The cheapest month to fly to Haikou from United Kingdom is in November. Flight prices, which tend to average around £372, are often lower during this time because this is during the off-season. If you don’t want to visit Haikou in November, then you should wait until January to fly from United Kingdom, when ticket prices are also cheap, with an average price of £426.
The cheapest day to depart on your flight to Haikou is on a Sunday when prices can be found for as low as £509. This is often the case because there is less demand to fly during this day of the week. If your travel schedule is flexible, try to avoid departing on a Thursday because tickets tend to average around £661. These prices are subject to change though, so be sure to set up a Price Alert for flights to Haikou.