$298 Cheap Flights from Montreal (YUL) to Porto (OPO)

View $298 flight on Tue, Aug 19, 2025Opens in a new window

Popular airlines from Montreal–Trudeau Intl. Airport (YUL) to Porto Airport (OPO)

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Cheap Flights from Montreal to Porto (YUL-OPO)

Prices were available within the past 7 days and start at $298 for one-way flights and $396 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

American Airlines
Mon, Nov 24 - Tue, Dec 2
YUL
Montreal
OPO
Porto
$396 Roundtrip, found 5 days ago
$396
Roundtrip
found 5 days ago
Select American Airlines flight, departing Mon, Nov 24 from Montreal to Porto, returning Tue, Dec 2, priced at $396 found 5 days ago
American Airlines
Mon, Nov 24 - Sat, Nov 29
YUL
Montreal
OPO
Porto
$404 Roundtrip, found 5 days ago
$404
Roundtrip
found 5 days ago
Select American Airlines flight, departing Mon, Nov 24 from Montreal to Porto, returning Sat, Nov 29, priced at $404 found 5 days ago
American Airlines
Fri, Nov 21 - Thu, Nov 27
YUL
Montreal
OPO
Porto
$438 Roundtrip, found 5 days ago
$438
Roundtrip
found 5 days ago
Select American Airlines flight, departing Fri, Nov 21 from Montreal to Porto, returning Thu, Nov 27, priced at $438 found 5 days ago
American Airlines
Mon, Nov 24 - Sun, Nov 30
YUL
Montreal
OPO
Porto
$461 Roundtrip, found 5 days ago
$461
Roundtrip
found 5 days ago
Select American Airlines flight, departing Mon, Nov 24 from Montreal to Porto, returning Sun, Nov 30, priced at $461 found 5 days ago
Air Transat
Mon, Sep 1 - Wed, Oct 1
YUL
Montreal
OPO
Porto
$524 Roundtrip, found 5 days ago
$524
Roundtrip
found 5 days ago
Select Air Transat flight, departing Mon, Sep 1 from Montreal to Porto, returning Wed, Oct 1, priced at $524 found 5 days ago
Porter Airlines
Tue, Aug 26 - Tue, Sep 9
YUL
Montreal
OPO
Porto
$531 Roundtrip, found 4 days ago
$531
Roundtrip
found 4 days ago
Select Porter Airlines flight, departing Tue, Aug 26 from Montreal to Porto, returning Tue, Sep 9, priced at $531 found 4 days ago
Delta
Thu, Oct 2 - Thu, Oct 9
YUL
Montreal
OPO
Porto
$544 Roundtrip, found 2 days ago
$544
Roundtrip
found 2 days ago
Select Delta flight, departing Thu, Oct 2 from Montreal to Porto, returning Thu, Oct 9, priced at $544 found 2 days ago
KLM
Thu, Oct 9 - Mon, Oct 13
YUL
Montreal
OPO
Porto
$602 Roundtrip, found 2 days ago
$602
Roundtrip
found 2 days ago
Select KLM flight, departing Thu, Oct 9 from Montreal to Porto, returning Mon, Oct 13, priced at $602 found 2 days ago
Air Canada
Mon, Sep 29 - Mon, Oct 20
YUL
Montreal
OPO
Porto
$609 Roundtrip, found 2 days ago
$609
Roundtrip
found 2 days ago
Select Air Canada flight, departing Mon, Sep 29 from Montreal to Porto, returning Mon, Oct 20, priced at $609 found 2 days ago
TAP Portugal
Mon, Sep 22 - Tue, Sep 30
YUL
Montreal
OPO
Porto
$626 Roundtrip, found 5 hours ago
$626
Roundtrip
found 5 hours ago
Select TAP Portugal flight, departing Mon, Sep 22 from Montreal to Porto, returning Tue, Sep 30, priced at $626 found 5 hours ago

Find the cheapest month to fly from Montreal (YUL) to Porto (OPO)

January is typically the cheapest month to fly

From $417 - $850 per traveler.

Graph displaying average flight prices per month

Alternative airports near Porto

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Dr. Francisco de Sa Carneiro OPO. Cheapest and Closest option available. Average driving time to city center is 14 minutes. Flights from $881
OPO
Dr. Francisco de Sa Carneiro
CheapestClosest
Average driving time to city center14 min
Flights from $881
Flights from Montreal (YUL) to Porto (OPO)
Origin airport
Pierre Elliott Trudeau Intl.
Destination airport
Dr. Francisco de Sa Carneiro
Airlines serving
Air Canada, Air France, Air Transat, American Airlines, Austrian Airlines, British Airways, Brussels Airlines, Delta, KLM, Lufthansa, Porter Airlines, Royal Air Maroc, SATA International-Azores Airlines S.A., Swiss International Air Lines, TAP Portugal, United
Roundtrip price
$396
Distance
3192 mi
Average flight time
11 hours 27 mins

Montreal to Porto Flights

The cheapest times to fly from Montreal to Porto

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Montreal to Porto are during the month of November. You can find some of the cheapest flights from Montreal to Porto with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Montreal to Porto

Sunday is one of the best days to book for cheap flights from Montreal to Porto: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Montreal to Porto

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Montreal to Porto in 2025. You can also book with separate airlines for your outbound and return journeys, from $298 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Montreal to Porto flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Montreal to Porto airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Frequently asked questions

How much does a flight from Pierre Elliott Trudeau Intl. Airport (YUL) to Dr. Francisco de Sa Carneiro Airport (OPO) cost?
Book cheap return flights starting at $517 from Pierre Elliott Trudeau Intl. Airport (YUL) to Dr. Francisco de Sa Carneiro Airport (OPO). This information is based on the cheapest price found on Expedia for this return journey departing within the next three months. This airfare is for a Air Transat flight leaving YUL on August 12 2025 and touching down at OPO. The price was last updated on July 23 2025 and has not changed since.
What is the cheapest month to fly from YUL to OPO?
The cheapest flights from YUL to OPO are usually during off-peak season, when demand is lower. To save money, avoid flying during public holidays, school breaks and major local events.
What is the cheapest airline that flies from YUL to OPO?
At the moment, the cheapest airline operating one-way flights from YUL to OPO is Porter Airlines. You can book a seat on this route from $335. This fare is based on the lowest price found on Expedia departing within the next three months. The flight takes off from YUL on July 28 2025. Prices were last updated on July 23 2025 and have not changed since.
How many flights per day from Pierre Elliott Trudeau Intl. Airport (YUL) to Dr. Francisco de Sa Carneiro Airport (OPO)?
You'll need to book a flight with a layover if you're traveling from Pierre Elliott Trudeau Intl. Airport (YUL) to Dr. Francisco de Sa Carneiro Airport (OPO). There are no daily direct flights on this route. However, just filter your search to include one or more stops to find an option that works for you.
What day of the week has the most flights from YUL to OPO?
Usually you'll have the most choice when it comes to flights on a Friday. Tuesdays tend to be the quietest.* But this can vary depending on the time of year, carrier and other factors.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Pierre Elliott Trudeau Intl. Airport (YUL) to Dr. Francisco de Sa Carneiro Airport (OPO)?
Opt for a flight from Pierre Elliott Trudeau Intl. Airport (YUL) to Dr. Francisco de Sa Carneiro Airport (OPO) that leaves before 3 PM to reduce the risk of cancellations. Departures later than this are on average 22% more likely to be canceled.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from Pierre Elliott Trudeau Intl. Airport (YUL) to Dr. Francisco de Sa Carneiro Airport (OPO) last-minute?
Last-minute bookings from YUL to OPO are usually more expensive. To lock in the best prices, start searching for flights as early as possible. That being said, if you're flexible with your travel plans, you may land a cheap fare right before your trip.
Is it cheaper to book a YUL to OPO flight and hotel package?
Booking a YUL to OPO flight and hotel package is generally cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your travels in one place. Select from our impressive range of stays and then add car rentals, activities and flights to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Pierre Elliott Trudeau Intl. Airport (YUL) to Dr. Francisco de Sa Carneiro Airport (OPO)?
In most cases, you can cancel or modify your YUL to OPO flight. However, there may be additional fees, especially if you made your booking more than 24 hours ago. Double-check your itinerary for the airline's fees and rules on flight changes, or if you'd like more information, head to our Customer Service portal.

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