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657 km · Domestic

John Glenn Columbus (CMH) – St. Louis Lambert (STL)

In July 2026, 116 flights operated between John Glenn Columbus and St. Louis Lambert (both directions), and 74.1% 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
January107109▲ 1.9%
February102104▲ 2.0%
March106116▲ 9.4%
April110112▲ 1.8%
May1121120.0%
June1121120.0%
July114116▲ 1.8%
August111––
September111––
October115–in progress
November108––
December115––
Year to date (Jan–Jul)763781▲ 2.4%

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
January89.7%87.2%▼ 2.8%
February87.3%78.8%▼ 9.7%
March80.2%74.1%▼ 7.6%
April81.8%78.6%▼ 3.9%
May74.1%74.1%0.0%
June73.2%69.6%▼ 4.9%
July70.2%74.1%▲ 5.6%
August87.4%––
September90.1%––
October90.4%–in progress
November78.7%––
December76.5%––
Year-to-date average (Jan–Jul)79.5%76.6%▼ 3.6%

Cancelled flights by month

The most recent periods19 periods
PeriodCancelled flights 2025Cancelled flights 2026Change vs last year
January95▼ 44.4%
February20▼ 100.0%
March00–
April00–
May00–
June00–
July00–
August1––
September1––
October0–in progress
November0––
December0––
Year to date (Jan–Jul)115▼ 54.5%

By direction

CMH → STL

Scheduled flights
1,209
Flights operated
1,199
Cancelled
10 · 0.8%
On-time departures
82.3%

STL → CMH

Scheduled flights
1,212
Flights operated
1,204
Cancelled
8 · 0.7%
On-time departures
78.4%

CMH → STL and STL → CMH counted separately.

Airlines on this route

Oct 1, 2024 – Jul 31, 2026
AirlineScheduled flights Share On-time departures Cancelled
Southwest Airlines WN 2,421 100.0% 80.4% 18

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 delay09:00–10:00-0.3min · 217 recorded · 212 measured
Gap to highest-delay hour20.3min09:00 ↔ 19:00
Recorded flights2,421CMH–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 · 1 recorded · 1 measured · Source: the US BTS 06:00 · Fewer than 200 measured departures · 74 recorded · 72 measured · Source: the US BTS 07:00 · 92.8% · 364 recorded · 362 measured · Source: the US BTS 08:00 · 94.5% · 404 recorded · 403 measured · Source: the US BTS 09:00 · 92.0% · 217 recorded · 212 measured · Source: the US BTS 10:00 · Fewer than 200 measured departures · 113 recorded · 113 measured · Source: the US BTS 11:00 · Fewer than 200 measured departures · 11 recorded · 11 measured · Source: the US BTS 12:00 · Fewer than 200 measured departures · 21 recorded · 21 measured · Source: the US BTS 13:00 · Fewer than 200 measured departures · 12 recorded · 12 measured · Source: the US BTS 14:00 · Fewer than 200 measured departures · 10 recorded · 10 measured · Source: the US BTS 15:00 · Fewer than 200 measured departures · 37 recorded · 37 measured · Source: the US BTS 16:00 · Fewer than 200 measured departures · 19 recorded · 19 measured · Source: the US BTS 17:00 · Fewer than 200 measured departures · 26 recorded · 26 measured · Source: the US BTS 18:00 · 79.9% · 292 recorded · 289 measured · Source: the US BTS 19:00 · 66.7% · 256 recorded · 255 measured · Source: the US BTS 20:00 · 63.8% · 401 recorded · 398 measured · Source: the US BTS 21:00 · Fewer than 200 measured departures · 163 recorded · 162 measured · Source: the US BTS 22:00 · No observations · 0 recorded · 0 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 · 1 recorded · 1 measured · Source: the US BTS 06:00 · Fewer than 200 measured departures · 74 recorded · 72 measured · Source: the US BTS 07:00 · 1.6 min · 364 recorded · 362 measured · Source: the US BTS 08:00 · 0.4 min · 404 recorded · 403 measured · Source: the US BTS 09:00 · -0.3 min · 217 recorded · 212 measured · Source: the US BTS 10:00 · Fewer than 200 measured departures · 113 recorded · 113 measured · Source: the US BTS 11:00 · Fewer than 200 measured departures · 11 recorded · 11 measured · Source: the US BTS 12:00 · Fewer than 200 measured departures · 21 recorded · 21 measured · Source: the US BTS 13:00 · Fewer than 200 measured departures · 12 recorded · 12 measured · Source: the US BTS 14:00 · Fewer than 200 measured departures · 10 recorded · 10 measured · Source: the US BTS 15:00 · Fewer than 200 measured departures · 37 recorded · 37 measured · Source: the US BTS 16:00 · Fewer than 200 measured departures · 19 recorded · 19 measured · Source: the US BTS 17:00 · Fewer than 200 measured departures · 26 recorded · 26 measured · Source: the US BTS 18:00 · 8.0 min · 292 recorded · 289 measured · Source: the US BTS 19:00 · 20.1 min · 256 recorded · 255 measured · Source: the US BTS 20:00 · 18.8 min · 401 recorded · 398 measured · Source: the US BTS 21:00 · Fewer than 200 measured departures · 163 recorded · 162 measured · Source: the US BTS 22:00 · No observations · 0 recorded · 0 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 · 1 · 1 recorded · 1 measured · Source: the US BTS 06:00 · 74 · 74 recorded · 72 measured · Source: the US BTS 07:00 · 364 · 364 recorded · 362 measured · Source: the US BTS 08:00 · 404 · 404 recorded · 403 measured · Source: the US BTS 09:00 · 217 · 217 recorded · 212 measured · Source: the US BTS 10:00 · 113 · 113 recorded · 113 measured · Source: the US BTS 11:00 · 11 · 11 recorded · 11 measured · Source: the US BTS 12:00 · 21 · 21 recorded · 21 measured · Source: the US BTS 13:00 · 12 · 12 recorded · 12 measured · Source: the US BTS 14:00 · 10 · 10 recorded · 10 measured · Source: the US BTS 15:00 · 37 · 37 recorded · 37 measured · Source: the US BTS 16:00 · 19 · 19 recorded · 19 measured · Source: the US BTS 17:00 · 26 · 26 recorded · 26 measured · Source: the US BTS 18:00 · 292 · 292 recorded · 289 measured · Source: the US BTS 19:00 · 256 · 256 recorded · 255 measured · Source: the US BTS 20:00 · 401 · 401 recorded · 398 measured · Source: the US BTS 21:00 · 163 · 163 recorded · 162 measured · Source: the US BTS 22:00 · No observations · 0 recorded · 0 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—11
06:00Fewer than 200 measured departures—7274
07:0092.8%1.6 min362364
08:0094.5%0.4 min403404
09:0092.0%-0.3 min212217
10:00Fewer than 200 measured departures—113113
11:00Fewer than 200 measured departures—1111
12:00Fewer than 200 measured departures—2121
13:00Fewer than 200 measured departures—1212
14:00Fewer than 200 measured departures—1010
15:00Fewer than 200 measured departures—3737
16:00Fewer than 200 measured departures—1919
17:00Fewer than 200 measured departures—2626
18:0079.9%8.0 min289292
19:0066.7%20.1 min255256
20:0063.8%18.8 min398401
21:00Fewer than 200 measured departures—162163
22:00No observations———
23:00No observations———

Day of week

On-time departures Partial coverage: only airlines that report on-time data to the US DOT
Monday · 80.1% · 377 recorded · 372 measured · Source: the US BTS Tuesday · 85.1% · 376 recorded · 375 measured · Source: the US BTS Wednesday · 82.8% · 374 recorded · 372 measured · Source: the US BTS Thursday · 78.0% · 372 recorded · 372 measured · Source: the US BTS Friday · 80.2% · 374 recorded · 373 measured · Source: the US BTS Saturday · Fewer than 200 measured departures · 188 recorded · 188 measured · Source: the US BTS Sunday · 75.5% · 360 recorded · 351 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 · 10.3 min · 377 recorded · 372 measured · Source: the US BTS Tuesday · 6.6 min · 376 recorded · 375 measured · Source: the US BTS Wednesday · 6.4 min · 374 recorded · 372 measured · Source: the US BTS Thursday · 9.6 min · 372 recorded · 372 measured · Source: the US BTS Friday · 9.1 min · 374 recorded · 373 measured · Source: the US BTS Saturday · Fewer than 200 measured departures · 188 recorded · 188 measured · Source: the US BTS Sunday · 13.0 min · 360 recorded · 351 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 · 377 · 377 recorded · 372 measured · Source: the US BTS Tuesday · 376 · 376 recorded · 375 measured · Source: the US BTS Wednesday · 374 · 374 recorded · 372 measured · Source: the US BTS Thursday · 372 · 372 recorded · 372 measured · Source: the US BTS Friday · 374 · 374 recorded · 373 measured · Source: the US BTS Saturday · 188 · 188 recorded · 188 measured · Source: the US BTS Sunday · 360 · 360 recorded · 351 measured · Source: the US BTS

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View the figures
Day of weekOn-time departuresAverage departure delayWith departure timeRecorded flights
Monday80.1%10.3 min372377
Tuesday85.1%6.6 min375376
Wednesday82.8%6.4 min372374
Thursday78.0%9.6 min372372
Friday80.2%9.1 min373374
SaturdayFewer than 200 measured departures—188188
Sunday75.5%13.0 min351360

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 · 88.4% · 230 recorded · 216 measured · Source: the US BTS Feb · 83.0% · 208 recorded · 206 measured · Source: the US BTS Mar · 77.0% · 222 recorded · 222 measured · Source: the US BTS Apr · 80.2% · 222 recorded · 222 measured · Source: the US BTS May · 74.1% · 224 recorded · 224 measured · Source: the US BTS Jun · 71.4% · 224 recorded · 224 measured · Source: the US BTS Jul · 72.2% · 230 recorded · 230 measured · Source: the US BTS Aug · Fewer than 200 measured departures · 112 recorded · 111 measured · Source: the US BTS Sep · Fewer than 200 measured departures · 112 recorded · 111 measured · Source: the US BTS Oct · Fewer than 200 measured departures · 189 recorded · 189 measured · Source: the US BTS Nov · 83.0% · 217 recorded · 217 measured · Source: the US BTS Dec · 77.9% · 231 recorded · 231 measured · Source: the US BTS

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Average departure delay Partial coverage: only airlines that report on-time data to the US DOT
Jan · 5.0 min · 230 recorded · 216 measured · Source: the US BTS Feb · 8.0 min · 208 recorded · 206 measured · Source: the US BTS Mar · 17.0 min · 222 recorded · 222 measured · Source: the US BTS Apr · 7.6 min · 222 recorded · 222 measured · Source: the US BTS May · 11.6 min · 224 recorded · 224 measured · Source: the US BTS Jun · 16.2 min · 224 recorded · 224 measured · Source: the US BTS Jul · 15.0 min · 230 recorded · 230 measured · Source: the US BTS Aug · Fewer than 200 measured departures · 112 recorded · 111 measured · Source: the US BTS Sep · Fewer than 200 measured departures · 112 recorded · 111 measured · Source: the US BTS Oct · Fewer than 200 measured departures · 189 recorded · 189 measured · Source: the US BTS Nov · 6.6 min · 217 recorded · 217 measured · Source: the US BTS Dec · 7.9 min · 231 recorded · 231 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 · 230 · 230 recorded · 216 measured · Source: the US BTS Feb · 208 · 208 recorded · 206 measured · Source: the US BTS Mar · 222 · 222 recorded · 222 measured · Source: the US BTS Apr · 222 · 222 recorded · 222 measured · Source: the US BTS May · 224 · 224 recorded · 224 measured · Source: the US BTS Jun · 224 · 224 recorded · 224 measured · Source: the US BTS Jul · 230 · 230 recorded · 230 measured · Source: the US BTS Aug · 112 · 112 recorded · 111 measured · Source: the US BTS Sep · 112 · 112 recorded · 111 measured · Source: the US BTS Oct · 189 · 189 recorded · 189 measured · Source: the US BTS Nov · 217 · 217 recorded · 217 measured · Source: the US BTS Dec · 231 · 231 recorded · 231 measured · Source: the US BTS

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View the figures
Month of yearOn-time departuresAverage departure delayWith departure timeRecorded flights
Jan88.4%5.0 min216230
Feb83.0%8.0 min206208
Mar77.0%17.0 min222222
Apr80.2%7.6 min222222
May74.1%11.6 min224224
Jun71.4%16.2 min224224
Jul72.2%15.0 min230230
AugFewer than 200 measured departures—111112
SepFewer than 200 measured departures—111112
OctFewer than 200 measured departures—189189
Nov83.0%6.6 min217217
Dec77.9%7.9 min231231

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 79.8% 1,931
  • Delayed >15 min 19.5% 472
  • Cancelled 0.7% 18
  • 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

33
33 of 33
Flight numbersBy direction DeparturesOn time
WN2406 STL → CMH 109 76.6%
WN1907 CMH → STL 95 88.3%
WN1284 STL → CMH 88 85.7%
WN888 CMH → STL 75 95.9%
WN3421 STL → CMH 60 53.3%
WN1143 CMH → STL 58 91.2%
WN2371 CMH → STL 58 93.1%
WN4784 CMH → STL 58 96.6%
WN2047 STL → CMH 57 73.7%
WN3059 STL → CMH 57 59.7%
WN2054 CMH → STL 55 76.4%
WN4657 STL → CMH 55 65.5%
WN4908 STL → CMH 55 79.6%
WN996 CMH → STL 51 64.7%
WN1144 CMH → STL 50 75.0%
WN1207 CMH → STL 50 96.0%
WN1374 CMH → STL 50 88.0%
WN1924 STL → CMH 50 86.0%
WN2002 STL → CMH 50 86.0%
WN2614 CMH → STL 50 58.0%
WN3902 STL → CMH 50 90.0%
WN757 STL → CMH 50 88.0%
WN2069 STL → CMH 49 93.9%
WN4812 STL → CMH 49 44.9%
WN2163 CMH → STL 44 84.1%
WN358 CMH → STL 43 76.7%
WN739 STL → CMH 43 88.4%
WN3781 CMH → STL 42 78.6%
WN527 CMH → STL 42 82.9%
WN2023 STL → CMH 39 87.2%
WN800 CMH → STL 35 79.4%
WN1970 CMH → STL 33 90.9%
WN2045 STL → CMH 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 116 +1.8% 0 74.1%
June 2026 112 +0.0% 0 69.6%
May 2026 112 +0.0% 0 74.1%
April 2026 112 +1.8% 0 78.6%
March 2026 116 +9.4% 0 74.1%
February 2026 104 +2.0% 0 78.8%
January 2026 109 +1.9% 5 87.2%
December 2025 115 −0.9% 0 76.5%
November 2025 108 −0.9% 0 78.7%
October 2025 115 +55.4% 0 90.4%
September 2025 111 1 90.1%
August 2025 111 1 87.4%
July 2025 114 0 70.2%
June 2025 112 0 73.2%
May 2025 112 0 74.1%
April 2025 110 0 81.8%
March 2025 106 0 80.2%
February 2025 102 2 87.3%
January 2025 107 9 89.7%
December 2024 116 0 79.3%
November 2024 109 0 87.2%
October 2024 74 0 90.5%

How to read this chart

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