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Cheap flights from Ottawa to San Antonio from C$ 312

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 18/12. Fares are subject to change and may not be available on all flights or dates of travel.
YOW — SAT
3 Dec — 10 Dec1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Ottawa to San Antonio

Discover tips and strategies to find the most affordable flight options for your journey from Ottawa (YOW) to San Antonio (SAT). 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 3 November 2025.

Round-trip from

C$ 421

One-way from

C$ 312

Popular in

May

Cheapest in

December

Average price

C$ 869
United Airlines
  • United Airlines
  • 23/2-25/2
  • 3 total stops
  • 31h 56m total
  • Ottawa to San Antonio
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American Airlines
  • American Airlines
  • 18/12
  • 2 total stops
  • 16h 59m total
  • Ottawa to San Antonio
Search Deals
Highest demand for flights based on searches. 18% potential increase in price (C$ 317 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 6% potential price decrease (C$ 93 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in November 2025
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Find flight deals from Ottawa to San Antonio

Enter your travel dates to find the best prices.

Cheapest flights from Ottawa to San Antonio
Explore the most affordable flight options available from Ottawa to San Antonio. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 3 November 2025.

Mon 1/127:00 a.m.YOW - SAT
1 stop12h 32mMultiple Airlines
Mon 8/121:55 p.m.SAT - YOW
1 stop9h 30mMultiple Airlines
Deal found 1/11C$ 452
Mon 1/127:30 p.m.YOW - SAT
2 stops14h 11mUnited Airlines
Mon 8/127:00 p.m.SAT - YOW
2 stops14h 26mUnited Airlines
Deal found 1/11C$ 590
Sun 21/125:40 a.m.YOW - SAT
2 stops37h 36mMultiple Airlines
Sun 28/1212:45 p.m.SAT - YOW
1 stop27h 28mMultiple Airlines
Deal found 2/11C$ 830
Thu 6/119:45 a.m.YOW - SAT
2 stops12h 35mUnited Airlines
Mon 10/112:14 p.m.SAT - YOW
2 stops8h 40mUnited Airlines
Deal found 2/11C$ 838
Sat 8/116:20 a.m.YOW - SAT
1 stop6h 48mUnited Airlines
Sat 8/112:14 p.m.SAT - YOW
2 stops8h 40mUnited Airlines
Deal found 2/11C$ 910
Tue 4/116:00 a.m.YOW - SAT
2 stops11h 20mUnited Airlines
Sat 8/112:04 p.m.SAT - YOW
1 stop6h 14mUnited Airlines
Deal found 2/11C$ 918

Cheapflights Fare Finder

 
Customize your flight search to find flights from Ottawa to San Antonio 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 629,999 searches. Data last updated 3 November 2025.
Use the filters below to find and compare flights from Ottawa to San Antonio that are best for you.

Fly from

Ottawa

Fly to

San Antonio

Route

Depart

Return

Price

OttawaSan Antonio

YOW - SAT

YOWSAT

Ottawa

Mon 23/2

5:48 p.m.-8:43 a.m.

2 stops15h 55m

San Antonio

Wed 25/2

7:00 a.m.-4:30 p.m.

1 stop8h 30m

C$ 421

OttawaSan Antonio

YOW - SAT

YOWSAT

Ottawa

Mon 1/12

4:15 p.m.-3:59 p.m.

2 stops24h 44m

San Antonio

Mon 8/12

1:55 p.m.-12:25 a.m.

1 stop9h 30m

C$ 515

OttawaSan Antonio

YOW - SAT

YOWSAT

Ottawa

Mon 1/12

7:30 p.m.-8:41 a.m.

2 stops14h 11m

San Antonio

Mon 8/12

7:00 p.m.-10:26 a.m.

2 stops14h 26m

C$ 590

OttawaSan Antonio

YOW - SAT

YOWSAT

Ottawa

Sun 21/12

5:40 a.m.-6:16 p.m.

2 stops37h 36m

San Antonio

Sun 28/12

12:45 p.m.-5:13 p.m.

1 stop27h 28m

C$ 830

OttawaSan Antonio

YOW - SAT

YOWSAT

Ottawa

Thu 18/12

9:30 a.m.-11:50 a.m.

1 stop27h 20m

C$ 424

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/11

Best time to book a flight from Ottawa to San Antonio

Have a flexible travel schedule? Discover the best time to fly to San Antonio from Ottawa 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 Ottawa to San Antonio

What is the cheapest month to book a flight from Ottawa to San Antonio?

Currently, October is the cheapest month in which you can book a flight from Ottawa to San Antonio (average of C$ 257). Flying from Ottawa to San Antonio in June is currently the most expensive (average of C$ 501). 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.

Reviews of airlines servicing San Antonio

Get insights into the airlines that provide service to San Antonio. 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 San Antonio. Reviews last updated 3 November 2025.
Get a feel of what it's like to fly with United Airlines and Air Canada from Ottawa to San Antonio 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
8,997 reviews
Check prices

Entertainment

7.1

Crew

8.1

Boarding

7.7

Food

6.6

Comfort

7.3

Overall

7.4

Reviews

1 / 20
8.0
Excellent

FERNANDO,Sep 2024

YYC - IAH

Everything was good, maybe can give better foof flys more than 4 hours
United Airlines
7.4
Good
8,997 reviews
United Airlines
7.4
Good
8,997 reviews
Check prices

Entertainment

7.1

Crew

8.1

Boarding

7.7

Food

6.6

Comfort

7.3

Overall

7.4

Reviews

1 / 20
8.0
Excellent

FERNANDO,Sep 2024

YYC - IAH

Everything was good, maybe can give better foof flys more than 4 hours
Air Canada
7.1
Good
10,398 reviews
United Airlines
7.4
Good
8,997 reviews
Check prices

Entertainment

7.1

Crew

8.1

Boarding

7.7

Food

6.6

Comfort

7.3

Overall

7.4

Reviews

1 / 20
8.0
Excellent

FERNANDO,Sep 2024

YYC - IAH

Everything was good, maybe can give better foof flys more than 4 hours

Related info for your journey

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

  • How long is the flight from Ottawa to San Antonio?

    For as low as C$ 421, United Airlines can have you in San Antonio from Ottawa in 15h 55m. The distance between Ottawa and San Antonio is about 2652 km.

  • What are the cheapest airlines flying from Ottawa to San Antonio round-trip?

    Air Canada, at C$ 693, was found to be the cheapest airline from Ottawa to San Antonio. An alternate airline flying to your destination would be United Airlines. You may be able to fly from Ottawa to San Antonio for 32% less than the average price by searching for these airlines.

  • Can I find deals for flights from Ottawa to San Antonio that include hotel bookings?

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

  • How can I find direct flights from Ottawa to San Antonio?

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

  • Can I find deals for business class flights from Ottawa to San Antonio?

    Yes. Cheapflights offers flight deals from Ottawa to San Antonio 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 Ottawa to San Antonio?

    Currently, October is the cheapest month in which you can book a flight from Ottawa to San Antonio (average of C$ 257). Flying from Ottawa to San Antonio in June is currently the most expensive (average of C$ 501). 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

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Top 2 airlines flying from Ottawa to San Antonio

Discover the top 2 airlines that operate flights from Ottawa to San Antonio. 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 629,999 searches. Data last updated 3 November 2025.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapestC$ 693AverageC$ 885FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
United AirlinesCheapestC$ 798AverageC$ 925FlexibilityNo cancel feeOn-time69%
Search United Airlines flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travelers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Ottawa to San Antonio?

When you search for this flight from Ottawa to San Antonio, Cheapflights searches on 900+ travel sites to save you time finding great flight deals online. Additionally, we offer filter features so you can choose a preferred cabin class or airline, see different price ranges, and much more so you can book the flight for you.

Why should you use Cheapflights to find cheap flight tickets from Ottawa to San Antonio?

Millions of users choose and trust Cheapflights to book the best flight deals from Ottawa to San Antonio for free. We help you search and compare prices from hundreds of airlines for the right flight just for you.

Can Cheapflights find flights from Ottawa to San Antonio with no change fees?

Users can book flights with no change fees policies with our dedicated filters. Book flights from Ottawa to San Antonio flexibly with Cheapflights today.

Can Cheapflights notify me if prices for flights from Ottawa to San Antonio become cheaper?

Yes, Cheapflights offers price alerts on Ottawa to San Antonio flights so you can book your travel at the perfect time. Price Alerts can be enabled by clicking the bell icon next to the flight deals above and providing your email address where you want to receive the alerts.

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