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Cheap flights from London to Sylhet from £356

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 19/4. Fares are subject to change and may not be available on all flights or dates of travel.
LON — ZYL
27 Mar — 3 Apr1
1 adult

Cheapflights Tip: The best prices from London to Sylhet Osmani Intl are usually found in September or May, booked 17 days in advance, depart on a Sunday or Wednesday and return on a Tuesday

Cheap flight deals from London to Sylhet

Discover tips and strategies to find the most affordable flight options for your journey from London (LON) to Sylhet (ZYL). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 22 March 2025.

Round-trip from

£727

One-way from

£356

Popular in

December

Cheapest in

September

Average price

£823

Good round-trip deal

£753 or less

Good one-way deal

£508 or less
1/5-29/5
  • 1/5-29/5
  • 6 total stops
  • 87h 00m total
  • London to Sylhet
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19/4
  • 19/4
  • 2 total stops
  • 20h 35m total
  • London to Sylhet
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Highest demand for flights based on searches. 11% potential increase in price (£86 potential increase over avg. return price).
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Cheapest flight prices on average. 3% potential price decrease (£26 potential savings vs. average return price).
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Average for round-trip flights in March 2025
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Price to beat on a round-trip flight from London (LON) to Sylhet Osmani Intl.
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Price to beat on a one-way flight from London (LON) to Sylhet Osmani Intl.
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Find flight deals from London to Sylhet

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 22 March 2025.

Tue 6/505:30LGW - ZYL
2 stops34h 25mMultiple Airlines
Tue 20/512:00ZYL - LGW
2 stops33h 15mMultiple Airlines
Deal found 21/3£733
Tue 1/710:00LHR - ZYL
2 stops20h 50mMultiple Airlines
Wed 16/712:15ZYL - LHR
2 stops29h 25mMultiple Airlines
Deal found 21/3£737
Mon 5/506:10STN - ZYL
2 stops23h 50mMultiple Airlines
Sat 17/516:25ZYL - STN
3 stops25h 30mMultiple Airlines
Deal found 21/3£758
Fri 7/1118:15LHR - ZYL
Nonstop9h 45mBiman Bangladesh
Fri 5/1210:05ZYL - LHR
Nonstop12h 00mBiman Bangladesh
Deal found 21/3£766
Wed 3/908:30LCY - ZYL
2 stops21h 30mMultiple Airlines
Thu 16/1018:55ZYL - LCY
2 stops20h 10mMultiple Airlines
Deal found 21/3£1,092

Cheapflights Fare Finder

Customise your flight search to find flights from London to Sylhet that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 22 March 2025.
Use the filters below to find and compare flights from London to Sylhet that are best for you.

Fly from

London

Fly to

Sylhet

Route

Depart

Return

Price

LondonSylhet

LGW - ZYL

LGWZYL

London Gatwick

Tue 6/5

05:30-20:55

2 stops34h 25m

Sylhet Osmani Intl

Tue 20/5

12:00-16:15

2 stops33h 15m

£733

LondonSylhet

LHR - ZYL

LHRZYL

London Heathrow

Tue 1/7

10:00-11:50

2 stops20h 50m

Sylhet Osmani Intl

Wed 16/7

12:15-12:40

2 stops29h 25m

£737

LondonSylhet

STN - ZYL

STNZYL

London Stansted

Mon 5/5

06:10-11:00

2 stops23h 50m

Sylhet Osmani Intl

Sat 17/5

16:25-12:55

3 stops25h 30m

£758

LondonSylhet

LHR - ZYL

LHRZYL

London Heathrow

Fri 6/6

18:20-09:05

Nonstop9h 45m

Sylhet Osmani Intl

Sat 26/7

09:35-15:55

Nonstop11h 20m

£778

LondonSylhet

LCY - ZYL

LCYZYL

London City

Wed 3/9

08:30-11:00

2 stops21h 30m

Sylhet Osmani Intl

Thu 16/10

18:55-10:05

2 stops20h 10m

£1,092

LondonSylhet

LGW - ZYL

LGWZYL

London Gatwick

Sat 19/4

08:05-09:40

2 stops20h 35m

£356

LondonSylhet

STN - ZYL

STNZYL

London Stansted

Thu 22/5

14:30-11:50

3 stops40h 20m

£362

LondonSylhet

LHR - ZYL

LHRZYL

London Heathrow

Wed 14/5

20:50-17:55

2 stops16h 05m

£373

LondonSylhet

LCY - ZYL

LCYZYL

London City

Mon 31/3

16:50-19:45

3 stops45h 55m

£373

LondonSylhet

LHR - ZYL

LHRZYL

London Heathrow

Fri 18/4

18:20-09:05

Nonstop9h 45m

£530

Flights are sorted by cheapest return flights first.

Deals found on 21/3

Best time to book a flight from London to Sylhet

Have a flexible travel schedule? Discover the best time to fly to Sylhet from London with our price prediction graph.
Estimated return price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from London to Sylhet

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

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.

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 22 March 2025.

It’s optimal to fly from London to Sylhet in the morning. By choosing this option you can save up to 28% on the cost of your flight, compared to a flight at midday.

Rainfall in Sylhet by month

Plan your trip to Sylhet by taking into account the average rainfall totals by month.

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.

Temperature in Sylhet by month

Plan your trip to Sylhet by taking into account the average temperature totals by month.

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).

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?

    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.

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

    Our cheapest airline available from London to Sylhet is Biman Bangladesh. Our recent data shows that you can find tickets from as low as £772 on this airline. Biman Bangladesh is 13% cheaper than the average price of flights available within the next 90 days to this destination.

  • What are the most popular routes from London to Sylhet?

    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.

  • What are the cheapest flights from London to Sylhet?

    On average you can expect to pay £1,700 for a flight from London to Sylhet. The cheapest flight overall is £486 while the most popular route, (London Heathrow - Sylhet Osmani Intl) is currently priced at £737.

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

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

  • How can I find direct flights from London to Sylhet?

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

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

    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.

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

    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.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

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Fly from London to Sylhet on these airlines

Choose from the following airlines for your flight from London to Sylhet. Flights are based on user searches made on Cheapflights and were last updated on 22 March 2025.
Biman Bangladesh flights from London to Sylhet Osmani Intl

Top airline flying from London to Sylhet

Discover the top airline that operate flights from London to Sylhet. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 22 March 2025.
AirlineCheapestAverageFlexibilityOn-time
Biman BangladeshCheapest£645Average£949FlexibilityNo cancel feeOn-time45%
Search Biman Bangladesh flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

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

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.

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

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.

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

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.

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

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.

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