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521 km · Domestic

Blue Grass (LEX) – Chicago O'Hare (ORD)

In July 2026, 237 flights operated between Blue Grass and Chicago O'Hare (both directions), and 72.6% 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
January106168▲ 58.5%
February102173▲ 69.6%
March111234▲ 110.8%
April256349▲ 36.3%
May260257▼ 1.2%
June298184▼ 38.3%
July297237▼ 20.2%
August337––
September408––
October457–in progress
November270––
December236––
Year to date (Jan–Jul)1,4301,602▲ 12.0%

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
January83.0%77.4%▼ 6.7%
February80.4%78.6%▼ 2.2%
March82.0%76.9%▼ 6.2%
April87.1%80.2%▼ 7.9%
May82.3%80.5%▼ 2.2%
June63.1%66.8%▲ 5.9%
July63.3%72.6%▲ 14.7%
August71.2%––
September83.8%––
October75.9%–in progress
November78.5%––
December63.1%––
Year-to-date average (Jan–Jul)77.3%76.1%▼ 1.5%

Cancelled flights by month

The most recent periods19 periods
PeriodCancelled flights 2025Cancelled flights 2026Change vs last year
January411▲ 175.0%
February00–
March07–
April415▲ 275.0%
May410▲ 150.0%
June09–
July719▲ 171.4%
August12––
September4––
October0–in progress
November15––
December7––
Year to date (Jan–Jul)1971▲ 273.7%

Airlines on this route

  1. SkyWest Airlines 77.8%
  2. Envoy Air 18.7%
  3. Republic Airways 2.6%
  4. PSA Airlines 0.8%

Oct 1, 2024 – Jul 31, 2026

By direction

LEX → ORD

Scheduled flights
2,727
Flights operated
2,663
Cancelled
64 · 2.3%
On-time departures
79.2%

ORD → LEX

Scheduled flights
2,726
Flights operated
2,662
Cancelled
64 · 2.3%
On-time departures
75.3%

LEX → ORD and ORD → LEX counted separately.

Airlines on this route

Oct 1, 2024 – Jul 31, 2026
AirlineScheduled flights Share On-time departures Cancelled
SkyWest Airlines OO 4,245 77.8% 76.0% 115
Envoy Air MQ 1,018 18.7% 79.8% 13
Republic Airways YX 144 2.6% 93.1% 0
PSA Airlines OH 46 0.8% 82.6% 0

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 delay07:00–08:005.7min · 456 recorded · 449 measured
Gap to highest-delay hour30.9min07:00 ↔ 20:00
Recorded flights5,453LEX–ORD

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 · 89 recorded · 86 measured · Source: the US BTS 06:00 · 88.5% · 404 recorded · 399 measured · Source: the US BTS 07:00 · 90.9% · 456 recorded · 449 measured · Source: the US BTS 08:00 · 79.3% · 407 recorded · 400 measured · Source: the US BTS 09:00 · Fewer than 200 measured departures · 64 recorded · 64 measured · Source: the US BTS 10:00 · 85.6% · 313 recorded · 312 measured · Source: the US BTS 11:00 · 75.5% · 427 recorded · 420 measured · Source: the US BTS 12:00 · Fewer than 200 measured departures · 64 recorded · 64 measured · Source: the US BTS 13:00 · 78.2% · 336 recorded · 330 measured · Source: the US BTS 14:00 · 80.8% · 566 recorded · 557 measured · Source: the US BTS 15:00 · 63.2% · 266 recorded · 258 measured · Source: the US BTS 16:00 · Fewer than 200 measured departures · 172 recorded · 165 measured · Source: the US BTS 17:00 · 74.6% · 544 recorded · 528 measured · Source: the US BTS 18:00 · 69.7% · 477 recorded · 459 measured · Source: the US BTS 19:00 · 70.4% · 260 recorded · 250 measured · Source: the US BTS 20:00 · 67.2% · 377 recorded · 369 measured · Source: the US BTS 21:00 · Fewer than 200 measured departures · 185 recorded · 175 measured · Source: the US BTS 22:00 · Fewer than 200 measured departures · 44 recorded · 38 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 · 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 · 89 recorded · 86 measured · Source: the US BTS 06:00 · 7.6 min · 404 recorded · 399 measured · Source: the US BTS 07:00 · 5.7 min · 456 recorded · 449 measured · Source: the US BTS 08:00 · 17.3 min · 407 recorded · 400 measured · Source: the US BTS 09:00 · Fewer than 200 measured departures · 64 recorded · 64 measured · Source: the US BTS 10:00 · 9.0 min · 313 recorded · 312 measured · Source: the US BTS 11:00 · 18.5 min · 427 recorded · 420 measured · Source: the US BTS 12:00 · Fewer than 200 measured departures · 64 recorded · 64 measured · Source: the US BTS 13:00 · 11.8 min · 336 recorded · 330 measured · Source: the US BTS 14:00 · 11.1 min · 566 recorded · 557 measured · Source: the US BTS 15:00 · 32.5 min · 266 recorded · 258 measured · Source: the US BTS 16:00 · Fewer than 200 measured departures · 172 recorded · 165 measured · Source: the US BTS 17:00 · 20.5 min · 544 recorded · 528 measured · Source: the US BTS 18:00 · 27.7 min · 477 recorded · 459 measured · Source: the US BTS 19:00 · 20.8 min · 260 recorded · 250 measured · Source: the US BTS 20:00 · 36.6 min · 377 recorded · 369 measured · Source: the US BTS 21:00 · Fewer than 200 measured departures · 185 recorded · 175 measured · Source: the US BTS 22:00 · Fewer than 200 measured departures · 44 recorded · 38 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.

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 · 89 · 89 recorded · 86 measured · Source: the US BTS 06:00 · 404 · 404 recorded · 399 measured · Source: the US BTS 07:00 · 456 · 456 recorded · 449 measured · Source: the US BTS 08:00 · 407 · 407 recorded · 400 measured · Source: the US BTS 09:00 · 64 · 64 recorded · 64 measured · Source: the US BTS 10:00 · 313 · 313 recorded · 312 measured · Source: the US BTS 11:00 · 427 · 427 recorded · 420 measured · Source: the US BTS 12:00 · 64 · 64 recorded · 64 measured · Source: the US BTS 13:00 · 336 · 336 recorded · 330 measured · Source: the US BTS 14:00 · 566 · 566 recorded · 557 measured · Source: the US BTS 15:00 · 266 · 266 recorded · 258 measured · Source: the US BTS 16:00 · 172 · 172 recorded · 165 measured · Source: the US BTS 17:00 · 544 · 544 recorded · 528 measured · Source: the US BTS 18:00 · 477 · 477 recorded · 459 measured · Source: the US BTS 19:00 · 260 · 260 recorded · 250 measured · Source: the US BTS 20:00 · 377 · 377 recorded · 369 measured · Source: the US BTS 21:00 · 185 · 185 recorded · 175 measured · Source: the US BTS 22:00 · 44 · 44 recorded · 38 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
00:00No observations———
01:00No observations———
02:00No observations———
03:00No observations———
04:00No observations———
05:00Fewer than 200 measured departures—8689
06:0088.5%7.6 min399404
07:0090.9%5.7 min449456
08:0079.3%17.3 min400407
09:00Fewer than 200 measured departures—6464
10:0085.6%9.0 min312313
11:0075.5%18.5 min420427
12:00Fewer than 200 measured departures—6464
13:0078.2%11.8 min330336
14:0080.8%11.1 min557566
15:0063.2%32.5 min258266
16:00Fewer than 200 measured departures—165172
17:0074.6%20.5 min528544
18:0069.7%27.7 min459477
19:0070.4%20.8 min250260
20:0067.2%36.6 min369377
21:00Fewer than 200 measured departures—175185
22:00Fewer than 200 measured departures—3844
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 · 77.2% · 805 recorded · 771 measured · Source: the US BTS Tuesday · 81.3% · 792 recorded · 782 measured · Source: the US BTS Wednesday · 80.2% · 792 recorded · 783 measured · Source: the US BTS Thursday · 76.7% · 788 recorded · 772 measured · Source: the US BTS Friday · 74.7% · 796 recorded · 782 measured · Source: the US BTS Saturday · 77.1% · 680 recorded · 654 measured · Source: the US BTS Sunday · 73.6% · 800 recorded · 781 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 · 21.0 min · 805 recorded · 771 measured · Source: the US BTS Tuesday · 14.0 min · 792 recorded · 782 measured · Source: the US BTS Wednesday · 13.6 min · 792 recorded · 783 measured · Source: the US BTS Thursday · 19.1 min · 788 recorded · 772 measured · Source: the US BTS Friday · 19.7 min · 796 recorded · 782 measured · Source: the US BTS Saturday · 15.9 min · 680 recorded · 654 measured · Source: the US BTS Sunday · 25.8 min · 800 recorded · 781 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 · 805 · 805 recorded · 771 measured · Source: the US BTS Tuesday · 792 · 792 recorded · 782 measured · Source: the US BTS Wednesday · 792 · 792 recorded · 783 measured · Source: the US BTS Thursday · 788 · 788 recorded · 772 measured · Source: the US BTS Friday · 796 · 796 recorded · 782 measured · Source: the US BTS Saturday · 680 · 680 recorded · 654 measured · Source: the US BTS Sunday · 800 · 800 recorded · 781 measured · Source: the US BTS

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View the figures
Day of weekOn-time departuresAverage departure delayWith departure timeRecorded flights
Monday77.2%21.0 min771805
Tuesday81.3%14.0 min782792
Wednesday80.2%13.6 min783792
Thursday76.7%19.1 min772788
Friday74.7%19.7 min782796
Saturday77.1%15.9 min654680
Sunday73.6%25.8 min781800

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 · 79.6% · 289 recorded · 274 measured · Source: the US BTS Feb · 79.3% · 275 recorded · 275 measured · Source: the US BTS Mar · 78.6% · 352 recorded · 345 measured · Source: the US BTS Apr · 83.1% · 624 recorded · 605 measured · Source: the US BTS May · 81.4% · 531 recorded · 517 measured · Source: the US BTS Jun · 64.5% · 491 recorded · 482 measured · Source: the US BTS Jul · 67.4% · 560 recorded · 534 measured · Source: the US BTS Aug · 71.2% · 349 recorded · 337 measured · Source: the US BTS Sep · 83.8% · 412 recorded · 408 measured · Source: the US BTS Oct · 79.1% · 587 recorded · 587 measured · Source: the US BTS Nov · 85.0% · 554 recorded · 539 measured · Source: the US BTS Dec · 73.0% · 429 recorded · 422 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 · 27.1 min · 289 recorded · 274 measured · Source: the US BTS Feb · 9.8 min · 275 recorded · 275 measured · Source: the US BTS Mar · 16.6 min · 352 recorded · 345 measured · Source: the US BTS Apr · 9.7 min · 624 recorded · 605 measured · Source: the US BTS May · 11.5 min · 531 recorded · 517 measured · Source: the US BTS Jun · 39.1 min · 491 recorded · 482 measured · Source: the US BTS Jul · 28.1 min · 560 recorded · 534 measured · Source: the US BTS Aug · 34.0 min · 349 recorded · 337 measured · Source: the US BTS Sep · 9.9 min · 412 recorded · 408 measured · Source: the US BTS Oct · 12.2 min · 587 recorded · 587 measured · Source: the US BTS Nov · 7.7 min · 554 recorded · 539 measured · Source: the US BTS Dec · 24.1 min · 429 recorded · 422 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 · 289 · 289 recorded · 274 measured · Source: the US BTS Feb · 275 · 275 recorded · 275 measured · Source: the US BTS Mar · 352 · 352 recorded · 345 measured · Source: the US BTS Apr · 624 · 624 recorded · 605 measured · Source: the US BTS May · 531 · 531 recorded · 517 measured · Source: the US BTS Jun · 491 · 491 recorded · 482 measured · Source: the US BTS Jul · 560 · 560 recorded · 534 measured · Source: the US BTS Aug · 349 · 349 recorded · 337 measured · Source: the US BTS Sep · 412 · 412 recorded · 408 measured · Source: the US BTS Oct · 587 · 587 recorded · 587 measured · Source: the US BTS Nov · 554 · 554 recorded · 539 measured · Source: the US BTS Dec · 429 · 429 recorded · 422 measured · Source: the US BTS

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View the figures
Month of yearOn-time departuresAverage departure delayWith departure timeRecorded flights
Jan79.6%27.1 min274289
Feb79.3%9.8 min275275
Mar78.6%16.6 min345352
Apr83.1%9.7 min605624
May81.4%11.5 min517531
Jun64.5%39.1 min482491
Jul67.4%28.1 min534560
Aug71.2%34.0 min337349
Sep83.8%9.9 min408412
Oct79.1%12.2 min587587
Nov85.0%7.7 min539554
Dec73.0%24.1 min422429

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 75.4% 4,114
  • Delayed >15 min 22.2% 1,211
  • Cancelled 2.3% 128
  • 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

64
64 of 64
Flight numbersBy direction DeparturesOn time
OO5376 ORD → LEX 425 80.8%
OO5871 LEX → ORD 419 77.0%
OO5624 ORD → LEX 289 81.0%
OO5633 LEX → ORD 252 91.5%
OO4976 LEX → ORD 167 84.1%
OO6498 ORD → LEX 157 52.7%
MQ4268 ORD → LEX 147 76.7%
MQ3874 ORD → LEX 100 74.8%
MQ4276 LEX → ORD 97 93.8%
MQ4268 LEX → ORD 91 71.1%
MQ3933 LEX → ORD 88 89.7%
OO6244 ORD → LEX 72 77.8%
OO6244 LEX → ORD 72 73.2%
OO6245 ORD → LEX 72 62.7%
OO6245 LEX → ORD 72 58.5%
OO5288 LEX → ORD 68 88.1%
OO5307 LEX → ORD 68 79.1%
OO5464 ORD → LEX 68 76.5%
OO5478 ORD → LEX 68 85.1%
OO5445 LEX → ORD 67 91.0%
OO5613 ORD → LEX 67 91.0%
OO4974 ORD → LEX 62 79.0%
OO4974 LEX → ORD 62 66.1%
OO6314 ORD → LEX 62 37.7%
OO6314 LEX → ORD 60 33.3%
OO6452 LEX → ORD 55 55.1%
MQ3689 ORD → LEX 54 88.9%
MQ3689 LEX → ORD 54 83.3%
OO5640 ORD → LEX 50 84.0%
OO5657 LEX → ORD 49 78.7%
OO5002 ORD → LEX 46 59.1%
OO4958 ORD → LEX 44 75.6%
OO6298 ORD → LEX 44 62.8%
OO6298 LEX → ORD 44 66.7%
OO6188 LEX → ORD 43 92.7%
OO6365 LEX → ORD 42 74.4%
OO6365 ORD → LEX 41 81.1%
OO5287 ORD → LEX 37 76.5%
OO5538 LEX → ORD 36 91.7%
YX3400 LEX → ORD 36 88.9%
YX3485 ORD → LEX 36 97.2%
YX3664 LEX → ORD 36 88.9%
OO5740 LEX → ORD 35 82.9%
OO5939 ORD → LEX 35 80.0%
YX3663 ORD → LEX 35 97.1%
OO6377 ORD → LEX 33 72.7%
MQ3944 ORD → LEX 32 76.7%
MQ3944 LEX → ORD 32 83.3%
OO4992 ORD → LEX 32 64.5%
MQ3632 ORD → LEX 31 90.3%
MQ3917 LEX → ORD 31 90.3%
OO4991 ORD → LEX 31 96.8%
OO4991 LEX → ORD 31 93.6%
OO4994 LEX → ORD 31 70.0%
OO6360 ORD → LEX 31 73.3%
OO6440 LEX → ORD 31 77.4%
MQ4201 ORD → LEX 30 73.3%
MQ4236 LEX → ORD 30 75.9%
OO4971 ORD → LEX 30 83.3%
OO4989 ORD → LEX 30 59.3%
OO6268 LEX → ORD 30 90.0%
OO6285 ORD → LEX 30 70.0%
OO6377 LEX → ORD 30 63.3%
OO6440 ORD → LEX 30 86.7%

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 237 −20.2% 19 72.6%
June 2026 184 −38.3% 9 66.8%
May 2026 257 −1.2% 10 80.5%
April 2026 349 +36.3% 15 80.2%
March 2026 234 +110.8% 7 76.9%
February 2026 173 +69.6% 0 78.6%
January 2026 168 +58.5% 11 77.4%
December 2025 236 +26.9% 7 63.1%
November 2025 270 +0.4% 15 78.5%
October 2025 457 +251.5% 0 75.9%
September 2025 408 4 83.8%
August 2025 337 12 71.2%
July 2025 297 7 63.3%
June 2025 298 0 63.1%
May 2025 260 4 82.3%
April 2025 256 4 87.1%
March 2025 111 0 82.0%
February 2025 102 0 80.4%
January 2025 106 4 83.0%
December 2024 186 0 85.5%
November 2024 269 0 91.4%
October 2024 130 0 90.0%

How to read this chart

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