Cheap Flights from Castries to London from AU$ 496

Flight FAQs

• Which airlines offer the cheapest flights from Castries (SLU) to London (LON)?

  Based on Trip.com data, Jetblue Airways offers one-way fares as low as AU$ 496 on Cheapest nonstop routes (e.g. UVF to LGW on Tue, Jan 20), while Jetblue Airways offers Cheapest nonstop round-trips from AU$ 1,232 departing on Sat, Jan 31 and returning on Tue, Feb 3.

• How long is the flights from Castries (SLU) to London (LON)?

  It takes about 8 hours 15 minutes to fly from Castries (SLU) to London (LON).

• When is the best time to book flights from Castries to London?

  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 London 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.

• How can I find the best deals on flights from Castries to London?

  To find best deals on flights from Castries to London, 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, Jan 20, with one-way flights priced at just AU$ 496.
  · 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 London travel is around July.
  · Get exclusive promo codes for Trip.com app users.

• When is the best time to book a flight from Castries to London to get the best price?

  The cheapest months to fly from Castries to London is October, when demand for travel is lower.

• Which upcoming date is the cheapest for flights from Castries to London?

  After crunching the numbers on our December flight calendar, it's currently cheapest to fly from Castries to London on December 26, 2025 with British Airways, with prices starting at AU$ 1,441.

• What is the time difference between Castries and London?

  The time difference between London and Castries is 4h.

• How can I change or cancel my flight ticket from Castries to London?

  Tickets can only be changed or cancelled 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.