Cheap Flights from San Francisco to Porto
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The latest fare from San Francisco to Porto: $721 round trip, Feb 21 – Mar 2, seen Nov 9. Prices by month are below.
Across 5 months of observations from San Francisco to Porto, the lowest round-trip economy fare we recorded was $480, in September. The typical economy fare was $683. September was the cheapest month we saw and July the dearest.
The most recent economy price we saw on this route was $721 on Lufthansa and United, seen Nov 9.
See every deal from San Francisco, to Porto, or the return direction Porto to San Francisco.
Latest economy price we saw: San Francisco to Porto
The most recent economy round-trip fare we saw on this route.
| From | Price | Per mile | Travel dates | Airline | Seen |
|---|---|---|---|---|---|
| San Francisco (SFO) to Porto (OPO) | $721 | 6.5¢ | Feb 21 – Mar 2 | Lufthansa and United | Nov 9 |
Economy price history: San Francisco to Porto
The lowest fares we saw each month.
| Month | Low | Typical | Sightings |
|---|---|---|---|
| Nov 2026 | $720 | $720 | 36 |
| Oct 2026 | $593 | $669 | 102 |
| Sep 2026 | $480 | $633 | 117 |
| Aug 2026 | $622 | $667 | 149 |
| Jul 2026 | $727 | $727 | 3 |
Frequently asked questions
How many flight deals from San Francisco to Porto are on Sparkflights right now?
There are 0 deals from San Francisco to Porto on the board right now.
What is the lowest price ever seen from San Francisco to Porto?
The lowest economy fare we've recorded from San Francisco to Porto is $480, based on 407 price observations over 5 months.
How much does a flight from San Francisco to Porto cost?
The typical round-trip economy fare we observed from San Francisco to Porto is $683, against a recorded low of $480. These are observations, not quotes.
When is the cheapest month to fly San Francisco to Porto?
For economy fares from San Francisco to Porto, September was the cheapest month we observed and July the dearest, over 5 months of data.
What is the current price from San Francisco to Porto?
The most recent economy fare we saw from San Francisco to Porto is $721, on Nov 9.