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$53+ Cheap flights from Illinois to San Antonio (SAT)

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 1/13. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — SAT
Nov 10 — Nov 171
1 adult
Sun 11/10
Sun 11/17
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Find flight deals from Illinois to San Antonio

Cheapest flights from Illinois to San Antonio
Explore the most affordable flight options available from Illinois to San Antonio. Find the lowest fares from popular airlines and budget airlines, with prices last updated on November 5, 2024.

This CheapOair deal was found by Cheapflights users on 11/3. 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 12/116:46 pmSTL - SAT
1 stop17h 10mFrontier
Tue 12/175:24 pmSAT - STL
1 stop17h 20mFrontier
Deal found 11/3$118
This Frontier deal was found by Cheapflights users on 11/4. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/610:59 amORD - SAT
1 stop7h 11mFrontier
Sun 12/81:02 pmSAT - ORD
1 stop11h 37mFrontier
Deal found 11/4$142
This Trip.com deal was found by Cheapflights users on 11/4. 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 11/186:13 pmMDW - SAT
1 stop16h 51mFrontier
Mon 11/259:49 pmSAT - MDW
1 stop13h 55mFrontier
Deal found 11/4$145
This FareScan deal was found by Cheapflights users on 11/4. 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 FareScan is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/69:53 pmORD - SAT
1 stop15h 49mSpirit Airlines
Tue 12/108:00 amSAT - ORD
2 stops21h 30mSpirit Airlines
Deal found 11/4$151
This CheapOair deal was found by Cheapflights users on 11/4. 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.
Wed 11/611:10 pmORD - SAT
1 stop13h 12mMultiple Airlines
Wed 11/136:48 pmSAT - ORD
1 stop29h 24mMultiple Airlines
Deal found 11/4$174
This Delta deal was found by Cheapflights users on 11/3. 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.
Sat 12/73:26 pmSTL - SAT
1 stop8h 33mDelta
Tue 12/1011:50 amSAT - STL
1 stop6h 39mDelta
Deal found 11/3$228
This United Airlines deal was found by Cheapflights users on 11/4. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/2511:05 amSTL - SAT
1 stop4h 21mUnited Airlines
Fri 11/296:56 pmSAT - STL
1 stop4h 34mUnited Airlines
Deal found 11/4$248
This American Airlines deal was found by Cheapflights users on 11/3. 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.
Wed 12/44:27 pmMLI - SAT
1 stop6h 32mAmerican Airlines
Sat 12/76:00 amSAT - MLI
1 stop7h 25mAmerican Airlines
Deal found 11/3$253
This American Airlines deal was found by Cheapflights users on 11/5. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/106:00 amPIA - SAT
1 stop7h 33mAmerican Airlines
Tue 12/1710:39 amSAT - PIA
1 stop4h 25mAmerican Airlines
Deal found 11/5$258
This American Airlines deal was found by Cheapflights users on 11/4. 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.
Sat 12/215:29 pmSTL - SAT
1 stop6h 28mAmerican Airlines
Fri 12/276:00 amSAT - STL
1 stop5h 12mAmerican Airlines
Deal found 11/4$298
This Delta deal was found by Cheapflights users on 11/4. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/155:06 pmMLI - SAT
1 stop5h 33mDelta
Mon 11/184:28 pmSAT - MLI
1 stop5h 50mDelta
Deal found 11/4$328
This United Airlines deal was found by Cheapflights users on 11/4. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/55:35 pmPIA - SAT
1 stop5h 14mUnited Airlines
Sat 12/77:00 amSAT - PIA
1 stop7h 05mUnited Airlines
Deal found 11/4$328

Find flights from Illinois to San Antonio within your budget

Customize your flight search to find flights from Illinois 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 2,554,862 searches. Data last updated November 5, 2024.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

St. LouisSan Antonio

STL - SAT

STLSAT

Lambert-St Louis

Mon 1/6

7:43 am-4:51 pm

1 stop9h 08m

$54

ChicagoSan Antonio

ORD - SAT

ORDSAT

Chicago O'Hare Intl

Tue 12/10

9:10 pm-11:07 pm

2 stops25h 57m

$90

St. LouisSan Antonio

STL - SAT

STLSAT

Lambert-St Louis

Sat 12/7

5:00 pm-12:38 am

1 stop7h 38m

$114

St. LouisSan Antonio

STL - SAT

STLSAT

Lambert-St Louis

Tue 12/3

4:45 pm-11:10 pm

1 stop6h 25m

$149

ChicagoSan Antonio

MDW - SAT

MDWSAT

Chicago Midway

Tue 1/7

9:21 am-10:10 pm

2 stops12h 49m

$160

ChicagoSan Antonio

MDW - SAT

MDWSAT

Chicago Midway

Sat 12/21

6:49 pm-5:16 pm

1 stop22h 27m

$83

St. LouisSan Antonio

STL - SAT

STLSAT

Lambert-St Louis

Sun 5/4

7:51 pm-11:42 pm

1 stop3h 51m

$169

ChicagoSan Antonio

MDW - SAT

MDWSAT

Chicago Midway

Tue 12/24

4:55 pm-7:50 pm

Nonstop2h 55m

$179

ChicagoSan Antonio

ORD - SAT

ORDSAT

Chicago O'Hare Intl

Sun 12/8

7:25 am-11:56 am

1 stop28h 31m

$84

ChicagoSan Antonio

ORD - SAT

ORDSAT

Chicago O'Hare Intl

Mon 2/17

5:40 pm-9:10 am

1 stop15h 30m

$186

Flights are sorted by cheapest first

Deals found on 11/3

Showing 1-10 of 53 results
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Best time to book a flight from Illinois to San Antonio

Have a flexible travel schedule? Discover the best time to fly to San Antonio from Illinois 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.

Travel insights for flights from Illinois to San Antonio

Get recent, data-driven insights about flights from Illinois to San Antonio including ideal travel times, pricing trends, and more.

What is the cheapest month to book a flight from Illinois to San Antonio?

Currently, August is the cheapest month in which you can book a flight from Illinois to San Antonio (average of $295). Flying from Illinois 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 IL to SAT?

Find hourly flight availability from Illinois 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 November 5, 2024.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Illinois to San Antonio as you normally would.

Weekly flight availability from Illinois to San Antonio

Explore weekly flight availability from Illinois to San Antonio. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated November 5, 2024.

The most flights from USIL to SAT are scheduled on a Tuesday (15 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (7 on average).

Rainfall in San Antonio by month

Plan your trip to San Antonio by taking into account the average rainfall totals 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

Plan your trip to San Antonio by taking into account the average temperature totals 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

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 November 5, 2024.
Read reviews from past customers who have flown Frontier, Delta and United Airlines from Illinois 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.
Southwest
8.1
Very good
5,082 reviews

Crew

8.7

Boarding

8.3

Food

7.2

Comfort

8.1

Overall

8.1

Entertainment

7.7

Reviews

1 / 10

My first time, surprisingly good! It was a good ride overall. Coming from Singapore, this budget flight is better than the budget airline for our national carrier Singapore Airlines.

Southwest
8.1
Very good
5,082 reviews
Southwest
8.1
Very good
5,082 reviews

Crew

8.7

Boarding

8.3

Food

7.2

Comfort

8.1

Overall

8.1

Entertainment

7.7

Reviews

1 / 10

My first time, surprisingly good! It was a good ride overall. Coming from Singapore, this budget flight is better than the budget airline for our national carrier Singapore Airlines.

Alaska Airlines
8.0
Very good
9,421 reviews
Southwest
8.1
Very good
5,082 reviews

Crew

8.7

Boarding

8.3

Food

7.2

Comfort

8.1

Overall

8.1

Entertainment

7.7

Reviews

1 / 10

My first time, surprisingly good! It was a good ride overall. Coming from Singapore, this budget flight is better than the budget airline for our national carrier Singapore Airlines.

Delta
8.0
Very good
8,830 reviews
Southwest
8.1
Very good
5,082 reviews

Crew

8.7

Boarding

8.3

Food

7.2

Comfort

8.1

Overall

8.1

Entertainment

7.7

Reviews

1 / 10

My first time, surprisingly good! It was a good ride overall. Coming from Singapore, this budget flight is better than the budget airline for our national carrier Singapore Airlines.

United Airlines
7.4
Good
9,215 reviews
Southwest
8.1
Very good
5,082 reviews

Crew

8.7

Boarding

8.3

Food

7.2

Comfort

8.1

Overall

8.1

Entertainment

7.7

Reviews

1 / 10

My first time, surprisingly good! It was a good ride overall. Coming from Singapore, this budget flight is better than the budget airline for our national carrier Singapore Airlines.

American Airlines
7.2
Good
10,000 reviews
Southwest
8.1
Very good
5,082 reviews

Crew

8.7

Boarding

8.3

Food

7.2

Comfort

8.1

Overall

8.1

Entertainment

7.7

Reviews

1 / 10

My first time, surprisingly good! It was a good ride overall. Coming from Singapore, this budget flight is better than the budget airline for our national carrier Singapore Airlines.

Related info for your journey

Find useful and relevant information for your journey from Illinois to San Antonio. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

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

    Most people fly into San Antonio (SAT) if they book a flight to San Antonio from Illinois. San Antonio is conveniently located just 7.6 mi from San Antonio’s city center.

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

    Yes, there are multiple flights from Illinois to San Antonio for under $200. The cheapest flight booked recently is on Frontier for just $112, but on average you can expect to pay $276.

  • Are there nonstop flights from Illinois to San Antonio for under $400 on Cheapflights?

    Cheapflights has at least 4 direct flights from Illinois to San Antonio under $400. A good price for a nonstop flight from Illinois to San Antonio is less than $391.

  • Are there last-minute flights available from Illinois to San Antonio for under $200?

    There are currently 20+ open flights from Illinois to San Antonio within the next 7 days for less than $200.

  • What days are nonstop flights available from Illinois to San Antonio?

    You can find nonstop flights on the following days: Thursday.

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

    Travelers can expect 3 flights from Illinois to San Antonio on average per day.
    Morning (6am - Noon) - 100% of flight departures

  • How long is the flight from Illinois to San Antonio?

    Frontier, Spirit Airlines, and Delta can get you from Illinois to San Antonio in just under 7h 57m. Your travel time can differ by up to 16h 57m. The distance between Illinois and San Antonio is about 1048 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • What are the cheapest airlines to fly from Illinois to San Antonio one-way?

    For one-way options, check prices for Frontier. According to our data, you can fly for as low as $53. Users have also found prices from $70 and $114 on Spirit Airlines and Delta, respectively.

  • What are the most popular routes from Illinois to San Antonio?

    Most travelers choose Chicago O'Hare Intl - San Antonio, Chicago Midway - San Antonio or Lambert-St Louis - San Antonio when deciding on the best route from Illinois to San Antonio.

  • What are the most reliable airlines from Illinois to San Antonio?

    Before booking your flight to San Antonio from Illinois, check out the most reliable airlines to get you to your destination on time: SkyWest Airlines (98%), United Airlines (96%), Air Canada( 93%).

  • What are the cheapest flights from Illinois to San Antonio?

    While on average a flight from Illinois to San Antonio is generally $357, our data shows the cheapest flight currently is $115. When looking at the most popular route, (Chicago O'Hare Intl - San Antonio), you can expect to pay $151 for that flight.

  • What does ORD to SAT mean?

    These are just IATA (International Air Transport Association) codes. They are used in aviation to identify and differentiate airports. That’s why a Chicago O'Hare Intl Airport to San Antonio Airport flight would often be abbreviated as a ORD to SAT flight. Chicago Midway Airport (MDW), Moline Quad-City Airport (MLI), Greater Peoria Airport (PIA), Bloomington-Normal Airport (BMI), Champaign University-Willard Airport (CMI) are some additional IATA codes for airports related to your trip.

  • Can I find deals for flights from Illinois to San Antonio that include extra baggage allowance?

    The amount of baggage you can bring on your Illinois to San Antonio flight depends on the airline and the type of fare you've chosen. After entering your flight details, you'll be able to view the specific baggage policies for each deal in the search results. Keep in mind that certain deals may offer additional baggage allowance.

  • Can I find deals on flights from Illinois to San Antonio with specific airlines?

    Yes, Cheapflights allows you to browse and filter Illinois to San Antonio flight deals by airline. After entering your origin and destination, use the available filters to view flights offered by airlines.

  • Can I find deals for flights from Illinois to San Antonio that include hotel bookings?

    Yes. In addition to deals on Illinois to San Antonio flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Illinois to San Antonio?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Illinois to San Antonio.

  • Can I find deals for business class flights from Illinois to San Antonio?

    Yes. Cheapflights offers flight deals from Illinois to San Antonio by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • Can I find deals for flights from Illinois to San Antonio that allow pets onboard?

    Many airlines flying from Illinois to San Antonio offer the option to travel with pets. After selecting a flight deal, you can find more information about the airline's pet policy on their official website or by contacting the airline directly. Please note that additional fees and restrictions may apply.

  • Can I find deals on last-minute flights from Illinois to San Antonio?

    Yes, you can often find last-minute deals on Illinois to San Antonio flights on Cheapflights. However, these deals can vary and may not always be available. We recommend checking back frequently or signing up for price alerts for the most up-to-date deals.

  • How recently were the Illinois to San Antonio flight deals updated?

    The Illinois to San Antonio flight deals you see on this page were last updated on 11/5.

  • What is the cheapest month to book a flight from Illinois to San Antonio?

    Currently, August is the cheapest month in which you can book a flight from Illinois to San Antonio (average of $295). Flying from Illinois 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.

See more FAQs

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Top 5 airlines flying from Illinois to San Antonio

Discover the top 5 airlines that operate flights from Illinois 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 2,554,862 searches. Data last updated November 5, 2024.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$93Average$206FlexibilityNo cancel feeOn-time65%
FrontierCheapest$128Average$209FlexibilityNo cancel feeOn-time62%
American AirlinesCheapest$196Average$448FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$224Average$443FlexibilityNo cancel feeOn-time69%
DeltaCheapest$236Average$390FlexibilityNo cancel feeOn-timeN/A
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