Cheap flights from London Heathrow Airport to Sylhet from £441
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 20/1. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — ZYL
17 Jan — 24 Jan1
Return
1 adult
Economy
Return
1 adult, Economy, 0 bags
Cheapflights Tip: The best prices from London Heathrow to Sylhet Osmani Intl are usually found in September or May, booked 56 days in advance, depart on a Thursday or Sunday and return on a Monday
Cheap flight deals from Heathrow to Sylhet
Enter your travel dates to find the best prices.
Cheapest flights from Heathrow to Sylhet
Explore the most affordable flight options available from Heathrow to Sylhet. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 18 December 2025.
Sun 28/1215:30LHR - ZYL
2 stops24h 15mMultiple Airlines
Sun 5/412:15ZYL - LHR
3 stops35h 05mMultiple Airlines
Deal found 15/12£865
Thu 25/1218:55LHR - ZYL
2 stops20h 50mMultiple Airlines
Sun 15/212:15ZYL - LHR
2 stops24h 10mMultiple Airlines
Deal found 15/12£866
Thu 25/1215:30LHR - ZYL
2 stops24h 15mMultiple Airlines
Thu 22/110:55ZYL - LHR
2 stops25h 40mMultiple Airlines
Deal found 15/12£877
Thu 25/1214:15LHR - ZYL
2 stops25h 30mMultiple Airlines
Thu 15/122:10ZYL - LHR
2 stops30h 30mMultiple Airlines
Deal found 16/12£977
Tue 23/1218:55LHR - ZYL
2 stops20h 50mMultiple Airlines
Mon 19/112:50ZYL - LHR
2 stops23h 35mMultiple Airlines
Deal found 16/12£982
Sat 20/1208:40LHR - ZYL
3 stops30h 30mMultiple Airlines
Sat 27/1210:55ZYL - LHR
3 stops30h 10mMultiple Airlines
Deal found 15/12£997
Fri 26/1218:55LHR - ZYL
2 stops39h 30mMultiple Airlines
Thu 15/122:10ZYL - LHR
2 stops29h 45mMultiple Airlines
Deal found 16/12£1,004
Best flights from Heathrow to Sylhet
Discover carefully curated flight deals from Heathrow to Sylhet that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 18 December 2025.
Tue 13/119:20LHR - ZYL
2 stops20h 25mMultiple Airlines
Wed 11/212:15ZYL - LHR
2 stops24h 10mMultiple Airlines
Deal found 17/12£748
Sat 21/316:00LHR - ZYL
2 stops41h 30mMultiple Airlines
Fri 17/412:15ZYL - LHR
2 stops48h 15mMultiple Airlines
Deal found 16/12£769
Mon 26/114:55LHR - ZYL
2 stops24h 50mMultiple Airlines
Sun 8/210:55ZYL - LHR
2 stops26h 25mMultiple Airlines
Deal found 16/12£774
Wed 18/308:35LHR - ZYL
2 stops24h 55mMultiple Airlines
Fri 1/507:30ZYL - LHR
2 stops17h 55mMultiple Airlines
Deal found 16/12£774
Mon 26/119:20LHR - ZYL
2 stops20h 25mMultiple Airlines
Wed 25/215:55ZYL - LHR
2 stops27h 25mMultiple Airlines
Deal found 16/12£775
Tue 3/220:10LHR - ZYL
2 stops19h 35mMultiple Airlines
Tue 10/210:45ZYL - LHR
2 stops25h 30mMultiple Airlines
Deal found 16/12£775
Wed 28/118:55LHR - ZYL
2 stops20h 50mMultiple Airlines
Wed 25/222:10ZYL - LHR
2 stops27h 40mMultiple Airlines
Deal found 16/12£775
Sun 18/121:30LHR - ZYL
2 stops18h 15mMultiple Airlines
Thu 26/220:25ZYL - LHR
2 stops22h 55mMultiple Airlines
Deal found 16/12£775
Thu 8/108:35LHR - ZYL
2 stops31h 10mMultiple Airlines
Fri 13/222:10ZYL - LHR
2 stops30h 30mMultiple Airlines
Deal found 17/12£778
Thu 8/111:30LHR - ZYL
3 stops25h 50mMultiple Airlines
Thu 22/109:10ZYL - LHR
3 stops31h 55mMultiple Airlines
Deal found 16/12£779
Direct flights from Heathrow to Sylhet
Explore direct flight options from Heathrow to Sylhet based on user searches, and compare prices and availability for your desired travel dates. Data last updated 18 December 2025.
Fri 6/318:15LHR - ZYL
Nonstop9h 40mBiman Bangladesh
Fri 20/310:25ZYL - LHR
Nonstop11h 40mBiman Bangladesh
Deal found 17/12£762
Sat 21/218:15LHR - ZYL
Nonstop9h 40mBiman Bangladesh
Fri 20/310:25ZYL - LHR
Nonstop11h 40mBiman Bangladesh
Deal found 17/12£776
Wed 10/618:20LHR - ZYL
Nonstop9h 45mBiman Bangladesh
Wed 24/609:35ZYL - LHR
Nonstop11h 20mBiman Bangladesh
Deal found 15/12£787
Wed 10/618:20LHR - ZYL
Nonstop9h 45mBiman Bangladesh
Wed 17/609:35ZYL - LHR
Nonstop11h 20mBiman Bangladesh
Deal found 15/12£844
Fri 5/618:20LHR - ZYL
Nonstop9h 45mBiman Bangladesh
Sat 20/609:35ZYL - LHR
Nonstop11h 20mBiman Bangladesh
Deal found 15/12£852
Fri 22/518:20LHR - ZYL
Nonstop9h 45mBiman Bangladesh
Fri 5/609:35ZYL - LHR
Nonstop11h 20mBiman Bangladesh
Deal found 15/12£855
Fri 30/118:15LHR - ZYL
Nonstop9h 40mBiman Bangladesh
Sat 7/310:25ZYL - LHR
Nonstop11h 40mBiman Bangladesh
Deal found 17/12£863
Fri 15/518:20LHR - ZYL
Nonstop9h 45mBiman Bangladesh
Thu 11/610:45ZYL - LHR
Nonstop11h 20mBiman Bangladesh
Deal found 17/12£883
Fri 6/218:15LHR - ZYL
Nonstop9h 40mBiman Bangladesh
Wed 4/310:25ZYL - LHR
Nonstop11h 40mBiman Bangladesh
Deal found 15/12£888
Sun 17/518:20LHR - ZYL
Nonstop9h 45mBiman Bangladesh
Wed 10/609:35ZYL - LHR
Nonstop11h 20mBiman Bangladesh
Deal found 15/12£906
Fri 23/118:15LHR - ZYL
Nonstop9h 40mBiman Bangladesh
Wed 4/310:25ZYL - LHR
Nonstop11h 40mBiman Bangladesh
Deal found 15/12£933
Sat 24/118:15LHR - ZYL
Nonstop9h 40mBiman Bangladesh
Sat 28/210:25ZYL - LHR
Nonstop11h 40mBiman Bangladesh
Deal found 17/12£961
Last-minute flights from Heathrow to Sylhet
Discover last-minute flight deals from Heathrow to Sylhet. Data last updated 18 December 2025 and is based on user searches.
Tue 23/1218:55LHR - ZYL
2 stops20h 50mMultiple Airlines
Mon 19/112:50ZYL - LHR
2 stops23h 35mMultiple Airlines
Deal found 16/12£982
Wed 24/1214:55LHR - ZYL
2 stops24h 50mMultiple Airlines
Mon 29/1211:05ZYL - LHR
2 stops26h 15mMultiple Airlines
Deal found 16/12£1,129
Wed 24/1214:55LHR - ZYL
2 stops24h 50mMultiple Airlines
Sun 28/1210:55ZYL - LHR
2 stops25h 30mMultiple Airlines
Deal found 15/12£1,140
Thu 25/1218:55LHR - ZYL
2 stops20h 50mMultiple Airlines
Sun 15/212:15ZYL - LHR
2 stops24h 10mMultiple Airlines
Deal found 15/12£866
Thu 25/1215:30LHR - ZYL
2 stops24h 15mMultiple Airlines
Thu 22/110:55ZYL - LHR
2 stops25h 40mMultiple Airlines
Deal found 15/12£877
Thu 25/1214:15LHR - ZYL
2 stops25h 30mMultiple Airlines
Thu 15/122:10ZYL - LHR
2 stops30h 30mMultiple Airlines
Deal found 16/12£977
Fri 26/1218:55LHR - ZYL
2 stops39h 30mMultiple Airlines
Thu 15/122:10ZYL - LHR
2 stops29h 45mMultiple Airlines
Deal found 16/12£1,004
One-way flights from Heathrow to Sylhet
Search for one-way flight options from Heathrow to Sylhet. Find affordable one-way fares based on user searches. Data last updated 18 December 2025.
Tue 20/110:25LHR - ZYL
3 stops21h 55mMultiple Airlines
Deal found 17/12£441
Fri 16/116:00LHR - ZYL
2 stops23h 45mMultiple Airlines
Deal found 16/12£447
Fri 13/313:40LHR - ZYL
2 stops26h 05mMultiple Airlines
Deal found 16/12£451
Tue 6/111:30LHR - ZYL
3 stops27h 00mMultiple Airlines
Deal found 15/12£452
Wed 14/114:55LHR - ZYL
2 stops23h 05mMultiple Airlines
Deal found 16/12£501
Wed 7/115:30LHR - ZYL
2 stops24h 15mMultiple Airlines
Deal found 14/12£507
Wed 31/1215:30LHR - ZYL
2 stops24h 15mMultiple Airlines
Deal found 14/12£508
Sat 10/114:55LHR - ZYL
2 stops19h 30mMultiple Airlines
Deal found 14/12£534
Thu 25/1214:15LHR - ZYL
2 stops23h 15mMultiple Airlines
Deal found 16/12£536
Fri 2/122:00LHR - ZYL
2 stops32h 30mMultiple Airlines
Deal found 16/12£540
Wed 24/1215:30LHR - ZYL
2 stops24h 15mMultiple Airlines
Deal found 16/12£555
Find flight deals from Heathrow to Sylhet
Discover tips and strategies to find the most affordable flight options for your journey from Heathrow (LHR) 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 18 December 2025.
Customise your flight search to find flights from Heathrow 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 18 December 2025.
Use the filters below to find and compare flights from London Heathrow Airport to Sylhet that are best for you.
Fly from
Heathrow
Fly to
Sylhet
Route
Depart
Return
Price
LondonSylhet
LHR - ZYL
LHRZYL
London Heathrow
Tue 13/1
19:20-21:45
2 stops20h 25m
Sylhet Osmani Intl
Wed 11/2
12:15-06:25
2 stops24h 10m
£748
LondonSylhet
LHR - ZYL
LHRZYL
London Heathrow
Sat 21/3
16:00-15:30
2 stops41h 30m
Sylhet Osmani Intl
Fri 17/4
12:15-07:30
2 stops48h 15m
£769
LondonSylhet
LHR - ZYL
LHRZYL
London Heathrow
Mon 26/1
14:55-21:45
2 stops24h 50m
Sylhet Osmani Intl
Sun 8/2
10:55-07:20
2 stops26h 25m
£774
LondonSylhet
LHR - ZYL
LHRZYL
London Heathrow
Wed 18/3
08:35-15:30
2 stops24h 55m
Sylhet Osmani Intl
Fri 1/5
07:30-20:25
2 stops17h 55m
£774
LondonSylhet
LHR - ZYL
LHRZYL
London Heathrow
Mon 26/1
19:20-21:45
2 stops20h 25m
Sylhet Osmani Intl
Wed 25/2
15:55-13:20
2 stops27h 25m
£775
LondonSylhet
LHR - ZYL
LHRZYL
London Heathrow
Tue 3/2
20:10-21:45
2 stops19h 35m
Sylhet Osmani Intl
Tue 10/2
10:45-06:15
2 stops25h 30m
£775
LondonSylhet
LHR - ZYL
LHRZYL
London Heathrow
Wed 28/1
18:55-21:45
2 stops20h 50m
Sylhet Osmani Intl
Wed 25/2
22:10-19:50
2 stops27h 40m
£775
LondonSylhet
LHR - ZYL
LHRZYL
London Heathrow
Sun 18/1
21:30-21:45
2 stops18h 15m
Sylhet Osmani Intl
Thu 26/2
20:25-13:20
2 stops22h 55m
£775
LondonSylhet
LHR - ZYL
LHRZYL
London Heathrow
Thu 8/1
08:35-21:45
2 stops31h 10m
Sylhet Osmani Intl
Fri 13/2
22:10-22:40
2 stops30h 30m
£778
LondonSylhet
LHR - ZYL
LHRZYL
London Heathrow
Thu 8/1
11:30-19:20
3 stops25h 50m
Sylhet Osmani Intl
Thu 22/1
09:10-11:05
3 stops31h 55m
£779
Flights are sorted by cheapest return flights first.
Deals found on 17/12
Showing 1-10 of 19 results
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Best time to book a flight from Heathrow to Sylhet
Have a flexible travel schedule? Discover the best time to fly to Sylhet from Heathrow 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 Heathrow Airport to Sylhet
Prices
Delays
How far ahead should I book a flight from London Heathrow Airport to Sylhet?
Use this chart to determine the optimal time to book a return flight from Heathrow to Sylhet. Price data was last updated on 12 December 2025.
To ensure you get the cheapest price possible for a flight from London Heathrow Airport to Sylhet, you should look to book at least 56 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.
What is the cheapest month to book a flight from London Heathrow Airport to Sylhet?
Currently, April is the cheapest month in which you can book a flight from London Heathrow Airport to Sylhet (average of £630). Flying from London Heathrow Airport to Sylhet in December is currently the most expensive (average of £898). 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 LHR to ZYL?
Find hourly flight availability from Heathrow 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 18 December 2025.
Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from London Heathrow Airport to Sylhet as you normally would.
How often are flights from London to Sylhet delayed?
About 26% of weekly flights between London and Sylhet have experienced delays in the past year, with the average delay time being 181 minutes.
What is the most punctual flight time for London to Sylhet flights?
Historically, flights departing in the evening are less likely to be delayed, whereas flights leaving in the evening tend to experience delays more often.
What day of the week experiences the fewest flight delays on this route?
Monday tends to have the lowest number of delays on this route, whereas Wednesday has historically faced a higher average of delays compared to other days of the week.
Which airline has the best punctuality record on London to Sylhet flights?
Over the past year, Biman Bangladesh have had the lowest number of delays on this route, with just 26% of flights being delayed.
Reviews of airlines servicing Sylhet
Get insights into the airlines that provide service to Sylhet. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Sylhet. Reviews last updated 18 December 2025.
Read through reviews of airlines operating flights from London Heathrow Airport to Sylhet, such as Biman Bangladesh. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Find useful and relevant information for your journey from Heathrow 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 Heathrow?
Located just 4.3 mi from the city center, Sylhet Osmani Intl is the airport most travelers will use when flying to Sylhet from London Heathrow. Booking flights from London Heathrow to Osmani Intl (ZYL) should be relatively easy as there are 0 daily inbound flights from London Heathrow from 1 airline.
What is the cheapest airline to fly from London Heathrow Airport to Sylhet round-trip?
Currently priced at £664, Biman Bangladesh will fly you from London Heathrow Airport to Sylhet and back. In addition to Biman Bangladesh, many other airlines offer competitively priced options for your trip. Biman Bangladesh is priced at 27% lower than the current average price of a flight leaving 3 months from now.
What are the cheapest flights from London Heathrow Airport to Sylhet?
Looking for the cheapest flight from London Heathrow Airport to Sylhet? While on average our users pay £1,205, our data indicates the cheapest price to be £518. The most popular route (London Heathrow - Sylhet Osmani Intl), is priced around £665.
Can I find deals for business class flights from Heathrow to Sylhet?
Yes. Cheapflights offers flight deals from Heathrow 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 Heathrow Airport to Sylhet?
Currently, April is the cheapest month in which you can book a flight from London Heathrow Airport to Sylhet (average of £630). Flying from London Heathrow Airport to Sylhet in December is currently the most expensive (average of £898). 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.
Browse thousands of different options on Cheapflights for your next trip
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Fly from Heathrow to Sylhet on these airlines
Choose from the following airlines for your flight from Heathrow to Sylhet. Flights are based on user searches made on Cheapflights and were last updated on 18 December 2025.
Browse through other flights departing from Heathrow. Flights are based on user searches made on Cheapflights and were last updated on 18 December 2025.
Explore flights to Sylhet departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on 18 December 2025.
Discover the top airline that operate flights from Heathrow 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 18 December 2025.
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 Heathrow to Sylhet?
Cheapflights makes it easy to find Heathrow to Sylhet flights by helping our users search from 900+ travel sites for deals. We also provide you with filters for cabin, price, airline, airports, number of stops, and many more to narrow down that perfect flight.
Why should you use Cheapflights to find cheap flight tickets from Heathrow 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 Heathrow.
Can Cheapflights find flights from Heathrow to Sylhet with no change fees?
Yes! Cheapflights helps users easily find flights from Heathrow to Sylhet with no change fees.
Can Cheapflights notify me if prices for flights from Heathrow to Sylhet become cheaper?
Not ready to book yet? You can track prices for flights from Heathrow to Sylhet on Cheapflights with our Price Alert feature and get notified when better prices are available.
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