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O'Hare Intl

$103+ 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 9/4. Fares are subject to change and may not be available on all flights or dates of travel.
SAT — ORD
ago. 2 — ago. 91
sáb. 8/2
sáb. 8/9
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 69 days in advance, depart on a Thursday or Friday and return on a Tuesday

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 julio 28, 2025.

Round-trip from

$206
(Cheapflightsfares)

One-way from

$103
(FlightHub)

Popular in

December

Cheapest in

September

Average price

$383

Good round-trip deal

$358 or less

Good one-way deal

$211 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 ($34 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 July 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 julio 28, 2025.

This Cheapflightsfares deal was found by Cheapflights users on 7/26. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 9/122:54 pmSAT - ORD
1 stop7h 04mSpirit Airlines
lun. 9/156:30 amORD - SAT
1 stop7h 19mSpirit Airlines
Deal found 7/26$206
This CheapOair deal was found by Cheapflights users on 7/25. 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.
sáb. 8/164:49 pmSAT - ORD
1 stop7h 10mMultiple Airlines
lun. 8/185:01 amORD - SAT
1 stop11h 51mMultiple Airlines
Deal found 7/25$211
This Cheapflightsfares deal was found by Cheapflights users on 7/28. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 9/133:22 pmSAT - ORD
1 stop6h 06mFrontier
sáb. 9/278:25 amORD - SAT
1 stop6h 02mFrontier
Deal found 7/28$216
This American Airlines deal was found by Cheapflights users on 7/25. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 8/169:15 amSAT - ORD
1 stop7h 55mAmerican Airlines
sáb. 8/239:55 amORD - SAT
Nonstop2h 47mAmerican Airlines
Deal found 7/25$233
This Delta deal was found by Cheapflights users on 7/27. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 9/95:10 amSAT - ORD
1 stop5h 10mDelta
sáb. 9/133:45 pmORD - SAT
1 stop5h 13mDelta
Deal found 7/27$255
This Southwest deal was found by Cheapflights users on 7/26. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 9/182:20 pmSAT - ORD
1 stop8h 00mSouthwest
mar. 9/231:50 pmORD - SAT
2 stops9h 15mSouthwest
Deal found 7/26$260
This United Airlines deal was found by Cheapflights users on 7/26. 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.
sáb. 8/306:30 amSAT - ORD
Nonstop2h 59mUnited Airlines
dom. 8/317:55 pmORD - SAT
Nonstop3h 04mUnited Airlines
Deal found 7/26$272

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 julio 28, 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. 9/12

2:54 pm-9:58 pm

1 stop7h 04m

Chicago O'Hare Intl

lun. 9/15

6:30 am-1:49 pm

1 stop7h 19m

$206

San AntonioChicago

SAT - ORD

SATORD

San Antonio

sáb. 8/16

4:49 pm-11:59 pm

1 stop7h 10m

Chicago O'Hare Intl

lun. 8/18

5:01 am-4:52 pm

1 stop11h 51m

$211

San AntonioChicago

SAT - ORD

SATORD

San Antonio

sáb. 9/13

3:22 pm-9:28 pm

1 stop6h 06m

Chicago O'Hare Intl

sáb. 9/27

8:25 am-2:27 pm

1 stop6h 02m

$216

San AntonioChicago

SAT - ORD

SATORD

San Antonio

sáb. 8/16

9:15 am-5:10 pm

1 stop7h 55m

Chicago O'Hare Intl

sáb. 8/23

9:55 am-12:42 pm

Nonstop2h 47m

$233

San AntonioChicago

SAT - ORD

SATORD

San Antonio

mar. 9/9

5:10 am-10:20 am

1 stop5h 10m

Chicago O'Hare Intl

mié. 9/17

5:30 am-12:32 pm

1 stop7h 02m

$255

San AntonioChicago

SAT - ORD

SATORD

San Antonio

jue. 9/18

2:20 pm-10:20 pm

1 stop8h 00m

Chicago O'Hare Intl

mar. 9/23

1:50 pm-11:05 pm

2 stops9h 15m

$260

San AntonioChicago

SAT - ORD

SATORD

San Antonio

sáb. 8/30

6:30 am-9:29 am

Nonstop2h 59m

Chicago O'Hare Intl

dom. 8/31

7:55 pm-10:59 pm

Nonstop3h 04m

$272

San AntonioChicago

SAT - ORD

SATORD

San Antonio

jue. 9/4

2:54 pm-9:58 pm

1 stop7h 04m

$103

San AntonioChicago

SAT - ORD

SATORD

San Antonio

vie. 8/8

5:38 pm-12:22 am

1 stop6h 44m

$112

San AntonioChicago

SAT - ORD

SATORD

San Antonio

mié. 8/27

12:57 pm-3:53 pm

Nonstop2h 56m

$118

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/27

Showing 1-10 of 12 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 July 25, 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 69 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 julio 28, 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.

Weekly flight availability from San Antonio to Chicago O'Hare Intl Airport

Explore weekly flight availability from San Antonio to O'Hare Intl. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated julio 28, 2025.

The most flights from SAT to ORD are scheduled on a Monday (31 on average). You will have fewer flight options on Wednesday, which is when the least amount of flights are scheduled (24 on average).

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 julio 28, 2025.
Get a feel of what it's like to fly with Southwest, Delta, and United 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.
Southwest
8.0
Very good
4,237 reviews

Comfort

8.0

Boarding

8.1

Entertainment

7.5

Food

7.0

Crew

8.6

Overall

8.0

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.
Southwest
8.0
Very good
4,237 reviews
Southwest
8.0
Very good
4,237 reviews

Comfort

8.0

Boarding

8.1

Entertainment

7.5

Food

7.0

Crew

8.6

Overall

8.0

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.
Delta
8.0
Very good
7,971 reviews
Southwest
8.0
Very good
4,237 reviews

Comfort

8.0

Boarding

8.1

Entertainment

7.5

Food

7.0

Crew

8.6

Overall

8.0

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.
United Airlines
7.4
Good
8,893 reviews
Southwest
8.0
Very good
4,237 reviews

Comfort

8.0

Boarding

8.1

Entertainment

7.5

Food

7.0

Crew

8.6

Overall

8.0

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.
American Airlines
7.2
Good
10,000 reviews
Southwest
8.0
Very good
4,237 reviews

Comfort

8.0

Boarding

8.1

Entertainment

7.5

Food

7.0

Crew

8.6

Overall

8.0

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.
Spirit Airlines
6.3
Okay
8,034 reviews
Southwest
8.0
Very good
4,237 reviews

Comfort

8.0

Boarding

8.1

Entertainment

7.5

Food

7.0

Crew

8.6

Overall

8.0

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.

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 27 flights from San Antonio to Chicago O'Hare Intl per day from 5 different airlines.

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

    Currently priced at $206, Spirit Airlines will fly you from San Antonio to Chicago O'Hare Intl Airport and back. In addition to Spirit Airlines, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from Frontier and American Airlines - these airlines can fly you to your destination from $216 and $233, respectively. You may be able to fly from San Antonio to Chicago O'Hare Intl Airport for 48% 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 Spirit Airlines ($103), Frontier ($112), and United Airlines ($118).

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

    Consider ANA (88%), Aer Lingus (83%) or Emirates (82%) 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 $2,647 for a flight from San Antonio to Chicago O'Hare Intl Airport. The cheapest flight overall is $117 while the most popular route, (San Antonio - Chicago O'Hare Intl) is currently priced at $206.

  • 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
Beloit
Hoffman Estates
Skokie
Naperville
Arlington Heights
Des Plaines
Elgin
Orland Park
Elk Grove Village
Racine
Rockford
Tinley Park
Merrillville
Evanston
Lake Geneva
Gurnee
Joliet
Waukegan

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 5 airlines flying from San Antonio to O'Hare Intl

Discover the top 5 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 julio 28, 2025.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$111Average$261FlexibilityNo cancel feeOn-time65%
FrontierCheapest$112Average$153FlexibilityNo cancel feeOn-time62%
American AirlinesCheapest$206Average$384FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$275Average$446FlexibilityNo cancel feeOn-time63%
United AirlinesCheapest$286Average$484FlexibilityNo cancel feeOn-time69%

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