UA's Polaris Business Class includes lie-flat seats and Saks Fifth Avenue bedding.
UA's Premium Plus offers extra legroom, upgraded meals, and priority check-in on international routes.

Most accurate provider | Justfly.com 3 stars |
|---|---|
Most trusted provider | Justfly.com 3 stars |
Round-trip from | $645 (FlightHub) |
One-way from | $322 (IEagle) |
Popular in | December |
Cheapest in | October |
Average price | $1,294 |
Good round-trip deal | $708 or less |
Good one-way deal | $306 or less |
Fly from
Fly to
Route
Depart
Return
Price
San FranciscoSingapore
SFO - SIN
SFOSIN
San Francisco
Sat 1/24
10:35 pm-8:00 am
Nonstop17h 25m
Singapore Changi
Fri 1/30
6:35 am-1:34 pm
2 stops22h 59m
San FranciscoSingapore
SFO - SIN
SFOSIN
San Francisco
Sat 2/14
11:40 am-5:00 am
1 stop25h 20m
Singapore Changi
Mon 2/23
10:40 am-9:30 am
1 stop38h 50m
San FranciscoSingapore
SFO - SIN
SFOSIN
San Francisco
Sat 2/14
11:40 am-5:00 am
1 stop25h 20m
Singapore Changi
Tue 2/24
10:30 pm-9:30 am
1 stop27h 00m
San JoseSingapore
SJC - SIN
SJCSIN
San Jose
Sun 3/8
7:15 am-5:00 am
2 stops30h 45m
Singapore Changi
Thu 3/12
10:40 am-10:11 pm
2 stops26h 31m
San JoseSingapore
SJC - SIN
SJCSIN
San Jose
Mon 1/19
7:15 am-12:10 am
2 stops24h 55m
Singapore Changi
Sun 1/25
10:30 pm-1:39 pm
2 stops31h 09m
San JoseSingapore
SJC - SIN
SJCSIN
San Jose
Tue 2/10
7:15 am-5:00 am
2 stops29h 45m
Singapore Changi
Wed 2/25
10:40 am-7:12 pm
2 stops24h 32m
San FranciscoSingapore
SFO - SIN
SFOSIN
San Francisco
Mon 2/16
11:40 am-8:25 pm
1 stop40h 45m
Singapore Changi
Mon 2/23
1:35 am-7:57 am
2 stops46h 22m
San JoseSingapore
SJC - SIN
SJCSIN
San Jose
Thu 1/29
7:15 am-12:10 am
2 stops24h 55m
Singapore Changi
Mon 2/2
10:30 pm-2:52 pm
2 stops32h 22m
Los AngelesSingapore
LAX - SIN
LAXSIN
Los Angeles
Mon 12/1
8:04 am-8:15 pm
1 stop20h 11m
Singapore Changi
Mon 12/8
10:10 am-5:45 pm
1 stop23h 35m
Los AngelesSingapore
LAX - SIN
LAXSIN
Los Angeles
Sat 1/24
10:50 am-12:10 am
1 stop21h 20m
Singapore Changi
Tue 2/10
10:40 am-1:40 pm
1 stop19h 00m
Currently, January is the cheapest month in which you can book a flight from USA to Singapore (average of $547). Flying from USA to Singapore in June is currently the most expensive (average of $771). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
Unlike in the morning, when flights are generally more expensive, you can save up to 7% on flights from USA to Singapore by exploring options for tickets in the evening.
Travelers seeking maximum savings on their USA to Singapore flight should consider departing on Wednesday afternoons when fares are most often at their lowest. Friday at noon flights should be avoided if possible as fares are typically the most expensive at this time.
The most flights from US0 to SIN are scheduled on a Wednesday (3 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (2 on average).
Comfort
Entertainment
Boarding
Overall
Food
Crew
Reviews
Juliet,Oct 2025
PUS - SIN
Comfort
Entertainment
Boarding
Overall
Food
Crew
Reviews
Juliet,Oct 2025
PUS - SIN
Comfort
Entertainment
Boarding
Overall
Food
Crew
Reviews
Juliet,Oct 2025
PUS - SIN
Comfort
Entertainment
Boarding
Overall
Food
Crew
Reviews
Juliet,Oct 2025
PUS - SIN
Comfort
Entertainment
Boarding
Overall
Food
Crew
Reviews
Juliet,Oct 2025
PUS - SIN
Comfort
Entertainment
Boarding
Overall
Food
Crew
Reviews
Juliet,Oct 2025
PUS - SIN
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$383 | Average$1,387 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$490 | Average$1,041 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$500 | Average$2,069 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$550 | Average$626 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$582 | Average$779 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$588 | Average$1,222 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$598 | Average$1,023 | FlexibilityNo cancel fee | On-time49% | |
| Cheapest$602 | Average$684 | FlexibilityNo cancel fee | On-time60% | |
| Cheapest$647 | Average$914 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$656 | Average$691 | FlexibilityNo cancel fee | On-time67% |