Cheap flights from Montreal to San Diego from C$ 224
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 25/3. Fares are subject to change and may not be available on all flights or dates of travel.
YMQ — SAN
7 Feb — 14 Feb1
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 June, booked 65 days in advance, depart on a Tuesday or Monday and return on a Wednesday
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 8 January 2026.
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 8 January 2026.
Sat 25/77:00 a.m.YUL - SAN
1 stop11h 21mDelta
Wed 19/88:50 a.m.SAN - YUL
1 stop11h 44mDelta
Deal found 7/1C$ 491
Wed 4/27:00 a.m.YUL - SAN
1 stop12h 54mAmerican Airlines
Wed 11/26:15 a.m.SAN - YUL
2 stops13h 29mAmerican Airlines
Deal found 7/1C$ 492
Mon 22/66:45 a.m.YUL - SAN
1 stop9h 35mDelta
Sun 5/78:50 a.m.SAN - YUL
1 stop11h 44mDelta
Deal found 6/1C$ 493
Mon 22/66:45 a.m.YUL - SAN
1 stop9h 35mDelta
Sat 4/78:00 a.m.SAN - YUL
1 stop12h 56mDelta
Deal found 6/1C$ 495
Mon 9/34:45 p.m.YUL - SAN
1 stop9h 14mDelta
Thu 12/310:30 p.m.SAN - YUL
1 stop10h 07mDelta
Deal found 6/1C$ 496
Mon 27/76:45 a.m.YUL - SAN
2 stops33h 35mWestJet
Tue 18/82:05 p.m.SAN - YUL
2 stops31h 35mWestJet
Deal found 7/1C$ 499
Fri 6/39:29 a.m.YUL - SAN
2 stops16h 19mDelta
Sun 15/36:15 a.m.SAN - YUL
1 stop8h 16mDelta
Deal found 6/1C$ 500
Thu 5/312:52 p.m.YUL - SAN
1 stop13h 10mDelta
Sun 15/36:15 a.m.SAN - YUL
2 stops13h 58mDelta
Deal found 6/1C$ 503
Thu 26/210:30 p.m.YUL - SAN
1 stop16h 23mAir Canada
Tue 3/312:40 p.m.SAN - YUL
2 stops14h 59mAir Canada
Deal found 6/1C$ 505
Mon 27/79:30 p.m.YUL - SAN
1 stop17h 10mAir Canada
Sat 1/87:00 a.m.SAN - YUL
Nonstop5h 33mAir Canada
Deal found 7/1C$ 506
Fri 20/29:15 a.m.YUL - SAN
2 stops16h 20mUnited Airlines
Wed 25/26:55 p.m.SAN - YUL
2 stops17h 21mUnited Airlines
Deal found 6/1C$ 507
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 8 January 2026.
Mon 9/34:45 p.m.YUL - SAN
1 stop9h 14mDelta
Thu 12/310:30 p.m.SAN - YUL
1 stop10h 07mDelta
Deal found 6/1C$ 496
Fri 20/29:15 a.m.YUL - SAN
2 stops16h 20mUnited Airlines
Tue 24/26:30 a.m.SAN - YUL
2 stops10h 18mUnited Airlines
Deal found 6/1C$ 507
Sat 7/39:37 a.m.YUL - SAN
2 stops16h 11mDelta
Fri 13/310:10 p.m.SAN - YUL
1 stop10h 49mDelta
Deal found 6/1C$ 500
Sat 7/36:00 a.m.YUL - SAN
2 stops14h 26mUnited Airlines
Sun 15/38:50 p.m.SAN - YUL
2 stops14h 10mUnited Airlines
Deal found 6/1C$ 507
Fri 6/34:45 p.m.YUL - SAN
1 stop9h 17mDelta
Sat 14/310:30 p.m.SAN - YUL
2 stops17h 05mDelta
Deal found 6/1C$ 500
Fri 6/36:00 a.m.YUL - SAN
2 stops12h 00mUnited Airlines
Sat 14/36:15 a.m.SAN - YUL
2 stops12h 27mUnited Airlines
Deal found 6/1C$ 507
Sat 7/39:37 a.m.YUL - SAN
2 stops16h 11mDelta
Sun 15/310:30 p.m.SAN - YUL
1 stop10h 07mDelta
Deal found 6/1C$ 500
Fri 20/29:15 a.m.YUL - SAN
2 stops16h 20mUnited Airlines
Wed 25/26:55 p.m.SAN - YUL
2 stops17h 21mUnited Airlines
Deal found 6/1C$ 507
Fri 6/39:29 a.m.YUL - SAN
2 stops16h 19mDelta
Sun 15/36:15 a.m.SAN - YUL
1 stop8h 16mDelta
Deal found 6/1C$ 500
Fri 20/29:15 a.m.YUL - SAN
2 stops16h 20mUnited Airlines
Fri 27/26:55 p.m.SAN - YUL
2 stops16h 05mUnited Airlines
Deal found 6/1C$ 507
Fri 6/36:00 a.m.YUL - SAN
2 stops12h 00mUnited Airlines
Sun 15/38:50 p.m.SAN - YUL
2 stops14h 10mUnited Airlines
Deal found 6/1C$ 507
Thu 5/33:00 p.m.YUL - SAN
2 stops11h 40mUnited Airlines
Sat 14/36:15 a.m.SAN - YUL
2 stops12h 27mUnited Airlines
Deal found 6/1C$ 507
Direct flights from Montreal to San Diego
Explore direct flight options from Montreal to San Diego based on user searches, and compare prices and availability for your desired travel dates. Data last updated 8 January 2026.
Fri 26/65:45 p.m.YUL - SAN
Nonstop5h 54mAir Canada
Sun 28/67:00 a.m.SAN - YUL
Nonstop5h 33mAir Canada
Deal found 7/1C$ 518
Thu 25/65:45 p.m.YUL - SAN
Nonstop5h 54mAir Canada
Mon 6/77:00 a.m.SAN - YUL
Nonstop5h 33mAir Canada
Deal found 6/1C$ 542
Thu 25/65:45 p.m.YUL - SAN
Nonstop5h 54mAir Canada
Fri 3/77:00 a.m.SAN - YUL
Nonstop5h 33mAir Canada
Deal found 6/1C$ 665
Sun 28/65:45 p.m.YUL - SAN
Nonstop5h 54mAir Canada
Tue 7/77:00 a.m.SAN - YUL
Nonstop5h 33mAir Canada
Deal found 6/1C$ 746
Sun 28/65:45 p.m.YUL - SAN
Nonstop5h 54mAir Canada
Wed 8/77:00 a.m.SAN - YUL
Nonstop5h 33mAir Canada
Deal found 6/1C$ 869
Mon 22/65:45 p.m.YUL - SAN
Nonstop5h 54mAir Canada
Wed 24/67:00 a.m.SAN - YUL
Nonstop5h 33mAir Canada
Deal found 8/1C$ 880
Fri 19/65:45 p.m.YUL - SAN
Nonstop5h 54mAir Canada
Tue 23/67:00 a.m.SAN - YUL
Nonstop5h 33mAir Canada
Deal found 8/1C$ 1,121
Last-minute flights from Montreal to San Diego
Discover last-minute flight deals from Montreal to San Diego. Data last updated 8 January 2026 and is based on user searches.
Mon 12/112:54 p.m.YUL - SAN
1 stop9h 04mDelta
Mon 19/110:30 p.m.SAN - YUL
1 stop10h 15mDelta
Deal found 5/1C$ 511
Tue 13/17:00 a.m.YUL - SAN
2 stops14h 36mUnited Airlines
Tue 20/17:52 p.m.SAN - YUL
2 stops14h 36mUnited Airlines
Deal found 6/1C$ 510
Wed 14/12:13 p.m.YUL - SAN
1 stop9h 34mUnited Airlines
Tue 28/410:40 p.m.SAN - YUL
1 stop9h 00mUnited Airlines
Deal found 7/1C$ 509
Wed 14/17:00 a.m.YUL - SAN
2 stops13h 28mUnited Airlines
Sat 2/57:40 p.m.SAN - YUL
2 stops11h 41mUnited Airlines
Deal found 7/1C$ 517
Wed 4/27:00 a.m.YUL - SAN
1 stop12h 54mAmerican Airlines
Wed 11/26:15 a.m.SAN - YUL
2 stops13h 29mAmerican Airlines
Deal found 7/1C$ 492
Fri 20/29:15 a.m.YUL - SAN
2 stops16h 20mUnited Airlines
Tue 24/26:30 a.m.SAN - YUL
2 stops10h 18mUnited Airlines
Deal found 6/1C$ 507
Wed 25/210:30 p.m.YUL - SAN
1 stop16h 23mAir Canada
Thu 5/312:40 p.m.SAN - YUL
1 stop16h 42mAir Canada
Deal found 8/1C$ 514
Thu 26/210:30 p.m.YUL - SAN
1 stop16h 23mAir Canada
Tue 3/312:40 p.m.SAN - YUL
2 stops14h 59mAir Canada
Deal found 6/1C$ 505
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 8 January 2026.
Wed 25/39:00 a.m.YUL - SAN
1 stop11h 24mAir Canada
Deal found 7/1C$ 224
Thu 22/12:30 p.m.YUL - SAN
2 stops21h 56mMultiple Airlines
Deal found 7/1C$ 229
Thu 26/36:00 a.m.YUL - SAN
1 stop8h 53mAir Canada
Deal found 6/1C$ 235
Sat 24/16:00 a.m.YUL - SAN
1 stop8h 53mAir Canada
Deal found 6/1C$ 238
Wed 25/36:00 a.m.YUL - SAN
1 stop16h 00mUnited Airlines
Deal found 5/1C$ 241
Mon 9/23:00 p.m.YUL - SAN
2 stops11h 42mUnited Airlines
Deal found 6/1C$ 243
Mon 23/23:00 p.m.YUL - SAN
2 stops22h 24mUnited Airlines
Deal found 5/1C$ 249
Mon 9/27:30 a.m.YUL - SAN
1 stop18h 28mAmerican Airlines
Deal found 6/1C$ 250
Sat 24/17:00 a.m.YUL - SAN
2 stops14h 31mAmerican Airlines
Deal found 6/1C$ 254
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 8 January 2026.
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 9/3
4:45 p.m.-10:59 p.m.
1 stop9h 14m
San Diego
Thu 12/3
10:30 p.m.-11:37 a.m.
1 stop10h 07m
C$ 496
MontrealSan Diego
YUL - SAN
YULSAN
Montreal Pierre Elliott Trudeau Intl
Sat 7/3
9:37 a.m.-10:48 p.m.
2 stops16h 11m
San Diego
Fri 13/3
10:10 p.m.-11:59 a.m.
1 stop10h 49m
C$ 500
MontrealSan Diego
YUL - SAN
YULSAN
Montreal Pierre Elliott Trudeau Intl
Fri 6/3
4:45 p.m.-11:02 p.m.
1 stop9h 17m
San Diego
Sat 14/3
10:30 p.m.-6:35 p.m.
2 stops17h 05m
C$ 500
MontrealSan Diego
YUL - SAN
YULSAN
Montreal Pierre Elliott Trudeau Intl
Sat 7/3
9:37 a.m.-10:48 p.m.
2 stops16h 11m
San Diego
Sun 15/3
10:30 p.m.-11:37 a.m.
1 stop10h 07m
C$ 500
MontrealSan Diego
YUL - SAN
YULSAN
Montreal Pierre Elliott Trudeau Intl
Fri 6/3
9:29 a.m.-10:48 p.m.
2 stops16h 19m
San Diego
Sun 15/3
6:15 a.m.-5:31 p.m.
1 stop8h 16m
C$ 500
MontrealSan Diego
YUL - SAN
YULSAN
Montreal Pierre Elliott Trudeau Intl
Fri 20/2
9:15 a.m.-10:35 p.m.
2 stops16h 20m
San Diego
Tue 24/2
6:30 a.m.-7:48 p.m.
2 stops10h 18m
C$ 507
MontrealSan Diego
YUL - SAN
YULSAN
Montreal Pierre Elliott Trudeau Intl
Sat 7/3
6:00 a.m.-5:26 p.m.
2 stops14h 26m
San Diego
Sun 15/3
8:50 p.m.-2:00 p.m.
2 stops14h 10m
C$ 507
MontrealSan Diego
YUL - SAN
YULSAN
Montreal Pierre Elliott Trudeau Intl
Fri 6/3
6:00 a.m.-3:00 p.m.
2 stops12h 00m
San Diego
Sat 14/3
6:15 a.m.-9:42 p.m.
2 stops12h 27m
C$ 507
MontrealSan Diego
YUL - SAN
YULSAN
Montreal Pierre Elliott Trudeau Intl
Fri 20/2
9:15 a.m.-10:35 p.m.
2 stops16h 20m
San Diego
Wed 25/2
6:55 p.m.-3:16 p.m.
2 stops17h 21m
C$ 507
MontrealSan Diego
YUL - SAN
YULSAN
Montreal Pierre Elliott Trudeau Intl
Fri 20/2
9:15 a.m.-10:35 p.m.
2 stops16h 20m
San Diego
Fri 27/2
6:55 p.m.-2:00 p.m.
2 stops16h 05m
C$ 507
Flights are sorted by cheapest round-trip flights first.
Deals found on 8/1
Showing 1-10 of 20 results
1
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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 2 January 2026.
Booking 65 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 December is currently the most expensive (average of C$ 423). 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.
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 49% 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: 8h 05m.
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 04m.
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 8 January 2026.
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.
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 9h 14m. 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 United Airlines. According to our data, you can fly for as low as C$ 170. Users have also found prices from C$ 221 and C$ 235 on Air Canada 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$ 551, our data shows the cheapest flight currently is C$ 407. When looking at the most popular route, (Montreal Pierre Elliott Trudeau Intl - San Diego), you can expect to pay C$ 393 for that flight.
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 December is currently the most expensive (average of C$ 423). 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
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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 8 January 2026.
Explore flights to San Diego departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on 8 January 2026.
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 8 January 2026.
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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