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375 km · Domestic

Waterloo (ALO) – Chicago O'Hare (ORD)

In July 2026, 98 flights operated between Waterloo and Chicago O'Hare (both directions), and 74.5% 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 periods14 periods
PeriodFlights operated 2025Flights operated 2026Change vs last year
January–108–
February–96–
March–99–
April–112–
May–118–
June10390▼ 12.6%
July12098▼ 18.3%
August110––
September104––
October122–in progress
November102––
December102––

On-time departures by month

Departures within 15 minutes of schedule.

The most recent periods14 periods
PeriodOn-time departures 2025On-time departures 2026Change vs last year
January–67.6%–
February–87.5%–
March–67.7%–
April–73.2%–
May–84.7%–
June70.9%68.9%▼ 2.8%
July70.8%74.5%▲ 5.2%
August84.5%––
September82.7%––
October89.3%–in progress
November80.4%––
December64.7%––

Cancelled flights by month

The most recent periods14 periods
PeriodCancelled flights 2025Cancelled flights 2026Change vs last year
January–0–
February–0–
March–7–
April–6–
May–0–
June012–
July210▲ 400.0%
August0––
September0––
October0–in progress
November6––
December10––

Airlines on this route

  1. Envoy Air 86.9%
  2. SkyWest Airlines 13.1%

Jun 1, 2025 – Jul 31, 2026

By direction

ALO → ORD

Scheduled flights
768
Flights operated
743
Cancelled
25 · 3.3%
On-time departures
79.3%

ORD → ALO

Scheduled flights
769
Flights operated
741
Cancelled
28 · 3.6%
On-time departures
73.7%

ALO → ORD and ORD → ALO counted separately.

Airlines on this route

Jun 1, 2025 – Jul 31, 2026
AirlineScheduled flights Share On-time departures Cancelled
Envoy Air MQ 1,336 86.9% 77.3% 31
SkyWest Airlines OO 201 13.1% 70.4% 22

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 · Jun 5, 2025 → Jul 31, 2026

Lowest average delay13:00–14:0011.0min · 290 recorded · 284 measured
Gap to highest-delay hour13.9min13:00 ↔ 22:00
Recorded flights1,537ALO–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 · 189 recorded · 179 measured · Source: the US BTS 06:00 · 86.1% · 226 recorded · 223 measured · Source: the US BTS 07:00 · Fewer than 200 measured departures · 2 recorded · 2 measured · Source: the US BTS 08:00 · Fewer than 200 measured departures · 2 recorded · 2 measured · Source: the US BTS 09:00 · Fewer than 200 measured departures · 2 recorded · 2 measured · Source: the US BTS 10:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 11:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 12:00 · Fewer than 200 measured departures · 48 recorded · 48 measured · Source: the US BTS 13:00 · 80.3% · 290 recorded · 284 measured · Source: the US BTS 14:00 · Fewer than 200 measured departures · 49 recorded · 48 measured · Source: the US BTS 15:00 · 72.2% · 302 recorded · 291 measured · Source: the US BTS 16:00 · Fewer than 200 measured departures · 13 recorded · 13 measured · Source: the US BTS 17:00 · Fewer than 200 measured departures · 5 recorded · 5 measured · Source: the US BTS 18:00 · Fewer than 200 measured departures · 15 recorded · 15 measured · Source: the US BTS 19:00 · Fewer than 200 measured departures · 1 recorded · 1 measured · Source: the US BTS 20:00 · Fewer than 200 measured departures · 26 recorded · 26 measured · Source: the US BTS 21:00 · Fewer than 200 measured departures · 38 recorded · 38 measured · Source: the US BTS 22:00 · 65.9% · 269 recorded · 255 measured · Source: the US BTS 23:00 · Fewer than 200 measured departures · 60 recorded · 52 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 · 189 recorded · 179 measured · Source: the US BTS 06:00 · 20.6 min · 226 recorded · 223 measured · Source: the US BTS 07:00 · Fewer than 200 measured departures · 2 recorded · 2 measured · Source: the US BTS 08:00 · Fewer than 200 measured departures · 2 recorded · 2 measured · Source: the US BTS 09:00 · Fewer than 200 measured departures · 2 recorded · 2 measured · Source: the US BTS 10:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 11:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 12:00 · Fewer than 200 measured departures · 48 recorded · 48 measured · Source: the US BTS 13:00 · 11.0 min · 290 recorded · 284 measured · Source: the US BTS 14:00 · Fewer than 200 measured departures · 49 recorded · 48 measured · Source: the US BTS 15:00 · 18.4 min · 302 recorded · 291 measured · Source: the US BTS 16:00 · Fewer than 200 measured departures · 13 recorded · 13 measured · Source: the US BTS 17:00 · Fewer than 200 measured departures · 5 recorded · 5 measured · Source: the US BTS 18:00 · Fewer than 200 measured departures · 15 recorded · 15 measured · Source: the US BTS 19:00 · Fewer than 200 measured departures · 1 recorded · 1 measured · Source: the US BTS 20:00 · Fewer than 200 measured departures · 26 recorded · 26 measured · Source: the US BTS 21:00 · Fewer than 200 measured departures · 38 recorded · 38 measured · Source: the US BTS 22:00 · 24.9 min · 269 recorded · 255 measured · Source: the US BTS 23:00 · Fewer than 200 measured departures · 60 recorded · 52 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 · 189 · 189 recorded · 179 measured · Source: the US BTS 06:00 · 226 · 226 recorded · 223 measured · Source: the US BTS 07:00 · 2 · 2 recorded · 2 measured · Source: the US BTS 08:00 · 2 · 2 recorded · 2 measured · Source: the US BTS 09:00 · 2 · 2 recorded · 2 measured · Source: the US BTS 10:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 11:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 12:00 · 48 · 48 recorded · 48 measured · Source: the US BTS 13:00 · 290 · 290 recorded · 284 measured · Source: the US BTS 14:00 · 49 · 49 recorded · 48 measured · Source: the US BTS 15:00 · 302 · 302 recorded · 291 measured · Source: the US BTS 16:00 · 13 · 13 recorded · 13 measured · Source: the US BTS 17:00 · 5 · 5 recorded · 5 measured · Source: the US BTS 18:00 · 15 · 15 recorded · 15 measured · Source: the US BTS 19:00 · 1 · 1 recorded · 1 measured · Source: the US BTS 20:00 · 26 · 26 recorded · 26 measured · Source: the US BTS 21:00 · 38 · 38 recorded · 38 measured · Source: the US BTS 22:00 · 269 · 269 recorded · 255 measured · Source: the US BTS 23:00 · 60 · 60 recorded · 52 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—179189
06:0086.1%20.6 min223226
07:00Fewer than 200 measured departures—22
08:00Fewer than 200 measured departures—22
09:00Fewer than 200 measured departures—22
10:00No observations———
11:00No observations———
12:00Fewer than 200 measured departures—4848
13:0080.3%11.0 min284290
14:00Fewer than 200 measured departures—4849
15:0072.2%18.4 min291302
16:00Fewer than 200 measured departures—1313
17:00Fewer than 200 measured departures—55
18:00Fewer than 200 measured departures—1515
19:00Fewer than 200 measured departures—11
20:00Fewer than 200 measured departures—2626
21:00Fewer than 200 measured departures—3838
22:0065.9%24.9 min255269
23:00Fewer than 200 measured departures—5260

Day of week

On-time departures Partial coverage: only airlines that report on-time data to the US DOT
Monday · 74.5% · 240 recorded · 231 measured · Source: the US BTS Tuesday · Fewer than 200 measured departures · 164 recorded · 163 measured · Source: the US BTS Wednesday · 77.7% · 236 recorded · 233 measured · Source: the US BTS Thursday · 75.2% · 237 recorded · 230 measured · Source: the US BTS Friday · 73.9% · 242 recorded · 230 measured · Source: the US BTS Saturday · Fewer than 200 measured departures · 178 recorded · 169 measured · Source: the US BTS Sunday · 74.1% · 240 recorded · 228 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 · 22.9 min · 240 recorded · 231 measured · Source: the US BTS Tuesday · Fewer than 200 measured departures · 164 recorded · 163 measured · Source: the US BTS Wednesday · 21.2 min · 236 recorded · 233 measured · Source: the US BTS Thursday · 18.1 min · 237 recorded · 230 measured · Source: the US BTS Friday · 20.4 min · 242 recorded · 230 measured · Source: the US BTS Saturday · Fewer than 200 measured departures · 178 recorded · 169 measured · Source: the US BTS Sunday · 27.7 min · 240 recorded · 228 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 · 240 · 240 recorded · 231 measured · Source: the US BTS Tuesday · 164 · 164 recorded · 163 measured · Source: the US BTS Wednesday · 236 · 236 recorded · 233 measured · Source: the US BTS Thursday · 237 · 237 recorded · 230 measured · Source: the US BTS Friday · 242 · 242 recorded · 230 measured · Source: the US BTS Saturday · 178 · 178 recorded · 169 measured · Source: the US BTS Sunday · 240 · 240 recorded · 228 measured · Source: the US BTS

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View the figures
Day of weekOn-time departuresAverage departure delayWith departure timeRecorded flights
Monday74.5%22.9 min231240
TuesdayFewer than 200 measured departures—163164
Wednesday77.7%21.2 min233236
Thursday75.2%18.1 min230237
Friday73.9%20.4 min230242
SaturdayFewer than 200 measured departures—169178
Sunday74.1%27.7 min228240

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 · Fewer than 200 measured departures · 108 recorded · 108 measured · Source: the US BTS Feb · Fewer than 200 measured departures · 96 recorded · 96 measured · Source: the US BTS Mar · Fewer than 200 measured departures · 106 recorded · 99 measured · Source: the US BTS Apr · Fewer than 200 measured departures · 118 recorded · 112 measured · Source: the US BTS May · Fewer than 200 measured departures · 118 recorded · 118 measured · Source: the US BTS Jun · Fewer than 200 measured departures · 205 recorded · 193 measured · Source: the US BTS Jul · 72.5% · 230 recorded · 218 measured · Source: the US BTS Aug · Fewer than 200 measured departures · 110 recorded · 110 measured · Source: the US BTS Sep · Fewer than 200 measured departures · 104 recorded · 104 measured · Source: the US BTS Oct · Fewer than 200 measured departures · 122 recorded · 122 measured · Source: the US BTS Nov · Fewer than 200 measured departures · 108 recorded · 102 measured · Source: the US BTS Dec · Fewer than 200 measured departures · 112 recorded · 102 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 · Fewer than 200 measured departures · 108 recorded · 108 measured · Source: the US BTS Feb · Fewer than 200 measured departures · 96 recorded · 96 measured · Source: the US BTS Mar · Fewer than 200 measured departures · 106 recorded · 99 measured · Source: the US BTS Apr · Fewer than 200 measured departures · 118 recorded · 112 measured · Source: the US BTS May · Fewer than 200 measured departures · 118 recorded · 118 measured · Source: the US BTS Jun · Fewer than 200 measured departures · 205 recorded · 193 measured · Source: the US BTS Jul · 22.8 min · 230 recorded · 218 measured · Source: the US BTS Aug · Fewer than 200 measured departures · 110 recorded · 110 measured · Source: the US BTS Sep · Fewer than 200 measured departures · 104 recorded · 104 measured · Source: the US BTS Oct · Fewer than 200 measured departures · 122 recorded · 122 measured · Source: the US BTS Nov · Fewer than 200 measured departures · 108 recorded · 102 measured · Source: the US BTS Dec · Fewer than 200 measured departures · 112 recorded · 102 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 · 108 · 108 recorded · 108 measured · Source: the US BTS Feb · 96 · 96 recorded · 96 measured · Source: the US BTS Mar · 106 · 106 recorded · 99 measured · Source: the US BTS Apr · 118 · 118 recorded · 112 measured · Source: the US BTS May · 118 · 118 recorded · 118 measured · Source: the US BTS Jun · 205 · 205 recorded · 193 measured · Source: the US BTS Jul · 230 · 230 recorded · 218 measured · Source: the US BTS Aug · 110 · 110 recorded · 110 measured · Source: the US BTS Sep · 104 · 104 recorded · 104 measured · Source: the US BTS Oct · 122 · 122 recorded · 122 measured · Source: the US BTS Nov · 108 · 108 recorded · 102 measured · Source: the US BTS Dec · 112 · 112 recorded · 102 measured · Source: the US BTS

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View the figures
Month of yearOn-time departuresAverage departure delayWith departure timeRecorded flights
JanFewer than 200 measured departures—108108
FebFewer than 200 measured departures—9696
MarFewer than 200 measured departures—99106
AprFewer than 200 measured departures—112118
MayFewer than 200 measured departures—118118
JunFewer than 200 measured departures—193205
Jul72.5%22.8 min218230
AugFewer than 200 measured departures—110110
SepFewer than 200 measured departures—104104
OctFewer than 200 measured departures—122122
NovFewer than 200 measured departures—102108
DecFewer than 200 measured departures—102112

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 73.8% 1,135
  • Delayed >15 min 22.7% 349
  • Cancelled 3.4% 53
  • 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

8
8 of 8
Flight numbersBy direction DeparturesOn time
MQ4322 ALO → ORD 363 86.4%
MQ4321 ORD → ALO 355 68.3%
MQ4326 ORD → ALO 313 81.4%
MQ4326 ALO → ORD 305 72.6%
OO4824 ORD → ALO 58 62.0%
OO4826 ALO → ORD 58 72.2%
OO4825 ALO → ORD 42 75.0%
OO4825 ORD → ALO 42 76.3%

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 98 −18.3% 10 74.5%
June 2026 90 −12.6% 12 68.9%
May 2026 118 0 84.7%
April 2026 112 6 73.2%
March 2026 99 7 67.7%
February 2026 96 0 87.5%
January 2026 108 0 67.6%
December 2025 102 10 64.7%
November 2025 102 6 80.4%
October 2025 122 0 89.3%
September 2025 104 0 82.7%
August 2025 110 0 84.5%
July 2025 120 2 70.8%
June 2025 103 0 70.9%

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