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Flights from Helsinki to Castries

Find flight deals from Helsinki to Castries for the next 3 months. Book one way flights from SGD 805 or round trip flights from SGD 1,265.

      • HEL 7:35 PM
        25h 35m
        1 stop
        UVF 3:10 PM
        Helsinki - Castries | Fri, Jan 16 | British Airways
        UVF 8:50 PM
        20h 10m
        1 stop
        HEL 11:00 PM
        Castries - Helsinki | Fri, Jan 23 | British Airways
        SGD 1,265 SGD 5,455
        77% OFF
        77% OFF
        SGD 5,455 SGD 1,265
      • HEL 7:35 PM
        25h 35m
        1 stop
        UVF 3:10 PM
        Helsinki - Castries | Tue, Jan 20 | British Airways
        UVF 8:50 PM
        20h 10m
        1 stop
        HEL 11:00 PM
        Castries - Helsinki | Tue, Jan 27 | British Airways
        SGD 1,341 SGD 5,455
        75% OFF
        75% OFF
        SGD 5,455 SGD 1,341
      • HEL 4:50 PM
        26h 56m
        1 stop
        UVF 1:46 PM
        Helsinki - Castries | Fri, Jan 16 | Finnair
        UVF 5:02 PM
        36h 8m
        1 stop
        HEL 11:10 AM
        Castries - Helsinki | Fri, Jan 23 | American Airlines
        SGD 1,450 SGD 5,455
        73% OFF
        73% OFF
        SGD 5,455 SGD 1,450
      • HEL 7:35 PM
        25h 30m
        1 stop
        UVF 3:05 PM
        Helsinki - Castries | Sun, Feb 1 | British Airways
        UVF 8:35 PM
        15h 50m
        1 stop
        HEL 6:25 PM
        Castries - Helsinki | Sat, Feb 7 | British Airways
        SGD 1,523
        72% OFF
        SGD 5,455 SGD 1,523
      • HEL 12:45 PM
        31h 1m
        1 stop
        UVF 1:46 PM
        Helsinki - Castries | Sat, Jan 31 | Finnair
        UVF 3:10 PM
        16h 45m
        1 stop
        HEL 1:55 PM
        Castries - Helsinki | Sat, Feb 7 | American Airlines
        SGD 1,534
        72% OFF
        SGD 5,455 SGD 1,534
      • HEL 7:35 PM
        25h 35m
        1 stop
        UVF 3:10 PM
        Helsinki - Castries | Fri, Jan 30 | British Airways
        UVF 8:35 PM
        15h 50m
        1 stop
        HEL 6:25 PM
        Castries - Helsinki | Sat, Feb 7 | British Airways
        SGD 1,588
        71% OFF
        SGD 5,455 SGD 1,588
      • HEL 7:35 PM
        25h 30m
        1 stop
        UVF 3:05 PM
        Helsinki - Castries | Sun, Jan 11 | British Airways
        UVF 8:35 PM
        18h 35m
        1 stop
        HEL 9:10 PM
        Castries - Helsinki | Sun, Jan 18 | British Airways
        SGD 1,657
        70% OFF
        SGD 5,455 SGD 1,657
      • HEL 7:35 PM
        25h 30m
        1 stop
        UVF 3:05 PM
        Helsinki - Castries | Thu, Dec 25 | British Airways
        UVF 10:05 PM
        18h 55m
        1 stop
        HEL 11:00 PM
        Castries - Helsinki | Mon, Dec 29 | British Airways
        SGD 3,523
        35% OFF
        SGD 5,455 SGD 3,523
      • HEL 7:35 PM
        25h 30m
        1 stop
        UVF 3:05 PM
        Helsinki - Castries | Sun, Dec 21 | British Airways
        UVF 10:05 PM
        17h 5m
        1 stop
        HEL 9:10 PM
        Castries - Helsinki | Thu, Dec 25 | British Airways
        SGD 3,717
        32% OFF
        SGD 5,455 SGD 3,717
      • HEL 7:35 PM
        25h 30m
        1 stop
        UVF 3:05 PM
        Helsinki - Castries | Thu, Dec 18 | British Airways
        UVF 10:05 PM
        18h 55m
        1 stop
        HEL 11:00 PM
        Castries - Helsinki | Mon, Dec 22 | British Airways
        SGD 4,910
        10% OFF
        SGD 5,455 SGD 4,910
      • HEL 1:00 PM
        17h 25m
        1 stop
        SLU Invalid Date
        Helsinki - Castries | Sat, Dec 13 | Normal Airline
        SLU 3:00 PM
        6h
        Nonstop
        HEL 4:00 PM
        Castries - Helsinki | Mon, Dec 15 | Normal Airline
        Find More Flights
        Find More Flights
      • HEL 7:35 PM
        25h 30m
        1 stop
        UVF 3:05 PM
        Helsinki - Castries | Wed, Jan 14 | British Airways
        SGD 805 SGD 1,565
        49% OFF
        49% OFF
        SGD 1,565 SGD 805
      • HEL 7:35 PM
        25h 30m
        1 stop
        UVF 3:05 PM
        Helsinki - Castries | Wed, Feb 4 | British Airways
        SGD 860 SGD 1,565
        45% OFF
        45% OFF
        SGD 1,565 SGD 860
      • HEL 7:35 PM
        25h 30m
        1 stop
        UVF 3:05 PM
        Helsinki - Castries | Sun, Jan 18 | British Airways
        SGD 863 SGD 1,565
        45% OFF
        45% OFF
        SGD 1,565 SGD 863
      • HEL 2:00 PM
        31h 5m
        1 stop
        UVF 3:05 PM
        Helsinki - Castries | Wed, Feb 4 | Finnair
        SGD 980
        37% OFF
        SGD 1,565 SGD 980
      • HEL 7:45 PM
        25h 20m
        1 stop
        UVF 3:05 PM
        Helsinki - Castries | Sun, Jan 18 | Ryanair
        SGD 1,020
        35% OFF
        SGD 1,565 SGD 1,020
      • HEL 4:40 PM
        28h 25m
        1 stop
        UVF 3:05 PM
        Helsinki - Castries | Sun, Jan 18 | Norwegian Air Sweden
        SGD 1,059
        32% OFF
        SGD 1,565 SGD 1,059
      • HEL 4:50 PM
        28h 53m
        1 stop
        UVF 3:43 PM
        Helsinki - Castries | Thu, Jan 8 | Finnair
        SGD 1,248
        20% OFF
        SGD 1,565 SGD 1,248
      • HEL 9:00 AM
        36h 5m
        1 stop
        UVF 3:05 PM
        Helsinki - Castries | Thu, Jan 8 | Norwegian Air Sweden
        SGD 1,363
        13% OFF
        SGD 1,565 SGD 1,363
      • HEL 12:45 PM
        31h 1m
        1 stop
        UVF 1:46 PM
        Helsinki - Castries | Wed, Jan 14 | Finnair
        SGD 1,378
        12% OFF
        SGD 1,565 SGD 1,378
      • HEL 7:35 PM
        25h 30m
        1 stop
        UVF 3:05 PM
        Helsinki - Castries | Thu, Jan 8 | British Airways
        SGD 1,408
        10% OFF
        SGD 1,565 SGD 1,408
      • HEL 1:00 PM
        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.

Flying from Helsinki to Castries

The distance between Helsinki and Castries is approximately 8,435.57 km. Based on Trip.com's data travel demand peaks in August. The off-season for travel is September.

Cheapest one-way flight priceSGD 805
Cheapest round-trip ticket priceSGD 1,265
Off-season for travelSeptember
Peak season for travelAugust
Flight distance8,435.57 km

When is the cheapest time to fly from Helsinki to Castries?

The cheapest time for Helsinki to Castries flights: Jan 11 to Jan 18 — one way flight prices from SGD 804.

Cheapest flights
From price
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  • 714
  • 1421
  • 2128

  • Jan

    284
  • 411
  • 1118
  • 1825

  • Feb

    251
  • 18
  • 815
  • 1522

  • Mar

    221
Displayed fare trends are based on Trip.com's aggregated average of the lowest flight prices from Helsinki to Castries, calculated over the upcoming 10 weeks.

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 SGD 805 on Cheapest nonstop routes (e.g. HEL to UVF on Wed, Jan 14), while British Airways offers Cheapest nonstop round-trips from SGD 1,265 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 SGD 805.
    · 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 SGD 3,716.
  • 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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