Find flights
Deals
Airlines

£305+ 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 1/12. Fares are subject to change and may not be available on all flights or dates of travel.
— BKK
14 Dec — 21 Dec1
1 adult
1 adult, Economy, 0 bags

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 14 November 2025.

Return from

£464

One-way from

£305

Popular in

December

Cheapest in

May

Average price

£607
China Eastern
  • China Eastern
  • 1/12-15/12
  • 3 total stops
  • 48h 05m total
  • London to Bangkok
Search Deals
Air China
  • Air China
  • 1/12
  • 1 total stop
  • 18h 35m total
  • London to Southeast Asia
Search Deals
Highest demand for flights based on searches. 8% potential increase in price (£61 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (£22 potential savings vs. average return price).
Search Deals
Average for return flights in November 2025
Search Deals

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 14 November 2025
Explore Southeast Asia
Flights to Bangkok
Flights to Manila
Flights to Kuala Lumpur
Flights to Denpasar
Flights to Phuket City
Flights to Singapore
Flights to Ho Chi Minh City
Flights to Cebu City
Flights to Hanoi
Flights to Angeles City
Flights to Jakarta
Flights to Ko Samui
Flights to Davao City
Flights to Penang
Flights to Krabi
Flights to Chiang Mai
Flights to Da Nang
Flights to Kota Kinabalu
Flights to Boracay

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 14 November 2025.

Fri 21/1110:30LGW - BKK
2 stops26h 40mChina Eastern
Fri 5/1201:55BKK - LGW
1 stop19h 05mChina Eastern
Deal found 12/11£464
Sun 23/1117:15LHR - BKK
2 stops33h 55mChina Southern
Tue 2/1215:45BKK - LHR
1 stop33h 50mChina Southern
Deal found 12/11£464
Thu 13/1110:30LGW - BKK
2 stops21h 25mChina Eastern
Fri 5/1219:05BKK - LGW
1 stop18h 25mChina Eastern
Deal found 12/11£465
Fri 21/1121:00LHR - BKK
2 stops30h 05mHainan Airlines
Sat 13/1219:10BKK - LHR
1 stop29h 45mHainan Airlines
Deal found 12/11£465
Wed 26/1108:05STN - BKK
2 stops24h 20mMultiple Airlines
Sun 7/1218:45BKK - STN
1 stop30h 50mMultiple Airlines
Deal found 12/11£465
Tue 2/1209:15LGW - BKK
1 stop34h 20mMultiple Airlines
Mon 8/1212:30BKK - LGW
Nonstop13h 00mMultiple Airlines
Deal found 11/11£466
Mon 8/1221:00LHR - BKK
2 stops30h 05mHainan Airlines
Sat 20/1219:10BKK - LHR
1 stop29h 45mHainan Airlines
Deal found 11/11£466
Wed 12/1117:40LHR - BKK
1 stop17h 25mAir China
Tue 25/1101:30BKK - LHR
1 stop21h 25mAir China
Deal found 10/11£467
Sat 22/1115:40LGW - BKK
1 stop14h 25mMultiple Airlines
Mon 1/1212:30BKK - LGW
Nonstop13h 00mMultiple Airlines
Deal found 12/11£467
Tue 25/1117:40LHR - BKK
1 stop17h 25mAir China
Wed 3/1201:30BKK - LHR
1 stop21h 25mAir China
Deal found 12/11£467
Tue 25/1116:00LGW - BKK
Nonstop11h 25mNorse Atlantic UK
Wed 3/1212:30BKK - LGW
Nonstop13h 00mNorse Atlantic UK
Deal found 12/11£468
Mon 24/1122:00LHR - BKK
1 stop36h 55mChina Southern
Sat 13/1213:55BKK - LHR
2 stops31h 05mChina Southern
Deal found 12/11£468

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 14 November 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

LGW - BKK

LGWBKK

London Gatwick

Wed 3/12

11:05-01:30

1 stop31h 25m

Bangkok Suvarnabhumi

Mon 2/3

02:30-06:55

1 stop35h 25m

£475

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Fri 6/2

21:10-18:30

1 stop38h 20m

Bangkok Suvarnabhumi

Sat 28/2

03:15-19:10

1 stop22h 55m

£484

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Mon 2/2

21:10-02:15

1 stop22h 05m

Bangkok Suvarnabhumi

Sat 21/3

03:15-19:10

1 stop22h 55m

£484

LondonBangkok

LTN - BKK

LTNBKK

London Luton

Wed 3/12

09:15-00:10

2 stops31h 55m

Bangkok Suvarnabhumi

Thu 11/12

19:30-20:55

2 stops32h 25m

£487

LondonKuala Lumpur

LHR - KUL

LHRKUL

London Heathrow

Tue 25/11

15:45-15:40

1 stop15h 55m

Kuala Lumpur Intl

Sun 7/12

23:50-09:00

1 stop17h 10m

£491

LondonSingapore

LHR - SIN

LHRSIN

London Heathrow

Thu 19/3

18:40-18:00

1 stop15h 20m

Singapore Changi

Sun 22/3

00:05-16:20

1 stop24h 15m

£492

LondonSingapore

LHR - SIN

LHRSIN

London Heathrow

Tue 3/3

14:25-18:00

2 stops19h 35m

Singapore Changi

Mon 9/3

00:05-08:05

1 stop16h 00m

£508

LondonKuala Lumpur

LHR - KUL

LHRKUL

London Heathrow

Fri 16/1

21:10-19:30

1 stop38h 20m

Kuala Lumpur Intl

Sat 31/1

04:20-19:10

1 stop22h 50m

£514

LondonBangkok

LGW - BKK

LGWBKK

London Gatwick

Sun 23/11

10:30-12:20

1 stop18h 50m

Bangkok Suvarnabhumi

Fri 5/12

15:05-06:30

2 stops22h 25m

£523

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Wed 26/11

20:55-11:45

1 stop31h 50m

Bangkok Suvarnabhumi

Mon 1/12

02:55-06:40

1 stop34h 45m

£543

Flights are sorted by cheapest return flights first.

Deals found on 12/11

Showing 1-10 of 60 results
1
2
3
...
6

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 23 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 Wednesday 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 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).

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 £347
Qatar Airways
Qatar Airways
From £445
Etihad Airways
Etihad Airways
From £444
Thai Airways
Thai Airways
From £502

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 China Eastern.

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 14 November 2025.
Read through reviews of airlines serving Southeast Asia, such as Singapore Airlines, Cathay Pacific, andChina Southern. 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
1,401 reviews
Check prices

Comfort

8.0

Crew

8.6

Boarding

8.3

Food

7.8

Overall

8.1

Entertainment

8.0

Reviews

1 / 20
10.0
Excellent

Juliet,Oct 2025

PUS - SIN

Very kind staff to arrange my luggage and really appreciate all help.
Singapore Airlines
8.1
Very Good
1,401 reviews
Singapore Airlines
8.1
Very Good
1,401 reviews
Check prices

Comfort

8.0

Crew

8.6

Boarding

8.3

Food

7.8

Overall

8.1

Entertainment

8.0

Reviews

1 / 20
10.0
Excellent

Juliet,Oct 2025

PUS - SIN

Very kind staff to arrange my luggage and really appreciate all help.
Cathay Pacific
7.6
Good
1,058 reviews
Singapore Airlines
8.1
Very Good
1,401 reviews
Check prices

Comfort

8.0

Crew

8.6

Boarding

8.3

Food

7.8

Overall

8.1

Entertainment

8.0

Reviews

1 / 20
10.0
Excellent

Juliet,Oct 2025

PUS - SIN

Very kind staff to arrange my luggage and really appreciate all help.
China Southern
7.5
Good
119 reviews
Singapore Airlines
8.1
Very Good
1,401 reviews
Check prices

Comfort

8.0

Crew

8.6

Boarding

8.3

Food

7.8

Overall

8.1

Entertainment

8.0

Reviews

1 / 20
10.0
Excellent

Juliet,Oct 2025

PUS - SIN

Very kind staff to arrange my luggage and really appreciate all help.
Qatar Airways
7.4
Good
3,661 reviews
Singapore Airlines
8.1
Very Good
1,401 reviews
Check prices

Comfort

8.0

Crew

8.6

Boarding

8.3

Food

7.8

Overall

8.1

Entertainment

8.0

Reviews

1 / 20
10.0
Excellent

Juliet,Oct 2025

PUS - SIN

Very kind staff to arrange my luggage and really appreciate all help.
Air China
7.1
Good
121 reviews
Singapore Airlines
8.1
Very Good
1,401 reviews
Check prices

Comfort

8.0

Crew

8.6

Boarding

8.3

Food

7.8

Overall

8.1

Entertainment

8.0

Reviews

1 / 20
10.0
Excellent

Juliet,Oct 2025

PUS - SIN

Very kind staff to arrange my luggage and really appreciate all help.

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 £71, however they can be found for as little as £41.

  • 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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Search flights to Southeast Asia by cabin class

Find flights to Southeast Asia, based on your preferred cabin class, be it economy, premium economy, business, or first class.
First Class
Business Class
Prem Econ Class
Economy class

Fly with Cheapflights

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

How does Cheapflights help users find flights to Southeast Asia?

900+ travel sites are searched through when a user searches for a flight using Cheapflights. From the search interface, users can use filters to choose airlines, airports, flight times, cabin classes and more to their preference. Book your flight to Southeast Asia today with Cheapflights!

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.

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.