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Flights from Helsinki to Castries

Search cheap flights from Helsinki to Castries in the next 3 months. Based on Trip.com's latest 7-day data, one-way fares start at MXN11,307, and round-trip tickets start at MXN17,772.

      • HEL 19:35
        25h 35m
        1 stop
        UVF 15:10
        Helsinki - Castries | Fri, Jan 16 | British Airways
        UVF 20:50
        20h 10m
        1 stop
        HEL 23:00
        Castries - Helsinki | Fri, Jan 23 | British Airways
        MXN17,772 MXN76,662
        77% OFF
        77% OFF
        MXN76,662 MXN17,772
      • HEL 19:35
        25h 35m
        1 stop
        UVF 15:10
        Helsinki - Castries | Tue, Jan 20 | British Airways
        UVF 20:50
        20h 10m
        1 stop
        HEL 23:00
        Castries - Helsinki | Tue, Jan 27 | British Airways
        MXN18,841 MXN76,662
        75% OFF
        75% OFF
        MXN76,662 MXN18,841
      • HEL 16:50
        26h 56m
        1 stop
        UVF 13:46
        Helsinki - Castries | Fri, Jan 16 | Finnair
        UVF 17:02
        36h 8m
        1 stop
        HEL 11:10
        Castries - Helsinki | Fri, Jan 23 | American Airlines
        MXN20,371 MXN76,662
        73% OFF
        73% OFF
        MXN76,662 MXN20,371
      • HEL 19:35
        25h 30m
        1 stop
        UVF 15:05
        Helsinki - Castries | Sun, Feb 1 | British Airways
        UVF 20:35
        15h 50m
        1 stop
        HEL 18:25
        Castries - Helsinki | Sat, Feb 7 | British Airways
        MXN21,399
        72% OFF
        MXN76,662 MXN21,399
      • HEL 12:45
        31h 1m
        1 stop
        UVF 13:46
        Helsinki - Castries | Sat, Jan 31 | Finnair
        UVF 15:10
        16h 45m
        1 stop
        HEL 13:55
        Castries - Helsinki | Sat, Feb 7 | American Airlines
        MXN21,554
        72% OFF
        MXN76,662 MXN21,554
      • HEL 19:35
        25h 35m
        1 stop
        UVF 15:10
        Helsinki - Castries | Fri, Jan 30 | British Airways
        UVF 20:35
        15h 50m
        1 stop
        HEL 18:25
        Castries - Helsinki | Sat, Feb 7 | British Airways
        MXN22,319
        71% OFF
        MXN76,662 MXN22,319
      • HEL 19:35
        25h 30m
        1 stop
        UVF 15:05
        Helsinki - Castries | Sun, Jan 11 | British Airways
        UVF 20:35
        18h 35m
        1 stop
        HEL 21:10
        Castries - Helsinki | Sun, Jan 18 | British Airways
        MXN23,285
        70% OFF
        MXN76,662 MXN23,285
      • HEL 19:35
        25h 30m
        1 stop
        UVF 15:05
        Helsinki - Castries | Thu, Dec 25 | British Airways
        UVF 22:05
        18h 55m
        1 stop
        HEL 23:00
        Castries - Helsinki | Mon, Dec 29 | British Airways
        MXN49,501
        35% OFF
        MXN76,662 MXN49,501
      • HEL 19:35
        25h 30m
        1 stop
        UVF 15:05
        Helsinki - Castries | Sun, Dec 21 | British Airways
        UVF 22:05
        17h 5m
        1 stop
        HEL 21:10
        Castries - Helsinki | Thu, Dec 25 | British Airways
        MXN52,236
        32% OFF
        MXN76,662 MXN52,236
      • HEL 19:35
        25h 30m
        1 stop
        UVF 15:05
        Helsinki - Castries | Thu, Dec 18 | British Airways
        UVF 22:05
        18h 55m
        1 stop
        HEL 23:00
        Castries - Helsinki | Mon, Dec 22 | British Airways
        MXN68,996
        10% OFF
        MXN76,662 MXN68,996
      • HEL 13:00
        17h 25m
        1 stop
        SLU Invalid Date
        Helsinki - Castries | Sat, Dec 13 | Normal Airline
        SLU 15:00
        6h
        Nonstop
        HEL 16:00
        Castries - Helsinki | Mon, Dec 15 | Normal Airline
        Find More Flights
        Find More Flights
      • HEL 19:35
        25h 30m
        1 stop
        UVF 15:05
        Helsinki - Castries | Wed, Jan 14 | British Airways
        MXN11,307 MXN21,982
        49% OFF
        49% OFF
        MXN21,982 MXN11,307
      • HEL 19:35
        25h 30m
        1 stop
        UVF 15:05
        Helsinki - Castries | Wed, Feb 4 | British Airways
        MXN12,077 MXN21,982
        45% OFF
        45% OFF
        MXN21,982 MXN12,077
      • HEL 19:35
        25h 30m
        1 stop
        UVF 15:05
        Helsinki - Castries | Sun, Jan 18 | British Airways
        MXN12,126 MXN21,982
        45% OFF
        45% OFF
        MXN21,982 MXN12,126
      • HEL 14:00
        31h 5m
        1 stop
        UVF 15:05
        Helsinki - Castries | Wed, Feb 4 | Finnair
        MXN13,769
        37% OFF
        MXN21,982 MXN13,769
      • HEL 19:45
        25h 20m
        1 stop
        UVF 15:05
        Helsinki - Castries | Sun, Jan 18 | Ryanair
        MXN14,333
        35% OFF
        MXN21,982 MXN14,333
      • HEL 16:40
        28h 25m
        1 stop
        UVF 15:05
        Helsinki - Castries | Sun, Jan 18 | Norwegian Air Sweden
        MXN14,882
        32% OFF
        MXN21,982 MXN14,882
      • HEL 16:50
        28h 53m
        1 stop
        UVF 15:43
        Helsinki - Castries | Thu, Jan 8 | Finnair
        MXN17,530
        20% OFF
        MXN21,982 MXN17,530
      • HEL 09:00
        36h 5m
        1 stop
        UVF 15:05
        Helsinki - Castries | Thu, Jan 8 | Norwegian Air Sweden
        MXN19,150
        13% OFF
        MXN21,982 MXN19,150
      • HEL 12:45
        31h 1m
        1 stop
        UVF 13:46
        Helsinki - Castries | Wed, Jan 14 | Finnair
        MXN19,356
        12% OFF
        MXN21,982 MXN19,356
      • HEL 19:35
        25h 30m
        1 stop
        UVF 15:05
        Helsinki - Castries | Thu, Jan 8 | British Airways
        MXN19,784
        10% OFF
        MXN21,982 MXN19,784
      • HEL 13:00
        17h 25m
        1 stop
        SLU Invalid Date
        Helsinki - Castries | Sat, Dec 13 | Normal Airline
        Find More Flights
        Find More Flights

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

Helsinki to Castries Flight Details

The distance between Helsinki and Castries is about 8,435.57 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 priceMXN11,307
Cheapest return ticket priceMXN17,772
Cheapest monthSeptember
Peak season for travelAugust
Flight distance8,435.57 km

When is the cheapest time to book flights from Helsinki to Castries?

The cheapest time to fly from Helsinki to Castries: Jan 11 to Jan 18 — one-way prices start at MXN11,306.

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 Helsinki to Castries (HEL-SLU)?

    Based on Trip.com data, British Airways offers one-way fares as low as MXN11,307 on Cheapest nonstop routes (e.g. HEL to UVF on Wed, Jan 14), while British Airways offers Cheapest nonstop round-trips from MXN17,772 departing on Fri, Jan 16 and returning on Fri, Jan 23.
  • By analyzing data from all airlines on the Trip.com flight calendar, it looks like the best time to book a flight from Helsinki to Castries 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 Helsinki to Castries, 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 Wed, Jan 14, with one-way flights priced at just MXN11,307.
    · Compare airlines strategically. Budget carriers often provide the lowest base fares, while we found the most affordable airline currently operating on this route is British Airways.
    · 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 Castries travel is around August.
    · Get exclusive promo codes for Trip.com app users.
  • The cheapest months to fly from Helsinki to Castries is September, when demand for travel is lower.
  • After crunching the numbers on our December flight calendar, it's currently cheapest to fly from Helsinki to Castries on December 21, 2025 with British Airways, with prices starting at MXN52,235.
  • The time difference between Castries and Helsinki is 6h.
  • 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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