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$416+ 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 4/9. Fares are subject to change and may not be available on all flights or dates of travel.
CMI — SAT
Feb 25 — Mar 41
Wed 2/25
Wed 3/4
1 adult, Economy
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Cheap flight deals from Champaign to San Antonio

Cheapest flights from Champaign to San Antonio
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 January 26, 2026.

This American Airlines deal was found by Cheapflights users on 1/24. 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.
Thu 4/96:47 pm
CMI
-
SAT
1 stop5h 07m
American Airlines
Mon 4/133:11 pm
SAT
-
CMI
1 stop5h 46m
American Airlines
Deal found 1/24$416
This American Airlines deal was found by Cheapflights users on 1/24. 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 2/212:54 pm
CMI
-
SAT
1 stop8h 00m
American Airlines
Mon 2/235:00 pm
SAT
-
CMI
1 stop4h 44m
American Airlines
Deal found 1/24$440
This American Airlines deal was found by Cheapflights users on 1/24. 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 5/2911:40 am
CMI
-
SAT
1 stop6h 19m
American Airlines
Sun 5/316:00 am
SAT
-
CMI
1 stop5h 10m
American Airlines
Deal found 1/24$459
This American Airlines deal was found by Cheapflights users on 1/26. 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 6/56:32 pm
CMI
-
SAT
1 stop5h 27m
American Airlines
Sun 6/76:00 am
SAT
-
CMI
1 stop5h 10m
American Airlines
Deal found 1/26$512
This American Airlines deal was found by Cheapflights users on 1/25. 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 2/132:54 pm
CMI
-
SAT
1 stop17h 29m
American Airlines
Mon 2/167:00 am
SAT
-
CMI
1 stop7h 24m
American Airlines
Deal found 1/25$549
This American Airlines deal was found by Cheapflights users on 1/26. 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 6/122:47 pm
CMI
-
SAT
1 stop4h 48m
American Airlines
Sun 6/1410:00 am
SAT
-
CMI
2 stops8h 02m
American Airlines
Deal found 1/26$678

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 January 26, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$416
(American Airlines)

Popular in

January

Cheapest in

September

Average price

$643
Provider with most accurate pricing for Champaign University-Willard-San Antonio flight deals.
Search Deals
Provider most trusted by Cheapflights users for Champaign University-Willard-San Antonio flights.
Search Deals
From Champaign University-Willard to San Antonio
Search Deals
Highest demand for flights based on searches. 16% potential increase in price ($98 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($18 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 2026
Search Deals

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 2,558,603 searches. Data last updated January 26, 2026.
Use the filters below to find and compare flights from Champaign to San Antonio that are best for you.

Fly from

Champaign

Fly to

San Antonio

Route

Depart

Return

Price

ChampaignSan Antonio

CMI - SAT

CMISAT

Champaign University-Willard

Thu 4/9

6:47 pm-11:54 pm

1 stop5h 07m

San Antonio

Mon 4/13

3:11 pm-8:57 pm

1 stop5h 46m

$416

ChampaignSan Antonio

CMI - SAT

CMISAT

Champaign University-Willard

Sat 2/21

2:54 pm-10:54 pm

1 stop8h 00m

San Antonio

Mon 2/23

5:00 pm-9:44 pm

1 stop4h 44m

$440

ChampaignSan Antonio

CMI - SAT

CMISAT

Champaign University-Willard

Fri 5/29

11:40 am-5:59 pm

1 stop6h 19m

San Antonio

Sun 5/31

6:00 am-11:10 am

1 stop5h 10m

$459

ChampaignSan Antonio

CMI - SAT

CMISAT

Champaign University-Willard

Fri 6/12

2:47 pm-7:35 pm

1 stop4h 48m

San Antonio

Sun 6/14

6:00 am-11:10 am

1 stop5h 10m

$512

ChampaignSan Antonio

CMI - SAT

CMISAT

Champaign University-Willard

Fri 6/5

6:32 pm-11:59 pm

1 stop5h 27m

San Antonio

Sun 6/7

5:40 pm-10:11 pm

1 stop4h 31m

$512

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/24

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 January.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • 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.
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.

Cheapflights Insights

Everything you need to know about your flight from Champaign to San Antonio

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

Currently, February is the cheapest month in which you can book a flight from Champaign to San Antonio (average of $177). Flying from Champaign to San Antonio in July is currently the most expensive (average of $297). 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.

How much does it cost to fly round-trip from Champaign to San Antonio?

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 January 26, 2026.
Get a feel of what it's like to fly with American Airlines from Champaign to San Antonio by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
American Airlines
7.2
Good
11,189 reviews

Comfort

7.2

Entertainment

6.9

Food

6.4

Crew

8.0

Boarding

7.5

Overall

7.2

Reviews

1 / 20
8.0
Excellent

Monica,Nov 2025

JAC - DFW

At least there was an option of entertainment on this flight.
American Airlines
7.2
Good
11,189 reviews
American Airlines
7.2
Good
11,189 reviews

Comfort

7.2

Entertainment

6.9

Food

6.4

Crew

8.0

Boarding

7.5

Overall

7.2

Reviews

1 / 20
8.0
Excellent

Monica,Nov 2025

JAC - DFW

At least there was an option of entertainment on this flight.

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.

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

    American Airlines can get you from Champaign to San Antonio in just under 5h 07m. Your travel time can differ by up to . Champaign and San Antonio are separated by a distance of 926 mi.

  • What is the cheapest airline to fly from Champaign to San Antonio round-trip?

    American Airlines, at $306, was found to be the cheapest airline from Champaign to San Antonio.. American Airlines is 36% cheaper than the average price of flights available within the next 90 days to this destination.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Champaign 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.

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

    Currently, February is the cheapest month in which you can book a flight from Champaign to San Antonio (average of $177). Flying from Champaign to San Antonio in July is currently the most expensive (average of $297). 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

Traveling to a place near San Antonio?

Book flights to San Antonio if you plan to visit one of these locations
New Braunfels
Kerrville

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Alternative routes for Champaign to San Antonio

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Top airline flying from Champaign to San Antonio

Discover the top airline that operate flights from Champaign 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 2,558,603 searches. Data last updated January 26, 2026.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$306Average$492FlexibilityNo cancel feeOn-time71%

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