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Cheap flights from London to Southeast Asia from C$ 563

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 9/1. Fares are subject to change and may not be available on all flights or dates of travel.
LON — BKK
29 Nov — 6 Dec1
1 adult
1 adult, Economy, 0 bags

Find flight deals from London to Southeast Asia

Enter your travel dates to find the best prices.

Cheapest flights from London to Southeast Asia
Explore the most affordable flight options available from London to Southeast Asia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 30 October 2025.

Fri 28/115:40 p.m.LGW - BKK
1 stop30h 30mMultiple Airlines
Fri 5/1212:20 p.m.BKK - LGW
1 stop35h 35mMultiple Airlines
Deal found 27/10C$ 839
Thu 27/1111:05 a.m.LGW - BKK
1 stop31h 25mAir China
Thu 4/127:30 p.m.BKK - LGW
1 stop17h 05mAir China
Deal found 29/10C$ 841
Wed 29/104:00 p.m.LGW - BKK
Nonstop11h 25mNorse Atlantic UK
Wed 5/1112:30 p.m.BKK - LGW
Nonstop13h 00mNorse Atlantic UK
Deal found 28/10C$ 843
Wed 26/114:00 p.m.LGW - BKK
Nonstop11h 25mNorse Atlantic UK
Wed 3/1212:30 p.m.BKK - LGW
Nonstop13h 00mNorse Atlantic UK
Deal found 28/10C$ 846
Thu 13/119:15 a.m.LGW - BKK
1 stop17h 55mMultiple Airlines
Thu 27/1112:25 p.m.BKK - LGW
Nonstop12h 55mMultiple Airlines
Deal found 28/10C$ 848
Thu 27/115:40 p.m.LHR - BKK
1 stop23h 30mAir China
Wed 3/121:30 a.m.BKK - LHR
1 stop23h 20mAir China
Deal found 29/10C$ 850
Tue 18/114:00 p.m.LGW - BKK
Nonstop11h 25mMultiple Airlines
Tue 2/125:25 p.m.BKK - LGW
1 stop22h 10mMultiple Airlines
Deal found 29/10C$ 852
Mon 24/119:15 a.m.LGW - BKK
1 stop23h 10mMultiple Airlines
Fri 28/1112:20 p.m.BKK - LGW
1 stop35h 35mMultiple Airlines
Deal found 30/10C$ 853
Fri 7/113:15 p.m.LGW - BKK
1 stop32h 55mMultiple Airlines
Fri 14/1112:20 p.m.BKK - LGW
1 stop27h 15mMultiple Airlines
Deal found 28/10C$ 860
Thu 6/119:15 a.m.LGW - BKK
1 stop17h 55mMultiple Airlines
Mon 10/1112:40 p.m.BKK - LGW
1 stop35h 15mMultiple Airlines
Deal found 29/10C$ 864
Thu 27/119:30 p.m.LHR - BKK
2 stops61h 45mChina Southern
Thu 4/126:05 p.m.BKK - LHR
1 stop31h 30mChina Southern
Deal found 29/10C$ 866
Thu 20/1110:00 p.m.LHR - BKK
1 stop29h 10mChina Southern
Thu 27/117:15 p.m.BKK - LHR
2 stops29h 40mChina Southern
Deal found 28/10C$ 867

Cheap flight deals from London to Southeast Asia

Keep the following information in mind while searching for London to Southeast Asia flight deals. Data was last updated 30 October 2025.

Round-trip from

C$ 839

One-way from

C$ 563

Popular in

December

Cheapest in

May

Average price

C$ 1,125
28/11-5/12
  • 28/11-5/12
  • 2 total stops
  • 66h 05m total
  • London to Southeast Asia
Search Deals
Shenzhen Airlines
  • Shenzhen Airlines
  • 8/2
  • 1 total stop
  • 22h 05m total
  • London to Southeast Asia
Search Deals
Highest demand for flights based on searches. 4% potential increase in price (C$ 89 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (C$ 62 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in October 2025
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from London to Southeast Asia 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 629,999 searches. Data last updated 30 October 2025.
Use the filters below to find and compare flights from London to Southeast Asia that are best for you.

Fly from

London

Fly to

Southeast Asia

Route

Depart

Return

Price

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Mon 23/2

9:10 p.m.-2:15 a.m.

1 stop22h 05m

Bangkok Suvarnabhumi

Sat 28/3

12:10 p.m.-7:00 p.m.

1 stop37h 50m

C$ 892

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Sun 22/3

8:05 p.m.-10:45 a.m.

1 stop31h 40m

Bangkok Suvarnabhumi

Wed 1/4

6:30 p.m.-7:55 a.m.

2 stops19h 25m

C$ 1,046

LondonBangkok

LGW - BKK

LGWBKK

London Gatwick

Fri 23/1

4:00 p.m.-10:25 a.m.

Nonstop11h 25m

Bangkok Suvarnabhumi

Wed 11/2

12:30 p.m.-6:30 p.m.

Nonstop13h 00m

C$ 1,068

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Wed 31/12

8:55 p.m.-7:10 a.m.

1 stop27h 15m

Bangkok Suvarnabhumi

Wed 28/1

9:25 a.m.-6:10 p.m.

1 stop15h 45m

C$ 1,089

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Wed 26/11

1:55 p.m.-11:30 p.m.

2 stops26h 35m

Bangkok Suvarnabhumi

Thu 4/12

2:55 a.m.-12:05 p.m.

1 stop16h 10m

C$ 1,106

LondonPhuket City

LHR - HKT

LHRHKT

London Heathrow

Wed 31/12

8:50 a.m.-11:35 p.m.

1 stop31h 45m

Phuket City

Wed 14/1

3:30 p.m.-6:40 a.m.

1 stop22h 10m

C$ 1,110

LondonPhuket City

LHR - HKT

LHRHKT

London Heathrow

Tue 25/11

8:50 a.m.-12:00 p.m.

2 stops20h 10m

Phuket City

Tue 2/12

12:25 a.m.-2:30 p.m.

1 stop21h 05m

C$ 1,119

LondonPhuket City

LHR - HKT

LHRHKT

London Heathrow

Sun 7/12

4:15 p.m.-10:30 p.m.

1 stop23h 15m

Phuket City

Wed 17/12

3:15 p.m.-7:30 a.m.

1 stop23h 15m

C$ 1,125

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Wed 25/3

10:00 a.m.-1:40 p.m.

1 stop20h 40m

Bangkok Suvarnabhumi

Thu 2/4

3:25 p.m.-7:30 a.m.

1 stop22h 05m

C$ 1,125

LondonBangkok

LGW - BKK

LGWBKK

London Gatwick

Mon 2/2

9:15 a.m.-3:25 p.m.

1 stop23h 10m

Bangkok Suvarnabhumi

Mon 2/3

12:30 p.m.-6:30 p.m.

Nonstop13h 00m

C$ 1,132

Flights are sorted by cheapest round-trip flights first.

Deals found on 30/10

Showing 1-10 of 60 results
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Best time to book a flight from London to Southeast Asia

Have a flexible travel schedule? Discover the best time to fly to Southeast Asia from London with our price prediction graph.
Estimated round-trip 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 to Southeast Asia

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

Currently, May is the cheapest month in which you can book a flight from London to Southeast Asia (average of C$ 630). Flying from London to Southeast Asia in July is currently the most expensive (average of C$ 977). 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 YJX?

Find hourly flight availability from London to Southeast Asia. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 30 October 2025.

A simple way to save on the total cost of your ticket is to fly from London to Southeast Asia in the afternoon. If you’re flexible enough to do this you can expect to save up to 49% on your trip compared to booking a flight at noon.

Weekly flight availability from London to Southeast Asia

Explore weekly flight availability from London to Southeast Asia. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated 30 October 2025.

The most flights from LON to zzYJX are scheduled on a Tuesday (10 on average). You will have fewer flight options on Wednesday, which is when the least amount of flights are scheduled (8 on average).

Related info for your journey

Find useful and relevant information for your journey from London to Southeast Asia. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from London to Southeast Asia?

    There are many flights that can get you from London to Southeast Asia in 11h 25m. Fly via Shenzhen Airlines, SWISS, or Norse Atlantic UK to get the fastest option. Airlines will cover a distance of 9563 km. This flight may include one or multiple stops.

  • What are the cheapest airlines to fly from London to Southeast Asia one-way?

    The cheapest airlines for a one-way flight from London to Southeast Asia are Shenzhen Airlines (C$ 563), Norse Atlantic UK (C$ 633), and Etihad Airways (C$ 654).

  • What are the most popular routes from London to Southeast Asia?

    Most travellers choose London Heathrow - Bangkok Suvarnabhumi, London Gatwick - Bangkok Suvarnabhumi or London Heathrow - Phuket City when deciding on the best route from London to Southeast Asia.

  • What are the most reliable airlines from London to Southeast Asia?

    Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from London to Southeast Asia on time: EVA Air (77%), Thai Airways (74%), Air Canada (69%).

  • What are the cheapest flights from London to Southeast Asia?

    While on average a flight from London to Southeast Asia is generally C$ 1,340, our data shows the cheapest flight currently is C$ 1,330. When looking at the most popular route, (London Heathrow - Bangkok Suvarnabhumi), you can expect to pay C$ 1,159 for that flight.

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

    Yes. In addition to deals on London to Southeast Asia flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from London to Southeast Asia?

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

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

    Yes. Cheapflights offers flight deals from London to Southeast Asia 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 Southeast Asia?

    Currently, May is the cheapest month in which you can book a flight from London to Southeast Asia (average of C$ 630). Flying from London to Southeast Asia in July is currently the most expensive (average of C$ 977). 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

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Alternative routes for London to Southeast Asia

See prices for flight routes from nearby airports that may be better suited for you.
Heathrow to Suvarnabhumi flights
Heathrow to New Delhi flights
Heathrow to Phuket City flights
Heathrow to Manila flights

Top 3 airlines flying from London to Southeast Asia

Discover the top 3 airlines that operate flights from London to Southeast Asia. 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 629,999 searches. Data last updated 30 October 2025.
AirlineCheapestAverageFlexibilityOn-time
Thai AirwaysCheapestC$ 752AverageC$ 1,592FlexibilityNo cancel feeOn-time77%
Search Thai Airways flights
Air ChinaCheapestC$ 778AverageC$ 838FlexibilityNo cancel feeOn-time67%
Search Air China flights
EVA AirCheapestC$ 1,263AverageC$ 1,382FlexibilityNo cancel feeOn-time74%
Search EVA Air flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travelers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from London to Southeast Asia?

When you search for this flight from London to Southeast Asia, 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 Southeast Asia?

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 Southeast Asia from London.

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

Users can book flights with no change fees policies with our dedicated filters. Book flights from London to Southeast Asia flexibly with Cheapflights today.

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

Yes, Cheapflights offers price alerts on London to Southeast Asia 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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