ORD → SAT

Find and Compare the Cheapest Ways to Fly from Chicago to San Antonio

Compare one-way, round-trip and flight + hotel packages from Chicago to San Antonio, a nonstop flight of about 2h 35m, with fares from around 170. Nonstop fares seen from American.

Chicago to San Antonio flight facts

Chicago to San Antonio is a domestic route covering about 1,042 miles, arriving at San Antonio International Airport (SAT) in United States. Peak travel season in San Antonio runs March–May & October–November (warm and sunny), while June–August is usually the quietest and best-value time to visit. Nonstop fares we've tracked on this route come from American.

Key facts for flights from Chicago to San Antonio
Departing fromO'Hare International Airport (ORD)
Arriving atSan Antonio International Airport (SAT)
Distance1,042 miles (1,678 km)
Nonstop flight timeAbout 2h 35m
Nonstop airlines seenAmerican
Round-trip fares from$170 (estimate)
Cheapest monthsJanuary, October, September
Peak season in San AntonioMarch–May & October–November
Cheapest hotel months in San AntonioJune–August
Best time to book1 to 3 months ahead
Route info updatedOctober 16, 2026

When to visit San Antonio

  • Peak season

    March–May & October–November

    Warm and sunny

  • Shoulder season

    February & September

    Mild, heat easing

  • Off-peak season

    June–August

    Hot and humid

Estimated round-trip fares by month, Chicago to San Antonio

Estimated lowest round-trip fare per month
MonthFares from
January$170
February$190
March$200
April$220
May$210
June$255
July$275
August$235
September$180
October$170
November$225
December$260

Flying from Chicago to San Antonio

Airlines Flying this Route

Nonstop fares we've tracked on this route come from American. Ducoffs.com compares full-service and low-cost airlines flying between Chicago and San Antonio in a single search, including nonstop and one-stop options, so you can weigh price against total travel time.

Best Time to Book Flights from Chicago to San Antonio

Fares on this route tend to be lowest in January, October, and September. For the best selection, book about 1 to 3 months before departure and stay flexible by a day or two.

Average Travel Duration

Chicago and San Antonio are about 1,042 miles apart. A nonstop flight takes roughly 2h 35m; connecting itineraries usually add 2 to 5 hours.

Chicago to San Antonio flight questions

How can I find the absolute cheapest flight from Chicago to San Antonio?

The best way to secure budget rates is by comparing multiple airlines simultaneously and checking flexible dates. Ducoffs.com scans available partner networks to bring you real-time pricing options.

What is the cheapest month to fly from Chicago to San Antonio?

Based on typical seasonal demand, January, October, and September tend to offer the lowest fares on this route, with estimated round-trip prices starting around $170. Live prices change daily, so run a search for your exact dates.

How long is the flight from Chicago to San Antonio?

Chicago and San Antonio are about 1,042 miles apart. A nonstop flight takes roughly 2h 35m, while connecting itineraries usually add 2 to 5 hours depending on the layover.

Which airlines fly nonstop from Chicago to San Antonio?

Recent nonstop fares we've tracked on this route come from American. Schedules change by season, so your live search shows every airline flying your dates.

When are hotels cheapest in San Antonio?

Hotel rates in San Antonio are usually lowest in June–August, when demand is quieter, and highest during peak season (March–May & October–November). Booking your flight and hotel together can save up to 30%.

Which airport do I fly into for San Antonio?

This route arrives at San Antonio International Airport (SAT). Your search results also show nearby airports when they offer a cheaper or faster option.

How far in advance should I book a flight to San Antonio?

For this route, booking about 1 to 3 months before departure usually gives the best balance of price and seat selection. Mid-week departures are often cheaper than weekend flights.

Is it cheaper to bundle flights and hotels together?

Yes. Bundling your travel components can save you up to 30% compared to booking flights and hotels separately, as airlines and properties offer exclusive package discounts.