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1,161 km · Domestic

Austin Bergstrom (AUS) – St. Louis Lambert (STL)

In July 2026, 178 flights operated between Austin Bergstrom and St. Louis Lambert (both directions), and 62.4% 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
January118123▲ 4.2%
February120118▼ 1.7%
March155171▲ 10.3%
April173178▲ 2.9%
May179185▲ 3.4%
June182172▼ 5.5%
July186178▼ 4.3%
August151––
September146––
October166–in progress
November170––
December182––
Year to date (Jan–Jul)1,1131,125▲ 1.1%

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
January79.7%83.7%▲ 5.0%
February75.0%77.1%▲ 2.8%
March76.8%70.2%▼ 8.6%
April82.7%76.4%▼ 7.6%
May77.7%61.1%▼ 21.4%
June78.0%59.9%▼ 23.2%
July66.1%62.4%▼ 5.6%
August74.2%––
September80.1%––
October70.5%–in progress
November70.6%––
December68.7%––
Year-to-date average (Jan–Jul)76.6%70.1%▼ 8.4%

Cancelled flights by month

The most recent periods19 periods
PeriodCancelled flights 2025Cancelled flights 2026Change vs last year
January73▼ 57.1%
February00–
March110.0%
April10▼ 100.0%
May10▼ 100.0%
June00–
July00–
August1––
September0––
October0–in progress
November0––
December0––
Year to date (Jan–Jul)104▼ 60.0%

By direction

AUS → STL

Scheduled flights
1,744
Flights operated
1,739
Cancelled
5 · 0.3%
On-time departures
74.5%

STL → AUS

Scheduled flights
1,742
Flights operated
1,731
Cancelled
11 · 0.6%
On-time departures
73.0%

AUS → STL and STL → AUS counted separately.

Airlines on this route

Oct 1, 2024 – Jul 31, 2026
AirlineScheduled flights Share On-time departures Cancelled
Southwest Airlines WN 3,486 100.0% 73.7% 16

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 delay05:00–06:00-2.6min · 284 recorded · 282 measured
Gap to highest-delay hour31.8min05:00 ↔ 17:00
Recorded flights3,486AUS–STL

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 · 96.5% · 284 recorded · 282 measured · Source: the US BTS 06:00 · Fewer than 200 measured departures · 159 recorded · 158 measured · Source: the US BTS 07:00 · Fewer than 200 measured departures · 181 recorded · 181 measured · Source: the US BTS 08:00 · Fewer than 200 measured departures · 174 recorded · 174 measured · Source: the US BTS 09:00 · Fewer than 200 measured departures · 160 recorded · 158 measured · Source: the US BTS 10:00 · 87.1% · 343 recorded · 340 measured · Source: the US BTS 11:00 · Fewer than 200 measured departures · 109 recorded · 109 measured · Source: the US BTS 12:00 · 77.4% · 261 recorded · 261 measured · Source: the US BTS 13:00 · 67.0% · 221 recorded · 221 measured · Source: the US BTS 14:00 · 63.2% · 212 recorded · 212 measured · Source: the US BTS 15:00 · 67.2% · 353 recorded · 351 measured · Source: the US BTS 16:00 · 60.5% · 233 recorded · 233 measured · Source: the US BTS 17:00 · 44.4% · 279 recorded · 279 measured · Source: the US BTS 18:00 · Fewer than 200 measured departures · 66 recorded · 66 measured · Source: the US BTS 19:00 · Fewer than 200 measured departures · 42 recorded · 42 measured · Source: the US BTS 20:00 · Fewer than 200 measured departures · 98 recorded · 96 measured · Source: the US BTS 21:00 · Fewer than 200 measured departures · 139 recorded · 138 measured · Source: the US BTS 22:00 · Fewer than 200 measured departures · 172 recorded · 169 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 · -2.6 min · 284 recorded · 282 measured · Source: the US BTS 06:00 · Fewer than 200 measured departures · 159 recorded · 158 measured · Source: the US BTS 07:00 · Fewer than 200 measured departures · 181 recorded · 181 measured · Source: the US BTS 08:00 · Fewer than 200 measured departures · 174 recorded · 174 measured · Source: the US BTS 09:00 · Fewer than 200 measured departures · 160 recorded · 158 measured · Source: the US BTS 10:00 · 6.5 min · 343 recorded · 340 measured · Source: the US BTS 11:00 · Fewer than 200 measured departures · 109 recorded · 109 measured · Source: the US BTS 12:00 · 9.7 min · 261 recorded · 261 measured · Source: the US BTS 13:00 · 18.1 min · 221 recorded · 221 measured · Source: the US BTS 14:00 · 18.6 min · 212 recorded · 212 measured · Source: the US BTS 15:00 · 17.6 min · 353 recorded · 351 measured · Source: the US BTS 16:00 · 22.3 min · 233 recorded · 233 measured · Source: the US BTS 17:00 · 29.3 min · 279 recorded · 279 measured · Source: the US BTS 18:00 · Fewer than 200 measured departures · 66 recorded · 66 measured · Source: the US BTS 19:00 · Fewer than 200 measured departures · 42 recorded · 42 measured · Source: the US BTS 20:00 · Fewer than 200 measured departures · 98 recorded · 96 measured · Source: the US BTS 21:00 · Fewer than 200 measured departures · 139 recorded · 138 measured · Source: the US BTS 22:00 · Fewer than 200 measured departures · 172 recorded · 169 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 · 284 · 284 recorded · 282 measured · Source: the US BTS 06:00 · 159 · 159 recorded · 158 measured · Source: the US BTS 07:00 · 181 · 181 recorded · 181 measured · Source: the US BTS 08:00 · 174 · 174 recorded · 174 measured · Source: the US BTS 09:00 · 160 · 160 recorded · 158 measured · Source: the US BTS 10:00 · 343 · 343 recorded · 340 measured · Source: the US BTS 11:00 · 109 · 109 recorded · 109 measured · Source: the US BTS 12:00 · 261 · 261 recorded · 261 measured · Source: the US BTS 13:00 · 221 · 221 recorded · 221 measured · Source: the US BTS 14:00 · 212 · 212 recorded · 212 measured · Source: the US BTS 15:00 · 353 · 353 recorded · 351 measured · Source: the US BTS 16:00 · 233 · 233 recorded · 233 measured · Source: the US BTS 17:00 · 279 · 279 recorded · 279 measured · Source: the US BTS 18:00 · 66 · 66 recorded · 66 measured · Source: the US BTS 19:00 · 42 · 42 recorded · 42 measured · Source: the US BTS 20:00 · 98 · 98 recorded · 96 measured · Source: the US BTS 21:00 · 139 · 139 recorded · 138 measured · Source: the US BTS 22:00 · 172 · 172 recorded · 169 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———
05:0096.5%-2.6 min282284
06:00Fewer than 200 measured departures—158159
07:00Fewer than 200 measured departures—181181
08:00Fewer than 200 measured departures—174174
09:00Fewer than 200 measured departures—158160
10:0087.1%6.5 min340343
11:00Fewer than 200 measured departures—109109
12:0077.4%9.7 min261261
13:0067.0%18.1 min221221
14:0063.2%18.6 min212212
15:0067.2%17.6 min351353
16:0060.5%22.3 min233233
17:0044.4%29.3 min279279
18:00Fewer than 200 measured departures—6666
19:00Fewer than 200 measured departures—4242
20:00Fewer than 200 measured departures—9698
21:00Fewer than 200 measured departures—138139
22:00Fewer than 200 measured departures—169172
23:00No observations———

Day of week

On-time departures Partial coverage: only airlines that report on-time data to the US DOT
Monday · 70.0% · 534 recorded · 530 measured · Source: the US BTS Tuesday · 81.4% · 479 recorded · 479 measured · Source: the US BTS Wednesday · 78.8% · 480 recorded · 480 measured · Source: the US BTS Thursday · 75.2% · 533 recorded · 533 measured · Source: the US BTS Friday · 72.8% · 538 recorded · 537 measured · Source: the US BTS Saturday · 73.7% · 337 recorded · 335 measured · Source: the US BTS Sunday · 66.0% · 585 recorded · 576 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 · 14.3 min · 534 recorded · 530 measured · Source: the US BTS Tuesday · 8.1 min · 479 recorded · 479 measured · Source: the US BTS Wednesday · 8.3 min · 480 recorded · 480 measured · Source: the US BTS Thursday · 11.3 min · 533 recorded · 533 measured · Source: the US BTS Friday · 13.6 min · 538 recorded · 537 measured · Source: the US BTS Saturday · 11.8 min · 337 recorded · 335 measured · Source: the US BTS Sunday · 19.8 min · 585 recorded · 576 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 · 534 · 534 recorded · 530 measured · Source: the US BTS Tuesday · 479 · 479 recorded · 479 measured · Source: the US BTS Wednesday · 480 · 480 recorded · 480 measured · Source: the US BTS Thursday · 533 · 533 recorded · 533 measured · Source: the US BTS Friday · 538 · 538 recorded · 537 measured · Source: the US BTS Saturday · 337 · 337 recorded · 335 measured · Source: the US BTS Sunday · 585 · 585 recorded · 576 measured · Source: the US BTS

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View the figures
Day of weekOn-time departuresAverage departure delayWith departure timeRecorded flights
Monday70.0%14.3 min530534
Tuesday81.4%8.1 min479479
Wednesday78.8%8.3 min480480
Thursday75.2%11.3 min533533
Friday72.8%13.6 min537538
Saturday73.7%11.8 min335337
Sunday66.0%19.8 min576585

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 · 81.7% · 251 recorded · 241 measured · Source: the US BTS Feb · 76.1% · 238 recorded · 238 measured · Source: the US BTS Mar · 73.3% · 328 recorded · 326 measured · Source: the US BTS Apr · 79.5% · 352 recorded · 351 measured · Source: the US BTS May · 69.2% · 365 recorded · 364 measured · Source: the US BTS Jun · 69.2% · 354 recorded · 354 measured · Source: the US BTS Jul · 64.3% · 364 recorded · 364 measured · Source: the US BTS Aug · Fewer than 200 measured departures · 152 recorded · 151 measured · Source: the US BTS Sep · Fewer than 200 measured departures · 146 recorded · 146 measured · Source: the US BTS Oct · 75.6% · 275 recorded · 274 measured · Source: the US BTS Nov · 77.5% · 325 recorded · 325 measured · Source: the US BTS Dec · 72.3% · 336 recorded · 336 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 · 8.1 min · 251 recorded · 241 measured · Source: the US BTS Feb · 9.9 min · 238 recorded · 238 measured · Source: the US BTS Mar · 13.5 min · 328 recorded · 326 measured · Source: the US BTS Apr · 10.4 min · 352 recorded · 351 measured · Source: the US BTS May · 17.2 min · 365 recorded · 364 measured · Source: the US BTS Jun · 16.5 min · 354 recorded · 354 measured · Source: the US BTS Jul · 17.8 min · 364 recorded · 364 measured · Source: the US BTS Aug · Fewer than 200 measured departures · 152 recorded · 151 measured · Source: the US BTS Sep · Fewer than 200 measured departures · 146 recorded · 146 measured · Source: the US BTS Oct · 9.9 min · 275 recorded · 274 measured · Source: the US BTS Nov · 10.3 min · 325 recorded · 325 measured · Source: the US BTS Dec · 11.2 min · 336 recorded · 336 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 · 251 · 251 recorded · 241 measured · Source: the US BTS Feb · 238 · 238 recorded · 238 measured · Source: the US BTS Mar · 328 · 328 recorded · 326 measured · Source: the US BTS Apr · 352 · 352 recorded · 351 measured · Source: the US BTS May · 365 · 365 recorded · 364 measured · Source: the US BTS Jun · 354 · 354 recorded · 354 measured · Source: the US BTS Jul · 364 · 364 recorded · 364 measured · Source: the US BTS Aug · 152 · 152 recorded · 151 measured · Source: the US BTS Sep · 146 · 146 recorded · 146 measured · Source: the US BTS Oct · 275 · 275 recorded · 274 measured · Source: the US BTS Nov · 325 · 325 recorded · 325 measured · Source: the US BTS Dec · 336 · 336 recorded · 336 measured · Source: the US BTS

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View the figures
Month of yearOn-time departuresAverage departure delayWith departure timeRecorded flights
Jan81.7%8.1 min241251
Feb76.1%9.9 min238238
Mar73.3%13.5 min326328
Apr79.5%10.4 min351352
May69.2%17.2 min364365
Jun69.2%16.5 min354354
Jul64.3%17.8 min364364
AugFewer than 200 measured departures—151152
SepFewer than 200 measured departures—146146
Oct75.6%9.9 min274275
Nov77.5%10.3 min325325
Dec72.3%11.2 min336336

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 73.4% 2,558
  • Delayed >15 min 26.2% 912
  • Cancelled 0.5% 16
  • 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

44
44 of 44
Flight numbersBy direction DeparturesOn time
WN146 AUS → STL 120 90.8%
WN1877 STL → AUS 117 86.1%
WN1325 STL → AUS 109 72.9%
WN408 AUS → STL 93 88.2%
WN286 AUS → STL 92 71.4%
WN3998 STL → AUS 61 60.7%
WN827 AUS → STL 61 50.8%
WN1339 STL → AUS 60 90.0%
WN813 AUS → STL 60 70.0%
WN4420 STL → AUS 59 47.5%
WN1262 STL → AUS 58 82.8%
WN1774 STL → AUS 58 44.8%
WN454 AUS → STL 58 94.8%
WN463 STL → AUS 58 84.5%
WN987 AUS → STL 58 75.9%
WN100 AUS → STL 57 91.2%
WN1193 AUS → STL 57 47.4%
WN2524 STL → AUS 57 89.5%
WN3884 STL → AUS 57 84.2%
WN4515 STL → AUS 57 45.6%
WN409 AUS → STL 56 67.9%
WN407 AUS → STL 55 96.3%
WN3743 STL → AUS 50 75.5%
WN4157 STL → AUS 50 79.6%
WN461 AUS → STL 50 70.0%
WN803 AUS → STL 50 88.0%
WN4432 STL → AUS 49 67.4%
WN1316 STL → AUS 47 84.8%
WN346 AUS → STL 46 97.8%
WN4545 STL → AUS 46 80.4%
WN329 STL → AUS 44 52.3%
WN1268 AUS → STL 42 73.8%
WN805 AUS → STL 42 83.3%
WN1353 STL → AUS 40 67.5%
WN2478 STL → AUS 40 64.1%
WN823 AUS → STL 36 55.6%
WN4684 AUS → STL 34 26.5%
WN2040 AUS → STL 33 96.9%
WN2379 STL → AUS 33 68.8%
WN3907 AUS → STL 33 60.6%
WN562 STL → AUS 33 71.9%
WN654 AUS → STL 33 97.0%
WN3300 AUS → STL 31 35.5%
WN872 AUS → STL 30 40.0%

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 178 −4.3% 0 62.4%
June 2026 172 −5.5% 0 59.9%
May 2026 185 +3.4% 0 61.1%
April 2026 178 +2.9% 0 76.4%
March 2026 171 +10.3% 1 70.2%
February 2026 118 −1.7% 0 77.1%
January 2026 123 +4.2% 3 83.7%
December 2025 182 +18.2% 0 68.7%
November 2025 170 +9.7% 0 70.6%
October 2025 166 +53.7% 0 70.5%
September 2025 146 0 80.1%
August 2025 151 1 74.2%
July 2025 186 0 66.1%
June 2025 182 0 78.0%
May 2025 179 1 77.7%
April 2025 173 1 82.7%
March 2025 155 1 76.8%
February 2025 120 0 75.0%
January 2025 118 7 79.7%
December 2024 154 0 76.6%
November 2024 155 0 85.2%
October 2024 108 1 83.3%

How to read this chart

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