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£291+ 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 26/6. Fares are subject to change and may not be available on all flights or dates of travel.
— BKK
24 Jun — 1 Jul1
1 adult

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 19 June 2025.

Return from

£425

One-way from

£291

Popular in

December

Cheapest in

May

Average price

£568
Shenzhen Airlines
  • Shenzhen Airlines
  • 17/11-22/11
  • 2 total stops
  • 54h 05m total
  • London to Bangkok
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26/6
  • 26/6
  • 3 total stops
  • 53h 10m total
  • London to Southeast Asia
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Highest demand for flights based on searches. 8% potential increase in price (£43 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 June 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 19 June 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

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 19 June 2025.

Tue 23/918:00LGW - BKK
1 stop18h 05mChina Eastern
Tue 14/1021:55BKK - LGW
1 stop23h 05mChina Eastern
Deal found 18/6£434
Fri 19/922:10LHR - BKK
1 stop32h 40mChina Southern
Tue 11/1102:10BKK - LHR
1 stop23h 05mChina Southern
Deal found 17/6£434
Sun 9/1121:10LHR - BKK
1 stop21h 40mShenzhen Airlines
Sat 29/1119:30BKK - LHR
1 stop30h 40mShenzhen Airlines
Deal found 18/6£436
Mon 23/622:00LHR - BKK
2 stops30h 00mHainan Airlines
Tue 22/701:30BKK - LHR
1 stop24h 00mHainan Airlines
Deal found 17/6£441
Fri 20/621:20LHR - BKK
1 stop17h 35mChina Eastern
Wed 2/702:10BKK - LHR
1 stop22h 30mChina Eastern
Deal found 18/6£442
Mon 8/908:50LGW - BKK
2 stops30h 05mMultiple Airlines
Mon 22/905:05BKK - LGW
2 stops33h 10mMultiple Airlines
Deal found 18/6£446
Mon 8/907:05STN - BKK
2 stops31h 50mMultiple Airlines
Mon 22/905:05BKK - STN
2 stops24h 54mMultiple Airlines
Deal found 18/6£446
Mon 29/1211:40LGW - BKK
1 stop30h 00mAir China
Fri 30/101:30BKK - LGW
1 stop35h 05mAir China
Deal found 18/6£447
Tue 4/1120:25LHR - BKK
1 stop20h 45mAir China
Sun 30/1119:30BKK - LHR
1 stop27h 25mAir China
Deal found 18/6£453
Tue 4/1117:40LHR - SIN
1 stop29h 10mAir China
Tue 25/1123:55SIN - LHR
1 stop24h 00mAir China
Deal found 16/6£461
Tue 23/912:30LHR - BKK
1 stop15h 40mAir India
Sun 12/1020:50BKK - LHR
1 stop19h 25mAir India
Deal found 18/6£462
Sat 6/906:30LTN - BKK
3 stops34h 10mMultiple Airlines
Sat 20/923:40BKK - LTN
2 stops28h 05mMultiple Airlines
Deal found 18/6£462

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 19 June 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

Tue 23/9

18:00-18:05

1 stop18h 05m

Bangkok Suvarnabhumi

Tue 14/10

21:55-15:00

1 stop23h 05m

£434

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Fri 19/9

22:10-12:50

1 stop32h 40m

Bangkok Suvarnabhumi

Tue 11/11

02:10-18:15

1 stop23h 05m

£434

LondonBangkok

LGW - BKK

LGWBKK

London Gatwick

Tue 11/11

11:40-00:40

1 stop30h 00m

Bangkok Suvarnabhumi

Tue 25/11

01:40-06:55

1 stop36h 15m

£434

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Sun 9/11

21:10-01:50

1 stop21h 40m

Bangkok Suvarnabhumi

Sat 29/11

19:30-19:10

1 stop30h 40m

£436

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Fri 5/9

22:00-10:00

2 stops30h 00m

Bangkok Suvarnabhumi

Thu 2/10

01:30-19:30

2 stops24h 00m

£441

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Mon 15/9

21:20-00:40

1 stop21h 20m

Bangkok Suvarnabhumi

Mon 13/10

13:35-18:40

1 stop35h 05m

£442

LondonBangkok

LGW - BKK

LGWBKK

London Gatwick

Mon 8/9

08:50-20:55

2 stops30h 05m

Bangkok Suvarnabhumi

Mon 22/9

05:05-08:15

2 stops33h 10m

£446

LondonBangkok

STN - BKK

STNBKK

London Stansted

Mon 8/9

07:05-20:55

2 stops31h 50m

Bangkok Suvarnabhumi

Mon 22/9

05:05-23:59

2 stops24h 54m

£446

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Tue 4/11

20:25-00:10

1 stop20h 45m

Bangkok Suvarnabhumi

Sun 30/11

19:30-15:55

1 stop27h 25m

£453

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Tue 23/9

12:30-10:10

1 stop15h 40m

Bangkok Suvarnabhumi

Sun 12/10

20:50-10:15

1 stop19h 25m

£462

Flights are sorted by cheapest return flights first.

Deals found on 18/6

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 24 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 Friday mornings, 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 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 £655
Qatar Airways
Qatar Airways
From £622
Thai Airways
Thai Airways
From £661
Singapore Airlines
Singapore Airlines
From £434

What are the cheapest airlines that fly to Southeast Asia?

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

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 19 June 2025.
Peruse reviews from past customers who have flown Hainan Airlines, Singapore Airlines and Emirates to Southeast Asia to help guide your decision. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Hainan Airlines
8.1
Very Good
39 reviews
Check prices

Overall

8.1

Entertainment

7.7

Boarding

8.6

Food

8.5

Comfort

8.1

Crew

8.9

Reviews

1 / 2
10.0
Excellent

Anonymous,Mar 2025

CAN - PEK

Excellent services. The staff were amazing. Although if there was something that I could suggest to improve the services I’d say that snacks and drinks should be offered in between meals. Other than that then it was a lovely flight.
Hainan Airlines
8.1
Very Good
39 reviews
Hainan Airlines
8.1
Very Good
39 reviews
Check prices

Overall

8.1

Entertainment

7.7

Boarding

8.6

Food

8.5

Comfort

8.1

Crew

8.9

Reviews

1 / 2
10.0
Excellent

Anonymous,Mar 2025

CAN - PEK

Excellent services. The staff were amazing. Although if there was something that I could suggest to improve the services I’d say that snacks and drinks should be offered in between meals. Other than that then it was a lovely flight.
Singapore Airlines
8.1
Very Good
1,310 reviews
Hainan Airlines
8.1
Very Good
39 reviews
Check prices

Overall

8.1

Entertainment

7.7

Boarding

8.6

Food

8.5

Comfort

8.1

Crew

8.9

Reviews

1 / 2
10.0
Excellent

Anonymous,Mar 2025

CAN - PEK

Excellent services. The staff were amazing. Although if there was something that I could suggest to improve the services I’d say that snacks and drinks should be offered in between meals. Other than that then it was a lovely flight.
Emirates
8.1
Very Good
3,274 reviews
Hainan Airlines
8.1
Very Good
39 reviews
Check prices

Overall

8.1

Entertainment

7.7

Boarding

8.6

Food

8.5

Comfort

8.1

Crew

8.9

Reviews

1 / 2
10.0
Excellent

Anonymous,Mar 2025

CAN - PEK

Excellent services. The staff were amazing. Although if there was something that I could suggest to improve the services I’d say that snacks and drinks should be offered in between meals. Other than that then it was a lovely flight.
KLM
7.8
Good
1,365 reviews
Hainan Airlines
8.1
Very Good
39 reviews
Check prices

Overall

8.1

Entertainment

7.7

Boarding

8.6

Food

8.5

Comfort

8.1

Crew

8.9

Reviews

1 / 2
10.0
Excellent

Anonymous,Mar 2025

CAN - PEK

Excellent services. The staff were amazing. Although if there was something that I could suggest to improve the services I’d say that snacks and drinks should be offered in between meals. Other than that then it was a lovely flight.

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, Turkmenistan Airlines 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 £31, however they can be found for as little as £20.

  • 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 20 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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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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