ExceptionalNonstop · 1.5h
SFO to LASUnited States
Las Vegas
$61
usually $155
−61%
Most monthly lows $130–$295. Cheaper than every other month on record (5).
Flights · SFO → OPO
San Francisco to Porto
Fare on the board
None right now.
The last cached fare expired on 14 October 2026. We show no price until a new one turns up.
No current fare1 month of price history
- Last fare expired
- 14 Oct 2026
- Price history
- 1 month
- Flight time
- About 14h
We still track this route; our crawl simply has not found a fare on it since. That says nothing about whether it is expensive today, and we will not invent a price to fill the gap. This page fills back in the moment a fare returns.
Your own dates can still be searched, just below.
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 PortoWhat we did measure
The price history we hold.
We hold one month ahead with a cached fare: October, from $776. That is a single data point, not a season, so there is no chart to draw yet.
On the board
Routes with observed fares.
RareNonstop · 13h
SFO to SELSouth Korea
Seoul
$648
usually $1,355
−52%
Most monthly lows $802–$1,357. Cheaper than every other month on record (3).
Rare2 stops · 18.5h
SFO to SHAChina
Shanghai
$481
usually $890
−46%
Most monthly lows $840–$890. Cheaper than every other month on record (3).
ExceptionalNonstop · 3h
FRA to OPOGermany
Frankfurt
$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).
