Cheap flights from London Heathrow Airport to Sylhet from £370
This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 15/11. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — ZYL
15 Oct — 22 Oct1
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 February, booked 47 days in advance, depart on a Thursday or Wednesday and return on a Wednesday
Cheap flight deals from Heathrow to Sylhet
Enter your travel dates to find the best prices.
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Best
Direct
Last-minute
One-way
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 15 September 2026.
Wed 23/918:20 -
Nonstop9h 45m
Wed 7/1012:15 -
1 stop33h 50m
Deal found 10/9£685
Thu 1/1019:40 -
Nonstop9h 45m
Sat 10/1009:35 -
Nonstop11h 20m
Deal found 11/9£686
Sat 19/909:30 -
2 stops21h 20m
Sat 3/1010:05 -
2 stops25h 55m
Deal found 14/9£690
Fri 25/918:20 -
Nonstop9h 45m
Wed 21/1015:10 -
1 stop30h 55m
Deal found 10/9£694
Sun 27/918:20 -
Nonstop9h 45m
Wed 7/1020:25 -
1 stop25h 40m
Deal found 14/9£696
Sat 19/909:30 -
2 stops21h 20m
Sun 4/1012:50 -
2 stops23h 10m
Deal found 10/9£698
Sun 11/1018:35 -
3 stops32h 00m
Sun 8/1112:10 -
3 stops28h 55m
Deal found 10/9£701
Fri 25/909:30 -
2 stops25h 30m
Sat 24/1014:20 -
2 stops22h 20m
Deal found 14/9£704
Sun 11/1020:55 -
3 stops29h 40m
Sun 18/1010:05 -
3 stops25h 50m
Deal found 11/9£705
Sat 19/918:20 -
Nonstop9h 45m
Sat 26/909:35 -
Nonstop11h 20m
Deal found 13/9£705
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 15 September 2026.
Fri 5/208:45 -
2 stops30h 50m
Sun 14/312:10 -
2 stops29h 20m
Deal found 10/9£745
Mon 28/909:30 -
2 stops23h 20m
Sun 11/1012:15 -
3 stops27h 00m
Deal found 11/9£748
Wed 3/313:30 -
2 stops26h 10m
Wed 31/307:30 -
2 stops41h 30m
Deal found 10/9£758
Sat 6/221:40 -
2 stops32h 05m
Sun 7/312:10 -
2 stops24h 25m
Deal found 14/9£786
Wed 14/1008:25 -
2 stops30h 35m
Sat 7/1116:20 -
2 stops27h 40m
Deal found 13/9£804
Sun 3/113:00 -
2 stops26h 35m
Sun 7/212:10 -
2 stops29h 20m
Deal found 10/9£822
Wed 14/1016:00 -
2 stops23h 00m
Fri 6/1113:55 -
2 stops23h 05m
Deal found 15/9£823
Wed 21/1009:30 -
2 stops24h 15m
Wed 28/1012:50 -
2 stops25h 10m
Deal found 13/9£842
Wed 21/1009:30 -
2 stops24h 15m
Sat 14/1110:55 -
2 stops25h 25m
Deal found 15/9£851
Wed 21/1009:30 -
2 stops24h 15m
Fri 13/1113:55 -
2 stops22h 30m
Deal found 13/9£853
Fri 23/1009:30 -
2 stops29h 30m
Fri 6/1113:55 -
2 stops23h 05m
Deal found 13/9£865
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 15 September 2026.
Thu 1/1019:40 -
Nonstop9h 45m
Sat 10/1009:35 -
Nonstop11h 20m
Deal found 11/9£686
Fri 25/918:20 -
Nonstop9h 45m
Sat 10/1009:35 -
Nonstop11h 20m
Deal found 11/9£708
Wed 30/918:20 -
Nonstop9h 45m
Sun 4/1009:35 -
Nonstop11h 20m
Deal found 12/9£712
Sun 4/1018:20 -
Nonstop9h 45m
Fri 9/1009:35 -
Nonstop11h 20m
Deal found 14/9£716
Sun 4/1018:20 -
Nonstop9h 45m
Sun 11/1009:35 -
Nonstop11h 20m
Deal found 11/9£753
Sun 27/918:20 -
Nonstop9h 45m
Wed 7/1009:35 -
Nonstop11h 20m
Deal found 14/9£765
Sun 27/918:20 -
Nonstop9h 45m
Sun 18/1009:35 -
Nonstop11h 20m
Deal found 14/9£767
Sun 27/918:20 -
Nonstop9h 45m
Fri 9/1009:35 -
Nonstop11h 20m
Deal found 11/9£770
Fri 25/918:20 -
Nonstop9h 45m
Sat 24/1009:35 -
Nonstop11h 20m
Deal found 14/9£771
Sun 4/1018:20 -
Nonstop9h 45m
Wed 14/1009:35 -
Nonstop11h 20m
Deal found 13/9£779
Last-minute flights from Heathrow to Sylhet
Discover last-minute flight deals from Heathrow to Sylhet. Data last updated 15 September 2026 and is based on user searches.
Sat 19/909:30 -
2 stops21h 20m
Sat 3/1010:05 -
2 stops25h 55m
Deal found 14/9£690
Sat 19/909:30 -
2 stops21h 20m
Sun 4/1012:50 -
2 stops23h 10m
Deal found 10/9£698
Sat 19/918:20 -
Nonstop9h 45m
Sat 26/909:35 -
Nonstop11h 20m
Deal found 13/9£705
Wed 23/918:20 -
Nonstop9h 45m
Wed 7/1012:15 -
1 stop33h 50m
Deal found 10/9£685
Fri 25/918:20 -
Nonstop9h 45m
Wed 21/1015:10 -
1 stop30h 55m
Deal found 10/9£694
Fri 25/909:30 -
2 stops25h 30m
Sat 24/1014:20 -
2 stops22h 20m
Deal found 14/9£704
Sun 27/918:20 -
Nonstop9h 45m
Wed 7/1020:25 -
1 stop25h 40m
Deal found 14/9£696
Thu 1/1019:40 -
Nonstop9h 45m
Sat 10/1009:35 -
Nonstop11h 20m
Deal found 11/9£686
Sun 11/1018:35 -
3 stops32h 00m
Sun 8/1112:10 -
3 stops28h 55m
Deal found 10/9£701
Sun 11/1020:55 -
3 stops29h 40m
Sun 18/1010:05 -
3 stops25h 50m
Deal found 11/9£705
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 15 September 2026.
Sun 15/1120:05 -
1 stop29h 25m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 10/9£370
Sun 1/1108:50 -
2 stops47h 30m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 14/9£371
Wed 23/910:00 -
2 stops29h 00m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 12/9£375
Mon 16/1108:25 -
1 stop17h 05m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 12/9£377
Sat 26/912:30 -
3 stops22h 30m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 11/9£379
Fri 27/1108:25 -
1 stop17h 05m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 13/9£379
Thu 8/1022:05 -
2 stops35h 40m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 14/9£380
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 15 September 2026.
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 7,457,451 searches. Data last updated 15 September 2026.
Use the filters below to find and compare flights from London Heathrow Airport to Sylhet that are best for you.
Fly from
Fly to
Route
Depart
Return
Price
Cheapest return flight
Fastest return journey
LondonSylhet
LHR London Heathrow - ZYL Sylhet Osmani Intl
LHRZYL
London Heathrow
Fri 27/11
08:25-07:30
1 stop17h 05m
Sylhet Osmani Intl
Wed 31/12
00:00-19:00
Nonstop0h 00m
£379
LondonSylhet
LHR London Heathrow - ZYL Sylhet Osmani Intl
LHRZYL
London Heathrow
Wed 2/12
06:00-07:30
2 stops19h 30m
Sylhet Osmani Intl
Wed 31/12
00:00-19:00
Nonstop0h 00m
£379
LondonSylhet
LHR London Heathrow - ZYL Sylhet Osmani Intl
LHRZYL
London Heathrow
Thu 8/10
22:05-14:45
2 stops35h 40m
Sylhet Osmani Intl
Wed 31/12
00:00-19:00
Nonstop0h 00m
£380
LondonSylhet
LHR London Heathrow - ZYL Sylhet Osmani Intl
LHRZYL
London Heathrow
Wed 23/9
12:30-16:00
3 stops22h 30m
Sylhet Osmani Intl
Wed 31/12
00:00-19:00
Nonstop0h 00m
£382
LondonSylhet
LHR London Heathrow - ZYL Sylhet Osmani Intl
LHRZYL
London Heathrow
Wed 18/11
08:25-07:30
1 stop17h 05m
Sylhet Osmani Intl
Wed 31/12
00:00-19:00
Nonstop0h 00m
£386
LondonSylhet
LHR London Heathrow - ZYL Sylhet Osmani Intl
LHRZYL
London Heathrow
Sat 9/1
21:40-15:55
2 stops36h 15m
Sylhet Osmani Intl
Wed 31/12
00:00-19:00
Nonstop0h 00m
£408
LondonSylhet
LHR London Heathrow - ZYL Sylhet Osmani Intl
LHRZYL
London Heathrow
Sat 14/11
21:40-11:45
2 stops32h 05m
Sylhet Osmani Intl
Wed 31/12
00:00-19:00
Nonstop0h 00m
£408
LondonSylhet
LHR London Heathrow - ZYL Sylhet Osmani Intl
LHRZYL
London Heathrow
Thu 3/12
09:30-15:55
2 stops48h 25m
Sylhet Osmani Intl
Wed 31/12
00:00-19:00
Nonstop0h 00m
£430
LondonSylhet
LHR London Heathrow - ZYL Sylhet Osmani Intl
LHRZYL
London Heathrow
Sat 21/11
21:40-21:10
2 stops17h 30m
Sylhet Osmani Intl
Wed 31/12
00:00-19:00
Nonstop0h 00m
£433
LondonSylhet
LHR London Heathrow - ZYL Sylhet Osmani Intl
LHRZYL
London Heathrow
Sat 7/11
06:30-11:45
3 stops23h 15m
Sylhet Osmani Intl
Wed 31/12
00:00-19:00
Nonstop0h 00m
£445
Flights are sorted by cheapest return flights first.
Deals found on 14/9
Showing 1-10 of 22 resultsSorted by cheapest first
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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.
LHR-ZYL
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?
To ensure you get the cheapest price possible for a flight from London Heathrow Airport to Sylhet, you should look to book at least 46 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, September is the cheapest month in which you can book a flight from London Heathrow Airport to Sylhet (average of £753). Flying from London Heathrow Airport to Sylhet in December is currently the most expensive (average of £1,416). 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 15 September 2026.
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 much does it cost for a return flight from London Heathrow Airport to Sylhet?
Airfare is below average for this route at the moment.
London Heathrow Airport to Sylhet flights typically cost between £697 and £817 in September.The cheapest return price found within the last 5 days was £685 on Biman Bangladesh (27 Sept–30 Sept).
How often are flights from London to Sylhet delayed?
About 27% of weekly flights between London and Sylhet have experienced delays in the past year, with the average delay time being 206 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 morning tend to experience delays more often.
What day of the week experiences the fewest flight delays on this route?
Saturday tends to have the lowest number of delays on this route, whereas Thursday 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 27% 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 15 September 2026.
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 £673, 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 29% 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 £1,425, our data indicates the cheapest price to be £322. The most popular route (London Heathrow - Sylhet Osmani Intl), is priced around £688.
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, September is the cheapest month in which you can book a flight from London Heathrow Airport to Sylhet (average of £753). Flying from London Heathrow Airport to Sylhet in December is currently the most expensive (average of £1,416). 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 15 September 2026.
Browse through other flights departing from Heathrow. Flights are based on user searches made on Cheapflights and were last updated on 15 September 2026.
Explore flights to Sylhet departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on 15 September 2026.
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 7,457,451 searches. Data last updated 15 September 2026.
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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