Cheap flights from London Heathrow Airport to Sylhet from £415
This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 22/11. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — ZYL
14 Dec — 21 Dec1
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 April, booked 48 days in advance, depart on a Thursday or Monday and return on a Tuesday
Cheap flight deals from Heathrow to Sylhet
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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 14 November 2026.
Sun 6/1222:00 -
2 stops41h 35m
Sun 7/212:10 -
2 stops37h 10m
Deal found 13/11£737
Sun 6/1208:45 -
2 stops42h 10m
Sat 19/1212:10 -
2 stops29h 20m
Deal found 11/11£743
Wed 30/1213:30 -
2 stops20h 25m
Sat 30/108:40 -
2 stops40h 40m
Deal found 11/11£744
Fri 27/1113:30 -
2 stops26h 05m
Thu 10/1222:00 -
2 stops43h 05m
Deal found 14/11£745
Thu 24/1208:45 -
2 stops28h 45m
Thu 28/112:10 -
2 stops37h 10m
Deal found 10/11£746
Tue 17/1119:20 -
2 stops38h 35m
Mon 7/1211:05 -
2 stops37h 05m
Deal found 10/11£747
Thu 31/1208:45 -
2 stops30h 50m
Thu 4/209:25 -
2 stops31h 40m
Deal found 11/11£749
Sun 6/1208:45 -
2 stops30h 50m
Sun 13/1210:25 -
2 stops31h 05m
Deal found 13/11£752
Sun 29/1121:05 -
2 stops56h 40m
Wed 16/1210:00 -
2 stops31h 30m
Deal found 10/11£758
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 14 November 2026.
Sat 21/1113:45 -
2 stops20h 10m
Sat 28/1116:20 -
2 stops25h 55m
Deal found 9/11£816
Sat 21/1120:05 -
1 stop29h 25m
Mon 30/1108:15 -
1 stop16h 10m
Deal found 13/11£949
Sat 21/1120:05 -
1 stop29h 25m
Mon 14/1208:15 -
1 stop16h 10m
Deal found 12/11£952
Fri 20/1108:25 -
1 stop17h 05m
Mon 14/1208:15 -
1 stop16h 10m
Deal found 12/11£953
Sat 21/1120:05 -
1 stop29h 25m
Sat 5/1208:15 -
1 stop16h 10m
Deal found 9/11£960
Sat 21/1120:05 -
1 stop29h 25m
Thu 10/1208:15 -
1 stop16h 10m
Deal found 12/11£994
Fri 20/1108:25 -
1 stop17h 05m
Fri 18/1222:45 -
1 stop25h 40m
Deal found 12/11£994
Sun 22/1108:25 -
1 stop17h 05m
Thu 10/1208:15 -
1 stop27h 40m
Deal found 12/11£994
Mon 7/1220:05 -
1 stop29h 25m
Sat 26/1222:45 -
1 stop25h 40m
Deal found 10/11£1,030
Mon 23/1120:05 -
1 stop29h 25m
Wed 16/1222:45 -
1 stop25h 40m
Deal found 12/11£1,038
Mon 30/1120:05 -
1 stop29h 25m
Sat 5/1208:15 -
1 stop16h 10m
Deal found 9/11£1,115
Fri 27/1108:25 -
1 stop17h 05m
Thu 10/1208:15 -
1 stop16h 10m
Deal found 11/11£1,120
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 14 November 2026.
Sun 7/218:15 -
Nonstop9h 40m
Wed 10/310:25 -
Nonstop11h 40m
Deal found 13/11£859
Wed 27/118:15 -
Nonstop9h 40m
Wed 24/210:25 -
Nonstop11h 40m
Deal found 13/11£863
Sun 7/218:15 -
Nonstop9h 40m
Sun 28/210:25 -
Nonstop11h 40m
Deal found 9/11£869
Sun 31/118:15 -
Nonstop9h 40m
Sun 28/210:25 -
Nonstop11h 40m
Deal found 10/11£872
Sun 7/218:15 -
Nonstop9h 40m
Sun 21/210:25 -
Nonstop11h 40m
Deal found 10/11£903
Last-minute flights from Heathrow to Sylhet
Discover last-minute flight deals from Heathrow to Sylhet. Data last updated 14 November 2026 and is based on user searches.
Tue 17/1119:20 -
2 stops38h 35m
Mon 7/1211:05 -
2 stops37h 05m
Deal found 10/11£747
Fri 27/1113:30 -
2 stops26h 05m
Thu 10/1222:00 -
2 stops43h 05m
Deal found 14/11£745
Sun 29/1121:05 -
2 stops56h 40m
Wed 16/1210:00 -
2 stops31h 30m
Deal found 10/11£758
Sun 6/1222:00 -
2 stops41h 35m
Sun 7/212:10 -
2 stops37h 10m
Deal found 13/11£737
Sun 6/1221:05 -
2 stops56h 40m
Sat 19/1210:55 -
2 stops30h 35m
Deal found 11/11£752
Sun 6/1208:45 -
2 stops30h 50m
Sun 13/1210:25 -
2 stops31h 05m
Deal found 13/11£752
Thu 24/1208:45 -
2 stops28h 45m
Thu 28/112:10 -
2 stops37h 10m
Deal found 10/11£746
Wed 30/1213:30 -
2 stops20h 25m
Sat 30/108:40 -
2 stops40h 40m
Deal found 11/11£744
Thu 31/1208:45 -
2 stops30h 50m
Thu 4/209:25 -
2 stops31h 40m
Deal found 11/11£749
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 14 November 2026.
Sun 22/1120:55 -
2 stops30h 00m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 12/11£415
Fri 27/1113:30 -
2 stops26h 05m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 11/11£419
Tue 1/1220:55 -
2 stops30h 00m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 10/11£424
Sun 10/113:30 -
2 stops20h 25m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 13/11£426
Mon 4/108:45 -
2 stops28h 40m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 11/11£427
Sun 3/108:45 -
2 stops42h 10m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 11/11£429
Thu 7/121:40 -
2 stops32h 05m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 9/11£431
Mon 23/1120:05 -
2 stops19h 30m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 12/11£439
Thu 3/1213:30 -
2 stops20h 25m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 13/11£445
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 14 November 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 14 November 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
Thu 31/12
14:55-11:45
2 stops38h 50m
Sylhet Osmani Intl
Wed 31/12
00:00-19:00
Nonstop0h 00m
£461
LondonSylhet
LHR London Heathrow - ZYL Sylhet Osmani Intl
LHRZYL
London Heathrow
Tue 17/11
20:05-20:40
2 stops18h 35m
Sylhet Osmani Intl
Wed 31/12
00:00-19:00
Nonstop0h 00m
£471
LondonSylhet
LHR London Heathrow - ZYL Sylhet Osmani Intl
LHRZYL
London Heathrow
Mon 11/1
06:30-11:45
3 stops23h 15m
Sylhet Osmani Intl
Wed 31/12
00:00-19:00
Nonstop0h 00m
£473
Fastest return journey
LondonSylhet
LHR London Heathrow - ZYL Sylhet Osmani Intl
LHRZYL
London Heathrow
Mon 30/11
08:25-07:30
1 stop17h 05m
Sylhet Osmani Intl
Wed 31/12
00:00-19:00
Nonstop0h 00m
£584
LondonSylhet
LHR London Heathrow - ZYL Sylhet Osmani Intl
LHRZYL
London Heathrow
Wed 25/11
09:25-12:00
3 stops20h 35m
Sylhet Osmani Intl
Wed 31/12
00:00-19:00
Nonstop0h 00m
£586
LondonSylhet
LHR London Heathrow - ZYL Sylhet Osmani Intl
LHRZYL
London Heathrow
Tue 15/12
10:00-11:45
3 stops19h 45m
Sylhet Osmani Intl
Wed 31/12
00:00-19:00
Nonstop0h 00m
£615
LondonSylhet
LHR London Heathrow - ZYL Sylhet Osmani Intl
LHRZYL
London Heathrow
Sat 21/11
20:05-07:30
1 stop29h 25m
Sylhet Osmani Intl
Wed 31/12
00:00-19:00
Nonstop0h 00m
£647
LondonSylhet
LHR London Heathrow - ZYL Sylhet Osmani Intl
LHRZYL
London Heathrow
Mon 23/11
20:05-07:30
1 stop29h 25m
Sylhet Osmani Intl
Wed 31/12
00:00-19:00
Nonstop0h 00m
£711
LondonSylhet
LHR London Heathrow - ZYL Sylhet Osmani Intl
LHRZYL
London Heathrow
Sun 29/11
08:25-07:30
1 stop17h 05m
Sylhet Osmani Intl
Wed 31/12
00:00-19:00
Nonstop0h 00m
£715
LondonSylhet
LHR London Heathrow - ZYL Sylhet Osmani Intl
LHRZYL
London Heathrow
Sat 21/11
13:45-15:55
2 stops20h 10m
Sylhet Osmani Intl
Sat 28/11
16:20-12:15
2 stops25h 55m
£816
Flights are sorted by cheapest return flights first.
Deals found on 9/11
Showing 1-10 of 21 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
More
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 47 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 £792). Flying from London Heathrow Airport to Sylhet in December is currently the most expensive (average of £1,377). 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 14 November 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 £937 and £1,132 in December.The cheapest return price found within the last 5 days was £737 on Multiple Airlines (6 Dec–7 Feb).
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.
What’s the top stopover airport for flights from London Heathrow Airport to Sylhet?
Share of one-stop return flights from London Heathrow Airport to Sylhet chosen by Cheapflights users in the past 12 months, using the same stopover each way.
Muscat (MCT) – chosen by Cheapflights users on 64% of one-stop itineraries from London Heathrow Airport to Sylhet on Cheapflights.
What’s the cheapest stopover airport for flights from London Heathrow Airport to Sylhet?
Average return fare for one-stop flights from London Heathrow Airport to Sylhet, chosen by Cheapflights users in the past 12 months, with the same stopover each way.
Muscat (MCT) is the most affordable one-stop option, with an average return flight price of £987.
What’s the fastest stopover option from London Heathrow Airport to Sylhet?
Shortest average travel time for one-stop one-way flights from London Heathrow Airport to Sylhet, based on itineraries clicked by Cheapflights users over the past 12 months, grouped by stopover airport.
Flights via Dhaka (DAC) have the shortest average one-way travel time for one-stop routes: 15h 16m.
Which airport typically offers the quickest stopover for flights from London Heathrow Airport to Sylhet?
Average stopover duration for one-stop one-way flights from London Heathrow Airport to Sylhet, chosen by Cheapflights users in the last 12 months, grouped by stopover airport.
Flights via Muscat (MCT) offer the fastest connection on this route, with an average stopover time of 5h 54m.
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 14 November 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.
Service was good. My headphones didn't work and the touch screen worked on and off. I was switched to a Lufthansa jet from Frankfurt to Newark, which I liked better than United Airlines.
Service was good. My headphones didn't work and the touch screen worked on and off. I was switched to a Lufthansa jet from Frankfurt to Newark, which I liked better than United Airlines.
Service was good. My headphones didn't work and the touch screen worked on and off. I was switched to a Lufthansa jet from Frankfurt to Newark, which I liked better than United Airlines.
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 Oman Air fly from London Heathrow Airport to Sylhet in about 29h 25m. The time it takes to get you to your destination can typically vary by up to . Airlines will cover a distance of 4979 mi.
What are the cheapest airlines flying from London Heathrow Airport to Sylhet round-trip?
Currently priced at £706, 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. Check Cheapflights for deals on Lufthansa for as low as £797. 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 £1,176, our data indicates the cheapest price to be £496. The most popular route (London Heathrow - Sylhet Osmani Intl), is priced around £651.
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 £792). Flying from London Heathrow Airport to Sylhet in December is currently the most expensive (average of £1,377). 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 14 November 2026.
Browse through other flights departing from Heathrow. Flights are based on user searches made on Cheapflights and were last updated on 14 November 2026.
Explore flights to Sylhet departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on 14 November 2026.
Discover the top 3 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 14 November 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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