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O'Hare Intl

$64+ 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 2/27. Fares are subject to change and may not be available on all flights or dates of travel.
SAT — ORD
ene. 11 — ene. 181
dom. 1/11
dom. 1/18
1 adult, Economy
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1. Tell us where you want to go

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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

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 diciembre 12, 2025.

This Priceline deal was found by Cheapflights users on 12/10. 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.
mié. 12/242:09 pmSAT - ORD
1 stop10h 03mFrontier
mié. 12/3111:23 amORD - SAT
1 stop6h 53mFrontier
Deal found 12/10$208
This Expedia deal was found by Cheapflights users on 12/10. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 12/242:09 pmSAT - ORD
1 stop10h 03mFrontier
dom. 1/410:49 pmORD - SAT
1 stop14h 27mFrontier
Deal found 12/10$228
This Expedia deal was found by Cheapflights users on 12/10. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 12/306:45 amSAT - ORD
1 stop17h 27mFrontier
dom. 1/410:49 pmORD - SAT
1 stop14h 27mFrontier
Deal found 12/10$237
This Frontier deal was found by Cheapflights users on 12/11. 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. 12/242:09 pmSAT - ORD
1 stop10h 03mFrontier
jue. 1/17:00 amORD - SAT
1 stop6h 14mFrontier
Deal found 12/11$253
This Expedia deal was found by Cheapflights users on 12/10. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 12/296:45 amSAT - ORD
1 stop17h 27mFrontier
dom. 1/410:49 pmORD - SAT
1 stop14h 27mFrontier
Deal found 12/10$258
This United Airlines deal was found by Cheapflights users on 12/10. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 12/242:08 pmSAT - ORD
Nonstop2h 52mUnited Airlines
mié. 12/313:35 pmORD - SAT
Nonstop3h 09mUnited Airlines
Deal found 12/10$261
This CheapOair deal was found by Cheapflights users on 12/10. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 12/316:45 amSAT - ORD
1 stop17h 27mFrontier
vie. 1/26:00 amORD - SAT
1 stop11h 01mFrontier
Deal found 12/10$274
This CheapOair deal was found by Cheapflights users on 12/10. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 12/148:50 amSAT - ORD
1 stop28h 26mFrontier
vie. 12/196:00 amORD - SAT
1 stop11h 01mFrontier
Deal found 12/10$293
This Booking.com deal was found by Cheapflights users on 12/10. 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. 12/2510:18 amSAT - ORD
1 stop10h 05mFrontier
vie. 1/26:00 amORD - SAT
1 stop11h 01mFrontier
Deal found 12/10$301
This Expedia deal was found by Cheapflights users on 12/11. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 12/316:45 amSAT - ORD
1 stop17h 27mFrontier
dom. 1/47:00 amORD - SAT
1 stop17h 17mFrontier
Deal found 12/11$302

Find 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 diciembre 12, 2025.

Most accurate provider

CheapOair
3 stars

Most trusted provider

CheapOair
3 stars

Round-trip from

$185
(Cheapflightsfares)

One-way from

$64
(Frontier)

Popular in

November

Cheapest in

September

Average price

$414

Good round-trip deal

$379 or less

Good one-way deal

$225 or less
Provider with most accurate pricing for San Antonio-Chicago O'Hare Intl flight deals.
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Provider most trusted by Cheapflights users for San Antonio-Chicago O'Hare Intl flights.
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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. 5% potential increase in price ($23 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($7 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
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Price to beat on a round-trip flight from San Antonio to Chicago O'Hare Intl.
Search Deals
Price to beat on a one-way flight from San Antonio to Chicago O'Hare Intl.
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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 diciembre 12, 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

vie. 1/30

6:13 pm-5:52 pm

2 stops23h 39m

Chicago O'Hare Intl

dom. 2/1

8:43 pm-9:40 am

1 stop12h 57m

$203

San AntonioChicago

SAT - ORD

SATORD

San Antonio

mar. 1/6

12:45 pm-7:02 pm

1 stop6h 17m

Chicago O'Hare Intl

mar. 1/13

10:48 am-11:52 pm

1 stop13h 04m

$236

San AntonioChicago

SAT - ORD

SATORD

San Antonio

mié. 3/4

5:12 pm-2:05 pm

2 stops20h 53m

Chicago O'Hare Intl

mar. 3/10

7:59 pm-9:30 am

1 stop13h 31m

$242

San AntonioChicago

SAT - ORD

SATORD

San Antonio

mié. 12/24

6:40 am-9:31 am

Nonstop2h 51m

Chicago O'Hare Intl

mié. 12/31

3:35 pm-6:44 pm

Nonstop3h 09m

$261

San AntonioChicago

SAT - ORD

SATORD

San Antonio

mar. 1/6

2:05 pm-4:57 pm

Nonstop2h 52m

Chicago O'Hare Intl

mar. 1/13

8:00 pm-11:13 pm

Nonstop3h 13m

$277

San AntonioChicago

SAT - ORD

SATORD

San Antonio

mar. 3/3

7:10 am-9:51 am

Nonstop2h 41m

Chicago O'Hare Intl

lun. 3/9

8:44 pm-11:56 pm

Nonstop3h 12m

$313

San AntonioChicago

SAT - ORD

SATORD

San Antonio

mar. 2/24

7:00 am-9:53 am

Nonstop2h 53m

Chicago O'Hare Intl

vie. 2/27

9:05 am-12:22 pm

Nonstop3h 17m

$332

San AntonioChicago

SAT - ORD

SATORD

San Antonio

mié. 3/4

6:25 am-1:30 pm

1 stop7h 05m

Chicago O'Hare Intl

mar. 3/10

6:15 am-3:45 pm

2 stops9h 30m

$337

San AntonioChicago

SAT - ORD

SATORD

San Antonio

sáb. 1/17

2:05 pm-4:57 pm

Nonstop2h 52m

Chicago O'Hare Intl

dom. 1/18

3:53 pm-9:21 pm

1 stop5h 28m

$351

San AntonioChicago

SAT - ORD

SATORD

San Antonio

vie. 1/9

10:35 am-7:38 pm

1 stop9h 03m

$90

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/10

Showing 1-10 of 20 results
1
2

Compare providers for flights from San Antonio to O'Hare Intl

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 San Antonio to O'Hare Intl in December.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
CheapfaremartPrice Accuracy-Trust Score*1 star
JustAirTicketPrice Accuracy-Trust Score*1 star
CheapOairPrice Accuracy3 starsTrust Score*3 stars
PricelinePrice Accuracy1 starTrust Score*3 stars
Kiwi.comPrice 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 San Antonio-Chicago O'Hare Intl Airport flights, users find the pricing of CheapOair to be most consistent on Cheapflights vs. CheapOair Users can find the same prices on San Antonio-Chicago O'Hare Intl Airport flight deals on Cheapflights vs. CheapOair >95% of the time. Price accuracy is based on data collected from San Antonio-Chicago O'Hare Intl Airport flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on San Antonio-Chicago O'Hare Intl Airport flights, Cheapflights users trust CheapOair the most. CheapOair 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 San Antonio-Chicago O'Hare Intl Airport 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 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 December 5, 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, March is the cheapest month in which you can book a flight from San Antonio to Chicago O'Hare Intl Airport (average of $58). Flying from San Antonio to Chicago O'Hare Intl Airport in February is currently the most expensive (average of $160). 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 diciembre 12, 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 74% versus a flight at noon.

The best insider tips for San Antonio to Chicago O'Hare Intl Airport flights

AI-powered summary based on content written by travel experts. AI can make mistakes.
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

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 diciembre 12, 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
9,095 reviews

Food

6.6

Comfort

7.3

Crew

8.1

Entertainment

7.1

Overall

7.4

Boarding

7.7

Reviews

1 / 20
10.0
Excellent

Sunderesh,Dec 2025

AUS - EWR

Smooth flight from Austin to Newark. The crew was friendly.
United Airlines
7.4
Good
9,095 reviews
United Airlines
7.4
Good
9,095 reviews

Food

6.6

Comfort

7.3

Crew

8.1

Entertainment

7.1

Overall

7.4

Boarding

7.7

Reviews

1 / 20
10.0
Excellent

Sunderesh,Dec 2025

AUS - EWR

Smooth flight from Austin to Newark. The crew was friendly.
American Airlines
7.2
Good
11,048 reviews
United Airlines
7.4
Good
9,095 reviews

Food

6.6

Comfort

7.3

Crew

8.1

Entertainment

7.1

Overall

7.4

Boarding

7.7

Reviews

1 / 20
10.0
Excellent

Sunderesh,Dec 2025

AUS - EWR

Smooth flight from Austin to Newark. The crew was friendly.
Spirit Airlines
6.3
Okay
8,174 reviews
United Airlines
7.4
Good
9,095 reviews

Food

6.6

Comfort

7.3

Crew

8.1

Entertainment

7.1

Overall

7.4

Boarding

7.7

Reviews

1 / 20
10.0
Excellent

Sunderesh,Dec 2025

AUS - EWR

Smooth flight from Austin to Newark. The crew was friendly.
Frontier
5.8
Fair
3,084 reviews
United Airlines
7.4
Good
9,095 reviews

Food

6.6

Comfort

7.3

Crew

8.1

Entertainment

7.1

Overall

7.4

Boarding

7.7

Reviews

1 / 20
10.0
Excellent

Sunderesh,Dec 2025

AUS - EWR

Smooth flight from Austin to Newark. The crew was friendly.

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 18 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 2h 51m. 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 $96, 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 $191 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 cheapest airlines to fly from San Antonio to Chicago O'Hare Intl Airport one-way?

    The cheapest airlines for a one-way flight from San Antonio to Chicago O'Hare Intl Airport are Frontier ($73), Spirit Airlines ($81), and Southwest ($127).

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

    Consider Republic Airways (100%), Royal Jordanian (86%) or Qatar Airways (86%) 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 $993 for a flight from San Antonio to Chicago O'Hare Intl Airport. The cheapest flight overall is $129 while the most popular route, (San Antonio - Chicago O'Hare Intl) is currently priced at $153.

  • 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, March is the cheapest month in which you can book a flight from San Antonio to Chicago O'Hare Intl Airport (average of $58). Flying from San Antonio to Chicago O'Hare Intl Airport in February is currently the most expensive (average of $160). 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
Gurnee
Elgin
Naperville
Hoffman Estates
Beloit
Delavan
Oak Brook
Downers Grove
Des Plaines
Elk Grove Village
Skokie
Lake Geneva
Bridgeview
Warrenville
Waukegan
Aurora
Kenosha
Evanston

Browse thousands of different options on Cheapflights for your next trip

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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 diciembre 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$97Average$205FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$208Average$302FlexibilityNo cancel feeOn-time65%
American AirlinesCheapest$235Average$389FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$287Average$458FlexibilityNo cancel feeOn-time69%

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