Cheap flights from Illinois to San Antonio from $55
This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Illinois to San Antonio departing on 4/15. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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How to get the cheapest flight ticket from Illinois to San Antonio
Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip
What is the cheapest month to fly to San Antonio?
If you aren’t able to travel during the month of September, then book flights to San Antonio from Illinois during August instead. Flights to San Antonio in August, while not as cheap as those in September, still average around $354.
What is the cheapest day to depart on your flight to San Antonio?
The cheapest day to depart on your flight to San Antonio is on a Tuesday when prices can be found for as low as $375. This is often the case because there is less demand to fly during this day of the week. Be sure to avoid booking your departure on a Sunday as prices are generally higher than usual. According to our data, the average ticket price to San Antonio on Sunday is $449.
What is the cheapest time of day to depart on your flight to San Antonio?
According to our data, the cheapest time of day to fly to San Antonio is in the afternoon. momondo users have found flights departing from Illinois to San Antonio in the afternoon for as low as $323. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. Flights to San Antonio are more costly in the morning, with an average ticket price of $406. Departure times in the morning fall within the peak daily travel times, which is why tickets can be more expensive.
What is the cheapest Illinois to San Antonio flight route?
Fly from Chicago Midway to San Antonio for the best Illinois - San Antonio flight prices
How far in advance should I book a flight to San Antonio?
You are more likely to see cheaper flights to San Antonio from Illinois when booking 18 weeks ahead of your departure date. In general, you can expect to find flights to San Antonio for around $406 when searching 18 weeks out.However, flight prices might be lower outside of this timeframe. For example, people recently found flights to San Antonio from Illinois for as low as $318 on momondo.
What cabin class options are available on Illinois to San Antonio flights?
There are 4 cabin classes available to choose from on Illinois to San Antonio flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.
What is the cheapest airline that flies from Illinois to San Antonio?
Frontier, Spirit Airlines, and Delta are the most popular carriers operating from Illinois to San Antonio
What airlines fly to San Antonio?
American Airlines, United Airlines and Southwest are the top three most popular airlines that fly to San Antonio from Illinois according to our data. American Airlines is the first choice among our users, with 64% of people opting to fly with this airline when traveling to San Antonio. Keep in mind that there are 6 different airlines that fly to San Antonio on a routine basis, so you have a few additional options to choose from.
How many flights depart from Illinois to San Antonio on average per day?
15 flights are operational daily from Illinois to San Antonio as of January 2025. The most popular departure time for this route is 8:00PM, with 72% of flights per day taking off in the evening.
How many flights depart from Illinois to San Antonio on average per week?
As of January 2025, there are 108 flights per week flying from Illinois to San Antonio. The most common day of the week flights depart is Mon, with 20% of flights taking off on this day.
Cheap Illinois to San Antonio flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from Illinois to San Antonio
When did momondo last update prices for flights from Illinois to San Antonio Airport?
Prices for flights from Illinois to San Antonio Airport were last updated today.
How many operators does momondo search for flights from Illinois to San Antonio Airport?
As of January 2025, there are 6 operators available to choose from for flights from Illinois to San Antonio Airport.
How old do you have to be to fly from Illinois to San Antonio Airport?
The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Illinois to San Antonio Airport.
What documentation or ID do you need to fly to San Antonio Airport?
The required travel and health documents for your San Antonio Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at San Antonio Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.
What is the most popular plane model from Illinois to San Antonio?
Based on momondo bookings for flights between Illinois and San Antonio, the leading plane model is Boeing 737-800, making up 26.42% of the total bookings. Other popular models include Airbus A319 with 15.48%, Boeing 737 MAX 8 with 13.30%, and Boeing 737-700 Passenger/BBJ1 (winglets) with 8.26%.
Best airlines flying from Illinois to San Antonio
Compare and see reviews for airlines that fly from Illinois to San Antonio with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom $94 | Free Cancellation | Rating 6.3 8,113 reviews | |||
| PriceFrom $126 | Free Cancellation | Rating 6.0 3,441 reviews | |||
| PriceFrom $131 | Free Cancellation | Rating 8.1 4,659 reviews | |||
| PriceFrom $195 | Free Cancellation | Rating 7.2 10,000 reviews | |||
| PriceFrom $258 | Free Cancellation | Rating 7.4 8,982 reviews | |||
| PriceFrom $272 | Free Cancellation | Rating 8.0 8,521 reviews |
Traveling to a place near San Antonio?
Book flights to San Antonio if you plan to visit one of these locationsWhy use momondo?
Why should I use momondo to find a flight deal from Illinois to San Antonio?
momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Illinois to San Antonio. Millions of users trust and use momondo every year so you are in good hands.
Can I find flights from Illinois to San Antonio with flexible booking policies on momondo?
momondo does allow users to show only those flights to San Antonio from Illinois which offer a flexible booking policy as well as other useful filters and features.
How can momondo help me find flights from Illinois to San Antonio?
Once all potential Illinois to San Antonio flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.
I’m not ready to book a flight from Illinois to San Antonio right now. Can momondo alert me if prices change?
Of course. momondo tracks the price of Illinois to San Antonio flights. All you need is a valid email address and we will do the rest; it is that quick and easy.