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Route · ATL → SAN · 2020–2025 BTS data

Atlanta to San Diego

According to PlainFlights' route traffic ranking (BTS On-Time Performance total flights), ATL to SAN (Atlanta to San Diego) ranks #932 of 4927 tracked domestic routes by total flights (most flights = #1).

Data updated 2026-06-13

79.3%
On-time
+0.3 pts
vs US avg
57 min
Delay when late
11,761
Flights
#932 of 4927
Corpus placement

Cancelled

0.8%

Best Month

Mar 2024 90%

Worst Month

Jul 2024 61%

Distance

1,892 mi

Carriers

10

Monthly Performance

Recent 24 months of route data.

Period Flights Delayed Cancelled Diverted Carriers
Dec 2025 215 54 2 3 DL,AS
Nov 2025 218 38 3 1 DL,AS
Oct 2025 233 49 0 4 AS,DL
Sep 2025 217 46 0 4 DL,AS
Aug 2025 229 47 0 1 AS,DL
Jul 2025 230 65 2 1 AS,DL
Jun 2025 226 81 2 0 AS,DL
May 2025 228 69 1 0 AS,DL
Apr 2025 196 57 1 0 DL,AS
Mar 2025 196 58 0 1 AS,DL
Feb 2025 151 38 0 0 AS,DL
Jan 2025 172 47 5 3 AS,WN,DL
Dec 2024 208 59 4 7 AS,DL,WN
Nov 2024 221 53 0 0 WN,AS,DL
Oct 2024 231 50 2 4 AS,DL
Sep 2024 216 46 1 0 AS,DL
Aug 2024 230 44 4 1 AS,DL,WN
Jul 2024 240 93 14 1 AS,DL,WN
Jun 2024 242 50 0 1 AS,DL,NK,WN
May 2024 213 81 0 0 AS,DL,WN
Apr 2024 171 34 0 0 DL,WN
Mar 2024 171 17 0 1 DL,WN
Feb 2024 142 16 0 3 DL
Jan 2024 143 17 0 0 DL,F9,WN

ATL–SAN seasonal on-time pattern

Best: September (85.3%) · weakest: June (73.5%)

70%75%80%85%90% JanFebMarAprMayJunJulAugSepOctNovDec 80.2%

Strongest calendar month

September

85.3% on-time · ~179 flights/mo

Busiest calendar month

July

~189 flights/mo avg

Weakest calendar month

June

73.5% on-time · ~161 flights/mo

Cancellation Rate

0.8%

41 of 4,939 flights

Diversion Rate

0.7%

36 of 4,939 flights

Explore origin & destination

On-time and delay data for the airports this route connects.

ATL - Atlanta

Full on-time, delay-cause, and seasonal performance for Atlanta, GA.

ATL on-time profile

SAN - San Diego

Full on-time, delay-cause, and seasonal performance for San Diego, CA.

SAN on-time profile

Compare the two airports

See ATL and SAN side by side on delays, cancellations, and reliability.

Compare ATL vs SAN

Origin-hub reliability standing

Mid-pack among ATL departures

From ATL, this corridor sits with 75 other 75–85% on-time routes out of 144 tracked departures, not the hub's reliability leaders (67 at ≥85%) and not the softest ( 2 below 75%). Destination: San Diego · fleet on-time rank #3393 of 4927.

What the Data Says About ATL to SAN

11,761 tracked flights put the ATL to SAN pairing (Atlanta to San Diego) at a 79.3% on-time rate, squarely in line with the wider network. Delays that do occur run 57.2 minutes on average. Across the 1,892-mile route and its 10 carriers, the trailing 24 months show 0.8% cancelled and 0.7% diverted (4,939 flights sampled).

The monthly split is wide on this route: Mar 2024 posted the strongest performance at 90% on-time, while Jul 2024 came in at just 61% - a 29-point swing worth factoring into travel timing.

On the multi-year calendar, ATL–SAN peaks in September at 85.3% on-time while July carries the heaviest traffic (~189 flights per month) ; the softest month is June at 73.5%, a 11.8-point swing that repeats because the corridor's weather and holiday mix stays stable year to year.

Frequently Asked Questions

Where does ATL to SAN rank among US routes by traffic? ▼
According to PlainFlights' route traffic ranking, ATL to SAN ranks #932 of 4927 tracked domestic routes by total flights (most flights = #1). That ordinal matches our busiest-routes listing (total_flights DESC). See /methodology#corpus-placement for the exact sort basis.
How often are flights delayed from ATL to SAN? ▼
Flights from Atlanta to San Diego have a 79.3% on-time rate based on 11,761 flights. The average delay is 57.2 minutes. The best recent month was Mar 2024 with 90% on-time.
What is the cancellation rate for ATL to SAN? ▼
Over the last 24 months, 0.8% of flights on this route were cancelled (41 of 4,939 flights) and 0.7% were diverted.
How far is the flight from ATL to SAN? ▼
The flight distance from Atlanta (ATL) to San Diego (SAN) is approximately 1,892 miles. This route is served by 10 carriers.
When is the best time to fly from ATL to SAN? ▼
The best recent month for on-time performance was Mar 2024 (90% on-time). The worst was Jul 2024 (61% on-time). Consider booking during months with historically better performance.

Airports on this route

ATL Airport

Atlanta
SAN Airport

San Diego
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 ATL–SAN data

ATL–SAN is mid-pack at 79.3% on-time; month and carrier mix move more than the corridor headline.

  • Compare ATL and SAN airport profiles: delay causes and top routes differ even on the same corridor. ATL airport
  • If your dates flex, September (85.3% on-time) beats June (73.5%) on this corridor. Seasonal chart
  • 4 other routes post a similar 79.3% 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.

Data sourced from U.S. Department of Transportation Bureau of Transportation Statistics (BTS) On-Time Performance data. See our methodology for details. Retrieved and formatted by PlainFlights

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.