Flight price alerts: San Francisco → Singapore
Sample round trips on this route start around EUR 662; September 2026 is often the cheapest month in our next-3-month window. FlexTrip Alerts is a free email service — set flexible travel dates and a max price, and we notify you when a round trip fits. We check fares about four times per day; we do not sell tickets.
Set a free tracker with flexible dates and your max price. We email you only when a round trip fits.
Sample fares from EUR 662. Cheapest month in our next-3-month sample: September 2026.
Set an alert and we email you when a round trip drops under your limit.
Set a price alertRound trips on this route
Cheapest-seen sample fares (next 3 months) — confirm the final price on the booking site when you click through.
Last updated .
- See deal
- Round trip · 30 nights
- Sun 20 Sept · 10:40
- Return Tue 20 Oct · 08:45
EUR 662
- See deal
- Round trip · 22 nights
- Sun 20 Sept · 23:20
- Return Mon 12 Oct · 22:50
EUR 805
- See deal
- Round trip · 5 nights
- Sun 09 Aug · 23:20
- Return Fri 14 Aug · 04:40
EUR 1120
| Depart | Return | Stay | Price | Book |
|---|---|---|---|---|
| Sun 20 Sept · 10:40 | Tue 20 Oct · 08:45 | 30 nights | EUR 662 | See deal |
| Sun 20 Sept · 23:20 | Mon 12 Oct · 22:50 | 22 nights | EUR 805 | See deal |
| Sun 09 Aug · 23:20 | Fri 14 Aug · 04:40 | 5 nights | EUR 1120 | See deal |
Frequently asked questions
- How do I get email alerts when San Francisco to Singapore flights drop in price?
- Create a free FlexTrip Alerts tracker for San Francisco International Airport (SFO) to Singapore Changi Airport (SIN). Choose your flexible departure window, stay length, and maximum price — we email you when a round trip fits.
- Does FlexTrip Alerts book flights from San Francisco to Singapore?
- No — we do not sell tickets. FlexTrip Alerts watches prices and emails you when a fare matches your plan. You book on the airline or travel site you prefer when you receive an alert.
- Can I set flexible travel dates for San Francisco to Singapore alerts?
- Yes. Pick a departure window (not one fixed day) and how many nights you can stay. We match round trips that fit your window, stay length, and max price — then email you when one qualifies.
- How often does FlexTrip Alerts check San Francisco to Singapore fares?
- We scan aggregated fares on a schedule — about four times per day (every ~6 hours, UTC). You can also trigger an on-demand check from your dashboard, with a short cooldown between manual refreshes.
- What is the cheapest month to fly from San Francisco to Singapore?
- Based on recent fare samples on this page, September 2026 is currently the cheapest month to fly from San Francisco to Singapore, with round trips from about EUR 662. Prices change — set an alert to catch the next drop.
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