of the page.

Chicago to San Antonio flights leaving soon

Late deals on return flights to San Antonio from Chicago, departing today and this week
Check out these flights departing soon from Chicago to San Antonio. To prevent any unwanted surprises, users should verify their flight info before booking.

One-way flights to San Antonio from Chicago

The cheapest one-way flights from Chicago to San Antonio
Some of the best available deals we've found on one-way flights from Chicago to San Antonio. Users in need of a round-trip flight from Chicago to San Antonio instead should update the search form at the top of page.

Find flights from Chicago to San Antonio within your budget

Use the slider to find flights from Chicago to San Antonio that fit your budget.

Fly from

Any airport

Fly to

Any airport

Budget

$117 - $218

Route

Depart

Return

Price

Chicago O'Hare IntlSan Antonio

ORD - SAT

ORDSAT

Chicago O'Hare Intl

Sat 10/28

1 stop14h 16m

San Antonio

Sat 11/4

1 stop13h 35m

Chicago O'Hare IntlSan Antonio

ORD - SAT

ORDSAT

Chicago O'Hare Intl

Mon 10/30

1 stop11h 40m

San Antonio

Mon 11/6

1 stop10h 00m

Chicago MidwaySan Antonio

MDW - SAT

MDWSAT

Chicago Midway

Tue 10/31

1 stop13h 04m

San Antonio

Wed 11/1

1 stop14h 54m

Chicago O'Hare IntlSan Antonio

ORD - SAT

ORDSAT

Chicago O'Hare Intl

Tue 10/31

1 stop11h 09m

San Antonio

Wed 11/1

1 stop13h 35m

Chicago MidwaySan Antonio

MDW - SAT

MDWSAT

Chicago Midway

Tue 10/10

1 stop28h 16m

San Antonio

Sat 10/14

1 stop18h 57m

Chicago O'Hare IntlSan Antonio

ORD - SAT

ORDSAT

Chicago O'Hare Intl

Mon 10/30

1 stop11h 40m

San Antonio

Thu 11/2

1 stop13h 35m

Chicago O'Hare IntlSan Antonio

ORD - SAT

ORDSAT

Chicago O'Hare Intl

Wed 11/1

Nonstop3h 05m

San Antonio

Fri 11/3

Nonstop2h 46m

Chicago O'Hare IntlSan Antonio

ORD - SAT

ORDSAT

Chicago O'Hare Intl

Thu 11/2

1 stop8h 08m

San Antonio

Sun 11/5

1 stop7h 48m

Chicago O'Hare IntlSan Antonio

ORD - SAT

ORDSAT

Chicago O'Hare Intl

Wed 1/17

1 stop5h 49m

San Antonio

Sat 1/20

1 stop5h 33m

Flights are sorted by cheapest first

Deals found on 9/28

Reviews of airlines servicing San Antonio

Get a feel of what it's like to fly with Spirit Airlines, Frontier and United Airlines from Chicago to San Antonio by reading reviews from past customers. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Delta
7.9
Good
3,035 reviews

Overall

7.9

Crew

8.5

Comfort

7.9

Food

7.2

Entertainment

7.8

Boarding

8.1

Reviews

1 / 10

I think I will only fly this airline from now on.

Delta
7.9
Good
3,035 reviews
Delta
7.9
Good
3,035 reviews

Overall

7.9

Crew

8.5

Comfort

7.9

Food

7.2

Entertainment

7.8

Boarding

8.1

Reviews

1 / 10

I think I will only fly this airline from now on.

Southwest
7.7
Good
1,522 reviews
Delta
7.9
Good
3,035 reviews

Overall

7.9

Crew

8.5

Comfort

7.9

Food

7.2

Entertainment

7.8

Boarding

8.1

Reviews

1 / 10

I think I will only fly this airline from now on.

United Airlines
7.4
Good
1,890 reviews
Delta
7.9
Good
3,035 reviews

Overall

7.9

Crew

8.5

Comfort

7.9

Food

7.2

Entertainment

7.8

Boarding

8.1

Reviews

1 / 10

I think I will only fly this airline from now on.

VivaAerobus
7.3
Good
259 reviews
Delta
7.9
Good
3,035 reviews

Overall

7.9

Crew

8.5

Comfort

7.9

Food

7.2

Entertainment

7.8

Boarding

8.1

Reviews

1 / 10

I think I will only fly this airline from now on.

American Airlines
7.2
Good
2,649 reviews
Delta
7.9
Good
3,035 reviews

Overall

7.9

Crew

8.5

Comfort

7.9

Food

7.2

Entertainment

7.8

Boarding

8.1

Reviews

1 / 10

I think I will only fly this airline from now on.

Related info for your journey

Useful info, stats and facts about Chicago to San Antonio flights.

What airport do you fly into for flights to San Antonio from Chicago?

San Antonio (SAT) is the airport you will fly into if you book a flight from Chicago to San Antonio. You should not have trouble finding flights to San Antonio from Chicago; the airport handles an average of 15 inbound flights from Chicago per day. You should also have plenty of airline options to choose from since 5 airlines have flights to the San Antonio airport from Chicago. It is only a 7.6 mi journey from San Antonio (SAT) to San Antonio’s city center.

Can I find flights from Chicago to San Antonio for under $200 on Cheapflights?

Yes, there are multiple flights from Chicago to San Antonio for under $200. The cheapest flight booked recently is on Spirit Airlines for just $117, but on average you can expect to pay $132.

Are there nonstop flights from Chicago to San Antonio for under $200 on Cheapflights?

Cheapflights has at least 20 direct flights from Chicago to San Antonio under $200. A good price for a nonstop flight from Chicago to San Antonio is less than $276.

Are there last-minute flights available from Chicago to San Antonio for under $300?

There are currently 20+ open flights from Chicago to San Antonio within the next 7 days for less than $300.

What days are nonstop flights available from Chicago to San Antonio?

Nonstop flights can be found on the following days: Sunday, Monday, Tuesday, Thursday, Friday, Saturday.

How many flights depart from Chicago to San Antonio on average per day?

25 flight departures from Chicago to San Antonio per day on average.
Morning (6am - Noon) - 16% of flight departures
Evening (6pm - Midnight) - 84% of flight departures

How long is the flight from Chicago to San Antonio?

Departing from Chicago to San Antonio will take you 3h 05m. The distance between Chicago and San Antonio is about 1048 mi. This flight may include one or multiple stops.

What are the cheapest airlines flying from Chicago to San Antonio round-trip?

Cheapflights users have booked flights from Chicago to San Antonio round-trip from $117. Other airlines that can offer you cheap pricing are Frontier, from $118, and United Airlines, from $144. Spirit Airlines is priced at 69% lower than the current average price of a flight leaving 3 months from now.

What are the most popular airlines that fly from Chicago to San Antonio?

What are the most reliable airlines from Chicago to San Antonio?

Consider Japan Airlines (89%), British Airways (89%) or Qatar Airways (86%) when booking your flight. These represent the most reliable airlines when flying from Chicago to San Antonio.

What are the cheapest flights from Chicago to San Antonio?

Looking at all options, your cheapest flight can be booked for $98. While the most popular route (Chicago O'Hare Intl - San Antonio) can be booked for $117 on average our data indicates $280 when flying from Chicago to San Antonio.

What does ORD to SAT mean?

Great question - ORD to SAT just means Chicago O'Hare Intl Airport to San Antonio Airport. Now you’ll know what these unique codes when you look for flights! This flight route has multiple associated airports, so we think it might be helpful to learn the name and codes of them as well. They are Chicago Midway Airport (MDW), Chicago Greater Rockford Airport (RFD).

Top 5 airlines flying from Chicago to San Antonio

The chart below displays the airlines Cheapflights users traveling from Chicago to San Antonio choose most often. Cheapest and average prices are based on aggregated data from the past 12 months.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$144Average$206FlexibilityNo cancel feeOn-time65%
Search Spirit Airlines flights
FrontierCheapest$151Average$196FlexibilityNo cancel feeOn-time62%
Search Frontier flights
American AirlinesCheapest$202Average$376FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
United AirlinesCheapest$208Average$376FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
DeltaCheapest$266Average$526FlexibilityNo cancel feeOn-timeN/A
Search Delta flights

Hourly flight availability from Chicago to San Antonio

See what time of day planes typically take off from Chicago to San Antonio
1%of flight departuresEarly morningMidnight to 6 am
26%of flight departuresMorning6 am to noon
43%of flight departuresAfternoonNoon to 6 pm
30%of flight departuresEvening6 pm to midnight
Midnight
6 AM
Noon
6 PM

Weekly flight availability from Chicago to San Antonio

See how many times per day planes take to the skies headed from Chicago to San Antonio
Sunday19daily flights
Monday20daily flights
Tuesday9daily flights
Wednesday9daily flights
Thursday14daily flights
Friday19daily flights
Saturday16daily flights

Fly with Cheapflights

What makes Cheapflights the go-to destination for all your flight needs

How does Cheapflights help users find flights from Chicago to San Antonio?

Cheapflights makes it easy to find Chicago to San Antonio flights by helping our users search from 900+ travel sites for deals. We also provide you with filters for cabin, price, airline, airports, number of stops, and many more to narrow down that perfect flight.

Why should you use Cheapflights to find cheap flight tickets from Chicago to San Antonio?

Millions of users choose and trust Cheapflights to book the best flight deals from Chicago to San Antonio for free. We help you search and compare prices from hundreds of airlines for the right flight just for you.

Can Cheapflights find flights from Chicago to San Antonio with no change fees?

Certainly. Search results for flights to San Antonio from Chicago shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

Can Cheapflights notify me if prices for flights from Chicago to San Antonio become cheaper?

Not ready to book yet? You can track prices for flights from Chicago to San Antonio on Cheapflights with our Price Alert feature and get notified when better prices are available.

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