What type of aircraft is N504SY?

N504SY is a Yabora Industria Aeronautica S ERJ 170-200 LR with 88 seats, according to the FAA aircraft register.

Which airline flies N504SY?

SkyWest Airlines (OO) flew N504SY most recently, according to US Department of Transportation flight records for July 2026.

Where does N504SY fly?

Its most frequent route in the last 12 months was Los Angeles to San Francisco (58 flights). It flew 1,479 flights in total, about 123 a month.

N504SY was built in 2021, so it is 5 years old.

Is N504SY usually on time?

84% of its flights from August 2025 to July 2026 arrived within 15 minutes of schedule. Punctuality depends far more on the route and the airline's day than on the aircraft itself.

US aircraft · OO

N504SY

Yabora Industria Aeronautica S ERJ 170-200 LR, SkyWest Airlines

N504SY is a Yabora Industria Aeronautica S ERJ 170-200 LR flown by SkyWest Airlines, built in 2021. From August 2025 to July 2026 it flew 1,479 flights, most often Los Angeles to San Francisco, and 84% arrived within 15 minutes of schedule.

1,479

flights in 12 months

84%

on time (within 15 min)

airports

5 yr

age

August 2025 to July 2026. Flights from US Bureau of Transportation Statistics on-time records (public domain); aircraft details from the FAA aircraft register.

Where N504SY flies

Los Angeles to San FranciscoLAX to SFO58 flights
San Francisco to Los AngelesSFO to LAX54 flights
Los Angeles to Oklahoma CityLAX to OKC22 flights
Oklahoma City to Los AngelesOKC to LAX21 flights
Phoenix to PascoPHX to PSC20 flights
Pasco to PhoenixPSC to PHX20 flights
Phoenix to Salt Lake CityPHX to SLC20 flights
Austin to Los AngelesAUS to LAX20 flights
Los Angeles to AustinLAX to AUS20 flights
Phoenix to TucsonPHX to TUS19 flights

Its most frequent routes over the period. Each links to that route's punctuality page.

Month by month

Share of N504SY flights arriving within 15 minutes of schedule, by month. Green is the best month, orange the worst.

See the figures

Month	On time	Cancelled	Flights
August 2025	91%	0%	138
September 2025	82%	0%	112
October 2025	79%	0%	109
November 2025	84%	2.1%	95
December 2025	79%	2.5%	122
January 2026	95%	0%	111
February 2026	83%	0%	115
March 2026	95%	1.3%	157
April 2026	90%	0%	98
May 2026	77%	0%	134
June 2026	78%	0%	140
July 2026	73%	0.7%	148

Questions and answers

What type of aircraft is N504SY?: N504SY is a Yabora Industria Aeronautica S ERJ 170-200 LR with 88 seats, according to the FAA aircraft register.
Which airline flies N504SY?: SkyWest Airlines (OO) flew N504SY most recently, according to US Department of Transportation flight records for July 2026.
Where does N504SY fly?: Its most frequent route in the last 12 months was Los Angeles to San Francisco (58 flights). It flew 1,479 flights in total, about 123 a month.
How old is N504SY?: N504SY was built in 2021, so it is 5 years old.
Is N504SY usually on time?: 84% of its flights from August 2025 to July 2026 arrived within 15 minutes of schedule. Punctuality depends far more on the route and the airline's day than on the aircraft itself.

See how SkyWest Airlines compares with every other US airline.

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