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Cheap flights from Montreal to San Diego from C$ 241

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 19/8. Fares are subject to change and may not be available on all flights or dates of travel.
YMQ — SAN
1 Jul — 8 Jul1
1 adult

Cheapflights Tip: The best prices from Montreal to San Diego are usually found in March or April, booked 34 days in advance, depart on a Wednesday or Tuesday and return on a Saturday

Cheap 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 26 June 2025.

Round-trip from

C$ 412

One-way from

C$ 241

Popular in

December

Cheapest in

March

Average price

C$ 477

Good round-trip deal

C$ 464 or less

Good one-way deal

C$ 220 or less
Air Canada
  • Air Canada
  • 18/8-24/8
  • Nonstop
  • 11h 22m total
  • Montreal to San Diego
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Air Canada
  • Air Canada
  • 19/8
  • Nonstop
  • 5h 53m total
  • Montreal to San Diego
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Highest demand for flights based on searches. 14% potential increase in price (C$ 132 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease (C$ 32 potential savings vs. average RT price).
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Average for round-trip flights in June 2025
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Price to beat on a round-trip flight from Montreal (YMQ) to San Diego.
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Price to beat on a one-way flight from Montreal (YMQ) to San Diego.
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Find flight deals from Montreal to San Diego

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 26 June 2025.

Mon 18/84:45 p.m.YUL - SAN
Nonstop5h 53mAir Canada
Sun 24/88:10 a.m.SAN - YUL
Nonstop5h 29mAir Canada
Deal found 25/6C$ 412
Thu 14/87:00 a.m.YUL - SAN
1 stop9h 20mWestJet
Thu 21/811:15 a.m.SAN - YUL
1 stop10h 28mWestJet
Deal found 24/6C$ 416
Mon 18/86:30 p.m.YUL - SAN
1 stop8h 45mUnited Airlines
Sun 24/810:30 p.m.SAN - YUL
1 stop14h 40mUnited Airlines
Deal found 25/6C$ 433
Wed 20/85:29 p.m.YUL - SAN
1 stop23h 38mAmerican Airlines
Thu 21/84:20 p.m.SAN - YUL
2 stops16h 16mAmerican Airlines
Deal found 24/6C$ 435
Wed 30/76:00 a.m.YUL - SAN
1 stop7h 03mDelta
Sat 30/810:40 p.m.SAN - YUL
1 stop10h 18mDelta
Deal found 24/6C$ 459
Thu 14/85:30 p.m.YUL - SAN
2 stops21h 39mMultiple Airlines
Thu 21/81:12 p.m.SAN - YUL
2 stops16h 50mMultiple Airlines
Deal found 24/6C$ 492

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 26 June 2025.
Use the filters below to find and compare flights from Montreal to San Diego that are best for you.

Fly from

Montreal

Fly to

San Diego

Route

Depart

Return

Price

MontrealSan Diego

YUL - SAN

YULSAN

Montreal Pierre Elliott Trudeau Intl

Mon 18/8

4:45 p.m.-7:38 p.m.

Nonstop5h 53m

San Diego

Sun 24/8

8:10 a.m.-4:39 p.m.

Nonstop5h 29m

C$ 412

MontrealSan Diego

YUL - SAN

YULSAN

Montreal Pierre Elliott Trudeau Intl

Thu 14/8

7:00 a.m.-1:20 p.m.

1 stop9h 20m

San Diego

Thu 21/8

11:15 a.m.-12:43 a.m.

1 stop10h 28m

C$ 416

MontrealSan Diego

YUL - SAN

YULSAN

Montreal Pierre Elliott Trudeau Intl

Mon 18/8

6:30 p.m.-12:15 a.m.

1 stop8h 45m

San Diego

Sun 24/8

10:30 p.m.-4:10 p.m.

1 stop14h 40m

C$ 433

MontrealSan Diego

YUL - SAN

YULSAN

Montreal Pierre Elliott Trudeau Intl

Wed 20/8

5:29 p.m.-2:07 p.m.

1 stop23h 38m

San Diego

Thu 21/8

4:20 p.m.-11:36 a.m.

2 stops16h 16m

C$ 435

MontrealSan Diego

YUL - SAN

YULSAN

Montreal Pierre Elliott Trudeau Intl

Wed 30/7

6:00 a.m.-10:03 a.m.

1 stop7h 03m

San Diego

Sat 30/8

10:40 p.m.-11:58 a.m.

1 stop10h 18m

C$ 459

MontrealSan Diego

YUL - SAN

YULSAN

Montreal Pierre Elliott Trudeau Intl

Thu 14/8

5:30 p.m.-12:09 p.m.

2 stops21h 39m

San Diego

Thu 21/8

1:12 p.m.-9:02 a.m.

2 stops16h 50m

C$ 492

MontrealSan Diego

YUL - SAN

YULSAN

Montreal Pierre Elliott Trudeau Intl

Tue 19/8

4:45 p.m.-7:38 p.m.

Nonstop5h 53m

C$ 241

MontrealSan Diego

YUL - SAN

YULSAN

Montreal Pierre Elliott Trudeau Intl

Tue 29/7

7:00 a.m.-1:20 p.m.

1 stop9h 20m

C$ 242

MontrealSan Diego

YUL - SAN

YULSAN

Montreal Pierre Elliott Trudeau Intl

Tue 15/7

6:45 a.m.-9:55 a.m.

3 stops30h 10m

C$ 249

MontrealSan Diego

YUL - SAN

YULSAN

Montreal Pierre Elliott Trudeau Intl

Mon 18/8

6:30 p.m.-12:15 a.m.

1 stop8h 45m

C$ 263

Flights are sorted by cheapest round-trip flights first.

Deals found on 25/6

Showing 1-10 of 12 results
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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?

Use this chart to determine the optimal time to book a round-trip flight from Montreal to San Diego. Price data was last updated on 20 June 2025.

Booking 34 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, May is the cheapest month in which you can book a flight from Montreal to San Diego (average of C$ 289). Flying from Montreal to San Diego in November is currently the most expensive (average of C$ 390). 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 26 June 2025.

One of the essential ways to save on airfare from Montreal to San Diego is to remain as flexible as possible. Flights that are in the morning tend to be the most expensive. A flight in the afternoon could potentially save you up to 37% on airfare.

What is the cheapest day to fly from Montreal to San Diego?

Use this chart to determine the cheapest time to fly round-trip from Montreal to San Diego. Price data was last updated on 16 December 2024.

Travelers seeking maximum savings on their Montreal to San Diego flight should consider departing on Tuesday afternoons when fares are most often at their lowest. Sunday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

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 26 June 2025.
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
8.0
Very good
7,964 reviews
Check prices

Boarding

8.2

Entertainment

7.9

Comfort

7.9

Food

7.3

Crew

8.5

Overall

8.0

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
8.0
Very good
7,964 reviews
Delta
8.0
Very good
7,964 reviews
Check prices

Boarding

8.2

Entertainment

7.9

Comfort

7.9

Food

7.3

Crew

8.5

Overall

8.0

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
8,838 reviews
Delta
8.0
Very good
7,964 reviews
Check prices

Boarding

8.2

Entertainment

7.9

Comfort

7.9

Food

7.3

Crew

8.5

Overall

8.0

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
7.2
Good
10,000 reviews
Delta
8.0
Very good
7,964 reviews
Check prices

Boarding

8.2

Entertainment

7.9

Comfort

7.9

Food

7.3

Crew

8.5

Overall

8.0

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
WestJet
7.2
Good
2,893 reviews
Delta
8.0
Very good
7,964 reviews
Check prices

Boarding

8.2

Entertainment

7.9

Comfort

7.9

Food

7.3

Crew

8.5

Overall

8.0

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
9,633 reviews
Delta
8.0
Very good
7,964 reviews
Check prices

Boarding

8.2

Entertainment

7.9

Comfort

7.9

Food

7.3

Crew

8.5

Overall

8.0

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. 5 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.

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

    Currently priced at C$ 412, Air Canada will fly you from Montreal to San Diego and back. In addition to Air Canada, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from WestJet and United Airlines - these airlines can fly you to your destination from C$ 416 and C$ 433, respectively. Air Canada is currently priced 26% 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 Air Canada. According to our data, you can fly for as low as C$ 241. Users have also found prices from C$ 242 and C$ 263 on WestJet and United 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$ 405, our data shows the cheapest flight currently is C$ 202. When looking at the most popular route, (Montreal Pierre Elliott Trudeau Intl - San Diego), you can expect to pay C$ 429 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, May is the cheapest month in which you can book a flight from Montreal to San Diego (average of C$ 289). Flying from Montreal to San Diego in November is currently the most expensive (average of C$ 390). 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 Montreal?

Book flights to Montreal if you plan to visit one of these locations
Borrego Springs
El Cajon

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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 26 June 2025.
Air Canada flights from Montreal to San Diego
United Airlines flights from Montreal to San Diego
Delta flights from Montreal to San Diego

Top 5 airlines flying from Montreal to San Diego

Discover the top 5 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 26 June 2025.
AirlineCheapestAverageFlexibilityOn-time
Porter AirlinesCheapestC$ 346AverageC$ 573FlexibilityNo cancel feeOn-time52%
Search Porter Airlines flights
Air CanadaCheapestC$ 356AverageC$ 622FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
United AirlinesCheapestC$ 358AverageC$ 519FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
American AirlinesCheapestC$ 359AverageC$ 494FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
DeltaCheapestC$ 385AverageC$ 493FlexibilityNo cancel feeOn-timeN/A
Search Delta 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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