Search cheap flights from Portland to Montreal in the next 3 months. Based on Trip.com's latest 7-day data, one-way fares start at €174, and round-trip tickets start at €401.

Displayed flight fares from Portland to Montreal are based on average prices across airlines for the next 3 months, according to the latest Trip.com database.

Portland to Montreal Flight Details

The distance between Portland and Montreal is about 331.35 km. Based on Trip.com's latest data, travel demand is highest in July. The off-season for travel is September.

Cheapest one-way flight price€174
Cheapest return ticket price€401
Cheapest monthSeptember
Peak season for travelJuly
Flight distance331.35 km

When is the cheapest time to book flights from Portland to Montreal?

The cheapest time to fly from Portland to Montreal: Jan 11 to Jan 18 — one-way prices start at €169.

Cheapest flights
From price
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  • 714
  • 1421
  • 2128
  • Jan

    284
  • 411
  • 1118
  • 1825
  • Feb

    251
  • 18
  • 815
  • 1522
  • Mar

    221
Displayed prices are calculated based on the cheapest average weekly prices of the corresponding route on Trip.com.

Frequently Asked Questions

  • What are the cheapest flights from Portland to Montreal (PWM-YMQ)?

    Based on Trip.com data, Delta Air Lines offers one-way fares as low as €174 on Cheapest nonstop routes (e.g. PWM to YUL on Sat, Dec 13), while Delta Air Lines offers Cheapest nonstop round-trips from €401 departing on Wed, Dec 10 and returning on Wed, Dec 17.
  • By analyzing data from all airlines on the Trip.com flight calendar, it looks like the best time to book a flight from Portland to Montreal is around 40 days (6 weeks) in advance, and the best time to fly is usually on Tuesday, Wednesday, and Saturday. Tuesday typically offers the cheapest flights for departure, while Saturday offers the best return deals.
  • To find best deals on flights from Portland to Montreal, you can use various tools on Trip.com:
    · Be flexible with your travel dates to get the cheapest flight deal. Now the cheapest flight deal is on Sat, Dec 13, with one-way flights priced at just €174.
    · Compare airlines strategically. Budget carriers often provide the lowest base fares, while we found the most affordable airline currently operating on this route is Delta Air Lines.
    · Set up price alerts to easily monitor ticket prices without having to check every day.
    · Check Trip.com flight deals and promo codes frequently.
    · Avoid peak season unless you book very early. It seems the peak season for Montreal travel is around July.
    · Get exclusive promo codes for Trip.com app users.
  • The cheapest months to fly from Portland to Montreal is September, when demand for travel is lower.
  • After crunching the numbers on our December flight calendar, it's currently cheapest to fly from Portland to Montreal on December 10, 2025 with Delta Air Lines, with prices starting at €400.
  • The time difference between Montreal and Portland is 0h.
  • Tickets can only be changed or canceled if permitted by airline policy. To submit a change or cancellation request, go to the flight bookings page, select the option to change or cancel your booking, choose the relevant passengers and segment, and submit a request. Please note that additional charges may apply according to the airline ticket policy. However, if the flight has been rescheduled and you would like to change or cancel your ticket, you can submit an involuntary cancellation request. For more details about change and cancellation policies, please check the customer support pages.