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481 km · Domestic

John Glenn Columbus (CMH) – Washington Dulles (IAD)

In July 2026, 7 flights operated between John Glenn Columbus and Washington Dulles (both directions), and 85.7% 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
January99150▲ 51.5%
February85205▲ 141.2%
March125231▲ 84.8%
April282170▼ 39.7%
May256136▼ 46.9%
June22490▼ 59.8%
July1567▼ 95.5%
August217––
September272––
October194–in progress
November118––
December151––
Year to date (Jan–Jul)1,227989▼ 19.4%

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
January78.8%88.7%▲ 12.6%
February87.1%85.4%▼ 2.0%
March84.8%82.3%▼ 2.9%
April89.0%94.1%▲ 5.7%
May85.5%85.3%▼ 0.2%
June78.6%80.0%▲ 1.8%
July71.8%85.7%▲ 19.4%
August88.9%––
September91.2%––
October89.2%–in progress
November94.1%––
December78.1%––
Year-to-date average (Jan–Jul)82.2%85.9%▲ 4.5%

Cancelled flights by month

The most recent periods19 periods
PeriodCancelled flights 2025Cancelled flights 2026Change vs last year
January39▲ 200.0%
February03–
March02–
April00–
May21▼ 50.0%
June20▼ 100.0%
July140▼ 100.0%
August1––
September0––
October0–in progress
November2––
December0––
Year to date (Jan–Jul)2115▼ 28.6%

Airlines on this route

  1. Republic Airways 74.4%
  2. United Airlines 25.6%

Oct 1, 2024 – Jul 31, 2026

By direction

CMH → IAD

Scheduled flights
1,767
Flights operated
1,745
Cancelled
22 · 1.2%
On-time departures
86.4%

IAD → CMH

Scheduled flights
1,769
Flights operated
1,750
Cancelled
19 · 1.1%
On-time departures
85.5%

CMH → IAD and IAD → CMH counted separately.

Airlines on this route

Oct 1, 2024 – Jul 31, 2026
AirlineScheduled flights Share On-time departures Cancelled
Republic Airways YX 2,630 74.4% 85.4% 35
United Airlines UA 906 25.6% 87.7% 6

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 delay06:00–07:000.5min · 601 recorded · 596 measured
Gap to highest-delay hour18.7min06:00 ↔ 19:00
Recorded flights3,536CMH–IAD

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 · No observations · 0 recorded · 0 measured · Source: the US BTS 06:00 · 91.6% · 601 recorded · 596 measured · Source: the US BTS 07:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 08:00 · 93.9% · 331 recorded · 328 measured · Source: the US BTS 09:00 · Fewer than 200 measured departures · 1 recorded · 1 measured · Source: the US BTS 10:00 · 91.1% · 330 recorded · 326 measured · Source: the US BTS 11:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 12:00 · 88.6% · 394 recorded · 394 measured · Source: the US BTS 13:00 · Fewer than 200 measured departures · 60 recorded · 60 measured · Source: the US BTS 14:00 · 80.7% · 203 recorded · 202 measured · Source: the US BTS 15:00 · 84.5% · 216 recorded · 213 measured · Source: the US BTS 16:00 · Fewer than 200 measured departures · 36 recorded · 36 measured · Source: the US BTS 17:00 · 79.1% · 382 recorded · 378 measured · Source: the US BTS 18:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 19:00 · 78.7% · 288 recorded · 281 measured · Source: the US BTS 20:00 · Fewer than 200 measured departures · 93 recorded · 91 measured · Source: the US BTS 21:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 22:00 · 82.3% · 601 recorded · 589 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 · No observations · 0 recorded · 0 measured · Source: the US BTS 06:00 · 0.5 min · 601 recorded · 596 measured · Source: the US BTS 07:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 08:00 · 0.7 min · 331 recorded · 328 measured · Source: the US BTS 09:00 · Fewer than 200 measured departures · 1 recorded · 1 measured · Source: the US BTS 10:00 · 5.3 min · 330 recorded · 326 measured · Source: the US BTS 11:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 12:00 · 3.1 min · 394 recorded · 394 measured · Source: the US BTS 13:00 · Fewer than 200 measured departures · 60 recorded · 60 measured · Source: the US BTS 14:00 · 10.2 min · 203 recorded · 202 measured · Source: the US BTS 15:00 · 11.7 min · 216 recorded · 213 measured · Source: the US BTS 16:00 · Fewer than 200 measured departures · 36 recorded · 36 measured · Source: the US BTS 17:00 · 16.9 min · 382 recorded · 378 measured · Source: the US BTS 18:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 19:00 · 19.2 min · 288 recorded · 281 measured · Source: the US BTS 20:00 · Fewer than 200 measured departures · 93 recorded · 91 measured · Source: the US BTS 21:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 22:00 · 14.9 min · 601 recorded · 589 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 · No observations · 0 recorded · 0 measured · Source: the US BTS 06:00 · 601 · 601 recorded · 596 measured · Source: the US BTS 07:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 08:00 · 331 · 331 recorded · 328 measured · Source: the US BTS 09:00 · 1 · 1 recorded · 1 measured · Source: the US BTS 10:00 · 330 · 330 recorded · 326 measured · Source: the US BTS 11:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 12:00 · 394 · 394 recorded · 394 measured · Source: the US BTS 13:00 · 60 · 60 recorded · 60 measured · Source: the US BTS 14:00 · 203 · 203 recorded · 202 measured · Source: the US BTS 15:00 · 216 · 216 recorded · 213 measured · Source: the US BTS 16:00 · 36 · 36 recorded · 36 measured · Source: the US BTS 17:00 · 382 · 382 recorded · 378 measured · Source: the US BTS 18:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 19:00 · 288 · 288 recorded · 281 measured · Source: the US BTS 20:00 · 93 · 93 recorded · 91 measured · Source: the US BTS 21:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 22:00 · 601 · 601 recorded · 589 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———
05:00No observations———
06:0091.6%0.5 min596601
07:00No observations———
08:0093.9%0.7 min328331
09:00Fewer than 200 measured departures—11
10:0091.1%5.3 min326330
11:00No observations———
12:0088.6%3.1 min394394
13:00Fewer than 200 measured departures—6060
14:0080.7%10.2 min202203
15:0084.5%11.7 min213216
16:00Fewer than 200 measured departures—3636
17:0079.1%16.9 min378382
18:00No observations———
19:0078.7%19.2 min281288
20:00Fewer than 200 measured departures—9193
21:00No observations———
22:0082.3%14.9 min589601
23:00No observations———

Day of week

On-time departures Partial coverage: only airlines that report on-time data to the US DOT
Monday · 84.9% · 536 recorded · 524 measured · Source: the US BTS Tuesday · 87.6% · 498 recorded · 492 measured · Source: the US BTS Wednesday · 86.8% · 541 recorded · 536 measured · Source: the US BTS Thursday · 87.2% · 535 recorded · 532 measured · Source: the US BTS Friday · 83.3% · 530 recorded · 527 measured · Source: the US BTS Saturday · 88.4% · 391 recorded · 389 measured · Source: the US BTS Sunday · 84.2% · 505 recorded · 495 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 · 8.0 min · 536 recorded · 524 measured · Source: the US BTS Tuesday · 4.5 min · 498 recorded · 492 measured · Source: the US BTS Wednesday · 6.8 min · 541 recorded · 536 measured · Source: the US BTS Thursday · 10.8 min · 535 recorded · 532 measured · Source: the US BTS Friday · 15.1 min · 530 recorded · 527 measured · Source: the US BTS Saturday · 4.7 min · 391 recorded · 389 measured · Source: the US BTS Sunday · 9.0 min · 505 recorded · 495 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 · 536 · 536 recorded · 524 measured · Source: the US BTS Tuesday · 498 · 498 recorded · 492 measured · Source: the US BTS Wednesday · 541 · 541 recorded · 536 measured · Source: the US BTS Thursday · 535 · 535 recorded · 532 measured · Source: the US BTS Friday · 530 · 530 recorded · 527 measured · Source: the US BTS Saturday · 391 · 391 recorded · 389 measured · Source: the US BTS Sunday · 505 · 505 recorded · 495 measured · Source: the US BTS

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View the figures
Day of weekOn-time departuresAverage departure delayWith departure timeRecorded flights
Monday84.9%8.0 min524536
Tuesday87.6%4.5 min492498
Wednesday86.8%6.8 min536541
Thursday87.2%10.8 min532535
Friday83.3%15.1 min527530
Saturday88.4%4.7 min389391
Sunday84.2%9.0 min495505

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 · 84.7% · 261 recorded · 249 measured · Source: the US BTS Feb · 85.9% · 293 recorded · 290 measured · Source: the US BTS Mar · 83.2% · 358 recorded · 356 measured · Source: the US BTS Apr · 90.9% · 452 recorded · 452 measured · Source: the US BTS May · 85.5% · 395 recorded · 392 measured · Source: the US BTS Jun · 79.0% · 316 recorded · 314 measured · Source: the US BTS Jul · Fewer than 200 measured departures · 177 recorded · 163 measured · Source: the US BTS Aug · 88.9% · 218 recorded · 217 measured · Source: the US BTS Sep · 91.2% · 272 recorded · 272 measured · Source: the US BTS Oct · 91.6% · 286 recorded · 284 measured · Source: the US BTS Nov · 91.5% · 238 recorded · 236 measured · Source: the US BTS Dec · 81.5% · 270 recorded · 270 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 · 4.6 min · 261 recorded · 249 measured · Source: the US BTS Feb · 7.0 min · 293 recorded · 290 measured · Source: the US BTS Mar · 14.9 min · 358 recorded · 356 measured · Source: the US BTS Apr · 1.0 min · 452 recorded · 452 measured · Source: the US BTS May · 8.9 min · 395 recorded · 392 measured · Source: the US BTS Jun · 21.5 min · 316 recorded · 314 measured · Source: the US BTS Jul · Fewer than 200 measured departures · 177 recorded · 163 measured · Source: the US BTS Aug · 1.8 min · 218 recorded · 217 measured · Source: the US BTS Sep · 4.0 min · 272 recorded · 272 measured · Source: the US BTS Oct · 1.7 min · 286 recorded · 284 measured · Source: the US BTS Nov · 4.0 min · 238 recorded · 236 measured · Source: the US BTS Dec · 8.5 min · 270 recorded · 270 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 · 261 · 261 recorded · 249 measured · Source: the US BTS Feb · 293 · 293 recorded · 290 measured · Source: the US BTS Mar · 358 · 358 recorded · 356 measured · Source: the US BTS Apr · 452 · 452 recorded · 452 measured · Source: the US BTS May · 395 · 395 recorded · 392 measured · Source: the US BTS Jun · 316 · 316 recorded · 314 measured · Source: the US BTS Jul · 177 · 177 recorded · 163 measured · Source: the US BTS Aug · 218 · 218 recorded · 217 measured · Source: the US BTS Sep · 272 · 272 recorded · 272 measured · Source: the US BTS Oct · 286 · 286 recorded · 284 measured · Source: the US BTS Nov · 238 · 238 recorded · 236 measured · Source: the US BTS Dec · 270 · 270 recorded · 270 measured · Source: the US BTS

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View the figures
Month of yearOn-time departuresAverage departure delayWith departure timeRecorded flights
Jan84.7%4.6 min249261
Feb85.9%7.0 min290293
Mar83.2%14.9 min356358
Apr90.9%1.0 min452452
May85.5%8.9 min392395
Jun79.0%21.5 min314316
JulFewer than 200 measured departures—163177
Aug88.9%1.8 min217218
Sep91.2%4.0 min272272
Oct91.6%1.7 min284286
Nov91.5%4.0 min236238
Dec81.5%8.5 min270270

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 85.0% 3,005
  • Delayed >15 min 13.9% 490
  • Cancelled 1.2% 41
  • 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

22
22 of 22
Flight numbersBy direction DeparturesOn time
YX3430 CMH → IAD 570 92.0%
YX3646 IAD → CMH 569 82.9%
YX3428 CMH → IAD 251 80.6%
YX3566 IAD → CMH 231 75.9%
YX3546 CMH → IAD 230 78.8%
YX3516 IAD → CMH 165 86.1%
YX3662 CMH → IAD 99 92.9%
YX3406 IAD → CMH 66 93.8%
UA2691 IAD → CMH 60 96.7%
UA1102 IAD → CMH 53 80.8%
UA310 CMH → IAD 53 84.6%
UA1548 IAD → CMH 52 92.3%
UA445 CMH → IAD 52 92.2%
UA1695 CMH → IAD 41 80.5%
UA773 IAD → CMH 41 95.1%
UA312 CMH → IAD 36 91.7%
UA1257 IAD → CMH 35 100.0%
UA768 CMH → IAD 35 94.3%
YX3624 IAD → CMH 35 80.0%
YX3656 IAD → CMH 33 90.9%
YX3480 CMH → IAD 32 93.8%
YX3503 IAD → CMH 32 100.0%

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 7 −95.5% 0 85.7%
June 2026 90 −59.8% 0 80.0%
May 2026 136 −46.9% 1 85.3%
April 2026 170 −39.7% 0 94.1%
March 2026 231 +84.8% 2 82.3%
February 2026 205 +141.2% 3 85.4%
January 2026 150 +51.5% 9 88.7%
December 2025 151 +26.9% 0 78.1%
November 2025 118 +0.0% 2 94.1%
October 2025 194 +115.6% 0 89.2%
September 2025 272 0 91.2%
August 2025 217 1 88.9%
July 2025 156 14 71.8%
June 2025 224 2 78.6%
May 2025 256 2 85.5%
April 2025 282 0 89.0%
March 2025 125 0 84.8%
February 2025 85 0 87.1%
January 2025 99 3 78.8%
December 2024 119 0 85.7%
November 2024 118 0 89.0%
October 2024 90 2 96.7%

How to read this chart

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