All routes to and from ONT

Ontario International Airport’s own profile links its busiest, most and least reliable routes only. This is the complete set: every directional route touching ONT with enough history to clear FlyerIntel’s publishing bar, July 2023 – June 2026.

Routes from ONT

16 directional routes with ONT as the origin, ordered by flights operated.

Routes from ONT
#	Route	Flights	On time	Score
1	ONT → PHX Phoenix	9,475	85.2%	80
2	ONT → DEN Denver	8,431	82.4%	74
3	ONT → LAS Las Vegas	7,978	78.1%	67
4	ONT → SEA Seattle	7,496	86.5%	82
5	ONT → DFW Dallas–Fort Worth	7,076	80.0%	59
6	ONT → SMF Sacramento	5,967	87.0%	88
7	ONT → OAK Oakland	4,695	87.0%	87
8	ONT → SFO San Francisco	4,307	72.1%	57
9	ONT → SJC San Jose	4,120	87.0%	88
10	ONT → SLC Salt Lake City	3,610	91.9%	84
11	ONT → ATL Atlanta	2,831	91.4%	85
12	ONT → PDX Portland	1,737	87.4%	83
13	ONT → IAH Houston	1,154	81.4%	69
14	ONT → MDW Chicago	1,084	89.2%	93
15	ONT → AUS Austin	1,074	83.9%	83
16	ONT → HOU Houston	987	79.1%	77

Source: FlyerIntel analysis of US DOT BTS data · July 2023 – June 2026

Routes to ONT

16 directional routes with ONT as the destination, ordered by flights operated.

Routes to ONT
#	Route	Flights	On time	Score
1	PHX → ONT Phoenix	9,469	80.1%	75
2	DEN → ONT Denver	8,448	74.5%	64
3	LAS → ONT Las Vegas	7,944	78.2%	72
4	SEA → ONT Seattle	7,500	82.3%	78
5	DFW → ONT Dallas–Fort Worth	7,076	69.8%	44
6	SMF → ONT Sacramento	5,998	85.9%	86
7	OAK → ONT Oakland	4,688	84.7%	84
8	SFO → ONT San Francisco	4,307	80.8%	70
9	SJC → ONT San Jose	4,114	85.2%	86
10	SLC → ONT Salt Lake City	3,611	88.9%	86
11	ATL → ONT Atlanta	2,831	76.9%	65
12	PDX → ONT Portland	1,737	85.3%	77
13	DAL → ONT Dallas	1,161	71.3%	60
14	MDW → ONT Chicago	1,085	77.3%	68
15	AUS → ONT Austin	1,072	72.6%	66
16	HOU → ONT Houston	987	80.3%	76

Source: FlyerIntel analysis of US DOT BTS data · July 2023 – June 2026

← Back to the ONT profile

Analysis last recomputed September 15, 2026