LON - ZYL

£404 Find Cheap Flights from London to Sylhet – Compare and Save

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from London to Sylhet departing on 12/8. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
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Everything you should know

Cheapest return fare
£678
Typical prices: £685-£862
Biman Bangladesh
Fri 11/9Wed 30/9
LHR - ZYL • Direct
Cheapest direct flights
£678
Typical prices: £688-£864
Biman Bangladesh
Sun 20/9Sun 11/10
LHR - ZYL • Direct
Direct flights
Wed, Fri, Sat, Sun
You can fly direct with Biman Bangladesh. Average duration is 9h 45m
Direct flights
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Most popular
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Avoid delays
Most punctual • 72% on-time
Best time • Fewest delays
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When to travel
Cheapest • 24% price drop
Most popular
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Flight Deals

Cheap Flights from London to Sylhet (LON-ZYL)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for return flights from London to Sylhet that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent return flight deals from London to Sylhet

Fri, 11 Sep - Wed, 30 Sep
Biman Bangladesh Logo
18:20 - 09:05
LHR
-
ZYL
9h 45mdirect
Biman Bangladesh Logo
12:15 - 17:05
ZYL
-
LHR
33h 50m
1 stop
£678Biman Bangladesh
Sun, 20 Sep - Sun, 11 Oct
Biman Bangladesh Logo
18:20 - 09:05
LHR
-
ZYL
9h 45mdirect
Biman Bangladesh Logo
09:35 - 15:55
ZYL
-
LHR
11h 20mdirect
£678Biman Bangladesh
Thu, 17 Sep - Sat, 3 Oct
Multiple Airlines Logo
14:40 - 07:35
STN
-
ZYL
35h 55m
3 stops
Multiple Airlines Logo
08:20 - 13:35
ZYL
-
STN
34h 15m
3 stops
£681Multiple Airlines
Wed, 26 Aug - Wed, 30 Sep
Biman Bangladesh Logo
18:20 - 09:05
LHR
-
ZYL
9h 45mdirect
Biman Bangladesh Logo
12:50 - 17:05
ZYL
-
LHR
33h 15m
1 stop
£681Biman Bangladesh
Thu, 17 Sep - Sat, 3 Oct
Multiple Airlines Logo
15:20 - 07:35
LGW
-
ZYL
35h 15m
3 stops
Multiple Airlines Logo
08:20 - 13:50
ZYL
-
LGW
34h 30m
3 stops
£683Multiple Airlines
Sat, 26 Sep - Sat, 10 Oct
Biman Bangladesh Logo
18:20 - 09:05
LHR
-
ZYL
9h 45mdirect
Biman Bangladesh Logo
09:35 - 15:55
ZYL
-
LHR
11h 20mdirect
£685Biman Bangladesh
Thu, 10 Sep - Thu, 1 Oct
Multiple Airlines Logo
12:15 - 07:35
STN
-
ZYL
38h 20m
3 stops
Multiple Airlines Logo
08:20 - 13:35
ZYL
-
STN
34h 15m
3 stops
£688Multiple Airlines
Sun, 30 Aug - Sat, 19 Sep
Multiple Airlines Logo
08:30 - 07:35
STN
-
ZYL
42h 05m
3 stops
Multiple Airlines Logo
12:15 - 08:25
ZYL
-
STN
25h 10m
3 stops
£688Multiple Airlines
Mon, 14 Sep - Sun, 4 Oct
Multiple Airlines Logo
09:05 - 07:35
STN
-
ZYL
17h 30m
2 stops
Multiple Airlines Logo
11:05 - 08:25
ZYL
-
STN
26h 20m
3 stops
£689Multiple Airlines
Wed, 30 Sep - Wed, 14 Oct
Biman Bangladesh Logo
18:20 - 09:05
LHR
-
ZYL
9h 45mdirect
Biman Bangladesh Logo
09:35 - 15:55
ZYL
-
LHR
11h 20mdirect
£697Biman Bangladesh
Booking Insights

KAYAK’s insights & trends for London to Sylhet flights

Get data-powered insights and trends into flights from London to Sylhet to help you find the cheapest flights, the best time to fly and much more.

How much is a return flight from London to Sylhet?

This analysis is based on the cheapest return trip price found on KAYAK in the last 12 months by searching for a flight from London to Sylhet departing in September.

Flight prices are below average for this route right now.

Flights to Sylhet from London usually cost between £748 and £1,196 in September.
The lowest price found in the past 5 days was £678 on Biman Bangladesh (11 Sept–30 Sept).

What is the cheapest London to Sylhet flight route?

Data is based on round-trip flight searches on KAYAK over the past month.

The cheapest return flight from London to Sylhet costs £738 on the route between London Heathrow Airport (LHR) and Sylhet (ZYL). It is also the most popular route.

What’s the cheapest day of the week to fly from London to Sylhet?

The average price of all round-trip flights from London to Sylhet clicked on KAYAK for each day over the last 12 months.

When flying from London to Sylhet, you should consider leaving on a Thursday and avoid Tuesdays if you are looking for the best rates. For your return to London, you’ll find the best rates on Wednesdays and the most expensive ones on Thursdays.

What is the cheapest month to fly from London to Sylhet?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from London to Sylhet, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from London to Sylhet is September, where tickets cost £713 (return) on average. On the other hand, the most expensive months are December and July, where the average cost of round-trip tickets is £1,406 and £1,112 respectively.

Can I save money by flying with a stopover from London to Sylhet?

The average return price for all direct flights, flights with one stopover, and flights with two stopovers for the route found by users searching on KAYAK in the last 2 weeks.

Yes, flying with a stopover may cost you more time, but you can also save money on the route, with a 2 stops stopover the cheapest option at £792 on average.

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

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from London to Sylhet, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from London to Sylhet, you should book around 1 week before departure. For the absolute cheapest price, our data suggests you should book 24 weeks before departure.

Good to know - Cheap tickets from London to Sylhet

Low season

February

Cheapest flight

£404
Best time to beat the crowds (13% less expensive on average)
Most popular time to fly (11% more expensive on average)
Flight from London Heathrow Airport to Sylhet

When to book flights from London to Sylhet

Are your dates flexible? Find out the best times to travel from London to Sylhet based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated return price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or returns with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from London to Sylhet

  • Which airlines fly from London to Sylhet?

    The vast majority of flights on this route are indirect. Turkish Airlines and Emirates operate many of them, in combination with US-Bangla Airlines. A common route you can book is the one flown by Air India together with Vistara and US-Bangla. Qatar Airlines also offers flights in conjunction with Biman Bangladesh Airlines. Given the number of airlines involved, these are generally two- or three-stop flights.

  • How do I get to and from the airports in London and Sylhet?

    On this route, you'll either leave from London Heathrow Airport or London Gatwick Airport. To get to the former, simply hop onto the Heathrow Express at Paddington Station and you'll be there in about 15min. To get to Gatwick, catch the Gatwick Express, which takes about 30min. Once you've landed at Sylhet Osmani International, you can either collect your hire car or take a taxi into town. It's about an 8min drive.

  • Which airlines are most carbon-efficient on this route?

    You can save as much as 50% on carbon emissions by using a combination of airlines. The ticket to book will have you leaving London on Air India and flying to New Delhi Indira Gandhi Airport (DEL). Here, you'll change to Vistara for a flight to Dhaka Zia International (DAC) in Bangladesh, before switching to US-Bangla Airlines for the short connecting flight to Sylhet. While there are a few take-off and landing cycles, it's still a more carbon-efficient route.

  • What accessibility features do the airports offer?

    Heathrow and Gatwick have particularly good amenities for passengers who have limited mobility, as well as those with hidden disabilities. A dedicated team will look after your needs – simply advise your airline or travel agent at least 48h in advance. All amenities like restrooms have been adapted for accessibility. You can get wheelchair assistance at Sylhet Airport, and staff is on hand in case you need personal assistance.

  • How many flights are there between London and Sylhet per day?

    There is a maximum of 1 direct flight a day that takes off from London and lands in Sylhet, with an average flight time of 9h 45m. The most common departure time is 18:00 and most flights take off in the evening. Each week, there are 4 flights.

  • What is the cheapest flight from London to Sylhet?

    In the last 5 days, the lowest price for a flight from London to Sylhet was £404 for a one-way ticket and £678 for a return.

  • Which airports will I be using when flying from London to Sylhet?

    London has 4 major airports: London Gatwick, London Heathrow, London Luton, and London Stansted. Sylhet Osmani Intl is the only airport in Sylhet. You’ll usually find the cheapest deals if you fly from London Heathrow Airport.

  • Which aircraft models fly most regularly from London to Sylhet?

    The Boeing 787-8 Dreamliner is the aircraft model that flies most regularly on the London to Sylhet flight route.

  • On which days can I fly direct from London to Sylhet?

    You can catch a direct flight from London to Sylhet on on Wednesday, Friday, Saturday, and Sunday.

  • Which is the best airline for flights from London to Sylhet, Qatar Airways or Biman Bangladesh?

    The two airlines most popular with KAYAK users for flights from London to Sylhet are Qatar Airways and Biman Bangladesh. With an average price for the route of £766 and an overall rating of 7.4, Qatar Airways is the most popular choice. Biman Bangladesh is also a great choice for the route, with an average price of £913 and an overall rating of 7.1.

  • How does KAYAK find such low prices on flights from London to Sylhet?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from London to Sylhet.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from London to Sylhet?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Sylhet from London is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from London to Sylhet?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional return ticket. You could then fly to Sylhet with an airline and back to London with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from London to Sylhet?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Sylhet from London up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

KAYAK’s top tips for finding a cheap flight from London to Sylhet

  • Looking for a cheap flight from London to Sylhet? 25% of our users found flights on this route for £585 or less one-way and £850 or less round-trip.
  • The two main departure airports on this route are London Heathrow (LHR) and London Gatwick (LGW). They both have excellent facilities, including play areas for children where you can relax with a cup of tea while the kids blow off energy ahead of your flight.
  • You'll generally make at least two plane transfers en route, sometimes three, depending on the ticket you've booked, so keep your onboard luggage as compact as possible. Try to only take one hand item. It will make it easier and you're less likely to forget something.
  • Sylhet Osmani International Airport (ZYL) is a modern terminal with plenty of facilities. There are food and drink outlets and free internet access. Healthcare facilities are also plentiful, from first aid to dentists, and there's a variety of shops.
  • Gatwick Airport has no less than four public access lounges that you can use for a fee. They all provide hot and cold food, comfortable seating and full bar facilities. The North and South Terminal lounges also offer quiet spaces.
  • Landing at Sylhet Airport gives you access to north-eastern Bangladesh, where you can visit other major towns in the region, like Beanibazar, Charmahalla and Miajaner Gaon. A quick and easy way to get around is to hire a car, which you can easily do through KAYAK.

Prefer to fly direct from London to Sylhet?

 
Direct data is based off flight results for the next 60 days. Find direct flights from all airlines flying direct from London to Sylhet Osmani Intl.
Find which airlines fly direct from London to Sylhet Osmani Intl Airport, which days they fly and book direct flights.

Direct departures

London to Sylhet Osmani Intl

Wednesday

Biman Bangladesh

Biman Bangladesh

Friday

Biman Bangladesh

Biman Bangladesh

Saturday

Biman Bangladesh

Biman Bangladesh

Sunday

Biman Bangladesh

Biman Bangladesh

See more direct flights

Direct returns

Sylhet Osmani Intl to London

Wednesday

Biman Bangladesh

Biman Bangladesh

Thursday

Biman Bangladesh

Biman Bangladesh

Friday

Biman Bangladesh

Biman Bangladesh

Saturday

Biman Bangladesh

Biman Bangladesh

Sunday

Biman Bangladesh

Biman Bangladesh

See more direct flights

Reviews of the top airlines flying from London to Sylhet

 
See real verified KAYAK customer reviews for airlines flying from London to Sylhet. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from London to Sylhet? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.4
Qatar AirwaysOverall score based on 3738 reviews
7.9Crew
7.3Food
7.5Boarding
7.3Entertainment
7.3Comfort
Airline reviews

Terrible experience resolving missed connection after flight was delayed. 3 hour queue at transit desk, not enough staff, no organisation, worst ever flying experience.

2.0 MediocreThomas, Jul 2025
LHR - DOH
Read more Qatar Airways reviews

Terrible experience resolving missed connection after flight was delayed. 3 hour queue at transit desk, not enough staff, no organisation, worst ever flying experience.

Boston to Doha was great but Doha to Dhaka was the worst experience.

The rows of seats in economy class are seriously close to one another making eating and resting just about impossible - there is hardly any legroom. Anyone larger than average size would have an incredibly uncomfortable flight. I had to basically share my seat with the lady passenger next to me as she was too big to fit into her allotted seat.

As gold member there is no priority checkin. Meaning you either have to board with your zone or last with business class pax. As economy pax all the baggage bays are filled by the time you arrive

Food was good, attendants were friendly. Seats were not comfortable. Did not receive any amenities such as eyemask or earplugs that would have helped sleep. Additionally a large group of passengers boarded very late into boarding and were a disruption for almost the whole flight. Flight attendants did their best but the kids were making so much noise, kicking seats, and half the time no adult was sat with them so they weren’t being managed.

I staff or crew they were very friendly and humbly, they done theirs service very well, I appreciate them and thank you to the company or Qatar 🇶🇦 Government for providing as good service in their flight ,once again, thank you 😊 🙏 😀 😉 👍

Crews are very rude and unhelpful. Cramped seats in economy. Foods are useless

Lovely aircraft and I flight entertainment. Good leg room. Full flight crew struggled a bit

Food not good as good as last time flew with them

Seats very uncomfortable, impossible to sleep. Food average, bakery items not fresh. Pockets in seats not large enough to hold a book and a few other items. Cabin temperature too cold, even with blanket. Good selection of movies. Other than that 12 hours of torture!

If Biman doesn't improve its service. they will lose business.

The food quality could have been a little better. Not sure if the flight was late due to weather but that was another thing. Overall it was a good experience.

It was ok. I wish if they could maintain the time.

Internal air serrulation was poor, felt suffocated after a while. Food was horrible. Seats were not comfortable at all, no leg or arm stretch room at all, even though I am not a big person at all. Dhaka transit passengers' waiting area was also horrible, dirty and unfriendly service. Middle of the journey opening previously checked in baggage was extremely unpleasant experience. I never experienced anything like this before in my 30+ years airplane journey experience.

I like food, look for extra meals or foods please

Late Biman. I will never ever go with Biman again.

There was a lot of kindness on the part of the crew. There was a strong smell throughout the plane.

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

Information on your arrival and departure airports