Cheap flights from London Heathrow Airport to Sylhet from £335
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 15/9. Fares are subject to change and may not be available on all flights or dates of travel.
Cheapflights Tip: The best prices from London Heathrow to Sylhet Osmani Intl are usually found in September or May, booked 19 days in advance, depart on a Wednesday or Friday and return on a Friday
Cheap 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 29 August 2025.
Round-trip from | £668 |
---|---|
One-way from | £335 |
Popular in | December |
Cheapest in | September |
Average price | £955 |
Good round-trip deal | £719 or less |
Good one-way deal | £504 or less |
Find flight deals from Heathrow to Sylhet
Cheapest flights from Heathrow to SylhetExplore 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 29 August 2025.
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 29 August 2025.
Cheapflights Fare Finder
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
LondonSylhet
LHR - ZYL
LHRZYL
London Heathrow
Wed 7/1
15:45-17:20
2 stops19h 35m
Sylhet Osmani Intl
Thu 19/3
17:50-13:45
2 stops25h 55m
LondonSylhet
LHR - ZYL
LHRZYL
London Heathrow
Wed 24/9
18:20-09:05
Nonstop9h 45m
Sylhet Osmani Intl
Wed 1/10
09:35-15:55
Nonstop11h 20m
LondonSylhet
LHR - ZYL
LHRZYL
London Heathrow
Wed 7/1
15:45-16:00
2 stops18h 15m
Sylhet Osmani Intl
Sat 7/2
16:25-13:45
2 stops27h 20m
LondonSylhet
LHR - ZYL
LHRZYL
London Heathrow
Wed 7/1
10:45-16:00
2 stops23h 15m
Sylhet Osmani Intl
Sat 31/1
11:00-13:45
2 stops32h 45m
LondonSylhet
LHR - ZYL
LHRZYL
London Heathrow
Fri 26/9
18:20-09:05
Nonstop9h 45m
Sylhet Osmani Intl
Fri 3/10
09:35-15:55
Nonstop11h 20m
LondonSylhet
LHR - ZYL
LHRZYL
London Heathrow
Sun 11/1
15:45-19:45
2 stops22h 00m
Sylhet Osmani Intl
Fri 30/1
09:55-13:45
2 stops33h 50m
LondonSylhet
LHR - ZYL
LHRZYL
London Heathrow
Sat 27/9
18:20-09:05
Nonstop9h 45m
Sylhet Osmani Intl
Sat 4/10
09:35-15:55
Nonstop11h 20m
LondonSylhet
LHR - ZYL
LHRZYL
London Heathrow
Mon 1/12
14:15-17:20
2 stops21h 05m
Sylhet Osmani Intl
Tue 30/12
08:30-07:30
2 stops29h 00m
LondonSylhet
LHR - ZYL
LHRZYL
London Heathrow
Thu 11/9
06:30-21:30
3 stops34h 00m
Sylhet Osmani Intl
Sun 14/9
10:05-14:05
3 stops33h 00m
LondonSylhet
LHR - ZYL
LHRZYL
London Heathrow
Fri 12/9
18:20-09:05
Nonstop9h 45m
Sylhet Osmani Intl
Sat 18/10
09:35-15:55
Nonstop11h 20m
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.
Cheapflights Insights
Everything you need to know about your flight from London Heathrow Airport to Sylhet
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 19 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 £842). Flying from London Heathrow Airport 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 LHR to ZYL?
A simple way to save on the total cost of your ticket is to fly from London Heathrow Airport to Sylhet at midday. If you’re flexible enough to do this you can expect to save up to 3% on your trip compared to booking a flight in the morning.
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.
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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 29 August 2025.
Top airline flying from Heathrow to Sylhet
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 29 August 2025.
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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.