Cheap flights from Montreal to San Francisco from C$ 273
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 9/7. Fares are subject to change and may not be available on all flights or dates of travel.
Cheapflights Tip: The best prices from Montreal to San Francisco are usually found in February or March, booked 89 days in advance, depart on a Thursday or Friday and return on a Friday
Cheap flight deals from Montreal to San Francisco
Discover tips and strategies to find the most affordable flight options for your journey from Montreal (YMQ) to San Francisco (SFO). 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 3 julio 2025.
Round-trip from | C$ 447 |
---|---|
One-way from | C$ 273 |
Popular in | December |
Cheapest in | February |
Average price | C$ 657 |
Good round-trip deal | C$ 1,005 or less |
Good one-way deal | C$ 639 or less |
Find flight deals from Montreal to San Francisco
Cheapest flights from Montreal to San FranciscoExplore the most affordable flight options available from Montreal to San Francisco. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 3 julio 2025.
Explore the most affordable flight options available from Montreal to San Francisco. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 3 julio 2025.
Cheapflights Fare Finder
Customize your flight search to find flights from Montreal to San Francisco 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 3 julio 2025.
Use the filters below to find and compare flights from Montreal to San Francisco that are best for you.
Fly from
Fly to
Route
Depart
Return
Price
MontrealSan Francisco
YUL - SFO
YULSFO
Montreal Pierre Elliott Trudeau Intl
mié. 20/8
5:30 p.m.-11:56 a.m.
1 stop21h 26m
San Francisco
mié. 27/8
12:50 p.m.-12:43 a.m.
1 stop8h 53m
MontrealSan Francisco
YUL - SFO
YULSFO
Montreal Pierre Elliott Trudeau Intl
lun. 25/8
8:05 a.m.-11:15 a.m.
Nonstop6h 10m
San Francisco
mié. 3/9
11:40 a.m.-8:05 p.m.
Nonstop5h 25m
MontrealSan Francisco
YUL - SFO
YULSFO
Montreal Pierre Elliott Trudeau Intl
lun. 18/8
6:45 a.m.-12:23 p.m.
1 stop8h 38m
San Francisco
dom. 31/8
1:25 p.m.-12:37 a.m.
1 stop8h 12m
MontrealSan Francisco
YUL - SFO
YULSFO
Montreal Pierre Elliott Trudeau Intl
mié. 6/8
6:30 p.m.-9:42 p.m.
Nonstop6h 12m
San Francisco
mar. 12/8
11:47 p.m.-8:16 a.m.
Nonstop5h 29m
MontrealSan Francisco
YUL - SFO
YULSFO
Montreal Pierre Elliott Trudeau Intl
mié. 17/12
3:45 p.m.-9:03 a.m.
2 stops20h 18m
San Francisco
dom. 18/1
9:34 a.m.-10:45 p.m.
1 stop10h 11m
MontrealSan Francisco
YUL - SFO
YULSFO
Montreal Pierre Elliott Trudeau Intl
lun. 25/8
6:30 p.m.-9:40 p.m.
Nonstop6h 10m
San Francisco
mié. 3/9
8:30 a.m.-4:58 p.m.
Nonstop5h 28m
MontrealSan Francisco
YUL - SFO
YULSFO
Montreal Pierre Elliott Trudeau Intl
lun. 25/8
6:20 a.m.-1:30 p.m.
1 stop10h 10m
San Francisco
mié. 3/9
12:07 p.m.-11:16 p.m.
1 stop8h 09m
MontrealSan Francisco
YUL - SFO
YULSFO
Montreal Pierre Elliott Trudeau Intl
mié. 9/7
6:45 a.m.-12:23 p.m.
1 stop8h 38m
MontrealSan Francisco
YUL - SFO
YULSFO
Montreal Pierre Elliott Trudeau Intl
sáb. 16/8
6:20 a.m.-1:28 p.m.
1 stop10h 08m
MontrealSan Francisco
YUL - SFO
YULSFO
Montreal Pierre Elliott Trudeau Intl
jue. 17/7
6:45 a.m.-7:39 p.m.
3 stops15h 54m
Best time to book a flight from Montreal to San Francisco
Have a flexible travel schedule? Discover the best time to fly to San Francisco from Montreal with our price prediction graph.
Cheapflights Insights
Everything you need to know about your flight from Montreal to San Francisco
How far ahead should I book a flight from Montreal to San Francisco?
Use this chart to determine the optimal time to book a round-trip flight from Montreal to San Francisco. Price data was last updated on 27 June 2025.
To ensure you get the cheapest price possible for a flight from Montreal to San Francisco, you should look to book at least 89 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.
What is the cheapest month to book a flight from Montreal to San Francisco?
Currently, January is the cheapest month in which you can book a flight from Montreal to San Francisco (average of C$ 276). Flying from Montreal to San Francisco in December is currently the most expensive (average of C$ 368). 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 SFO?
Find hourly flight availability from Montreal to San Francisco. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 3 julio 2025.
A simple way to save on the total cost of your ticket is to fly from Montreal to San Francisco in the evening. If you’re flexible enough to do this you can expect to save up to 57% on your trip compared to booking a flight in the afternoon.
What is the cheapest day to fly from Montreal to San Francisco?
Use this chart to determine the cheapest time to fly round-trip from Montreal to San Francisco. Price data was last updated on 29 June 2025.
Travelers seeking maximum savings on their Montreal to San Francisco flight should consider departing on Friday evenings when fares are most often at their lowest. Monday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.
Weekly flight availability from Montreal to San Francisco
Explore weekly flight availability from Montreal to San Francisco. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated 3 julio 2025.
The most flights from YMQ to SFO are scheduled on a Wednesday (9 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (4 on average).
Reviews of airlines servicing San Francisco
Get insights into the airlines that provide service to San Francisco. 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 Francisco. Reviews last updated 3 julio 2025.
Read through reviews of airlines operating flights from Montreal to San Francisco, such as Porter Airlines,Delta, andUnited Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Entertainment
Crew
Food
Comfort
Boarding
Overall
Reviews
Mary,Jun 2025
FLL - YYZ
Entertainment
Crew
Food
Comfort
Boarding
Overall
Reviews
Mary,Jun 2025
FLL - YYZ
Entertainment
Crew
Food
Comfort
Boarding
Overall
Reviews
Mary,Jun 2025
FLL - YYZ
Entertainment
Crew
Food
Comfort
Boarding
Overall
Reviews
Mary,Jun 2025
FLL - YYZ
Entertainment
Crew
Food
Comfort
Boarding
Overall
Reviews
Mary,Jun 2025
FLL - YYZ
Entertainment
Crew
Food
Comfort
Boarding
Overall
Reviews
Mary,Jun 2025
FLL - YYZ
Related info for your journey
Find useful and relevant information for your journey from Montreal to San Francisco. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
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Fly from Montreal to San Francisco on these airlines
Choose from the following airlines for your flight from Montreal to San Francisco. Flights are based on user searches made on Cheapflights and were last updated on 3 julio 2025.
Top 6 airlines flying from Montreal to San Francisco
Discover the top 6 airlines that operate flights from Montreal to San Francisco. 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 3 julio 2025.
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 Francisco?
Deals for Montreal to San Francisco flights are sourced from 900+ travel sites when you use Cheapflights. When all flight results come back, Cheapflights lets you sort and filter flights using different criteria to choose better, like price, airport, cabin class, and plenty of other options.
Why should you use Cheapflights to find cheap flight tickets from Montreal to San Francisco?
Millions of users choose and trust Cheapflights to book the best flight deals from Montreal to San Francisco for free. We help you search and compare prices from hundreds of airlines for the right flight just for you.
Can Cheapflights find flights from Montreal to San Francisco with no change fees?
Cheapflights does show flights with no change fees to all users. To see these options for flights from Montreal to San Francisco, users can toggle the no change fees filter when performing a flight search.
Can Cheapflights notify me if prices for flights from Montreal to San Francisco become cheaper?
Not ready to book yet? You can track prices for flights from Montreal to San Francisco on Cheapflights with our Price Alert feature and get notified when better prices are available.