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Cheap flights from Ottawa to San Antonio from C$ 253

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 2/4. Fares are subject to change and may not be available on all flights or dates of travel.
YOW — SAT
18 Apr — 25 Apr1
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 19 March 2026.

Fri 24/72:00 p.m.
YOW
-
SAT
1 stop8h 13m
Air Canada
Tue 28/79:00 a.m.
SAT
-
YOW
1 stop7h 10m
Air Canada
Deal found 19/3C$ 417
Fri 10/410:44 a.m.
YOW
-
SAT
1 stop13h 14m
United Airlines
Sun 10/57:00 a.m.
SAT
-
YOW
1 stop15h 54m
United Airlines
Deal found 14/3C$ 421
Sat 11/410:44 a.m.
YOW
-
SAT
2 stops10h 04m
United Airlines
Wed 15/46:49 a.m.
SAT
-
YOW
2 stops14h 16m
United Airlines
Deal found 15/3C$ 423
Sat 11/46:25 a.m.
YOW
-
SAT
1 stop13h 34m
Air Canada
Wed 15/47:15 a.m.
SAT
-
YOW
1 stop10h 40m
Air Canada
Deal found 18/3C$ 476
Fri 24/75:10 a.m.
YOW
-
SAT
2 stops11h 53m
United Airlines
Tue 28/75:23 p.m.
SAT
-
YOW
2 stops15h 40m
United Airlines
Deal found 15/3C$ 508
Thu 18/66:25 a.m.
YOW
-
SAT
1 stop6h 47m
United Airlines
Thu 25/67:00 a.m.
SAT
-
YOW
1 stop15h 54m
United Airlines
Deal found 16/3C$ 555
Fri 10/46:00 a.m.
YOW
-
SAT
3 stops17h 58m
United Airlines
Sun 12/47:15 p.m.
SAT
-
YOW
2 stops17h 44m
United Airlines
Deal found 17/3C$ 556
Thu 23/75:10 a.m.
YOW
-
SAT
2 stops11h 53m
United Airlines
Mon 27/74:35 p.m.
SAT
-
YOW
2 stops15h 36m
United Airlines
Deal found 19/3C$ 564

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 19 March 2026.

Round-trip from

C$ 417

One-way from

C$ 253

Popular in

May

Cheapest in

April

Average price

C$ 1,101
Air Canada
  • Air Canada
  • 24/7-28/7
  • 2 total stops
  • 15h 23m total
  • Ottawa to San Antonio
Search Deals
United Airlines
  • United Airlines
  • 2/4
  • 1 total stop
  • 13h 14m total
  • Ottawa to San Antonio
Search Deals
Highest demand for flights based on searches. 7% potential increase in price (C$ 93 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 9% potential price decrease (C$ 107 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in March 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 19 March 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

Fri 10/4

10:44 a.m.-10:58 p.m.

1 stop13h 14m

San Antonio

Sun 10/5

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

1 stop15h 54m

C$ 421
Quickest round-trip

OttawaSan Antonio

YOW - SAT

YOWSAT

Ottawa

Wed 29/4

10:00 a.m.-5:43 p.m.

2 stops8h 43m

San Antonio

Wed 6/5

5:34 p.m.-10:03 a.m.

2 stops15h 29m

C$ 423

OttawaSan Antonio

YOW - SAT

YOWSAT

Ottawa

Sat 11/4

10:44 a.m.-7:48 p.m.

2 stops10h 04m

San Antonio

Wed 15/4

6:49 a.m.-10:05 p.m.

2 stops14h 16m

C$ 423

OttawaSan Antonio

YOW - SAT

YOWSAT

Ottawa

Sat 11/4

6:25 a.m.-6:59 p.m.

1 stop13h 34m

San Antonio

Wed 15/4

7:15 a.m.-6:55 p.m.

1 stop10h 40m

C$ 476

OttawaSan Antonio

YOW - SAT

YOWSAT

Ottawa

Thu 23/7

10:44 a.m.-4:03 p.m.

1 stop6h 19m

San Antonio

Mon 27/7

5:57 p.m.-1:59 p.m.

2 stops19h 02m

C$ 479

OttawaSan Antonio

YOW - SAT

YOWSAT

Ottawa

Fri 19/6

5:50 p.m.-8:27 a.m.

2 stops15h 37m

San Antonio

Thu 25/6

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

1 stop15h 54m

C$ 497
Cheapest one-way
Quickest one-way

OttawaSan Antonio

YOW - SAT

YOWSAT

Ottawa

Thu 2/4

10:44 a.m.-10:58 p.m.

1 stop13h 14m

C$ 253

OttawaSan Antonio

YOW - SAT

YOWSAT

Ottawa

Thu 2/4

10:00 a.m.-9:27 a.m.

3 stops24h 27m

C$ 695

Flights are sorted by cheapest round-trip flights first.

Deals found on 17/3

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.

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$ 231). Flying from Ottawa to San Antonio in June is currently the most expensive (average of C$ 490). 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 19 March 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
9,439 reviews
Check prices

Boarding

7.7

Entertainment

7.1

Crew

8.1

Comfort

7.3

Food

6.6

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
9,439 reviews
United Airlines
7.4
Good
9,439 reviews
Check prices

Boarding

7.7

Entertainment

7.1

Crew

8.1

Comfort

7.3

Food

6.6

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 13h 14m. The distance between Ottawa and San Antonio is about 2652 km.

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

    United Airlines, at C$ 410, was found to be the cheapest airline from Ottawa to San Antonio.. You may be able to fly from Ottawa to San Antonio for 53% 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.

  • 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$ 231). Flying from Ottawa to San Antonio in June is currently the most expensive (average of C$ 490). 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 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 19 March 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapestC$ 410AverageC$ 619FlexibilityNo 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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