Route Reliability

Airport reliability

Pasco/Kennewick/Richland (PSC) on-time performance

How reliably flights leave Pasco/Kennewick/Richland, WA (PSC) and reach their destinations, by airline, departure hour and month, September 2025 to August 2026.

Historical performance Official DOT data through August 2026 · Not live flight status

Pasco/Kennewick/Richland, WA6,162 departures in 12 months

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Three-letter airport codes, nonstop U.S. domestic flights. One direction at a time.

Departures on time
86.3%
U.S. average 75.6%
Cancelled
0.5%
U.S. average 1.9%
60+ minutes late
4.9%
U.S. average 8.1%
Scheduled departures
6,162
12 months

What this means

PSC departures beat the U.S. average.

  • 86.3% of the 6,162 scheduled departures from Pasco/Kennewick/Richland (PSC) arrived at their destination on time, 10.7 points higher than the U.S. average of 75.6%.
  • 0.5% of departures were cancelled (U.S. average 1.9%), and 4.9% arrived an hour or more late.
  • Flights arriving at PSC were on time 82.4% of the time.
  • Among airlines with at least 300 departures, Delta Air Lines was the most punctual from PSC (92.4%) and Allegiant Air the least (69.8%).
  • Over the last 3 years, March was the most reliable month for departures from PSC (89.7% on time) and January the least reliable (81.3%).
  • Flights scheduled to depart before 6 am were the most punctual (92.3% on time); flights scheduled to depart 1 pm to 2 pm were the least (78.3%).

Airlines at PSC

Ranked by on-time arrival

Departures from PSC, September 2025 to August 2026. On time means arrived at the destination within 15 minutes of schedule.
AirlineOn timeCancelled 60+ min lateAvg delay when lateDepartures
Delta Air Lines 92.4%0.3% 4.9%173 min 592
United Airlines 90.1%0.8% 3.9%88 min 363
SkyWest AirlinesSold as United Express, Delta Connection, American Eagle, Alaska 86.6%0.5% 4.6%82 min 4,658
Alaska Airlines 81.6%0.9% 5.6%77 min 234
Allegiant Air 69.8%0.3% 10.5%127 min 315

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On-time rate by departure hour

<6a 92.3%
6a 88.3%
7a 82.7%
8a 86.5%
9a 92.6%
10a 86.5%
11a 91.9%
12p 86.9%
1p 78.3%
2p 82.9%
3p 82.3%
4p Insufficient sample
5p 89.6%
6p 81.7%
7p 79.1%
8p Insufficient sample
9p Insufficient sample
Share of scheduled flights on time PSC average 86.3%
Departures from PSC by scheduled local departure hour, September 2025 to August 2026. Scale starts at zero.
Show as table
PeriodOn timeFlights
Departing before 6 am 92.3% 1,160
Departing 6 am to 7 am 88.3% 907
Departing 7 am to 8 am 82.7% 527
Departing 8 am to 9 am 86.5% 193
Departing 9 am to 10 am 92.6% 68
Departing 10 am to 11 am 86.5% 141
Departing 11 am to noon 91.9% 197
Departing noon to 1 pm 86.9% 589
Departing 1 pm to 2 pm 78.3% 696
Departing 2 pm to 3 pm 82.9% 258
Departing 3 pm to 4 pm 82.3% 390
Departing 4 pm to 5 pm Insufficient sample 49
Departing 5 pm to 6 pm 89.6% 625
Departing 6 pm to 7 pm 81.7% 164
Departing 7 pm to 8 pm 79.1% 134
Departing 8 pm to 9 pm Insufficient sample 29
Departing 9 pm to 10 pm Insufficient sample 35

Best and worst months at PSC

Jan 81.3%
Feb 83.8%
Mar 89.7%
Apr 89.1%
May 87.7%
Jun 86.6%
Jul 84.3%
Aug 86.7%
Sep 88.6%
Oct 88.4%
Nov 85.5%
Dec 83.1%
Share of scheduled flights on time 12-month average 86.3%
Departures from PSC by calendar month, September 2023 to August 2026 pooled. Scale starts at zero.
Show as table
PeriodOn timeFlights
January 81.3% 1,404
February 83.8% 1,277
March 89.7% 1,393
April 89.1% 1,359
May 87.7% 1,539
June 86.6% 1,490
July 84.3% 1,544
August 86.7% 1,516
September 88.6% 1,401
October 88.4% 1,570
November 85.5% 1,467
December 83.1% 1,547

Month by month, last 12 months

Sep 91.2%
Oct 88.3%
Nov 86.5%
Dec 87.5%
Jan 84.4%
Feb 86.8%
Mar 89.5%
Apr 85.8%
May 85.3%
Jun 83.6%
Jul 81.2%
Aug 85.3%
Share of scheduled flights on time U.S. average 75.6%
Departures from PSC, September 2025 to August 2026. Scale starts at zero.
Show as table
PeriodOn timeFlights
Sep 2025 91.2% 488
Oct 2025 88.3% 566
Nov 2025 86.5% 542
Dec 2025 87.5% 567
Jan 2026 84.4% 518
Feb 2026 86.8% 476
Mar 2026 89.5% 507
Apr 2026 85.8% 466
May 2026 85.3% 497
Jun 2026 83.6% 499
Jul 2026 81.2% 505
Aug 2026 85.3% 531

Busiest routes from PSC

Nonstop routes from PSC by scheduled flights, September 2025 to August 2026.
ToOn timeCancelledAirlinesFlights
Seattle (SEA) 87.9%0.8%21,679
Salt Lake City (SLC) 93.3%0.2%21,177
Denver (DEN) 87.9%0.5%2728
Phoenix (PHX) 88.2%0.0%1694
San Francisco (SFO) 68.8%0.2%1577
Minneapolis (MSP) 91.2%0.3%2365
Los Angeles (LAX) 86.6%0.8%2359
Burbank (BUR) 81.7%1.6%1186
Phoenix (AZA) 73.7%0.0%1133
Las Vegas (LAS) 71.8%0.0%1124
Portland (PDX) 96.3%1.2%182
Santa Ana (SNA) 56.9%1.7%158
Airliner parked at a terminal gate
Photo: Depositphotos (licensed stock, illustrative only). Credits

Sources & data dates

Source
U.S. DOT Bureau of Transportation Statistics, Reporting Carrier On-Time Performance (1987-present)
Period
September 2025 to August 2026 (12 months); month-of-year patterns September 2023 to August 2026
Data through
August 2026
Processed
2026-11-03
Scope
Scheduled nonstop domestic departures from Pasco/Kennewick/Richland, WA (PSC) by airlines that report to the DOT.
Method
Rates use all scheduled flights as the denominator; cancelled and diverted flights count as not on time. Figures based on fewer than 50 scheduled flights are suppressed. Full methodology.

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