Route brief · SEL → OPO
Seoul → Porto
$1,032
round-trip · too little price history on this route to compare
Apr 21 '27 – May 6 '27 · 15 nights
Vietnam Airlines3 stops
Cached fare — the booking search re-prices live before you pay.
Destination briefOPOPortoGranite, port wine and a river gorge through the middle — cheaper and steeper than Lisbon.Best windowMay–Jun · Sep–OctAirportsFrancisco Sá Carneiro (OPO)All routes into PortoWhen this route gets cheap.
Best time to be in Porto: May–Jun · Sep–Oct. Fare history for this route is still thin, so we make no seasonal call yet.
The cheapest itinerary we are tracking makes 3 stops and takes about 23 hours outbound, on a 15-night trip — ticketed under Vietnam Airlines, which on a connecting fare need not operate every leg. At $1,032 for 10,168 km each way, that works out to about $51 per 1,000 km flown. That is above the $44 typical of long-haul fares here. Across the 13 departure cities we track at a similar distance from Porto, this fare ranks 9th — 50% above the $688 from Delhi. For context, the middle fare among the 46 routes of similar length we watch out of Seoul is $762. 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.
Route facts
- Airports
- Incheon (ICN) · Gimpo (GMP) ↔ Francisco Sá Carneiro (OPO)
- Flight time
- ~23 hours outbound
- Distance
- ~10,168 km each way
- Airlines on the board
- Vietnam Airlines
- Itineraries
- Connections on current fares
- Best months to visit
- May–Jun · Sep–Oct
SEL → OPO, answered.
How far in advance should I book SEL → 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We do not publish a number for this, because we cannot measure it yet.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. See /guides/what-moves-a-flight-price/ for the levers we can measure.
Are there nonstop flights from Seoul to Porto?
The current cheapest fares involve a connection, ticketed under Vietnam Airlines. Nonstop options exist on many dates at higher prices — check the live search for your exact dates.
Are these prices guaranteed?
No — these are cached fares found on real searches (this one on September 1). 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 Apr 21 '27 – May 6 '27 · 15 nights.
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Missed it?
Cached fares expire. This route has a feed of its own — follow it and the next SEL → OPO drop reaches you as soon as we find it.
Follow SEL → OPO