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O'Hare Intl

$83+ Cheap flights from San Antonio (SAT) to O'Hare Intl (ORD)

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 10/3. Fares are subject to change and may not be available on all flights or dates of travel.
SAT — ORD
oct. 11 — oct. 181
sáb. 10/11
sáb. 10/18
1 adult, Economy
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Cheapflights Tip: The best prices from San Antonio to Chicago O'Hare Intl are usually found in September or August, booked 7 days in advance, depart on a Thursday or Friday and return on a Wednesday

Cheap flight deals from San Antonio to O'Hare Intl

Discover tips and strategies to find the most affordable flight options for your journey from San Antonio (SAT) to O'Hare Intl (ORD). 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 septiembre 11, 2025.

Round-trip from

$170
(Booking.com)

One-way from

$83
(United Airlines)

Popular in

December

Cheapest in

September

Average price

$329

Good round-trip deal

$358 or less

Good one-way deal

$200 or less
From San Antonio to Chicago O'Hare Intl
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One-way flight from San Antonio to Chicago O'Hare Intl
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Highest demand for flights based on searches. 8% potential increase in price ($35 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($6 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Price to beat on a round-trip flight from San Antonio to Chicago O'Hare Intl.
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Price to beat on a one-way flight from San Antonio to Chicago O'Hare Intl.
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Find flight deals from San Antonio to O'Hare Intl

Cheapest flights from San Antonio to O'Hare Intl
Explore the most affordable flight options available from San Antonio to O'Hare Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on septiembre 11, 2025.

This Booking.com deal was found by Cheapflights users on 9/10. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 9/189:33 pmSAT - ORD
1 stop23h 26mFrontier
vie. 10/310:42 amORD - SAT
1 stop27h 45mFrontier
Deal found 9/10$170
This Gotogate deal was found by Cheapflights users on 9/9. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 10/255:32 pmSAT - ORD
1 stop16h 04mFrontier
lun. 10/278:15 amORD - SAT
1 stop10h 00mFrontier
Deal found 9/9$172
This Kiwi.com deal was found by Cheapflights users on 9/8. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 11/105:35 pmSAT - ORD
1 stop6h 36mFrontier
dom. 11/166:00 amORD - SAT
1 stop13h 30mFrontier
Deal found 9/8$173
This Priceline deal was found by Cheapflights users on 9/11. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 10/213:59 pmSAT - ORD
1 stop7h 54mFrontier
lun. 10/278:15 amORD - SAT
1 stop10h 00mFrontier
Deal found 9/11$174
This Kiwi.com deal was found by Cheapflights users on 9/9. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 11/75:35 pmSAT - ORD
1 stop6h 36mMultiple Airlines
mar. 11/115:05 amORD - SAT
1 stop10h 06mMultiple Airlines
Deal found 9/9$175
This Booking.com deal was found by Cheapflights users on 9/10. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 10/213:59 pmSAT - ORD
1 stop7h 54mFrontier
vie. 10/249:54 pmORD - SAT
1 stop15h 25mFrontier
Deal found 9/10$176
This Booking.com deal was found by Cheapflights users on 9/10. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 9/265:40 pmSAT - ORD
1 stop6h 30mFrontier
jue. 10/96:50 amORD - SAT
1 stop12h 51mFrontier
Deal found 9/10$178
This Frontier deal was found by Cheapflights users on 9/11. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 10/83:59 pmSAT - ORD
1 stop7h 54mFrontier
sáb. 10/117:05 amORD - SAT
1 stop9h 32mFrontier
Deal found 9/11$179
This Kiwi.com deal was found by Cheapflights users on 9/9. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 11/83:12 pmSAT - ORD
1 stop9h 00mMultiple Airlines
mar. 11/115:05 amORD - SAT
1 stop10h 06mMultiple Airlines
Deal found 9/9$180
This United Airlines deal was found by Cheapflights users on 9/9. 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.
mié. 10/15:09 pmSAT - ORD
Nonstop2h 51mUnited Airlines
sáb. 10/49:00 amORD - SAT
1 stop6h 25mUnited Airlines
Deal found 9/9$181
This Booking.com deal was found by Cheapflights users on 9/11. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 11/153:12 pmSAT - ORD
1 stop9h 00mFrontier
mié. 11/197:20 amORD - SAT
1 stop27h 03mFrontier
Deal found 9/11$182
This Priceline deal was found by Cheapflights users on 9/10. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 11/105:35 pmSAT - ORD
1 stop6h 36mMultiple Airlines
mar. 11/115:05 amORD - SAT
1 stop10h 06mMultiple Airlines
Deal found 9/10$183

Cheapflights Fare Finder

 
Customize your flight search to find flights from San Antonio to O'Hare Intl 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 septiembre 11, 2025.
Use the filters below to find and compare flights from San Antonio to Chicago O'Hare Intl Airport that are best for you.

Fly from

San Antonio

Fly to

O'Hare Intl

Route

Depart

Return

Price

San AntonioChicago

SAT - ORD

SATORD

San Antonio

lun. 10/13

6:45 am-9:45 am

Nonstop3h 00m

Chicago O'Hare Intl

mié. 10/15

7:10 am-12:45 pm

1 stop5h 35m

$197

San AntonioChicago

SAT - ORD

SATORD

San Antonio

mié. 10/29

5:10 pm-9:30 pm

1 stop4h 20m

Chicago O'Hare Intl

mar. 11/4

2:15 pm-9:40 pm

2 stops7h 25m

$199

San AntonioChicago

SAT - ORD

SATORD

San Antonio

dom. 10/26

5:25 am-12:45 pm

1 stop7h 20m

Chicago O'Hare Intl

jue. 10/30

8:55 am-3:56 pm

1 stop7h 01m

$217

San AntonioChicago

SAT - ORD

SATORD

San Antonio

jue. 9/25

9:33 pm-11:51 am

1 stop14h 18m

Chicago O'Hare Intl

mié. 10/1

7:09 pm-4:47 pm

2 stops21h 38m

$221

San AntonioChicago

SAT - ORD

SATORD

San Antonio

mar. 10/21

6:45 am-9:45 am

Nonstop3h 00m

Chicago O'Hare Intl

lun. 10/27

8:08 pm-11:16 pm

Nonstop3h 08m

$231

San AntonioChicago

SAT - ORD

SATORD

San Antonio

mar. 10/21

1:05 pm-4:00 pm

Nonstop2h 55m

Chicago O'Hare Intl

vie. 10/24

2:53 pm-8:55 pm

1 stop6h 02m

$241

San AntonioChicago

SAT - ORD

SATORD

San Antonio

vie. 10/10

5:09 pm-8:00 pm

Nonstop2h 51m

Chicago O'Hare Intl

dom. 10/12

1:00 pm-3:58 pm

Nonstop2h 58m

$245

San AntonioChicago

SAT - ORD

SATORD

San Antonio

sáb. 10/11

2:04 pm-12:17 am

1 stop10h 13m

Chicago O'Hare Intl

mar. 10/14

7:15 am-11:40 pm

2 stops40h 25m

$253

San AntonioChicago

SAT - ORD

SATORD

San Antonio

mié. 10/8

3:59 pm-12:31 pm

2 stops20h 32m

Chicago O'Hare Intl

dom. 10/12

5:05 am-4:52 pm

1 stop11h 47m

$254

San AntonioChicago

SAT - ORD

SATORD

San Antonio

mar. 9/30

5:09 pm-8:00 pm

Nonstop2h 51m

Chicago O'Hare Intl

dom. 10/5

7:50 pm-10:55 pm

Nonstop3h 05m

$268

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/10

Showing 1-10 of 21 results
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The best insider tips for San Antonio to Chicago O'Hare Intl Airport flights

Snippets provided in this section are AI-generated based on a summarization of Cheapflights-commissioned articles. The articles are presented as-is, for general informational purposes only, and may not be up-to-date. The opinions contained in the articles are original to the author and reflect their authentic experience, which may vary significantly from the experience of others.
Cheapflights partnered with top experts to bring you the best recommendations for your San Antonio to Chicago O'Hare Intl Airport trip
Airports
SAT

For a quick check-in at SAT, use the central ticketing area before heading to Terminals A or B.

Read more about SATby Ramsey Qubein
ORD

Upon arrival at ORD, take the free shuttle train to navigate between terminals efficiently.

Read more about ORDby Ramsey Qubein
Our travel experts
Ramsey Qubein

Ramsey Qubein

Expert on ORD and SAT

Ramsey Qubein

Ramsey Qubein

An avid traveler and aviation expert who has visited 173 countries, all 50 states and seven continents, Ramsey Qubein flies nearly 400,000 miles a year. As a North Carolina-based freelance journalist for publications including Conde Nast Traveler, Forbes, USA Today and Bloomberg among others, he explores the latest trends in aviation, hospitality, cruises and business.

Read more

Best time to book a flight from San Antonio to O'Hare Intl

Have a flexible travel schedule? Discover the best time to fly to O'Hare Intl from San Antonio 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 San Antonio to Chicago O'Hare Intl Airport

How far ahead should I book a flight from San Antonio to Chicago O'Hare Intl Airport?

Use this chart to determine the optimal time to book a round-trip flight from San Antonio to O'Hare Intl. Price data was last updated on August 29, 2025.

The price you pay for your flight from San Antonio to Chicago O'Hare Intl Airport may vary depending on when you book. For the best chance of a lower fare, look to book 7 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

What is the cheapest month to book a flight from San Antonio to Chicago O'Hare Intl Airport?

Currently, August is the cheapest month in which you can book a flight from San Antonio to Chicago O'Hare Intl Airport (average of $245). Flying from San Antonio to Chicago O'Hare Intl Airport 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.

What is the cheapest time of day to fly from SAT to ORD?

Find hourly flight availability from San Antonio to O'Hare Intl. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated septiembre 11, 2025.

When flying from San Antonio to Chicago O'Hare Intl Airport, the time of day you fly usually plays a role in the price. Save by searching for a flight in the evening, which can drop the price by up to 75% versus a flight at noon.

How much does it cost to fly round-trip from San Antonio to Chicago O'Hare Intl Airport?

Reviews of airlines servicing O'Hare Intl

Get insights into the airlines that provide service to O'Hare Intl. 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 O'Hare Intl. Reviews last updated septiembre 11, 2025.
Get a feel of what it's like to fly with United Airlines, American Airlines, and Spirit Airlines from San Antonio to Chicago O'Hare Intl Airport by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
8,937 reviews

Entertainment

7.1

Food

6.6

Boarding

7.7

Comfort

7.3

Overall

7.4

Crew

8.1

Reviews

1 / 20
2.0
Mediocre

Deb,Jan 2025

MKE - ORD

It was terrible! So much to say, but in a nutshell we used vouchers from United because our last trip with them was awful with many mishaps and errors made. Unfortunately, this trip was even worse!
United Airlines
7.4
Good
8,937 reviews
United Airlines
7.4
Good
8,937 reviews

Entertainment

7.1

Food

6.6

Boarding

7.7

Comfort

7.3

Overall

7.4

Crew

8.1

Reviews

1 / 20
2.0
Mediocre

Deb,Jan 2025

MKE - ORD

It was terrible! So much to say, but in a nutshell we used vouchers from United because our last trip with them was awful with many mishaps and errors made. Unfortunately, this trip was even worse!
American Airlines
7.2
Good
10,000 reviews
United Airlines
7.4
Good
8,937 reviews

Entertainment

7.1

Food

6.6

Boarding

7.7

Comfort

7.3

Overall

7.4

Crew

8.1

Reviews

1 / 20
2.0
Mediocre

Deb,Jan 2025

MKE - ORD

It was terrible! So much to say, but in a nutshell we used vouchers from United because our last trip with them was awful with many mishaps and errors made. Unfortunately, this trip was even worse!
Spirit Airlines
6.3
Okay
8,023 reviews
United Airlines
7.4
Good
8,937 reviews

Entertainment

7.1

Food

6.6

Boarding

7.7

Comfort

7.3

Overall

7.4

Crew

8.1

Reviews

1 / 20
2.0
Mediocre

Deb,Jan 2025

MKE - ORD

It was terrible! So much to say, but in a nutshell we used vouchers from United because our last trip with them was awful with many mishaps and errors made. Unfortunately, this trip was even worse!
Frontier
5.8
Fair
3,177 reviews
United Airlines
7.4
Good
8,937 reviews

Entertainment

7.1

Food

6.6

Boarding

7.7

Comfort

7.3

Overall

7.4

Crew

8.1

Reviews

1 / 20
2.0
Mediocre

Deb,Jan 2025

MKE - ORD

It was terrible! So much to say, but in a nutshell we used vouchers from United because our last trip with them was awful with many mishaps and errors made. Unfortunately, this trip was even worse!

Related info for your journey

Find useful and relevant information for your journey from San Antonio to O'Hare Intl. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from San Antonio to Chicago O'Hare Intl?

    If you book a flight to Chicago O'Hare Intl from San Antonio, you will be flying from San Antonio, which is the city’s only airport. San Antonio (SAT) is located 7.6 mi from the center of San Antonio. There are 22 flights from San Antonio to Chicago O'Hare Intl per day from 4 different airlines.

  • How long is the flight from San Antonio to Chicago O'Hare Intl Airport?

    Departing from San Antonio to Chicago O'Hare Intl Airport will take you 3h. The distance from San Antonio to Chicago O'Hare Intl Airport is about 1042 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • What are the cheapest airlines flying from San Antonio to Chicago O'Hare Intl Airport round-trip?

    Currently priced at $97, Frontier will fly you from San Antonio to Chicago O'Hare Intl Airport and back. In addition to Frontier, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from Spirit Airlines and American Airlines - these airlines can fly you to your destination from $208 and $235, respectively. You may be able to fly from San Antonio to Chicago O'Hare Intl Airport for 75% less than the average price by searching for these airlines.

  • What are the most reliable airlines from San Antonio to Chicago O'Hare Intl Airport?

    Consider ANA (80%), Qatar Airways (77%) or Japan Airlines (75%) when booking your flight. These represent the most reliable airlines when flying from San Antonio to Chicago O'Hare Intl Airport.

  • What are the cheapest flights from San Antonio to Chicago O'Hare Intl Airport?

    On average you can expect to pay $894 for a flight from San Antonio to Chicago O'Hare Intl Airport. The cheapest flight overall is $148 while the most popular route, (San Antonio - Chicago O'Hare Intl) is currently priced at $133.

  • Can I find deals for flights from San Antonio to O'Hare Intl that include hotel bookings?

    Yes. In addition to deals on San Antonio to O'Hare Intl flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from San Antonio to O'Hare Intl?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from San Antonio to O'Hare Intl.

  • Can I find deals for business class flights from San Antonio to O'Hare Intl?

    Yes. Cheapflights offers flight deals from San Antonio to O'Hare Intl 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 San Antonio to Chicago O'Hare Intl Airport?

    Currently, August is the cheapest month in which you can book a flight from San Antonio to Chicago O'Hare Intl Airport (average of $245). Flying from San Antonio to Chicago O'Hare Intl Airport 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 Chicago O'Hare Intl Airport?

Book flights to Chicago O'Hare Intl Airport if you plan to visit one of these locations
Schaumburg
Rosemont
Skokie
Gurnee
Hoffman Estates
Des Plaines
Elgin
Arlington Heights
Beloit
Racine
Rockford
Orland Park
Oak Brook
Downers Grove
Naperville
Elk Grove Village
Evanston
Merrillville
Bridgeview
Warrenville

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Alternative routes for San Antonio to O'Hare Intl

See prices for flight routes from nearby airports that may be better suited for you.
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Top 4 airlines flying from San Antonio to O'Hare Intl

Discover the top 4 airlines that operate flights from San Antonio to O'Hare Intl. 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 septiembre 11, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$97Average$174FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$208Average$302FlexibilityNo cancel feeOn-time65%
American AirlinesCheapest$235Average$396FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$281Average$488FlexibilityNo cancel feeOn-time69%

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