Cheap Flights from Montreal to San Diego

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Travellers and bags, 1 Adult, Economy

Compare Montreal to San Diego flight deals

Find the cheapest month or even day of the year to fly to San Diego

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Flight deals from Montreal to San Diego

Looking for a cheap last-minute deal or the best return flight from Montreal to San Diego? If you want to travel next month, return fares start from $617. Find the lowest prices on one-way and return tickets right here.

San Diego.$617 per passenger.Departing Sat, 5 Sep, returning Sat, 12 Sep.Return flight with WestJet.Outbound indirect flight with WestJet, departs from Montreal Pierre Elliott Trudeau on Sat, 5 Sep, arriving in San Diego International.Inbound indirect flight with WestJet, departs from San Diego International on Sat, 12 Sep, arriving in Montreal Pierre Elliott Trudeau.Price includes taxes and charges.From $617, select.

San Diego.$645 per passenger.Departing Tue, 25 Aug, returning Tue, 1 Sep.Return flight with WestJet.Outbound indirect flight with WestJet, departs from Montreal Pierre Elliott Trudeau on Tue, 25 Aug, arriving in San Diego International.Inbound indirect flight with WestJet, departs from San Diego International on Tue, 1 Sep, arriving in Montreal Pierre Elliott Trudeau.Price includes taxes and charges.From $645, select.

San Diego.$664 per passenger.Departing Fri, 11 Sep, returning Sun, 13 Sep.Return flight with Air Canada.Outbound direct flight with Air Canada departs from Montreal Pierre Elliott Trudeau on Fri, 11 Sep, arriving in San Diego International.Inbound direct flight with Air Canada departs from San Diego International on Sun, 13 Sep, arriving in Montreal Pierre Elliott Trudeau.Price includes taxes and charges.From $664, select.

San Diego.$669 per passenger.Departing Tue, 27 Oct, returning Fri, 6 Nov.Return flight with WestJet.Outbound indirect flight with WestJet, departs from Montreal Pierre Elliott Trudeau on Tue, 27 Oct, arriving in San Diego International.Inbound indirect flight with WestJet, departs from San Diego International on Fri, 6 Nov, arriving in Montreal Pierre Elliott Trudeau.Price includes taxes and charges.From $669, select.

San Diego.$669 per passenger.Departing Thu, 19 Nov, returning Sun, 22 Nov.Return flight with WestJet.Outbound indirect flight with WestJet, departs from Montreal Pierre Elliott Trudeau on Thu, 19 Nov, arriving in San Diego International.Inbound indirect flight with WestJet, departs from San Diego International on Sun, 22 Nov, arriving in Montreal Pierre Elliott Trudeau.Price includes taxes and charges.From $669, select.

San Diego.$670 per passenger.Departing Fri, 27 Nov, returning Fri, 4 Dec.Return flight with WestJet.Outbound indirect flight with WestJet, departs from Montreal Pierre Elliott Trudeau on Fri, 27 Nov, arriving in San Diego International.Inbound indirect flight with WestJet, departs from San Diego International on Fri, 4 Dec, arriving in Montreal Pierre Elliott Trudeau.Price includes taxes and charges.From $670, select.

San Diego.$670 per passenger.Departing Fri, 4 Dec, returning Fri, 11 Dec.Return flight with WestJet.Outbound indirect flight with WestJet, departs from Montreal Pierre Elliott Trudeau on Fri, 4 Dec, arriving in San Diego International.Inbound indirect flight with WestJet, departs from San Diego International on Fri, 11 Dec, arriving in Montreal Pierre Elliott Trudeau.Price includes taxes and charges.From $670, select.

San Diego.$670 per passenger.Departing Fri, 9 Oct, returning Wed, 14 Oct.Return flight with Air Canada.Outbound indirect flight with Air Canada, departs from Montreal Pierre Elliott Trudeau on Fri, 9 Oct, arriving in San Diego International.Inbound indirect flight with Air Canada, departs from San Diego International on Wed, 14 Oct, arriving in Montreal Pierre Elliott Trudeau.Price includes taxes and charges.From $670, select.

San Diego.$672 per passenger.Departing Tue, 29 Sep, returning Tue, 6 Oct.Return flight with WestJet.Outbound indirect flight with WestJet, departs from Montreal Pierre Elliott Trudeau on Tue, 29 Sep, arriving in San Diego International.Inbound indirect flight with WestJet, departs from San Diego International on Tue, 6 Oct, arriving in Montreal Pierre Elliott Trudeau.Price includes taxes and charges.From $672, select.

San Diego.$697 per passenger.Departing Mon, 24 Aug, returning Mon, 31 Aug.Return flight with WestJet.Outbound indirect flight with WestJet, departs from Montreal Pierre Elliott Trudeau on Mon, 24 Aug, arriving in San Diego International.Inbound indirect flight with WestJet, departs from San Diego International on Mon, 31 Aug, arriving in Montreal Pierre Elliott Trudeau.Price includes taxes and charges.From $697, select.

San Diego.$701 per passenger.Departing Thu, 1 Oct, returning Mon, 5 Oct.Return flight with Air Canada.Outbound direct flight with Air Canada departs from Montreal Pierre Elliott Trudeau on Thu, 1 Oct, arriving in San Diego International.Inbound direct flight with Air Canada departs from San Diego International on Mon, 5 Oct, arriving in Montreal Pierre Elliott Trudeau.Price includes taxes and charges.From $701, select.

San Diego.$718 per passenger.Departing Mon, 31 Aug, returning Fri, 11 Sep.Return flight with Air Canada.Outbound direct flight with Air Canada departs from Montreal Pierre Elliott Trudeau on Mon, 31 Aug, arriving in San Diego International.Inbound direct flight with Air Canada departs from San Diego International on Fri, 11 Sep, arriving in Montreal Pierre Elliott Trudeau.Price includes taxes and charges.From $718, select.

San Diego.$751 per passenger.Departing Wed, 6 Jan, returning Wed, 13 Jan.Return flight with Delta.Outbound indirect flight with Delta, departs from Montreal Pierre Elliott Trudeau on Wed, 6 Jan, arriving in San Diego International.Inbound indirect flight with Delta, departs from San Diego International on Wed, 13 Jan, arriving in Montreal Pierre Elliott Trudeau.Price includes taxes and charges.From $751, select.

San Diego.$752 per passenger.Departing Sat, 22 Aug, returning Fri, 28 Aug.Return flight with Air Canada.Outbound direct flight with Air Canada departs from Montreal Pierre Elliott Trudeau on Sat, 22 Aug, arriving in San Diego International.Inbound direct flight with Air Canada departs from San Diego International on Fri, 28 Aug, arriving in Montreal Pierre Elliott Trudeau.Price includes taxes and charges.From $752, select.

San Diego.$794 per passenger.Departing Fri, 25 Sep, returning Fri, 2 Oct.Return flight with Air Canada.Outbound direct flight with Air Canada departs from Montreal Pierre Elliott Trudeau on Fri, 25 Sep, arriving in San Diego International.Inbound direct flight with Air Canada departs from San Diego International on Fri, 2 Oct, arriving in Montreal Pierre Elliott Trudeau.Price includes taxes and charges.From $794, select.

San Diego.$795 per passenger.Departing Sat, 20 Feb, returning Sat, 27 Feb.Return flight with Delta.Outbound indirect flight with Delta, departs from Montreal Pierre Elliott Trudeau on Sat, 20 Feb, arriving in San Diego International.Inbound indirect flight with Delta, departs from San Diego International on Sat, 27 Feb, arriving in Montreal Pierre Elliott Trudeau.Price includes taxes and charges.From $795, select.

Find the cheapest month to fly from Montreal to San Diego

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Montreal to San Diego flights are currently cheapest in September.

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Direct flights from Montreal to San Diego

Alternative Montreal to San Diego routes

Looking for the cheapest, fastest or easiest route from Montreal to San Diego? You could fly into the following airports instead.

San Diego International

4km from central San Diego

ClosestCheapest

from $617

Search flights

McClellan-Palomar

48km from central San Diego

from $1,511

Search flights

Montreal to San Diego: Flight information

The things to know before you go.

Cheapest flight found	$617
Cheapest month to fly	September
Average flight time	5 hrs, 54 mins
Most popular airline	Air Canada
Average flights per week	76

Finding cheap flights from Montreal to San Diego: Frequently asked questions

How many airports are there in San Diego?

There are 2 airports in San Diego: San Diego International and McClellan-Palomar.

How much are return flights from Montreal to San Diego?

The best price we found for a return flight from Montreal to San Diego is $617. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.

How long does it take to fly from Montreal to San Diego?

5 hours and 54 minutes is the average flight time from Montreal to San Diego.

Which airlines fly direct from Montreal to San Diego?

Air Canada, Air Canada Rouge and United fly direct from Montreal to San Diego.

How many flights are there a week from Montreal to San Diego?

As of August 2026, there are 76 flights per week flying from Montreal to San Diego.

When is the cheapest time to fly from Montreal to San Diego?

The cheapest month to fly from Montreal to San Diego is usually September.

Which is the cheapest airport to fly into in San Diego?

If you're flying from Montreal, the cheapest airport near San Diego is San Diego International – which is 4.1 km away from the centre of San Diego. We've found flights into this airport from $617.

Which upcoming date is cheapest to fly from Montreal to San Diego on?

After crunching the numbers on our flight calendar, we found that it is currently cheapest to fly from Montreal to San Diego on Saturday, 5 September 2026.

Can I get a direct flight from Montreal to San Diego?

Yes – the average flight time is 5 hours and 54 minutes.

How can I get the best flight deal from Montreal to San Diego?

We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to San Diego but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.

When is the best time to book flights to San Diego?

We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to San Diego is around 40 days in advance, so don’t leave your flight to the last minute.

What’s the weather like in San Diego?

In August, the average temperature is usually around 23°C. August is typically the warmest month in San Diego, when it usually averages around 28°C. You can expect the least rain in June. The coldest month is December, with temperatures averaging 10°C. The rainiest month is February.

Which is the cheapest airline to fly from Montreal to San Diego with?

The cheapest airline that flies to San Diego is WestJet. And the cheapest airline that flies to McClellan-Palomar Airport is Air Canada.

Flying from Montreal to San Diego: what you need to know

Planning your trip begins with working out where you'll fly out of in Montreal. Montreal Pierre Elliott Trudeau Airport (YUL) is the city's main base, so explore your options for reserving a flight from Montreal to San Diego departing from here.
Hop off the plane at San Diego's primary gateway, San Diego International Airport (SAN).
Take a direct Montreal to San Diego flight and you'll be flying for an average of 5 hours 55 minutes.
San Diego's timezone is UTC-8, which makes San Diego three hours behind Montreal.
With three weekly flights between the two airports, Montreal Pierre Elliott Trudeau Airport (YUL) to San Diego International Airport (SAN) is the busiest route. Hop on the first flight from Montreal to San Diego with Air Canada at 16:45. If you prefer to get more out of your day before flying, the last flight from YUL to SAN is with Air Canada at 16:50.
Leave plenty of time to make your Montreal to San Diego flight. As a general rule, turn up two hours before international departures and an hour ahead for domestic flights.
Flying during a popular month such as July? Major public holidays and other popular seasons can lead to longer queues at security. Play it safe and get there up to four hours ahead of an international flight and two hours before a domestic departure.

How to find the cheapest flights from Montreal to San Diego

The lowest price we've seen for a one-way ticket from Montreal to San Diego is $326. For a return flight on this route, the best price is $617. Depending on the availability and when you book, these fares could change.
To snag cheap Montreal to San Diego flights, reserve your trip one month before your planned departure.
June is the best month for scoring an amazing deal on a plane ticket from Montreal to San Diego. If you'd like to travel at a different time of year, the 'Whole month' tool will give you the lowest prices across every month.
Locking in a cheap flight from Montreal to San Diego is a piece of cake with Price Alerts. All you need to do is create one of these automatic alerts and we'll notify you as soon as there's a better deal.
Tailor your trip using filters. Choose your arrival and departure times, total journey duration and airlines. You can also sort the results by 'Fastest,' 'Cheapest' or 'Best' Montreal to San Diego flights.

Flying from Montreal

Montreal Pierre Elliott Trudeau Airport (YUL)

Jet off from Montreal Pierre Elliott Trudeau Airport (YUL) on a nonstop flight from Montreal to San Diego. From YUL, you can land directly at San Diego International Airport (SAN).
Air Canada is a well-known carrier that offers direct Montreal to San Diego plane tickets from YUL.
YUL is around 16 kilometres from central Montreal. If you're ride-sharing, catching a taxi or driving from the centre, it'll take you 25 minutes or so to get there, depending on the traffic. If you're planning to take public transport, expect the travel time to be around 45 minutes.
Want a stress-free start to your trip? Stay near Montreal Pierre Elliott Trudeau Airport. Whether you have an early flight from Montreal to San Diego or want to avoid feeling rushed, these hotels are perfect:
67% of flights taking off from Montreal Pierre Elliott Trudeau Airport land at their destination on schedule.
YUL is located at 975 Romeo Vachon Street North.

Arriving in San Diego

San Diego International Airport (SAN)

San Diego International Airport (SAN) is approximately 5 kilometres from the centre of San Diego. If you're catching a taxi or a ride-share, the drive will take around 15 minutes.
Getting there on public transport will take you around 25 minutes.
If you're arriving on a late flight from Montreal to San Diego, few things beat the convenience of staying close to the terminal. Grab your bags from the carousel and then be showered and resting soon after at one of these hotels near SAN:
Get on the fast track to adventure by picking up a San Diego International Airport rental car. Grab a set of wheels from Thrifty, Dollar or Budget to explore San Diego and beyond.
Reserving your ride from San Diego International Airport about two weeks in advance can help you get the best possible rate.
SAN is situated at N Harbour Dr.

McClellan-Palomar Airport (CLD)

Central San Diego is approximately 48 kilometres from McClellan-Palomar Airport (CLD). As soon as your flight from Montreal to San Diego has touched down and you've made your way out of the airport, the drive should be around 35 minutes.
Public transport will get you there in around 1 hour 30 minutes.
After your flight from Montreal to San Diego, unwind at a hotel near CLD. These are some great options that'll help you get into relaxation mode:
The quickest way to get to where you're going is with a McClellan-Palomar Airport rental car. Pick up your wheels from Budget, Hertz or Avis and be off and running.
In general, the sooner you book, the better the prices and selection of vehicles. Lock in your ride from CLD as soon as you know your dates.

Best time to go to San Diego

March is the quietest month for flights from Montreal to San Diego, while August is the most popular. Work out the ideal time to visit San Diego based on whether you want a lively atmosphere or a more laid-back vibe.
Lock in a Montreal to San Diego ticket departing in August if you want to experience the city during its warmest month. Expect temperatures in San Diego to range from 16ºC to 27ºC.
For cooler conditions, search for a cheap flight from Montreal to San Diego in February when temperatures average between 8ºC and 22ºC.

More about San Diego

When it comes to looking for somewhere to lay your head, you'll find the most popular stays in San Diego right here. Check out these options after locking in your flight from Montreal to San Diego:
There are so many things to explore in this city it can be difficult to know where to start. San Diego Zoo, Balboa Park and USS Midway Museum are top sights which should feature on any good San Diego itinerary.

Explore more of the United States

Los Angeles is just one of the many places in the United States waiting to be explored once you've seen the sights of San Diego. Around 177 kilometres to the northwest, check out popular attractions including Hollywood Sign, Universal Studios Hollywood and Hollywood Bowl.
Phoenix is another essential stop in the United States and is around 483 kilometres east of San Diego. No trip is complete without visiting Camelback Mountain, Yayoi Kusama Fireflies Infinity Mirror Room and Heard Museum.