YUL - SOF

$349 Find Cheap Flights from Montreal to Sofia

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Montreal to Sofia departing on 7/28. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Sofia

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Montreal to Sofia, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Montreal to Sofia, as well as popular online travel agencies
Travelers love KAYAK
41,299,237 searches in the past 7 days on KAYAK

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Bundle and saveSave money when you bundle your flight + hotel.

Filter your dealsChoose cabin class, free Wi-Fi and more.

Everything you should know

Cheapest round-trip
$822
Typical prices: $1,115-$874
Multiple Airlines
Tue 9/15Thu 10/29
YUL - SOF • 1 stop
Cheapest one-way
$349
Multiple Airlines
Tue 7/28
YUL - SOF • 2 stops
Top airlines
Cheapest • from $860 (round-trip)
Best reviews • 7.6 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Nonstop flights
Not available
There are currently no direct flights between Montreal and Sofia. You'll need at least 1 connection.
Insights
Insights
Insights
Insights
Top layover airports
Cheapest • Avg $949 (round-trip)
Shortest trip • 11h 28m (one-way)
Insights
Insights
Insights
Insights
When to book
in advance
Our data shows that travelers who book at least 4 weeks in advance save around 30% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
Cheapest • 21% price drop
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Start a new search
KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Sofia!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Montreal to Sofia (YUL-SOF)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Montreal to Sofia that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Montreal to Sofia

Tue, Sep 15 - Thu, Oct 29
Multiple Airlines Logo
11:45 pm - 1:35 am
YUL
-
SOF
18h 50m
1 stop
Multiple Airlines Logo
4:50 pm - 8:55 pm
SOF
-
YUL
34h 05m
3 stops
$822Multiple Airlines
Fri, Sep 18 - Tue, Oct 20
Multiple Airlines Logo
11:40 pm - 9:25 pm
YUL
-
SOF
14h 45m
1 stop
Multiple Airlines Logo
6:30 am - 4:05 pm
SOF
-
YUL
16h 35m
2 stops
$852Multiple Airlines
Wed, Oct 7 - Wed, Oct 21
Multiple Airlines Logo
4:40 pm - 10:20 am
YUL
-
SOF
10h 40m
1 stop
Multiple Airlines Logo
8:00 am - 1:50 pm
SOF
-
YUL
12h 50m
1 stop
$853Multiple Airlines
Fri, Sep 18 - Tue, Oct 20
Multiple Airlines Logo
11:45 pm - 1:35 am
YUL
-
SOF
18h 50m
1 stop
Multiple Airlines Logo
6:45 pm - 12:37 am
SOF
-
YUL
36h 52m
3 stops
$854Multiple Airlines
Wed, Oct 7 - Wed, Oct 21
Multiple Airlines Logo
4:40 pm - 10:20 am
YUL
-
SOF
10h 40m
1 stop
Multiple Airlines Logo
8:00 am - 1:50 pm
SOF
-
YUL
12h 50m
1 stop
$855Multiple Airlines
Wed, Oct 7 - Wed, Oct 28
Multiple Airlines Logo
4:40 pm - 10:20 am
YUL
-
SOF
10h 40m
1 stop
Multiple Airlines Logo
2:00 pm - 7:20 pm
SOF
-
YUL
11h 20m
1 stop
$856Multiple Airlines
Wed, Oct 7 - Wed, Oct 28
Multiple Airlines Logo
4:40 pm - 10:20 am
YUL
-
SOF
10h 40m
1 stop
Multiple Airlines Logo
6:00 am - 7:20 pm
SOF
-
YUL
19h 20m
1 stop
$858Multiple Airlines
Wed, Oct 7 - Thu, Oct 22
SWISS Logo
4:40 pm - 10:20 am
YUL
-
SOF
10h 40m
1 stop
SWISS Logo
11:05 am - 7:21 pm
SOF
-
YUL
15h 16m
2 stops
$860SWISS
Wed, Oct 7 - Wed, Oct 21
Multiple Airlines Logo
4:40 pm - 10:20 am
YUL
-
SOF
10h 40m
1 stop
Multiple Airlines Logo
12:55 pm - 11:21 pm
SOF
-
YUL
17h 26m
2 stops
$864Multiple Airlines
Wed, Oct 7 - Wed, Oct 21
Multiple Airlines Logo
4:40 pm - 10:20 am
YUL
-
SOF
10h 40m
1 stop
Multiple Airlines Logo
6:10 am - 6:52 pm
SOF
-
YUL
19h 42m
2 stops
$866Multiple Airlines
Booking Insights

KAYAK's insights & trends for Montreal to Sofia flights

Get data-powered insights and trends into flights from Montreal to Sofia to help you find the cheapest flights, the best time to fly and much more.

How much is a round-trip flight from Montreal Pierre Elliott Trudeau Intl Airport to Sofia?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from Montreal Pierre Elliott Trudeau Intl Airport to Sofia departing in September.

What is the cheapest month to fly from Montreal Pierre Elliott Trudeau Intl Airport to Sofia?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Montreal Pierre Elliott Trudeau Intl Airport to Sofia, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Montreal Pierre Elliott Trudeau Intl Airport to Sofia is April, where tickets cost $830 (return) on average. On the other hand, the most expensive months are July and December, where the average cost of round-trip tickets is $1,223 and $1,163 respectively.

How far in advance should I book a flight from Montreal Pierre Elliott Trudeau Intl Airport to Sofia?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Montreal Pierre Elliott Trudeau Intl Airport to Sofia, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from Montreal Pierre Elliott Trudeau Intl Airport to Sofia, you should book around 4 weeks before departure, which saves you about 30% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 6 weeks before departure.

Good to know

Low seasonJanuary
Cheapest flight$349
Best time to beat the crowds with an average 6% drop in price.
Most popular time to fly with an average 17% increase in price.
Flight from Montreal to Sofia

When to book flights from Montreal to Sofia

Are your dates flexible? Find out the best times to travel from Montreal to Sofia based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking Montreal to Sofia flights

  • What is the cheapest flight from Montreal Pierre Elliott Trudeau Intl Airport to Sofia?

    In the last 5 days, the lowest price for a flight from Montreal Pierre Elliott Trudeau Intl Airport to Sofia was $349 for a one-way ticket and $822 for a round-trip.

  • Do I need a passport to fly between Montreal and Sofia?

    Yes

  • Which aircraft models fly most regularly from Montreal to Sofia?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Montreal to Sofia?

    oneworld, and Star Alliance are the airline alliances operating flights between Montreal and Sofia, with oneworld being the most commonly used for this route.

  • Which is the best airline for flights from Montreal to Sofia, Austrian Airlines or Lufthansa?

    The two airlines most popular with KAYAK users for flights from Montreal to Sofia are Austrian Airlines and Lufthansa. With an average price for the route of $1,240 and an overall rating of 7.6, Austrian Airlines is the most popular choice. Lufthansa is also a great choice for the route, with an average price of $1,180 and an overall rating of 6.8.

  • How does KAYAK find such low prices on flights from Montreal to Sofia?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Montreal to Sofia.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Montreal to Sofia?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Sofia from Montreal is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Montreal to Sofia?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Sofia with an airline and back to Montreal with another airline. Booking your flights between Montreal and SOF can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Montreal to Sofia?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Sofia from Montreal up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top 3 airlines serving from Montreal to Sofia

 
See real verified KAYAK customer reviews for airlines flying from Montreal to Sofia. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Montreal to Sofia? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.6
Austrian AirlinesOverall score based on 926 reviews
7.6Boarding
8.1Crew
6.8Entertainment
6.8Food
7.3Comfort
Airline reviews

Absolutely the worst food I've ever had on any flight. Otherwise, the flight is OK - just your regular transatlantic economy. Condor should stop saving pennies on meals. They save a penny, lose a dollar.

6.0 GoodAlex, Jun 2026
VIE - FRA
Read more Austrian Airlines reviews

Absolutely the worst food I've ever had on any flight. Otherwise, the flight is OK - just your regular transatlantic economy. Condor should stop saving pennies on meals. They save a penny, lose a dollar.

The layover period at Frankfurt of one hour and forty minutes was not enough time to clear the two-hour line at passport control: we missed the flight to San Francisco. Condor did a good job rebooking us that same day, but our bags ended up in Los Angeles.

This is truly the worst travel experience of my life. The UK ETA program had a technical failure, and I was stuck in limbo for 24 hours, unable to board my flight and unable to navigate anything in my itinerary. I had to rebook an entirely new flight and I’m now out doubled the money. Unconscionable.

OK, would prefer some meat for dinner, not just pasta although was tasty. There was only one dish, no choices

Flight delayed with no explanation. Boarding was confused (proceed to plane, go back to waiting area).

Accommodate the passangers at the gates. They only allow groups 1-3 to sit near/at the gate. We had to wait 3 HRs an had to look for a seat far away from the gate. Other than that was like other Airports.

It was a great experience. The aircraft is a bit dated but other than that it was great.

Last few years I didn't not have great experience with United Airlines.

The airport gate in Lyon was an insult to human dignity…. Shame kn the French authorities

Short flight. Bare bones and kinda seeming like an older plane. But got me there on time and that's what counts. Perfectly fine flight all the way from start to finish.

I never got to Lufthansa because of Air Canadas negligence.

The flight got delayed 3 hours from Montreal and we missed our connecting flight so it was a long journey

Not great - seats were very narrow and food was terrible.

The service and food was excellent. The remote control for entertainment did not function properly.

All was good, except my USB charging did not work, so my phone got drained and I could not charge it. Same happened to my neighbour.

A bit more space? Not practical, I know. I felt squished in but part of that could have been the man sitting next to me.

I purposely bought a seat upstairs and your airline moved it to a random aisle seat. The only good part about this being an older plane was that the seats weren’t so tight that I couldn’t relax at all. Still will never fly Lufthansa again.

The plane (Mitsubishi CRJ) felt old, creaking and not very new. The crew was okay. Hot water provision was broken so hot beverages could't be served.

Not bad. We had preboarding tickets but the preboarding was badly managed. We lined up behind all the parents with little kids etc and when we got to the front of the line the attendant deliberately turned away from us and ignored us until I asked to be allowed to go to the gate. She started telling us that we had to wait until I told her we had preboarding then she let us through.

The crew was fantastic. They were always there when we needed them. No wifi on an 11 hour flight was a bummer. The entertainment onboard was boring.

Good flight, no turbulence. I felt safe and comfortable which is really important when I am just a passenger.

Cancelled flight and re booked seats were a downgrade. British Airways said the upgrade was t available but when I checked it was but then they wouldn’t make it right

Someone switched seats in business class so they could sit together and we were left apart (3). Very disappointing. Staff did nothing

Very good staff members with sincere passion and responsibility in their job.

The seats were comfortable. So many empty seats allowed for stretching out and sleeping. The onboard entertainment was pretty good. The cabin crew were so kind and kept the passengers well- hydrated, and well fed.

I was unable to board this flight because of visa changes that I was not alerted about and I’ve been unable to contact Kayak to obtain a refund / credit anything.

Need thicker and wider blankets. Food was below standard especially in the fist leg.

Plane was extremely delayed, but not all of it was BA fault (some was). Worst part was lack of room - this had as much space as an Allegiant flight. I thought transatlantic usually gave you an extra inch or two, but not this one. Entertainment system sporadically worked and didn’t have great options. Overhead bins are old and tiny, not as good as aunties new planes.

Decrepit planes, poor business class layout designed to maximize revenue, no decent movie selection.

The leg from Portland to Heathrow was great for a business class ticket. The BA leg from Heathrow to Lisbon was terrible. Basically coach seating with an empty seat between you and next passenger. Absolutely no leg room. Should not have been charged for business class and it was a 3 hour flight.

Everything you need to know for your flight from Montreal to Sofia

Information on your arrival and departure airports