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2,139 km · Domestic

Missoula Montana (MSO) – Chicago O'Hare (ORD)

In July 2026, 134 flights operated between Missoula Montana and Chicago O'Hare (both directions), and 83.6% 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 periods14 periods
PeriodFlights operated 2025Flights operated 2026Change vs last year
January–62–
February–56–
March–62–
April–60–
May2083▲ 315.0%
June163117▼ 28.2%
July182134▼ 26.4%
August178––
September144––
October69–in progress
November–––
December28––

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–67.7%–
February–66.1%–
March–61.3%–
April–80.0%–
May100.0%94.0%▼ 6.0%
June86.5%83.8%▼ 3.1%
July76.9%83.6%▲ 8.7%
August79.8%––
September87.5%––
October89.9%–in progress
November–––
December42.9%––

Cancelled flights by month

The most recent periods14 periods
PeriodCancelled flights 2025Cancelled flights 2026Change vs last year
January–0–
February–0–
March–0–
April–0–
May01–
June03–
July20▼ 100.0%
August0––
September2––
October0–in progress
November–––
December0––

Airlines on this route

  1. Envoy Air 66.6%
  2. United Airlines 25.6%
  3. SkyWest Airlines 7.8%

May 1, 2025 – Jul 31, 2026

By direction

MSO → ORD

Scheduled flights
683
Flights operated
678
Cancelled
5 · 0.7%
On-time departures
77.7%

ORD → MSO

Scheduled flights
683
Flights operated
680
Cancelled
3 · 0.4%
On-time departures
83.7%

MSO → ORD and ORD → MSO counted separately.

Airlines on this route

May 1, 2025 – Jul 31, 2026
AirlineScheduled flights Share On-time departures Cancelled
Envoy Air MQ 910 66.6% 77.5% 2
United Airlines UA 350 25.6% 87.6% 4
SkyWest Airlines OO 106 7.8% 85.6% 2

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 · May 22, 2025 → Jul 31, 2026

Lowest average delay09:00–10:005.1min · 369 recorded · 369 measured
Gap to highest-delay hour26.7min09:00 ↔ 13:00
Recorded flights1,366MSO–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 · 51 recorded · 51 measured · Source: the US BTS 06:00 · Fewer than 200 measured departures · 53 recorded · 53 measured · Source: the US BTS 07:00 · Fewer than 200 measured departures · 6 recorded · 6 measured · Source: the US BTS 08:00 · Fewer than 200 measured departures · 198 recorded · 195 measured · Source: the US BTS 09:00 · 87.3% · 369 recorded · 369 measured · Source: the US BTS 10:00 · Fewer than 200 measured departures · 6 recorded · 6 measured · Source: the US BTS 11:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 12:00 · 82.0% · 337 recorded · 333 measured · Source: the US BTS 13:00 · 63.7% · 226 recorded · 226 measured · Source: the US BTS 14:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 15:00 · Fewer than 200 measured departures · 5 recorded · 5 measured · Source: the US BTS 16:00 · Fewer than 200 measured departures · 1 recorded · 1 measured · Source: the US BTS 17:00 · Fewer than 200 measured departures · 1 recorded · 1 measured · Source: the US BTS 18:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 19:00 · Fewer than 200 measured departures · 5 recorded · 5 measured · Source: the US BTS 20:00 · Fewer than 200 measured departures · 108 recorded · 107 measured · Source: the US BTS 21:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 22:00 · No observations · 0 recorded · 0 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 · Fewer than 200 measured departures · 51 recorded · 51 measured · Source: the US BTS 06:00 · Fewer than 200 measured departures · 53 recorded · 53 measured · Source: the US BTS 07:00 · Fewer than 200 measured departures · 6 recorded · 6 measured · Source: the US BTS 08:00 · Fewer than 200 measured departures · 198 recorded · 195 measured · Source: the US BTS 09:00 · 5.1 min · 369 recorded · 369 measured · Source: the US BTS 10:00 · Fewer than 200 measured departures · 6 recorded · 6 measured · Source: the US BTS 11:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 12:00 · 14.3 min · 337 recorded · 333 measured · Source: the US BTS 13:00 · 31.8 min · 226 recorded · 226 measured · Source: the US BTS 14:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 15:00 · Fewer than 200 measured departures · 5 recorded · 5 measured · Source: the US BTS 16:00 · Fewer than 200 measured departures · 1 recorded · 1 measured · Source: the US BTS 17:00 · Fewer than 200 measured departures · 1 recorded · 1 measured · Source: the US BTS 18:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 19:00 · Fewer than 200 measured departures · 5 recorded · 5 measured · Source: the US BTS 20:00 · Fewer than 200 measured departures · 108 recorded · 107 measured · Source: the US BTS 21:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 22:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 23:00 · No observations · 0 recorded · 0 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 · 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 · 51 · 51 recorded · 51 measured · Source: the US BTS 06:00 · 53 · 53 recorded · 53 measured · Source: the US BTS 07:00 · 6 · 6 recorded · 6 measured · Source: the US BTS 08:00 · 198 · 198 recorded · 195 measured · Source: the US BTS 09:00 · 369 · 369 recorded · 369 measured · Source: the US BTS 10:00 · 6 · 6 recorded · 6 measured · Source: the US BTS 11:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 12:00 · 337 · 337 recorded · 333 measured · Source: the US BTS 13:00 · 226 · 226 recorded · 226 measured · Source: the US BTS 14:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 15:00 · 5 · 5 recorded · 5 measured · Source: the US BTS 16:00 · 1 · 1 recorded · 1 measured · Source: the US BTS 17:00 · 1 · 1 recorded · 1 measured · Source: the US BTS 18:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 19:00 · 5 · 5 recorded · 5 measured · Source: the US BTS 20:00 · 108 · 108 recorded · 107 measured · Source: the US BTS 21:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 22:00 · No observations · 0 recorded · 0 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———
05:00Fewer than 200 measured departures—5151
06:00Fewer than 200 measured departures—5353
07:00Fewer than 200 measured departures—66
08:00Fewer than 200 measured departures—195198
09:0087.3%5.1 min369369
10:00Fewer than 200 measured departures—66
11:00No observations———
12:0082.0%14.3 min333337
13:0063.7%31.8 min226226
14:00No observations———
15:00Fewer than 200 measured departures—55
16:00Fewer than 200 measured departures—11
17:00Fewer than 200 measured departures—11
18:00No observations———
19:00Fewer than 200 measured departures—55
20:00Fewer than 200 measured departures—107108
21:00No observations———
22:00No observations———
23:00No observations———

Day of week

On-time departures Partial coverage: only airlines that report on-time data to the US DOT
Monday · Fewer than 200 measured departures · 197 recorded · 196 measured · Source: the US BTS Tuesday · Fewer than 200 measured departures · 186 recorded · 186 measured · Source: the US BTS Wednesday · Fewer than 200 measured departures · 188 recorded · 188 measured · Source: the US BTS Thursday · 82.2% · 203 recorded · 202 measured · Source: the US BTS Friday · Fewer than 200 measured departures · 202 recorded · 199 measured · Source: the US BTS Saturday · Fewer than 200 measured departures · 196 recorded · 193 measured · Source: the US BTS Sunday · Fewer than 200 measured departures · 194 recorded · 194 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 · Fewer than 200 measured departures · 197 recorded · 196 measured · Source: the US BTS Tuesday · Fewer than 200 measured departures · 186 recorded · 186 measured · Source: the US BTS Wednesday · Fewer than 200 measured departures · 188 recorded · 188 measured · Source: the US BTS Thursday · 8.0 min · 203 recorded · 202 measured · Source: the US BTS Friday · Fewer than 200 measured departures · 202 recorded · 199 measured · Source: the US BTS Saturday · Fewer than 200 measured departures · 196 recorded · 193 measured · Source: the US BTS Sunday · Fewer than 200 measured departures · 194 recorded · 194 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 · 197 · 197 recorded · 196 measured · Source: the US BTS Tuesday · 186 · 186 recorded · 186 measured · Source: the US BTS Wednesday · 188 · 188 recorded · 188 measured · Source: the US BTS Thursday · 203 · 203 recorded · 202 measured · Source: the US BTS Friday · 202 · 202 recorded · 199 measured · Source: the US BTS Saturday · 196 · 196 recorded · 193 measured · Source: the US BTS Sunday · 194 · 194 recorded · 194 measured · Source: the US BTS

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View the figures
Day of weekOn-time departuresAverage departure delayWith departure timeRecorded flights
MondayFewer than 200 measured departures—196197
TuesdayFewer than 200 measured departures—186186
WednesdayFewer than 200 measured departures—188188
Thursday82.2%8.0 min202203
FridayFewer than 200 measured departures—199202
SaturdayFewer than 200 measured departures—193196
SundayFewer than 200 measured departures—194194

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 · 62 recorded · 62 measured · Source: the US BTS Feb · Fewer than 200 measured departures · 56 recorded · 56 measured · Source: the US BTS Mar · Fewer than 200 measured departures · 62 recorded · 62 measured · Source: the US BTS Apr · Fewer than 200 measured departures · 60 recorded · 60 measured · Source: the US BTS May · Fewer than 200 measured departures · 104 recorded · 103 measured · Source: the US BTS Jun · 85.4% · 283 recorded · 280 measured · Source: the US BTS Jul · 79.8% · 318 recorded · 316 measured · Source: the US BTS Aug · Fewer than 200 measured departures · 178 recorded · 178 measured · Source: the US BTS Sep · Fewer than 200 measured departures · 146 recorded · 144 measured · Source: the US BTS Oct · Fewer than 200 measured departures · 69 recorded · 69 measured · Source: the US BTS Nov · No observations · 0 recorded · 0 measured · Source: the US BTS Dec · Fewer than 200 measured departures · 28 recorded · 28 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 · 62 recorded · 62 measured · Source: the US BTS Feb · Fewer than 200 measured departures · 56 recorded · 56 measured · Source: the US BTS Mar · Fewer than 200 measured departures · 62 recorded · 62 measured · Source: the US BTS Apr · Fewer than 200 measured departures · 60 recorded · 60 measured · Source: the US BTS May · Fewer than 200 measured departures · 104 recorded · 103 measured · Source: the US BTS Jun · 13.0 min · 283 recorded · 280 measured · Source: the US BTS Jul · 17.0 min · 318 recorded · 316 measured · Source: the US BTS Aug · Fewer than 200 measured departures · 178 recorded · 178 measured · Source: the US BTS Sep · Fewer than 200 measured departures · 146 recorded · 144 measured · Source: the US BTS Oct · Fewer than 200 measured departures · 69 recorded · 69 measured · Source: the US BTS Nov · No observations · 0 recorded · 0 measured · Source: the US BTS Dec · Fewer than 200 measured departures · 28 recorded · 28 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 · 62 · 62 recorded · 62 measured · Source: the US BTS Feb · 56 · 56 recorded · 56 measured · Source: the US BTS Mar · 62 · 62 recorded · 62 measured · Source: the US BTS Apr · 60 · 60 recorded · 60 measured · Source: the US BTS May · 104 · 104 recorded · 103 measured · Source: the US BTS Jun · 283 · 283 recorded · 280 measured · Source: the US BTS Jul · 318 · 318 recorded · 316 measured · Source: the US BTS Aug · 178 · 178 recorded · 178 measured · Source: the US BTS Sep · 146 · 146 recorded · 144 measured · Source: the US BTS Oct · 69 · 69 recorded · 69 measured · Source: the US BTS Nov · No observations · 0 recorded · 0 measured · Source: the US BTS Dec · 28 · 28 recorded · 28 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—6262
FebFewer than 200 measured departures—5656
MarFewer than 200 measured departures—6262
AprFewer than 200 measured departures—6060
MayFewer than 200 measured departures—103104
Jun85.4%13.0 min280283
Jul79.8%17.0 min316318
AugFewer than 200 measured departures—178178
SepFewer than 200 measured departures—144146
OctFewer than 200 measured departures—6969
NovNo observations———
DecFewer than 200 measured departures—2828

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 80.2% 1,096
  • Delayed >15 min 19.2% 262
  • Cancelled 0.6% 8
  • 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

14
14 of 14
Flight numbersBy direction DeparturesOn time
MQ4199 ORD → MSO 154 80.5%
MQ4199 MSO → ORD 154 58.4%
MQ3905 ORD → MSO 114 93.0%
MQ3899 MSO → ORD 89 93.2%
UA2385 ORD → MSO 89 92.1%
UA2620 MSO → ORD 89 84.3%
MQ3905 MSO → ORD 86 74.4%
MQ3718 MSO → ORD 72 75.0%
MQ3718 ORD → MSO 72 91.7%
UA1180 ORD → MSO 72 90.1%
UA636 MSO → ORD 72 87.0%
MQ3898 ORD → MSO 62 52.5%
OO4773 MSO → ORD 31 80.7%
OO5747 ORD → MSO 31 90.3%

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 134 −26.4% 0 83.6%
June 2026 117 −28.2% 3 83.8%
May 2026 83 +315.0% 1 94.0%
April 2026 60 0 80.0%
March 2026 62 0 61.3%
February 2026 56 0 66.1%
January 2026 62 0 67.7%
December 2025 28 0 42.9%
October 2025 69 0 89.9%
September 2025 144 2 87.5%
August 2025 178 0 79.8%
July 2025 182 2 76.9%
June 2025 163 0 86.5%
May 2025 20 0 100.0%

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