All deals

Cheap Flights from San Francisco to Porto

Every verified deal from San Francisco to Porto, ranked by how far the fare falls below its route baseline. Prices are checked against live availability.

San Francisco → Porto

$548 $0.05/mi

Tap Air Portugal · Economy · Oct 24 – Oct 30 (6n)

On the board right now

Cabin mix: 1 Economy.
Best discount right now: 40% below the route baseline.
Most active airlines: Tap Air Portugal.
1 deal first seen in the last 24 hours.

Price history: San Francisco to Porto

Lowest observed fare on this corridor over the past year, from our signals database.

$727 — seen Jul 2026 (3 observations)
$728 — seen Aug 2026 (3 observations)
$728 — seen Aug 2026 (3 observations)
$728 — seen Aug 2026 (6 observations)
$728 — seen Aug 2026 (6 observations)
$728 — seen Aug 2026 (6 observations)
$728 — seen Aug 2026 (9 observations)
$728 — seen Aug 2026 (6 observations)
$728 — seen Aug 2026 (3 observations)
$728 — seen Aug 2026 (6 observations)
$728 — seen Aug 2026 (6 observations)
$728 — seen Aug 2026 (6 observations)
$728 — seen Aug 2026 (3 observations)
$625 — seen Aug 2026 (6 observations)
$622 — seen Aug 2026 (3 observations)
$622 — seen Aug 2026 (2 observations)
$622 — seen Aug 2026 (9 observations)
$623 — seen Aug 2026 (3 observations)
$674 — seen Aug 2026 (6 observations)
$622 — seen Aug 2026 (3 observations)
$623 — seen Aug 2026
$623 — seen Aug 2026 (3 observations)
$623 — seen Aug 2026 (3 observations)
$623 — seen Aug 2026 (9 observations)
$623 — seen Aug 2026
$623 — seen Aug 2026 (11 observations)
$623 — seen Aug 2026 (9 observations)
$623 — seen Aug 2026 (6 observations)
$623 — seen Aug 2026 (2 observations)
$623 — seen Aug 2026 (6 observations)
$622 — seen Aug 2026 (3 observations)
$820 — seen Sep 2026 (3 observations)
$727 — seen Sep 2026 (3 observations)
$677 — seen Sep 2026 (3 observations)
$677 — seen Sep 2026 (3 observations)
$677 — seen Sep 2026 (3 observations)
$677 — seen Sep 2026 (6 observations)
$610 — seen Sep 2026 (3 observations)
$610 — seen Sep 2026 (3 observations)
$598 — seen Sep 2026 (3 observations)
$598 — seen Sep 2026 (6 observations)
$598 — seen Sep 2026 (6 observations)
$609 — seen Sep 2026
$685 — seen Sep 2026
$598 — seen Sep 2026 (3 observations)
$595 — seen Sep 2026 (6 observations)
$595 — seen Sep 2026 (3 observations)
$610 — seen Sep 2026 (6 observations)
$610 — seen Sep 2026 (3 observations)
$575 — seen Sep 2026 (3 observations)
$480 — seen Sep 2026 (3 observations)
$575 — seen Sep 2026 (3 observations)
$480 — seen Sep 2026 (6 observations)
$851 — seen Sep 2026 (6 observations)
$608 — seen Sep 2026 (3 observations)
$595 — seen Sep 2026 (3 observations)
$595 — seen Sep 2026 (3 observations)
$548 — seen Sep 2026 (3 observations)
$549 — seen Sep 2026

Frequently asked questions

How many flight deals from San Francisco to Porto are on Sparkflights right now?

There are 1 verified deals from San Francisco to Porto on the board right now. The list refreshes hourly.

What is the cheapest flight from San Francisco to Porto right now?

The lowest verified fare from San Francisco to Porto right now is $548. Prices are checked against live availability before listing.

What is the lowest price ever seen from San Francisco to Porto?

The lowest fare we've recorded from San Francisco to Porto is $480, based on 59 price observations over the past year.

Which airlines fly San Francisco to Porto?

Airlines with the most deals from San Francisco to Porto right now are Tap Air Portugal.