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Cheap flights from Montreal to San Diego from C$ 282

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 25/1. Fares are subject to change and may not be available on all flights or dates of travel.
YMQ — SAN
8 Jan — 15 Jan1
1 adult
1 adult, Economy, 0 bags

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

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 9 December 2025.

Tue 16/126:30 p.m.YUL - SAN
2 stops17h 46mDelta
Wed 14/110:00 p.m.SAN - YUL
1 stop11h 04mDelta
Deal found 9/12C$ 810
Tue 16/125:25 p.m.YUL - SAN
2 stops33h 17mUnited Airlines
Wed 14/18:37 p.m.SAN - YUL
2 stops17h 21mUnited Airlines
Deal found 9/12C$ 863
Sun 14/129:25 a.m.YUL - SAN
2 stops17h 17mUnited Airlines
Tue 6/110:00 p.m.SAN - YUL
1 stop10h 30mUnited Airlines
Deal found 7/12C$ 864
Mon 22/125:25 p.m.YUL - SAN
2 stops29h 32mUnited Airlines
Tue 30/128:45 p.m.SAN - YUL
2 stops10h 25mUnited Airlines
Deal found 9/12C$ 891
Thu 11/126:45 a.m.YUL - SAN
1 stop32h 12mMultiple Airlines
Fri 9/110:52 a.m.SAN - YUL
2 stops23h 40mMultiple Airlines
Deal found 7/12C$ 895
Mon 15/125:25 p.m.YUL - SAN
2 stops29h 27mUnited Airlines
Thu 8/16:30 a.m.SAN - YUL
1 stop7h 28mUnited Airlines
Deal found 8/12C$ 899
Tue 16/127:00 a.m.YUL - SAN
1 stop15h 43mAmerican Airlines
Wed 14/111:30 a.m.SAN - YUL
1 stop8h 29mAmerican Airlines
Deal found 9/12C$ 917
Sat 20/127:30 a.m.YUL - SAN
1 stop17h 15mAmerican Airlines
Tue 3/210:45 p.m.SAN - YUL
1 stop12h 00mAmerican Airlines
Deal found 8/12C$ 924
Sun 14/126:45 a.m.YUL - SAN
2 stops28h 54mMultiple Airlines
Tue 6/110:58 p.m.SAN - YUL
1 stop22h 32mMultiple Airlines
Deal found 7/12C$ 932
Sun 14/126:00 a.m.YUL - SAN
1 stop8h 53mAir Canada
Tue 6/17:52 p.m.SAN - YUL
1 stop17h 57mAir Canada
Deal found 7/12C$ 936
Sat 13/127:30 a.m.YUL - SAN
1 stop14h 32mAmerican Airlines
Wed 7/110:45 p.m.SAN - YUL
1 stop12h 00mAmerican Airlines
Deal found 8/12C$ 965

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 9 December 2025.

Round-trip from

C$ 521

One-way from

C$ 282

Popular in

December

Cheapest in

January

Average price

C$ 617

Good round-trip deal

C$ 535 or less
American Airlines
  • American Airlines
  • 29/1-6/2
  • 4 total stops
  • 26h 30m total
  • Montreal to San Diego
Search Deals
25/1
  • 25/1
  • 3 total stops
  • 43h 08m total
  • Montreal to San Diego
Search Deals
Highest demand for flights based on searches. 5% potential increase in price (C$ 41 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (C$ 15 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
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 9 December 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

Thu 2/4

12:42 p.m.-11:09 p.m.

1 stop13h 27m

San Diego

Thu 9/4

9:25 p.m.-11:37 a.m.

1 stop11h 12m

C$ 527

MontrealSan Diego

YUL - SAN

YULSAN

Montreal Pierre Elliott Trudeau Intl

Sun 18/1

7:00 a.m.-5:39 p.m.

1 stop13h 39m

San Diego

Fri 30/1

10:00 p.m.-12:12 p.m.

1 stop11h 12m

C$ 530

MontrealSan Diego

YUL - SAN

YULSAN

Montreal Pierre Elliott Trudeau Intl

Tue 2/6

12:45 p.m.-10:58 p.m.

1 stop13h 13m

San Diego

Thu 18/6

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

1 stop12h 56m

C$ 532

MontrealSan Diego

YUL - SAN

YULSAN

Montreal Pierre Elliott Trudeau Intl

Wed 7/1

7:00 a.m.-5:39 p.m.

1 stop13h 39m

San Diego

Sat 17/1

10:00 p.m.-12:04 p.m.

1 stop11h 04m

C$ 532

MontrealSan Diego

YUL - SAN

YULSAN

Montreal Pierre Elliott Trudeau Intl

Thu 29/1

4:46 p.m.-10:31 p.m.

1 stop8h 45m

San Diego

Mon 2/2

10:30 p.m.-11:45 a.m.

1 stop10h 15m

C$ 532

MontrealSan Diego

YUL - SAN

YULSAN

Montreal Pierre Elliott Trudeau Intl

Wed 27/5

6:00 a.m.-10:46 a.m.

1 stop7h 46m

San Diego

Sat 30/5

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

1 stop11h 44m

C$ 532

MontrealSan Diego

YUL - SAN

YULSAN

Montreal Pierre Elliott Trudeau Intl

Wed 1/4

12:42 p.m.-6:51 p.m.

1 stop9h 09m

San Diego

Tue 14/4

9:40 p.m.-11:47 a.m.

1 stop11h 07m

C$ 532

MontrealSan Diego

YUL - SAN

YULSAN

Montreal Pierre Elliott Trudeau Intl

Wed 20/5

3:00 p.m.-11:19 p.m.

1 stop11h 19m

San Diego

Sat 23/5

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

1 stop11h 44m

C$ 532

MontrealSan Diego

YUL - SAN

YULSAN

Montreal Pierre Elliott Trudeau Intl

Fri 5/6

12:45 p.m.-10:58 p.m.

1 stop13h 13m

San Diego

Sun 7/6

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

1 stop11h 44m

C$ 532

MontrealSan Diego

YUL - SAN

YULSAN

Montreal Pierre Elliott Trudeau Intl

Thu 8/1

2:40 p.m.-8:51 p.m.

1 stop9h 11m

San Diego

Tue 13/1

10:30 p.m.-1:32 p.m.

1 stop12h 02m

C$ 532

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/12

Showing 1-10 of 21 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 5 December 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, April is the cheapest month in which you can book a flight from Montreal to San Diego (average of C$ 185). Flying from Montreal to San Diego in September is currently the most expensive (average of C$ 355). 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 9 December 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 evening tend to be the most expensive. A flight in the afternoon could potentially save you up to 66% 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. Saturday evenings flights should be avoided if possible as fares are typically the most expensive at this time.

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 40% 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.

Newark (EWR) is the most affordable 1-stop option, with an average round-trip price of C$ 424.

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: 7h 57m.

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 0h 58m.

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 9 December 2025.
Check out reviews from past customers who have flown with Porter Airlines,Delta, andUnited 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.
Porter Airlines
8.0
Very good
397 reviews
Check prices

Boarding

8.2

Crew

8.6

Comfort

8.0

Food

7.6

Overall

8.0

Entertainment

7.0

Reviews

1 / 20
8.0
Excellent

Mohameed,Nov 2025

LAS - YYZ

It's good. Planes are new and fresh. WiFi is best and stands out
Porter Airlines
8.0
Very good
397 reviews
Porter Airlines
8.0
Very good
397 reviews
Check prices

Boarding

8.2

Crew

8.6

Comfort

8.0

Food

7.6

Overall

8.0

Entertainment

7.0

Reviews

1 / 20
8.0
Excellent

Mohameed,Nov 2025

LAS - YYZ

It's good. Planes are new and fresh. WiFi is best and stands out
Delta
7.9
Good
8,009 reviews
Porter Airlines
8.0
Very good
397 reviews
Check prices

Boarding

8.2

Crew

8.6

Comfort

8.0

Food

7.6

Overall

8.0

Entertainment

7.0

Reviews

1 / 20
8.0
Excellent

Mohameed,Nov 2025

LAS - YYZ

It's good. Planes are new and fresh. WiFi is best and stands out
United Airlines
7.4
Good
9,088 reviews
Porter Airlines
8.0
Very good
397 reviews
Check prices

Boarding

8.2

Crew

8.6

Comfort

8.0

Food

7.6

Overall

8.0

Entertainment

7.0

Reviews

1 / 20
8.0
Excellent

Mohameed,Nov 2025

LAS - YYZ

It's good. Planes are new and fresh. WiFi is best and stands out
American Airlines
7.2
Good
11,043 reviews
Porter Airlines
8.0
Very good
397 reviews
Check prices

Boarding

8.2

Crew

8.6

Comfort

8.0

Food

7.6

Overall

8.0

Entertainment

7.0

Reviews

1 / 20
8.0
Excellent

Mohameed,Nov 2025

LAS - YYZ

It's good. Planes are new and fresh. WiFi is best and stands out
Air Canada
7.1
Good
10,514 reviews
Porter Airlines
8.0
Very good
397 reviews
Check prices

Boarding

8.2

Crew

8.6

Comfort

8.0

Food

7.6

Overall

8.0

Entertainment

7.0

Reviews

1 / 20
8.0
Excellent

Mohameed,Nov 2025

LAS - YYZ

It's good. Planes are new and fresh. WiFi is best and stands out

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. 6 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 0 inbound flights from Montreal per day.

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

    Departing from Montreal to San Diego will take you 13h 27m. Montreal and San Diego are separated by a distance of 3948 km.

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

    Currently priced at C$ 271, WestJet will fly you from Montreal to San Diego and back. In addition to WestJet, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from Delta and American Airlines - these airlines can fly you to your destination from C$ 272 and C$ 272, respectively. WestJet is currently priced 46% 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$ 221. Users have also found prices from C$ 225 and C$ 239 on United Airlines and Delta, respectively.

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

    While on average a flight from Montreal to San Diego is generally C$ 538, our data shows the cheapest flight currently is C$ 340. When looking at the most popular route, (Montreal Pierre Elliott Trudeau Intl - San Diego), you can expect to pay C$ 527 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, April is the cheapest month in which you can book a flight from Montreal to San Diego (average of C$ 185). Flying from Montreal to San Diego in September is currently the most expensive (average of C$ 355). 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 9 December 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 6 airlines flying from Montreal to San Diego

Discover the top 6 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 9 December 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapestC$ 272AverageC$ 424FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
DeltaCheapestC$ 300AverageC$ 456FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
Porter AirlinesCheapestC$ 344AverageC$ 484FlexibilityNo cancel feeOn-time52%
Search Porter Airlines flights
Air CanadaCheapestC$ 354AverageC$ 566FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
WestJetCheapestC$ 361AverageC$ 396FlexibilityNo cancel feeOn-time60%
Search WestJet flights
United AirlinesCheapestC$ 361AverageC$ 500FlexibilityNo 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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