Long haul · Stopover · Modern. Compare cheap flights to Singapore from US airports — flight time 17h 30m from San Francisco International.
Compare flights to Singapore →Singapore is a long-haul destination from the US — around 17h 30m in the air from San Francisco International (SFO), which makes it a realistic one- or two-week trip. Round-trip fares from around $899 are typical when booked ahead from San Francisco International.
Most travelers aim for All year. Typical advance round-trips sit around $899. On the ground, Singapore dollar (SGD) is the local currency and English, Mandarin, Malay, Tamil the dominant language — English coverage is solid in tourist quarters and at the airport. Visa: Visa-free for US passport holders up to 90 days. SG Arrival Card required online within 3 days of arrival. 8-14 weeks ahead is the long-haul sweet spot — earlier doesn't reliably help, later starts to hurt; last-minute bookings can run two to three times the advance fare.
By Louisa Lowe, Lead Writer · Updated for 2026.
Direct answer. Round-trip fares to Singapore typically start around $899 when booked ahead — it's a long-haul route, roughly 17h 30m in the air from San Francisco International.
8-14 weeks ahead is the long-haul sweet spot — earlier doesn't reliably help, later starts to hurt. Last-minute bookings are where this route punishes you — waiting until inside two weeks of departure usually costs well over the advance fare.
Key fact: A typical advance round-trip to Singapore is around $899; flight time from San Francisco International is about 17h 30m.
Direct answer. Book 8-14 weeks ahead, and aim for All year if you want Singapore at its best — that window balances weather and crowds rather than chasing a mythical cheapest day.
Before you commit, the admin: Visa-free for US passport holders up to 90 days. SG Arrival Card required online within 3 days of arrival. Currency is Singapore dollar (SGD); English, Mandarin, Malay, Tamil is the main language, with English widely understood in tourist areas.
Key fact: Best months to visit Singapore: All year. Flight time from San Francisco International: about 17h 30m.
Always confirm visa and entry requirements at travel.state.gov before booking.
From San Francisco International (SFO), nonstop flights to Singapore take approximately 17h 30m. Total journey time depends on your departure airport, any connections, and seasonal headwinds.
Visa-free for US passport holders up to 90 days. SG Arrival Card required online within 3 days of arrival. Always check travel.state.gov for the latest entry requirements before booking.
The best months to visit Singapore are All year, when conditions are most comfortable for sightseeing and weather is settled.
Singapore dollar (SGD) — most major hotels and restaurants in Singapore accept card payments, but cash is useful for smaller establishments and tipping.
English, Mandarin, Malay, Tamil. English is widely understood in tourist areas, hotels, and major restaurants.
