Most On-Time Flights on America's Busiest Routes
Of the 100 busiest US routes, the most reliable flight is United 643 from Las Vegas (LAS) to San Francisco (SFO), leaving at 6:00 AM: on time 97% of the time over 143 flights. On the busiest route, ORD to LGA, the most on-time choice is Delta 2767 at 6:00 AM (92%).
From US DOT on-time records, Jun 2025 to May 2026.
The 10 most reliable flights on the busiest routes
| # | Flight | Route | Departs | On time |
|---|---|---|---|---|
| 1 | United 643Boeing 737-800 or 737 MAX 8 | LAS → SFOLas Vegas to San Francisco | 6:00 AM → 7:48 AM | 97%143 flights |
| 2 | United 1093Boeing 737-900ER or 737-800 | DEN → LAXDenver to Los Angeles | 6:00 AM → 7:36 AM | 96%141 flights |
| 3 | United 596Airbus A321neo | LAS → DENLas Vegas to Denver | 5:30 AM → 8:35 AM | 96%362 flights |
| 4 | SkyWest 4057Embraer E175 | PHX → LAXPhoenix to Los Angeles | 6:00 AM → 7:33 AM | 96%325 flights |
| 5 | United 2039Boeing 737 MAX 9 or 737 MAX 8 | LAS → LAXLas Vegas to Los Angeles | 6:00 AM → 7:20 AM | 96%272 flights |
| 6 | Delta 2721Airbus A220-300 or Boeing 737-800 | SFO → SEASan Francisco to Seattle | 6:00 AM → 8:16 AM | 96%346 flights |
| 7 | Delta 2444Boeing 737-800 | PHX → SEAPhoenix to Seattle | 6:15 AM → 9:24 AM | 96%360 flights |
| 8 | SkyWest 5683Embraer E175 | SLC → DENSalt Lake City to Denver | 5:00 AM → 6:48 AM | 95%264 flights |
| 9 | SkyWest 5659Embraer E175 | SEA → LAXSeattle to Los Angeles | 12:22 PM → 3:23 PM | 95%130 flights |
| 10 | Alaska 1028Boeing 717 | HNL → KOAHonolulu, Oahu to Kailua-Kona | 7:05 AM → 8:01 AM | 95%140 flights |
The most on-time flight on each of the 100 busiest routes
Busiest route first. Tap a route for every flight on it, the best time to fly and the best airline.
| # | Route | Most on-time flight | Its on-time rate | Route average |
|---|---|---|---|---|
| 1 | ORD → LGAChicago to New York · 11,634 flights a year | Delta 2767departs 6:00 AM | 92% | 67% |
| 2 | LGA → ORDNew York to Chicago · 11,633 flights a year | American 462departs 6:38 AM | 93% | 67% |
| 3 | SFO → LAXSan Francisco to Los Angeles · 10,834 flights a year | Delta 1598departs 6:00 AM | 94% | 76% |
| 4 | LAX → SFOLos Angeles to San Francisco · 10,832 flights a year | Delta 1421departs 6:30 AM | 95% | 68% |
| 5 | JFK → LAXNew York to Los Angeles · 10,337 flights a year | American 1departs 7:15 AM | 89% | 78% |
| 6 | LAX → JFKLos Angeles to New York · 10,337 flights a year | Delta 915departs 11:55 PM | 88% | 79% |
| 7 | OGG → HNLKahului to Honolulu, Oahu · 10,290 flights a year | Alaska 1005departs 6:00 AM | 93% | 85% |
| 8 | HNL → OGGHonolulu, Oahu to Kahului · 10,288 flights a year | Alaska 1016departs 6:10 AM | 93% | 85% |
| 9 | BOS → DCABoston to Washington · 9,071 flights a year | American 2159departs 6:00 AM | 91% | 74% |
| 10 | DCA → BOSWashington to Boston · 9,071 flights a year | Republic 5698departs 6:59 AM | 92% | 71% |
| 11 | DEN → PHXDenver to Phoenix · 8,894 flights a year | United 1593departs 9:44 AM | 89% | 75% |
| 12 | PHX → DENPhoenix to Denver · 8,893 flights a year | Frontier 1376departs 6:50 AM | 86% | 77% |
| 13 | LAS → LAXLas Vegas to Los Angeles · 8,424 flights a year | United 2039departs 6:00 AM | 96% | 79% |
| 14 | LAX → LASLos Angeles to Las Vegas · 8,420 flights a year | Delta 2253departs 7:35 AM | 95% | 77% |
| 15 | ATL → LGAAtlanta to New York · 8,278 flights a year | Delta 323departs 7:30 AM | 91% | 73% |
| 16 | LGA → ATLNew York to Atlanta · 8,276 flights a year | Delta 342departs 6:59 AM | 92% | 76% |
| 17 | ATL → MCOAtlanta to Orlando · 8,229 flights a year | Delta 2204departs 7:15 AM | 88% | 69% |
| 18 | MCO → ATLOrlando to Atlanta · 8,226 flights a year | Delta 1494departs 6:15 AM | 94% | 75% |
| 19 | LIH → HNLLihue, Kauai to Honolulu, Oahu · 7,810 flights a year | Alaska 1004departs 6:00 AM | 94% | 84% |
| 20 | HNL → LIHHonolulu, Oahu to Lihue, Kauai · 7,804 flights a year | Alaska 1003departs 5:36 AM | 95% | 85% |
| 21 | DEN → SLCDenver to Salt Lake City · 7,765 flights a year | Frontier 3861departs 6:11 AM | 93% | 77% |
| 22 | SLC → DENSalt Lake City to Denver · 7,763 flights a year | SkyWest 5683departs 5:00 AM | 95% | 77% |
| 23 | LAX → DENLos Angeles to Denver · 7,729 flights a year | United 2610departs 7:03 PM | 91% | 82% |
| 24 | DEN → LAXDenver to Los Angeles · 7,728 flights a year | United 1093departs 6:00 AM | 96% | 79% |
| 25 | LAX → PHXLos Angeles to Phoenix · 7,608 flights a year | American 2027departs 6:10 AM | 93% | 81% |
| 26 | PHX → LAXPhoenix to Los Angeles · 7,608 flights a year | SkyWest 4057departs 6:00 AM | 96% | 83% |
| 27 | ORD → BOSChicago to Boston · 7,561 flights a year | JetBlue 312departs 11:00 AM | 75% | 68% |
| 28 | BOS → ORDBoston to Chicago · 7,556 flights a year | United 1414departs 6:00 AM | 94% | 72% |
| 29 | SEA → LAXSeattle to Los Angeles · 7,410 flights a year | SkyWest 5659departs 12:22 PM | 95% | 83% |
| 30 | LAX → SEALos Angeles to Seattle · 7,405 flights a year | Delta 1714departs 9:56 AM | 92% | 85% |
| 31 | KOA → HNLKailua-Kona to Honolulu, Oahu · 7,319 flights a year | Alaska 1017departs 6:00 AM | 91% | 85% |
| 32 | HNL → KOAHonolulu, Oahu to Kailua-Kona · 7,317 flights a year | Alaska 1028departs 7:05 AM | 95% | 86% |
| 33 | PHX → SEAPhoenix to Seattle · 7,317 flights a year | Delta 2444departs 6:15 AM | 96% | 83% |
| 34 | SEA → PHXSeattle to Phoenix · 7,317 flights a year | Delta 2419departs 8:55 AM | 92% | 79% |
| 35 | ATL → FLLAtlanta to Fort Lauderdale · 7,174 flights a year | Delta 1334departs 7:25 AM | 88% | 69% |
| 36 | FLL → ATLFort Lauderdale to Atlanta · 7,168 flights a year | Delta 1168departs 5:29 AM | 95% | 71% |
| 37 | LGA → BOSNew York to Boston · 7,148 flights a year | Republic 5759departs 8:00 AM | 87% | 73% |
| 38 | BOS → LGABoston to New York · 7,147 flights a year | Republic 4424departs 6:00 AM | 92% | 77% |
| 39 | DEN → LASDenver to Las Vegas · 7,066 flights a year | United 2316departs 8:00 AM | 93% | 75% |
| 40 | LAS → DENLas Vegas to Denver · 7,060 flights a year | United 596departs 5:30 AM | 96% | 77% |
| 41 | LAX → ORDLos Angeles to Chicago · 6,981 flights a year | American 383departs 6:04 AM | 91% | 77% |
| 42 | ORD → LAXChicago to Los Angeles · 6,981 flights a year | United 2361departs 7:00 AM | 88% | 74% |
| 43 | DFW → ORDDallas-Fort Worth to Chicago · 6,933 flights a year | United 1634departs 9:43 AM | 81% | 68% |
| 44 | ORD → DFWChicago to Dallas-Fort Worth · 6,925 flights a year | United 539departs 7:05 AM | 83% | 70% |
| 45 | DCA → ORDWashington to Chicago · 6,922 flights a year | United 1793departs 6:30 AM | 91% | 74% |
| 46 | ORD → DCAChicago to Washington · 6,918 flights a year | United 1077departs 7:00 AM | 92% | 69% |
| 47 | DFW → LGADallas-Fort Worth to New York · 6,856 flights a year | Delta 551departs 7:00 AM | 86% | 67% |
| 48 | LGA → DFWNew York to Dallas-Fort Worth · 6,852 flights a year | American 1597departs 6:00 AM | 91% | 70% |
| 49 | DCA → ATLWashington to Atlanta · 6,819 flights a year | Delta 410departs 6:00 AM | 94% | 78% |
| 50 | ATL → DCAAtlanta to Washington · 6,817 flights a year | Delta 926departs 7:25 AM | 83% | 69% |
| 51 | SFO → SEASan Francisco to Seattle · 6,768 flights a year | Delta 2721departs 6:00 AM | 96% | 74% |
| 52 | SEA → SFOSeattle to San Francisco · 6,761 flights a year | SkyWest 3707departs 1:45 PM | 79% | 69% |
| 53 | DFW → ATLDallas-Fort Worth to Atlanta · 6,739 flights a year | Delta 401departs 5:49 AM | 93% | 75% |
| 54 | ATL → DFWAtlanta to Dallas-Fort Worth · 6,735 flights a year | American 2770departs 6:04 AM | 91% | 73% |
| 55 | SEA → ANCSeattle to Anchorage · 6,717 flights a year | Alaska 85departs 7:05 AM | 83% | 74% |
| 56 | ANC → SEAAnchorage to Seattle · 6,715 flights a year | Delta 925departs 1:34 AM | 91% | 85% |
| 57 | JFK → SFONew York to San Francisco · 6,707 flights a year | American 76departs 6:29 AM | 89% | 75% |
| 58 | SFO → JFKSan Francisco to New York · 6,705 flights a year | JetBlue 316departs 8:36 AM | 92% | 80% |
| 59 | EWR → MCONewark to Orlando · 6,654 flights a year | JetBlue 927departs 6:00 AM | 89% | 76% |
| 60 | MCO → EWROrlando to Newark · 6,653 flights a year | United 1105departs 7:00 AM | 92% | 73% |
| 61 | SAN → SFOSan Diego to San Francisco · 6,543 flights a year | United 2117departs 4:21 PM | 80% | 68% |
| 62 | SFO → SANSan Francisco to San Diego · 6,524 flights a year | United 444departs 8:10 AM | 84% | 68% |
| 63 | MCO → ORDOrlando to Chicago · 6,422 flights a year | American 938departs 6:39 AM | 89% | 70% |
| 64 | ORD → MCOChicago to Orlando · 6,419 flights a year | United 2280departs 7:23 AM | 90% | 73% |
| 65 | ORD → ATLChicago to Atlanta · 6,391 flights a year | Delta 1264departs 5:30 AM | 90% | 74% |
| 66 | ATL → ORDAtlanta to Chicago · 6,390 flights a year | Delta 1178departs 7:25 AM | 87% | 71% |
| 67 | HNL → ITOHonolulu, Oahu to Hilo · 6,340 flights a year | Alaska 1022departs 7:00 AM | 92% | 86% |
| 68 | ITO → HNLHilo to Honolulu, Oahu · 6,336 flights a year | Alaska 1001departs 6:00 AM | 95% | 84% |
| 69 | MSP → ORDMinneapolis to Chicago · 6,331 flights a year | United 307departs 6:00 AM | 88% | 70% |
| 70 | ORD → MSPChicago to Minneapolis · 6,330 flights a year | United 2232departs 7:05 AM | 90% | 69% |
| 71 | SEA → DENSeattle to Denver · 6,325 flights a year | United 1505departs 8:55 AM | 89% | 77% |
| 72 | DEN → SEADenver to Seattle · 6,318 flights a year | United 2271departs 7:45 AM | 90% | 73% |
| 73 | DFW → LAXDallas-Fort Worth to Los Angeles · 6,270 flights a year | Delta 439departs 6:40 AM | 93% | 72% |
| 74 | EWR → ATLNewark to Atlanta · 6,268 flights a year | Delta 1673departs 7:00 AM | 87% | 77% |
| 75 | ATL → EWRAtlanta to Newark · 6,263 flights a year | United 299departs 6:00 AM | 91% | 72% |
| 76 | LAX → DFWLos Angeles to Dallas-Fort Worth · 6,263 flights a year | American 971departs 1:22 AM | 86% | 75% |
| 77 | ATL → MIAAtlanta to Miami · 6,245 flights a year | Delta 2836departs 7:25 AM | 87% | 70% |
| 78 | MIA → ATLMiami to Atlanta · 6,240 flights a year | Delta 1249departs 6:00 AM | 92% | 73% |
| 79 | ORD → DENChicago to Denver · 6,198 flights a year | United 2666departs 5:00 AM | 93% | 74% |
| 80 | DEN → ORDDenver to Chicago · 6,192 flights a year | United 1377departs 6:00 AM | 88% | 70% |
| 81 | ATL → TPAAtlanta to Tampa · 6,139 flights a year | Delta 2605departs 7:25 AM | 91% | 71% |
| 82 | TPA → ATLTampa to Atlanta · 6,136 flights a year | Delta 2330departs 5:30 AM | 96% | 79% |
| 83 | LAS → SANLas Vegas to San Diego · 6,131 flights a year | SkyWest 3741departs 12:59 PM | 80% | 68% |
| 84 | SAN → LASSan Diego to Las Vegas · 6,129 flights a year | SkyWest 3434departs 9:40 AM | 69% | 76% |
| 85 | IAH → ORDHouston to Chicago · 6,063 flights a year | United 2182departs 7:20 AM | 89% | 75% |
| 86 | LAS → PHXLas Vegas to Phoenix · 6,060 flights a year | American 2953departs 10:04 AM | 92% | 78% |
| 87 | ORD → IAHChicago to Houston · 6,059 flights a year | United 1231departs 7:30 AM | 89% | 75% |
| 88 | PHX → LASPhoenix to Las Vegas · 6,055 flights a year | Frontier 3983departs 11:33 AM | 93% | 79% |
| 89 | SFO → LASSan Francisco to Las Vegas · 6,055 flights a year | Alaska 718departs 7:20 AM | 90% | 76% |
| 90 | LAS → SFOLas Vegas to San Francisco · 6,044 flights a year | United 643departs 6:00 AM | 97% | 66% |
| 91 | MIA → LGAMiami to New York · 6,036 flights a year | American 1046departs 8:45 AM | 86% | 67% |
| 92 | LGA → MIANew York to Miami · 6,031 flights a year | American 1249departs 6:00 AM | 92% | 70% |
| 93 | DEN → DFWDenver to Dallas-Fort Worth · 6,021 flights a year | Frontier 1324departs 5:05 AM | 89% | 75% |
| 94 | DFW → DENDallas-Fort Worth to Denver · 6,016 flights a year | United 773departs 5:30 AM | 92% | 69% |
| 95 | ORD → EWRChicago to Newark · 5,992 flights a year | United 563departs 7:00 AM | 90% | 69% |
| 96 | EWR → ORDNewark to Chicago · 5,984 flights a year | United 1525departs 10:22 AM | 80% | 71% |
| 97 | DTW → ORDDetroit to Chicago · 5,961 flights a year | SkyWest 4754departs 5:48 AM | 85% | 72% |
| 98 | ORD → DTWChicago to Detroit · 5,961 flights a year | Delta 2039departs 7:10 AM | 87% | 71% |
| 99 | DEN → SANDenver to San Diego · 5,882 flights a year | United 2309departs 7:45 AM | 91% | 76% |
| 100 | SAN → DENSan Diego to Denver · 5,880 flights a year | United 2476departs 8:45 AM | 89% | 79% |
Most on-time flights by airport
Chicago (ORD)Denver (DEN)Atlanta (ATL)Dallas-Fort Worth (DFW)Phoenix (PHX)Los Angeles (LAX)Charlotte (CLT)Las Vegas (LAS)Seattle (SEA)Orlando (MCO)San Francisco (SFO)Washington (DCA)Boston (BOS)New York (LGA)Detroit (DTW)Newark (EWR)Salt Lake City (SLC)Houston (IAH)Minneapolis (MSP)Miami (MIA)Nashville (BNA)New York (JFK)San Diego (SAN)Philadelphia (PHL)Baltimore (BWI)Austin (AUS)Fort Lauderdale (FLL)Tampa (TPA)Chicago (MDW)Dallas (DAL)
Frequently asked
- What counts as an on-time flight?
- The US Department of Transportation counts a flight as on time when it arrives less than 15 minutes after its scheduled arrival time. Cancelled and diverted flights are not on time.
- Why are so many of the most reliable flights in the morning?
- Early flights usually start the day with the aircraft already at the gate, before delays from earlier flights and afternoon thunderstorms build up through the day.
- Can I find the most reliable flight for my own trip and date?
- Yes. Smart Flight Search ranks every flight on your route for your travel date, including connections, legroom and aircraft age.
- How often is this list updated?
- It uses the latest 12 months of US DOT on-time records (currently Jun 2025 to May 2026) and is refreshed when new data is published. Flights change schedules, so confirm the time when you book.
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See ranking →Historical odds, not a guarantee. Built from US Department of Transportation on-time reports for US airlines that report to the DOT; schedules are flights operated recently, so confirm times when you book. ATIS Alerts is not affiliated with any airline.