Cheap flights from Chicago O'Hare Intl Airport to San Antonio from $67
This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Chicago O'Hare Intl Airport to San Antonio departing on 9/4. 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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Spirit Airlines flights from Chicago O'Hare Intl Airport to San Antonio
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Southwest flights from Chicago O'Hare Intl Airport to San Antonio
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How to get the cheapest flight ticket from Chicago O'Hare Intl Airport 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 Chicago O'Hare Intl Airport during August instead. Flights to San Antonio in August, while not as cheap as those in September, still average around $358.
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 Wednesday when prices can be found for as low as $392. 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 Monday as prices are generally higher than usual. According to our data, the average ticket price to San Antonio on Monday is $458.
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 at noon. momondo users have found flights departing from Chicago O'Hare Intl Airport to San Antonio at noon for as low as $387. 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 $428. Departure times in the morning fall within the peak daily travel times, which is why tickets can be more expensive.
What is the cheapest Chicago O'Hare Intl to San Antonio flight route?
Fly from Chicago O'Hare Intl to San Antonio for the best Chicago O'Hare Intl - 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 Chicago O'Hare Intl Airport when booking weeks ahead of your departure date. In general, you can expect to find flights to San Antonio for around $413 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to San Antonio from Chicago O'Hare Intl Airport for as low as $347 on momondo.
What cabin class options are available on Chicago O'Hare Intl to San Antonio flights?
There are 4 cabin classes available to choose from on Chicago O'Hare Intl to San Antonio flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.
Can stopping save me money on Chicago O'Hare Intl Airport to San Antonio flights?
No. A direct flight is the cheapest option for a flight between Chicago O'Hare Intl Airport to San Antonio.
How have Chicago O'Hare Intl Airport to San Antonio flight prices changed over time?
As of July 2025, prices for Chicago O'Hare Intl Airport to San Antonio flights are approximately 9% more expensive when compared to flights at the same time last year.
What is the cheapest airline that flies from Chicago O'Hare Intl to San Antonio?
United Airlines, Southwest, and Frontier are the most popular carriers operating from Chicago O'Hare Intl to San Antonio
What airlines fly to San Antonio?
American Airlines, United Airlines and Frontier are the top three most popular airlines that fly to San Antonio from Chicago O'Hare Intl Airport according to our data. American Airlines is the first choice among our users, with 51% of people opting to fly with this airline when traveling to San Antonio. Keep in mind that there are 5 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 Chicago O'Hare Intl Airport to San Antonio on average per day?
As of July 2025, 24 flights take off from Chicago O'Hare Intl Airport and land in San Antonio each day. The most common flight departure time for this route is 8:00PM, with 48% of daily flights taking off in the evening.
How many flights depart from Chicago O'Hare Intl Airport to San Antonio on average per week?
173 flights are operational weekly from Chicago O'Hare Intl Airport to San Antonio as of July 2025. The most popular departure day for this route is Mon, with 17% of flights per week taking off on this day.
When to book flights from Chicago O'Hare Intl Airport to San Antonio
Cheap Chicago O'Hare Intl Airport to San Antonio (ORD to SAT) flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from Chicago O'Hare Intl Airport to San Antonio
How far is Chicago O'Hare Intl to San Antonio by plane?
The distance between Chicago O'Hare Intl and San Antonio is about 1048.8 mi. Typically, this will take 2h 44m by plane in normal conditions.
When did momondo last update prices for flights from Chicago O'Hare Intl Airport to San Antonio Airport?
Prices for flights from Chicago O'Hare Intl Airport to San Antonio Airport refresh daily.
How many operators does momondo search for flights from Chicago O'Hare Intl Airport to San Antonio Airport?
The number of operators available for flights from Chicago O'Hare Intl Airport to San Antonio Airport is 5 as of July 2025.
How old do you have to be to fly from Chicago O'Hare Intl Airport 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 Chicago O'Hare Intl Airport 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 Chicago O'Hare Intl Airport to San Antonio?
Based on momondo bookings for flights between Chicago O'Hare Intl Airport and San Antonio, the leading plane model is Airbus A319, making up 21.36% of the total bookings. Other popular models include Boeing 737-800 with 21.30%, Airbus A320-100/200 with 15.32%, and Embraer 175 (Enhanced Winglets) with 11.07%.
What is the most popular airline from Chicago O'Hare Intl Airport to San Antonio?
momondo data reveals that the most frequently booked airline on the route from Chicago O'Hare Intl Airport to San Antonio is American Airlines, representing 59% of all bookings. The subsequent popular airlines are United Airlines at 30%, Spirit Airlines at 5%, and Frontier at 4%.
Best airlines flying from Chicago O'Hare Intl Airport to San Antonio
Compare and see reviews for airlines that fly from Chicago O'Hare Intl Airport to San Antonio with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom $125 | Free Cancellation | Rating 5.9 3,268 reviews | |||
| PriceFrom $132 | Free Cancellation | Rating 6.3 8,060 reviews | |||
| PriceFrom $201 | Free Cancellation | Rating 7.2 10,000 reviews | |||
| PriceFrom $296 | Free Cancellation | Rating 8.0 4,253 reviews | |||
| PriceFrom $297 | Free Cancellation | Rating 7.4 8,843 reviews |
Southwest Flights From Chicago O'Hare Intl Airport to San Antonio
Southwest flight deals from Chicago O'Hare Intl Airport to San Antonio start from $296 round-trip. Over the 2 Southwest flights for this route in a normal week, average airfare is usually $584 round-trip - but some users have found much cheaper deals with momondo.
United Airlines Flights From Chicago O'Hare Intl Airport to San Antonio
United Airlines (7.4/10 from 8,842 reviews) operates around 28 flights from Chicago O'Hare Intl Airport to San Antonio in any given week. The average United Airlines airfare for this route is around $476, with deals from around $297 rare but found on momondo. Referenced prices are for round-trip Chicago O'Hare Intl Airport to San Antonio flight searches in the last 72 hours.
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Why should I use momondo to find a flight deal from Chicago to San Antonio?
momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Chicago to San Antonio. momondo saves you time and could save you money on your trip.
Can I find flights from Chicago to San Antonio with flexible booking policies on momondo?
Flights from Chicago to San Antonio with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.
How can momondo help me find flights from Chicago to San Antonio?
Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to San Antonio from Chicago.
I’m not ready to book a flight from Chicago to San Antonio right now. Can momondo alert me if prices change?
Of course. momondo tracks the price of Chicago to San Antonio flights. All you need is a valid email address and we will do the rest; it is that quick and easy.