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Cheap flights from Ottawa to San Antonio from C$ 371

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 3/10. Fares are subject to change and may not be available on all flights or dates of travel.
YOW — SAT
28 Aug — 4 Sep1
1 adult
1 adult, Economy, 0 bags

Cheap 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 29 July 2026.

Sat 3/103:10 p.m.
YOW
-
SAT
2 stops8h 41m
United Airlines
Wed 14/107:00 a.m.
SAT
-
YOW
1 stop6h 17m
United Airlines
Deal found 28/7C$ 655
Sat 26/93:10 p.m.
YOW
-
SAT
2 stops8h 41m
United Airlines
Sat 10/105:33 p.m.
SAT
-
YOW
2 stops15h 23m
United Airlines
Deal found 28/7C$ 660
Sat 3/105:20 p.m.
YOW
-
SAT
2 stops16h 32m
United Airlines
Thu 15/1011:47 a.m.
SAT
-
YOW
2 stops11h 07m
United Airlines
Deal found 28/7C$ 701
Wed 2/95:20 p.m.
YOW
-
SAT
1 stop6h 30m
Air Canada
Sun 6/912:55 p.m.
SAT
-
YOW
1 stop7h 40m
Air Canada
Deal found 26/7C$ 721
Sat 10/106:25 a.m.
YOW
-
SAT
1 stop11h 06m
United Airlines
Sat 17/102:00 p.m.
SAT
-
YOW
1 stop6h 35m
United Airlines
Deal found 28/7C$ 734
Sat 3/106:00 a.m.
YOW
-
SAT
2 stops11h 31m
United Airlines
Fri 9/107:25 p.m.
SAT
-
YOW
2 stops18h 45m
United Airlines
Deal found 28/7C$ 755
Fri 9/106:01 p.m.
YOW
-
SAT
2 stops19h 57m
United Airlines
Sat 17/105:30 a.m.
SAT
-
YOW
2 stops10h 08m
United Airlines
Deal found 27/7C$ 765
Thu 13/810:37 a.m.
YOW
-
SAT
2 stops11h 39m
United Airlines
Mon 17/86:30 a.m.
SAT
-
YOW
1 stop14h 05m
United Airlines
Deal found 28/7C$ 773
Fri 9/106:01 p.m.
YOW
-
SAT
2 stops19h 57m
United Airlines
Fri 16/105:30 p.m.
SAT
-
YOW
2 stops22h 08m
United Airlines
Deal found 27/7C$ 797

Find 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 29 July 2026.

Round-trip from

C$ 655

One-way from

C$ 371

Popular in

March

Cheapest in

December

Average price

C$ 547
United Airlines
  • United Airlines
  • 3/10-14/10
  • 3 total stops
  • 14h 58m total
  • Ottawa to San Antonio
Search Deals
United Airlines
  • United Airlines
  • 3/10
  • 2 total stops
  • 11h 31m total
  • Ottawa to San Antonio
Search Deals
Highest demand for flights based on searches. 6% potential increase in price (C$ 74 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 6% potential price decrease (C$ 66 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in July 2026
Search Deals

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 29 July 2026.
Use the filters below to find and compare flights from Ottawa to San Antonio that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

OttawaSan Antonio

YOW - SAT

YOWSAT

Ottawa

Sat 3/10

6:05 a.m.-4:31 p.m.

2 stops11h 26m

San Antonio

Thu 15/10

12:50 p.m.-10:35 p.m.

1 stop8h 45m

C$ 701
Quickest round-trip

OttawaSan Antonio

YOW - SAT

YOWSAT

Ottawa

Wed 2/9

5:20 p.m.-10:50 p.m.

1 stop6h 30m

San Antonio

Sun 6/9

12:55 p.m.-9:35 p.m.

1 stop7h 40m

C$ 721

OttawaSan Antonio

YOW - SAT

YOWSAT

Ottawa

Wed 2/9

10:37 a.m.-7:58 p.m.

2 stops10h 21m

San Antonio

Sun 6/9

7:35 a.m.-5:16 p.m.

2 stops8h 41m

C$ 734

OttawaSan Antonio

YOW - SAT

YOWSAT

Ottawa

Thu 10/9

5:20 p.m.-10:51 p.m.

1 stop6h 31m

San Antonio

Thu 17/9

7:00 a.m.-11:54 p.m.

1 stop15h 54m

C$ 734

OttawaSan Antonio

YOW - SAT

YOWSAT

Ottawa

Sat 10/10

6:25 a.m.-4:31 p.m.

1 stop11h 06m

San Antonio

Sat 17/10

2:00 p.m.-9:35 p.m.

1 stop6h 35m

C$ 734

OttawaSan Antonio

YOW - SAT

YOWSAT

Ottawa

Thu 13/8

10:37 a.m.-9:16 p.m.

2 stops11h 39m

San Antonio

Mon 17/8

6:30 a.m.-9:35 p.m.

1 stop14h 05m

C$ 773
Cheapest one-way
Quickest one-way

OttawaSan Antonio

YOW - SAT

YOWSAT

Ottawa

Sat 3/10

6:25 a.m.-12:06 p.m.

1 stop6h 41m

C$ 371

OttawaSan Antonio

YOW - SAT

YOWSAT

Ottawa

Sun 6/9

10:37 a.m.-4:31 p.m.

1 stop6h 54m

C$ 402

OttawaSan Antonio

YOW - SAT

YOWSAT

Ottawa

Sun 6/9

12:25 p.m.-9:29 p.m.

2 stops10h 04m

C$ 409

OttawaSan Antonio

YOW - SAT

YOWSAT

Ottawa

Sun 6/9

6:00 a.m.-10:50 p.m.

3 stops17h 50m

C$ 440

Flights are sorted by cheapest round-trip flights first.

Deals found on 28/7

Sorted by cheapest first

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.

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 29 July 2026.
Get a feel of what it's like to fly with United Airlines 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
10,052 reviews
Check prices

Crew

8.1

Comfort

7.3

Entertainment

7.1

Food

6.6

Overall

7.4

Boarding

7.7

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
10,052 reviews
United Airlines
7.4
Good
10,052 reviews
Check prices

Crew

8.1

Comfort

7.3

Entertainment

7.1

Food

6.6

Overall

7.4

Boarding

7.7

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$ 721, United Airlines can have you in San Antonio from Ottawa in 6h 30m. The distance between Ottawa and San Antonio is about 2652 km. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.

  • What is the cheapest airline to fly from Ottawa to San Antonio round-trip?

    United Airlines, at C$ 421, was found to be the cheapest airline from Ottawa to San Antonio.. You may be able to fly from Ottawa to San Antonio for 45% less than the average price by searching for this airline.

  • 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.

See more FAQs

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Alternative routes for Ottawa to San Antonio

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Top airline flying from Ottawa to San Antonio

Discover the top airline 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 29 July 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapestC$ 421AverageC$ 545FlexibilityNo 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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