Aviation Data
EN
EnglishTiếng Việt

432 km · Domestic

Chippewa Valley (EAU) – Chicago O'Hare (ORD)

In July 2026, 104 flights operated between Chippewa Valley and Chicago O'Hare (both directions), and 78.8% 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
January1061060.0%
February94940.0%
March10287▼ 14.7%
April9892▼ 6.1%
May108105▼ 2.8%
June10495▼ 8.7%
July1041040.0%
August104––
September98––
October108–in progress
November96––
December99––
Year to date (Jan–Jul)716683▼ 4.6%

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
January76.4%66.0%▼ 13.6%
February75.5%74.5%▼ 1.3%
March73.5%69.0%▼ 6.1%
April81.6%66.3%▼ 18.7%
May85.2%82.9%▼ 2.7%
June70.2%74.7%▲ 6.4%
July67.3%78.8%▲ 17.1%
August74.0%––
September86.7%––
October86.1%–in progress
November76.0%––
December65.7%––
Year-to-date average (Jan–Jul)75.7%73.2%▼ 3.3%

Cancelled flights by month

The most recent periods19 periods
PeriodCancelled flights 2025Cancelled flights 2026Change vs last year
January20▼ 100.0%
February20▼ 100.0%
March419▲ 375.0%
April412▲ 200.0%
May01–
June07–
July04–
August4––
September2––
October0–in progress
November4––
December11––
Year to date (Jan–Jul)1243▲ 258.3%

By direction

EAU → ORD

Scheduled flights
1,021
Flights operated
982
Cancelled
39 · 3.8%
On-time departures
79.0%

ORD → EAU

Scheduled flights
1,022
Flights operated
981
Cancelled
41 · 4.0%
On-time departures
71.7%

EAU → ORD and ORD → EAU counted separately.

Airlines on this route

Dec 1, 2024 – Jul 31, 2026
AirlineScheduled flights Share On-time departures Cancelled
SkyWest Airlines OO 2,043 100.0% 75.3% 80

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 · Dec 13, 2024 → Jul 31, 2026

Lowest average delay12:00–13:0020.3min · 371 recorded · 360 measured
Gap to highest-delay hour10.5min12:00 ↔ 21:00
Recorded flights2,043EAU–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 · 85.3% · 579 recorded · 559 measured · Source: the US BTS 06:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 07:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 08:00 · Fewer than 200 measured departures · 1 recorded · 1 measured · Source: the US BTS 09:00 · Fewer than 200 measured departures · 14 recorded · 12 measured · Source: the US BTS 10:00 · Fewer than 200 measured departures · 99 recorded · 97 measured · Source: the US BTS 11:00 · Fewer than 200 measured departures · 15 recorded · 15 measured · Source: the US BTS 12:00 · 74.2% · 371 recorded · 360 measured · Source: the US BTS 13:00 · Fewer than 200 measured departures · 41 recorded · 41 measured · Source: the US BTS 14:00 · 70.4% · 326 recorded · 311 measured · Source: the US BTS 15:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 16:00 · Fewer than 200 measured departures · 13 recorded · 13 measured · Source: the US BTS 17:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 18:00 · Fewer than 200 measured departures · 4 recorded · 4 measured · Source: the US BTS 19:00 · Fewer than 200 measured departures · 1 recorded · 0 measured · Source: the US BTS 20:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 21:00 · 69.7% · 551 recorded · 525 measured · Source: the US BTS 22:00 · Fewer than 200 measured departures · 28 recorded · 25 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 · 22.8 min · 579 recorded · 559 measured · Source: the US BTS 06:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 07:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 08:00 · Fewer than 200 measured departures · 1 recorded · 1 measured · Source: the US BTS 09:00 · Fewer than 200 measured departures · 14 recorded · 12 measured · Source: the US BTS 10:00 · Fewer than 200 measured departures · 99 recorded · 97 measured · Source: the US BTS 11:00 · Fewer than 200 measured departures · 15 recorded · 15 measured · Source: the US BTS 12:00 · 20.3 min · 371 recorded · 360 measured · Source: the US BTS 13:00 · Fewer than 200 measured departures · 41 recorded · 41 measured · Source: the US BTS 14:00 · 29.4 min · 326 recorded · 311 measured · Source: the US BTS 15:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 16:00 · Fewer than 200 measured departures · 13 recorded · 13 measured · Source: the US BTS 17:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 18:00 · Fewer than 200 measured departures · 4 recorded · 4 measured · Source: the US BTS 19:00 · Fewer than 200 measured departures · 1 recorded · 0 measured · Source: the US BTS 20:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 21:00 · 30.8 min · 551 recorded · 525 measured · Source: the US BTS 22:00 · Fewer than 200 measured departures · 28 recorded · 25 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 · 579 · 579 recorded · 559 measured · Source: the US BTS 06:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 07:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 08:00 · 1 · 1 recorded · 1 measured · Source: the US BTS 09:00 · 14 · 14 recorded · 12 measured · Source: the US BTS 10:00 · 99 · 99 recorded · 97 measured · Source: the US BTS 11:00 · 15 · 15 recorded · 15 measured · Source: the US BTS 12:00 · 371 · 371 recorded · 360 measured · Source: the US BTS 13:00 · 41 · 41 recorded · 41 measured · Source: the US BTS 14:00 · 326 · 326 recorded · 311 measured · Source: the US BTS 15:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 16:00 · 13 · 13 recorded · 13 measured · Source: the US BTS 17:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 18:00 · 4 · 4 recorded · 4 measured · Source: the US BTS 19:00 · 1 · 1 recorded · 0 measured · Source: the US BTS 20:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 21:00 · 551 · 551 recorded · 525 measured · Source: the US BTS 22:00 · 28 · 28 recorded · 25 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.

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———
05:0085.3%22.8 min559579
06:00No observations———
07:00No observations———
08:00Fewer than 200 measured departures—11
09:00Fewer than 200 measured departures—1214
10:00Fewer than 200 measured departures—9799
11:00Fewer than 200 measured departures—1515
12:0074.2%20.3 min360371
13:00Fewer than 200 measured departures—4141
14:0070.4%29.4 min311326
15:00No observations———
16:00Fewer than 200 measured departures—1313
17:00No observations———
18:00Fewer than 200 measured departures—44
19:00Fewer than 200 measured departures—01
20:00No observations———
21:0069.7%30.8 min525551
22:00Fewer than 200 measured departures—2528
23:00No observations———

Day of week

On-time departures Partial coverage: only airlines that report on-time data to the US DOT
Monday · 77.3% · 340 recorded · 321 measured · Source: the US BTS Tuesday · Fewer than 200 measured departures · 174 recorded · 167 measured · Source: the US BTS Wednesday · 76.0% · 294 recorded · 283 measured · Source: the US BTS Thursday · 75.0% · 334 recorded · 328 measured · Source: the US BTS Friday · 75.3% · 343 recorded · 332 measured · Source: the US BTS Saturday · 71.0% · 218 recorded · 207 measured · Source: the US BTS Sunday · 73.9% · 340 recorded · 325 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 · 18.0 min · 340 recorded · 321 measured · Source: the US BTS Tuesday · Fewer than 200 measured departures · 174 recorded · 167 measured · Source: the US BTS Wednesday · 25.0 min · 294 recorded · 283 measured · Source: the US BTS Thursday · 22.7 min · 334 recorded · 328 measured · Source: the US BTS Friday · 28.7 min · 343 recorded · 332 measured · Source: the US BTS Saturday · 38.3 min · 218 recorded · 207 measured · Source: the US BTS Sunday · 29.0 min · 340 recorded · 325 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 · 340 · 340 recorded · 321 measured · Source: the US BTS Tuesday · 174 · 174 recorded · 167 measured · Source: the US BTS Wednesday · 294 · 294 recorded · 283 measured · Source: the US BTS Thursday · 334 · 334 recorded · 328 measured · Source: the US BTS Friday · 343 · 343 recorded · 332 measured · Source: the US BTS Saturday · 218 · 218 recorded · 207 measured · Source: the US BTS Sunday · 340 · 340 recorded · 325 measured · Source: the US BTS

Hover, tap or focus a point to see its value, sample and source.

View the figures
Day of weekOn-time departuresAverage departure delayWith departure timeRecorded flights
Monday77.3%18.0 min321340
TuesdayFewer than 200 measured departures—167174
Wednesday76.0%25.0 min283294
Thursday75.0%22.7 min328334
Friday75.3%28.7 min332343
Saturday71.0%38.3 min207218
Sunday73.9%29.0 min325340

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 · 71.2% · 214 recorded · 212 measured · Source: the US BTS Feb · Fewer than 200 measured departures · 190 recorded · 188 measured · Source: the US BTS Mar · Fewer than 200 measured departures · 212 recorded · 189 measured · Source: the US BTS Apr · Fewer than 200 measured departures · 206 recorded · 190 measured · Source: the US BTS May · 84.0% · 214 recorded · 213 measured · Source: the US BTS Jun · Fewer than 200 measured departures · 206 recorded · 199 measured · Source: the US BTS Jul · 73.1% · 212 recorded · 208 measured · Source: the US BTS Aug · Fewer than 200 measured departures · 108 recorded · 104 measured · Source: the US BTS Sep · Fewer than 200 measured departures · 100 recorded · 98 measured · Source: the US BTS Oct · Fewer than 200 measured departures · 108 recorded · 108 measured · Source: the US BTS Nov · Fewer than 200 measured departures · 100 recorded · 96 measured · Source: the US BTS Dec · Fewer than 200 measured departures · 173 recorded · 158 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 · 32.4 min · 214 recorded · 212 measured · Source: the US BTS Feb · Fewer than 200 measured departures · 190 recorded · 188 measured · Source: the US BTS Mar · Fewer than 200 measured departures · 212 recorded · 189 measured · Source: the US BTS Apr · Fewer than 200 measured departures · 206 recorded · 190 measured · Source: the US BTS May · 9.8 min · 214 recorded · 213 measured · Source: the US BTS Jun · Fewer than 200 measured departures · 206 recorded · 199 measured · Source: the US BTS Jul · 20.7 min · 212 recorded · 208 measured · Source: the US BTS Aug · Fewer than 200 measured departures · 108 recorded · 104 measured · Source: the US BTS Sep · Fewer than 200 measured departures · 100 recorded · 98 measured · Source: the US BTS Oct · Fewer than 200 measured departures · 108 recorded · 108 measured · Source: the US BTS Nov · Fewer than 200 measured departures · 100 recorded · 96 measured · Source: the US BTS Dec · Fewer than 200 measured departures · 173 recorded · 158 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 · 214 · 214 recorded · 212 measured · Source: the US BTS Feb · 190 · 190 recorded · 188 measured · Source: the US BTS Mar · 212 · 212 recorded · 189 measured · Source: the US BTS Apr · 206 · 206 recorded · 190 measured · Source: the US BTS May · 214 · 214 recorded · 213 measured · Source: the US BTS Jun · 206 · 206 recorded · 199 measured · Source: the US BTS Jul · 212 · 212 recorded · 208 measured · Source: the US BTS Aug · 108 · 108 recorded · 104 measured · Source: the US BTS Sep · 100 · 100 recorded · 98 measured · Source: the US BTS Oct · 108 · 108 recorded · 108 measured · Source: the US BTS Nov · 100 · 100 recorded · 96 measured · Source: the US BTS Dec · 173 · 173 recorded · 158 measured · Source: the US BTS

Hover, tap or focus a point to see its value, sample and source.

View the figures
Month of yearOn-time departuresAverage departure delayWith departure timeRecorded flights
Jan71.2%32.4 min212214
FebFewer than 200 measured departures—188190
MarFewer than 200 measured departures—189212
AprFewer than 200 measured departures—190206
May84.0%9.8 min213214
JunFewer than 200 measured departures—199206
Jul73.1%20.7 min208212
AugFewer than 200 measured departures—104108
SepFewer than 200 measured departures—98100
OctFewer than 200 measured departures—108108
NovFewer than 200 measured departures—96100
DecFewer than 200 measured departures—158173

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 72.4% 1,479
  • Delayed >15 min 23.7% 484
  • Cancelled 3.9% 80
  • 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

11
11 of 11
Flight numbersBy direction DeparturesOn time
OO5121 EAU → ORD 536 85.3%
OO5124 ORD → EAU 523 68.9%
OO5122 EAU → ORD 239 70.2%
OO5122 ORD → EAU 145 72.7%
OO5123 ORD → EAU 77 74.0%
OO5016 ORD → EAU 50 85.7%
OO5027 ORD → EAU 40 72.5%
OO5029 EAU → ORD 37 83.8%
OO5033 EAU → ORD 37 69.4%
OO5119 ORD → EAU 33 78.8%
OO5123 EAU → ORD 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 104 +0.0% 4 78.8%
June 2026 95 −8.7% 7 74.7%
May 2026 105 −2.8% 1 82.9%
April 2026 92 −6.1% 12 66.3%
March 2026 87 −14.7% 19 69.0%
February 2026 94 +0.0% 0 74.5%
January 2026 106 +0.0% 0 66.0%
December 2025 99 +67.8% 11 65.7%
November 2025 96 4 76.0%
October 2025 108 0 86.1%
September 2025 98 2 86.7%
August 2025 104 4 74.0%
July 2025 104 0 67.3%
June 2025 104 0 70.2%
May 2025 108 0 85.2%
April 2025 98 4 81.6%
March 2025 102 4 73.5%
February 2025 94 2 75.5%
January 2025 106 2 76.4%
December 2024 59 4 72.9%

How to read this chart

Loading the guide…