HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
San Antonio

$436+ 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 11/15. Fares are subject to change and may not be available on all flights or dates of travel.
CMI — SAT
Nov 9 — Nov 161
Sun 11/9
Sun 11/16
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Champaign to San Antonio 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

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

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 October 10, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$436
(American Airlines)

Popular in

December

Cheapest in

September
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. 18% potential increase in price ($110 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease ($25 potential savings vs. average RT price).
Search Deals

Find 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 October 10, 2025.

This American Airlines deal was found by Cheapflights users on 10/7. 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.
Sat 11/156:45 amCMI - SAT
1 stop7h 22mAmerican Airlines
Tue 11/184:30 pmSAT - CMI
1 stop4h 00mAmerican Airlines
Deal found 10/7$436
This American Airlines deal was found by Cheapflights users on 10/8. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/176:45 amCMI - SAT
1 stop5h 19mAmerican Airlines
Fri 11/216:08 amSAT - CMI
1 stop4h 37mAmerican Airlines
Deal found 10/8$476

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 October 10, 2025.
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

Sat 11/15

6:45 am-2:07 pm

1 stop7h 22m

San Antonio

Tue 11/18

4:30 pm-8:30 pm

1 stop4h 00m

$436

ChampaignSan Antonio

CMI - SAT

CMISAT

Champaign University-Willard

Mon 11/17

6:45 am-12:04 pm

1 stop5h 19m

San Antonio

Fri 11/21

6:08 am-10:45 am

1 stop4h 37m

$476

ChampaignSan Antonio

CMI - SAT

CMISAT

Champaign University-Willard

Tue 3/31

3:45 pm-10:53 pm

1 stop7h 08m

San Antonio

Sat 4/4

2:39 pm-8:32 pm

1 stop5h 53m

$489

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/7

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 October.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
eDreamsPrice 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 $179). 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.

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 October 10, 2025.
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
11,043 reviews

Comfort

7.2

Food

6.4

Entertainment

6.9

Crew

8.0

Overall

7.2

Boarding

7.5

Reviews

1 / 20
10.0
Excellent

Anonymous,Jan 2025

PIT - DFW

Due to gate changes,we nearly missed our flight. The gate agent reassigned our seats and would NOT give us our assigned seats,but she did honor that same request to the man who arrived after us. Her rudeness and difficulty was not appropriate.
American Airlines
7.2
Good
11,043 reviews
American Airlines
7.2
Good
11,043 reviews

Comfort

7.2

Food

6.4

Entertainment

6.9

Crew

8.0

Overall

7.2

Boarding

7.5

Reviews

1 / 20
10.0
Excellent

Anonymous,Jan 2025

PIT - DFW

Due to gate changes,we nearly missed our flight. The gate agent reassigned our seats and would NOT give us our assigned seats,but she did honor that same request to the man who arrived after us. Her rudeness and difficulty was not appropriate.

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 7h 22m. 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 $356, was found to be the cheapest airline from Champaign to San Antonio.. American Airlines is 28% 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 $179). 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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Champaign to San Antonio

See prices for flight routes from nearby airports that may be better suited for you.
O'Hare Intl to Dallas/Fort Worth flights
Midway to Dallas/Fort Worth flights
O'Hare Intl to Austin flights
O'Hare Intl to Hobby flights
Midway to Hobby flights
O'Hare Intl to George Bush Intcntl flights
O'Hare Intl to Love Field flights
O'Hare Intl to San Antonio flights
Midway to George Bush Intcntl flights
Midway to Love Field flights
Midway to Austin flights
St. Louis to Dallas/Fort Worth flights
St. Louis to Hobby flights
St. Louis to George Bush Intcntl flights
O'Hare Intl to El Paso flights
St. Louis to San Antonio flights
Midway to San Antonio flights
St. Louis to Love Field flights
Moline to Dallas/Fort Worth flights
O'Hare Intl to McAllen flights
St. Louis to Austin flights
Peoria to Dallas/Fort Worth flights
Bloomington to Dallas/Fort Worth flights
O'Hare Intl to Harlingen flights
Midway to El Paso flights
Peoria to Hobby flights
Evansville to Dallas/Fort Worth flights
Peoria to George Bush Intcntl flights
O'Hare Intl to Lubbock flights
Evansville to Hobby flights
Peoria to Austin flights
Moline to San Antonio flights
Peoria to San Antonio flights
O'Hare Intl to Brownsville flights
O'Hare Intl to Laredo flights
Moline to Austin flights
Decatur to Dallas/Fort Worth flights
Evansville to George Bush Intcntl flights
Moline to Hobby flights
Champaign to Dallas/Fort Worth flights
O'Hare Intl to Corpus Christi flights
St. Louis to Midland flights
Bloomington to Love Field flights
Moline to George Bush Intcntl flights
Springfield to Hobby flights
St. Louis to El Paso flights
O'Hare Intl to Midland flights
St. Louis to McAllen flights
Springfield to Dallas/Fort Worth flights
Moline to Love Field flights

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 October 10, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$356Average$492FlexibilityNo cancel feeOn-time71%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.