NK981

NK981 (Spirit Airlines) is a multi-stop service on 5 routes, busiest Boise to Las Vegas. Of 255 departures recorded from October 2024 to May 2026, 76.4% 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 periods10 periods
PeriodDepartures 2025Departures 2026Change vs last year
January530▲ 500.0%
February1612▼ 25.0%
March3122▼ 29.0%
April829▲ 262.5%
May–1–
June–––
July–––
August–––
September–––
October––in progress
November–––
December25––

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 periods10 periods
PeriodOn time 2025On time 2026Change vs last year
January100.0%84.6%▼ 15.4%
February86.7%90.9%▲ 4.9%
March86.7%21.1%▼ 75.7%
April100.0%57.1%▼ 42.9%
May–0.0%–
June–––
July–––
August–––
September–––
October––in progress
November–––
December50.0%––

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 periods10 periods
PeriodCancelled 2025Cancelled 2026Change vs last year
January04–
February110.0%
March13▲ 200.0%
April01–
May–0–
June–––
July–––
August–––
September–––
October––in progress
November–––
December3––

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 94.5% 241
  • Cancelled 5.5% 14

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

On time, leg by leg

  1. BOI–LAS81 91.4%
  2. LGA–MIA72 61.5%
  3. MCO–BNA47 54.8%
  4. SJU–MCO35 91.2%

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

Legs flown under this number

4
Monthly figures
PeriodDepartures With departure delay recordedOn time Cancelled
October 2024 19 19 84.2% 0
November 2024 30 30 93.3% 0
December 2024 27 27 92.6% 0
January 2025 5 5 100.0% 0
February 2025 16 15 86.7% 1
March 2025 31 30 86.7% 1
April 2025 8 8 100.0% 0
December 2025 25 22 50.0% 3
January 2026 30 26 84.6% 4
February 2026 12 11 90.9% 1
March 2026 22 19 21.1% 3
April 2026 29 28 57.1% 1
May 2026 1 1 0.0% 0

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