Route brief · SFO → LIS
San Francisco → Lisbon
$677
round-trip · too little price history on this route to compare
Sep 28 – Oct 7 · 9 nights
TAP Air PortugalNonstop
Cached fare — the booking search re-prices live before you pay.
Destination briefLISLisbonTiled hills, custard tarts, Atlantic light — TAP’s hub wars keep this Europe’s cheapest gateway.Best windowMar–Jun · Sep–OctAirportsHumberto Delgado (LIS)All routes into LisbonWhen this route gets cheap.
Best time to be in Lisbon: Mar–Jun · Sep–Oct. Fare history for this route is still thin, so we make no seasonal call yet.
The cheapest itinerary we are tracking flies TAP Air Portugal nonstop and takes about 11.5 hours outbound, on a 9-night trip. At $677 for 9,116 km each way, that works out to about $37 per 1,000 km flown. That is below the $44 typical of long-haul fares here. Across the 12 departure cities we track at a similar distance from Lisbon, this fare ranks 3rd — 11% above the $612 from São Paulo. That puts it in the cheaper half of the 39 routes of similar length we watch out of San Francisco, where the middle fare is $794. 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.
The 5 days we hold a cached fare for
Tap a date → live search
The median cached fare across this calendar is 9% lower than when tracking began on Aug 8 — $959 then versus $876 now, across 7 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 $676, on Oct 14.
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.
Route facts
- Airports
- SFO · Oakland (OAK) · San José (SJC) ↔ Humberto Delgado (LIS)
- Flight time
- ~11.5 hours outbound
- Distance
- ~9,116 km each way
- Airlines on the board
- TAP Air Portugal
- Itineraries
- Nonstop available
- Best months to visit
- Mar–Jun · Sep–Oct
SF → LIS, answered.
How far in advance should I book SF → Lisbon?
We do not publish a number for this, because we cannot measure it yet.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 San Francisco to Lisbon?
Yes — the current board includes nonstop fares (TAP Air Portugal). The outbound leg runs around 11.5 hours.
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 Lisbon?
Lock the flight first — then compare stays for Sep 28 – Oct 7 · 9 nights.
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Missed it?
Cached fares expire. This route has a feed of its own — follow it and the next SF → LIS drop reaches you as soon as we find it.
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