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2,812 km · Domestic

Nashville (BNA) – San Diego (SAN)

In July 2026, 216 flights operated between Nashville and San Diego (both directions), and 56.9% left on time, according to the US BTS.

Official · July 2026 according to the US BTS only airlines required to report on-time data to the US DOT

Flights per month

Only complete months are shown. A month appears once the source has published every day of it.

The most recent periods19 periods
PeriodFlights operated 2025Flights operated 2026Change vs last year
January133136▲ 2.3%
February115141▲ 22.6%
March139205▲ 47.5%
April139199▲ 43.2%
May145200▲ 37.9%
June165206▲ 24.8%
July176216▲ 22.7%
August157––
September154––
October176–in progress
November168––
December181––
Year to date (Jan–Jul)1,0121,303▲ 28.8%

On-time departures by month

Departures within 15 minutes of schedule.

The most recent periods19 periods
PeriodOn-time departures 2025On-time departures 2026Change vs last year
January81.2%79.4%▼ 2.2%
February82.6%77.3%▼ 6.4%
March80.6%68.3%▼ 15.3%
April79.9%68.8%▼ 13.9%
May74.5%61.5%▼ 17.4%
June67.3%53.4%▼ 20.7%
July66.5%56.9%▼ 14.4%
August76.4%––
September81.2%––
October68.8%–in progress
November73.8%––
December73.5%––
Year-to-date average (Jan–Jul)76.1%66.5%▼ 12.6%

Cancelled flights by month

The most recent periods19 periods
PeriodCancelled flights 2025Cancelled flights 2026Change vs last year
January28▲ 300.0%
February01–
March21▼ 50.0%
April01–
May12▲ 100.0%
June12▲ 100.0%
July00–
August0––
September0––
October0–in progress
November2––
December1––
Year to date (Jan–Jul)615▲ 150.0%

By direction

BNA → SAN

Scheduled flights
1,807
Flights operated
1,795
Cancelled
12 · 0.7%
On-time departures
70.9%

SAN → BNA

Scheduled flights
1,822
Flights operated
1,807
Cancelled
15 · 0.8%
On-time departures
72.9%

BNA → SAN and SAN → BNA counted separately.

Airlines on this route

Oct 1, 2024 – Jul 31, 2026
AirlineScheduled flights Share On-time departures Cancelled
Southwest Airlines WN 3,629 100.0% 71.9% 27

Shares are of scheduled flights in the period shown. Codeshare flights are counted once, under the operating airline.

Flight timing & delays

Historical departures, grouped by the scheduled local time at the departure airport. These are recorded outcomes, not a forecast for your flight.

Times are local to the departure airport of each flight; both directions are combined.

US domestic sectors recorded by BTS

Source: the US BTS · Oct 12, 2024 → Jul 31, 2026

Lowest average delay07:00–08:002.5min · 238 recorded · 236 measured
Gap to highest-delay hour22.3min07:00 ↔ 13:00
Recorded flights3,629BNA–SAN

Departure hour

On-time departures Partial coverage: only airlines that report on-time data to the US DOT
00:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 01:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 02:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 03:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 04:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 05:00 · Fewer than 200 measured departures · 2 recorded · 2 measured · Source: the US BTS 06:00 · 94.2% · 711 recorded · 708 measured · Source: the US BTS 07:00 · 93.6% · 238 recorded · 236 measured · Source: the US BTS 08:00 · 91.5% · 295 recorded · 293 measured · Source: the US BTS 09:00 · Fewer than 200 measured departures · 45 recorded · 45 measured · Source: the US BTS 10:00 · Fewer than 200 measured departures · 142 recorded · 140 measured · Source: the US BTS 11:00 · Fewer than 200 measured departures · 132 recorded · 132 measured · Source: the US BTS 12:00 · 54.5% · 257 recorded · 257 measured · Source: the US BTS 13:00 · 55.4% · 344 recorded · 343 measured · Source: the US BTS 14:00 · Fewer than 200 measured departures · 174 recorded · 172 measured · Source: the US BTS 15:00 · Fewer than 200 measured departures · 84 recorded · 83 measured · Source: the US BTS 16:00 · Fewer than 200 measured departures · 136 recorded · 135 measured · Source: the US BTS 17:00 · Fewer than 200 measured departures · 186 recorded · 184 measured · Source: the US BTS 18:00 · 59.9% · 244 recorded · 242 measured · Source: the US BTS 19:00 · Fewer than 200 measured departures · 156 recorded · 153 measured · Source: the US BTS 20:00 · 58.8% · 305 recorded · 303 measured · Source: the US BTS 21:00 · Fewer than 200 measured departures · 29 recorded · 29 measured · Source: the US BTS 22:00 · Fewer than 200 measured departures · 149 recorded · 145 measured · Source: the US BTS 23:00 · No observations · 0 recorded · 0 measured · Source: the US BTS

Hover, tap or focus a point to see its value, sample and source.

Average departure delay Partial coverage: only airlines that report on-time data to the US DOT
00:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 01:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 02:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 03:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 04:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 05:00 · Fewer than 200 measured departures · 2 recorded · 2 measured · Source: the US BTS 06:00 · 2.7 min · 711 recorded · 708 measured · Source: the US BTS 07:00 · 2.5 min · 238 recorded · 236 measured · Source: the US BTS 08:00 · 4.0 min · 295 recorded · 293 measured · Source: the US BTS 09:00 · Fewer than 200 measured departures · 45 recorded · 45 measured · Source: the US BTS 10:00 · Fewer than 200 measured departures · 142 recorded · 140 measured · Source: the US BTS 11:00 · Fewer than 200 measured departures · 132 recorded · 132 measured · Source: the US BTS 12:00 · 20.6 min · 257 recorded · 257 measured · Source: the US BTS 13:00 · 24.8 min · 344 recorded · 343 measured · Source: the US BTS 14:00 · Fewer than 200 measured departures · 174 recorded · 172 measured · Source: the US BTS 15:00 · Fewer than 200 measured departures · 84 recorded · 83 measured · Source: the US BTS 16:00 · Fewer than 200 measured departures · 136 recorded · 135 measured · Source: the US BTS 17:00 · Fewer than 200 measured departures · 186 recorded · 184 measured · Source: the US BTS 18:00 · 20.7 min · 244 recorded · 242 measured · Source: the US BTS 19:00 · Fewer than 200 measured departures · 156 recorded · 153 measured · Source: the US BTS 20:00 · 18.7 min · 305 recorded · 303 measured · Source: the US BTS 21:00 · Fewer than 200 measured departures · 29 recorded · 29 measured · Source: the US BTS 22:00 · Fewer than 200 measured departures · 149 recorded · 145 measured · Source: the US BTS 23:00 · No observations · 0 recorded · 0 measured · Source: the US BTS

Hover, tap or focus a point to see its value, sample and source.

Recorded flights Partial coverage: only airlines that report on-time data to the US DOT
00:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 01:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 02:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 03:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 04:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 05:00 · 2 · 2 recorded · 2 measured · Source: the US BTS 06:00 · 711 · 711 recorded · 708 measured · Source: the US BTS 07:00 · 238 · 238 recorded · 236 measured · Source: the US BTS 08:00 · 295 · 295 recorded · 293 measured · Source: the US BTS 09:00 · 45 · 45 recorded · 45 measured · Source: the US BTS 10:00 · 142 · 142 recorded · 140 measured · Source: the US BTS 11:00 · 132 · 132 recorded · 132 measured · Source: the US BTS 12:00 · 257 · 257 recorded · 257 measured · Source: the US BTS 13:00 · 344 · 344 recorded · 343 measured · Source: the US BTS 14:00 · 174 · 174 recorded · 172 measured · Source: the US BTS 15:00 · 84 · 84 recorded · 83 measured · Source: the US BTS 16:00 · 136 · 136 recorded · 135 measured · Source: the US BTS 17:00 · 186 · 186 recorded · 184 measured · Source: the US BTS 18:00 · 244 · 244 recorded · 242 measured · Source: the US BTS 19:00 · 156 · 156 recorded · 153 measured · Source: the US BTS 20:00 · 305 · 305 recorded · 303 measured · Source: the US BTS 21:00 · 29 · 29 recorded · 29 measured · Source: the US BTS 22:00 · 149 · 149 recorded · 145 measured · Source: the US BTS 23:00 · No observations · 0 recorded · 0 measured · Source: the US BTS

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View the figures
Departure hourOn-time departuresAverage departure delayWith departure timeRecorded flights
00:00No observations———
01:00No observations———
02:00No observations———
03:00No observations———
04:00No observations———
05:00Fewer than 200 measured departures—22
06:0094.2%2.7 min708711
07:0093.6%2.5 min236238
08:0091.5%4.0 min293295
09:00Fewer than 200 measured departures—4545
10:00Fewer than 200 measured departures—140142
11:00Fewer than 200 measured departures—132132
12:0054.5%20.6 min257257
13:0055.4%24.8 min343344
14:00Fewer than 200 measured departures—172174
15:00Fewer than 200 measured departures—8384
16:00Fewer than 200 measured departures—135136
17:00Fewer than 200 measured departures—184186
18:0059.9%20.7 min242244
19:00Fewer than 200 measured departures—153156
20:0058.8%18.7 min303305
21:00Fewer than 200 measured departures—2929
22:00Fewer than 200 measured departures—145149
23:00No observations———

Day of week

On-time departures Partial coverage: only airlines that report on-time data to the US DOT
Monday · 68.3% · 562 recorded · 558 measured · Source: the US BTS Tuesday · 79.2% · 501 recorded · 500 measured · Source: the US BTS Wednesday · 79.9% · 499 recorded · 498 measured · Source: the US BTS Thursday · 64.6% · 554 recorded · 553 measured · Source: the US BTS Friday · 67.4% · 559 recorded · 552 measured · Source: the US BTS Saturday · 77.0% · 429 recorded · 426 measured · Source: the US BTS Sunday · 69.3% · 525 recorded · 515 measured · Source: the US BTS

Hover, tap or focus a point to see its value, sample and source.

Average departure delay Partial coverage: only airlines that report on-time data to the US DOT
Monday · 15.9 min · 562 recorded · 558 measured · Source: the US BTS Tuesday · 9.1 min · 501 recorded · 500 measured · Source: the US BTS Wednesday · 9.4 min · 499 recorded · 498 measured · Source: the US BTS Thursday · 17.5 min · 554 recorded · 553 measured · Source: the US BTS Friday · 18.9 min · 559 recorded · 552 measured · Source: the US BTS Saturday · 11.6 min · 429 recorded · 426 measured · Source: the US BTS Sunday · 15.8 min · 525 recorded · 515 measured · Source: the US BTS

Hover, tap or focus a point to see its value, sample and source.

Recorded flights Partial coverage: only airlines that report on-time data to the US DOT
Monday · 562 · 562 recorded · 558 measured · Source: the US BTS Tuesday · 501 · 501 recorded · 500 measured · Source: the US BTS Wednesday · 499 · 499 recorded · 498 measured · Source: the US BTS Thursday · 554 · 554 recorded · 553 measured · Source: the US BTS Friday · 559 · 559 recorded · 552 measured · Source: the US BTS Saturday · 429 · 429 recorded · 426 measured · Source: the US BTS Sunday · 525 · 525 recorded · 515 measured · Source: the US BTS

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View the figures
Day of weekOn-time departuresAverage departure delayWith departure timeRecorded flights
Monday68.3%15.9 min558562
Tuesday79.2%9.1 min500501
Wednesday79.9%9.4 min498499
Thursday64.6%17.5 min553554
Friday67.4%18.9 min552559
Saturday77.0%11.6 min426429
Sunday69.3%15.8 min515525

Month of year

Months combine the same calendar month across the years shown; this is a seasonal pattern, not a monthly time series.

On-time departures Partial coverage: only airlines that report on-time data to the US DOT
Jan · 80.3% · 279 recorded · 269 measured · Source: the US BTS Feb · 79.7% · 257 recorded · 256 measured · Source: the US BTS Mar · 73.3% · 347 recorded · 344 measured · Source: the US BTS Apr · 73.4% · 339 recorded · 338 measured · Source: the US BTS May · 67.0% · 348 recorded · 345 measured · Source: the US BTS Jun · 59.6% · 374 recorded · 371 measured · Source: the US BTS Jul · 61.2% · 392 recorded · 392 measured · Source: the US BTS Aug · Fewer than 200 measured departures · 157 recorded · 157 measured · Source: the US BTS Sep · Fewer than 200 measured departures · 154 recorded · 154 measured · Source: the US BTS Oct · 75.9% · 290 recorded · 290 measured · Source: the US BTS Nov · 76.8% · 334 recorded · 332 measured · Source: the US BTS Dec · 72.6% · 358 recorded · 354 measured · Source: the US BTS

Hover, tap or focus a point to see its value, sample and source.

Average departure delay Partial coverage: only airlines that report on-time data to the US DOT
Jan · 8.8 min · 279 recorded · 269 measured · Source: the US BTS Feb · 9.4 min · 257 recorded · 256 measured · Source: the US BTS Mar · 14.2 min · 347 recorded · 344 measured · Source: the US BTS Apr · 12.0 min · 339 recorded · 338 measured · Source: the US BTS May · 15.7 min · 348 recorded · 345 measured · Source: the US BTS Jun · 19.3 min · 374 recorded · 371 measured · Source: the US BTS Jul · 19.1 min · 392 recorded · 392 measured · Source: the US BTS Aug · Fewer than 200 measured departures · 157 recorded · 157 measured · Source: the US BTS Sep · Fewer than 200 measured departures · 154 recorded · 154 measured · Source: the US BTS Oct · 13.5 min · 290 recorded · 290 measured · Source: the US BTS Nov · 11.7 min · 334 recorded · 332 measured · Source: the US BTS Dec · 19.1 min · 358 recorded · 354 measured · Source: the US BTS

Hover, tap or focus a point to see its value, sample and source.

Recorded flights Partial coverage: only airlines that report on-time data to the US DOT
Jan · 279 · 279 recorded · 269 measured · Source: the US BTS Feb · 257 · 257 recorded · 256 measured · Source: the US BTS Mar · 347 · 347 recorded · 344 measured · Source: the US BTS Apr · 339 · 339 recorded · 338 measured · Source: the US BTS May · 348 · 348 recorded · 345 measured · Source: the US BTS Jun · 374 · 374 recorded · 371 measured · Source: the US BTS Jul · 392 · 392 recorded · 392 measured · Source: the US BTS Aug · 157 · 157 recorded · 157 measured · Source: the US BTS Sep · 154 · 154 recorded · 154 measured · Source: the US BTS Oct · 290 · 290 recorded · 290 measured · Source: the US BTS Nov · 334 · 334 recorded · 332 measured · Source: the US BTS Dec · 358 · 358 recorded · 354 measured · Source: the US BTS

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View the figures
Month of yearOn-time departuresAverage departure delayWith departure timeRecorded flights
Jan80.3%8.8 min269279
Feb79.7%9.4 min256257
Mar73.3%14.2 min344347
Apr73.4%12.0 min338339
May67.0%15.7 min345348
Jun59.6%19.3 min371374
Jul61.2%19.1 min392392
AugFewer than 200 measured departures—157157
SepFewer than 200 measured departures—154154
Oct75.9%13.5 min290290
Nov76.8%11.7 min332334
Dec72.6%19.1 min354358

Delay and on-time rates need at least 200 measured departures per bucket. Smaller samples remain visible in the flight-count chart. An empty slot means no observations, not zero flights.

Recorded outcomes

  • On time 71.3% 2,589
  • Delayed >15 min 27.9% 1,013
  • Cancelled 0.7% 27
  • Missing departure time 0.0% 0

All recorded flights with a known scheduled local time, counted once. Missing actual times are shown separately.

On time means departing no more than 15 minutes after schedule. Cancelled flights and flights missing departure times are excluded from the on-time rate and average delay.

Flight numbers on this route

46
46 of 46
Flight numbersBy direction DeparturesOn time
WN3874 SAN → BNA 117 87.1%
WN4489 BNA → SAN 108 70.1%
WN1432 BNA → SAN 61 63.9%
WN1970 SAN → BNA 61 96.7%
WN1292 BNA → SAN 60 81.4%
WN1306 BNA → SAN 60 88.3%
WN444 SAN → BNA 60 66.1%
WN2438 SAN → BNA 59 49.2%
WN971 SAN → BNA 59 69.5%
WN2130 SAN → BNA 58 85.7%
WN2629 SAN → BNA 58 94.8%
WN3480 SAN → BNA 58 82.1%
WN4053 SAN → BNA 58 89.3%
WN785 BNA → SAN 58 56.1%
WN1065 BNA → SAN 57 80.7%
WN1070 SAN → BNA 57 89.5%
WN2377 BNA → SAN 57 94.7%
WN3478 SAN → BNA 57 87.7%
WN1978 BNA → SAN 55 34.6%
WN635 BNA → SAN 55 77.8%
WN2127 SAN → BNA 53 83.0%
WN659 BNA → SAN 50 86.0%
WN738 SAN → BNA 50 96.0%
WN777 BNA → SAN 50 74.0%
WN3021 SAN → BNA 49 38.8%
WN493 BNA → SAN 47 88.6%
WN1307 BNA → SAN 46 71.7%
WN178 SAN → BNA 46 82.2%
WN3187 BNA → SAN 46 71.1%
WN779 BNA → SAN 44 65.9%
WN1010 BNA → SAN 42 66.7%
WN4111 BNA → SAN 42 26.2%
WN4147 SAN → BNA 42 19.1%
WN442 SAN → BNA 42 40.5%
WN800 BNA → SAN 42 57.1%
WN1329 BNA → SAN 37 54.1%
WN1136 BNA → SAN 33 45.5%
WN150 SAN → BNA 33 62.5%
WN2278 SAN → BNA 33 45.5%
WN2961 SAN → BNA 33 90.6%
WN2973 BNA → SAN 33 87.9%
WN336 SAN → BNA 33 87.9%
WN4588 BNA → SAN 33 72.7%
WN2739 SAN → BNA 32 34.4%
WN4346 SAN → BNA 32 75.0%
WN3886 SAN → BNA 31 96.8%

Flight numbers are the codes sold on tickets. On shared flights one aircraft can carry several of them. Only numbers with at least 30 flights have a page.

Monthly figures
PeriodFlights operated Change vs last yearCancelled On-time departures
July 2026 216 +22.7% 0 56.9%
June 2026 206 +24.8% 2 53.4%
May 2026 200 +37.9% 2 61.5%
April 2026 199 +43.2% 1 68.8%
March 2026 205 +47.5% 1 68.3%
February 2026 141 +22.6% 1 77.3%
January 2026 136 +2.3% 8 79.4%
December 2025 181 +4.6% 1 73.5%
November 2025 168 +2.4% 2 73.8%
October 2025 176 +54.4% 0 68.8%
September 2025 154 0 81.2%
August 2025 157 0 76.4%
July 2025 176 0 66.5%
June 2025 165 1 67.3%
May 2025 145 1 74.5%
April 2025 139 0 79.9%
March 2025 139 2 80.6%
February 2025 115 0 82.6%
January 2025 133 2 81.2%
December 2024 173 3 71.7%
November 2024 164 0 79.9%
October 2024 114 0 86.8%

How to read this chart

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