Singapore Airlines Flight 31 Deals & Information (2026/2027)

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Singapore Airlines Flight 31 Route Deals From $646

The cheapest prices found with in the last 7 days for return flights were $645 and $646 for one-way flights to Changi for the period specified. Prices and availability are subject to change. Additional terms apply.

Mon, Apr 6 - Mon, May 4
SFO
San Francisco Intl.
SIN
Changi
$645 Roundtrip, found 1 day ago
$645
Roundtrip
found 1 day ago
Select Singapore Airlines flight, departing Mon, Apr 6 from San Francisco Intl. to Changi, returning Mon, May 4, priced at $645 found 1 day ago
Fri, Apr 17 - Sat, May 2
SFO
San Francisco Intl.
SIN
Changi
$682 Roundtrip, found 6 days ago
$682
Roundtrip
found 6 days ago
Select Singapore Airlines flight, departing Fri, Apr 17 from San Francisco Intl. to Changi, returning Sat, May 2, priced at $682 found 6 days ago