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$269+ Cheap flights from Pierre Elliott Trudeau Intl (YUL) to Porto (OPO)

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 3/7. Fares are subject to change and may not be available on all flights or dates of travel.
YUL — OPO
nov. 28 — dic. 51
vie. 11/28
vie. 12/5
1 adult, Economy
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Cheapflights Tip: The best prices from Montreal Pierre Elliott Trudeau Intl to Porto are usually found in February or November, booked 74 days in advance, depart on a Tuesday or Friday and return on a Monday

Cheap flight deals from Pierre Elliott Trudeau Intl to Porto

Discover tips and strategies to find the most affordable flight options for your journey from Pierre Elliott Trudeau Intl (YUL) to Porto (OPO). 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 octubre 29, 2025.

Most accurate provider

Gotogate
3 stars

Most trusted provider

Gotogate
3 stars

Round-trip from

$544
(KLM)

One-way from

$269
(SmartFares)

Popular in

December

Cheapest in

February

Average price

$677
Provider with most accurate pricing for Montreal Pierre Elliott Trudeau Intl-Porto flight deals.
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Provider most trusted by Cheapflights users for Montreal Pierre Elliott Trudeau Intl-Porto flights.
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From Montreal Pierre Elliott Trudeau Intl to Porto
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One-way flight from Montreal Pierre Elliott Trudeau Intl to Porto
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Highest demand for flights based on searches. 8% potential increase in price ($62 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($30 potential savings vs. average RT price).
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Average for round-trip flights in October 2025
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Find flight deals from Pierre Elliott Trudeau Intl to Porto

Cheapest flights from Pierre Elliott Trudeau Intl to Porto
Explore the most affordable flight options available from Pierre Elliott Trudeau Intl to Porto. Find the lowest fares from popular airlines and budget airlines, with prices last updated on octubre 29, 2025.

This KLM deal was found by Cheapflights users on 10/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 12/37:05 pmYUL - OPO
1 stop10h 25mKLM
vie. 12/126:30 amOPO - YUL
1 stop15h 50mKLM
Deal found 10/27$545
This Delta deal was found by Cheapflights users on 10/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 11/107:05 pmYUL - OPO
1 stop10h 25mDelta
lun. 11/246:30 amOPO - YUL
2 stops34h 29mDelta
Deal found 10/27$573
This Delta deal was found by Cheapflights users on 10/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 11/96:00 amYUL - OPO
2 stops35h 25mDelta
mié. 11/196:00 amOPO - YUL
1 stop16h 20mDelta
Deal found 10/29$580
This KLM deal was found by Cheapflights users on 10/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 11/295:00 pmYUL - OPO
1 stop12h 30mKLM
sáb. 12/69:25 amOPO - YUL
2 stops19h 07mKLM
Deal found 10/28$593
This Air Canada deal was found by Cheapflights users on 10/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 11/53:00 pmYUL - OPO
1 stop13h 30mAir Canada
mié. 11/126:00 amOPO - YUL
2 stops22h 22mAir Canada
Deal found 10/29$594
This United Airlines deal was found by Cheapflights users on 10/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 11/101:35 pmYUL - OPO
2 stops14h 55mUnited Airlines
lun. 11/2412:35 pmOPO - YUL
2 stops24h 10mUnited Airlines
Deal found 10/27$595
This Delta deal was found by Cheapflights users on 10/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 11/96:00 amYUL - OPO
2 stops23h 30mDelta
sáb. 11/226:00 amOPO - YUL
2 stops35h 00mDelta
Deal found 10/27$597
This KLM deal was found by Cheapflights users on 10/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 11/217:05 pmYUL - OPO
2 stops15h 20mKLM
mar. 11/259:55 amOPO - YUL
2 stops18h 31mKLM
Deal found 10/27$604
This United Airlines deal was found by Cheapflights users on 10/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 11/257:00 pmYUL - OPO
2 stops33h 30mUnited Airlines
mar. 12/26:00 amOPO - YUL
2 stops39h 56mUnited Airlines
Deal found 10/28$611
This Delta deal was found by Cheapflights users on 10/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 11/156:00 amYUL - OPO
2 stops23h 30mDelta
vie. 11/286:30 amOPO - YUL
1 stop15h 50mDelta
Deal found 10/29$617

Cheapflights Fare Finder

 
Customize your flight search to find flights from Pierre Elliott Trudeau Intl to Porto 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 2,558,603 searches. Data last updated octubre 29, 2025.
Use the filters below to find and compare flights from Montreal Pierre Elliott Trudeau Intl Airport to Porto that are best for you.

Fly from

Pierre Elliott Trudeau Intl

Fly to

Porto

Route

Depart

Return

Price

MontrealPorto

YUL - OPO

YULOPO

Montreal Pierre Elliott Trudeau Intl

mar. 2/10

5:00 pm-10:30 am

1 stop12h 30m

Porto

mié. 2/18

6:00 am-5:20 pm

1 stop16h 20m

$544

MontrealPorto

YUL - OPO

YULOPO

Montreal Pierre Elliott Trudeau Intl

lun. 3/2

7:10 pm-3:25 pm

1 stop15h 15m

Porto

mié. 3/11

6:00 am-6:20 pm

1 stop16h 20m

$550

MontrealPorto

YUL - OPO

YULOPO

Montreal Pierre Elliott Trudeau Intl

jue. 3/26

6:00 pm-10:25 am

1 stop12h 25m

Porto

mar. 3/31

5:00 am-4:55 pm

1 stop16h 55m

$559

MontrealPorto

YUL - OPO

YULOPO

Montreal Pierre Elliott Trudeau Intl

dom. 3/22

6:00 pm-10:30 am

1 stop12h 30m

Porto

mar. 4/7

4:20 pm-12:05 pm

1 stop24h 45m

$563

MontrealPorto

YUL - OPO

YULOPO

Montreal Pierre Elliott Trudeau Intl

dom. 3/15

8:05 pm-10:30 am

1 stop10h 25m

Porto

mié. 3/25

11:25 am-4:20 pm

1 stop32h 55m

$564

MontrealPorto

YUL - OPO

YULOPO

Montreal Pierre Elliott Trudeau Intl

mar. 3/17

6:00 pm-10:30 am

1 stop12h 30m

Porto

jue. 3/26

11:20 am-1:15 pm

1 stop29h 55m

$564

MontrealPorto

YUL - OPO

YULOPO

Montreal Pierre Elliott Trudeau Intl

jue. 3/19

6:00 pm-10:25 am

1 stop12h 25m

Porto

jue. 3/26

11:20 am-1:15 pm

1 stop29h 55m

$564

MontrealPorto

YUL - OPO

YULOPO

Montreal Pierre Elliott Trudeau Intl

dom. 3/15

8:05 pm-10:30 am

1 stop10h 25m

Porto

jue. 3/26

11:20 am-1:15 pm

1 stop29h 55m

$564

MontrealPorto

YUL - OPO

YULOPO

Montreal Pierre Elliott Trudeau Intl

lun. 3/16

8:10 pm-10:25 pm

1 stop22h 15m

Porto

jue. 3/26

11:20 am-4:20 pm

1 stop33h 00m

$570

MontrealPorto

YUL - OPO

YULOPO

Montreal Pierre Elliott Trudeau Intl

sáb. 3/7

9:05 pm-11:50 am

1 stop9h 45m

$269

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/28

Showing 1-10 of 18 results
1
2

Compare providers for flights from Pierre Elliott Trudeau Intl to Porto

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Pierre Elliott Trudeau Intl to Porto in October.
ProviderPrice AccuracyTrust Score*
FlightHubPrice Accuracy3 starsTrust Score*1 star
eDreamsPrice Accuracy3 starsTrust Score*3 stars
Trip.comPrice Accuracy2 starsTrust Score*3 stars
AranGrantPrice Accuracy2 starsTrust Score*3 stars
GotogatePrice Accuracy3 starsTrust Score*3 stars
SmartFaresPrice Accuracy1 starTrust Score*1 star

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Montreal Pierre Elliott Trudeau Intl Airport-Porto flights, users find the pricing of Gotogate to be most consistent on Cheapflights vs. Gotogate Users can find the same prices on Montreal Pierre Elliott Trudeau Intl Airport-Porto flight deals on Cheapflights vs. Gotogate >95% of the time. Price accuracy is based on data collected from Montreal Pierre Elliott Trudeau Intl Airport-Porto flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Montreal Pierre Elliott Trudeau Intl Airport-Porto flights, Cheapflights users trust Gotogate the most. Gotogate has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Montreal Pierre Elliott Trudeau Intl Airport-Porto flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Pierre Elliott Trudeau Intl to Porto

Have a flexible travel schedule? Discover the best time to fly to Porto from Pierre Elliott Trudeau Intl 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 Pierre Elliott Trudeau Intl Airport to Porto

How far ahead should I book a flight from Montreal Pierre Elliott Trudeau Intl Airport to Porto?

Use this chart to determine the optimal time to book a round-trip flight from Pierre Elliott Trudeau Intl to Porto. Price data was last updated on October 24, 2025.

The best time to book flights from Montreal Pierre Elliott Trudeau Intl Airport to Porto is 74 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

What is the cheapest month to book a flight from Montreal Pierre Elliott Trudeau Intl Airport to Porto?

Currently, February is the cheapest month in which you can book a flight from Montreal Pierre Elliott Trudeau Intl Airport to Porto (average of $308). Flying from Montreal Pierre Elliott Trudeau Intl Airport to Porto in July is currently the most expensive (average of $586). 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 YUL to OPO?

Find hourly flight availability from Pierre Elliott Trudeau Intl to Porto. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated octubre 29, 2025.

One of the essential ways to save on airfare from Montreal Pierre Elliott Trudeau Intl Airport to Porto is to remain as flexible as possible. Flights that are at noon tend to be the most expensive. A flight in the morning could potentially save you up to 28% on airfare.

How much does it cost to fly round-trip from Montreal Pierre Elliott Trudeau Intl Airport to Porto?

Reviews of airlines servicing Porto

Get insights into the airlines that provide service to Porto. 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 Porto. Reviews last updated octubre 29, 2025.
Peruse reviews from past customers who have flown with Porter Airlines, Air Transat, and TAP AIR PORTUGAL from Montreal Pierre Elliott Trudeau Intl Airport to Porto to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Porter Airlines
8.0
Very good
384 reviews

Entertainment

7.0

Comfort

8.0

Boarding

8.2

Overall

8.0

Crew

8.6

Food

7.6

Reviews

1 / 20
2.0
Mediocre

Anonymous,Sep 2025

YYZ - OPO

Very disappointing, booked with Porter airlines and changed to Air Transit last minute. Old plane, cramped seating, even the aisle was the narrowest I’ve ever seen. Very uncomfortable flight. Full meal at 130 am and only a small piece of banana bread in the morning… should be opposite.
Porter Airlines
8.0
Very good
384 reviews
Porter Airlines
8.0
Very good
384 reviews

Entertainment

7.0

Comfort

8.0

Boarding

8.2

Overall

8.0

Crew

8.6

Food

7.6

Reviews

1 / 20
2.0
Mediocre

Anonymous,Sep 2025

YYZ - OPO

Very disappointing, booked with Porter airlines and changed to Air Transit last minute. Old plane, cramped seating, even the aisle was the narrowest I’ve ever seen. Very uncomfortable flight. Full meal at 130 am and only a small piece of banana bread in the morning… should be opposite.
Air Transat
7.8
Good
469 reviews
Porter Airlines
8.0
Very good
384 reviews

Entertainment

7.0

Comfort

8.0

Boarding

8.2

Overall

8.0

Crew

8.6

Food

7.6

Reviews

1 / 20
2.0
Mediocre

Anonymous,Sep 2025

YYZ - OPO

Very disappointing, booked with Porter airlines and changed to Air Transit last minute. Old plane, cramped seating, even the aisle was the narrowest I’ve ever seen. Very uncomfortable flight. Full meal at 130 am and only a small piece of banana bread in the morning… should be opposite.
TAP AIR PORTUGAL
7.1
Good
2,035 reviews
Porter Airlines
8.0
Very good
384 reviews

Entertainment

7.0

Comfort

8.0

Boarding

8.2

Overall

8.0

Crew

8.6

Food

7.6

Reviews

1 / 20
2.0
Mediocre

Anonymous,Sep 2025

YYZ - OPO

Very disappointing, booked with Porter airlines and changed to Air Transit last minute. Old plane, cramped seating, even the aisle was the narrowest I’ve ever seen. Very uncomfortable flight. Full meal at 130 am and only a small piece of banana bread in the morning… should be opposite.
Lufthansa
6.8
Okay
7,538 reviews
Porter Airlines
8.0
Very good
384 reviews

Entertainment

7.0

Comfort

8.0

Boarding

8.2

Overall

8.0

Crew

8.6

Food

7.6

Reviews

1 / 20
2.0
Mediocre

Anonymous,Sep 2025

YYZ - OPO

Very disappointing, booked with Porter airlines and changed to Air Transit last minute. Old plane, cramped seating, even the aisle was the narrowest I’ve ever seen. Very uncomfortable flight. Full meal at 130 am and only a small piece of banana bread in the morning… should be opposite.

Related info for your journey

Find useful and relevant information for your journey from Pierre Elliott Trudeau Intl to Porto. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to Porto from Montreal Pierre Elliott Trudeau Intl?

    Most people fly into Porto (OPO) if they book a flight to Porto from Montreal Pierre Elliott Trudeau Intl. On average, Porto has 0 inbound flights from Montreal Pierre Elliott Trudeau Intl per day from 4 airlines. Porto is conveniently located just 6.8 mi from Porto’s city center.

  • How long is the flight from Montreal Pierre Elliott Trudeau Intl Airport to Porto?

    There are many flights that can get you from Montreal Pierre Elliott Trudeau Intl Airport to Porto in 12h 30m. Fly via KLM to get the fastest option. Airlines will cover a distance of 3189 mi.

  • What are the cheapest airlines flying from Montreal Pierre Elliott Trudeau Intl Airport to Porto round-trip?

    Currently priced at $437, TAP AIR PORTUGAL will fly you from Montreal Pierre Elliott Trudeau Intl Airport to Porto and back. In addition to TAP AIR PORTUGAL, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from Air Transat and Porter Airlines - these airlines can fly you to your destination from $526 and $557, respectively. You may be able to fly from Montreal Pierre Elliott Trudeau Intl Airport to Porto for 35% less than the average price by searching for these airlines.

  • What are the most reliable airlines from Montreal Pierre Elliott Trudeau Intl Airport to Porto?

    The top 3 most reliable airlines when flying from Montreal Pierre Elliott Trudeau Intl Airport to Porto are Air Canada (80%), United Airlines (80%) and Lufthansa (80%).

  • Can I find deals for flights from Pierre Elliott Trudeau Intl to Porto that include hotel bookings?

    Yes. In addition to deals on Pierre Elliott Trudeau Intl to Porto flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Pierre Elliott Trudeau Intl to Porto?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Pierre Elliott Trudeau Intl to Porto.

  • Can I find deals for business class flights from Pierre Elliott Trudeau Intl to Porto?

    Yes. Cheapflights offers flight deals from Pierre Elliott Trudeau Intl to Porto 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 Pierre Elliott Trudeau Intl Airport to Porto?

    Currently, February is the cheapest month in which you can book a flight from Montreal Pierre Elliott Trudeau Intl Airport to Porto (average of $308). Flying from Montreal Pierre Elliott Trudeau Intl Airport to Porto in July is currently the most expensive (average of $586). 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

Traveling to a place near Porto?

Book flights to Porto if you plan to visit one of these locations
Aveiro
Arcos de Valdevez
Coimbra

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Alternative routes for Pierre Elliott Trudeau Intl to Porto

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Top 4 airlines flying from Pierre Elliott Trudeau Intl to Porto

Discover the top 4 airlines that operate flights from Pierre Elliott Trudeau Intl to Porto. 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 2,558,603 searches. Data last updated octubre 29, 2025.
AirlineCheapestAverageFlexibilityOn-time
TAP AIR PORTUGALCheapest$437Average$708FlexibilityNo cancel feeOn-timeN/A
Air TransatCheapest$526Average$700FlexibilityNo cancel feeOn-time50%
Porter AirlinesCheapest$557Average$632FlexibilityNo cancel feeOn-time52%
LufthansaCheapest$569Average$890FlexibilityNo cancel feeOn-time76%

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