How long is the flight from San Francisco to Singapore?

Non-stop flights on SFO → SIN are typically around 16.5 hours. Connecting itineraries add 3–8 hours depending on the hub and layover.

Which airlines fly from San Francisco to Singapore?

The main carriers on this route are Singapore Airlines, United. Codeshare and one-stop options add several more — the filter panel above shows every airline in the current fare set.

When is the cheapest time to fly from San Francisco to Singapore?

Historically the lowest fares land in February, March, September. Summer (mid-June through mid-August) and the Christmas / New Year window are always peak. Mid-week departures (Tuesday–Thursday) typically beat weekend prices by 10–20%.

How far ahead should I book San Francisco to Singapore?

Six to ten weeks ahead is the sweet spot for this route. Inside three weeks, fares tend to spike as airlines sell to last-minute business travellers. Award availability often opens 10–11 months out if you're booking on miles.

Can I book directly on destination.com?

The Book button on each fare opens the airline or OTA (Trip.com, Kiwi, Expedia, Booking, Priceline, etc.) that's actually selling that ticket. You complete payment there at the same price you saw here — we never add a markup.

SFO → SIN

San Francisco to Singapore flights.

Live cached fares on San Francisco (SFO) → Singapore (SIN), refreshed every 30 minutes. Non-stop and connecting itineraries side by side — compare airlines, times and stops, then book in one click.

Flying time
~16.5h non-stop
Airlines
Singapore Airlines, United
Cheapest months
February, March, September

Flex dates · cheapest nearby

Loading prices…

Read our best-time-to-book guide for SFO → SIN →Target price, booking window, weekday pattern.

See 30-day price history for SFO → SIN →Median fare, lows, and best-day patterns.

No cached fares for exactly 2026-10-22 → 2026-10-29. Showing recent fares on SFO → SIN — pick a different date in the calendar above or run a live search.

San Francisco → Singapore · 9 fares12-month low · $391

Cached from Travelpayouts · filter & sort below

Points

Showing 9 of 9 results

Alt date · 3 weeks earlier
Asiana Airlines · OZ 211
🌙 Red-eyeLong · 31h 10m
OutboundSFO → SINFri, Oct 2 · 6:20 AM· 19h 25m· 1 stop
$391
one-way
Live search your date →
Alt date · 6 weeks earlier
United Airlines · UA 29
Long · 32h 25m⚠ Basic economy may apply
OutboundSFO → SINWed, Sep 9 · 5:40 PM· 16h 55m· Non-stop
ReturnSIN ← SFOWed, Sep 23 · 12:45 AM· 15h 30m· Non-stop
$693
total round-trip
Live search your date →
Alt date · 4 months later
Vietnam Airlines · VN 099
🌙 Red-eyeLong · 42h 50m
OutboundSFO → SINFri, Mar 5 · 5:10 AM· 18h 40m· 1 stop
ReturnSIN ← SFOSat, Mar 13 · 5:15 AM· 15h 45m· 1 stop
$827
total round-trip
Live search your date →
Alt date · 4 weeks later
China Eastern · MU 590
Long · 56h 25m
OutboundSFO → SINThu, Nov 19 · 8:00 PM· 19h 25m· 1 stop
ReturnSIN ← SFOWed, Nov 25 · 10:00 AM· 16h 15m· 1 stop
$798
total round-trip
Live search your date →
Alt date · 3 weeks later
Philippine Airlines · PR 105
🌙 Red-eyeLong · 54h 30m
OutboundSFO → SINWed, Nov 11 · 6:40 AM· 18h 50m· 1 stop
ReturnSIN ← SFOSun, Nov 29 · 6:20 AM· 16h 20m· 1 stop
$958
total round-trip
Live search your date →
Alt date · 3 weeks later
United Airlines · UA 4021
Long · 59h 50m⚠ Basic economy may apply
OutboundSFO → SINThu, Nov 12 · 4:37 PM· 21h 21m· 2 stops
ReturnSIN ← SFOSat, Nov 28 · 1:30 AM· 19h 17m· 2 stops
$990
total round-trip
Live search your date →
Alt date · 3 weeks later
United Airlines · UA 4372
🌙 Red-eyeLong · 68h 57m⚠ Basic economy may apply
OutboundSFO → SINSun, Nov 15 · 7:30 AM· 25h 49m· 2 stops
ReturnSIN ← SFOSun, Nov 29 · 1:30 AM· 19h 17m· 2 stops
$1,034
total round-trip
Live search your date →
Alt date · 3 weeks later
Korean Air · KE 3460
Long · 88h 13m
OutboundSJC → SINSun, Nov 15 · 12:33 AM· 21h 45m· 2 stops
ReturnSIN ← SJCWed, Dec 2 · 2:30 AM· 18h 59m· 2 stops
$851
total round-trip
Live search your date →
Alt date · 8 weeks later
United Airlines · UA 1457
Long · 55h 15m⚠ Basic economy may apply
OutboundSFO → SINFri, Dec 18 · 4:45 PM· 21h 9m· 2 stops
ReturnSIN ← SFOMon, Dec 28 · 10:35 PM· 18h 33m· 2 stops
$2,309
total round-trip
Live search your date →

Try a nearby airport

Thin routes often have more options from a neighbouring airport.

Oakland (OAK) → Singapore (SIN)

nearby origin

San Jose (SJC) → Singapore (SIN)

nearby origin

About San Francisco → Singapore

SQ A350 non-stop is ~17h and one of the world's longest flights. Economy sells out — book 3+ months out.

Typical non-stop flying time is around 16.5 hours. Major carriers on this route include Singapore Airlines, United. Fares are usually cheapest in February, March, September — book 6–10 weeks ahead and avoid school-holiday peaks (late June–August, Christmas–New Year) for the best pricing.

Month-by-month price guide: San Francisco to Singapore

Live cheapest round-trip fare cached on SFO → SIN for each of the next 12 months. Tap any month and run a live search to confirm.

Sep
Low
from $741
Oct
No data
Nov
Low
from $798
Dec
Peak
from $2309
Jan
No data
Feb
No data
Mar
Low
from $827
Apr
No data
May
No data
Jun
No data
Jul
No data
Aug
No data

Cheapest next 12 months: September from $741 round-trip. Run a live search →

Booking window tip

Long-haul fares are most predictable when booked 10-16 weeks ahead. Inside six weeks expect sharp increases, especially in premium cabins. If you're paying with miles, search 330+ days ahead when award inventory first loads.

Price drop alerts

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Where to stay

Once you’ve booked the flight, pick a Singapore neighbourhood.

See where to stay in Singapore →

Questions, answered

How long is the flight from San Francisco to Singapore?
Non-stop flights on SFO → SIN are typically around 16.5 hours. Connecting itineraries add 3–8 hours depending on the hub and layover.
Which airlines fly from San Francisco to Singapore?
The main carriers on this route are Singapore Airlines, United. Codeshare and one-stop options add several more — the filter panel above shows every airline in the current fare set.
When is the cheapest time to fly from San Francisco to Singapore?
Historically the lowest fares land in February, March, September. Summer (mid-June through mid-August) and the Christmas / New Year window are always peak. Mid-week departures (Tuesday–Thursday) typically beat weekend prices by 10–20%.
How far ahead should I book San Francisco to Singapore?
Six to ten weeks ahead is the sweet spot for this route. Inside three weeks, fares tend to spike as airlines sell to last-minute business travellers. Award availability often opens 10–11 months out if you're booking on miles.
Can I book directly on destination.com?
The Book button on each fare opens the airline or OTA (Trip.com, Kiwi, Expedia, Booking, Priceline, etc.) that's actually selling that ticket. You complete payment there at the same price you saw here — we never add a markup.

Other popular routes

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