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639 km · Domestic

Duluth (DLH) – Chicago O'Hare (ORD)

In July 2026, 221 flights operated between Duluth and Chicago O'Hare (both directions), and 75.6% 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
January121122▲ 0.8%
February132142▲ 7.6%
March165195▲ 18.2%
April160252▲ 57.5%
May180267▲ 48.3%
June218183▼ 16.1%
July2212210.0%
August207––
September235––
October229–in progress
November168––
December116––
Year to date (Jan–Jul)1,1971,382▲ 15.5%

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
January76.9%66.4%▼ 13.7%
February75.0%80.3%▲ 7.1%
March70.9%63.6%▼ 10.3%
April79.4%77.4%▼ 2.5%
May83.9%81.3%▼ 3.1%
June79.4%79.8%▲ 0.5%
July68.8%75.6%▲ 9.9%
August74.9%––
September75.7%––
October84.3%–in progress
November70.2%––
December51.7%––
Year-to-date average (Jan–Jul)76.3%74.9%▼ 1.9%

Cancelled flights by month

The most recent periods19 periods
PeriodCancelled flights 2025Cancelled flights 2026Change vs last year
January32▼ 33.3%
February440.0%
March125▲ 2,400.0%
April421▲ 425.0%
May02–
June07–
July519▲ 280.0%
August6––
September3––
October0–in progress
November10––
December10––
Year to date (Jan–Jul)1780▲ 370.6%

Airlines on this route

  1. SkyWest Airlines 89.0%
  2. Republic Airways 11.0%

Oct 1, 2024 – Jul 31, 2026

By direction

DLH → ORD

Scheduled flights
2,054
Flights operated
1,988
Cancelled
66 · 3.2%
On-time departures
77.7%

ORD → DLH

Scheduled flights
2,054
Flights operated
1,991
Cancelled
63 · 3.1%
On-time departures
75.2%

DLH → ORD and ORD → DLH counted separately.

Airlines on this route

Oct 1, 2024 – Jul 31, 2026
AirlineScheduled flights Share On-time departures Cancelled
SkyWest Airlines OO 3,655 89.0% 74.6% 118
Republic Airways YX 453 11.0% 91.4% 11

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 delay09:00–10:006.8min · 228 recorded · 226 measured
Gap to highest-delay hour21.8min09:00 ↔ 20:00
Recorded flights4,108DLH–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 · 28 recorded · 27 measured · Source: the US BTS 06:00 · Fewer than 200 measured departures · 19 recorded · 18 measured · Source: the US BTS 07:00 · 84.3% · 408 recorded · 395 measured · Source: the US BTS 08:00 · 84.1% · 578 recorded · 565 measured · Source: the US BTS 09:00 · 85.8% · 228 recorded · 226 measured · Source: the US BTS 10:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 11:00 · 75.2% · 489 recorded · 475 measured · Source: the US BTS 12:00 · 78.1% · 657 recorded · 647 measured · Source: the US BTS 13:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 14:00 · Fewer than 200 measured departures · 37 recorded · 36 measured · Source: the US BTS 15:00 · 71.0% · 718 recorded · 693 measured · Source: the US BTS 16:00 · Fewer than 200 measured departures · 127 recorded · 119 measured · Source: the US BTS 17:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 18:00 · Fewer than 200 measured departures · 142 recorded · 131 measured · Source: the US BTS 19:00 · Fewer than 200 measured departures · 35 recorded · 35 measured · Source: the US BTS 20:00 · 71.3% · 535 recorded · 519 measured · Source: the US BTS 21:00 · Fewer than 200 measured departures · 91 recorded · 80 measured · Source: the US BTS 22:00 · Fewer than 200 measured departures · 16 recorded · 13 measured · Source: the US BTS 23:00 · No observations · 0 recorded · 0 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
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 · 28 recorded · 27 measured · Source: the US BTS 06:00 · Fewer than 200 measured departures · 19 recorded · 18 measured · Source: the US BTS 07:00 · 18.1 min · 408 recorded · 395 measured · Source: the US BTS 08:00 · 8.9 min · 578 recorded · 565 measured · Source: the US BTS 09:00 · 6.8 min · 228 recorded · 226 measured · Source: the US BTS 10:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 11:00 · 23.9 min · 489 recorded · 475 measured · Source: the US BTS 12:00 · 14.3 min · 657 recorded · 647 measured · Source: the US BTS 13:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 14:00 · Fewer than 200 measured departures · 37 recorded · 36 measured · Source: the US BTS 15:00 · 24.4 min · 718 recorded · 693 measured · Source: the US BTS 16:00 · Fewer than 200 measured departures · 127 recorded · 119 measured · Source: the US BTS 17:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 18:00 · Fewer than 200 measured departures · 142 recorded · 131 measured · Source: the US BTS 19:00 · Fewer than 200 measured departures · 35 recorded · 35 measured · Source: the US BTS 20:00 · 28.6 min · 535 recorded · 519 measured · Source: the US BTS 21:00 · Fewer than 200 measured departures · 91 recorded · 80 measured · Source: the US BTS 22:00 · Fewer than 200 measured departures · 16 recorded · 13 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 · 28 · 28 recorded · 27 measured · Source: the US BTS 06:00 · 19 · 19 recorded · 18 measured · Source: the US BTS 07:00 · 408 · 408 recorded · 395 measured · Source: the US BTS 08:00 · 578 · 578 recorded · 565 measured · Source: the US BTS 09:00 · 228 · 228 recorded · 226 measured · Source: the US BTS 10:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 11:00 · 489 · 489 recorded · 475 measured · Source: the US BTS 12:00 · 657 · 657 recorded · 647 measured · Source: the US BTS 13:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 14:00 · 37 · 37 recorded · 36 measured · Source: the US BTS 15:00 · 718 · 718 recorded · 693 measured · Source: the US BTS 16:00 · 127 · 127 recorded · 119 measured · Source: the US BTS 17:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 18:00 · 142 · 142 recorded · 131 measured · Source: the US BTS 19:00 · 35 · 35 recorded · 35 measured · Source: the US BTS 20:00 · 535 · 535 recorded · 519 measured · Source: the US BTS 21:00 · 91 · 91 recorded · 80 measured · Source: the US BTS 22:00 · 16 · 16 recorded · 13 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—2728
06:00Fewer than 200 measured departures—1819
07:0084.3%18.1 min395408
08:0084.1%8.9 min565578
09:0085.8%6.8 min226228
10:00No observations———
11:0075.2%23.9 min475489
12:0078.1%14.3 min647657
13:00No observations———
14:00Fewer than 200 measured departures—3637
15:0071.0%24.4 min693718
16:00Fewer than 200 measured departures—119127
17:00No observations———
18:00Fewer than 200 measured departures—131142
19:00Fewer than 200 measured departures—3535
20:0071.3%28.6 min519535
21:00Fewer than 200 measured departures—8091
22:00Fewer than 200 measured departures—1316
23:00No observations———

Day of week

On-time departures Partial coverage: only airlines that report on-time data to the US DOT
Monday · 75.2% · 609 recorded · 585 measured · Source: the US BTS Tuesday · 77.9% · 578 recorded · 565 measured · Source: the US BTS Wednesday · 76.1% · 586 recorded · 572 measured · Source: the US BTS Thursday · 77.2% · 606 recorded · 588 measured · Source: the US BTS Friday · 76.4% · 609 recorded · 589 measured · Source: the US BTS Saturday · 77.3% · 535 recorded · 515 measured · Source: the US BTS Sunday · 75.4% · 585 recorded · 565 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 · 22.7 min · 609 recorded · 585 measured · Source: the US BTS Tuesday · 18.1 min · 578 recorded · 565 measured · Source: the US BTS Wednesday · 19.4 min · 586 recorded · 572 measured · Source: the US BTS Thursday · 23.6 min · 606 recorded · 588 measured · Source: the US BTS Friday · 19.7 min · 609 recorded · 589 measured · Source: the US BTS Saturday · 17.9 min · 535 recorded · 515 measured · Source: the US BTS Sunday · 23.9 min · 585 recorded · 565 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 · 609 · 609 recorded · 585 measured · Source: the US BTS Tuesday · 578 · 578 recorded · 565 measured · Source: the US BTS Wednesday · 586 · 586 recorded · 572 measured · Source: the US BTS Thursday · 606 · 606 recorded · 588 measured · Source: the US BTS Friday · 609 · 609 recorded · 589 measured · Source: the US BTS Saturday · 535 · 535 recorded · 515 measured · Source: the US BTS Sunday · 585 · 585 recorded · 565 measured · Source: the US BTS

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View the figures
Day of weekOn-time departuresAverage departure delayWith departure timeRecorded flights
Monday75.2%22.7 min585609
Tuesday77.9%18.1 min565578
Wednesday76.1%19.4 min572586
Thursday77.2%23.6 min588606
Friday76.4%19.7 min589609
Saturday77.3%17.9 min515535
Sunday75.4%23.9 min565585

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 · 71.6% · 248 recorded · 243 measured · Source: the US BTS Feb · 77.7% · 282 recorded · 274 measured · Source: the US BTS Mar · 66.9% · 386 recorded · 360 measured · Source: the US BTS Apr · 78.2% · 437 recorded · 412 measured · Source: the US BTS May · 82.3% · 449 recorded · 447 measured · Source: the US BTS Jun · 79.6% · 408 recorded · 401 measured · Source: the US BTS Jul · 72.2% · 466 recorded · 442 measured · Source: the US BTS Aug · 74.9% · 213 recorded · 207 measured · Source: the US BTS Sep · 75.7% · 238 recorded · 235 measured · Source: the US BTS Oct · 86.9% · 373 recorded · 373 measured · Source: the US BTS Nov · 79.4% · 354 recorded · 344 measured · Source: the US BTS Dec · 65.2% · 254 recorded · 241 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 · 25.3 min · 248 recorded · 243 measured · Source: the US BTS Feb · 18.1 min · 282 recorded · 274 measured · Source: the US BTS Mar · 32.9 min · 386 recorded · 360 measured · Source: the US BTS Apr · 23.0 min · 437 recorded · 412 measured · Source: the US BTS May · 13.8 min · 449 recorded · 447 measured · Source: the US BTS Jun · 16.3 min · 408 recorded · 401 measured · Source: the US BTS Jul · 29.1 min · 466 recorded · 442 measured · Source: the US BTS Aug · 14.1 min · 213 recorded · 207 measured · Source: the US BTS Sep · 14.8 min · 238 recorded · 235 measured · Source: the US BTS Oct · 3.9 min · 373 recorded · 373 measured · Source: the US BTS Nov · 16.7 min · 354 recorded · 344 measured · Source: the US BTS Dec · 46.7 min · 254 recorded · 241 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 · 248 · 248 recorded · 243 measured · Source: the US BTS Feb · 282 · 282 recorded · 274 measured · Source: the US BTS Mar · 386 · 386 recorded · 360 measured · Source: the US BTS Apr · 437 · 437 recorded · 412 measured · Source: the US BTS May · 449 · 449 recorded · 447 measured · Source: the US BTS Jun · 408 · 408 recorded · 401 measured · Source: the US BTS Jul · 466 · 466 recorded · 442 measured · Source: the US BTS Aug · 213 · 213 recorded · 207 measured · Source: the US BTS Sep · 238 · 238 recorded · 235 measured · Source: the US BTS Oct · 373 · 373 recorded · 373 measured · Source: the US BTS Nov · 354 · 354 recorded · 344 measured · Source: the US BTS Dec · 254 · 254 recorded · 241 measured · Source: the US BTS

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View the figures
Month of yearOn-time departuresAverage departure delayWith departure timeRecorded flights
Jan71.6%25.3 min243248
Feb77.7%18.1 min274282
Mar66.9%32.9 min360386
Apr78.2%23.0 min412437
May82.3%13.8 min447449
Jun79.6%16.3 min401408
Jul72.2%29.1 min442466
Aug74.9%14.1 min207213
Sep75.7%14.8 min235238
Oct86.9%3.9 min373373
Nov79.4%16.7 min344354
Dec65.2%46.7 min241254

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 74.1% 3,043
  • Delayed >15 min 22.8% 936
  • Cancelled 3.1% 129
  • 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

22
22 of 22
Flight numbersBy direction DeparturesOn time
OO4670 DLH → ORD 534 84.6%
OO4685 DLH → ORD 533 69.0%
OO5819 ORD → DLH 484 81.8%
OO5275 ORD → DLH 468 65.0%
OO5754 DLH → ORD 447 74.6%
OO5437 ORD → DLH 446 76.2%
YX3589 DLH → ORD 70 92.8%
YX3562 ORD → DLH 69 92.8%
OO4763 DLH → ORD 68 92.7%
OO5442 ORD → DLH 68 67.7%
YX3531 DLH → ORD 68 94.1%
YX3560 ORD → DLH 68 94.0%
OO5957 ORD → DLH 61 71.2%
OO5519 ORD → DLH 60 73.3%
OO5672 ORD → DLH 43 80.0%
OO4650 DLH → ORD 37 78.4%
OO5851 ORD → DLH 35 80.0%
OO5330 DLH → ORD 32 55.6%
OO6013 DLH → ORD 32 75.9%
YX3420 DLH → ORD 32 83.9%
YX3499 ORD → DLH 32 90.6%
YX3514 ORD → DLH 32 93.1%

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 221 +0.0% 19 75.6%
June 2026 183 −16.1% 7 79.8%
May 2026 267 +48.3% 2 81.3%
April 2026 252 +57.5% 21 77.4%
March 2026 195 +18.2% 25 63.6%
February 2026 142 +7.6% 4 80.3%
January 2026 122 +0.8% 2 66.4%
December 2025 116 −7.2% 10 51.7%
November 2025 168 −4.5% 10 70.2%
October 2025 229 +59.0% 0 84.3%
September 2025 235 3 75.7%
August 2025 207 6 74.9%
July 2025 221 5 68.8%
June 2025 218 0 79.4%
May 2025 180 0 83.9%
April 2025 160 4 79.4%
March 2025 165 1 70.9%
February 2025 132 4 75.0%
January 2025 121 3 76.9%
December 2024 125 3 77.6%
November 2024 176 0 88.1%
October 2024 144 0 91.0%

How to read this chart

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