NK513

NK513 (Spirit Airlines) is a multi-stop service on 5 routes, busiest Houston to Atlanta. Of 129 departures recorded from October 2024 to May 2026, 90.4% left on time, according to the US BTS.

Recorded departures by month

All legs under this number combined; see the leg table.

Months without data are left blank.

The most recent periods7 periods
PeriodDepartures 2025Departures 2026Change vs last year
January23––
February20––
March16––
April2316▼ 30.4%
May51▼ 80.0%
June–––
July–––
August–––
September–––
October––in progress
November–––
December–––

according to the US BTS · October 2024 → May 2026

On-time departures by month

All legs combined

Months without data are left blank.

On time = departure within 15 minutes of schedule. Non-cancelled flights with a recorded delay only.

The most recent periods7 periods
PeriodOn time 2025On time 2026Change vs last year
January90.0%––
February95.0%––
March93.8%––
April95.5%81.3%▼ 14.9%
May80.0%100.0%▲ 25.0%
June–––
July–––
August–––
September–––
October––in progress
November–––
December–––

according to the US BTS · October 2024 → May 2026

Average departure delay by month

All legs combined

Months without data are left blank.

according to the US BTS · October 2024 → May 2026

Cancelled departures by month

All legs combined

Months without data are left blank.

The most recent periods7 periods
PeriodCancelled 2025Cancelled 2026Change vs last year
January3––
February0––
March0––
April10▼ 100.0%
May00–
June–––
July–––
August–––
September–––
October––in progress
November–––
December–––

according to the US BTS · October 2024 → May 2026

This is not a forecast

This is a historical record of departures already flown, not a forecast for your flight.

This number flies several legs

Several legs: the headline figure averages all of them. See the leg table.

Cancellation share

  • Not cancelled 96.9% 125
  • Cancelled 3.1% 4

Share of all recorded flights in the period, all legs. · Oct 12, 2024 → May 1, 2026

On time, leg by leg

  1. IAH–ATL46 93.0%
  2. MYR–DTW41 92.5%

Departures within 15 minutes of schedule; small figure = departures recorded.

Legs flown under this number

2
Monthly figures
PeriodDepartures With departure delay recordedOn time Cancelled
October 2024 13 13 92.3% 0
November 2024 4 4 75.0% 0
December 2024 8 8 87.5% 0
January 2025 23 20 90.0% 3
February 2025 20 20 95.0% 0
March 2025 16 16 93.8% 0
April 2025 23 22 95.5% 1
May 2025 5 5 80.0% 0
April 2026 16 16 81.3% 0
May 2026 1 1 100.0% 0

How to read this chart

Loading the guide…