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Cheap flights from Montreal to San Antonio from C$ 235

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 23/9. Fares are subject to change and may not be available on all flights or dates of travel.
YMQ — SAT
4 May — 11 May1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Montreal to San Antonio

Enter your travel dates to find the best prices.

Cheapest flights from Montreal to San Antonio
Explore the most affordable flight options available from Montreal to San Antonio. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 4 April 2026.

Wed 16/92:20 p.m.
YUL
-
SAT
2 stops9h 18m
United Airlines
Sat 26/96:27 a.m.
SAT
-
YUL
1 stop8h 43m
United Airlines
Deal found 2/4C$ 463
Wed 3/67:00 a.m.
YUL
-
SAT
1 stop7h 31m
Delta
Sat 6/64:00 p.m.
SAT
-
YUL
1 stop6h 13m
Delta
Deal found 30/3C$ 478
Tue 28/45:00 p.m.
YUL
-
SAT
1 stop6h 58m
United Airlines
Tue 5/52:00 p.m.
SAT
-
YUL
1 stop6h 26m
United Airlines
Deal found 31/3C$ 479
Sat 31/102:30 p.m.
YUL
-
SAT
2 stops9h 25m
American Airlines
Mon 9/116:04 a.m.
SAT
-
YUL
1 stop8h 07m
American Airlines
Deal found 3/4C$ 529
Tue 27/101:15 p.m.
YUL
-
SAT
2 stops10h 53m
Air Canada
Wed 11/115:45 a.m.
SAT
-
YUL
1 stop10h 07m
Air Canada
Deal found 3/4C$ 535
Fri 1/58:30 a.m.
YUL
-
SAT
2 stops8h 09m
United Airlines
Fri 8/57:10 p.m.
SAT
-
YUL
2 stops15h 50m
United Airlines
Deal found 2/4C$ 553
Wed 3/62:10 p.m.
YUL
-
SAT
1 stop8h 08m
Air Canada
Sat 6/68:30 a.m.
SAT
-
YUL
2 stops12h 49m
Air Canada
Deal found 31/3C$ 554
Sat 16/54:30 p.m.
YUL
-
SAT
1 stop17h 12m
Air Canada
Tue 19/58:30 a.m.
SAT
-
YUL
1 stop7h 56m
Air Canada
Deal found 2/4C$ 568
Wed 16/96:00 p.m.
YUL
-
SAT
1 stop6h 21m
American Airlines
Wed 23/98:00 a.m.
SAT
-
YUL
2 stops13h 44m
American Airlines
Deal found 2/4C$ 571

Find flight deals from Montreal to San Antonio

Discover tips and strategies to find the most affordable flight options for your journey from Montreal (YMQ) 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 4 April 2026.

Round-trip from

C$ 463

One-way from

C$ 235
United Airlines
  • United Airlines
  • 16/9-28/9
  • 3 total stops
  • 27h 33m total
  • Montreal to San Antonio
Search Deals
Air Canada
  • Air Canada
  • 23/9
  • 1 total stop
  • 8h 03m total
  • Montreal to San Antonio
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Montreal 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 4 April 2026.
Use the filters below to find and compare flights from Montreal to San Antonio that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

MontrealSan Antonio

YUL - SAT

YULSAT

Montreal Pierre Elliott Trudeau Intl

Mon 21/9

6:15 p.m.-12:15 a.m.

1 stop7h 00m

San Antonio

Sun 27/9

12:50 p.m.-11:10 p.m.

1 stop9h 20m

C$ 463

MontrealSan Antonio

YUL - SAT

YULSAT

Montreal Pierre Elliott Trudeau Intl

Thu 17/9

7:00 a.m.-5:16 p.m.

1 stop11h 16m

San Antonio

Fri 25/9

12:15 p.m.-11:56 p.m.

1 stop10h 41m

C$ 463

MontrealSan Antonio

YUL - SAT

YULSAT

Montreal Pierre Elliott Trudeau Intl

Wed 16/9

6:15 p.m.-12:15 a.m.

1 stop7h 00m

San Antonio

Sat 26/9

12:50 p.m.-11:10 p.m.

1 stop9h 20m

C$ 463

MontrealSan Antonio

YUL - SAT

YULSAT

Montreal Pierre Elliott Trudeau Intl

Thu 17/9

6:15 p.m.-12:15 a.m.

1 stop7h 00m

San Antonio

Sat 26/9

12:15 p.m.-11:56 p.m.

1 stop10h 41m

C$ 463
Quickest round-trip

MontrealSan Antonio

YUL - SAT

YULSAT

Montreal Pierre Elliott Trudeau Intl

Wed 3/6

6:51 p.m.-12:44 a.m.

1 stop6h 53m

San Antonio

Sat 6/6

5:00 p.m.-11:57 p.m.

1 stop5h 57m

C$ 478

MontrealSan Antonio

YUL - SAT

YULSAT

Montreal Pierre Elliott Trudeau Intl

Tue 28/4

11:23 a.m.-10:58 p.m.

2 stops12h 35m

San Antonio

Tue 5/5

12:09 p.m.-7:45 p.m.

1 stop6h 36m

C$ 479

MontrealSan Antonio

YUL - SAT

YULSAT

Montreal Pierre Elliott Trudeau Intl

Wed 1/7

6:00 a.m.-4:03 p.m.

2 stops11h 03m

San Antonio

Sun 12/7

6:40 a.m.-5:30 p.m.

1 stop9h 50m

C$ 479

MontrealSan Antonio

YUL - SAT

YULSAT

Montreal Pierre Elliott Trudeau Intl

Wed 8/7

9:45 a.m.-4:03 p.m.

1 stop7h 18m

San Antonio

Sun 19/7

6:40 a.m.-5:30 p.m.

1 stop9h 50m

C$ 479

MontrealSan Antonio

YUL - SAT

YULSAT

Montreal Pierre Elliott Trudeau Intl

Fri 1/5

12:42 p.m.-10:25 p.m.

1 stop10h 43m

San Antonio

Fri 8/5

5:20 a.m.-4:15 p.m.

1 stop9h 55m

C$ 479

MontrealSan Antonio

YUL - SAT

YULSAT

Montreal Pierre Elliott Trudeau Intl

Sat 2/5

7:00 a.m.-12:59 p.m.

1 stop6h 59m

San Antonio

Thu 7/5

5:20 a.m.-4:15 p.m.

1 stop9h 55m

C$ 479

Flights are sorted by cheapest round-trip flights first.

Deals found on 30/3

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

Best time to book a flight from Montreal to San Antonio

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

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

Currently, July is the cheapest month in which you can book a flight from Montreal to San Antonio (average of C$ 263). Flying from Montreal to San Antonio in January is currently the most expensive (average of C$ 653). 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’s the top layover airport for flights from Montreal to San Antonio?

Share of one-stop round-trip flights from Montreal to San Antonio chosen by Cheapflights users in the past 12 months, using the same layover each way.

Atlanta (ATL) – chosen by Cheapflights users on 83% of one-stop itineraries from Montreal to San Antonio on Cheapflights.

What’s the cheapest layover airport for flights from Montreal to San Antonio?

Average round-trip fare for 1-stop flights from Montreal to San Antonio, chosen by Cheapflights users in the past 12 months, with the same layover each way.

Atlanta (ATL) is the most affordable 1-stop option, with an average round-trip price of C$ 696.

What’s the fastest layover option from Montreal to San Antonio?

Shortest average travel time for 1-stop one-way flights from Montreal to San Antonio, based on itineraries clicked by Cheapflights users over the past 12 months, grouped by layover airport.

Flights via Detroit (DTW) have the shortest average one-way travel time for 1-stop routes: 5h 35m.

Which airport typically offers the quickest layover for flights from Montreal to San Antonio?

Average layover duration for 1-stop one-way flights from Montreal to San Antonio, chosen by Cheapflights users in the last 12 months, grouped by stopover airport.

Flights via Detroit (DTW) offer the fastest connection on this route, with an average layover time of 0h 39m.

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 4 April 2026.
Read through reviews of airlines operating flights from Montreal to San Antonio, such as WestJet and American Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
WestJet
7.2
Good
3,313 reviews
Check prices

Boarding

7.4

Crew

7.9

Overall

7.2

Comfort

7.0

Food

6.2

Entertainment

6.1

Reviews

1 / 20
10.0
Excellent

Joseph,Feb 2026

YYJ - YEG

Is just a domestic flight can't complain at all..but everything is great..
WestJet
7.2
Good
3,313 reviews
WestJet
7.2
Good
3,313 reviews
Check prices

Boarding

7.4

Crew

7.9

Overall

7.2

Comfort

7.0

Food

6.2

Entertainment

6.1

Reviews

1 / 20
10.0
Excellent

Joseph,Feb 2026

YYJ - YEG

Is just a domestic flight can't complain at all..but everything is great..
American Airlines
7.1
Good
11,557 reviews
WestJet
7.2
Good
3,313 reviews
Check prices

Boarding

7.4

Crew

7.9

Overall

7.2

Comfort

7.0

Food

6.2

Entertainment

6.1

Reviews

1 / 20
10.0
Excellent

Joseph,Feb 2026

YYJ - YEG

Is just a domestic flight can't complain at all..but everything is great..

Related info for your journey

Find useful and relevant information for your journey from Montreal to San Antonio. 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 into for flights to San Antonio from Montreal?

    San Antonio (SAT), located 12.2 km from the city centre, is the airport you fly into when you book flights from Montreal to San Antonio. 4 airlines have flights to San Antonio from Montreal on a regular basis. Booking flights from Montreal to San Antonio should not be difficult; the airport handles an average of 0 inbound flights from Montreal per day.

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

    Departing from Montreal to San Antonio will take you 7h. There are 2787 km between Montreal and San Antonio.

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

    Currently priced at C$ 314, United Airlines will fly you from Montreal to San Antonio and back. In addition to United Airlines, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from Delta and WestJet - these airlines can fly you to your destination from C$ 358 and C$ 502, respectively.

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

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

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

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

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

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

    Currently, July is the cheapest month in which you can book a flight from Montreal to San Antonio (average of C$ 263). Flying from Montreal to San Antonio in January is currently the most expensive (average of C$ 653). 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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Top 4 airlines flying from Montreal to San Antonio

Discover the top 4 airlines that operate flights from Montreal 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 4 April 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapestC$ 314AverageC$ 410FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
DeltaCheapestC$ 358AverageC$ 518FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
WestJetCheapestC$ 502AverageC$ 785FlexibilityNo cancel feeOn-time60%
Search WestJet flights
Air CanadaCheapestC$ 762AverageC$ 1,274FlexibilityNo cancel feeOn-time67%
Search Air Canada 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 Montreal to San Antonio?

Cheapflights goes through 900+ travel sites to look for the best flight deals for flights from Montreal to San Antonio. Too many options? Cheapflights also provides filters for things like airlines, price ranges, and number of stops to help you make a decision easily.

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

Cheapflights taps into our reliable network of hundreds of airlines and travel agencies to find the best deals for flights from Montreal to San Antonio for you. Better yet — we are completely free to use.

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

Yes! Cheapflights helps users easily find flights from Montreal to San Antonio with no change fees.

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

Of course! You can now track prices for flights from Montreal to San Antonio and get an alert from Cheapflights when they change. Have a valid email address ready and click the bell icon next to the flight deals above to set up your price alerts.

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