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1,306 km · Domestic

Philadelphia (PHL) – St. Louis Lambert (STL)

In July 2026, 287 flights operated between Philadelphia and St. Louis Lambert (both directions), and 66.6% 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
January162194▲ 19.8%
February150154▲ 2.7%
March207228▲ 10.1%
April229257▲ 12.2%
May231287▲ 24.2%
June259292▲ 12.7%
July262287▲ 9.5%
August284––
September264––
October294–in progress
November322––
December296––
Year to date (Jan–Jul)1,5001,699▲ 13.3%

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
January84.6%84.0%▼ 0.7%
February86.0%90.3%▲ 5.0%
March81.6%72.8%▼ 10.8%
April86.9%80.5%▼ 7.4%
May81.8%67.6%▼ 17.4%
June69.1%70.9%▲ 2.6%
July67.9%66.6%▼ 1.9%
August71.5%––
September77.7%––
October78.2%–in progress
November79.8%––
December74.0%––
Year-to-date average (Jan–Jul)79.7%76.1%▼ 4.5%

Cancelled flights by month

The most recent periods19 periods
PeriodCancelled flights 2025Cancelled flights 2026Change vs last year
January2010▼ 50.0%
February614▲ 133.3%
March34▲ 33.3%
April110.0%
May50▼ 100.0%
June52▼ 60.0%
July813▲ 62.5%
August0––
September0––
October0–in progress
November3––
December2––
Year to date (Jan–Jul)4844▼ 8.3%

Airlines on this route

  1. Southwest Airlines 46.1%
  2. American Airlines 34.8%
  3. PSA Airlines 13.1%
  4. Republic Airways 6.0%

Oct 1, 2024 – Jul 31, 2026

By direction

PHL → STL

Scheduled flights
2,762
Flights operated
2,715
Cancelled
47 · 1.7%
On-time departures
77.1%

STL → PHL

Scheduled flights
2,758
Flights operated
2,707
Cancelled
51 · 1.8%
On-time departures
78.2%

PHL → STL and STL → PHL counted separately.

Airlines on this route

Oct 1, 2024 – Jul 31, 2026
AirlineScheduled flights Share On-time departures Cancelled
Southwest Airlines WN 2,545 46.1% 74.9% 19
American Airlines AA 1,922 34.8% 78.0% 31
PSA Airlines OH 724 13.1% 81.1% 41
Republic Airways YX 329 6.0% 90.1% 7

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 delay08:00–09:001.7min · 491 recorded · 489 measured
Gap to highest-delay hour26.9min08:00 ↔ 15:00
Recorded flights5,520PHL–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 · Fewer than 200 measured departures · 18 recorded · 18 measured · Source: the US BTS 06:00 · 91.1% · 739 recorded · 721 measured · Source: the US BTS 07:00 · 93.3% · 363 recorded · 359 measured · Source: the US BTS 08:00 · 95.1% · 491 recorded · 489 measured · Source: the US BTS 09:00 · Fewer than 200 measured departures · 181 recorded · 178 measured · Source: the US BTS 10:00 · 82.7% · 295 recorded · 295 measured · Source: the US BTS 11:00 · 82.5% · 400 recorded · 395 measured · Source: the US BTS 12:00 · Fewer than 200 measured departures · 133 recorded · 133 measured · Source: the US BTS 13:00 · 77.8% · 433 recorded · 427 measured · Source: the US BTS 14:00 · 78.1% · 384 recorded · 374 measured · Source: the US BTS 15:00 · 58.4% · 218 recorded · 214 measured · Source: the US BTS 16:00 · Fewer than 200 measured departures · 156 recorded · 152 measured · Source: the US BTS 17:00 · 69.4% · 288 recorded · 278 measured · Source: the US BTS 18:00 · 59.3% · 368 recorded · 361 measured · Source: the US BTS 19:00 · 66.4% · 547 recorded · 539 measured · Source: the US BTS 20:00 · 58.8% · 328 recorded · 320 measured · Source: the US BTS 21:00 · Fewer than 200 measured departures · 137 recorded · 129 measured · Source: the US BTS 22:00 · Fewer than 200 measured departures · 41 recorded · 40 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 · 18 recorded · 18 measured · Source: the US BTS 06:00 · 7.9 min · 739 recorded · 721 measured · Source: the US BTS 07:00 · 5.1 min · 363 recorded · 359 measured · Source: the US BTS 08:00 · 1.7 min · 491 recorded · 489 measured · Source: the US BTS 09:00 · Fewer than 200 measured departures · 181 recorded · 178 measured · Source: the US BTS 10:00 · 13.4 min · 295 recorded · 295 measured · Source: the US BTS 11:00 · 8.7 min · 400 recorded · 395 measured · Source: the US BTS 12:00 · Fewer than 200 measured departures · 133 recorded · 133 measured · Source: the US BTS 13:00 · 15.0 min · 433 recorded · 427 measured · Source: the US BTS 14:00 · 11.2 min · 384 recorded · 374 measured · Source: the US BTS 15:00 · 28.6 min · 218 recorded · 214 measured · Source: the US BTS 16:00 · Fewer than 200 measured departures · 156 recorded · 152 measured · Source: the US BTS 17:00 · 22.0 min · 288 recorded · 278 measured · Source: the US BTS 18:00 · 26.9 min · 368 recorded · 361 measured · Source: the US BTS 19:00 · 24.1 min · 547 recorded · 539 measured · Source: the US BTS 20:00 · 25.7 min · 328 recorded · 320 measured · Source: the US BTS 21:00 · Fewer than 200 measured departures · 137 recorded · 129 measured · Source: the US BTS 22:00 · Fewer than 200 measured departures · 41 recorded · 40 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 · 18 · 18 recorded · 18 measured · Source: the US BTS 06:00 · 739 · 739 recorded · 721 measured · Source: the US BTS 07:00 · 363 · 363 recorded · 359 measured · Source: the US BTS 08:00 · 491 · 491 recorded · 489 measured · Source: the US BTS 09:00 · 181 · 181 recorded · 178 measured · Source: the US BTS 10:00 · 295 · 295 recorded · 295 measured · Source: the US BTS 11:00 · 400 · 400 recorded · 395 measured · Source: the US BTS 12:00 · 133 · 133 recorded · 133 measured · Source: the US BTS 13:00 · 433 · 433 recorded · 427 measured · Source: the US BTS 14:00 · 384 · 384 recorded · 374 measured · Source: the US BTS 15:00 · 218 · 218 recorded · 214 measured · Source: the US BTS 16:00 · 156 · 156 recorded · 152 measured · Source: the US BTS 17:00 · 288 · 288 recorded · 278 measured · Source: the US BTS 18:00 · 368 · 368 recorded · 361 measured · Source: the US BTS 19:00 · 547 · 547 recorded · 539 measured · Source: the US BTS 20:00 · 328 · 328 recorded · 320 measured · Source: the US BTS 21:00 · 137 · 137 recorded · 129 measured · Source: the US BTS 22:00 · 41 · 41 recorded · 40 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—1818
06:0091.1%7.9 min721739
07:0093.3%5.1 min359363
08:0095.1%1.7 min489491
09:00Fewer than 200 measured departures—178181
10:0082.7%13.4 min295295
11:0082.5%8.7 min395400
12:00Fewer than 200 measured departures—133133
13:0077.8%15.0 min427433
14:0078.1%11.2 min374384
15:0058.4%28.6 min214218
16:00Fewer than 200 measured departures—152156
17:0069.4%22.0 min278288
18:0059.3%26.9 min361368
19:0066.4%24.1 min539547
20:0058.8%25.7 min320328
21:00Fewer than 200 measured departures—129137
22:00Fewer than 200 measured departures—4041
23:00No observations———

Day of week

On-time departures Partial coverage: only airlines that report on-time data to the US DOT
Monday · 73.6% · 859 recorded · 838 measured · Source: the US BTS Tuesday · 80.0% · 770 recorded · 759 measured · Source: the US BTS Wednesday · 82.8% · 765 recorded · 760 measured · Source: the US BTS Thursday · 77.7% · 825 recorded · 812 measured · Source: the US BTS Friday · 74.9% · 842 recorded · 834 measured · Source: the US BTS Saturday · 79.6% · 602 recorded · 589 measured · Source: the US BTS Sunday · 76.3% · 857 recorded · 830 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 · 19.8 min · 859 recorded · 838 measured · Source: the US BTS Tuesday · 10.8 min · 770 recorded · 759 measured · Source: the US BTS Wednesday · 8.9 min · 765 recorded · 760 measured · Source: the US BTS Thursday · 14.9 min · 825 recorded · 812 measured · Source: the US BTS Friday · 20.1 min · 842 recorded · 834 measured · Source: the US BTS Saturday · 10.0 min · 602 recorded · 589 measured · Source: the US BTS Sunday · 17.7 min · 857 recorded · 830 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 · 859 · 859 recorded · 838 measured · Source: the US BTS Tuesday · 770 · 770 recorded · 759 measured · Source: the US BTS Wednesday · 765 · 765 recorded · 760 measured · Source: the US BTS Thursday · 825 · 825 recorded · 812 measured · Source: the US BTS Friday · 842 · 842 recorded · 834 measured · Source: the US BTS Saturday · 602 · 602 recorded · 589 measured · Source: the US BTS Sunday · 857 · 857 recorded · 830 measured · Source: the US BTS

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View the figures
Day of weekOn-time departuresAverage departure delayWith departure timeRecorded flights
Monday73.6%19.8 min838859
Tuesday80.0%10.8 min759770
Wednesday82.8%8.9 min760765
Thursday77.7%14.9 min812825
Friday74.9%20.1 min834842
Saturday79.6%10.0 min589602
Sunday76.3%17.7 min830857

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 · 84.3% · 386 recorded · 356 measured · Source: the US BTS Feb · 88.2% · 324 recorded · 304 measured · Source: the US BTS Mar · 77.0% · 442 recorded · 435 measured · Source: the US BTS Apr · 83.5% · 488 recorded · 486 measured · Source: the US BTS May · 73.9% · 523 recorded · 518 measured · Source: the US BTS Jun · 70.1% · 558 recorded · 551 measured · Source: the US BTS Jul · 67.2% · 570 recorded · 549 measured · Source: the US BTS Aug · 71.5% · 284 recorded · 284 measured · Source: the US BTS Sep · 77.7% · 264 recorded · 264 measured · Source: the US BTS Oct · 83.3% · 534 recorded · 534 measured · Source: the US BTS Nov · 82.9% · 584 recorded · 580 measured · Source: the US BTS Dec · 76.7% · 563 recorded · 561 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 · 386 recorded · 356 measured · Source: the US BTS Feb · 3.8 min · 324 recorded · 304 measured · Source: the US BTS Mar · 19.9 min · 442 recorded · 435 measured · Source: the US BTS Apr · 6.4 min · 488 recorded · 486 measured · Source: the US BTS May · 15.1 min · 523 recorded · 518 measured · Source: the US BTS Jun · 22.2 min · 558 recorded · 551 measured · Source: the US BTS Jul · 25.2 min · 570 recorded · 549 measured · Source: the US BTS Aug · 20.5 min · 284 recorded · 284 measured · Source: the US BTS Sep · 16.2 min · 264 recorded · 264 measured · Source: the US BTS Oct · 14.3 min · 534 recorded · 534 measured · Source: the US BTS Nov · 7.1 min · 584 recorded · 580 measured · Source: the US BTS Dec · 16.7 min · 563 recorded · 561 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 · 386 · 386 recorded · 356 measured · Source: the US BTS Feb · 324 · 324 recorded · 304 measured · Source: the US BTS Mar · 442 · 442 recorded · 435 measured · Source: the US BTS Apr · 488 · 488 recorded · 486 measured · Source: the US BTS May · 523 · 523 recorded · 518 measured · Source: the US BTS Jun · 558 · 558 recorded · 551 measured · Source: the US BTS Jul · 570 · 570 recorded · 549 measured · Source: the US BTS Aug · 284 · 284 recorded · 284 measured · Source: the US BTS Sep · 264 · 264 recorded · 264 measured · Source: the US BTS Oct · 534 · 534 recorded · 534 measured · Source: the US BTS Nov · 584 · 584 recorded · 580 measured · Source: the US BTS Dec · 563 · 563 recorded · 561 measured · Source: the US BTS

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View the figures
Month of yearOn-time departuresAverage departure delayWith departure timeRecorded flights
Jan84.3%8.1 min356386
Feb88.2%3.8 min304324
Mar77.0%19.9 min435442
Apr83.5%6.4 min486488
May73.9%15.1 min518523
Jun70.1%22.2 min551558
Jul67.2%25.2 min549570
Aug71.5%20.5 min284284
Sep77.7%16.2 min264264
Oct83.3%14.3 min534534
Nov82.9%7.1 min580584
Dec76.7%16.7 min561563

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 76.3% 4,211
  • Delayed >15 min 21.9% 1,211
  • Cancelled 1.8% 98
  • 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

68
68 of 68
Flight numbersBy direction DeparturesOn time
AA1308 STL → PHL 294 89.7%
AA1368 PHL → STL 287 72.4%
AA3049 STL → PHL 126 63.2%
WN1178 PHL → STL 109 99.1%
WN1390 STL → PHL 104 82.2%
AA2275 STL → PHL 87 81.4%
AA2714 PHL → STL 71 57.4%
AA2714 STL → PHL 70 65.6%
OH5373 STL → PHL 70 86.4%
OH5373 PHL → STL 70 86.8%
WN1323 STL → PHL 67 84.9%
AA2720 STL → PHL 62 83.9%
AA2275 PHL → STL 61 77.1%
AA2720 PHL → STL 61 90.2%
WN3937 STL → PHL 61 73.8%
WN4039 PHL → STL 60 45.0%
WN4192 PHL → STL 60 48.3%
WN1499 PHL → STL 59 91.5%
WN1049 STL → PHL 58 69.0%
WN1548 PHL → STL 58 75.9%
WN3022 STL → PHL 58 55.2%
WN3814 STL → PHL 58 96.4%
WN635 STL → PHL 58 75.4%
AA2571 PHL → STL 56 69.1%
AA3162 PHL → STL 54 88.5%
AA3162 STL → PHL 54 84.6%
AA2368 STL → PHL 52 71.4%
WN4114 STL → PHL 51 68.0%
WN4378 PHL → STL 51 79.6%
WN1794 STL → PHL 50 70.0%
WN3227 PHL → STL 50 94.0%
WN3517 PHL → STL 50 86.0%
WN3966 STL → PHL 50 30.0%
WN480 PHL → STL 49 85.7%
WN668 PHL → STL 49 46.9%
OH5623 STL → PHL 48 88.1%
WN1397 PHL → STL 47 86.7%
WN676 STL → PHL 46 65.2%
AA2554 PHL → STL 45 54.6%
WN2334 STL → PHL 45 88.9%
AA2368 PHL → STL 44 70.5%
WN576 PHL → STL 43 90.7%
WN106 PHL → STL 42 83.3%
WN2679 PHL → STL 42 42.5%
WN3727 STL → PHL 42 59.5%
YX4796 STL → PHL 41 80.5%
WN4952 PHL → STL 39 89.7%
AA3130 PHL → STL 38 81.6%
AA3130 STL → PHL 38 84.2%
OH5224 PHL → STL 37 68.8%
YX4756 PHL → STL 37 94.4%
YX4759 STL → PHL 37 83.3%
OH5077 STL → PHL 36 88.6%
OH5567 PHL → STL 36 86.1%
WN1044 STL → PHL 35 68.6%
WN2258 PHL → STL 35 65.7%
YX4456 PHL → STL 35 91.4%
OH5623 PHL → STL 33 70.0%
WN1297 PHL → STL 33 97.0%
WN170 STL → PHL 33 63.6%
WN3686 STL → PHL 33 51.5%
AA2925 STL → PHL 31 93.3%
AA3049 PHL → STL 31 71.0%
AA3089 PHL → STL 31 90.3%
WN1738 PHL → STL 31 83.9%
WN4504 STL → PHL 31 71.0%
YX4639 STL → PHL 31 93.1%
WN4080 STL → PHL 30 83.3%

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 287 +9.5% 13 66.6%
June 2026 292 +12.7% 2 70.9%
May 2026 287 +24.2% 0 67.6%
April 2026 257 +12.2% 1 80.5%
March 2026 228 +10.1% 4 72.8%
February 2026 154 +2.7% 14 90.3%
January 2026 194 +19.8% 10 84.0%
December 2025 296 +11.7% 2 74.0%
November 2025 322 +24.8% 3 79.8%
October 2025 294 +22.5% 0 78.2%
September 2025 264 0 77.7%
August 2025 284 0 71.5%
July 2025 262 8 67.9%
June 2025 259 5 69.1%
May 2025 231 5 81.8%
April 2025 229 1 86.9%
March 2025 207 3 81.6%
February 2025 150 6 86.0%
January 2025 162 20 84.6%
December 2024 265 0 79.6%
November 2024 258 1 86.8%
October 2024 240 0 89.6%

How to read this chart

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