SEA → LAS

DL2949

DL2949 (Delta Air Lines) flies Seattle to Las Vegas. Of 632 departures recorded from October 2024 to July 2026, 84.9% left on time, according to the US BTS.

Recorded departures by month

The most recent periods19 periods
PeriodDepartures 2025Departures 2026Change vs last year
January30300.0%
February28280.0%
March31310.0%
April30300.0%
May3130▼ 3.2%
June30300.0%
July3130▼ 3.2%
August31––
September30––
October31–in progress
November29––
December28––
Year to date (Jan–Jul)211209▼ 0.9%

according to the US BTS · October 2024 → July 2026

On-time departures by month

All legs combined

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

The most recent periods19 periods
PeriodOn time 2025On time 2026Change vs last year
January96.7%90.0%▼ 6.9%
February78.6%75.0%▼ 4.5%
March90.3%90.0%▼ 0.4%
April90.0%83.3%▼ 7.4%
May87.1%76.7%▼ 12.0%
June86.7%86.7%0.0%
July71.0%71.4%▲ 0.6%
August90.3%––
September93.3%––
October83.9%–in progress
November86.2%––
December89.3%––
Year-to-date average (Jan–Jul)85.8%81.9%▼ 4.5%

according to the US BTS · October 2024 → July 2026

Average departure delay by month

All legs combined

according to the US BTS · October 2024 → July 2026

Cancelled departures by month

All legs combined
The most recent periods19 periods
PeriodCancelled 2025Cancelled 2026Change vs last year
January00–
February00–
March01–
April00–
May00–
June00–
July02–
August0––
September0––
October0–in progress
November0––
December0––
Year to date (Jan–Jul)03

according to the US BTS · October 2024 → July 2026

This is not a forecast

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

Cancellation share

  • Not cancelled 99.5% 629
  • Cancelled 0.5% 3

Share of all recorded flights in the period, all legs. · Oct 13, 2024 → Jul 31, 2026

Legs flown under this number

1
RoutesDistance (km)Avg delay On timeDepartures
SEA LAS Seattle–Tacoma International Airport – Harry Reid International Airport 1,395 4.9 min 84.9% 632
Monthly figures
PeriodDepartures With departure delay recordedOn time Cancelled
October 2024 12 12 91.7% 0
November 2024 23 23 69.6% 0
December 2024 28 28 89.3% 0
January 2025 30 30 96.7% 0
February 2025 28 28 78.6% 0
March 2025 31 31 90.3% 0
April 2025 30 30 90.0% 0
May 2025 31 31 87.1% 0
June 2025 30 30 86.7% 0
July 2025 31 31 71.0% 0
August 2025 31 31 90.3% 0
September 2025 30 30 93.3% 0
October 2025 31 31 83.9% 0
November 2025 29 29 86.2% 0
December 2025 28 28 89.3% 0
January 2026 30 30 90.0% 0
February 2026 28 28 75.0% 0
March 2026 31 30 90.0% 1
April 2026 30 30 83.3% 0
May 2026 30 30 76.7% 0
June 2026 30 30 86.7% 0
July 2026 30 28 71.4% 2

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