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847 km · Domestic

Chicago O'Hare (ORD) – Frederick Douglass Greater Rochester (ROC)

In July 2026, 416 flights operated between Chicago O'Hare and Frederick Douglass Greater Rochester (both directions), and 79.3% 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
January252302▲ 19.8%
February254318▲ 25.2%
March325303▼ 6.8%
April365427▲ 17.0%
May361438▲ 21.3%
June344409▲ 18.9%
July397416▲ 4.8%
August372––
September405––
October378–in progress
November435––
December374––
Year to date (Jan–Jul)2,2982,613▲ 13.7%

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
January84.9%74.5%▼ 12.2%
February80.3%76.4%▼ 4.9%
March83.7%80.2%▼ 4.2%
April88.8%79.9%▼ 10.0%
May88.6%83.6%▼ 5.6%
June82.8%78.2%▼ 5.6%
July75.1%79.3%▲ 5.6%
August82.0%––
September85.9%––
October81.5%–in progress
November80.5%––
December72.2%––
Year-to-date average (Jan–Jul)83.5%78.9%▼ 5.5%

Cancelled flights by month

The most recent periods19 periods
PeriodCancelled flights 2025Cancelled flights 2026Change vs last year
January214▲ 600.0%
February32▼ 33.3%
March29▲ 350.0%
April915▲ 66.7%
May26▲ 200.0%
June311▲ 266.7%
July517▲ 240.0%
August10––
September2––
October0–in progress
November15––
December13––
Year to date (Jan–Jul)2674▲ 184.6%

Airlines on this route

  1. Envoy Air 41.4%
  2. United Airlines 25.5%
  3. Republic Airways 25.3%
  4. SkyWest Airlines 7.7%

Oct 1, 2024 – Jul 31, 2026

By direction

ORD → ROC

Scheduled flights
3,814
Flights operated
3,743
Cancelled
71 · 1.9%
On-time departures
80.5%

ROC → ORD

Scheduled flights
3,948
Flights operated
3,877
Cancelled
71 · 1.8%
On-time departures
82.5%

ORD → ROC and ROC → ORD counted separately.

Airlines on this route

Oct 1, 2024 – Jul 31, 2026
AirlineScheduled flights Share On-time departures Cancelled
Envoy Air MQ 3,216 41.4% 83.3% 54
United Airlines UA 1,983 25.5% 78.1% 22
Republic Airways YX 1,963 25.3% 85.1% 38
SkyWest Airlines OO 600 7.7% 71.2% 28

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 delay07:00–08:001.9min · 409 recorded · 406 measured
Gap to highest-delay hour29.0min07:00 ↔ 17:00
Recorded flights7,762ORD–ROC

Departure hour

On-time departures Partial coverage: only airlines that report on-time data to the US DOT
00:00 · Fewer than 200 measured departures · 2 recorded · 2 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 · 106 recorded · 105 measured · Source: the US BTS 06:00 · 89.0% · 977 recorded · 968 measured · Source: the US BTS 07:00 · 93.4% · 409 recorded · 406 measured · Source: the US BTS 08:00 · 89.2% · 580 recorded · 575 measured · Source: the US BTS 09:00 · Fewer than 200 measured departures · 36 recorded · 36 measured · Source: the US BTS 10:00 · 88.8% · 477 recorded · 473 measured · Source: the US BTS 11:00 · 83.9% · 792 recorded · 783 measured · Source: the US BTS 12:00 · Fewer than 200 measured departures · 124 recorded · 120 measured · Source: the US BTS 13:00 · 82.0% · 804 recorded · 789 measured · Source: the US BTS 14:00 · 79.4% · 378 recorded · 373 measured · Source: the US BTS 15:00 · 81.4% · 467 recorded · 458 measured · Source: the US BTS 16:00 · Fewer than 200 measured departures · 134 recorded · 127 measured · Source: the US BTS 17:00 · 69.8% · 709 recorded · 693 measured · Source: the US BTS 18:00 · 74.1% · 1,024 recorded · 1,002 measured · Source: the US BTS 19:00 · Fewer than 200 measured departures · 197 recorded · 188 measured · Source: the US BTS 20:00 · 70.1% · 366 recorded · 351 measured · Source: the US BTS 21:00 · Fewer than 200 measured departures · 178 recorded · 169 measured · Source: the US BTS 22:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 23:00 · Fewer than 200 measured departures · 2 recorded · 2 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 · Fewer than 200 measured departures · 2 recorded · 2 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 · 106 recorded · 105 measured · Source: the US BTS 06:00 · 5.2 min · 977 recorded · 968 measured · Source: the US BTS 07:00 · 1.9 min · 409 recorded · 406 measured · Source: the US BTS 08:00 · 3.6 min · 580 recorded · 575 measured · Source: the US BTS 09:00 · Fewer than 200 measured departures · 36 recorded · 36 measured · Source: the US BTS 10:00 · 6.9 min · 477 recorded · 473 measured · Source: the US BTS 11:00 · 9.5 min · 792 recorded · 783 measured · Source: the US BTS 12:00 · Fewer than 200 measured departures · 124 recorded · 120 measured · Source: the US BTS 13:00 · 12.2 min · 804 recorded · 789 measured · Source: the US BTS 14:00 · 13.7 min · 378 recorded · 373 measured · Source: the US BTS 15:00 · 9.3 min · 467 recorded · 458 measured · Source: the US BTS 16:00 · Fewer than 200 measured departures · 134 recorded · 127 measured · Source: the US BTS 17:00 · 30.9 min · 709 recorded · 693 measured · Source: the US BTS 18:00 · 18.7 min · 1,024 recorded · 1,002 measured · Source: the US BTS 19:00 · Fewer than 200 measured departures · 197 recorded · 188 measured · Source: the US BTS 20:00 · 19.4 min · 366 recorded · 351 measured · Source: the US BTS 21:00 · Fewer than 200 measured departures · 178 recorded · 169 measured · Source: the US BTS 22:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 23:00 · Fewer than 200 measured departures · 2 recorded · 2 measured · Source: the US BTS

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Recorded flights Partial coverage: only airlines that report on-time data to the US DOT
00:00 · 2 · 2 recorded · 2 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 · 106 · 106 recorded · 105 measured · Source: the US BTS 06:00 · 977 · 977 recorded · 968 measured · Source: the US BTS 07:00 · 409 · 409 recorded · 406 measured · Source: the US BTS 08:00 · 580 · 580 recorded · 575 measured · Source: the US BTS 09:00 · 36 · 36 recorded · 36 measured · Source: the US BTS 10:00 · 477 · 477 recorded · 473 measured · Source: the US BTS 11:00 · 792 · 792 recorded · 783 measured · Source: the US BTS 12:00 · 124 · 124 recorded · 120 measured · Source: the US BTS 13:00 · 804 · 804 recorded · 789 measured · Source: the US BTS 14:00 · 378 · 378 recorded · 373 measured · Source: the US BTS 15:00 · 467 · 467 recorded · 458 measured · Source: the US BTS 16:00 · 134 · 134 recorded · 127 measured · Source: the US BTS 17:00 · 709 · 709 recorded · 693 measured · Source: the US BTS 18:00 · 1,024 · 1,024 recorded · 1,002 measured · Source: the US BTS 19:00 · 197 · 197 recorded · 188 measured · Source: the US BTS 20:00 · 366 · 366 recorded · 351 measured · Source: the US BTS 21:00 · 178 · 178 recorded · 169 measured · Source: the US BTS 22:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 23:00 · 2 · 2 recorded · 2 measured · Source: the US BTS

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View the figures
Departure hourOn-time departuresAverage departure delayWith departure timeRecorded flights
00:00Fewer than 200 measured departures—22
01:00No observations———
02:00No observations———
03:00No observations———
04:00No observations———
05:00Fewer than 200 measured departures—105106
06:0089.0%5.2 min968977
07:0093.4%1.9 min406409
08:0089.2%3.6 min575580
09:00Fewer than 200 measured departures—3636
10:0088.8%6.9 min473477
11:0083.9%9.5 min783792
12:00Fewer than 200 measured departures—120124
13:0082.0%12.2 min789804
14:0079.4%13.7 min373378
15:0081.4%9.3 min458467
16:00Fewer than 200 measured departures—127134
17:0069.8%30.9 min693709
18:0074.1%18.7 min1,0021,024
19:00Fewer than 200 measured departures—188197
20:0070.1%19.4 min351366
21:00Fewer than 200 measured departures—169178
22:00No observations———
23:00Fewer than 200 measured departures—22

Day of week

On-time departures Partial coverage: only airlines that report on-time data to the US DOT
Monday · 82.2% · 1,168 recorded · 1,132 measured · Source: the US BTS Tuesday · 84.0% · 1,097 recorded · 1,090 measured · Source: the US BTS Wednesday · 81.6% · 1,106 recorded · 1,084 measured · Source: the US BTS Thursday · 83.3% · 1,140 recorded · 1,121 measured · Source: the US BTS Friday · 81.7% · 1,138 recorded · 1,124 measured · Source: the US BTS Saturday · 82.2% · 976 recorded · 960 measured · Source: the US BTS Sunday · 75.6% · 1,137 recorded · 1,109 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
Monday · 11.5 min · 1,168 recorded · 1,132 measured · Source: the US BTS Tuesday · 10.1 min · 1,097 recorded · 1,090 measured · Source: the US BTS Wednesday · 12.4 min · 1,106 recorded · 1,084 measured · Source: the US BTS Thursday · 11.4 min · 1,140 recorded · 1,121 measured · Source: the US BTS Friday · 12.8 min · 1,138 recorded · 1,124 measured · Source: the US BTS Saturday · 10.6 min · 976 recorded · 960 measured · Source: the US BTS Sunday · 17.7 min · 1,137 recorded · 1,109 measured · Source: the US BTS

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Recorded flights Partial coverage: only airlines that report on-time data to the US DOT
Monday · 1,168 · 1,168 recorded · 1,132 measured · Source: the US BTS Tuesday · 1,097 · 1,097 recorded · 1,090 measured · Source: the US BTS Wednesday · 1,106 · 1,106 recorded · 1,084 measured · Source: the US BTS Thursday · 1,140 · 1,140 recorded · 1,121 measured · Source: the US BTS Friday · 1,138 · 1,138 recorded · 1,124 measured · Source: the US BTS Saturday · 976 · 976 recorded · 960 measured · Source: the US BTS Sunday · 1,137 · 1,137 recorded · 1,109 measured · Source: the US BTS

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View the figures
Day of weekOn-time departuresAverage departure delayWith departure timeRecorded flights
Monday82.2%11.5 min1,1321,168
Tuesday84.0%10.1 min1,0901,097
Wednesday81.6%12.4 min1,0841,106
Thursday83.3%11.4 min1,1211,140
Friday81.7%12.8 min1,1241,138
Saturday82.2%10.6 min960976
Sunday75.6%17.7 min1,1091,137

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 · 79.2% · 570 recorded · 554 measured · Source: the US BTS Feb · 78.2% · 577 recorded · 572 measured · Source: the US BTS Mar · 82.0% · 639 recorded · 628 measured · Source: the US BTS Apr · 84.0% · 816 recorded · 792 measured · Source: the US BTS May · 85.9% · 807 recorded · 799 measured · Source: the US BTS Jun · 80.4% · 767 recorded · 753 measured · Source: the US BTS Jul · 77.2% · 835 recorded · 813 measured · Source: the US BTS Aug · 82.0% · 382 recorded · 372 measured · Source: the US BTS Sep · 85.9% · 407 recorded · 405 measured · Source: the US BTS Oct · 84.2% · 556 recorded · 556 measured · Source: the US BTS Nov · 83.3% · 715 recorded · 700 measured · Source: the US BTS Dec · 77.1% · 691 recorded · 676 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 · 15.5 min · 570 recorded · 554 measured · Source: the US BTS Feb · 12.8 min · 577 recorded · 572 measured · Source: the US BTS Mar · 14.0 min · 639 recorded · 628 measured · Source: the US BTS Apr · 11.8 min · 816 recorded · 792 measured · Source: the US BTS May · 7.8 min · 807 recorded · 799 measured · Source: the US BTS Jun · 13.9 min · 767 recorded · 753 measured · Source: the US BTS Jul · 18.6 min · 835 recorded · 813 measured · Source: the US BTS Aug · 12.1 min · 382 recorded · 372 measured · Source: the US BTS Sep · 6.5 min · 407 recorded · 405 measured · Source: the US BTS Oct · 6.8 min · 556 recorded · 556 measured · Source: the US BTS Nov · 10.9 min · 715 recorded · 700 measured · Source: the US BTS Dec · 14.9 min · 691 recorded · 676 measured · Source: the US BTS

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Recorded flights Partial coverage: only airlines that report on-time data to the US DOT
Jan · 570 · 570 recorded · 554 measured · Source: the US BTS Feb · 577 · 577 recorded · 572 measured · Source: the US BTS Mar · 639 · 639 recorded · 628 measured · Source: the US BTS Apr · 816 · 816 recorded · 792 measured · Source: the US BTS May · 807 · 807 recorded · 799 measured · Source: the US BTS Jun · 767 · 767 recorded · 753 measured · Source: the US BTS Jul · 835 · 835 recorded · 813 measured · Source: the US BTS Aug · 382 · 382 recorded · 372 measured · Source: the US BTS Sep · 407 · 407 recorded · 405 measured · Source: the US BTS Oct · 556 · 556 recorded · 556 measured · Source: the US BTS Nov · 715 · 715 recorded · 700 measured · Source: the US BTS Dec · 691 · 691 recorded · 676 measured · Source: the US BTS

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View the figures
Month of yearOn-time departuresAverage departure delayWith departure timeRecorded flights
Jan79.2%15.5 min554570
Feb78.2%12.8 min572577
Mar82.0%14.0 min628639
Apr84.0%11.8 min792816
May85.9%7.8 min799807
Jun80.4%13.9 min753767
Jul77.2%18.6 min813835
Aug82.0%12.1 min372382
Sep85.9%6.5 min405407
Oct84.2%6.8 min556556
Nov83.3%10.9 min700715
Dec77.1%14.9 min676691

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 80.0% 6,210
  • Delayed >15 min 18.2% 1,410
  • Cancelled 1.8% 142
  • 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

82
82 of 82
Flight numbersBy direction DeparturesOn time
UA1568 ORD → ROC 427 73.1%
UA2483 ROC → ORD 286 89.7%
MQ4104 ORD → ROC 283 91.5%
UA1239 ORD → ROC 258 73.6%
MQ4104 ROC → ORD 201 88.0%
MQ3765 ORD → ROC 196 81.4%
MQ3830 ORD → ROC 141 86.3%
UA1612 ROC → ORD 141 70.0%
YX3507 ORD → ROC 135 86.6%
UA2008 ROC → ORD 134 87.1%
MQ4247 ROC → ORD 133 97.7%
MQ3830 ROC → ORD 132 79.2%
MQ4219 ORD → ROC 131 65.9%
MQ3766 ROC → ORD 125 91.8%
MQ3582 ROC → ORD 106 72.6%
MQ3582 ORD → ROC 102 74.8%
UA2059 ROC → ORD 102 58.0%
MQ3662 ROC → ORD 99 92.9%
MQ3663 ORD → ROC 99 73.2%
YX3627 ROC → ORD 99 77.8%
YX3537 ORD → ROC 92 92.3%
YX3710 ROC → ORD 91 82.2%
OO5919 ORD → ROC 90 87.6%
YX4441 ROC → ORD 90 94.4%
OO5574 ORD → ROC 88 64.3%
YX3694 ORD → ROC 86 89.4%
MQ3775 ORD → ROC 72 87.5%
MQ3775 ROC → ORD 72 91.4%
OO6438 ROC → ORD 72 55.2%
OO6438 ORD → ROC 72 60.9%
YX3629 ORD → ROC 72 88.7%
YX3494 ROC → ORD 71 88.2%
YX4680 ORD → ROC 65 69.4%
MQ3363 ORD → ROC 62 80.3%
MQ3363 ROC → ORD 60 67.2%
YX4680 ROC → ORD 60 63.6%
YX4434 ORD → ROC 59 86.4%
UA1400 ORD → ROC 58 79.3%
YX3672 ROC → ORD 58 89.5%
OO5633 ROC → ORD 57 46.3%
MQ4325 ORD → ROC 56 85.2%
UA545 ROC → ORD 54 70.4%
UA2154 ORD → ROC 53 50.0%
YX3458 ROC → ORD 53 88.5%
UA1693 ORD → ROC 52 90.4%
UA1729 ROC → ORD 51 88.2%
YX3647 ROC → ORD 48 80.9%
YX3619 ROC → ORD 45 95.6%
MQ3471 ROC → ORD 44 93.2%
MQ3823 ROC → ORD 44 77.3%
MQ3823 ORD → ROC 44 77.3%
MQ3873 ORD → ROC 44 76.2%
MQ3820 ORD → ROC 41 87.8%
MQ3825 ROC → ORD 41 80.5%
YX4643 ORD → ROC 40 67.6%
MQ3409 ROC → ORD 38 68.4%
YX3421 ORD → ROC 38 89.5%
YX3563 ROC → ORD 38 86.8%
UA1778 ROC → ORD 37 88.9%
UA2458 ROC → ORD 37 97.3%
YX4639 ORD → ROC 37 74.3%
MQ3984 ORD → ROC 36 77.8%
MQ3984 ROC → ORD 36 80.0%
UA1430 ORD → ROC 36 94.4%
UA777 ROC → ORD 36 57.1%
YX3696 ROC → ORD 36 72.7%
YX4638 ROC → ORD 36 88.9%
MQ3765 ROC → ORD 35 81.8%
UA764 ROC → ORD 34 91.2%
OO5443 ROC → ORD 33 90.9%
MQ3543 ORD → ROC 32 81.3%
MQ4002 ROC → ORD 32 74.2%
OO5761 ROC → ORD 32 56.7%
MQ3925 ORD → ROC 31 93.6%
MQ3925 ROC → ORD 31 90.3%
YX3477 ORD → ROC 31 86.7%
MQ3424 ROC → ORD 30 96.7%
MQ3445 ROC → ORD 30 86.2%
MQ3451 ORD → ROC 30 93.3%
MQ4193 ROC → ORD 30 88.5%
YX3502 ORD → ROC 30 93.1%
YX3689 ROC → ORD 30 86.2%

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 416 +4.8% 17 79.3%
June 2026 409 +18.9% 11 78.2%
May 2026 438 +21.3% 6 83.6%
April 2026 427 +17.0% 15 79.9%
March 2026 303 −6.8% 9 80.2%
February 2026 318 +25.2% 2 76.4%
January 2026 302 +19.8% 14 74.5%
December 2025 374 +23.8% 13 72.2%
November 2025 435 +64.2% 15 80.5%
October 2025 378 +112.4% 0 81.5%
September 2025 405 2 85.9%
August 2025 372 10 82.0%
July 2025 397 5 75.1%
June 2025 344 3 82.8%
May 2025 361 2 88.6%
April 2025 365 9 88.8%
March 2025 325 2 83.7%
February 2025 254 3 80.3%
January 2025 252 2 84.9%
December 2024 302 2 83.1%
November 2024 265 0 87.9%
October 2024 178 0 89.9%

How to read this chart

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