WN1935

WN1935 (Southwest Airlines) is a multi-stop service on 29 routes, busiest Denver to Des Moines. Of 727 departures recorded from October 2024 to July 2026, 80.5% left on time, according to the US BTS.

Recorded departures by month

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

The most recent periods19 periods
PeriodDepartures 2025Departures 2026Change vs last year
January3438▲ 11.8%
February3537▲ 5.7%
March32320.0%
April3930▼ 23.1%
May4531▼ 31.1%
June3130▼ 3.2%
July3130▼ 3.2%
August46––
September47––
October48–in progress
November30––
December31––
Year to date (Jan–Jul)247228▼ 7.7%

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
January88.2%72.2%▼ 18.2%
February85.7%78.4%▼ 8.6%
March64.5%56.3%▼ 12.8%
April89.7%76.7%▼ 14.6%
May91.1%87.1%▼ 4.4%
June74.2%90.0%▲ 21.3%
July51.6%100.0%▲ 93.8%
August84.4%––
September85.1%––
October68.8%–in progress
November90.0%––
December80.7%––
Year-to-date average (Jan–Jul)77.9%80.1%▲ 2.8%

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
January02–
February00–
March10▼ 100.0%
April00–
May00–
June00–
July00–
August1––
September0––
October0–in progress
November0––
December0––
Year to date (Jan–Jul)12▲ 100.0%

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.

This number flies several legs

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

Cancellation share

  • Not cancelled 99.3% 722
  • Cancelled 0.7% 5

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

On time, leg by leg

  1. DEN–DSM61 62.3%
  2. OAK–AUS58 96.6%
  3. BWI–SJU58 84.5%
  4. SDF–MDW57 83.9%
  5. PIT–BNA57 94.7%
  6. BWI–SDF55 70.9%
  7. PHX–LAS54 71.2%
  8. DJT–BWI50 80.0%

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

Legs flown under this number

12
12 of 12
RoutesDistance (km)Avg delay On timeDepartures
DEN DSM Denver International Airport – Des Moines International Airport 947 33.2 min 62.3% 61
OAK AUS Oakland San Francisco Bay Airport – Austin Bergstrom International Airport 2,406 1.6 min 96.6% 58
BWI SJU Baltimore/Washington International Thurgood Marshall Airport – Luis Munoz Marin International Airport 2,525 7.9 min 84.5% 58
SDF MDW Louisville Muhammad Ali International Airport – Chicago Midway International Airport 437 6.7 min 83.9% 57
PIT BNA Pittsburgh International Airport – Nashville International Airport 743 1.4 min 94.7% 57
BWI SDF Baltimore/Washington International Thurgood Marshall Airport – Louisville Muhammad Ali International Airport 795 11.2 min 70.9% 55
PHX LAS Phoenix Sky Harbor International Airport – Harry Reid International Airport 411 13.0 min 71.2% 54
DJT BWI President Donald J. Trump International Airport – Baltimore/Washington International Thurgood Marshall Airport 1,425 8.1 min 80.0% 50
BWI TPA Baltimore/Washington International Thurgood Marshall Airport – Tampa International Airport 1,358 7.6 min 84.8% 46
COS PHX City of Colorado Springs Municipal Airport – Phoenix Sky Harbor International Airport 887 3.6 min 88.6% 36
DEN PHX Denver International Airport – Phoenix Sky Harbor International Airport 968 30.5 min 54.6% 33
BWI MIA Baltimore/Washington International Thurgood Marshall Airport – Miami International Airport 1,526 17.6 min 65.6% 33
Monthly figures
PeriodDepartures With departure delay recordedOn time Cancelled
October 2024 16 16 81.3% 0
November 2024 18 17 100.0% 1
December 2024 16 16 81.3% 0
January 2025 34 34 88.2% 0
February 2025 35 35 85.7% 0
March 2025 32 31 64.5% 1
April 2025 39 39 89.7% 0
May 2025 45 45 91.1% 0
June 2025 31 31 74.2% 0
July 2025 31 31 51.6% 0
August 2025 46 45 84.4% 1
September 2025 47 47 85.1% 0
October 2025 48 48 68.8% 0
November 2025 30 30 90.0% 0
December 2025 31 31 80.7% 0
January 2026 38 36 72.2% 2
February 2026 37 37 78.4% 0
March 2026 32 32 56.3% 0
April 2026 30 30 76.7% 0
May 2026 31 31 87.1% 0
June 2026 30 30 90.0% 0
July 2026 30 30 100.0% 0

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