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Cheap flights from Montreal to Sonoma from C$ 260

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 25/8. Fares are subject to change and may not be available on all flights or dates of travel.
YMQ — SFO
6 Aug — 13 Aug1
1 adult

Cheapflights Tip: The best prices from Montreal to Sonoma 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 Sonoma

Keep the following information in mind while searching for Montreal to Sonoma flight deals. Data was last updated 1 August 2025.

Round-trip from

C$ 423

One-way from

C$ 260

Popular in

December

Cheapest in

February

Average price

C$ 596
19/9-21/9
  • 19/9-21/9
  • 2 total stops
  • 46h 12m total
  • Montreal to Sonoma
Search Deals
American Airlines
  • American Airlines
  • 25/8
  • 1 total stop
  • 10h 13m total
  • Montreal to Sonoma
Search Deals
Highest demand for flights based on searches. 7% potential increase in price (C$ 65 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (C$ 25 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in August 2025
Search Deals

Find flight deals from Montreal to Sonoma

Cheapest flights from Montreal to Sonoma
Explore the most affordable flight options available from Montreal to Sonoma. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 1 August 2025.

Fri 19/98:10 a.m.YUL - SFO
1 stop28h 20mMultiple Airlines
Sun 21/910:15 a.m.SFO - YUL
1 stop17h 52mMultiple Airlines
Deal found 31/7C$ 423
Fri 22/87:30 a.m.YUL - SFO
1 stop11h 03mAir Canada
Sun 31/88:20 a.m.SFO - YUL
Nonstop5h 25mAir Canada
Deal found 31/7C$ 429
Fri 22/86:30 p.m.YUL - SFO
Nonstop6h 10mUnited Airlines
Sun 31/811:45 p.m.SFO - YUL
Nonstop5h 31mUnited Airlines
Deal found 31/7C$ 458
Fri 22/84:05 p.m.YUL - SFO
1 stop10h 13mAmerican Airlines
Sun 31/86:10 a.m.SFO - YUL
1 stop7h 32mAmerican Airlines
Deal found 31/7C$ 468
Wed 27/86:45 a.m.YUL - SFO
2 stops13h 30mWestJet
Wed 3/97:30 a.m.SFO - YUL
2 stops13h 57mWestJet
Deal found 30/7C$ 493

Cheapflights Fare Finder

 
Customize your flight search to find flights from Montreal to Sonoma 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 1 August 2025.
Use the filters below to find and compare flights from Montreal to Sonoma that are best for you.

Fly from

Montreal

Fly to

Sonoma

Route

Depart

Return

Price

MontrealSan Francisco

YUL - SFO

YULSFO

Montreal Pierre Elliott Trudeau Intl

Fri 19/9

8:10 a.m.-9:30 a.m.

1 stop28h 20m

San Francisco

Sun 21/9

10:15 a.m.-7:07 a.m.

1 stop17h 52m

C$ 423

MontrealSan Francisco

YUL - SFO

YULSFO

Montreal Pierre Elliott Trudeau Intl

Fri 22/8

7:30 a.m.-3:33 p.m.

1 stop11h 03m

San Francisco

Sun 31/8

8:20 a.m.-4:45 p.m.

Nonstop5h 25m

C$ 429

MontrealSan Francisco

YUL - SFO

YULSFO

Montreal Pierre Elliott Trudeau Intl

Wed 3/9

10:38 a.m.-7:16 p.m.

2 stops11h 38m

San Francisco

Sun 7/9

6:30 a.m.-10:57 p.m.

1 stop13h 27m

C$ 447

MontrealSan Francisco

YUL - SFO

YULSFO

Montreal Pierre Elliott Trudeau Intl

Fri 22/8

6:30 p.m.-9:40 p.m.

Nonstop6h 10m

San Francisco

Sun 31/8

6:30 a.m.-9:29 p.m.

1 stop11h 59m

C$ 459

MontrealSan Francisco

YUL - SFO

YULSFO

Montreal Pierre Elliott Trudeau Intl

Fri 29/8

6:45 a.m.-5:15 p.m.

2 stops13h 30m

San Francisco

Sat 6/9

7:30 a.m.-12:27 a.m.

2 stops13h 57m

C$ 472

MontrealSan Francisco

YUL - SFO

YULSFO

Montreal Pierre Elliott Trudeau Intl

Mon 25/8

4:05 p.m.-11:18 p.m.

1 stop10h 13m

C$ 260

MontrealSan Francisco

YUL - SFO

YULSFO

Montreal Pierre Elliott Trudeau Intl

Fri 29/8

7:30 a.m.-3:33 p.m.

1 stop11h 03m

C$ 262

MontrealSan Francisco

YUL - SFO

YULSFO

Montreal Pierre Elliott Trudeau Intl

Thu 28/8

6:45 a.m.-11:59 p.m.

3 stops20h 14m

C$ 263

MontrealSan Francisco

YUL - SFO

YULSFO

Montreal Pierre Elliott Trudeau Intl

Sun 31/8

6:20 a.m.-1:30 p.m.

1 stop10h 10m

C$ 275

MontrealSan Francisco

YUL - SFO

YULSFO

Montreal Pierre Elliott Trudeau Intl

Mon 22/9

6:45 a.m.-5:14 p.m.

2 stops13h 29m

C$ 280

Flights are sorted by cheapest round-trip flights first.

Deals found on 29/7

Showing 1-10 of 12 results
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Best time to book a flight from Montreal to Sonoma

Have a flexible travel schedule? Discover the best time to fly to Sonoma 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 Sonoma

How far ahead should I book a flight from Montreal to Sonoma?

Use this chart to determine the optimal time to book a round-trip flight from Montreal to Sonoma. Price data was last updated on 25 July 2025.

The price you pay for your flight from Montreal to Sonoma may vary depending on when you book. For the best chance of a lower fare, look to book 89 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

What is the cheapest month to book a flight from Montreal to Sonoma?

Currently, January is the cheapest month in which you can book a flight from Montreal to Sonoma (average of C$ 276). Flying from Montreal to Sonoma 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 SN9?

Find hourly flight availability from Montreal to Sonoma. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 1 August 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Montreal to Sonoma as you normally would.

What is the cheapest day to fly from Montreal to Sonoma?

Use this chart to determine the cheapest time to fly round-trip from Montreal to Sonoma. Price data was last updated on 16 December 2024.

Travelers seeking maximum savings on their Montreal to Sonoma flight should consider departing on Thursday 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 Sonoma

Explore weekly flight availability from Montreal to Sonoma. 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 1 August 2025.

The most flights from YMQ to SN9 are scheduled on a Monday (9 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (5 on average).

Reviews of airlines servicing Sonoma

Get insights into the airlines that provide service to Sonoma. 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 Sonoma. Reviews last updated 1 August 2025.
Read reviews from past customers who have flown Porter Airlines,Delta, andUnited Airlines from Montreal to Sonoma. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Porter Airlines
8.0
Very good
318 reviews
Check prices

Entertainment

7.0

Comfort

8.0

Boarding

8.2

Food

7.6

Overall

8.0

Crew

8.7

Reviews

1 / 20
8.0
Excellent

Anonymous,Jul 2025

LIS - YYZ

Everything was on time and easy. Crew were nice on flights and helpful. International flight, so long and typically uncomfortable but not more than most. Food and drink service were below average but you get what you pay for. Overall, good experience
Porter Airlines
8.0
Very good
318 reviews
Porter Airlines
8.0
Very good
318 reviews
Check prices

Entertainment

7.0

Comfort

8.0

Boarding

8.2

Food

7.6

Overall

8.0

Crew

8.7

Reviews

1 / 20
8.0
Excellent

Anonymous,Jul 2025

LIS - YYZ

Everything was on time and easy. Crew were nice on flights and helpful. International flight, so long and typically uncomfortable but not more than most. Food and drink service were below average but you get what you pay for. Overall, good experience
Delta
8.0
Very good
7,981 reviews
Porter Airlines
8.0
Very good
318 reviews
Check prices

Entertainment

7.0

Comfort

8.0

Boarding

8.2

Food

7.6

Overall

8.0

Crew

8.7

Reviews

1 / 20
8.0
Excellent

Anonymous,Jul 2025

LIS - YYZ

Everything was on time and easy. Crew were nice on flights and helpful. International flight, so long and typically uncomfortable but not more than most. Food and drink service were below average but you get what you pay for. Overall, good experience
United Airlines
7.4
Good
8,900 reviews
Porter Airlines
8.0
Very good
318 reviews
Check prices

Entertainment

7.0

Comfort

8.0

Boarding

8.2

Food

7.6

Overall

8.0

Crew

8.7

Reviews

1 / 20
8.0
Excellent

Anonymous,Jul 2025

LIS - YYZ

Everything was on time and easy. Crew were nice on flights and helpful. International flight, so long and typically uncomfortable but not more than most. Food and drink service were below average but you get what you pay for. Overall, good experience
American Airlines
7.2
Good
10,000 reviews
Porter Airlines
8.0
Very good
318 reviews
Check prices

Entertainment

7.0

Comfort

8.0

Boarding

8.2

Food

7.6

Overall

8.0

Crew

8.7

Reviews

1 / 20
8.0
Excellent

Anonymous,Jul 2025

LIS - YYZ

Everything was on time and easy. Crew were nice on flights and helpful. International flight, so long and typically uncomfortable but not more than most. Food and drink service were below average but you get what you pay for. Overall, good experience
WestJet
7.2
Good
2,978 reviews
Porter Airlines
8.0
Very good
318 reviews
Check prices

Entertainment

7.0

Comfort

8.0

Boarding

8.2

Food

7.6

Overall

8.0

Crew

8.7

Reviews

1 / 20
8.0
Excellent

Anonymous,Jul 2025

LIS - YYZ

Everything was on time and easy. Crew were nice on flights and helpful. International flight, so long and typically uncomfortable but not more than most. Food and drink service were below average but you get what you pay for. Overall, good experience

Related info for your journey

Find useful and relevant information for your journey from Montreal to Sonoma. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What are the cheapest airlines to fly from Montreal to Sonoma one-way?

    The cheapest airline one-way is American Airlines, with whom users have recently found tickets for as low as C$ 260. However, be on the lookout for offers from Air Canada and Delta, as they are both options that can get you from Montreal to Sonoma for a low price.

  • What are the most reliable airlines from Montreal to Sonoma?

    Consider Air New Zealand (79%), Brussels Airlines (76%) or Air Canada (74%) when booking your flight. These represent the most reliable airlines when flying from Montreal to Sonoma.

  • What are the cheapest flights from Montreal to Sonoma?

    Looking at all options, your cheapest flight can be booked for C$ 274. While the most popular route (Montreal Pierre Elliott Trudeau Intl - San Francisco) can be booked for C$ 389 on average our data indicates C$ 2,844 when flying from Montreal to Sonoma.

  • Can I find deals for flights from Montreal to Sonoma that include hotel bookings?

    Yes. In addition to deals on Montreal to Sonoma flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Montreal to Sonoma?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Montreal to Sonoma.

  • Can I find deals for business class flights from Montreal to Sonoma?

    Yes. Cheapflights offers flight deals from Montreal to Sonoma 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 Sonoma?

    Currently, January is the cheapest month in which you can book a flight from Montreal to Sonoma (average of C$ 276). Flying from Montreal to Sonoma 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.

See more FAQs

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See prices for flight routes from nearby airports that may be better suited for you.
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Top 6 airlines flying from Montreal to Sonoma

Discover the top 6 airlines that operate flights from Montreal to Sonoma. 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 1 August 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapestC$ 240AverageC$ 621FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
Porter AirlinesCheapestC$ 305AverageC$ 394FlexibilityNo cancel feeOn-time52%
Search Porter Airlines flights
WestJetCheapestC$ 333AverageC$ 391FlexibilityNo cancel feeOn-time60%
Search WestJet flights
Air CanadaCheapestC$ 382AverageC$ 555FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
United AirlinesCheapestC$ 390AverageC$ 659FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
Air TransatCheapestC$ 503AverageC$ 539FlexibilityNo cancel feeOn-time50%
Search Air Transat flights

Fly with Cheapflights

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How does Cheapflights help users find flights from Montreal to Sonoma?

Cheapflights helps you search for flights from Montreal to Sonoma 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 Sonoma?

By finding flights from multiple airlines and providers at completely no cost, Cheapflights helps millions of users like you annually find the best flights to Sonoma from Montreal.

Can Cheapflights find flights from Montreal to Sonoma with no change fees?

Yes! Cheapflights helps users easily find flights from Montreal to Sonoma with no change fees.

Can Cheapflights notify me if prices for flights from Montreal to Sonoma become cheaper?

Not ready to book yet? You can track prices for flights from Montreal to Sonoma on Cheapflights with our Price Alert feature and get notified when better prices are available.

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