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£270+ Cheap flights to Southeast Asia

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 18/1. Fares are subject to change and may not be available on all flights or dates of travel.
— BKK
9 nov — 16 nov1
1 adult
1 adult, Economy

Flights to Southeast Asia in 2025

Find the latest flights to Southeast Asia in 2025, with up-to-date prices and availability. In the last 7 days, Cheapflights users made a total of 858,174 searches and data was last updated on 10 ottobre 2025.

Return from

£436

One-way from

£270

Popular in

December

Cheapest in

May

Average price

£578
1/12-15/12
  • 1/12-15/12
  • 3 total stops
  • 47h 50m total
  • London to Bangkok
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18/1
  • 18/1
  • 2 total stops
  • 23h 45m total
  • London to Southeast Asia
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Highest demand for flights based on searches. 9% potential increase in price (£49 potential increase over avg. return price).
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Cheapest flight prices on average. 3% potential price decrease (£17 potential savings vs. average return price).
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Average for return flights in October 2025
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Find flights to Southeast Asia

Browse one-way and return flights deals to Southeast Asia on Cheapflights. Flight deals are based on user searches and were last updated on 10 ottobre 2025
Explore Southeast Asia
Flights to Bangkok
Flights to Manila
Flights to Denpasar
Flights to Kuala Lumpur
Flights to Phuket City
Flights to Singapore

Find flight deals to Southeast Asia

Enter your travel dates to find the best prices.

Cheapest flights to Southeast Asia
Explore the most affordable flight options available to Southeast Asia. Find the lowest fares based on data from user searches, with prices last updated on 10 ottobre 2025.

lun 1/1206:35LGW - BKK
2 stops20h 55mMultiple Airlines
lun 15/1212:40BKK - LGW
1 stop26h 55mMultiple Airlines
Deal found 8/10£436
dom 16/1122:00LHR - BKK
1 stop20h 05mChina Southern
ven 5/1218:55BKK - LHR
1 stop30h 40mChina Southern
Deal found 8/10£437
mar 18/1106:35LGW - BKK
2 stops31h 30mMultiple Airlines
mar 9/1206:50BKK - LGW
2 stops32h 45mMultiple Airlines
Deal found 8/10£438
dom 2/1121:10LHR - BKK
1 stop31h 00mShenzhen Airlines
dom 30/1119:30BKK - LHR
1 stop30h 40mShenzhen Airlines
Deal found 8/10£438
mar 18/1114:40STN - BKK
2 stops19h 15mMultiple Airlines
sab 6/1214:40BKK - STN
1 stop28h 05mMultiple Airlines
Deal found 9/10£438
mer 5/1111:05LGW - BKK
1 stop31h 25mAir China
mer 26/1102:30BKK - LGW
1 stop35h 25mAir China
Deal found 9/10£439
mer 26/1122:00LHR - BKK
1 stop20h 05mChina Southern
dom 7/1202:10BKK - LHR
1 stop23h 25mChina Southern
Deal found 8/10£439
gio 6/1120:30STN - BKK
2 stops31h 10mMultiple Airlines
mer 12/1104:35BKK - STN
1 stop23h 00mMultiple Airlines
Deal found 9/10£439
dom 2/1107:00LGW - BKK
2 stops19h 50mMultiple Airlines
lun 17/1112:40BKK - LGW
1 stop26h 55mMultiple Airlines
Deal found 8/10£440
dom 2/1121:15LHR - BKK
1 stop20h 05mHainan Airlines
dom 30/1119:10BKK - LHR
2 stops29h 45mHainan Airlines
Deal found 8/10£440
lun 24/1107:30STN - BKK
2 stops27h 35mMultiple Airlines
dom 30/1117:55BKK - STN
2 stops31h 30mMultiple Airlines
Deal found 9/10£440
mar 25/1120:25LHR - MNL
1 stop19h 40mAir China
mar 9/1206:20MNL - LHR
1 stop19h 30mAir China
Deal found 8/10£441

Cheapflights Fare Finder

 
Locate flights to Southeast Asia that fit your budget, with regularly updated fares and availability. In the last 7 days, Cheapflights users made a total of 858,174 searches and data was last updated on 10 ottobre 2025.
Use the filters below to find and compare flights to Southeast Asia that are best for you.

Fly from

London

Route

Depart

Return

Price

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

ven 7/11

21:10-18:30

1 stop38h 20m

Bangkok Suvarnabhumi

mar 18/11

03:15-19:10

1 stop22h 55m

£447

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

sab 29/11

21:10-02:15

1 stop22h 05m

Bangkok Suvarnabhumi

ven 5/12

19:30-19:10

1 stop30h 40m

£447

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

ven 14/11

21:10-11:10

1 stop31h 00m

Bangkok Suvarnabhumi

sab 22/11

03:15-19:10

1 stop22h 55m

£449

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

ven 21/11

21:10-02:15

1 stop22h 05m

Bangkok Suvarnabhumi

sab 13/12

03:15-19:10

1 stop22h 55m

£450

LondonBangkok

LGW - BKK

LGWBKK

London Gatwick

mar 18/11

16:00-10:25

Nonstop11h 25m

Bangkok Suvarnabhumi

gio 4/12

12:25-18:20

Nonstop12h 55m

£490

LondonBangkok

LGW - BKK

LGWBKK

London Gatwick

mer 5/11

16:00-10:25

Nonstop11h 25m

Bangkok Suvarnabhumi

gio 27/11

12:25-18:20

Nonstop12h 55m

£492

LondonKuala Lumpur

LHR - KUL

LHRKUL

London Heathrow

gio 20/11

13:55-08:05

1 stop34h 10m

Kuala Lumpur Intl

mar 10/2

09:35-14:30

1 stop36h 55m

£504

LondonBangkok

LGW - BKK

LGWBKK

London Gatwick

gio 4/12

10:30-12:20

1 stop18h 50m

Bangkok Suvarnabhumi

mer 31/12

07:50-14:00

2 stops37h 10m

£523

LondonKuala Lumpur

LHR - KUL

LHRKUL

London Heathrow

sab 15/11

13:55-19:35

1 stop21h 40m

Kuala Lumpur Intl

mer 11/2

09:35-14:30

1 stop36h 55m

£524

LondonBangkok

LTN - BKK

LTNBKK

London Luton

sab 10/1

14:00-23:20

2 stops26h 20m

Bangkok Suvarnabhumi

lun 26/1

02:55-23:10

2 stops27h 15m

£526

Flights are sorted by cheapest return flights first.

Deals found on 10/10

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

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

How long is the flight to Southeast Asia?

On average, a flight from London to Southeast Asia takes 23 hours 10 minutes. Flights to Southeast Asia from other popular cities in United Kingdom will vary in length. Below are a few examples of popular routes and their flight times.

When is the cheapest time to fly to Southeast Asia?

Use this chart to determine the cheapest time to fly return from London to Southeast Asia. Price data was last updated on 16 December 2024.

Users looking for the lowest fares to Southeast Asia should consider flying on Saturday afternoons, when prices are typically cheapest. Budget-minded travellers will want to avoid Saturday at midday, when prices are usually at their highest.

Weekly flight availability to Southeast Asia

The most flights from London to Southeast Asia are scheduled on a Monday (7 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (7 on average).

What are the most popular airlines that fly to Southeast Asia?

The most popular airlines flying from London to Southeast Asia are Thai Airways, Singapore Airlines and Qatar Airways.

Emirates
Emirates
From £343
Qatar Airways
Qatar Airways
From £439
Etihad Airways
Etihad Airways
From £425
Thai Airways
Thai Airways
From £496

What are the cheapest airlines that fly to Southeast Asia?

The cheapest airlines flying from London to Southeast Asia are Bangkok Airways, Oman Air and Air China.

Rainfall in Southeast Asia by month

Plan your trip to Southeast Asia by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Southeast Asia ranges from 10.0 - 320.0 inches per month. September is typically the wettest month, when rainfall can reach 320.0 mm. January is typically the driest time to visit Southeast Asia when rainfall is around 10.0 mm.

Temperature in Southeast Asia by month

Plan your trip to Southeast Asia by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Southeast Asia, use this chart to help with planning. For those seeking warmer temperatures, April is the ideal time of year to visit, when temperatures reach an average of 30.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 26.0 C).

Reviews of airlines servicing Southeast Asia

Get insights into the airlines that provide service to Southeast Asia. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Southeast Asia. Reviews last updated 10 ottobre 2025.
Read through reviews of airlines serving Southeast Asia, such as Singapore Airlines, Cathay Pacific, andQatar Airways. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Singapore Airlines
8.1
Very Good
1,378 reviews
Check prices

Overall

8.1

Boarding

8.2

Crew

8.6

Entertainment

8.0

Comfort

8.0

Food

7.7

Reviews

1 / 20
10.0
Excellent

Anonymous,Sept 2025

BCN - SIN

Staff at Barcelona were fantastic, they helped me change a flight and nothing was any problem. Thank you Dina.
Singapore Airlines
8.1
Very Good
1,378 reviews
Singapore Airlines
8.1
Very Good
1,378 reviews
Check prices

Overall

8.1

Boarding

8.2

Crew

8.6

Entertainment

8.0

Comfort

8.0

Food

7.7

Reviews

1 / 20
10.0
Excellent

Anonymous,Sept 2025

BCN - SIN

Staff at Barcelona were fantastic, they helped me change a flight and nothing was any problem. Thank you Dina.
Cathay Pacific
7.6
Good
1,020 reviews
Singapore Airlines
8.1
Very Good
1,378 reviews
Check prices

Overall

8.1

Boarding

8.2

Crew

8.6

Entertainment

8.0

Comfort

8.0

Food

7.7

Reviews

1 / 20
10.0
Excellent

Anonymous,Sept 2025

BCN - SIN

Staff at Barcelona were fantastic, they helped me change a flight and nothing was any problem. Thank you Dina.
Qatar Airways
7.4
Good
3,644 reviews
Singapore Airlines
8.1
Very Good
1,378 reviews
Check prices

Overall

8.1

Boarding

8.2

Crew

8.6

Entertainment

8.0

Comfort

8.0

Food

7.7

Reviews

1 / 20
10.0
Excellent

Anonymous,Sept 2025

BCN - SIN

Staff at Barcelona were fantastic, they helped me change a flight and nothing was any problem. Thank you Dina.
China Southern
7.4
Good
116 reviews
Singapore Airlines
8.1
Very Good
1,378 reviews
Check prices

Overall

8.1

Boarding

8.2

Crew

8.6

Entertainment

8.0

Comfort

8.0

Food

7.7

Reviews

1 / 20
10.0
Excellent

Anonymous,Sept 2025

BCN - SIN

Staff at Barcelona were fantastic, they helped me change a flight and nothing was any problem. Thank you Dina.
Air China
7.2
Good
113 reviews
Singapore Airlines
8.1
Very Good
1,378 reviews
Check prices

Overall

8.1

Boarding

8.2

Crew

8.6

Entertainment

8.0

Comfort

8.0

Food

7.7

Reviews

1 / 20
10.0
Excellent

Anonymous,Sept 2025

BCN - SIN

Staff at Barcelona were fantastic, they helped me change a flight and nothing was any problem. Thank you Dina.

FAQs about flying to Southeast Asia

  • Can I find cheaper flights to Southeast Asia if I am willing to have stopovers?

    Yes, flights with stopovers are often cheaper than direct flights. Keep an eye out for flight deals to Southeast Asia on Cheapflights that require 1 or 2 stops for potential cost savings.

  • What is the best airline to fly to Southeast Asia?

    Based on reviews from Cheapflights users, Hahn Air is rated the highest out of the airlines that fly to Southeast Asia.

  • How much is a return flight to Southeast Asia?

    A return flight to Southeast Asia will typically cost around £85, however they can be found for as little as £28.

  • Where does the fastest flight to Southeast Asia depart from?

    For those looking to save time traveling to Southeast Asia, London offers the quickest one-way flight (11 hours 15 minutes).

  • Does Bangkok Suvarnabhumi have car hire?

    Yes. Those touching down at Bangkok Suvarnabhumi can take advantage of the car hire services offered upon their arrival.

  • Are there hotels close to Bangkok Suvarnabhumi?

    Yes. Bangkok Suvarnabhumi has hotels nearby for those requiring accommodations. Louis Tavern Dayrooms At Suvarnabhumi Airport is the closest property to Bangkok Suvarnabhumi (0.0 mi away from Bangkok Suvarnabhumi).

See more FAQs

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Fly with Cheapflights

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How does Cheapflights help users find flights to Southeast Asia?

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Why should you use Cheapflights to find cheap flight tickets to Southeast Asia?

Millions of users choose and trust Cheapflights to book the best flight deals to Southeast Asia for free. We help you search and compare prices from hundreds of airlines for the right flight just for you.

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

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

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

Not ready to book yet? You can track prices for flights to Southeast Asia on Cheapflights with our Price Alerts feature and get notified when better prices are available.

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