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 | $641 (United Airlines) |
One-way from | $258 (IEagle) |
Popular in | December |
Cheapest in | October |
Average price | $1,141 |
Good round-trip deal | $698 or less |
Good one-way deal | $309 or less |
Fly from
Fly to
Route
Depart
Return
Price
San FranciscoSingapore
SFO - SIN
SFOSIN
San Francisco
Thu 2/12
10:35 am-8:15 pm
Nonstop17h 40m
Singapore Changi
Wed 2/18
10:10 am-9:05 am
Nonstop14h 55m
San FranciscoSingapore
SFO - SIN
SFOSIN
San Francisco
Thu 2/5
10:40 am-12:55 am
1 stop22h 15m
Singapore Changi
Sat 2/14
10:10 am-9:05 am
Nonstop14h 55m
San FranciscoSingapore
SFO - SIN
SFOSIN
San Francisco
Mon 2/2
7:25 am-6:55 am
2 stops31h 30m
Singapore Changi
Fri 2/13
10:20 pm-9:15 pm
Nonstop14h 55m
San FranciscoSingapore
SFO - SIN
SFOSIN
San Francisco
Sun 2/1
9:10 am-6:55 am
2 stops29h 45m
Singapore Changi
Tue 2/10
10:20 pm-9:15 pm
Nonstop14h 55m
San FranciscoSingapore
SFO - SIN
SFOSIN
San Francisco
Sat 1/24
12:20 am-6:55 am
1 stop38h 35m
Singapore Changi
Mon 2/2
10:45 am-3:20 pm
1 stop20h 35m
San FranciscoSingapore
SFO - SIN
SFOSIN
San Francisco
Wed 1/28
11:40 am-8:25 pm
1 stop40h 45m
Singapore Changi
Tue 2/3
1:35 am-9:30 am
1 stop23h 55m
San FranciscoSingapore
SFO - SIN
SFOSIN
San Francisco
Wed 1/28
6:05 am-12:10 am
2 stops26h 05m
Singapore Changi
Tue 2/3
1:35 am-10:57 pm
2 stops37h 22m
Los AngelesSingapore
LAX - SIN
LAXSIN
Los Angeles
Thu 11/27
12:00 pm-8:00 am
1 stop28h 00m
Singapore Changi
Wed 12/10
10:20 pm-7:36 am
1 stop25h 16m
Los AngelesSingapore
LAX - SIN
LAXSIN
Los Angeles
Wed 1/28
7:20 am-12:10 am
2 stops24h 50m
Singapore Changi
Tue 3/17
1:35 am-9:30 am
1 stop22h 55m
SeattleSingapore
SEA - SIN
SEASIN
Seattle/Tacoma Intl
Sat 3/7
12:10 am-9:55 pm
1 stop29h 45m
Singapore Changi
Sun 3/15
11:10 pm-2:55 pm
1 stop30h 45m
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 8% 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.
Comfort
Food
Entertainment
Boarding
Overall
Crew
Reviews
Juliet,Oct 2025
PUS - SIN
Comfort
Food
Entertainment
Boarding
Overall
Crew
Reviews
Juliet,Oct 2025
PUS - SIN
Comfort
Food
Entertainment
Boarding
Overall
Crew
Reviews
Juliet,Oct 2025
PUS - SIN
Comfort
Food
Entertainment
Boarding
Overall
Crew
Reviews
Juliet,Oct 2025
PUS - SIN
Comfort
Food
Entertainment
Boarding
Overall
Crew
Reviews
Juliet,Oct 2025
PUS - SIN
Comfort
Food
Entertainment
Boarding
Overall
Crew
Reviews
Juliet,Oct 2025
PUS - SIN
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$383 | Average$1,399 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$490 | Average$1,041 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$500 | Average$2,030 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$550 | Average$626 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$582 | Average$769 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$588 | Average$1,222 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$598 | Average$1,007 | FlexibilityNo cancel fee | On-time49% | |
| Cheapest$602 | Average$684 | FlexibilityNo cancel fee | On-time60% | |
| Cheapest$647 | Average$915 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$656 | Average$691 | FlexibilityNo cancel fee | On-time67% |