Cheap flights from London Heathrow Airport to Sylhet from £312
This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 8/11. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — ZYL
2 Nov — 9 Nov1
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 Saturday and return on a Thursday
Cheap flight deals from Heathrow to Sylhet
Enter your travel dates to find the best prices.
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Best
Direct
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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 3 October 2026.
Sat 10/1020:45 -
2 stops40h 25m
Wed 21/1007:55 -
2 stops32h 35m
Deal found 29/9£724
Wed 7/1009:45 -
2 stops29h 15m
Fri 23/1012:15 -
2 stops28h 15m
Deal found 1/10£725
Thu 12/1108:45 -
2 stops28h 45m
Thu 19/1112:10 -
2 stops38h 20m
Deal found 28/9£726
Sun 15/1109:30 -
2 stops24h 25m
Sun 22/1122:25 -
2 stops42h 40m
Deal found 1/10£728
Thu 15/1009:45 -
2 stops29h 15m
Thu 22/1010:05 -
2 stops30h 25m
Deal found 28/9£729
Tue 1/1208:45 -
2 stops45h 00m
Wed 16/1212:50 -
2 stops28h 40m
Deal found 28/9£730
Wed 7/1018:20 -
Nonstop9h 45m
Wed 21/1015:10 -
1 stop30h 55m
Deal found 30/9£731
Sat 31/1008:45 -
2 stops45h 00m
Sat 5/1222:00 -
2 stops43h 05m
Deal found 1/10£731
Tue 29/921:45 -
2 stops57h 05m
Mon 19/1012:15 -
2 stops24h 15m
Deal found 29/9£732
Wed 30/913:15 -
2 stops41h 35m
Wed 14/1012:15 -
2 stops36h 45m
Deal found 28/9£733
Sun 11/1021:05 -
2 stops41h 55m
Sun 8/1122:25 -
2 stops43h 05m
Deal found 29/9£734
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 3 October 2026.
Wed 4/1109:30 -
2 stops30h 05m
Wed 18/1110:00 -
2 stops31h 30m
Deal found 3/10£774
Sun 31/118:15 -
Nonstop9h 40m
Sun 28/210:25 -
Nonstop11h 40m
Deal found 29/9£862
Thu 12/1121:40 -
2 stops36h 15m
Thu 19/1108:15 -
1 stop16h 10m
Deal found 28/9£799
Wed 24/315:45 -
2 stops18h 10m
Wed 14/407:30 -
2 stops55h 30m
Deal found 2/10£865
Wed 14/1018:20 -
Nonstop9h 45m
Sat 7/1110:25 -
Nonstop11h 40m
Deal found 2/10£1,044
Fri 19/315:45 -
2 stops38h 00m
Mon 29/310:05 -
2 stops52h 55m
Deal found 28/9£896
Tue 10/1120:05 -
2 stops18h 35m
Tue 24/1108:15 -
1 stop16h 10m
Deal found 1/10£923
Sat 20/318:10 -
2 stops45h 25m
Fri 2/407:30 -
2 stops36h 15m
Deal found 29/9£926
Wed 6/115:45 -
2 stops18h 10m
Wed 3/221:05 -
2 stops41h 55m
Deal found 2/10£983
Sun 10/115:45 -
2 stops18h 45m
Mon 1/212:10 -
2 stops31h 35m
Deal found 30/9£986
Fri 27/1106:00 -
3 stops19h 30m
Sat 12/1208:15 -
2 stops28h 20m
Deal found 2/10£991
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 3 October 2026.
Wed 10/318:15 -
Nonstop9h 40m
Fri 30/409:35 -
Nonstop11h 20m
Deal found 30/9£838
Sun 7/318:15 -
Nonstop9h 40m
Wed 10/310:25 -
Nonstop11h 40m
Deal found 29/9£840
Sun 31/118:15 -
Nonstop9h 40m
Sun 28/210:25 -
Nonstop11h 40m
Deal found 30/9£849
Fri 12/218:15 -
Nonstop9h 40m
Sun 9/509:35 -
Nonstop11h 20m
Deal found 30/9£865
Fri 5/218:15 -
Nonstop9h 40m
Sat 27/210:25 -
Nonstop11h 40m
Deal found 2/10£872
Sun 7/218:15 -
Nonstop9h 40m
Sun 28/210:25 -
Nonstop11h 40m
Deal found 2/10£878
Last-minute flights from Heathrow to Sylhet
Discover last-minute flight deals from Heathrow to Sylhet. Data last updated 3 October 2026 and is based on user searches.
Tue 6/1013:15 -
2 stops41h 35m
Tue 13/1007:50 -
2 stops31h 25m
Deal found 28/9£735
Wed 7/1009:45 -
2 stops29h 15m
Fri 23/1012:15 -
2 stops28h 15m
Deal found 1/10£725
Wed 7/1018:20 -
Nonstop9h 45m
Wed 21/1015:10 -
1 stop30h 55m
Deal found 30/9£731
Fri 9/1009:45 -
2 stops45h 05m
Sat 7/1112:10 -
2 stops29h 20m
Deal found 29/9£733
Sat 10/1020:45 -
2 stops40h 25m
Wed 21/1007:55 -
2 stops32h 35m
Deal found 29/9£724
Sun 11/1021:05 -
2 stops41h 55m
Sun 8/1122:25 -
2 stops43h 05m
Deal found 29/9£734
Thu 15/1009:45 -
2 stops29h 15m
Thu 22/1010:05 -
2 stops30h 25m
Deal found 28/9£729
Thu 15/1009:45 -
2 stops29h 15m
Sun 15/1112:50 -
2 stops36h 30m
Deal found 30/9£732
Sat 31/1008:45 -
2 stops45h 00m
Sat 5/1222:00 -
2 stops43h 05m
Deal found 1/10£731
Thu 12/1108:45 -
2 stops28h 45m
Thu 19/1112:10 -
2 stops38h 20m
Deal found 28/9£726
Sun 15/1109:30 -
2 stops24h 25m
Sun 22/1122:25 -
2 stops42h 40m
Deal found 1/10£728
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 3 October 2026.
Sun 8/1108:25 -
2 stops29h 05m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 1/10£312
Sun 10/108:25 -
2 stops29h 05m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 1/10£340
Mon 23/1121:40 -
2 stops36h 15m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 2/10£362
Thu 29/1013:55 -
2 stops44h 00m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 2/10£369
Thu 8/1013:50 -
3 stops23h 00m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 30/9£374
Mon 1/221:40 -
2 stops34h 30m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 28/9£385
Wed 13/113:30 -
2 stops26h 05m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 30/9£387
Sun 11/1021:05 -
2 stops41h 55m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 1/10£394
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 3 October 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 3 October 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
LondonSylhet
LHR London Heathrow - ZYL Sylhet Osmani Intl
LHRZYL
London Heathrow
Mon 23/11
21:40-15:55
2 stops36h 15m
Sylhet Osmani Intl
Wed 31/12
00:00-19:00
Nonstop0h 00m
£362
LondonSylhet
LHR London Heathrow - ZYL Sylhet Osmani Intl
LHRZYL
London Heathrow
Mon 1/2
21:40-14:10
2 stops34h 30m
Sylhet Osmani Intl
Wed 31/12
00:00-19:00
Nonstop0h 00m
£385
Fastest return journey
LondonSylhet
LHR London Heathrow - ZYL Sylhet Osmani Intl
LHRZYL
London Heathrow
Sun 8/11
08:25-07:30
1 stop17h 05m
Sylhet Osmani Intl
Wed 31/12
00:00-19:00
Nonstop0h 00m
£399
LondonSylhet
LHR London Heathrow - ZYL Sylhet Osmani Intl
LHRZYL
London Heathrow
Sat 14/11
06:30-11:45
3 stops23h 15m
Sylhet Osmani Intl
Wed 31/12
00:00-19:00
Nonstop0h 00m
£414
LondonSylhet
LHR London Heathrow - ZYL Sylhet Osmani Intl
LHRZYL
London Heathrow
Sat 12/12
06:25-08:05
3 stops19h 40m
Sylhet Osmani Intl
Wed 31/12
00:00-19:00
Nonstop0h 00m
£443
LondonSylhet
LHR London Heathrow - ZYL Sylhet Osmani Intl
LHRZYL
London Heathrow
Thu 29/10
08:40-21:35
3 stops30h 55m
Sylhet Osmani Intl
Wed 31/12
00:00-19:00
Nonstop0h 00m
£466
LondonSylhet
LHR London Heathrow - ZYL Sylhet Osmani Intl
LHRZYL
London Heathrow
Wed 4/11
09:30-21:35
2 stops30h 05m
Sylhet Osmani Intl
Wed 18/11
10:00-11:30
2 stops31h 30m
£774
LondonSylhet
LHR London Heathrow - ZYL Sylhet Osmani Intl
LHRZYL
London Heathrow
Thu 12/11
21:40-15:55
2 stops36h 15m
Sylhet Osmani Intl
Thu 19/11
08:15-18:25
1 stop16h 10m
£799
LondonSylhet
LHR London Heathrow - ZYL Sylhet Osmani Intl
LHRZYL
London Heathrow
Sun 31/1
18:15-09:55
Nonstop9h 40m
Sylhet Osmani Intl
Sun 28/2
10:25-16:05
Nonstop11h 40m
£862
LondonSylhet
LHR London Heathrow - ZYL Sylhet Osmani Intl
LHRZYL
London Heathrow
Wed 24/3
15:45-15:55
2 stops18h 10m
Sylhet Osmani Intl
Wed 14/4
07:30-10:00
2 stops55h 30m
£865
Flights are sorted by cheapest return flights first.
Deals found on 2/10
Showing 1-10 of 17 resultsSorted by cheapest first
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2
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 £791). Flying from London Heathrow Airport to Sylhet in December is currently the most expensive (average of £1,427). 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 3 October 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 £767 and £958 in October.The cheapest return price found within the last 5 days was £725 on Multiple Airlines (28 Oct–25 Nov).
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 197 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 3 October 2026.
Read through reviews of airlines operating flights from London Heathrow Airport to Sylhet, such as Lufthansa and Biman Bangladesh. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
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Related info for your journey
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 2 different airlines.
How long is the flight from London Heathrow Airport to Sylhet?
Airlines like Air India and Biman Bangladesh fly from London Heathrow Airport to Sylhet in about 9h 40m. The time it takes to get you to your destination can typically vary by up to 35h 20m. Airlines will cover a distance of 4979 mi. This flight may include one or multiple stops.
What are the cheapest airlines flying from London Heathrow Airport to Sylhet round-trip?
Currently priced at £683, Lufthansa will fly you from London Heathrow Airport to Sylhet and back. In addition to Lufthansa, many other airlines offer competitively priced options for your trip. Check Cheapflights for deals on Biman Bangladesh for as low as £703. Lufthansa 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 £1,438, our data indicates the cheapest price to be £472. 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, September is the cheapest month in which you can book a flight from London Heathrow Airport to Sylhet (average of £791). Flying from London Heathrow Airport to Sylhet in December is currently the most expensive (average of £1,427). 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
Toggle through the tabs below to find thousands of 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 3 October 2026.
Explore flights to Sylhet departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on 3 October 2026.
Discover the top 2 airlines 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 3 October 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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