What is the cheapest airline that flies from London to Southeast Asia?

United Airlines, Air Canada, and Emirates are the most popular carriers operating from London to Southeast Asia

Which airlines fly to Southeast Asia?

Cathay Pacific, United Airlines and Philippine Airlines are the top three most popular airlines that fly to Southeast Asia from London, Ontario according to our data. Cathay Pacific is the first choice among our users, with 29% of people opting to fly with this airline when travelling to Southeast Asia. Keep in mind that there are 27 different airlines that fly to Southeast Asia on a routine basis, so you have a few additional options to choose from.

When did momondo last update prices for flights from London Airport to Southeast Asia?

Prices for flights from London Airport to Southeast Asia are updated daily.

How many operators does momondo search for flights from London Airport to Southeast Asia?

The number of operators available for flights from London Airport to Southeast Asia is 1 as of February 2026.

How old do you have to be to fly from London Airport to Southeast Asia?

The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from London Airport to Southeast Asia.

What documentation or ID do you need to fly to Southeast Asia?

The travel and health documents required for your trip to Southeast Asia can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Southeast Asia. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

C$ 677 Cheap Flights from London to Southeast Asia in 2026

1 adult

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Find the cheapest flights from London, Ontario to Southeast Asia

Round-trip

One-way

Cheap round-trip flights

Enter your travel dates to find the best prices.

5:40 p.m. - 6:35 p.m.

YXU

SIN

36h 55m

2 stops

9:00 a.m. - 5:03 p.m.

SIN

YXU

44h 03m

2 stops

C$ 1,220United Airlines

Sun, 19 Apr - Thu, 23 Apr

5:40 p.m. - 6:35 p.m.

YXU

SIN

36h 55m

2 stops

9:00 a.m. - 8:43 a.m.

SIN

YXU

35h 43m

2 stops

C$ 1,221United Airlines

Sun, 19 Apr - Thu, 23 Apr

5:40 p.m. - 6:35 p.m.

YXU

SIN

36h 55m

2 stops

8:35 p.m. - 8:43 a.m.

SIN

YXU

48h 08m

2 stops

C$ 1,223United Airlines

Sun, 19 Apr - Thu, 23 Apr

United Airlines flights from London, Ontario to Southeast Asia

Our best United Airlines deals on London, Ontario to Southeast Asia flight tickets

United Airlines

19 Apr

YXU5:40 p.m.London

36h 55m

2 stops

SIN6:35 p.m.Singapore Changi

23 Apr

SIN9:00 a.m.Singapore Changi

44h 03m

2 stops

YXU5:03 p.m.London

C$ 1,220

United Airlines

19 Apr

YXU5:40 p.m.London

36h 55m

2 stops

SIN6:35 p.m.Singapore Changi

23 Apr

SIN9:00 a.m.Singapore Changi

35h 43m

2 stops

YXU8:43 a.m.London

C$ 1,221

United Airlines

19 Apr

YXU5:40 p.m.London

36h 55m

2 stops

SIN6:35 p.m.Singapore Changi

23 Apr

SIN8:35 p.m.Singapore Changi

48h 08m

2 stops

YXU8:43 a.m.London

C$ 1,223

momondo Fare Finder

Use the filters below to find and compare flights from London, Ontario to Southeast Asia that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

LondonSingapore

YXU - SIN

YXUSIN

London

Sun 19/4

5:40 p.m.-6:35 p.m.

2 stops36h 55m

Singapore Changi

Thu 23/4

9:00 a.m.-5:03 p.m.

2 stops44h 03m

C$ 1,220

LondonSingapore

YXU - SIN

YXUSIN

London

Sun 19/4

5:40 p.m.-6:35 p.m.

2 stops36h 55m

Singapore Changi

Thu 23/4

9:00 a.m.-8:43 a.m.

2 stops35h 43m

C$ 1,221

LondonSingapore

YXU - SIN

YXUSIN

London

Sun 19/4

5:40 p.m.-6:35 p.m.

2 stops36h 55m

Singapore Changi

Thu 23/4

8:35 p.m.-8:43 a.m.

2 stops48h 08m

C$ 1,223

LondonSingapore

YXU - SIN

YXUSIN

London

Sun 12/4

9:25 a.m.-6:35 p.m.

2 stops69h 10m

C$ 677

LondonSingapore

YXU - SIN

YXUSIN

London

Fri 10/4

5:40 p.m.-6:35 p.m.

3 stops60h 55m

C$ 722

LondonSingapore

YXU - SIN

YXUSIN

London

Sun 12/4

8:10 p.m.-6:40 a.m.

3 stops46h 30m

C$ 732

LondonSingapore

YXU - SIN

YXUSIN

London

Sat 11/4

5:40 p.m.-5:15 a.m.

2 stops47h 35m

C$ 740

LondonBangkok

YXU - BKK

YXUBKK

London

Thu 9/4

5:10 a.m.-9:35 a.m.

3 stops41h 25m

C$ 1,194

LondonBangkok

YXU - BKK

YXUBKK

London

Thu 9/4

9:25 a.m.-1:10 p.m.

2 stops40h 45m

C$ 1,347

LondonBangkok

YXU - BKK

YXUBKK

London

Sun 12/4

9:25 a.m.-5:05 a.m.

2 stops56h 40m

C$ 2,041

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 12 resultsSorted by cheapest first

How to get the cheapest flight ticket from London, Ontario to Southeast Asia

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

Can stopping save me money on London, Ontario to Southeast Asia flights?

No. A direct flight is the cheapest option for a flight between London, Ontario to Southeast Asia.

Cheap London, Ontario to Southeast Asia flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from London, Ontario to Southeast Asia

Fastest flight time	33h 30m
Direct flights	None

The fastest flight from London, Ontario to Southeast Asia takes 33h 30m

There are no direct flights from London, Ontario to Southeast Asia. There are no popular flight routes from London, Ontario to Southeast Asia.

Search flight deals

When did momondo last update prices for flights from London Airport to Southeast Asia?
Prices for flights from London Airport to Southeast Asia are updated daily.
How many operators does momondo search for flights from London Airport to Southeast Asia?
The number of operators available for flights from London Airport to Southeast Asia is 1 as of February 2026.
How old do you have to be to fly from London Airport to Southeast Asia?
The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from London Airport to Southeast Asia.
What documentation or ID do you need to fly to Southeast Asia?
The travel and health documents required for your trip to Southeast Asia can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Southeast Asia. We always recommend checking with your airline or a trusted third party such as IATA to get advice.
What is the most popular plane model from London, Ontario to Southeast Asia?
Based on momondo bookings for flights between London, Ontario and Southeast Asia, the leading plane model is Embraer 195 E2, making up 35.38% of the total bookings. Other popular models include Boeing 737 MAX 8 with 34.12%, Airbus A321-100/200 with 7.40%, and Boeing 737-800 Passenger/BBJ2 (winglets) with 4.33%.

Best airlines flying from London, Ontario to Southeast Asia

Compare and see reviews for airlines that fly from London, Ontario to Southeast Asia with momondo

Airline	Rating	Free Cancellation	Price
United Airlines	PriceFrom C$ 1,170	Free Cancellation	Rating 7.4 9,349 reviews		Search United Airlines flights

Why use momondo?

Why should I use momondo to find a flight deal from London to Southeast Asia?

Finding the right flight to Southeast Asia from London is quick and easy when you have a range of options in front of you, from reputable agents and recognizable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Southeast Asia quick and easy, saving you time and money.

Can I find flights from London to Southeast Asia with flexible booking policies on momondo?

momondo does allow users to show only those flights to Southeast Asia from London which offer a flexible booking policy as well as other useful filters and features.

How can momondo help me find flights from London to Southeast Asia?

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Southeast Asia from London.

I’m not ready to book a flight from London to Southeast Asia right now. Can momondo alert me if prices change?

Price alerts on flights to Southeast Asia from London are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.