Route · HOU → SAN · 2020–2025 BTS data
Houston to San Diego
According to PlainFlights' route traffic ranking (BTS On-Time Performance total flights), HOU to SAN (Houston to San Diego) ranks #2580 of 4927 tracked domestic routes by total flights (most flights = #1).
Data updated 2026-06-13
- 82%
- On-time
- +3 pts
- vs US avg
- 53 min
- Delay when late
- 4,704
- Flights
- #2580 of 4927
- Corpus placement
Cancelled
0.8%
Best Month
Aug 2025 94%
Worst Month
Jun 2025 61%
Distance
1,313 mi
Carriers
1
Monthly Performance
Recent 24 months of route data.
| Period | Flights | Delayed | Cancelled | Diverted | Carriers |
|---|---|---|---|---|---|
| Dec 2025 | 91 | 22 | 0 | 0 | WN |
| Nov 2025 | 86 | 15 | 4 | 1 | WN |
| Oct 2025 | 87 | 19 | 1 | 0 | WN |
| Sep 2025 | 60 | 10 | 1 | 0 | WN |
| Aug 2025 | 65 | 4 | 0 | 0 | WN |
| Jul 2025 | 88 | 31 | 0 | 0 | WN |
| Jun 2025 | 83 | 32 | 0 | 0 | WN |
| May 2025 | 70 | 20 | 0 | 0 | WN |
| Apr 2025 | 70 | 14 | 0 | 0 | WN |
| Mar 2025 | 76 | 15 | 0 | 0 | WN |
| Feb 2025 | 56 | 9 | 0 | 0 | WN |
| Jan 2025 | 65 | 8 | 3 | 1 | WN |
| Dec 2024 | 72 | 22 | 1 | 4 | WN |
| Nov 2024 | 64 | 7 | 0 | 0 | WN |
| Oct 2024 | 74 | 14 | 0 | 1 | WN |
| Sep 2024 | 60 | 6 | 0 | 0 | WN |
| Aug 2024 | 66 | 8 | 0 | 0 | WN |
| Jul 2024 | 91 | 32 | 3 | 1 | WN |
| Jun 2024 | 86 | 24 | 0 | 0 | WN |
| May 2024 | 57 | 20 | 1 | 0 | WN |
| Apr 2024 | 63 | 15 | 0 | 0 | WN |
| Mar 2024 | 77 | 13 | 0 | 0 | WN |
| Feb 2024 | 45 | 7 | 0 | 1 | WN |
| Jan 2024 | 54 | 12 | 0 | 1 | WN |
HOU–SAN seasonal on-time pattern
Best: September (88.9%) · weakest: June (72.3%)
Strongest calendar month
September
88.9% on-time · ~61 flights/mo
Busiest calendar month
July
~78 flights/mo avg
Weakest calendar month
June
72.3% on-time · ~67 flights/mo
Cancellation Rate
0.8%
14 of 1,706 flights
Diversion Rate
0.6%
10 of 1,706 flights
Explore origin & destination
On-time and delay data for the airports this route connects.
HOU - Houston
Full on-time, delay-cause, and seasonal performance for Houston, TX.
HOU on-time profileSAN - San Diego
Full on-time, delay-cause, and seasonal performance for San Diego, CA.
SAN on-time profileCompare the two airports
See HOU and SAN side by side on delays, cancellations, and reliability.
Compare HOU vs SANOrigin-hub reliability standing
Mid-pack among HOU departures
From HOU, this corridor sits with 43 other 75–85% on-time routes out of 50 tracked departures, not the hub's reliability leaders (1 at ≥85%) and not the softest ( 6 below 75%). Destination: San Diego · fleet on-time rank #2347 of 4927.
Similar routes
Other BTS-tracked routes with comparable performance or trip length to HOU–SAN.
Routes with a similar on-time rate
What the Data Says About HOU to SAN
Bureau of Transportation Statistics records show Houston to San Diego (HOU to SAN) running a 82% on-time rate over 4,704 tracked flights, on the stronger end of a typical domestic pairing. When flights do run late, the average delay is 53.3 minutes. The 1,313-mile corridor is served by 1 carrier, and over the last 24 months 0.8% of 1,706 flights were cancelled, 0.6% diverted.
The monthly split is wide on this route: Aug 2025 posted the strongest performance at 94% on-time, while Jun 2025 came in at just 61% - a 32-point swing worth factoring into travel timing.
On the multi-year calendar, HOU–SAN peaks in September at 88.9% on-time while July carries the heaviest traffic (~78 flights per month) ; the softest month is June at 72.3%, a 16.6-point swing that repeats because the corridor's weather and holiday mix stays stable year to year.
Frequently Asked Questions
Where does HOU to SAN rank among US routes by traffic? ▼
How often are flights delayed from HOU to SAN? ▼
What is the cancellation rate for HOU to SAN? ▼
How far is the flight from HOU to SAN? ▼
When is the best time to fly from HOU to SAN? ▼
Airports on this route
Data source
Data Source: Bureau of Transportation Statistics (BTS), On-Time Performance Data. Statistics reflect cumulative performance across all available reporting periods.
Read our methodology - how this data is sourced, computed, and verified.
Using HOU–SAN data
HOU–SAN runs 3 pts above the national 79% average; the remaining risk is month-to-month swing and carrier mix, not a weak headline rate.
- Compare HOU and SAN airport profiles: delay causes and top routes differ even on the same corridor. HOU airport
- If your dates flex, September (88.9% on-time) beats June (72.3%) on this corridor. Seasonal chart
- 4 other routes post a similar 82% on-time rate; compare before you commit to this pairing. Similar routes
On-time rate reflects the BTS historical average across all reporting carriers on this origin–destination pair, not any single flight or booking recommendation.
Every figure on PlainFlights is rendered directly from BTS On-Time Performance data, no number is typed in by an editor. This page aggregates this specific route's on-time performance and monthly trend, live from the dataset. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.