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Cheap flights from London Heathrow Airport to Sylhet from £428

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from London Heathrow Airport to Sylhet departing on 17/1. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

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Find the cheapest flights from London Heathrow Airport to Sylhet

Cheap return flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
11:30 - 21:45LHR-ZYL
28h 15m3 stops
Multiple Airlines Logo
12:15 - 11:05ZYL-LHR
28h 50m3 stops
£685Multiple Airlines
Find Deal
Thu, 20 Nov - Fri, 5 Dec
Multiple Airlines Logo
06:35 - 15:30LHR-ZYL
26h 55m3 stops
Multiple Airlines Logo
10:55 - 11:05ZYL-LHR
30h 10m3 stops
£703Multiple Airlines
Find Deal
Fri, 9 Jan - Sun, 1 Feb
Multiple Airlines Logo
21:50 - 20:00LHR-ZYL
40h 10m2 stops
Multiple Airlines Logo
12:15 - 06:55ZYL-LHR
47h 40m2 stops
£712Multiple Airlines
Find Deal
Sun, 15 Mar - Wed, 15 Apr
Multiple Airlines Logo
14:15 - 16:40LHR-ZYL
20h 25m2 stops
Multiple Airlines Logo
08:35 - 07:30ZYL-LHR
28h 55m2 stops
£715Multiple Airlines
Find Deal
Tue, 18 Nov - Mon, 1 Dec
Multiple Airlines Logo
14:15 - 16:40LHR-ZYL
20h 25m2 stops
Multiple Airlines Logo
08:35 - 07:30ZYL-LHR
28h 55m2 stops
£726Multiple Airlines
Find Deal
Tue, 18 Nov - Mon, 1 Dec
Multiple Airlines Logo
21:50 - 11:50LHR-ZYL
32h 00m2 stops
Multiple Airlines Logo
22:10 - 06:35ZYL-LHR
37h 25m2 stops
£732Multiple Airlines
Find Deal
Thu, 20 Nov - Sun, 10 May
Multiple Airlines Logo
06:40 - 15:30LHR-ZYL
26h 50m3 stops
Multiple Airlines Logo
09:55 - 11:05ZYL-LHR
31h 10m3 stops
£735Multiple Airlines
Find Deal
Fri, 28 Nov - Fri, 5 Dec
Multiple Airlines Logo
10:00 - 21:10LHR-ZYL
29h 10m2 stops
Multiple Airlines Logo
08:35 - 07:30ZYL-LHR
28h 55m2 stops
£738Multiple Airlines
Find Deal
Wed, 7 Jan - Sun, 18 Jan
Multiple Airlines Logo
14:15 - 16:40LHR-ZYL
20h 25m2 stops
Multiple Airlines Logo
08:35 - 07:30ZYL-LHR
28h 55m2 stops
£741Multiple Airlines
Find Deal
Wed, 7 Jan - Wed, 4 Feb
Multiple Airlines Logo
10:00 - 21:10LHR-ZYL
29h 10m2 stops
Multiple Airlines Logo
08:35 - 07:30ZYL-LHR
28h 55m2 stops
£743Multiple Airlines
Find Deal
Wed, 7 Jan - Tue, 10 Feb

momondo Fare Finder

 
Customise your flight search to find flights from London Heathrow Airport 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, momondo users made 279,928 searches. Data last updated 31 October 2025.
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

Thu 20/11

11:30-21:45

3 stops28h 15m

Sylhet Osmani Intl

Fri 5/12

12:15-11:05

3 stops28h 50m

£685

LondonSylhet

LHR - ZYL

LHRZYL

London Heathrow

Fri 9/1

06:35-15:30

3 stops26h 55m

Sylhet Osmani Intl

Sun 1/2

10:55-11:05

3 stops30h 10m

£703

LondonSylhet

LHR - ZYL

LHRZYL

London Heathrow

Sun 15/3

21:50-20:00

2 stops40h 10m

Sylhet Osmani Intl

Wed 15/4

12:15-06:55

2 stops47h 40m

£712

LondonSylhet

LHR - ZYL

LHRZYL

London Heathrow

Tue 18/11

14:15-16:40

2 stops20h 25m

Sylhet Osmani Intl

Mon 1/12

08:35-07:30

2 stops28h 55m

£715

LondonSylhet

LHR - ZYL

LHRZYL

London Heathrow

Tue 18/11

14:15-16:40

2 stops20h 25m

Sylhet Osmani Intl

Mon 1/12

08:35-07:30

2 stops28h 55m

£726

LondonSylhet

LHR - ZYL

LHRZYL

London Heathrow

Thu 20/11

21:50-11:50

2 stops32h 00m

Sylhet Osmani Intl

Sun 10/5

22:10-06:35

2 stops37h 25m

£732

LondonSylhet

LHR - ZYL

LHRZYL

London Heathrow

Fri 28/11

06:40-15:30

3 stops26h 50m

Sylhet Osmani Intl

Fri 5/12

09:55-11:05

3 stops31h 10m

£735

LondonSylhet

LHR - ZYL

LHRZYL

London Heathrow

Wed 7/1

10:00-21:10

2 stops29h 10m

Sylhet Osmani Intl

Sun 18/1

08:35-07:30

2 stops28h 55m

£738

LondonSylhet

LHR - ZYL

LHRZYL

London Heathrow

Wed 7/1

14:15-16:40

2 stops20h 25m

Sylhet Osmani Intl

Wed 4/2

08:35-07:30

2 stops28h 55m

£741

LondonSylhet

LHR - ZYL

LHRZYL

London Heathrow

Wed 7/1

10:00-21:10

2 stops29h 10m

Sylhet Osmani Intl

Tue 10/2

08:35-07:30

2 stops28h 55m

£743

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Sylhet from

How to get the cheapest flight ticket from London Heathrow Airport to Sylhet

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to Sylhet?

If you’re not able to fly to Sylhet in September, then May is your next best option. Flight prices from London Heathrow Airport to Sylhet during May average around £754.

What is the cheapest day to depart on your flight to Sylhet?

The cheapest day to depart on your flight to Sylhet is on a Thursday when prices can be found for as low as £855. This is often the case because there is less demand to fly during this day of the week. On the other hand, Tuesday is the most expensive day to depart from London Heathrow Airport because it is more convenient for both business and leisure travellers. As a result, prices tend to be around £1,234.

What is the cheapest time of day to depart on your flight to Sylhet?

Our data shows that the cheapest London Heathrow Airport to Sylhet flights are usually those with departure times in the morning. Our users have found flights to Sylhet in the morning for as low as £572. Try not to purchase tickets in the afternoon because they tend to be around £896. Of course, these prices can vary depending on the time of year and what airport you fly to.

What is the cheapest London Heathrow to Sylhet Osmani Intl flight route?

Fly from London Heathrow to Sylhet Osmani Intl for the best London Heathrow - Sylhet Osmani Intl flight prices

How far in advance should I book a flight to Sylhet?

You are more likely to see cheaper flights to Sylhet from London Heathrow Airport when booking weeks ahead of your departure date. In general, you can expect to find flights to Sylhet for around £922 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Sylhet from London Heathrow Airport for as low as £768 on momondo.

What cabin class options are available on London Heathrow to Sylhet Osmani Intl flights?

There are 3 cabin classes available to choose from on London Heathrow to Sylhet Osmani Intl flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

How have London Heathrow Airport to Sylhet flight prices changed over time?

As of October 2025, prices for London Heathrow Airport to Sylhet flights are approximately 12% more expensive when compared to flights at the same time last year.

When to book flights from London Heathrow Airport to Sylhet

Are you open to changing your travel dates? Check out the ideal times to fly from London Heathrow Airport to Sylhet according to our flight data. Find out which month and days have the cheapest flights.
Estimated return price

Cheap London Heathrow Airport to Sylhet (LHR to ZYL) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from London Heathrow Airport to Sylhet

Best price found

£592

Fastest flight time

9h 40m

Direct flights

Mon, Thu, Sat and Sun

Airports in Sylhet

1 airport
The best one-way flight to Sylhet from London Heathrow Airport in the past 72 hours is £592. The best return flight deal from London Heathrow Airport to Sylhet found on momondo in the last 72 hours is £805.
The fastest flight from London Heathrow Airport to Sylhet takes 9h 40m
Direct flights go from London Heathrow Airport to Sylhet on Monday, Thursday, Saturday and Sunday. Airline offering direct flights is Biman Bangladesh..
There is 1 airport near Sylhet: Sylhet Osmani Intl (ZYL)
Search flight deals

  • How far is London Heathrow to Sylhet Osmani Intl by plane?

    There are 4982.1 mi between London Heathrow and Sylhet Osmani Intl. Typically, this will take 17h 20m by plane in normal conditions.

  • When did momondo last update prices for flights from London Heathrow Airport to Sylhet Osmani Intl Airport?

    Prices for flights from London Heathrow Airport to Sylhet Osmani Intl Airport are updated daily.

  • How many operators does momondo search for flights from London Heathrow Airport to Sylhet Osmani Intl Airport?

  • How old do you have to be to fly from London Heathrow Airport to Sylhet Osmani Intl Airport?

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from London Heathrow Airport to Sylhet Osmani Intl Airport.

  • What documentation or ID do you need to fly to Sylhet Osmani Intl Airport?

    The necessary travel and health documents for your Sylhet Osmani Intl Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

  • What is the most popular plane model from London Heathrow Airport to Sylhet?

  • What is the most popular airline from London Heathrow Airport to Sylhet?

Best airlines flying from London Heathrow Airport to Sylhet

Compare and see reviews for airlines that fly from London Heathrow Airport to Sylhet with momondo
Airline
Rating
Free Cancellation
Price
Biman BangladeshPriceFrom £665Free CancellationRating
0.0
0 reviews
Search Biman Bangladesh flights

Why use momondo?

Why should I use momondo to find a flight deal from London to Sylhet?

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from London to Sylhet . Millions of users trust and use momondo every year so you are in good hands.

Can I find flights from London to Sylhet with flexible booking policies on momondo?

All flight searches from London to Sylhet on momondo can be filtered to show those which offer flexible booking policies.

How can momondo help me find flights from London to Sylhet?

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from London to Sylhet.

I’m not ready to book a flight from London to Sylhet right now. Can momondo alert me if prices change?

Of course. momondo tracks the price of London to Sylhet flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

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