Cheap flights from Montreal to San Diego from C$ 286
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 8/12. Fares are subject to change and may not be available on all flights or dates of travel.
YMQ — SAN
6 Dec — 13 Dec1
Round-trip
1 adult
Economy
Round-trip
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
Find 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 November 2025.
Sat 6/122:59 p.m.YUL - SAN
1 stop9h 19mDelta
Fri 12/1210:00 p.m.SAN - YUL
1 stop11h 00mDelta
Deal found 4/11C$ 533
Sat 6/1212:59 p.m.YUL - SAN
1 stop11h 45mAmerican Airlines
Sun 14/129:54 p.m.SAN - YUL
1 stop12h 55mAmerican Airlines
Deal found 6/11C$ 537
Tue 2/127:10 a.m.YUL - SAN
2 stops19h 49mDelta
Mon 8/1210:30 p.m.SAN - YUL
1 stop10h 05mDelta
Deal found 5/11C$ 542
Sat 6/124:45 p.m.YUL - SAN
1 stop8h 45mUnited Airlines
Fri 12/125:23 p.m.SAN - YUL
2 stops17h 37mUnited Airlines
Deal found 4/11C$ 554
Wed 17/124:45 p.m.YUL - SAN
1 stop8h 45mUnited Airlines
Mon 5/14:45 p.m.SAN - YUL
1 stop18h 15mUnited Airlines
Deal found 5/11C$ 560
Thu 27/117:00 a.m.YUL - SAN
1 stop11h 31mDelta
Thu 11/126:15 a.m.SAN - YUL
1 stop8h 10mDelta
Deal found 5/11C$ 563
Fri 28/114:00 p.m.YUL - SAN
1 stop19h 34mAmerican Airlines
Tue 9/1210:23 p.m.SAN - YUL
1 stop12h 26mAmerican Airlines
Deal found 5/11C$ 576
Sat 6/123:00 p.m.YUL - SAN
2 stops11h 42mUnited Airlines
Sun 14/127:00 p.m.SAN - YUL
2 stops17h 16mUnited Airlines
Deal found 5/11C$ 581
Thu 4/127:30 a.m.YUL - SAN
1 stop17h 14mAmerican Airlines
Sun 7/126:15 a.m.SAN - YUL
1 stop13h 27mAmerican Airlines
Deal found 5/11C$ 601
Best flights from Montreal to San Diego
Discover carefully curated flight deals from Montreal to San Diego that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated 6 November 2025.
Tue 24/22:40 p.m.YUL - SAN
1 stop9h 15mDelta
Wed 25/210:05 p.m.SAN - YUL
1 stop10h 54mDelta
Deal found 5/11C$ 532
Wed 22/44:45 p.m.YUL - SAN
1 stop8h 02mUnited Airlines
Mon 27/48:50 p.m.SAN - YUL
2 stops10h 21mUnited Airlines
Deal found 6/11C$ 553
Tue 13/112:54 p.m.YUL - SAN
1 stop9h 06mDelta
Wed 29/48:50 a.m.SAN - YUL
1 stop11h 44mDelta
Deal found 6/11C$ 532
Tue 24/29:15 a.m.YUL - SAN
2 stops11h 24mUnited Airlines
Wed 25/26:30 a.m.SAN - YUL
2 stops10h 18mUnited Airlines
Deal found 5/11C$ 553
Wed 14/12:45 p.m.YUL - SAN
1 stop11h 02mDelta
Tue 28/49:40 p.m.SAN - YUL
1 stop11h 07mDelta
Deal found 6/11C$ 532
Tue 21/44:55 p.m.YUL - SAN
1 stop7h 49mDelta
Tue 5/59:40 p.m.SAN - YUL
1 stop11h 07mDelta
Deal found 5/11C$ 533
Fri 6/312:30 p.m.YUL - SAN
1 stop13h 18mDelta
Wed 11/39:40 p.m.SAN - YUL
1 stop11h 04mDelta
Deal found 4/11C$ 533
Sat 18/46:00 a.m.YUL - SAN
1 stop11h 08mDelta
Mon 4/58:50 a.m.SAN - YUL
1 stop11h 44mDelta
Deal found 5/11C$ 533
Sat 18/46:00 a.m.YUL - SAN
1 stop11h 08mDelta
Tue 5/58:50 a.m.SAN - YUL
1 stop11h 44mDelta
Deal found 5/11C$ 533
Sat 18/46:00 a.m.YUL - SAN
1 stop11h 08mDelta
Sat 2/58:50 a.m.SAN - YUL
1 stop11h 44mDelta
Deal found 5/11C$ 533
Tue 21/47:00 a.m.YUL - SAN
1 stop9h 01mDelta
Sat 2/58:50 a.m.SAN - YUL
1 stop11h 44mDelta
Deal found 5/11C$ 533
Last-minute flights from Montreal to San Diego
Discover last-minute flight deals from Montreal to San Diego. Data last updated 6 November 2025 and is based on user searches.
Thu 27/117:00 a.m.YUL - SAN
1 stop11h 31mDelta
Thu 11/126:15 a.m.SAN - YUL
1 stop8h 10mDelta
Deal found 5/11C$ 563
Fri 28/114:00 p.m.YUL - SAN
1 stop19h 34mAmerican Airlines
Tue 9/1210:23 p.m.SAN - YUL
1 stop12h 26mAmerican Airlines
Deal found 5/11C$ 576
Tue 2/127:10 a.m.YUL - SAN
2 stops19h 49mDelta
Mon 8/1210:30 p.m.SAN - YUL
1 stop10h 05mDelta
Deal found 5/11C$ 542
Thu 4/127:30 a.m.YUL - SAN
1 stop17h 14mAmerican Airlines
Sun 7/126:15 a.m.SAN - YUL
1 stop13h 27mAmerican Airlines
Deal found 5/11C$ 601
Sat 6/122:59 p.m.YUL - SAN
1 stop9h 19mDelta
Fri 12/1210:00 p.m.SAN - YUL
1 stop11h 00mDelta
Deal found 4/11C$ 533
Sat 6/127:30 a.m.YUL - SAN
1 stop17h 14mAmerican Airlines
Sun 14/126:15 a.m.SAN - YUL
1 stop13h 27mAmerican Airlines
Deal found 5/11C$ 537
Sat 6/124:45 p.m.YUL - SAN
1 stop8h 45mUnited Airlines
Fri 12/125:23 p.m.SAN - YUL
2 stops17h 37mUnited Airlines
Deal found 4/11C$ 554
Sat 6/123:00 p.m.YUL - SAN
2 stops11h 42mUnited Airlines
Sun 14/127:00 p.m.SAN - YUL
2 stops17h 16mUnited Airlines
Deal found 5/11C$ 581
Wed 17/124:45 p.m.YUL - SAN
1 stop8h 45mUnited Airlines
Mon 5/14:45 p.m.SAN - YUL
1 stop18h 15mUnited Airlines
Deal found 5/11C$ 560
One-way flights from Montreal to San Diego
Search for one-way flight options from Montreal to San Diego. Find affordable one-way fares based on user searches. Data last updated 6 November 2025.
Mon 8/126:45 a.m.YUL - SAN
2 stops10h 25mMultiple Airlines
Deal found 4/11C$ 286
Tue 20/112:54 p.m.YUL - SAN
1 stop12h 39mDelta
Deal found 6/11C$ 308
Wed 4/39:00 a.m.YUL - SAN
1 stop11h 24mAir Canada
Deal found 6/11C$ 310
Mon 8/127:00 a.m.YUL - SAN
1 stop15h 43mAmerican Airlines
Deal found 4/11C$ 315
Tue 20/19:15 a.m.YUL - SAN
2 stops12h 19mUnited Airlines
Deal found 6/11C$ 319
Sat 17/14:00 p.m.YUL - SAN
3 stops23h 22mMultiple Airlines
Deal found 5/11C$ 323
Sat 24/17:00 a.m.YUL - SAN
2 stops14h 31mAmerican Airlines
Deal found 5/11C$ 324
Sun 23/114:35 p.m.YUL - SAN
2 stops25h 52mMultiple Airlines
Deal found 6/11C$ 336
Thu 27/117:00 a.m.YUL - SAN
1 stop9h 03mDelta
Deal found 6/11C$ 337
Mon 1/127:30 p.m.YUL - SAN
3 stops40h 10mMultiple Airlines
Deal found 6/11C$ 340
Wed 4/36:45 a.m.YUL - SAN
3 stops27h 20mMultiple Airlines
Deal found 6/11C$ 348
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 6 November 2025.
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 November 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
Tue 24/2
2:40 p.m.-8:55 p.m.
1 stop9h 15m
San Diego
Wed 25/2
10:05 p.m.-11:59 a.m.
1 stop10h 54m
C$ 532
MontrealSan Diego
YUL - SAN
YULSAN
Montreal Pierre Elliott Trudeau Intl
Tue 13/1
12:54 p.m.-7:00 p.m.
1 stop9h 06m
San Diego
Wed 29/4
8:50 a.m.-11:34 p.m.
1 stop11h 44m
C$ 532
MontrealSan Diego
YUL - SAN
YULSAN
Montreal Pierre Elliott Trudeau Intl
Wed 14/1
2:45 p.m.-10:47 p.m.
1 stop11h 02m
San Diego
Tue 28/4
9:40 p.m.-11:47 a.m.
1 stop11h 07m
C$ 532
MontrealSan Diego
YUL - SAN
YULSAN
Montreal Pierre Elliott Trudeau Intl
Tue 21/4
4:55 p.m.-9:44 p.m.
1 stop7h 49m
San Diego
Tue 5/5
9:40 p.m.-11:47 a.m.
1 stop11h 07m
C$ 533
MontrealSan Diego
YUL - SAN
YULSAN
Montreal Pierre Elliott Trudeau Intl
Fri 6/3
12:30 p.m.-10:48 p.m.
1 stop13h 18m
San Diego
Wed 11/3
9:40 p.m.-11:44 a.m.
1 stop11h 04m
C$ 533
MontrealSan Diego
YUL - SAN
YULSAN
Montreal Pierre Elliott Trudeau Intl
Sat 18/4
6:00 a.m.-2:08 p.m.
1 stop11h 08m
San Diego
Mon 4/5
8:50 a.m.-11:34 p.m.
1 stop11h 44m
C$ 533
MontrealSan Diego
YUL - SAN
YULSAN
Montreal Pierre Elliott Trudeau Intl
Sat 18/4
6:00 a.m.-2:08 p.m.
1 stop11h 08m
San Diego
Tue 5/5
8:50 a.m.-11:34 p.m.
1 stop11h 44m
C$ 533
MontrealSan Diego
YUL - SAN
YULSAN
Montreal Pierre Elliott Trudeau Intl
Sat 18/4
6:00 a.m.-2:08 p.m.
1 stop11h 08m
San Diego
Sat 2/5
8:50 a.m.-11:34 p.m.
1 stop11h 44m
C$ 533
MontrealSan Diego
YUL - SAN
YULSAN
Montreal Pierre Elliott Trudeau Intl
Tue 21/4
7:00 a.m.-1:01 p.m.
1 stop9h 01m
San Diego
Sat 2/5
8:50 a.m.-11:34 p.m.
1 stop11h 44m
C$ 533
MontrealSan Diego
YUL - SAN
YULSAN
Montreal Pierre Elliott Trudeau Intl
Wed 22/4
4:45 p.m.-9:47 p.m.
1 stop8h 02m
San Diego
Mon 27/4
8:50 p.m.-10:11 a.m.
2 stops10h 21m
C$ 553
Flights are sorted by cheapest round-trip flights first.
Deals found on 4/11
Showing 1-10 of 22 results
1
2
3
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 31 October 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$ 189). Flying from Montreal to San Diego in September is currently the most expensive (average of C$ 363). 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 November 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.
How much does it cost to fly round-trip from Montreal to San Diego?
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 November 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.
I recently flew with Porter Airlines on Flight PD372 on October 30th, and unfortunately, had a very disappointing experience. At the gate, one of their attendants gave me two boarding passes. I assumed these were for my itinerary from Vancouver to Montreal and back, but one of the boarding passes unexpectedly included a connecting flight to Toronto, which was never part of my booking or invoice. As a result of this error, my checked baggage was mistakenly routed to Toronto. When I contacted Porter’s customer service, I spoke to an agent who apologized on behalf of the attendant (employee number 13209961) and promised to have my luggage flown back to Montreal. However, shortly after, I was told there was nothing they could do except for me to travel to Toronto myself to pick up my bag. This is highly unreasonable and unfair, considering the issue was caused by their staff printing the wrong boarding pass. This entire situation caused me significant inconvenience and stress. I expected Porter to correct the mistake and deliver my luggage as originally planned, but instead, I was left with the burden of fixing an error that was not mine. I even have a photo of the staff badge of the employee who made the promise, yet the company still failed to honor it. I hope Porter Airlines reviews their internal communication and baggage handling procedures to prevent this from happening to other passengers. Customer care and responsibility fell short in this experience, and I am still waiting for a satisfactory resolution.
I recently flew with Porter Airlines on Flight PD372 on October 30th, and unfortunately, had a very disappointing experience. At the gate, one of their attendants gave me two boarding passes. I assumed these were for my itinerary from Vancouver to Montreal and back, but one of the boarding passes unexpectedly included a connecting flight to Toronto, which was never part of my booking or invoice. As a result of this error, my checked baggage was mistakenly routed to Toronto. When I contacted Porter’s customer service, I spoke to an agent who apologized on behalf of the attendant (employee number 13209961) and promised to have my luggage flown back to Montreal. However, shortly after, I was told there was nothing they could do except for me to travel to Toronto myself to pick up my bag. This is highly unreasonable and unfair, considering the issue was caused by their staff printing the wrong boarding pass. This entire situation caused me significant inconvenience and stress. I expected Porter to correct the mistake and deliver my luggage as originally planned, but instead, I was left with the burden of fixing an error that was not mine. I even have a photo of the staff badge of the employee who made the promise, yet the company still failed to honor it. I hope Porter Airlines reviews their internal communication and baggage handling procedures to prevent this from happening to other passengers. Customer care and responsibility fell short in this experience, and I am still waiting for a satisfactory resolution.
I recently flew with Porter Airlines on Flight PD372 on October 30th, and unfortunately, had a very disappointing experience. At the gate, one of their attendants gave me two boarding passes. I assumed these were for my itinerary from Vancouver to Montreal and back, but one of the boarding passes unexpectedly included a connecting flight to Toronto, which was never part of my booking or invoice. As a result of this error, my checked baggage was mistakenly routed to Toronto. When I contacted Porter’s customer service, I spoke to an agent who apologized on behalf of the attendant (employee number 13209961) and promised to have my luggage flown back to Montreal. However, shortly after, I was told there was nothing they could do except for me to travel to Toronto myself to pick up my bag. This is highly unreasonable and unfair, considering the issue was caused by their staff printing the wrong boarding pass. This entire situation caused me significant inconvenience and stress. I expected Porter to correct the mistake and deliver my luggage as originally planned, but instead, I was left with the burden of fixing an error that was not mine. I even have a photo of the staff badge of the employee who made the promise, yet the company still failed to honor it. I hope Porter Airlines reviews their internal communication and baggage handling procedures to prevent this from happening to other passengers. Customer care and responsibility fell short in this experience, and I am still waiting for a satisfactory resolution.
I recently flew with Porter Airlines on Flight PD372 on October 30th, and unfortunately, had a very disappointing experience. At the gate, one of their attendants gave me two boarding passes. I assumed these were for my itinerary from Vancouver to Montreal and back, but one of the boarding passes unexpectedly included a connecting flight to Toronto, which was never part of my booking or invoice. As a result of this error, my checked baggage was mistakenly routed to Toronto. When I contacted Porter’s customer service, I spoke to an agent who apologized on behalf of the attendant (employee number 13209961) and promised to have my luggage flown back to Montreal. However, shortly after, I was told there was nothing they could do except for me to travel to Toronto myself to pick up my bag. This is highly unreasonable and unfair, considering the issue was caused by their staff printing the wrong boarding pass. This entire situation caused me significant inconvenience and stress. I expected Porter to correct the mistake and deliver my luggage as originally planned, but instead, I was left with the burden of fixing an error that was not mine. I even have a photo of the staff badge of the employee who made the promise, yet the company still failed to honor it. I hope Porter Airlines reviews their internal communication and baggage handling procedures to prevent this from happening to other passengers. Customer care and responsibility fell short in this experience, and I am still waiting for a satisfactory resolution.
I recently flew with Porter Airlines on Flight PD372 on October 30th, and unfortunately, had a very disappointing experience. At the gate, one of their attendants gave me two boarding passes. I assumed these were for my itinerary from Vancouver to Montreal and back, but one of the boarding passes unexpectedly included a connecting flight to Toronto, which was never part of my booking or invoice. As a result of this error, my checked baggage was mistakenly routed to Toronto. When I contacted Porter’s customer service, I spoke to an agent who apologized on behalf of the attendant (employee number 13209961) and promised to have my luggage flown back to Montreal. However, shortly after, I was told there was nothing they could do except for me to travel to Toronto myself to pick up my bag. This is highly unreasonable and unfair, considering the issue was caused by their staff printing the wrong boarding pass. This entire situation caused me significant inconvenience and stress. I expected Porter to correct the mistake and deliver my luggage as originally planned, but instead, I was left with the burden of fixing an error that was not mine. I even have a photo of the staff badge of the employee who made the promise, yet the company still failed to honor it. I hope Porter Airlines reviews their internal communication and baggage handling procedures to prevent this from happening to other passengers. Customer care and responsibility fell short in this experience, and I am still waiting for a satisfactory resolution.
I recently flew with Porter Airlines on Flight PD372 on October 30th, and unfortunately, had a very disappointing experience. At the gate, one of their attendants gave me two boarding passes. I assumed these were for my itinerary from Vancouver to Montreal and back, but one of the boarding passes unexpectedly included a connecting flight to Toronto, which was never part of my booking or invoice. As a result of this error, my checked baggage was mistakenly routed to Toronto. When I contacted Porter’s customer service, I spoke to an agent who apologized on behalf of the attendant (employee number 13209961) and promised to have my luggage flown back to Montreal. However, shortly after, I was told there was nothing they could do except for me to travel to Toronto myself to pick up my bag. This is highly unreasonable and unfair, considering the issue was caused by their staff printing the wrong boarding pass. This entire situation caused me significant inconvenience and stress. I expected Porter to correct the mistake and deliver my luggage as originally planned, but instead, I was left with the burden of fixing an error that was not mine. I even have a photo of the staff badge of the employee who made the promise, yet the company still failed to honor it. I hope Porter Airlines reviews their internal communication and baggage handling procedures to prevent this from happening to other passengers. Customer care and responsibility fell short in this experience, and I am still waiting for a satisfactory resolution.
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 9h 15m. 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$ 282, 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 Porter Airlines - these airlines can fly you to your destination from C$ 306 and C$ 357, respectively. American Airlines is currently priced 47% 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 Delta. According to our data, you can fly for as low as C$ 309. Users have also found prices from C$ 310 and C$ 319 on Air Canada and United Airlines, respectively.
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$ 189). Flying from Montreal to San Diego in September is currently the most expensive (average of C$ 363). 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.
Book flights to San Diego if you plan to visit one of these locations
El Cajon
La Mesa
Borrego Springs
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.
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 November 2025.
Browse through other flights departing from Montreal. Flights are based on user searches made on Cheapflights and were last updated on 6 November 2025.
Explore flights to San Diego departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on 6 November 2025.
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 6 November 2025.
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.
100% Free
Cheapflights is completely free to use, so you can start saving the moment you arrive.
Book with Flexibility
Our users can plan ahead with confidence and find flights with no change fees
Travel Smart
Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.
We value your privacy
Cheapflights and its partners wish to use cookies or similar technologies to store and/or access information on and about your device and process personal data such as your IP address, device identifiers etc., in order to improve your experience on the site, to analyze navigation, to offer and measure personalized advertising, and to facilitate sharing on social networks. We also allow the use of third-party cookies (including those from our advertising partners) on our sites.
By clicking 'Accept', you consent to your data being processed by 0 vendors on this web site for the purposes described in this notice. You can review the vendors and their individual processing purposes on the .
To review individual processing purposes and cookie categories, please click ’Select individual purposes’. You can review and update your choices anytime by clicking the ’Privacy Preferences’ link in the page side navigation.