This fare is widely available for travel on Mondays, Tuesdays, Wednesdays, and Thursdays, from September through mid-December.
As an example, I found this price available departing San Francisco SFO on Monday, November 11, returning from Singapore SIN on Thursday, November 21, 2019.
Please take note that there is a long layover on the outbound flight stopping in Hong Kong (HKG), the return leg from Singapore to San Francisco is nonstop.
This price includes a carry-on bag, a personal item, and two free checked bags.
Standard advanced seat selection is included.
To fly nonstop on both portions of the itinerary, the price will jump up to $655 roundtrip on United, which is still below the going rate offered by Singapore Airlines.
Related: How to Fly United Airlines
See our fare details for booking info.
Need a place to sling your suitcases and sleep in Singapore? Here's what's available for the mentioned dates on Hotelwatchdog.