How long is the BI421 flight from Brunei to Singapore?

The timetable allows 2 h 5 min. Brunei to Singapore is 1,278 km (794 mi).

Which terminal does BI421 use?

It usually arrives at Terminal 2 at Singapore Changi Airport (SIN). Check the flight card above for today's terminal and gate.

What other flight numbers does BI421 have?

Also listed as RBA421 (Royal Brunei Airlines' ICAO code) and BI 421.

BI421 Flight Status Royal Brunei Airlines: Brunei to Singapore (RBA421)

Royal Brunei Airlines BI 421

Landed On Time

BWN Brunei

Scheduled: 09:15
Actual: 09:20

Departure: Sat, Nov 14, 2026 · local time UTC+8

Brunei International Airport (BWN)

All BWN Departures >

SIN Singapore

Scheduled: 11:20
Actual: 11:12
Delay

Terminal: 2 | Gate: F37

Arrival: Sat, Nov 14, 2026 · local time UTC+8

Singapore Changi Airport (SIN)

All SIN Arrivals >

Landed 7h 23m ago 100%

BWN 09:20 SIN 11:12

1,278 km (794 mi) flown

Estimated position based on departure and arrival times, not live tracking. Times are local at each airport.

Add to calendar

Distance: 1278 km / 794 miles · Scheduled Duration: 02:05 · Actual Duration: 01:52

BI 421 Flight Status & Schedule Royal Brunei Airlines Brunei to Singapore

Date	From	To	Departure	Arrival	Status	Details
Nov 14	BWN	SIN	09:20	11:12	Landed	Track >
Nov 13	BWN	SIN	09:16	10:59	Landed	Track >
Nov 11	BWN	SIN	09:17	11:03	Landed	Track >
Nov 10	BWN	SIN	09:13	10:57	Landed	Track >
Nov 09	BWN	SIN	09:14	11:01	Landed	Track >
Nov 08	BWN	SIN	09:59	11:44	Landed Late	Track >
Nov 07	BWN	SIN	09:16	11:14	Landed	Track >
Nov 06	BWN	SIN	09:20	11:13	Landed	Track >
Nov 04	BWN	SIN	09:16	11:02	Landed	Track >
Nov 03	BWN	SIN	09:08	10:55	Landed	Track >

Royal Brunei Airlines' Brunei–Singapore flight covers 1,278 km (794 mi) and runs six times a week: Monday, Tuesday, Wednesday, Friday, Saturday and Sunday. With 2 h 5 min in the timetable and a usual flight time of about 1 h 45 min, it often makes up time. Today it left on time and landed at 11:12, 8 minutes early.

< All Brunei BWN Departures All Singapore SIN Arrivals >

About BI 421

Royal Brunei Airlines Flight BI421 connects Brunei, Brunei to Singapore, Singapore, taking off from Brunei International Airport BWN and landing at Singapore Changi Airport SIN.

Route: Brunei International Airport BWN to Singapore Changi Airport SIN
Distance: 1,278 km (794 mi)
Typical flight time: 1 h 45 min
Flies: Mon, Tue, Wed, Fri, Sat, Sun
On time: 9 of the last 10
Average delay when late: 24 min

BI 421 FAQ

How long is the BI421 flight from Brunei to Singapore?: The timetable allows 2 h 5 min. Brunei to Singapore is 1,278 km (794 mi).
How often is BI421 from Brunei to Singapore late?: 1 of the last 10 flights arrived 15 or more minutes late; when late, by 24 minutes on average.
When was the latest BI421 flight from Brunei to Singapore?: The latest BI421 was the 09:15 (local time) departure from Brunei on 14 November 2026; it landed 8 minutes early.
Which days does BI421 fly from Brunei to Singapore?: Six times a week: Monday, Tuesday, Wednesday, Friday, Saturday and Sunday, based on the schedule of the last 7 days.
Which terminal does BI421 use?: It usually arrives at Terminal 2 at Singapore Changi Airport (SIN). Check the flight card above for today's terminal and gate.
What other flight numbers does BI421 have?: Also listed as RBA421 (Royal Brunei Airlines' ICAO code) and BI 421.

BI421 and Brunei BWN to Singapore SIN Flights

Other flights departing from Brunei BWN: BI773, BI871, BI513, BI1

Other flights arriving at Singapore SIN: SQ953, AK1721, SQ991

All flights connecting Brunei BWN to Singapore SIN.