Cheap flights from the United Kingdom to Sylhet from £272

If you’re not able to fly to Sylhet in September, then February is your next best option. Flight prices from United Kingdom to Sylhet during February average around £811.

The cheapest day to depart on your flight to Sylhet is on a Thursday when prices can be found for as low as £856. This is often the case because there is less demand to fly during this day of the week. On the other hand, Monday is the most expensive day to depart from United Kingdom because it is more convenient for both business and leisure travellers. As a result, prices tend to be around £1,413.

Our data shows that the cheapest United Kingdom to Sylhet flights are usually those with departure times in the evening. Our users have found flights to Sylhet in the evening for as low as £851. Try not to purchase tickets in the afternoon because they tend to be around £901. Of course, these prices can vary depending on the time of year and what airport you fly to.

Fly from London Heathrow to Sylhet Osmani Intl for the best United Kingdom - Sylhet Osmani Intl flight prices

You are more likely to see cheaper flights to Sylhet from United Kingdom when booking weeks ahead of your departure date. In general, you can expect to find flights to Sylhet for around £931 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Sylhet from United Kingdom for as low as £851 on momondo.

There are 3 cabin classes available to choose from on United Kingdom to Sylhet Osmani Intl flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Historically, on average around 32% of flights between United Kingdom and Sylhet have experienced a delay on any given week. The average delay length over the past 12 months has been 151 minutes.

Generally, flights departing in the evening tend to experience fewer delays. Flights departing in the morning have, in the past, seen delays more frequently in comparison.

Monday is statistically the day of the week that experiences the fewest delays on this flight route. Sunday has historically seen more delays on average compared to the rest of the week.

According to our data, Biman Bangladesh have had the fewest delays on this route over the last 12 months, with about 32% of their flights experiencing any sort of delay.

The number of flights available between United Kingdom and Sylhet is 6 per week as of March 2026. The most frequent departure day is Sun, with 33% of weekly flights leaving on this day.

The average flight duration from United Kingdom to Sylhet depends on which airport you fly into and out of. Flying from London to Sylhet is 14h 15m on average, while flying from Manchester to Sylhet is 18h 50m on average. Sylhet is the most popular airport in Sylhet.