RM 1,389 Find Cheap Flights from Portugal to Southeast Asia

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KAYAK searches hundreds of travel sites at once for deals on flights to Southeast Asia

 
These are the airlines KAYAK users have selected most often from within our search results for flights to Southeast Asia, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results for flights to Southeast Asia, as well as popular online travel agencies
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KAYAK's insights & trends for flights to Southeast Asia

Get data-powered insights and trends for flights to Southeast Asia to help you find the cheapest flights, the best time to fly and much more.

What is the cheapest day to fly to Southeast Asia?

The average price of all flights from Portugal to Southeast Asia clicked on KAYAK for each day over the last 12 months.
Based on KAYAK data, the cheapest day to fly to Southeast Asia is Wednesday when return tickets can be as cheap as RM 3,110. On the other hand, the most expensive day to fly is Wednesday, when return prices are RM 3,110 on average.

What is the cheapest month to fly from Portugal to Southeast Asia?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for flights from Portugal to Southeast Asia, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.
The cheapest month for flights from Portugal to Southeast Asia is September, when tickets cost RM 3,595 (return) on average. On the other hand, the most expensive months are April and December, when the average cost of round-trip tickets is RM 5,179 and RM 4,945 respectively.

What is the cheapest time of day to fly to Southeast Asia?

The average price for all round-trip flights from Portugal to Southeast Asia depending on the time of departure, clicked by users on KAYAK in the last 2 weeks.
The cheapest time of day to fly to Southeast Asia is generally in the afternoon, when round-trip flights cost RM 735 on average. The most expensive time of day to fly to Southeast Asia is generally in the morning, which is peak travel time and where the average cost of a ticket is RM 895.

How far in advance should I book a flight from Portugal to Southeast Asia?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights to Southeast Asia, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.
To get a below-average price on the flight from Portugal to Southeast Asia, you should book around 5 weeks before departure. For the absolute cheapest price, our data suggests you should book 20 weeks before departure.

Good to know

Low season

May

High season

November

Cheapest flight

RM 1,389
Best time to beat the crowds (14% less expensive on average)
Most popular time to fly and prices are also 6% lower on average.
Flight from Porto to Kuala Lumpur

FAQs for booking flights from Portugal to Southeast Asia

  • How does KAYAK find such low prices on flights from Portugal to Southeast Asia?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Portugal to Southeast Asia.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Portugal to Southeast Asia?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from Portugal to Southeast Asia is likely to change within 7 days, so travellers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Portugal to Southeast Asia?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional return ticket. You could then fly from Portugal to Southeast Asia with an airline and back with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Portugal to Southeast Asia?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying from Portugal to Southeast Asia up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Top airline flying from Portugal to Southeast Asia

 
See real verified KAYAK customer reviews for airlines flying to Southeast Asia. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline from Portugal to Southeast Asia. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Portugal to Southeast Asia? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
6.6
British AirwaysOverall score based on 6837 reviews
6.8Boarding
6.7Comfort
6.3Food
7.6Crew
6.4Entertainment
Airline reviews

The airplane was old. Some things didn’t work out of middle seat was broken. The rest was OK.

6.0 GoodAnonymous, Apr 2025LGW - AGP
Read more British Airways reviews

The airplane was old. Some things didn’t work out of middle seat was broken. The rest was OK.

British Airways provided prompt service and maintained excellent cleanliness throughout the flight. However, the business class seats felt tight, and the cabin temperature was uncomfortably warm, making it difficult to sleep. Since I couldn’t rest, I turned to the in-flight entertainment, but the selection was heavily focused on Paramount content, which isn’t my preference. I also found the Bollywood movie options quite limited compared to other airlines. On the positive side, the spirits selection was impressive, and the staff was exceptionally friendly and attentive.

The crew were professional and friendly. It was the most uncomfortable international flight I've ever flown. Crammed in passengers. No overhead space to put my bag. No leg room and unable to recline seat due to seats too close together so it upset passenger behind me! Upgrade price to get 2 inches of more space unreasonable.

It was just ok. Half the bathrooms were broke on the flight.

Aer Lingus was the actual airline so they handled everything professionally.

Didn’t make flight and then forced on connecting flights back to LA that cost me another day of travel on an inferior experience.

Great job notifying of 30 minute delay in departure. Fabulous job making up for the time and arriving as scheduled. Air travel is just no fun anymore with the extreme overcrowding, and someone needs to come up with an innovative plan for loading and unloading passengers (load all window seats first, middle seats second, aisle seats last?). Great job getting the luggage on the carousel in record time!

Need a do not disturb sign if you wish not to have any meals so that they can wake you or have the meals served . Left very sad and hungry .

I am 70 with carry on bag. Was told to go down two flights of stairs the had to climb stairs at rear of plane. Skywalk to front of plane was not offered. I was in row 26

It would be great to have at least two choices for a food, instead of just plain pasta 😏

Book cheap flights from Portugal to Southeast Asia

Recent return flight deals

 
These are the cheapest return flights to Southeast Asia found on KAYAK in the last 72 hours.
29/5Thu
2 stops
36h 00mLIS-KUL
11/6Wed
2 stops
31h 10mKUL-LIS
RM 3,158
29/5Thu
1 stopBritish Airways
17h 50mLIS-KUL
11/6Wed
1 stopBritish Airways
22h 15mKUL-LIS
RM 3,245
11/6Wed
2 stopsIberia
26h 45mLIS-KUL
18/6Wed
1 stopIberia
31h 00mKUL-LIS
RM 3,362
11/6Wed
2 stopsIberia
26h 45mLIS-KUL
18/6Wed
2 stopsIberia
20h 55mKUL-LIS
RM 3,405
15/5Thu
2 stopsQatar Airways
21h 20mOPO-KUL
19/5Mon
2 stopsQatar Airways
30h 35mKUL-OPO
RM 3,855
17/10Fri
2 stopsQatar Airways
26h 50mOPO-KUL
27/10Mon
2 stopsQatar Airways
37h 15mKUL-OPO
RM 4,075
24/8Sun
1 stopTurkish Airlines
23h 20mOPO-KUL
8/9Mon
1 stopTurkish Airlines
17h 05mKUL-OPO
RM 4,326
15/5Thu
1 stopTurkish Airlines
23h 00mOPO-KUL
19/5Mon
1 stopTurkish Airlines
36h 00mKUL-OPO
RM 4,391
7/6Sat
1 stopKLM
21h 00mLIS-KUL
21/6Sat
1 stopKLM
25h 45mKUL-LIS
RM 4,569
17/10Fri
1 stopKLM
26h 00mOPO-KUL
28/10Tue
2 stopsKLM
19h 00mKUL-OPO
RM 4,850

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Recent one-way flight deals

 
Only flying one-way? Below are some of the best deals for one-way flights to Southeast Asia found on KAYAK in the last 72 hours.
26/5Mon
3 stops
50h 00mOPO-KUL
RM 1,389
27/5Tue
2 stops
26h 25mLIS-KUL
RM 1,423
27/5Tue
2 stops
29h 05mOPO-KUL
RM 1,441
27/5Tue
1 stopEtihad Airways
16h 00mLIS-KUL
RM 2,129
28/5Wed
1 stopEtihad Airways
27h 55mLIS-KUL
RM 2,254
27/5Tue
1 stopTurkish Airlines
17h 15mOPO-KUL
RM 3,383
15/7Tue
2 stopsIberia
25h 35mLIS-KUL
RM 3,526
28/5Wed
1 stopTurkish Airlines
23h 15mOPO-KUL
RM 3,595
27/5Tue
4 stopsEthiopian Air
42h 05mLIS-KUL
RM 4,352
27/5Tue
3 stopsEthiopian Air
42h 40mLIS-KUL
RM 4,413

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Last minute flights to Southeast Asia

Last minute flight, train and bus deals

 
These last-minute flight deals are the cheapest flights found on KAYAK in the last 72 hours for flights to Southeast Asia that are departing in the next 10 days.
4/5Sun
multi-stopBritish Airways
17h 10mLIS-KUL
20/5Tue
multi-stopBritish Airways
18h 15mKUL-LIS
RM 3,240
3/5Sat
multi-stopBritish Airways
23h 40mOPO-KUL
18/5Sun
multi-stopBritish Airways
28h 30mKUL-OPO
RM 3,336
1/5Thu
multi-stopBritish Airways
17h 50mLIS-KUL
17/5Sat
multi-stopBritish Airways
29h 55mKUL-LIS
RM 3,362
4/5Sun
multi-stop
33h 10mLIS-KUL
20/5Tue
multi-stop
29h 30mKUL-LIS
RM 3,517
4/5Sun
multi-stop
30h 45mLIS-KUL
20/5Tue
multi-stop
22h 45mKUL-LIS
RM 3,928
1/5Thu
multi-stopIberia
28h 05mLIS-KUL
14/5Wed
multi-stopIberia
29h 15mKUL-LIS
RM 5,546
1/5Thu
multi-stopQatar Airways
33h 35mLIS-KUL
13/5Tue
multi-stopQatar Airways
35h 00mKUL-LIS
RM 6,191
1/5Thu
multi-stopEmirates
35h 25mLIS-KUL
13/5Tue
multi-stopEmirates
24h 40mKUL-LIS
RM 6,252
4/5Sun
multi-stopEmirates
24h 35mLIS-KUL
19/5Mon
multi-stopEmirates
24h 40mKUL-LIS
RM 6,403
1/5Thu
multi-stopQatar Airways
21h 25mLIS-KUL
16/5Fri
multi-stopQatar Airways
22h 10mKUL-LIS
RM 12,019

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Everything you need to know for your flight to Southeast Asia

Cabin class types available on flights to Southeast Asia

Cabin classes available on flights to Southeast Asia. Prices are the lowest found on KAYAK over the last 7 days. Price and availability is not guaranteed.

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