$61+ Cheap flights from San Antonio (SAT) to Illinois
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 3/17. Fares are subject to change and may not be available on all flights or dates of travel.
Find cheap flights from San Antonio to Illinois 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
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Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from San Antonio to Illinois
Discover tips and strategies to find the most affordable flight options for your journey from San Antonio (SAT) to Illinois (USIL). 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 January 17, 2025.
Round-trip from | $118 (Mytrip) |
|---|---|
One-way from | $61 (Frontier) |
Find flight deals from San Antonio to Illinois
Cheapest flights from San Antonio to IllinoisExplore the most affordable flight options available from San Antonio to Illinois. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 17, 2025.
Explore the most affordable flight options available from San Antonio to Illinois. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 17, 2025.
This Mytrip deal was found by Cheapflights users on 1/16. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This CheapOair deal was found by Cheapflights users on 1/16. 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.
This American Airlines deal was found by Cheapflights users on 1/15. 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.
This United Airlines deal was found by Cheapflights users on 1/16. 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.
This Delta deal was found by Cheapflights users on 1/16. 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.
This American Airlines deal was found by Cheapflights users on 1/16. 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.
This American Airlines deal was found by Cheapflights users on 1/15. 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.
This United Airlines deal was found by Cheapflights users on 1/15. 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.
This Mytrip deal was found by Cheapflights users on 1/16. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This Frontier deal was found by Cheapflights users on 1/16. 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.
This American Airlines deal was found by Cheapflights users on 1/16. 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.
This Southwest deal was found by Cheapflights users on 1/15. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Find flights from San Antonio to Illinois within your budget
Customize your flight search to find flights from San Antonio to Illinois 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 2,558,603 searches. Data last updated January 17, 2025.
Fly from
Fly to
Route
Depart
Return
Price
San AntonioSt. Louis
SAT - STL
SATSTL
San Antonio
Mon 2/3
7:15 pm-11:31 pm
1 stop28h 16m
Lambert-St Louis
Thu 2/6
8:31 pm-7:35 pm
1 stop23h 04m
San AntonioSt. Louis
SAT - STL
SATSTL
San Antonio
Thu 2/13
5:58 pm-10:08 pm
1 stop28h 10m
Lambert-St Louis
Thu 2/20
4:00 pm-10:22 am
1 stop18h 22m
San AntonioSt. Louis
SAT - STL
SATSTL
San Antonio
Sat 2/8
6:00 am-2:07 pm
1 stop8h 07m
Lambert-St Louis
Tue 2/11
5:03 am-9:22 am
1 stop4h 19m
San AntonioSt. Louis
SAT - STL
SATSTL
San Antonio
Sat 4/12
7:00 am-12:20 pm
1 stop5h 20m
Lambert-St Louis
Tue 4/15
3:40 pm-11:18 pm
2 stops7h 38m
San AntonioSt. Louis
SAT - STL
SATSTL
San Antonio
Sat 2/15
11:03 am-3:34 pm
1 stop4h 31m
Lambert-St Louis
Sun 2/16
4:40 pm-12:27 am
1 stop7h 47m
San AntonioMoline
SAT - MLI
SATMLI
San Antonio
Sat 2/8
6:00 am-10:53 am
1 stop4h 53m
Moline Quad-City
Sun 2/9
5:00 am-11:17 am
1 stop6h 17m
San AntonioPeoria
SAT - PIA
SATPIA
San Antonio
Wed 2/12
7:48 am-3:50 pm
1 stop8h 02m
Greater Peoria
Tue 2/18
4:40 pm-11:50 pm
1 stop7h 10m
San AntonioMoline
SAT - MLI
SATMLI
San Antonio
Sat 2/15
1:18 pm-8:53 pm
1 stop7h 35m
Moline Quad-City
Fri 2/21
3:34 pm-11:10 pm
1 stop7h 36m
San AntonioChicago
SAT - ORD
SATORD
San Antonio
Sun 3/2
11:17 am-11:05 am
3 stops23h 48m
Chicago O'Hare Intl
Sun 3/9
7:42 pm-10:03 am
1 stop14h 21m
San AntonioChicago
SAT - MDW
SATMDW
San Antonio
Fri 2/21
5:58 pm-5:21 am
1 stop11h 23m
Chicago Midway
Sun 2/23
6:40 am-1:18 pm
1 stop6h 38m
Best time to book a flight from San Antonio to Illinois
Have a flexible travel schedule? Discover the best time to fly to Illinois from San Antonio with our price prediction graph.
Travel insights for flights from San Antonio to Illinois
Get recent, data-driven insights about flights from San Antonio to Illinois including ideal travel times, pricing trends, and more.
What is the cheapest month to book a flight from San Antonio to Illinois?
Currently, August is the cheapest month in which you can book a flight from San Antonio to Illinois (average of $245). Flying from San Antonio to Illinois in March is currently the most expensive (average of $320). 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 SAT to IL?
Find hourly flight availability from San Antonio to Illinois. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated January 17, 2025.
When flying from San Antonio to Illinois, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.
Weekly flight availability from San Antonio to Illinois
Explore weekly flight availability from San Antonio to Illinois. 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 January 17, 2025.
The most flights from SAT to USIL are scheduled on a Thursday (14 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (2 on average).
Rainfall in Illinois by month
Plan your trip to Illinois by taking into account the average rainfall totals by month.
In terms of precipitation, rainfall in Illinois ranges from 1.7 - 4.9 inches per month. August is typically the wettest month, when rainfall can reach 4.9 in. January is typically the driest time to visit Illinois when rainfall is around 1.7 in.
Temperature in Illinois by month
Plan your trip to Illinois by taking into account the average temperature totals by month.
If weather is an important factor for your trip to Illinois, 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 73.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 23.0 F).
Reviews of airlines servicing Illinois
Get insights into the airlines that provide service to Illinois. 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 Illinois. Reviews last updated January 17, 2025.
To help decide which airline to fly from San Antonio to Illinois, see what other customers have to say about Spirit Airlines, American Airlines and Southwest. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Boarding
Food
Overall
Entertainment
Comfort
Crew
Reviews
Wish the there were an electrical outlet to plug the phone. it died within 10 minutes of being in the air.
Boarding
Food
Overall
Entertainment
Comfort
Crew
Reviews
Wish the there were an electrical outlet to plug the phone. it died within 10 minutes of being in the air.
Boarding
Food
Overall
Entertainment
Comfort
Crew
Reviews
Wish the there were an electrical outlet to plug the phone. it died within 10 minutes of being in the air.
Boarding
Food
Overall
Entertainment
Comfort
Crew
Reviews
Wish the there were an electrical outlet to plug the phone. it died within 10 minutes of being in the air.
Boarding
Food
Overall
Entertainment
Comfort
Crew
Reviews
Wish the there were an electrical outlet to plug the phone. it died within 10 minutes of being in the air.
Boarding
Food
Overall
Entertainment
Comfort
Crew
Reviews
Wish the there were an electrical outlet to plug the phone. it died within 10 minutes of being in the air.
Related info for your journey
Find useful and relevant information for your journey from San Antonio to Illinois. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
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Alternative routes for San Antonio to Illinois
See prices for flight routes from nearby airports that may be better suited for you.
Top 6 airlines flying from San Antonio to Illinois
Discover the top 6 airlines that operate flights from San Antonio to Illinois. 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 2,558,603 searches. Data last updated January 17, 2025.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$111 | Average$222 | FlexibilityNo cancel fee | On-time65% | |
| Cheapest$112 | Average$189 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$190 | Average$410 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$222 | Average$428 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$226 | Average$412 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$258 | Average$396 | FlexibilityNo cancel fee | On-timeN/A |