GoodNonstop · 4h
KUL to HKG
Hong Kong
$181
usually $255
−29%
Most monthly lows $189–$264. Cheaper than every other month on record (5).
Flights · KUL → OPO
Kuala Lumpur to Porto
Best fare, round trip
$748
Too little price history on this route to compare — the fare is shown as found.
Found
- Depart
- Wed 25 Nov
- Return
- Sat 5 Dec
- Stay
- 10 nights
- Flight
- 2 stops · 20.5h
- Airline
Air China
Cached fare — the booking search re-prices live before you pay.
PortugalPortoGranite, port wine and a river gorge through the middle — cheaper and steeper than Lisbon.Best windowMay–Jun · Sep–OctAirportsFrancisco Sá Carneiro (OPO)Every route into PortoFare seasonality
When this route gets cheap.
The cheapest itinerary we are tracking makes 2 stops and takes about 20.5 hours outbound, on a 10-night trip — ticketed under Air China, which on a connecting fare need not operate every leg. At $748 for 11,453 km each way, that works out to about $33 per 1,000 km flown. That is below the $42 per 1,000 km typical of ultra-long-haul fares here. Across the 8 departure cities we track at a similar distance from Porto, this fare ranks 3rd — 17% above the $639 from Bangkok. For context, the middle fare among the 27 routes of similar length we watch out of Kuala Lumpur is $713. We have 1 month of cached prices for this route so far — not enough to call a fare cheap or expensive, so we publish the price without a percentage. Fare history here is still too short to name a cheap season. The best time to be in Porto: May–Jun · Sep–Oct.
The one day we hold a cached fare for
Press a date to compare its fares
The median cached fare across this calendar is 5% lower than when tracking began on 8 Aug — $790 then versus $748 now, across 4 recorded snapshots. This is a calendar-level trend, so an individual deal above can be lower. The lowest single day we have seen here is $748, on 25 Nov.
These are the only days we have a cached price for on this route so far — not the only days it flies. The search above covers any date.
Cached fares · checked 09 Oct 2026
We are still collecting this route's months — 1 month of cached prices so far, too few to chart.
Route facts
- Airports
- Kuala Lumpur (KUL) · Subang (SZB) ↔ Francisco Sá Carneiro (OPO)
- Flight time
- ≈20.5 hours outbound
- Distance
- ≈11,453 km each way
- Airlines on the board
- Air China
- Itineraries
- Connections on current fares
- Best months to visit
- May–Jun · Sep–Oct
Good to know
KUL → OPO, answered.
How far in advance should I book KUL → Porto?
We do not publish a number for this, because we cannot measure it yet. Answering it honestly means watching the same departure date on this route over many weeks as it approaches, and that archive is still filling up — so any "book N days ahead" figure here would be borrowed from somewhere else rather than measured. Our guide Why flight prices change covers the levers we can measure.
Are there nonstop flights from Kuala Lumpur to Porto?
The current cheapest fares involve a connection, ticketed under Air China. We hold no nonstop fare on this route right now, which does not mean none flies — search your exact dates to see what does.
Are these prices guaranteed?
No — these are cached fares found on real searches (this one on 10 October). Airlines reprice constantly, so the booking search re-checks the live price before you pay. Fresher finds are far more likely to still be available.
Next step
Sleeping in Porto?
Lock the flight first — then compare stays for 25 Nov – 5 Dec · 10 nights.
Browse hotelsMissed it?
Cached fares expire. This route has a feed of its own — follow it and the next KUL → OPO drop reaches you as soon as we find it.
Follow this route’s feedKeep browsing
Related routes on the board.
GoodNonstop · 4.5h
KUL to CANChina
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$178
usually $230
−23%
Most monthly lows $179–$230. Cheaper than every other month on record (5).
Good1 stop · 7.5h
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usually $330
−22%
Most monthly lows $277–$330. Cheaper than every other month on record (5).
ExceptionalNonstop · 3h
FRA to OPOGermany
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$74
usually $255
−71%
Most monthly lows $99–$259. Cheaper than every other month on record (5).
ExceptionalNonstop · 2.5h
LON to OPOUnited Kingdom
London
$60
usually $160
−63%
Most monthly lows $118–$181. Cheaper than every other month on record (8).
ExceptionalNonstop · 3h
ROM to OPOItaly
Rome
$59
usually $140
−58%
Most monthly lows $89–$152. Cheaper than every other month on record (7).
