Flights

A flight number is a slot in a carrier’s schedule, and two departures on the same route can perform very differently. FlyerIntel publishes a profile where a number has operated the same route at least 600 times and is still flying — 2,707 of them.

Most reliable flights

Among those with a published profile.

Flight	Route	Operations	On time
DL1535	PHX → SLC	754	96.7%
DL1270	PDX → SLC	754	96.5%
DL2674	LAS → SLC	1,006	96.5%
UA2431	IAH → LAX	832	96.4%
UA1339	LAX → DEN	944	96.3%
UA459	PDX → DEN	767	96.3%
DL2178	SFO → MSP	753	96.2%
DL2369	PDX → MSP	748	96.2%
UA2608	LAS → IAH	830	96.0%
DL1526	SMF → SLC	754	95.9%
DL1331	SFO → SLC	754	95.5%
DL2844	LAS → SEA	1,005	95.4%
WN4	HOU → DAL	636	95.4%
DL1117	SAN → SLC	754	95.3%
DL1598	SFO → LAX	745	95.3%
DL2221	BNA → MSP	1,096	95.2%
DL1282	LAS → MSP	938	95.2%
UA2022	SJU → IAD	643	95.1%
AA548	JAX → CLT	621	95.1%
DL1344	AUS → ATL	1,096	95.1%
DL1019	BOS → DTW	754	95.0%
DL943	SEA → MSP	754	94.9%
DL662	PDX → ATL	754	94.9%
DL1385	RSW → ATL	754	94.8%
DL1405	CLT → DTW	869	94.8%

Most frequently operated

Flight	Route	Operations	On time
AA162	HNL → LAX	1,096	84.2%
AS1	DCA → SEA	1,096	85.9%
DL1780	BOS → SJU	1,096	80.2%
DL2664	BUF → ATL	1,096	84.6%
AA1020	DTW → MIA	1,096	88.3%
UA2088	SJU → ORD	1,096	75.0%
DL774	ATL → SEA	1,096	84.3%
UA1556	EWR → SJU	1,096	77.8%
UA2143	EWR → SJU	1,096	75.2%
DL2601	BWI → DTW	1,096	93.5%
DL526	ATL → SLC	1,096	82.0%
DL904	ATL → SMF	1,096	88.3%
DL1510	MIA → ATL	1,096	73.7%
DL1344	AUS → ATL	1,096	95.1%
DL1510	ATL → MIA	1,096	81.0%
AA1604	SAT → MIA	1,096	91.2%
UA1170	LAX → HNL	1,096	82.1%
UA384	DEN → HNL	1,096	79.3%
DL1658	ATL → MCO	1,096	79.8%
AA31	LAX → HNL	1,096	85.2%
DL480	LAX → HNL	1,096	83.7%
DL1854	SJU → JFK	1,096	94.4%
UA668	SJU → IAH	1,096	75.7%
DL1030	ATL → MCO	1,096	78.8%
UA253	IAH → HNL	1,096	69.9%

Source: FlyerIntel analysis of US DOT BTS data · 36 months of records