Round-trip, nonstop flights from San Francisco, California (SFO) to Singapore (SIN) for $643 on Singapore Airlines (5 stars). This is an Economy Lite fare, which includes 1 carry-on bag and 2 checked bags. Ticket changes or cancellations aren’t permitted.
You can upgrade to an Economy Value fare for $678 round trip, which also includes standard seat selection, cancellations for $300, and ticket changes $150. Just select the fare type you prefer when booking your flights.
This fare is available in 2026. You can also find Singapore Airlines flights in late September through November 2025 for $756. Follow the instructions below to find them.
How to Book this Fare
- Please support us by using our link to book directly with Singapore Airlines. There is no cost to you and we may earn a small commission if you do.
- Availability: January – February 2026
- Search tips
- Use a trip length of at least 3 days
- Best days to depart: Sunday through Friday
- Best days to return: Tuesday through Friday
Booking Instructions
There are 2 ways to quickly search for flights on the Singapore Airlines website:
- A fare calendar opens when you click into the date field in the flight search form. You can use this to quickly scan for low the lowest fares by month.
- Adjust the trip length at the bottom of the calendar to find low-price date combinations.
- Perform a flight search. Above the flight search results, there is a small link: “See 7-day fares”. Click it to open a 7-day calendar with the lowest fares highlighted.
- On this calendar, use the “Next 7 days” or “Previous 7 days” links to navigate to different departure and return date ranges.
- Click the desired price and dates, then scroll down and click “Next”.
- Select the flights and fare type you want and follow the instructions to complete the booking.
Example Dates
| Depart | Return | Price |
|---|---|---|
| Jan. 13, 14, 16, 17, 18 – 24 | Jan. 27 – 30; Feb. 3 – 6, 10, 12, 13, 17, 18 | $643 |
| Jan. 25 – 31 | Feb. 3 – 6; 10, 11, 13, 17, 18 | $643 |
| Feb. 1 – 7 | Feb. 10, 11, 13, 17, 18 | $643 |
| Feb. 8 – 14 | Feb. 17, 18 | $643 |
Flight deals are accurate and available at time of publication. Sale fares disappear quickly – if it’s been more than 24-72 hours since this deal was posted or updated, chances are it’s no longer available.
Flight deal information
| Airline(s): | Singapore Airlines |
| Rating: | 5 stars |
| Origin: | SFO |
| Destination: | SIN |
| Stops: | nonstop |
| Fare type: | Economy Lite |
| Carry-on bags: | 1 |
| Checked bags: | 2 |
| Seat selection: | For a fee |
| Changes: | Not allowed |
| Refunds / Cancellation: | Not allowed |
| Fare (ticket price): | $643 |
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