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Cheap flights from Montreal to San Diego from C$ 329

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 8/10. Fares are subject to change and may not be available on all flights or dates of travel.
YMQ — SAN
5 Aug — 12 Aug1
1 adult
1 adult, Economy, 0 bags
Cheapflights Tip: The best prices from Montreal to San Diego are usually found in April or September, booked 65 days in advance, depart on a Monday or Thursday and return on a Monday

Cheap flight deals from Montreal to San Diego

Enter your travel dates to find the best prices.

Cheapest flights from Montreal to San Diego
Explore the most affordable flight options available from Montreal to San Diego. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 6 July 2026.

Mon 16/119:20 p.m.
YUL
-
SAN
1 stop17h 40m
Air Canada
Wed 18/117:05 a.m.
SAN
-
YUL
1 stop10h 38m
Air Canada
Deal found 2/7C$ 564
Thu 29/105:34 p.m.
YUL
-
SAN
1 stop18h 42m
American Airlines
Tue 10/117:30 p.m.
SAN
-
YUL
2 stops13h 45m
American Airlines
Deal found 1/7C$ 565
Thu 5/1112:59 p.m.
YUL
-
SAN
1 stop8h 54m
American Airlines
Sat 14/117:30 p.m.
SAN
-
YUL
2 stops13h 45m
American Airlines
Deal found 3/7C$ 568
Thu 27/87:30 a.m.
YUL
-
SAN
1 stop11h 40m
Air Canada
Sat 5/97:00 a.m.
SAN
-
YUL
Nonstop5h 33m
Air Canada
Deal found 3/7C$ 571
Thu 24/126:00 a.m.
YUL
-
SAN
1 stop11h 11m
Delta
Sun 3/19:40 p.m.
SAN
-
YUL
1 stop11h 04m
Delta
Deal found 1/7C$ 576
Thu 10/97:00 a.m.
YUL
-
SAN
1 stop9h 18m
Delta
Mon 14/96:20 a.m.
SAN
-
YUL
1 stop8h 18m
Delta
Deal found 5/7C$ 578
Thu 12/114:15 p.m.
YUL
-
SAN
1 stop21h 30m
WestJet
Fri 20/1112:35 p.m.
SAN
-
YUL
2 stops32h 58m
WestJet
Deal found 2/7C$ 581
Fri 11/95:45 p.m.
YUL
-
SAN
2 stops23h 25m
WestJet
Tue 15/93:30 p.m.
SAN
-
YUL
2 stops29h 55m
WestJet
Deal found 1/7C$ 582
Tue 10/117:00 a.m.
YUL
-
SAN
2 stops19h 47m
Delta
Sun 22/1110:30 p.m.
SAN
-
YUL
1 stop10h 45m
Delta
Deal found 2/7C$ 583
Thu 29/107:00 a.m.
YUL
-
SAN
2 stops13h 17m
United Airlines
Fri 13/119:45 p.m.
SAN
-
YUL
1 stop14h 31m
United Airlines
Deal found 1/7C$ 585

Find flight deals from Montreal to San Diego

Discover tips and strategies to find the most affordable flight options for your journey from Montreal (YMQ) to San Diego (SAN). 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 6 July 2026.

Round-trip from

C$ 564

One-way from

C$ 329

Popular in

October

Cheapest in

April

Average price

C$ 657

Good round-trip deal

C$ 596 or less

Good one-way deal

C$ 297 or less
Air Canada
  • Air Canada
  • 16/11-18/11
  • 2 total stops
  • 28h 18m total
  • Montreal to San Diego
Search Deals
Delta
  • Delta
  • 8/10
  • 1 total stop
  • 12h 26m total
  • Montreal to San Diego
Search Deals
High demand for flights, 3% potential price rise
Search Deals
Cheapest flight prices on average. 1% potential price decrease (C$ 13 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in July 2026
Search Deals
Price to beat on a round-trip flight from Montreal (YMQ) to San Diego.
Search Deals
Price to beat on a one-way flight from Montreal (YMQ) to San Diego.
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Montreal to San Diego 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 6 July 2026.
Use the filters below to find and compare flights from Montreal to San Diego that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

MontrealSan Diego

YUL - SAN

YULSAN

Montreal Pierre Elliott Trudeau Intl

Thu 29/10

7:00 a.m.-5:17 p.m.

2 stops13h 17m

San Diego

Sat 7/11

6:50 a.m.-9:01 p.m.

1 stop11h 11m

C$ 585

MontrealSan Diego

YUL - SAN

YULSAN

Montreal Pierre Elliott Trudeau Intl

Thu 29/10

7:00 a.m.-5:17 p.m.

2 stops13h 17m

San Diego

Fri 13/11

9:45 p.m.-3:16 p.m.

1 stop14h 31m

C$ 585

MontrealSan Diego

YUL - SAN

YULSAN

Montreal Pierre Elliott Trudeau Intl

Fri 13/11

12:45 p.m.-8:18 p.m.

1 stop10h 33m

San Diego

Fri 20/11

10:30 p.m.-12:15 p.m.

1 stop10h 45m

C$ 590

MontrealSan Diego

YUL - SAN

YULSAN

Montreal Pierre Elliott Trudeau Intl

Tue 10/11

4:55 p.m.-9:52 p.m.

1 stop7h 57m

San Diego

Fri 20/11

10:30 p.m.-12:15 p.m.

1 stop10h 45m

C$ 590

MontrealSan Diego

YUL - SAN

YULSAN

Montreal Pierre Elliott Trudeau Intl

Thu 29/10

7:00 a.m.-12:40 p.m.

1 stop8h 40m

San Diego

Thu 12/11

6:15 a.m.-11:10 p.m.

2 stops13h 55m

C$ 630

MontrealSan Diego

YUL - SAN

YULSAN

Montreal Pierre Elliott Trudeau Intl

Mon 16/11

12:45 p.m.-11:03 p.m.

1 stop13h 18m

San Diego

Thu 19/11

10:30 p.m.-12:15 p.m.

1 stop10h 45m

C$ 632

MontrealSan Diego

YUL - SAN

YULSAN

Montreal Pierre Elliott Trudeau Intl

Thu 29/10

6:00 a.m.-2:25 p.m.

1 stop11h 25m

San Diego

Sun 8/11

9:45 p.m.-4:05 p.m.

2 stops15h 20m

C$ 633

MontrealSan Diego

YUL - SAN

YULSAN

Montreal Pierre Elliott Trudeau Intl

Thu 10/9

9:45 a.m.-8:02 p.m.

2 stops13h 17m

San Diego

Tue 15/9

6:30 p.m.-8:16 a.m.

1 stop10h 46m

C$ 654

MontrealSan Diego

YUL - SAN

YULSAN

Montreal Pierre Elliott Trudeau Intl

Tue 11/8

6:00 a.m.-11:50 p.m.

2 stops20h 50m

San Diego

Thu 27/8

8:00 a.m.-11:52 p.m.

1 stop12h 52m

C$ 679

MontrealSan Diego

YUL - SAN

YULSAN

Montreal Pierre Elliott Trudeau Intl

Mon 31/8

2:20 p.m.-8:29 p.m.

1 stop9h 09m

San Diego

Tue 8/9

7:00 a.m.-3:27 p.m.

Nonstop5h 27m

C$ 690

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/7

Showing 1-10 of 23 resultsSorted by cheapest first
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Best time to book a flight from Montreal to San Diego

Have a flexible travel schedule? Discover the best time to fly to San Diego 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 Diego

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

Currently, July is the cheapest month in which you can book a flight from Montreal to San Diego (average of C$ 194). Flying from Montreal to San Diego in January is currently the most expensive (average of C$ 406). 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 YMQ to SAN?

Find hourly flight availability from Montreal to San Diego. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 6 July 2026.

When flying from Montreal to San Diego, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

How much does it cost to fly round-trip from Montreal to San Diego?

What’s the top layover airport for flights from Montreal to San Diego?

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

Toronto (YYZ) – chosen by Cheapflights users on 30% of one-stop itineraries from Montreal to San Diego on Cheapflights.

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

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

Chicago (ORD) is the most affordable 1-stop option, with an average round-trip price of C$ 509.

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

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

Flights via Denver (DEN) have the shortest average one-way travel time for 1-stop routes: 8h 11m.

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

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

Flights via Denver (DEN) offer the fastest connection on this route, with an average layover time of 1h 07m.

How far ahead should I book a flight from Montreal to San Diego?

Booking 29 days in advance of your planned departure date is, on average, the best time to get cheap flights from Montreal to San Diego. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

Reviews of airlines servicing San Diego

Get insights into the airlines that provide service to San Diego. 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 Diego. Reviews last updated 6 July 2026.
Check out reviews from past customers who have flown with Delta,United Airlines, andAmerican Airlines from Montreal to San Diego to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
7.8
Good
8,452 reviews
Check prices

Comfort

7.8

Overall

7.8

Entertainment

7.8

Food

7.2

Boarding

8.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
Delta
7.8
Good
8,452 reviews
Delta
7.8
Good
8,452 reviews
Check prices

Comfort

7.8

Overall

7.8

Entertainment

7.8

Food

7.2

Boarding

8.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
United Airlines
7.4
Good
9,940 reviews
Delta
7.8
Good
8,452 reviews
Check prices

Comfort

7.8

Overall

7.8

Entertainment

7.8

Food

7.2

Boarding

8.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
American Airlines
7.1
Good
11,782 reviews
Delta
7.8
Good
8,452 reviews
Check prices

Comfort

7.8

Overall

7.8

Entertainment

7.8

Food

7.2

Boarding

8.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
Air Canada
7.1
Good
11,308 reviews
Delta
7.8
Good
8,452 reviews
Check prices

Comfort

7.8

Overall

7.8

Entertainment

7.8

Food

7.2

Boarding

8.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Related info for your journey

Find useful and relevant information for your journey from Montreal to San Diego. 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 Diego from Montreal?

    San Diego (SAN), located 4.2 km from the city centre, is the airport you fly into when you book flights from Montreal to San Diego. 4 airlines have flights to San Diego from Montreal on a regular basis. Booking flights from Montreal to San Diego should not be difficult; the airport handles an average of 1 inbound flight from Montreal per day.

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

    Departing from Montreal to San Diego will take you 10h 33m. Montreal and San Diego are separated by a distance of 3948 km. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.

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

    Currently priced at C$ 279, American Airlines will fly you from Montreal to San Diego and back. In addition to American Airlines, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from Delta and United Airlines - these airlines can fly you to your destination from C$ 285 and C$ 370, respectively. American Airlines is currently priced 57% below the average price you’ll pay for this route.

  • What are the cheapest airlines to fly from Montreal to San Diego one-way?

    For one-way options, check prices for United Airlines. According to our data, you can fly for as low as C$ 175. Users have also found prices from C$ 275 and C$ 297 on American Airlines and Air Canada, respectively.

  • What are the cheapest flights from Montreal to San Diego?

    While on average a flight from Montreal to San Diego is generally C$ 481, our data shows the cheapest flight currently is C$ 297. When looking at the most popular route, (Montreal Pierre Elliott Trudeau Intl - San Diego), you can expect to pay C$ 511 for that flight.

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

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

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

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

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

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

    Currently, July is the cheapest month in which you can book a flight from Montreal to San Diego (average of C$ 194). Flying from Montreal to San Diego in January is currently the most expensive (average of C$ 406). 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

Travelling to a place near San Diego?

Book flights to San Diego if you plan to visit one of these locations
El Cajon
La Mesa
Borrego Springs

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Fly from Montreal to San Diego on these airlines

Choose from the following airlines for your flight from Montreal to San Diego. Flights are based on user searches made on Cheapflights and were last updated on 6 July 2026.
Air Canada flights from Montreal to San Diego
United Airlines flights from Montreal to San Diego
Delta flights from Montreal to San Diego

Top 4 airlines flying from Montreal to San Diego

Discover the top 4 airlines that operate flights from Montreal to San Diego. 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 6 July 2026.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapestC$ 279AverageC$ 435FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
DeltaCheapestC$ 285AverageC$ 568FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
United AirlinesCheapestC$ 370AverageC$ 587FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
Air CanadaCheapestC$ 378AverageC$ 650FlexibilityNo 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 Diego?

Cheapflights helps you search for flights from Montreal to San Diego via 900+ travel sites so you don’t have to. After performing a flight search, users can also filter their flight selection by filtering for price, number of stops, airlines, and so on.

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

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

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

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

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

Of course! You can now track prices for flights from Montreal to San Diego 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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