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$258+ Cheap flights from Champaign to San Antonio (CMI - 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 4/27. Fares are subject to change and may not be available on all flights or dates of travel.
CMI — SAT
Apr 12 — Apr 191
Sun 4/12
Sun 4/19
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 March 13, 2026.

This United Airlines deal was found by Cheapflights users on 3/8. 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.
Fri 5/296:30 am
CMI
-
SAT
1 stop5h 42m
United Airlines
Sun 5/316:40 am
SAT
-
CMI
1 stop6h 10m
United Airlines
Deal found 3/8$358
This United Airlines deal was found by Cheapflights users on 3/8. 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.
Sat 8/291:32 pm
CMI
-
SAT
2 stops9h 06m
United Airlines
Wed 9/26:40 am
SAT
-
CMI
1 stop6h 10m
United Airlines
Deal found 3/8$364
This United Airlines deal was found by Cheapflights users on 3/8. 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.
Fri 6/129:49 am
CMI
-
SAT
1 stop6h 14m
United Airlines
Sun 6/145:18 pm
SAT
-
CMI
1 stop6h 41m
United Airlines
Deal found 3/8$373
This United Airlines deal was found by Cheapflights users on 3/10. 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.
Fri 6/56:30 am
CMI
-
SAT
1 stop5h 42m
United Airlines
Sun 6/76:40 am
SAT
-
CMI
1 stop6h 10m
United Airlines
Deal found 3/10$378

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 March 13, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$358
(United Airlines)

One-way from

$258
(American Airlines)

Popular in

April

Cheapest in

September

Average price

$526
Provider with most accurate pricing for Champaign University-Willard-San Antonio flight deals.
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Provider most trusted by Cheapflights users for Champaign University-Willard-San Antonio flights.
Search Deals
From Champaign University-Willard to San Antonio
Search Deals
One-way flight from Champaign University-Willard to San Antonio
Search Deals
Highest demand for flights based on searches. 10% potential increase in price ($51 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($12 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in March 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 March 13, 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

Price

Cheapest round-trip
Quickest round-trip

ChampaignSan Antonio

CMI - SAT

CMISAT

Champaign University-Willard

Fri 5/29

6:30 am-12:12 pm

1 stop5h 42m

San Antonio

Sun 5/31

6:40 am-12:50 pm

1 stop6h 10m

$358

ChampaignSan Antonio

CMI - SAT

CMISAT

Champaign University-Willard

Fri 6/5

9:49 am-4:03 pm

1 stop6h 14m

San Antonio

Sun 6/7

6:40 am-12:50 pm

1 stop6h 10m

$358

ChampaignSan Antonio

CMI - SAT

CMISAT

Champaign University-Willard

Sat 8/29

9:49 am-4:08 pm

1 stop6h 19m

San Antonio

Wed 9/2

6:40 am-12:50 pm

1 stop6h 10m

$358

ChampaignSan Antonio

CMI - SAT

CMISAT

Champaign University-Willard

Fri 6/12

6:30 am-12:12 pm

1 stop5h 42m

San Antonio

Sun 6/14

6:40 am-12:50 pm

1 stop6h 10m

$378
Cheapest one-way
Quickest one-way

ChampaignSan Antonio

CMI - SAT

CMISAT

Champaign University-Willard

Mon 4/27

6:58 pm-11:59 pm

1 stop5h 01m

$258

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/8

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 March.
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, April is the cheapest month in which you can book a flight from Champaign to San Antonio (average of $198). Flying from Champaign to San Antonio in March is currently the most expensive (average of $321). 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.

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 March 13, 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
7.1
Good
11,449 reviews

Food

6.4

Overall

7.1

Crew

7.9

Boarding

7.5

Comfort

7.2

Entertainment

6.9

Reviews

1 / 20
8.0
Excellent

Monica,Nov 2025

JAC - DFW

At least there was an option of entertainment on this flight.
American Airlines
7.1
Good
11,449 reviews
American Airlines
7.1
Good
11,449 reviews

Food

6.4

Overall

7.1

Crew

7.9

Boarding

7.5

Comfort

7.2

Entertainment

6.9

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?

    United Airlines can get you from Champaign to San Antonio in just under 5h 42m. 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 32% 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, April is the cheapest month in which you can book a flight from Champaign to San Antonio (average of $198). Flying from Champaign to San Antonio in March is currently the most expensive (average of $321). 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

See prices for flight routes from nearby airports that may be better suited for you.
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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 March 13, 2026.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$306Average$495FlexibilityNo cancel feeOn-time71%

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