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Flights from Castries to Montreal

Search cheap flights from Castries to Montreal in the next 3 months. Based on Trip.com's latest 7-day data, one-way fares start at US$302, and round-trip tickets start at US$601.

      • UVF 15:05
        28h 22m
        1 stop
        YUL 19:27
        Castries - Montreal | Sat, Aug 15 | Air Canada
        YUL 06:00
        8h 20m
        1 stop
        UVF 14:20
        Montreal - Castries | Sat, Aug 22 | Air Canada
        US$601 US$2,316
        74% off
        74% off
        US$2,316 US$601
      • UVF 14:13
        25h 16m
        1 stop
        YUL 15:29
        Castries - Montreal | Sun, Aug 30 | American Airlines
        YUL 07:29
        31h
        1 stop
        UVF 14:29
        Montreal - Castries | Sun, Sep 6 | American Airlines
        US$1,232 US$2,316
        47% off
        47% off
        US$2,316 US$1,232
      • UVF 14:35
        17h 3m
        1 stop
        YUL 07:38
        Castries - Montreal | Sun, Aug 30 | United Airlines
        YUL 06:00
        7h 31m
        1 stop
        UVF 13:31
        Montreal - Castries | Sun, Sep 6 | United Airlines
        US$2,177 US$2,316
        6% off
        6% off
        US$2,316 US$2,177
      • SLU 13:00
        17h 25m
        1 stop
        YMQ 14:00
        Castries - Montreal | Sat, Jul 18 | Normal Airline
        YMQ 15:00
        6h
        Nonstop
        SLU 16:00
        Montreal - Castries | Mon, Jul 20 | Normal Airline
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      • UVF 15:05
        9h 27m
        1 stop
        YUL 00:32
        Castries - Montreal | Tue, Aug 4 | Air Canada
        US$302 US$1,108
        73% off
        73% off
        US$1,108 US$302
      • UVF 15:15
        9h 17m
        1 stop
        YUL 00:32
        Castries - Montreal | Tue, Sep 1 | Air Canada
        US$324 US$1,108
        71% off
        71% off
        US$1,108 US$324
      • UVF 15:05
        17h 15m
        1 stop
        YUL 08:20
        Castries - Montreal | Fri, Jul 17 | Air Canada
        US$448 US$1,108
        60% off
        60% off
        US$1,108 US$448
      • UVF 14:30
        26h 50m
        1 stop
        YUL 17:20
        Castries - Montreal | Thu, Jul 30 | WestJet
        US$469
        57% off
        US$1,108 US$469
      • UVF 16:40
        21h 28m
        1 stop
        YUL 14:08
        Castries - Montreal | Fri, Jul 17 | Jetblue Airways
        US$479
        56% off
        US$1,108 US$479
      • UVF 14:30
        26h 15m
        1 stop
        YUL 16:45
        Castries - Montreal | Sun, Jul 19 | WestJet
        US$580
        48% off
        US$1,108 US$580
      • UVF 16:40
        26h 38m
        1 stop
        YUL 19:18
        Castries - Montreal | Mon, Jul 27 | Jetblue Airways
        US$614
        45% off
        US$1,108 US$614
      • UVF 15:15
        10h 37m
        1 stop
        YUL 01:52
        Castries - Montreal | Fri, Aug 7 | Air Canada
        US$684
        38% off
        US$1,108 US$684
      • UVF 14:30
        9h 55m
        1 stop
        YUL 00:25
        Castries - Montreal | Sun, Aug 16 | WestJet
        US$688
        38% off
        US$1,108 US$688
      • UVF 15:33
        26h 9m
        1 stop
        YUL 17:42
        Castries - Montreal | Sun, Jul 19 | Delta Air Lines
        US$1,041
        6% off
        US$1,108 US$1,041
      • SLU 13:00
        17h 25m
        1 stop
        YMQ 14:00
        Castries - Montreal | Sat, Jul 18 | Normal Airline
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Castries to Montreal Flight Details

The distance between Castries and Montreal is about 3,696.45 km. Based on Trip.com's latest data, travel demand is highest in August. The off-season for travel is September.

Cheapest one-way flight priceUS$302
Cheapest return ticket priceUS$601
Cheapest monthSeptember
Peak season for travelAugust
Flight distance3,696.45 km
Flight statistics for the Castries–Montreal route are based on aggregated booking data from Trip.com over the past 12 months.

Frequently Asked Questions

  • What are the cheapest flights from Castries to Montreal (SLU-YMQ)?

    Based on Trip.com data, Air Canada offers one-way fares as low as US$302 on Cheapest nonstop routes (e.g. UVF to YUL on Tue, Aug 4), while Air Canada offers Cheapest nonstop round-trips from US$601 departing on Sat, Aug 15 and returning on Sat, Aug 22.
  • By analyzing data from all airlines on the Trip.com flight calendar, it looks like the best time to book a flight from Castries 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 Castries 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 Tue, Aug 4, with one-way flights priced at just US$302.
    · Compare airlines strategically. Budget carriers often provide the lowest base fares, while we found the most affordable airline currently operating on this route is Air Canada.
    · 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 August.
    · Get exclusive promo codes for Trip.com app users.
  • The cheapest months to fly from Castries to Montreal is September, when demand for travel is lower.
  • After crunching the numbers on our July flight calendar, it's currently cheapest to fly from Castries to Montreal on July 31, 2026 with Air Canada, with prices starting at US$601.
  • The time difference between Montreal and Castries is 1h.
  • 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.

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Note: Prices shown on this page are the estimated lowest prices found in the last 24 hours and include all taxes and fees.

Book with no extra fees

Prices displayed on this page are all-inclusive (incl. taxes, fuel surcharges, Civil Aviation Development Fund, etc.), and all fees are clearly shown before you pay. Charges for checked baggage, onboard meals, Wi‑Fi, and other optional services are also included where applicable in the flight cards.

Real-time pricing updates

Prices, availability, and travel details on this page have been updated within the last 24 hours, and for many routes are refreshed in real time. The more popular the route, the more accurate and up-to-date the data.

Change & Cancellation Policy

Trip.com shows the change and cancellation rules for each ticket during the booking process, including all related fees and conditions. Please refer to the following scenarios:
Voluntary cancellation/change:
To request a change or cancellation, go to the flight bookings page, select the option to change or cancel your booking, choose the relevant passengers and flight segment, and submit your request. Please note that additional charges may apply based on the airline’s fare rules.
Cancellation/change due to a flight schedule change:
If your flight has been rescheduled and you would like to change or cancel your ticket, you can submit an involuntary cancellation request. For full details of change and cancellation policies, please refer to the customer support pages.