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Cheap flights from Montreal to San Diego from C$ 242

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 28/9. Fares are subject to change and may not be available on all flights or dates of travel.
YMQ — SAN
4 Jun — 11 Jun1
1 adult
1 adult, Economy, 0 bags
Cheapflights Tip: The best prices from Montreal to San Diego are usually found in April or July, booked 65 days in advance, depart on a Sunday or Tuesday and return on a Tuesday

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 5 May 2026.

Mon 21/95:45 p.m.
YUL
-
SAN
Nonstop5h 51m
Air Canada
Mon 28/97:00 a.m.
SAN
-
YUL
Nonstop5h 27m
Air Canada
Deal found 2/5C$ 414
Wed 16/97:15 a.m.
YUL
-
SAN
1 stop9h 55m
WestJet
Thu 24/93:30 p.m.
SAN
-
YUL
1 stop12h 35m
WestJet
Deal found 3/5C$ 430
Mon 21/97:15 a.m.
YUL
-
SAN
1 stop9h 55m
WestJet
Mon 28/93:30 p.m.
SAN
-
YUL
1 stop12h 35m
WestJet
Deal found 2/5C$ 434
Fri 4/95:45 p.m.
YUL
-
SAN
Nonstop5h 54m
Air Canada
Sat 5/97:00 a.m.
SAN
-
YUL
Nonstop5h 33m
Air Canada
Deal found 3/5C$ 444
Sat 5/97:15 a.m.
YUL
-
SAN
1 stop9h 55m
WestJet
Tue 8/93:30 p.m.
SAN
-
YUL
1 stop12h 35m
WestJet
Deal found 3/5C$ 448
Tue 15/97:15 a.m.
YUL
-
SAN
1 stop9h 55m
WestJet
Fri 25/93:30 p.m.
SAN
-
YUL
1 stop12h 35m
WestJet
Deal found 3/5C$ 449
Fri 4/99:45 a.m.
YUL
-
SAN
2 stops10h 41m
United Airlines
Wed 9/95:00 p.m.
SAN
-
YUL
2 stops12h 16m
United Airlines
Deal found 3/5C$ 452
Sat 5/96:00 a.m.
YUL
-
SAN
1 stop8h 35m
Air Canada
Sun 6/97:00 a.m.
SAN
-
YUL
Nonstop5h 33m
Air Canada
Deal found 3/5C$ 455
Tue 15/97:15 a.m.
YUL
-
SAN
1 stop9h 55m
WestJet
Thu 24/93:30 p.m.
SAN
-
YUL
2 stops22h 15m
WestJet
Deal found 3/5C$ 458
Mon 31/87:15 a.m.
YUL
-
SAN
1 stop9h 55m
WestJet
Thu 10/93:30 p.m.
SAN
-
YUL
1 stop12h 35m
WestJet
Deal found 3/5C$ 483

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 5 May 2026.

Round-trip from

C$ 414

One-way from

C$ 242

Popular in

February

Cheapest in

April

Average price

C$ 573

Good round-trip deal

C$ 549 or less
Air Canada
  • Air Canada
  • 21/9-28/9
  • Nonstop
  • 11h 18m total
  • Montreal to San Diego
Search Deals
Air Canada
  • Air Canada
  • 28/9
  • Nonstop
  • 5h 51m total
  • Montreal to San Diego
Search Deals
Highest demand for flights based on searches. 12% potential increase in price (C$ 108 potential increase over avg. RT price).
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 May 2026
Search Deals
Price to beat on a round-trip 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 5 May 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

Fri 18/9

7:00 a.m.-3:21 p.m.

1 stop11h 21m

San Diego

Wed 23/9

8:00 a.m.-11:56 p.m.

1 stop12h 56m

C$ 452

MontrealSan Diego

YUL - SAN

YULSAN

Montreal Pierre Elliott Trudeau Intl

Thu 24/9

6:35 p.m.-12:29 a.m.

1 stop8h 54m

San Diego

Thu 22/10

4:45 p.m.-10:40 a.m.

1 stop14h 55m

C$ 452

MontrealSan Diego

YUL - SAN

YULSAN

Montreal Pierre Elliott Trudeau Intl

Fri 23/10

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

1 stop9h 09m

San Diego

Fri 30/10

6:30 p.m.-1:10 p.m.

2 stops15h 40m

C$ 519

MontrealSan Diego

YUL - SAN

YULSAN

Montreal Pierre Elliott Trudeau Intl

Thu 3/9

12:45 p.m.-6:23 p.m.

1 stop8h 38m

San Diego

Mon 7/9

8:50 a.m.-11:34 p.m.

1 stop11h 44m

C$ 534
Quickest round-trip

MontrealSan Diego

YUL - SAN

YULSAN

Montreal Pierre Elliott Trudeau Intl

Thu 28/5

12:49 p.m.-6:01 p.m.

1 stop8h 12m

San Diego

Wed 10/6

1:02 p.m.-11:55 p.m.

1 stop7h 53m

C$ 535

MontrealSan Diego

YUL - SAN

YULSAN

Montreal Pierre Elliott Trudeau Intl

Fri 22/5

12:52 p.m.-6:01 p.m.

1 stop8h 09m

San Diego

Tue 26/5

10:53 a.m.-11:57 p.m.

1 stop10h 04m

C$ 537

MontrealSan Diego

YUL - SAN

YULSAN

Montreal Pierre Elliott Trudeau Intl

Fri 22/5

6:00 a.m.-2:20 p.m.

1 stop11h 20m

San Diego

Sat 30/5

8:00 a.m.-11:57 p.m.

1 stop12h 57m

C$ 537

MontrealSan Diego

YUL - SAN

YULSAN

Montreal Pierre Elliott Trudeau Intl

Sat 16/5

6:00 a.m.-2:20 p.m.

1 stop11h 20m

San Diego

Sat 30/5

8:00 a.m.-11:57 p.m.

1 stop12h 57m

C$ 538

MontrealSan Diego

YUL - SAN

YULSAN

Montreal Pierre Elliott Trudeau Intl

Wed 3/6

6:00 a.m.-2:20 p.m.

1 stop11h 20m

San Diego

Wed 10/6

1:02 p.m.-11:55 p.m.

1 stop7h 53m

C$ 538

MontrealSan Diego

YUL - SAN

YULSAN

Montreal Pierre Elliott Trudeau Intl

Thu 28/5

2:20 p.m.-8:23 p.m.

1 stop9h 03m

San Diego

Mon 1/6

8:32 p.m.-1:09 p.m.

2 stops13h 37m

C$ 539

Flights are sorted by cheapest round-trip flights first.

Deals found on 30/4

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

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

Booking 56 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.

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

Currently, June is the cheapest month in which you can book a flight from Montreal to San Diego (average of C$ 123). Flying from Montreal to San Diego in February is currently the most expensive (average of C$ 415). 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 5 May 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.

Chicago (ORD) – chosen by Cheapflights users on 33% 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.

Washington, D.C. (IAD) is the most affordable 1-stop option, with an average round-trip price of C$ 490.

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.

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 5 May 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
7.9
Good
8,459 reviews
Check prices

Entertainment

7.8

Boarding

8.1

Food

7.2

Overall

7.9

Comfort

7.9

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
7.9
Good
8,459 reviews
Delta
7.9
Good
8,459 reviews
Check prices

Entertainment

7.8

Boarding

8.1

Food

7.2

Overall

7.9

Comfort

7.9

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
9,684 reviews
Delta
7.9
Good
8,459 reviews
Check prices

Entertainment

7.8

Boarding

8.1

Food

7.2

Overall

7.9

Comfort

7.9

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
11,667 reviews
Delta
7.9
Good
8,459 reviews
Check prices

Entertainment

7.8

Boarding

8.1

Food

7.2

Overall

7.9

Comfort

7.9

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
11,000 reviews
Delta
7.9
Good
8,459 reviews
Check prices

Entertainment

7.8

Boarding

8.1

Food

7.2

Overall

7.9

Comfort

7.9

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 8h 54m. 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$ 268, Delta will fly you from Montreal to San Diego and back. In addition to Delta, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from American Airlines and Air Canada - these airlines can fly you to your destination from C$ 268 and C$ 325, respectively. Delta is currently priced 54% 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$ 168. Users have also found prices from C$ 219 and C$ 264 on Air Canada and American Airlines, respectively.

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

    While on average a flight from Montreal to San Diego is generally C$ 650, our data shows the cheapest flight currently is C$ 452. When looking at the most popular route, (Montreal Pierre Elliott Trudeau Intl - San Diego), you can expect to pay C$ 452 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, June is the cheapest month in which you can book a flight from Montreal to San Diego (average of C$ 123). Flying from Montreal to San Diego in February is currently the most expensive (average of C$ 415). 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 5 May 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 5 May 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapestC$ 268AverageC$ 499FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
American AirlinesCheapestC$ 268AverageC$ 418FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
Air CanadaCheapestC$ 325AverageC$ 592FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
United AirlinesCheapestC$ 361AverageC$ 514FlexibilityNo 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 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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