$446+ Cheap flights from Champaign to San Antonio (CMI - SAT)
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/2. Fares are subject to change and may not be available on all flights or dates of travel.
CMI — SAT
Oct 9 — Oct 161
Round-trip
1 adult, Economy
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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
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
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 Champaign to San Antonio
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Best
Last-minute
Cheapest flights from Champaign to San AntonioExplore the most affordable flight options available from Champaign to San Antonio. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 9, 2026.
Explore the most affordable flight options available from Champaign to San Antonio. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 9, 2026.
This American Airlines deal was found by Cheapflights users on 9/6. 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.
Fri 10/26:41 pm -
1 stop5h 14m
Wed 10/73:09 pm -
1 stop5h 16m
Deal found 9/6![American Airlines logo]()
$446
This American Airlines deal was found by Cheapflights users on 9/7. 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.
Mon 11/912:13 pm -
1 stop5h 52m
Thu 11/122:55 pm -
1 stop7h 07m
Deal found 9/7![American Airlines logo]()
$1,210
Best flights from Champaign to San AntonioDiscover carefully curated flight deals from Champaign to San Antonio that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 9, 2026.
Discover carefully curated flight deals from Champaign to San Antonio that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 9, 2026.
This American Airlines deal was found by Cheapflights users on 9/6. 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.
Fri 10/21:23 pm -
2 stops9h 27m
Wed 10/73:09 pm -
1 stop5h 16m
Deal found 9/6![American Airlines logo]()
$452
This American Airlines deal was found by Cheapflights users on 9/7. 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.
Mon 11/912:13 pm -
1 stop5h 52m
Thu 11/122:55 pm -
1 stop7h 07m
Deal found 9/7![American Airlines logo]()
$1,210
Last-minute flights from Champaign to San AntonioDiscover last-minute flight deals from Champaign to San Antonio. Data last updated September 9, 2026 and is based on user searches.
Discover last-minute flight deals from Champaign to San Antonio. Data last updated September 9, 2026 and is based on user searches.
This American Airlines deal was found by Cheapflights users on 9/6. 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.
Fri 10/26:41 pm -
1 stop5h 14m
Wed 10/73:09 pm -
1 stop5h 16m
Deal found 9/6![American Airlines logo]()
$446
Find flight deals from Champaign to San Antonio
Discover tips and strategies to find the most affordable flight options for your journey from Champaign (CMI) to San Antonio (SAT). 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 September 9, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $446 (American Airlines) |
Cheapflights Fare Finder
Customize your flight search to find flights from Champaign 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 7,457,451 searches. Data last updated September 9, 2026.
Use the filters below to find and compare flights from Champaign to San Antonio that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
ChampaignSan Antonio
CMI Champaign University-Willard - SAT San Antonio
CMISAT
Champaign University-Willard
Fri 10/2
1:23 pm-10:50 pm
2 stops9h 27m
San Antonio
Wed 10/7
3:09 pm-8:25 pm
1 stop5h 16m
$452
Quickest round-trip
ChampaignSan Antonio
CMI Champaign University-Willard - SAT San Antonio
CMISAT
Champaign University-Willard
Mon 11/9
12:13 pm-6:05 pm
1 stop5h 52m
San Antonio
Thu 11/12
2:55 pm-10:02 pm
1 stop7h 07m
$1,210
Sorted by cheapest first
Compare providers for flights from Champaign to San Antonio
Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Champaign to San Antonio in September.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars |
- Most accurate provider: When it comes to deals on Champaign-San Antonio flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Champaign-San Antonio flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Champaign-San Antonio flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Champaign-San Antonio flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Champaign-San Antonio flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.
Best time to book a flight from Champaign to San Antonio
Have a flexible travel schedule? Discover the best time to fly to San Antonio from Champaign with our price prediction graph.
CMI-SAT
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.
Related info for your journey
Find useful and relevant information for your journey from Champaign to San Antonio. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Traveling to a place near San Antonio?
Book flights to San Antonio if you plan to visit one of these locationsNew Braunfels
Kerrville
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