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Cheap flights from London to Sylhet from £302

LON — ZYL
24 Oct — 31 Oct1
1 adult
1 adult, Economy, 0 bags
Cheapflights Tip: The best prices from London to Sylhet Osmani Intl are usually found in September or February, booked 85 days in advance, depart on a Thursday or Saturday and return on a Monday

Cheap flight deals from London to Sylhet

Enter your travel dates to find the best prices.

Cheapest flights from London to Sylhet

Mon 9/1112:15 -
3 stops37h 15m
Mon 30/1116:20 -
3 stops24h 50m
Deal found 19/9£690
Sat 26/918:20 -
Nonstop9h 45m
Fri 9/1009:35 -
Nonstop11h 20m
Deal found 20/9£693
Mon 7/1212:15 -
3 stops37h 15m
Mon 11/117:10 -
2 stops28h 25m
Deal found 21/9£708
Mon 28/919:35 -
2 stops20h 15m
Wed 14/1008:20 -
2 stops29h 25m
Deal found 23/9£712
Tue 20/1012:45 -
3 stops26h 15m
Tue 27/1013:00 -
3 stops32h 35m
Deal found 22/9£712
Fri 25/910:00 -
2 stops22h 50m
Fri 9/1011:50 -
2 stops25h 55m
Deal found 22/9£715
Wed 30/918:20 -
Nonstop9h 45m
Wed 7/1012:15 -
1 stop33h 50m
Deal found 23/9£715
Sat 19/922:05 -
2 stops39h 05m
Wed 23/912:50 -
3 stops34h 20m
Deal found 19/9£715
Sun 11/1010:00 -
2 stops27h 10m
Sun 8/1110:55 -
2 stops26h 50m
Deal found 23/9£717
Sat 7/1108:45 -
2 stops21h 45m
Thu 26/1113:00 -
2 stops32h 35m
Deal found 23/9£718
Sun 4/1018:20 -
Nonstop9h 45m
Fri 9/1009:35 -
Nonstop11h 20m
Deal found 23/9£718
Sun 8/1108:45 -
2 stops24h 15m
Sun 22/1108:35 -
2 stops29h 10m
Deal found 22/9£718

Find flight deals from London to Sylhet

Round-trip from

£690

One-way from

£302

Popular in

December

Cheapest in

September

Average price

£767

Good round-trip deal

£812 or less

Good one-way deal

£491 or less
9/11-30/11
  • 9/11-30/11
  • 6 total stops
  • 62h 05m total
  • London to Sylhet
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26/11-31/12
  • 26/11-31/12
  • 3 total stops
  • 25h 15m total
  • London to Sylhet
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Highest demand for flights based on searches. 15% potential increase in price (£127 potential increase over avg. return price).
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Cheapest flight prices on average. 4% potential price decrease (£31 potential savings vs. average return price).
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Average for round-trip flights in September 2026
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Price to beat on a round-trip flight from London (LON) to Sylhet Osmani Intl.
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Price to beat on a one-way flight from London (LON) to Sylhet Osmani Intl.
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Cheapflights Fare Finder

 
Use the filters below to find and compare flights from London to Sylhet that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

LondonSylhet

LGW London Gatwick - ZYL Sylhet Osmani Intl

LGWZYL

London Gatwick

Sun 4/10

14:55-13:50

3 stops41h 55m

Sylhet Osmani Intl

Wed 31/12

00:00-19:00

Nonstop0h 00m

£309

LondonSylhet

LTN London Luton - ZYL Sylhet Osmani Intl

LTNZYL

London Luton

Sun 4/10

07:15-13:50

3 stops49h 35m

Sylhet Osmani Intl

Wed 31/12

00:00-19:00

Nonstop0h 00m

£322

LondonSylhet

LGW London Gatwick - ZYL Sylhet Osmani Intl

LGWZYL

London Gatwick

Thu 1/10

13:30-11:20

3 stops40h 50m

Sylhet Osmani Intl

Wed 31/12

00:00-19:00

Nonstop0h 00m

£328

LondonSylhet

LGW London Gatwick - ZYL Sylhet Osmani Intl

LGWZYL

London Gatwick

Sun 11/10

10:00-18:10

2 stops27h 10m

Sylhet Osmani Intl

Wed 31/12

00:00-19:00

Nonstop0h 00m

£343

LondonSylhet

STN London Stansted - ZYL Sylhet Osmani Intl

STNZYL

London Stansted

Sun 11/10

08:30-07:35

2 stops42h 05m

Sylhet Osmani Intl

Wed 31/12

00:00-19:00

Nonstop0h 00m

£346

LondonSylhet

LHR London Heathrow - ZYL Sylhet Osmani Intl

LHRZYL

London Heathrow

Mon 5/10

09:30-13:50

2 stops23h 20m

Sylhet Osmani Intl

Wed 31/12

00:00-19:00

Nonstop0h 00m

£366

LondonSylhet

STN London Stansted - ZYL Sylhet Osmani Intl

STNZYL

London Stansted

Sun 27/9

07:00-14:45

2 stops26h 45m

Sylhet Osmani Intl

Wed 31/12

00:00-19:00

Nonstop0h 00m

£369

LondonSylhet

LTN London Luton - ZYL Sylhet Osmani Intl

LTNZYL

London Luton

Sun 29/11

13:55-19:20

3 stops23h 25m

Sylhet Osmani Intl

Wed 31/12

00:00-19:00

Nonstop0h 00m

£378

LondonSylhet

LGW London Gatwick - ZYL Sylhet Osmani Intl

LGWZYL

London Gatwick

Sun 8/11

10:35-19:20

2 stops26h 45m

Sylhet Osmani Intl

Wed 31/12

00:00-19:00

Nonstop0h 00m

£382

LondonSylhet

STN London Stansted - ZYL Sylhet Osmani Intl

STNZYL

London Stansted

Sun 4/10

09:30-07:35

2 stops41h 05m

Sylhet Osmani Intl

Wed 31/12

00:00-19:00

Nonstop0h 00m

£383

Flights are sorted by cheapest return flights first.

Deals found on 22/9

Showing 1-10 of 60 resultsSorted by cheapest first
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Best time to book a flight from London to Sylhet

Have a flexible travel schedule? Discover the best time to fly to Sylhet from London with our price prediction graph.
Estimated return price

Cheapflights Insights

Everything you need to know about your flight from London to Sylhet

What is the cheapest month to book a flight from London to Sylhet?

Currently, September is the cheapest month in which you can book a flight from London to Sylhet (average of £774). Flying from London to Sylhet in December is currently the most expensive (average of £1,418). 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 LON to ZYL?

When flying from London to Sylhet, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

How much does it cost for a return flight from London to Sylhet?

Airfare is below average for this route at the moment.
London to Sylhet flights typically cost between £735 and £890 in November.
The cheapest return price found within the last 5 days was £690 on Multiple Airlines (9 Nov–30 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 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.

How far ahead should I book a flight from London to Sylhet?

To ensure you get the cheapest price possible for a flight from London to Sylhet, you should look to book at least 76 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.

Reviews of airlines servicing Sylhet

Check out reviews from past customers who have flown with Qatar Airways and Biman Bangladesh from London to Sylhet to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Qatar Airways
7.3
Good
3,730 reviews
Check prices

Entertainment

7.3

Crew

7.9

Boarding

7.5

Comfort

7.3

Food

7.3

Overall

7.3

Reviews

1 / 20
2.0
Mediocre

wizard,Jun 2026

DOH - BKK

It was a terrible experience, when I purchased the Qatar Airways ticket, it stated that I could have one carry on bag and one checked baggage, when I got to the airport they demanded a fee for the checked luggage of $328.00 or 1,705.00 bra real, of which I did not have and had to have a family member deposit it to me in order to pay this fee that was meant to be included, it caused a lot of stress for me and my family and I am very unhappy with this out right trickery. I feel something should be done to prevent other travelers from experiencing what I did, it is not fair.
Qatar Airways
7.3
Good
3,730 reviews
Qatar Airways
7.3
Good
3,730 reviews
Check prices

Entertainment

7.3

Crew

7.9

Boarding

7.5

Comfort

7.3

Food

7.3

Overall

7.3

Reviews

1 / 20
2.0
Mediocre

wizard,Jun 2026

DOH - BKK

It was a terrible experience, when I purchased the Qatar Airways ticket, it stated that I could have one carry on bag and one checked baggage, when I got to the airport they demanded a fee for the checked luggage of $328.00 or 1,705.00 bra real, of which I did not have and had to have a family member deposit it to me in order to pay this fee that was meant to be included, it caused a lot of stress for me and my family and I am very unhappy with this out right trickery. I feel something should be done to prevent other travelers from experiencing what I did, it is not fair.
Biman Bangladesh
6.6
Okay
32 reviews
Qatar Airways
7.3
Good
3,730 reviews
Check prices

Entertainment

7.3

Crew

7.9

Boarding

7.5

Comfort

7.3

Food

7.3

Overall

7.3

Reviews

1 / 20
2.0
Mediocre

wizard,Jun 2026

DOH - BKK

It was a terrible experience, when I purchased the Qatar Airways ticket, it stated that I could have one carry on bag and one checked baggage, when I got to the airport they demanded a fee for the checked luggage of $328.00 or 1,705.00 bra real, of which I did not have and had to have a family member deposit it to me in order to pay this fee that was meant to be included, it caused a lot of stress for me and my family and I am very unhappy with this out right trickery. I feel something should be done to prevent other travelers from experiencing what I did, it is not fair.

Related info for your journey

  • What airport do you fly into for flights to Sylhet from London?

    If you book a flight to Sylhet from London, you will be flying to Osmani Intl, which is the city’s only airport. Sylhet Osmani Intl (ZYL) is located 4.3 mi from the center of Sylhet. There are 0 flights from London to Osmani Intl per day from 2 different airlines.

  • How long is the flight from London to Sylhet?

    A quick flight from London to Sylhet can take about 55h 10m. Air India provides one of the quickest options available for as low as £760. London and Sylhet are separated by a distance of 4979 mi.

  • What are the cheapest airlines flying from London to Sylhet round-trip?

    Our cheapest airline available from London to Sylhet is Lufthansa. Our recent data shows that you can find tickets from as low as £680 on this airline. An additional option worth looking into is Biman Bangladesh, starting at £698. Lufthansa is 28% cheaper than the average price of flights available within the next 90 days to this destination.

  • What are the most popular routes from London to Sylhet?

    When deciding which route to take from London to Sylhet consider London Heathrow - Sylhet Osmani Intl, London Gatwick - Sylhet Osmani Intl or London Stansted - Sylhet Osmani Intl as they are the most popular.

  • What are the cheapest flights from London to Sylhet?

    On average you can expect to pay £1,467 for a flight from London to Sylhet. The cheapest flight overall is £414 while the most popular route, (London Heathrow - Sylhet Osmani Intl) is currently priced at £699.

  • Can I find deals for flights from London to Sylhet that include hotel bookings?

    Yes. In addition to deals on London to Sylhet flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from London to Sylhet?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from London to Sylhet.

  • Can I find deals for business class flights from London to Sylhet?

    Yes. Cheapflights offers flight deals from London 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 to Sylhet?

    Currently, September is the cheapest month in which you can book a flight from London to Sylhet (average of £774). Flying from London to Sylhet in December is currently the most expensive (average of £1,418). 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.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

Fly from London to Sylhet on these airlines

Biman Bangladesh flights from London to Sylhet Osmani Intl

Top 2 airlines flying from London to Sylhet

AirlineCheapestAverageFlexibilityOn-time
LufthansaCheapest£680Average£1,005FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
Biman BangladeshCheapest£698Average£930FlexibilityNo cancel feeOn-time45%
Search Biman Bangladesh flights

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When you search for this flight from London to Sylhet, Cheapflights searches on 900+ travel sites to save you time finding great flight deals online. Additionally, we offer filter features so you can choose a preferred cabin class or airline, see different price ranges, and much more so you can book the flight for you.

Why should you use Cheapflights to find cheap flight tickets from London 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 London.

Can Cheapflights find flights from London to Sylhet with no change fees?

Certainly. Search results for flights to Sylhet from London shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

Can Cheapflights notify me if prices for flights from London to Sylhet become cheaper?

Yes, Cheapflights offers price alerts on London to Sylhet flights so you can book your travel at the perfect time. Price Alerts can be enabled by clicking the bell icon next to the flight deals above and providing your email address where you want to receive the alerts.

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