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Cheap flights from Montreal to Sonoma from C$ 263

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 18/6. Fares are subject to change and may not be available on all flights or dates of travel.
YMQ — SFO
28 Apr — 5 May1
1 adult
1 adult, Economy, 0 bags
Cheapflights Tip: The best prices from Montreal to Sonoma are usually found in May or September, booked 18 days in advance, depart on a Friday or Thursday and return on a Monday

Cheap flight deals from Montreal to Sonoma

Enter your travel dates to find the best prices.

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 29 March 2026.

Mon 1/66:45 a.m.
YUL
-
SFO
2 stops12h 55m
WestJet
Sun 14/66:05 p.m.
SFO
-
YUL
1 stop10h 00m
WestJet
Deal found 28/3C$ 458
Tue 9/66:45 a.m.
YUL
-
SFO
2 stops12h 55m
WestJet
Sat 20/66:05 p.m.
SFO
-
YUL
1 stop10h 00m
WestJet
Deal found 27/3C$ 463
Fri 17/46:45 a.m.
YUL
-
SFO
1 stop9h 00m
Porter Airlines
Thu 23/41:45 p.m.
SFO
-
YUL
1 stop7h 50m
Porter Airlines
Deal found 28/3C$ 475
Thu 7/56:45 a.m.
YUL
-
SFO
1 stop8h 38m
Porter Airlines
Wed 13/51:20 p.m.
SFO
-
YUL
1 stop8h 17m
Porter Airlines
Deal found 28/3C$ 477
Mon 18/56:45 a.m.
YUL
-
SFO
2 stops12h 55m
WestJet
Mon 25/56:05 p.m.
SFO
-
YUL
1 stop10h 00m
WestJet
Deal found 27/3C$ 478
Thu 7/58:10 a.m.
YUL
-
SFO
Nonstop6h 15m
Air Canada
Wed 13/58:05 a.m.
SFO
-
YUL
Nonstop5h 40m
Air Canada
Deal found 28/3C$ 479
Tue 2/66:45 a.m.
YUL
-
SFO
2 stops12h 55m
WestJet
Sat 6/66:05 p.m.
SFO
-
YUL
1 stop10h 00m
WestJet
Deal found 24/3C$ 481
Fri 29/56:45 a.m.
YUL
-
SFO
2 stops12h 55m
WestJet
Mon 1/66:05 p.m.
SFO
-
YUL
1 stop10h 00m
WestJet
Deal found 24/3C$ 482
Thu 4/66:45 a.m.
YUL
-
SFO
2 stops12h 55m
WestJet
Thu 18/66:05 p.m.
SFO
-
YUL
1 stop10h 00m
WestJet
Deal found 24/3C$ 486
Tue 21/46:45 a.m.
YUL
-
SFO
1 stop9h 00m
Porter Airlines
Fri 24/41:45 p.m.
SFO
-
YUL
1 stop7h 50m
Porter Airlines
Deal found 28/3C$ 488

Find flight deals from Montreal to Sonoma

Keep the following information in mind while searching for Montreal to Sonoma flight deals. Data was last updated 29 March 2026.

Round-trip from

C$ 458

One-way from

C$ 275

Popular in

December

Cheapest in

May

Average price

C$ 650
WestJet
  • WestJet
  • 1/6-14/6
  • 3 total stops
  • 22h 55m total
  • Montreal to Sonoma
Search Deals
WestJet
  • WestJet
  • 15/6
  • 2 total stops
  • 12h 55m total
  • Montreal to Sonoma
Search Deals
Highest demand for flights based on searches. 8% potential increase in price (C$ 75 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (C$ 18 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in March 2026
Search Deals

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 29 March 2026.
Use the filters below to find and compare flights from Montreal to Sonoma that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

MontrealSan Francisco

YUL - SFO

YULSFO

Montreal Pierre Elliott Trudeau Intl

Wed 15/4

2:20 p.m.-1:17 a.m.

1 stop13h 57m

San Francisco

Mon 20/4

12:45 a.m.-4:10 p.m.

2 stops12h 25m

C$ 515

MontrealSan Francisco

YUL - SFO

YULSFO

Montreal Pierre Elliott Trudeau Intl

Fri 1/5

9:45 a.m.-5:12 p.m.

1 stop10h 27m

San Francisco

Mon 4/5

11:56 p.m.-10:40 a.m.

1 stop7h 44m

C$ 517

MontrealSan Francisco

YUL - SFO

YULSFO

Montreal Pierre Elliott Trudeau Intl

Sat 25/4

11:23 a.m.-10:55 p.m.

2 stops14h 32m

San Francisco

Sat 9/5

5:00 a.m.-9:26 p.m.

2 stops13h 26m

C$ 554

MontrealSan Francisco

YUL - SFO

YULSFO

Montreal Pierre Elliott Trudeau Intl

Wed 6/5

12:50 p.m.-7:07 p.m.

1 stop9h 17m

San Francisco

Sat 9/5

11:25 a.m.-11:57 p.m.

1 stop9h 32m

C$ 558

MontrealSan Francisco

YUL - SFO

YULSFO

Montreal Pierre Elliott Trudeau Intl

Sat 2/5

12:42 p.m.-8:28 p.m.

1 stop10h 46m

San Francisco

Tue 5/5

10:55 p.m.-11:59 a.m.

1 stop10h 04m

C$ 560

MontrealSan Francisco

YUL - SFO

YULSFO

Montreal Pierre Elliott Trudeau Intl

Fri 4/9

6:35 p.m.-9:50 p.m.

Nonstop6h 15m

San Francisco

Sun 13/9

5:05 a.m.-5:30 p.m.

1 stop9h 25m

C$ 561
Quickest round-trip

MontrealSan Francisco

YUL - SFO

YULSFO

Montreal Pierre Elliott Trudeau Intl

Thu 16/7

6:35 p.m.-9:51 p.m.

Nonstop6h 16m

San Francisco

Tue 21/7

6:05 a.m.-5:30 p.m.

1 stop8h 25m

C$ 585

MontrealSan Francisco

YUL - SFO

YULSFO

Montreal Pierre Elliott Trudeau Intl

Thu 9/7

9:45 a.m.-5:18 p.m.

1 stop10h 33m

San Francisco

Mon 13/7

11:47 p.m.-8:25 a.m.

Nonstop5h 38m

C$ 592

MontrealSan Francisco

YUL - SFO

YULSFO

Montreal Pierre Elliott Trudeau Intl

Sun 19/4

7:00 a.m.-11:59 p.m.

2 stops19h 59m

San Francisco

Mon 27/4

9:35 p.m.-11:36 a.m.

1 stop11h 01m

C$ 633

MontrealSan Francisco

YUL - SFO

YULSFO

Montreal Pierre Elliott Trudeau Intl

Sat 29/8

6:35 p.m.-9:50 p.m.

Nonstop6h 15m

San Francisco

Sun 13/9

5:05 a.m.-5:30 p.m.

1 stop9h 25m

C$ 633

Flights are sorted by cheapest round-trip flights first.

Deals found on 28/3

Showing 1-10 of 19 resultsSorted by cheapest first
1
2

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 13 March 2026.

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 18 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, April is the cheapest month in which you can book a flight from Montreal to Sonoma (average of C$ 288). Flying from Montreal to Sonoma in January is currently the most expensive (average of C$ 445). 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 29 March 2026.

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.

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 29 March 2026.

The most flights from YMQ to SN9 are scheduled on a Monday (4 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (4 on average).

How much does it cost to fly round-trip from Montreal to Sonoma?

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 29 March 2026.
Read reviews from past customers who have flown Porter Airlines,United Airlines, andWestJet 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
430 reviews
Check prices

Boarding

8.2

Crew

8.6

Food

7.6

Comfort

8.0

Overall

8.0

Entertainment

7.0

Reviews

1 / 20
10.0
Excellent

John,Mar 2026

YYZ - PVR

I'm 6ft 4in. The seats don't have enough room. But was a good flight.
Porter Airlines
8.0
Very good
430 reviews
Porter Airlines
8.0
Very good
430 reviews
Check prices

Boarding

8.2

Crew

8.6

Food

7.6

Comfort

8.0

Overall

8.0

Entertainment

7.0

Reviews

1 / 20
10.0
Excellent

John,Mar 2026

YYZ - PVR

I'm 6ft 4in. The seats don't have enough room. But was a good flight.
United Airlines
7.4
Good
9,510 reviews
Porter Airlines
8.0
Very good
430 reviews
Check prices

Boarding

8.2

Crew

8.6

Food

7.6

Comfort

8.0

Overall

8.0

Entertainment

7.0

Reviews

1 / 20
10.0
Excellent

John,Mar 2026

YYZ - PVR

I'm 6ft 4in. The seats don't have enough room. But was a good flight.
WestJet
7.2
Good
3,305 reviews
Porter Airlines
8.0
Very good
430 reviews
Check prices

Boarding

8.2

Crew

8.6

Food

7.6

Comfort

8.0

Overall

8.0

Entertainment

7.0

Reviews

1 / 20
10.0
Excellent

John,Mar 2026

YYZ - PVR

I'm 6ft 4in. The seats don't have enough room. But was a good flight.
Air Canada
7.1
Good
10,857 reviews
Porter Airlines
8.0
Very good
430 reviews
Check prices

Boarding

8.2

Crew

8.6

Food

7.6

Comfort

8.0

Overall

8.0

Entertainment

7.0

Reviews

1 / 20
10.0
Excellent

John,Mar 2026

YYZ - PVR

I'm 6ft 4in. The seats don't have enough room. But was a good flight.

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.

  • How long is the flight from Montreal to Sonoma?

    Airlines like United Airlines and Delta fly from Montreal to Sonoma in about 9h 17m. The time it takes to get you to your destination can typically vary by up to 4h 40m. There are 4073 km between Montreal and Sonoma. This flight may include one or multiple stops.

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

    The cheapest airline one-way is Porter Airlines, with whom users have recently found tickets for as low as C$ 237. However, be on the lookout for offers from Air Canada and United Airlines, 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 Brussels Airlines (62%), Air Canada (62%) or United Airlines (62%) 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$ 266. While the most popular route (Montreal Pierre Elliott Trudeau Intl - San Francisco) can be booked for C$ 493 on average, our data indicates C$ 1,384 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, April is the cheapest month in which you can book a flight from Montreal to Sonoma (average of C$ 288). Flying from Montreal to Sonoma in January is currently the most expensive (average of C$ 445). 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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Alternative routes for Montreal to Sonoma

See prices for flight routes from nearby airports that may be better suited for you.
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Top 5 airlines flying from Montreal to Sonoma

Discover the top 5 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 29 March 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapestC$ 258AverageC$ 681FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
WestJetCheapestC$ 286AverageC$ 392FlexibilityNo cancel feeOn-time60%
Search WestJet flights
Porter AirlinesCheapestC$ 350AverageC$ 502FlexibilityNo cancel feeOn-time52%
Search Porter Airlines flights
United AirlinesCheapestC$ 397AverageC$ 702FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
Air CanadaCheapestC$ 453AverageC$ 628FlexibilityNo cancel feeOn-time67%
Search Air Canada flights

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 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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