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Flights from Helsinki to Castries

Find the cheapest flight options from Helsinki to Castries over the next three months. Book one-way tickets from SAR 2,334 and round-trip tickets from SAR 3,669.

      • 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
        SAR 3,669 SAR 19,511
        81% OFF
        81% OFF
        SAR 19,511 SAR 3,669
      • 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
        SAR 3,890 SAR 19,511
        80% OFF
        80% OFF
        SAR 19,511 SAR 3,890
      • 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
        SAR 4,206 SAR 19,511
        78% OFF
        78% OFF
        SAR 19,511 SAR 4,206
      • 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
        SAR 4,418
        77% OFF
        SAR 19,511 SAR 4,418
      • 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
        SAR 4,450
        77% OFF
        SAR 19,511 SAR 4,450
      • 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
        SAR 4,608
        76% OFF
        SAR 19,511 SAR 4,608
      • 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
        SAR 4,807
        75% OFF
        SAR 19,511 SAR 4,807
      • 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
        SAR 10,219
        48% OFF
        SAR 19,511 SAR 10,219
      • 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
        SAR 10,784
        45% OFF
        SAR 19,511 SAR 10,784
      • 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
        SAR 14,243
        27% OFF
        SAR 19,511 SAR 14,243
      • HEL 13:00
        17h 25m
        1 stop
        SLU Invalid Date
        Helsinki - Castries | Sun, Dec 14 | Normal Airline
        SLU 15:00
        6h
        Direct
        HEL 16:00
        Castries - Helsinki | Tue, Dec 16 | 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
        SAR 2,334 SAR 5,595
        57% OFF
        57% OFF
        SAR 5,595 SAR 2,334
      • HEL 19:35
        25h 30m
        1 stop
        UVF 15:05
        Helsinki - Castries | Wed, Feb 4 | British Airways
        SAR 2,493 SAR 5,595
        55% OFF
        55% OFF
        SAR 5,595 SAR 2,493
      • HEL 19:35
        25h 30m
        1 stop
        UVF 15:05
        Helsinki - Castries | Sun, Jan 18 | British Airways
        SAR 2,503 SAR 5,595
        55% OFF
        55% OFF
        SAR 5,595 SAR 2,503
      • HEL 14:00
        31h 5m
        1 stop
        UVF 15:05
        Helsinki - Castries | Wed, Feb 4 | Finnair
        SAR 2,843
        49% OFF
        SAR 5,595 SAR 2,843
      • HEL 19:45
        25h 20m
        1 stop
        UVF 15:05
        Helsinki - Castries | Sun, Jan 18 | Ryanair
        SAR 2,959
        47% OFF
        SAR 5,595 SAR 2,959
      • HEL 16:40
        28h 25m
        1 stop
        UVF 15:05
        Helsinki - Castries | Sun, Jan 18 | Norwegian Air Sweden
        SAR 3,072
        45% OFF
        SAR 5,595 SAR 3,072
      • HEL 16:50
        28h 53m
        1 stop
        UVF 15:43
        Helsinki - Castries | Thu, Jan 8 | Finnair
        SAR 3,619
        35% OFF
        SAR 5,595 SAR 3,619
      • HEL 09:00
        36h 5m
        1 stop
        UVF 15:05
        Helsinki - Castries | Thu, Jan 8 | Norwegian Air Sweden
        SAR 3,954
        28% OFF
        SAR 5,595 SAR 3,954
      • HEL 12:45
        31h 1m
        1 stop
        UVF 13:46
        Helsinki - Castries | Wed, Jan 14 | Finnair
        SAR 3,996
        28% OFF
        SAR 5,595 SAR 3,996
      • HEL 19:35
        25h 30m
        1 stop
        UVF 15:05
        Helsinki - Castries | Thu, Jan 8 | British Airways
        SAR 4,084
        27% OFF
        SAR 5,595 SAR 4,084
      • HEL 13:00
        17h 25m
        1 stop
        SLU Invalid Date
        Helsinki - Castries | Sun, Dec 14 | 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.

Flight details for Helsinki to Castries

The distance between Helsinki and Castries is 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 priceSAR 2,334
Cheapest round-trip ticket priceSAR 3,669
Off-season for travelSeptember
Peak season for travelAugust
Flight distance8,435.57 km

Find the best 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 SAR 2,334.

Cheapest flights
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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.

Flight FAQs

  • 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 SAR 2,334 on Cheapest nonstop routes (e.g. HEL to UVF on Wed, Jan 14), while British Airways offers Cheapest nonstop round-trips from SAR 3,669 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 SAR 2,334.
    · 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 SAR 10,783.
  • 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.