FlyerIntel

Routes

These are the routes with at least 10,000 flights in the analysis period. A route with 750 to 9,999 has a page and a score too, reached by search or a link, but is not listed here. Each listed route has enough history to say something meaningful about reliability, best departure times and how carriers compare. Direction matters: a route and its return are analyzed separately.

419 directional pairs between the covered airports clear that bar, carrying 6,374,871 flights over July 2023 – July 2026. The 120 busiest are below; the rest are reached by origin airport or by searching.

Busiest routes between covered airports

Ordered by flights operated, July 2023 – July 2026. Score is the FlyerIntel Route Reliability Score.

Busiest routes between covered airports
RankRouteFlightsOn timeScore
1LAX → SFO Los Angeles to San Francisco34,81969.3%55
2SFO → LAX San Francisco to Los Angeles34,80477.1%67
3LGA → ORD New York to Chicago33,92775.0%42
4ORD → LGA Chicago to New York33,92673.4%41
5LAX → JFK Los Angeles to New York31,15379.8%63
6JFK → LAX New York to Los Angeles31,15179.8%67
7DCA → BOS Washington to Boston28,56976.0%47
8BOS → DCA Boston to Washington28,56977.3%52
9PHX → DEN Phoenix to Denver28,45278.7%68
10DEN → PHX Denver to Phoenix28,38775.8%64
11LAX → LAS Los Angeles to Las Vegas28,25576.7%66
12LAS → LAX Las Vegas to Los Angeles28,23977.6%69
13MCO → ATL Orlando to Atlanta26,73774.3%53
14ATL → MCO Atlanta to Orlando26,72471.3%50
15ATL → LGA Atlanta to New York24,62076.4%54
16LGA → ATL New York to Atlanta24,61478.4%56
17DEN → LAS Denver to Las Vegas24,39774.3%61
18LAS → DEN Las Vegas to Denver24,37976.7%63
19DEN → SLC Denver to Salt Lake City24,32977.3%69
20SLC → DEN Salt Lake City to Denver24,31777.7%68
21DEN → LAX Denver to Los Angeles23,74578.9%70
22LAX → DEN Los Angeles to Denver23,68282.7%75
23SEA → LAX Seattle to Los Angeles23,18182.5%79
24LAX → SEA Los Angeles to Seattle23,17784.8%82
25LGA → BOS New York to Boston22,96278.7%51
26BOS → LGA Boston to New York22,95581.1%53
27ATL → FLL Atlanta to Fort Lauderdale22,81772.0%52
28FLL → ATL Fort Lauderdale to Atlanta22,81271.4%49
29LAX → PHX Los Angeles to Phoenix22,56081.5%76
30PHX → LAX Phoenix to Los Angeles22,50183.0%80
31SEA → ANC Seattle to Anchorage22,36375.8%71
32ANC → SEA Anchorage to Seattle22,35284.8%82
33SEA → PHX Seattle to Phoenix22,32879.4%75
34PHX → SEA Phoenix to Seattle22,31582.7%80
35ORD → BOS Chicago to Boston21,89572.4%46
36BOS → ORD Boston to Chicago21,88476.9%54
37ORD → LAX Chicago to Los Angeles21,17376.4%61
38DCA → ATL Washington to Atlanta21,17280.1%59
39ATL → DCA Atlanta to Washington21,17173.7%51
40LAX → ORD Los Angeles to Chicago21,16780.9%67
41SFO → JFK San Francisco to New York20,82080.4%66
42JFK → SFO New York to San Francisco20,81976.9%62
43SEA → SFO Seattle to San Francisco20,77268.7%53
44SFO → SEA San Francisco to Seattle20,76775.9%65
45DFW → LAX Dallas–Fort Worth to Los Angeles20,66072.8%54
46LAX → DFW Los Angeles to Dallas–Fort Worth20,64976.9%56
47PHX → LAS Phoenix to Las Vegas20,51977.9%67
48MCO → EWR Orlando to Newark20,51074.1%43
49EWR → MCO Newark to Orlando20,50676.4%51
50LAS → PHX Las Vegas to Phoenix20,47979.0%69
51DFW → ORD Dallas–Fort Worth to Chicago20,47872.9%48
52ORD → DFW Chicago to Dallas–Fort Worth20,45973.0%48
53ATL → DFW Atlanta to Dallas–Fort Worth20,33472.8%47
54DFW → ATL Dallas–Fort Worth to Atlanta20,32975.0%52
55SEA → DEN Seattle to Denver20,29177.9%70
56DEN → SEA Denver to Seattle20,29074.7%65
57LAS → SAN Las Vegas to San Diego20,22169.0%53
58DCA → ORD Washington to Chicago20,17079.0%55
59ORD → DCA Chicago to Washington20,15973.0%46
60DFW → LGA Dallas–Fort Worth to New York20,15173.0%43
61LGA → DFW New York to Dallas–Fort Worth20,14474.7%44
62ATL → MIA Atlanta to Miami20,13071.5%50
63SAN → LAS San Diego to Las Vegas20,12175.2%59
64MIA → ATL Miami to Atlanta20,12171.9%50
65SAN → SFO San Diego to San Francisco20,04066.7%47
66SFO → SAN San Francisco to San Diego19,94971.4%56
67ATL → TPA Atlanta to Tampa19,94973.7%54
68TPA → ATL Tampa to Atlanta19,93478.4%61
69ORD → DEN Chicago to Denver19,50277.0%61
70DEN → ORD Denver to Chicago19,47574.2%56
71MCO → SJU Orlando to San Juan19,40673.7%58
72SJU → MCO San Juan to Orlando19,39977.0%60
73SEA → LAS Seattle to Las Vegas19,23077.6%71
74LAS → SEA Las Vegas to Seattle19,21480.2%74
75DEN → DFW Denver to Dallas–Fort Worth18,86974.5%51
76DFW → DEN Dallas–Fort Worth to Denver18,86470.4%45
77DEN → MSP Denver to Minneapolis18,82977.5%68
78MSP → DEN Minneapolis to Denver18,78579.5%71
79EWR → ATL Newark to Atlanta18,66175.6%48
80ATL → EWR Atlanta to Newark18,65672.5%41
81ORD → ATL Chicago to Atlanta18,58875.6%55
82ATL → ORD Atlanta to Chicago18,58874.1%53
83ORD → EWR Chicago to Newark18,46371.7%38
84EWR → ORD Newark to Chicago18,45473.5%44
85ORD → MSP Chicago to Minneapolis18,31073.3%53
86MSP → ORD Minneapolis to Chicago18,30675.4%56
87SFO → LAS San Francisco to Las Vegas18,26373.3%57
88LAS → SFO Las Vegas to San Francisco18,26266.4%49
89ATL → BWI Atlanta to Baltimore18,14875.5%58
90DEN → ATL Denver to Atlanta18,12478.3%69
91ATL → DEN Atlanta to Denver18,10377.1%66
92BWI → ATL Baltimore to Atlanta18,06578.7%64
93LGA → MIA New York to Miami17,94974.0%46
94MIA → LGA Miami to New York17,92971.1%42
95ATL → PHL Atlanta to Philadelphia17,90974.7%53
96PHL → ATL Philadelphia to Atlanta17,90478.5%61
97ORD → PHX Chicago to Phoenix17,87377.8%63
98PHX → ORD Phoenix to Chicago17,85779.9%68
99SLC → PHX Salt Lake City to Phoenix17,77883.7%79
100PHX → SLC Phoenix to Salt Lake City17,75984.5%82
101PHX → SAN Phoenix to San Diego17,71475.8%65
102SAN → PHX San Diego to Phoenix17,68577.5%64
103LAS → DFW Las Vegas to Dallas–Fort Worth17,67978.1%56
104DFW → LAS Dallas–Fort Worth to Las Vegas17,67868.8%42
105SAN → DEN San Diego to Denver17,51578.9%68
106DEN → SAN Denver to San Diego17,46875.5%65
107PHL → MCO Philadelphia to Orlando17,46772.7%45
108MCO → PHL Orlando to Philadelphia17,46372.2%43
109ORD → DTW Chicago to Detroit17,42476.7%54
110DTW → ORD Detroit to Chicago17,41777.7%56
111BOS → JFK Boston to New York17,28077.0%49
112JFK → BOS New York to Boston17,27974.8%43
113ORD → MCO Chicago to Orlando17,13375.3%56
114SFO → DEN San Francisco to Denver17,11976.4%66
115MCO → ORD Orlando to Chicago17,11773.8%52
116DEN → SFO Denver to San Francisco17,10967.8%50
117LAX → HNL Los Angeles to Honolulu17,04978.8%71
118HNL → LAX Honolulu to Los Angeles17,04083.4%77
119ORD → IAH Chicago to Houston17,01777.0%61
120IAH → ORD Houston to Chicago17,01376.9%58

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

What separates them

The same period, the same source, the same definition of late.

Across the 419 published pairs with a recorded on-time rate, arrivals run from 88.2% on LAX → SLC down to 64.3% on DFW → SFO — 23.9 percentage points between the two ends of the same domestic network.

Both figures are taken over at least 10,000 flights, so neither end is a small sample. A route is directional here because the two directions genuinely differ — different departure banks, different aircraft rotations, different weather at the airport the delay is inherited from — and averaging them would hide exactly the difference a traveler is picking between. Routes ranked by reliability score →

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

Browse by origin airport

Ordered by how many published routes leave each one. Each entry opens that airport’s full route directory — every published route touching it, both directions.

ATLAtlanta36 routes · 546,603 flightsORDChicago27 routes · 447,466 flightsDENDenver24 routes · 397,014 flightsDFWDallas–Fort Worth23 routes · 339,485 flightsLAXLos Angeles19 routes · 368,236 flightsLASLas Vegas18 routes · 294,624 flightsSFOSan Francisco16 routes · 258,012 flightsBOSBoston16 routes · 249,014 flightsPHXPhoenix16 routes · 256,509 flightsMCOOrlando16 routes · 257,939 flightsSEASeattle15 routes · 252,879 flightsLGANew York14 routes · 242,278 flightsCLTCharlotte14 routes · 176,204 flightsEWRNewark12 routes · 171,872 flightsMIAMiami12 routes · 162,978 flightsIAHHouston11 routes · 148,119 flightsJFKNew York9 routes · 146,111 flightsSANSan Diego9 routes · 144,379 flightsDCAWashington8 routes · 133,850 flightsSLCSalt Lake City7 routes · 103,329 flightsDTWDetroit7 routes · 89,931 flightsBNANashville7 routes · 87,184 flightsFLLFort Lauderdale6 routes · 85,404 flightsPHLPhiladelphia6 routes · 87,341 flightsSMFSacramento6 routes · 85,154 flightsPDXPortland6 routes · 77,125 flightsAUSAustin5 routes · 67,227 flightsSNASanta Ana5 routes · 63,943 flightsBWIBaltimore4 routes · 57,138 flightsSJCSan Jose4 routes · 59,526 flightsRDURaleigh–Durham4 routes · 45,070 flightsMSPMinneapolis3 routes · 48,234 flightsMCIKansas City3 routes · 34,297 flightsTPATampa2 routes · 30,812 flightsSJUSan Juan2 routes · 30,744 flightsINDIndianapolis2 routes · 23,890 flightsOAKOakland2 routes · 23,558 flightsDALDallas2 routes · 23,446 flightsSTLSt. Louis2 routes · 22,950 flightsCLECleveland2 routes · 21,846 flightsIADWashington2 routes · 21,583 flightsANCAnchorage1 routes · 22,352 flightsHNLHonolulu1 routes · 17,040 flightsSATSan Antonio1 routes · 13,618 flightsMSYNew Orleans1 routes · 13,485 flightsBURBurbank1 routes · 13,445 flightsJAXJacksonville1 routes · 13,132 flightsHOUHouston1 routes · 12,672 flightsCMHColumbus1 routes · 12,181 flightsMDWChicago1 routes · 11,324 flightsMKEMilwaukee1 routes · 11,098 flightsMEMMemphis1 routes · 10,487 flightsPITPittsburgh1 routes · 10,277 flightsOMAOmaha1 routes · 10,177 flightsTUSTucson1 routes · 10,156 flightsABQAlbuquerque1 routes · 10,123 flights

Source: FlyerIntel analysis of US DOT BTS data · July 2023 – July 2026 · Counts cover routes to other covered airports only. A covered airport also serves destinations outside that set; those pairings have profiles but are not counted here.

Looking for a route not listed? Search it above — every direction with enough history has a profile.

Analysis last recomputed