Route on-time record
EYW to MIA: most on-time flights and the best time to fly
Key West (Key West International Airport) to Miami (Miami International Airport). 1,246 nonstop flights in Jun 2025 to May 2026, 80% arrived within 15 minutes and 0.6% were cancelled. The most reliable flight number was Envoy 4044 at 6:45 AM.
Flying on a specific date? We’ll adjust for the month, the weekday and the forecast.
EYW → MIA
Key West to Miami: 1,246 nonstop flights a year
On time (12 months)
80%
Cancelled
0.6%
avg delay 15 min
Best time to leave
Before 9 AM
96% on time vs 69% 3 to 6 PM
Most reliable airline
Envoy
81% chance on time
Lowest nonstop fare seen in the next two months: $325 (American 3579 on 2026-10-23). Fares open on our travel partner (Aviasales). Pick the flight number you chose here.
Most reliable nonstop flights
Ranked by the chance the flight operates and arrives within 15 minutes of schedule, from Jun 2025 to May 2026 records.
#1 · Envoy 4044 · sold as American Eagle
6:45 AM → 7:35 AM50m nonstop
Local times, typical schedule. Last flown 2026-05-20.
88%
chance on time
- On time (history)
- 89%
- Cancelled
- 0.0%
- Avg arrival delay
- 11 min
- Arrived on time 89% of the time (282 flights, Jun 2025 to May 2026).
- Never cancelled in 282 scheduled flights.
- Leaves in this route's most on-time window (Before 9 AM: 96% on time; 3 to 6 PM: 69%).
Strong track record · 282 flights
Find 6:45 AM flight fares Opens this date on Aviasales#2 · Envoy 3515 · sold as American Eagle
11:28 AM → 12:20 PM52m nonstop
Local times, typical schedule. Last flown 2026-05-31. Same departure also flew as Envoy 3580; its record covers all of them.
86%
chance on time
- On time (history)
- 89%
- Cancelled
- 0.0%
- Avg arrival delay
- 6 min
- Arrived on time 89% of the time (47 flights, Jun 2025 to May 2026).
- Never cancelled in 47 scheduled flights.
Limited track record · 47 flights
Find 11:28 AM flight fares Opens this date on Aviasales#3 · Envoy 3517 · sold as American Eagle
7:40 PM → 8:30 PM50m nonstop
Local times, typical schedule. Last flown 2026-05-31.
85%
chance on time
- On time (history)
- 91%
- Cancelled
- 0.0%
- Avg arrival delay
- 11 min
- Arrived on time 91% of the time (11 flights, Jun 2025 to May 2026).
- 70% of its delay minutes came from the plane arriving late from an earlier flight.
Limited track record · 11 flights
Find 7:40 PM flight fares Opens this date on Aviasales#4 · Envoy 3577 · sold as American Eagle
3:58 PM → 4:50 PM52m nonstop
Local times, typical schedule. Last flown 2026-05-20.
77%
chance on time
- On time (history)
- 79%
- Cancelled
- 0.0%
- Avg arrival delay
- 19 min
- Arrived on time 79% of the time (168 flights, Jun 2025 to May 2026).
- Never cancelled in 168 scheduled flights.
- Leaves in this route's least on-time window (3 to 6 PM: 69% on time; Before 9 AM: 96%).
- Lands inside MIA's trouble window: 49% of its 45 ground stops and delay programs started between 1 PM and 7 PM.
Moderate track record · 168 flights
Find 3:58 PM flight fares Opens this date on Aviasales#5 · Envoy 3518 · sold as American Eagle
1:39 PM → 2:30 PM51m nonstop
Local times, typical schedule. Last flown 2026-05-31.
76%
chance on time
- On time (history)
- 89%
- Cancelled
- 0.0%
- Avg arrival delay
- 7 min
- Arrived on time 89% of the time (9 flights, Jun 2025 to May 2026).
- Lands inside MIA's trouble window: 49% of its 45 ground stops and delay programs started between 1 PM and 7 PM.
Limited track record · 9 flights
Find 1:39 PM flight fares Opens this date on Aviasales
Airlines on this route
Season-adjusted chance of operating and arriving on time.
- Envoy Air (sold as American Eagle)81%
1,160 flights · 81% on time as flown · 0.6% cancel
On time by departure time
All airlines, scheduled local departure, Jun 2025 to May 2026.
- Before 9 AM96%
107 flights · avg delay 9 min
- 9 AM to noon87%
231 flights · avg delay 12 min
- Noon to 3 PM75%
354 flights · avg delay 18 min
- 3 to 6 PM69%
238 flights · avg delay 21 min
- 6 to 9 PM84%
316 flights · avg delay 13 min
Best day: Wednesday (87%). Worst: Saturday (73%).
On time by month
All airlines, Jun 2023 to May 2026. Several years per month, so one stormy season doesn't define a month. Travel-month estimates use this seasonal pattern.
What delays this route
- Late-arriving aircraft58%
- Airline (crew, maintenance, boarding)21%
- Air traffic control and airport volume11%
- Severe weather10%
Share of delay minutes by the cause airlines report to the US DOT.
Historical odds, not a guarantee. Built from the US DOT Bureau of Transportation Statistics on-time reports (Jun 2025 to May 2026), FAA ground stop and delay program advisories, and 20 years of airport weather observations. Covers 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. Fares are what Aviasales travelers saw in recent searches (USD, one way, 1 adult), not live quotes; the partner site shows the current price. Fare links go to our travel partner and may earn us a commission at no cost to you. Affiliate disclosure
EYW to MIA questions
- What time of day is best to fly EYW to MIA?
- Before 9 AM: 96% of flights arrived on time, against 69% for departures 3 to 6 PM. Later flights inherit delays from earlier ones, so the first departures of the day usually run best.
- Which airline is most on time from EYW to MIA?
- Envoy, with a season-adjusted 81% chance of operating and arriving on time over 1,160 flights. The adjustment compares each airline with what the route did in the months it flew, so a carrier that skipped a stormy month gets no free credit.
- What is the worst month for delays on EYW to MIA?
- March (69% on time); the best was October (91%), averaged over Jun 2023 to May 2026.
- Is this a prediction for my flight?
- No. These are historical odds from the US DOT on-time reports, FAA advisories and airport weather records. Check your flight status and the FAA delay board on the day you fly.
More routes from EYW
- MIA to EYW (return)
- EYW to ATL 86%
- EYW to CLT 82%
- EYW to ORD 67%
- EYW to DCA 76%
- EYW to PHL 68%
- EYW to EWR 70%
- EYW to LGA 71%
- EYW to DFW 69%
- EYW to PIE 83%
Live status: FAA delays and ground stops