Question 1

What is the cheapest airline to fly from London to Sylhet round-trip?

Accepted Answer

Our cheapest airline available from London to Sylhet is Biman Bangladesh. Our recent data shows that you can find tickets from as low as £740 on this airline. Biman Bangladesh is 17% cheaper than the average price of flights available within the next 90 days to this destination.

Question 2

How far ahead should I book a flight from London to Sylhet?

Accepted Answer

To ensure you get the cheapest price possible for a flight from London to Sylhet, you should look to book at least 70 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

Question 3

What is the cheapest month to book a flight from London to Sylhet?

Accepted Answer

Currently, September is the cheapest month in which you can book a flight from London to Sylhet (average of £842). Flying from London to Sylhet in July is currently the most expensive (average of £1,376). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

Question 4

What is the cheapest day to fly from London to Sylhet?

Accepted Answer

Travellers seeking maximum savings on their London to Sylhet flight should consider departing on Friday mornings when fares are most often at their lowest. Tuesday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.

Question 5

E

Accepted Answer

In terms of precipitation, rainfall in Sylhet ranges from 8.0 - 812.0 inches per month. June is typically the wettest month, when rainfall can reach 812.0 mm. December is typically the driest time to visit Sylhet when rainfall is around 8.0 mm.

Question 6

E

Accepted Answer

If weather is an important factor for your trip to Sylhet, use this chart to help with planning. For those seeking warmer temperatures, August is the ideal time of year to visit, when temperatures reach an average of 28.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 18.0 C).

Question 7

What are the most popular routes from London to Sylhet?

Accepted Answer

When deciding which route to take from London to Sylhet consider London Heathrow - Sylhet Osmani Intl, London Gatwick - Sylhet Osmani Intl or London Stansted - Sylhet Osmani Intl as they are the most popular.

Question 8

What are the cheapest flights from London to Sylhet?

Accepted Answer

On average you can expect to pay £1,324 for a flight from London to Sylhet. The cheapest flight overall is £499 while the most popular route, (London Heathrow - Sylhet Osmani Intl) is currently priced at £680.

Question 9

What is the cheapest day to fly round-trip from London to Sylhet?

Accepted Answer

Monday flights are generally found to be more expensive for flights from London to Sylhet. This shouldn’t discourage you from searching, as you can still find great deals by being flexible with your options. Use our search form to find deals on tickets to Sylhet.

Question 10

How far in advance should I book a flight from London to Sylhet?

Accepted Answer

Travelers have found it’s best to book a flight 8 days in advance to save up to 3% compared to booking the same week of travel. As your travel date approaches, the cost of this flight route may potentially increase. While opting to book 8 days out may not be an option for all, there are still additional ways to secure a deal in the near future. You might find a flight from London to Sylhet 1-2 weeks in advance for as low as £787, or £810 for flights within the next 24 hours.

Question 11

What is the cheapest month to fly from London to Sylhet?

Accepted Answer

The best pricing can be found in the month of September. Prices to Sylhet from London average £895. You can even find prices in September for less than £895, as users have found deals to Sylhet from as low as £603. The month of December appears to be one of the more expensive times to travel to Sylhet from London. Flying in the targeted month can save you up to 42%.

Question 12

What is the cheapest time of day to fly from LON to ZYL?

Accepted Answer

It’s optimal to fly from London to Sylhet in the morning. By choosing this option you can save up to 34% on the cost of your flight, compared to a flight in the afternoon.

Question 13

What airport do you fly into for flights to Sylhet from London?

Accepted Answer

If you book a flight to Sylhet from London, you will be flying to Osmani Intl, which is the city’s only airport. Sylhet Osmani Intl (ZYL) is located 4.3 mi from the center of Sylhet. There are 0 flights from London to Osmani Intl per day from 1 airline.

Question 14

Can I find deals for flights from London to Sylhet that include hotel bookings?

Accepted Answer

Yes. In addition to deals on London to Sylhet flights, Cheapflights offers holiday packages that include both flights and hotel.

Question 15

How can I find direct flights from London to Sylhet?

Accepted Answer

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from London to Sylhet.

Question 16

Can I find deals for business class flights from London to Sylhet?

Accepted Answer

Yes. Cheapflights offers flight deals from London to Sylhet by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

Question 17

How does Cheapflights help users find flights from London to Sylhet?

Accepted Answer

When you search for this flight from London to Sylhet, Cheapflights searches on 900+ travel sites to save you time finding great flight deals online. Additionally, we offer filter features so you can choose a preferred cabin class or airline, see different price ranges, and much more so you can book the flight for you.

Question 18

Why should you use Cheapflights to find cheap flight tickets from London to Sylhet?

Accepted Answer

By finding flights from multiple airlines and providers at completely no cost, Cheapflights helps millions of users like you annually find the best flights to Sylhet from London.

Question 19

Can Cheapflights find flights from London to Sylhet with no change fees?

Accepted Answer

Certainly. Search results for flights to Sylhet from London shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

Question 20

Can Cheapflights notify me if prices for flights from London to Sylhet become cheaper?

Accepted Answer

Yes, Cheapflights offers price alerts on London to Sylhet flights so you can book your travel at the perfect time. Price Alerts can be enabled by clicking the bell icon next to the flight deals above and providing your email address where you want to receive the alerts.

Round-trip from	£740
One-way from	£321
Popular in	December
Cheapest in	September
Average price	£1,149
Good round-trip deal	£788 or less
Good one-way deal	£530 or less

Cheap flights from London to Sylhet from £321

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 18/8. Fares are subject to change and may not be available on all flights or dates of travel.

Cheapflights Tip: The best prices from London to Sylhet Osmani Intl are usually found in September or May, booked 70 days in advance, depart on a Wednesday or Sunday and return on a Tuesday

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Cheapest flights from London to SylhetExplore the most affordable flight options available from London to Sylhet. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 20 July 2025.

Explore the most affordable flight options available from London to Sylhet. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 20 July 2025.

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Best time to book a flight from London to Sylhet

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How far ahead should I book a flight from London to Sylhet?

Use this chart to determine the optimal time to book a return flight from London to Sylhet. Price data was last updated on 11 July 2025.

What is the cheapest month to book a flight from London to Sylhet?

What is the cheapest time of day to fly from LON to ZYL?

Find hourly flight availability from London to Sylhet. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 20 July 2025.

How much does it cost for a return flight from London to Sylhet?

Related info for your journey

Find useful and relevant information for your journey from London to Sylhet. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

What airport do you fly into for flights to Sylhet from London?

What is the cheapest airline to fly from London to Sylhet round-trip?

What are the most popular routes from London to Sylhet?

What are the cheapest flights from London to Sylhet?

Can I find deals for flights from London to Sylhet that include hotel bookings?

How can I find direct flights from London to Sylhet?

Can I find deals for business class flights from London to Sylhet?

What is the cheapest month to book a flight from London to Sylhet?

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Can Cheapflights find flights from London to Sylhet with no change fees?

Can Cheapflights notify me if prices for flights from London to Sylhet become cheaper?

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Cheapest flights from London to Sylhet
Explore the most affordable flight options available from London to Sylhet. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 20 July 2025.