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2,719 km · Domestic

General Mitchell (MKE) – Seattle–Tacoma (SEA)

In July 2026, 122 flights operated between General Mitchell and Seattle–Tacoma (both directions), and 85.2% 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
January4049▲ 22.5%
February3436▲ 5.9%
March50500.0%
April6071▲ 18.3%
May97110▲ 13.4%
June119118▼ 0.8%
July1221220.0%
August124––
September119––
October67–in progress
November66––
December83––
Year to date (Jan–Jul)522556▲ 6.5%

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
January82.5%75.5%▼ 8.5%
February88.2%83.3%▼ 5.6%
March94.0%90.0%▼ 4.3%
April90.0%95.8%▲ 6.4%
May93.8%86.4%▼ 7.9%
June84.0%89.0%▲ 6.0%
July78.7%85.2%▲ 8.3%
August82.3%––
September85.7%––
October88.1%–in progress
November84.8%––
December80.7%––
Year-to-date average (Jan–Jul)87.3%86.5%▼ 1.0%

Cancelled flights by month

The most recent periods19 periods
PeriodCancelled flights 2025Cancelled flights 2026Change vs last year
January00–
February20▼ 100.0%
March02–
April00–
May00–
June10▼ 100.0%
July00–
August0––
September1––
October0–in progress
November0––
December0––
Year to date (Jan–Jul)32▼ 33.3%

Airlines on this route

  1. Alaska Airlines 99.9%
  2. Delta Air Lines 0.1%

Oct 1, 2024 – Jul 31, 2026

By direction

MKE → SEA

Scheduled flights
849
Flights operated
845
Cancelled
4 · 0.5%
On-time departures
85.2%

SEA → MKE

Scheduled flights
850
Flights operated
848
Cancelled
2 · 0.2%
On-time departures
86.6%

MKE → SEA and SEA → MKE counted separately.

Airlines on this route

Oct 1, 2024 – Jul 31, 2026
AirlineScheduled flights Share On-time departures Cancelled
Alaska Airlines AS 1,697 99.9% 85.9% 6
Delta Air Lines DL 2 0.1% 100.0% 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 delay07:00–08:00-0.9min · 278 recorded · 277 measured
Gap to highest-delay hour11.1min07:00 ↔ 18:00
Recorded flights1,699MKE–SEA

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 · No observations · 0 recorded · 0 measured · Source: the US BTS 06:00 · Fewer than 200 measured departures · 194 recorded · 192 measured · Source: the US BTS 07:00 · 92.4% · 278 recorded · 277 measured · Source: the US BTS 08:00 · 92.8% · 276 recorded · 276 measured · Source: the US BTS 09:00 · Fewer than 200 measured departures · 114 recorded · 113 measured · Source: the US BTS 10:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 11:00 · Fewer than 200 measured departures · 1 recorded · 1 measured · Source: the US BTS 12:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 13:00 · Fewer than 200 measured departures · 1 recorded · 1 measured · Source: the US BTS 14:00 · 81.7% · 329 recorded · 328 measured · Source: the US BTS 15:00 · 83.9% · 224 recorded · 223 measured · Source: the US BTS 16:00 · Fewer than 200 measured departures · 33 recorded · 33 measured · Source: the US BTS 17:00 · Fewer than 200 measured departures · 3 recorded · 3 measured · Source: the US BTS 18:00 · 76.3% · 245 recorded · 245 measured · Source: the US BTS 19:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 20:00 · No observations · 0 recorded · 0 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 · Fewer than 200 measured departures · 1 recorded · 1 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 · No observations · 0 recorded · 0 measured · Source: the US BTS 06:00 · Fewer than 200 measured departures · 194 recorded · 192 measured · Source: the US BTS 07:00 · -0.9 min · 278 recorded · 277 measured · Source: the US BTS 08:00 · -0.5 min · 276 recorded · 276 measured · Source: the US BTS 09:00 · Fewer than 200 measured departures · 114 recorded · 113 measured · Source: the US BTS 10:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 11:00 · Fewer than 200 measured departures · 1 recorded · 1 measured · Source: the US BTS 12:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 13:00 · Fewer than 200 measured departures · 1 recorded · 1 measured · Source: the US BTS 14:00 · 4.8 min · 329 recorded · 328 measured · Source: the US BTS 15:00 · 3.3 min · 224 recorded · 223 measured · Source: the US BTS 16:00 · Fewer than 200 measured departures · 33 recorded · 33 measured · Source: the US BTS 17:00 · Fewer than 200 measured departures · 3 recorded · 3 measured · Source: the US BTS 18:00 · 10.2 min · 245 recorded · 245 measured · Source: the US BTS 19:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 20:00 · No observations · 0 recorded · 0 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 · Fewer than 200 measured departures · 1 recorded · 1 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 · No observations · 0 recorded · 0 measured · Source: the US BTS 06:00 · 194 · 194 recorded · 192 measured · Source: the US BTS 07:00 · 278 · 278 recorded · 277 measured · Source: the US BTS 08:00 · 276 · 276 recorded · 276 measured · Source: the US BTS 09:00 · 114 · 114 recorded · 113 measured · Source: the US BTS 10:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 11:00 · 1 · 1 recorded · 1 measured · Source: the US BTS 12:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 13:00 · 1 · 1 recorded · 1 measured · Source: the US BTS 14:00 · 329 · 329 recorded · 328 measured · Source: the US BTS 15:00 · 224 · 224 recorded · 223 measured · Source: the US BTS 16:00 · 33 · 33 recorded · 33 measured · Source: the US BTS 17:00 · 3 · 3 recorded · 3 measured · Source: the US BTS 18:00 · 245 · 245 recorded · 245 measured · Source: the US BTS 19:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 20:00 · No observations · 0 recorded · 0 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 · 1 · 1 recorded · 1 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———
05:00No observations———
06:00Fewer than 200 measured departures—192194
07:0092.4%-0.9 min277278
08:0092.8%-0.5 min276276
09:00Fewer than 200 measured departures—113114
10:00No observations———
11:00Fewer than 200 measured departures—11
12:00No observations———
13:00Fewer than 200 measured departures—11
14:0081.7%4.8 min328329
15:0083.9%3.3 min223224
16:00Fewer than 200 measured departures—3333
17:00Fewer than 200 measured departures—33
18:0076.3%10.2 min245245
19:00No observations———
20:00No observations———
21:00No observations———
22:00No observations———
23:00Fewer than 200 measured departures—11

Day of week

On-time departures Partial coverage: only airlines that report on-time data to the US DOT
Monday · 88.1% · 265 recorded · 261 measured · Source: the US BTS Tuesday · 84.1% · 208 recorded · 208 measured · Source: the US BTS Wednesday · 85.5% · 227 recorded · 227 measured · Source: the US BTS Thursday · 88.1% · 261 recorded · 260 measured · Source: the US BTS Friday · 89.1% · 265 recorded · 265 measured · Source: the US BTS Saturday · 86.1% · 210 recorded · 209 measured · Source: the US BTS Sunday · 79.9% · 263 recorded · 263 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 · 2.0 min · 265 recorded · 261 measured · Source: the US BTS Tuesday · 3.7 min · 208 recorded · 208 measured · Source: the US BTS Wednesday · 2.8 min · 227 recorded · 227 measured · Source: the US BTS Thursday · 1.7 min · 261 recorded · 260 measured · Source: the US BTS Friday · 2.5 min · 265 recorded · 265 measured · Source: the US BTS Saturday · 2.4 min · 210 recorded · 209 measured · Source: the US BTS Sunday · 5.6 min · 263 recorded · 263 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 · 265 · 265 recorded · 261 measured · Source: the US BTS Tuesday · 208 · 208 recorded · 208 measured · Source: the US BTS Wednesday · 227 · 227 recorded · 227 measured · Source: the US BTS Thursday · 261 · 261 recorded · 260 measured · Source: the US BTS Friday · 265 · 265 recorded · 265 measured · Source: the US BTS Saturday · 210 · 210 recorded · 209 measured · Source: the US BTS Sunday · 263 · 263 recorded · 263 measured · Source: the US BTS

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View the figures
Day of weekOn-time departuresAverage departure delayWith departure timeRecorded flights
Monday88.1%2.0 min261265
Tuesday84.1%3.7 min208208
Wednesday85.5%2.8 min227227
Thursday88.1%1.7 min260261
Friday89.1%2.5 min265265
Saturday86.1%2.4 min209210
Sunday79.9%5.6 min263263

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 · 89 recorded · 89 measured · Source: the US BTS Feb · Fewer than 200 measured departures · 72 recorded · 70 measured · Source: the US BTS Mar · Fewer than 200 measured departures · 102 recorded · 100 measured · Source: the US BTS Apr · Fewer than 200 measured departures · 131 recorded · 131 measured · Source: the US BTS May · 89.9% · 207 recorded · 207 measured · Source: the US BTS Jun · 86.5% · 238 recorded · 237 measured · Source: the US BTS Jul · 82.0% · 244 recorded · 244 measured · Source: the US BTS Aug · Fewer than 200 measured departures · 124 recorded · 124 measured · Source: the US BTS Sep · Fewer than 200 measured departures · 120 recorded · 119 measured · Source: the US BTS Oct · Fewer than 200 measured departures · 107 recorded · 107 measured · Source: the US BTS Nov · Fewer than 200 measured departures · 126 recorded · 126 measured · Source: the US BTS Dec · Fewer than 200 measured departures · 139 recorded · 139 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 · 89 recorded · 89 measured · Source: the US BTS Feb · Fewer than 200 measured departures · 72 recorded · 70 measured · Source: the US BTS Mar · Fewer than 200 measured departures · 102 recorded · 100 measured · Source: the US BTS Apr · Fewer than 200 measured departures · 131 recorded · 131 measured · Source: the US BTS May · 1.1 min · 207 recorded · 207 measured · Source: the US BTS Jun · 4.0 min · 238 recorded · 237 measured · Source: the US BTS Jul · 5.2 min · 244 recorded · 244 measured · Source: the US BTS Aug · Fewer than 200 measured departures · 124 recorded · 124 measured · Source: the US BTS Sep · Fewer than 200 measured departures · 120 recorded · 119 measured · Source: the US BTS Oct · Fewer than 200 measured departures · 107 recorded · 107 measured · Source: the US BTS Nov · Fewer than 200 measured departures · 126 recorded · 126 measured · Source: the US BTS Dec · Fewer than 200 measured departures · 139 recorded · 139 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 · 89 · 89 recorded · 89 measured · Source: the US BTS Feb · 72 · 72 recorded · 70 measured · Source: the US BTS Mar · 102 · 102 recorded · 100 measured · Source: the US BTS Apr · 131 · 131 recorded · 131 measured · Source: the US BTS May · 207 · 207 recorded · 207 measured · Source: the US BTS Jun · 238 · 238 recorded · 237 measured · Source: the US BTS Jul · 244 · 244 recorded · 244 measured · Source: the US BTS Aug · 124 · 124 recorded · 124 measured · Source: the US BTS Sep · 120 · 120 recorded · 119 measured · Source: the US BTS Oct · 107 · 107 recorded · 107 measured · Source: the US BTS Nov · 126 · 126 recorded · 126 measured · Source: the US BTS Dec · 139 · 139 recorded · 139 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—8989
FebFewer than 200 measured departures—7072
MarFewer than 200 measured departures—100102
AprFewer than 200 measured departures—131131
May89.9%1.1 min207207
Jun86.5%4.0 min237238
Jul82.0%5.2 min244244
AugFewer than 200 measured departures—124124
SepFewer than 200 measured departures—119120
OctFewer than 200 measured departures—107107
NovFewer than 200 measured departures—126126
DecFewer than 200 measured departures—139139

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 85.6% 1,454
  • Delayed >15 min 14.1% 239
  • Cancelled 0.4% 6
  • 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
AS366 SEA → MKE 212 89.6%
AS366 MKE → SEA 211 77.7%
AS323 MKE → SEA 188 86.1%
AS507 MKE → SEA 187 81.2%
AS507 SEA → MKE 156 93.0%
AS809 SEA → MKE 154 91.5%
AS242 MKE → SEA 114 91.1%
AS241 SEA → MKE 112 74.1%
AS274 SEA → MKE 59 74.1%
AS440 MKE → SEA 52 94.2%
AS307 SEA → MKE 51 76.5%
AS1380 MKE → SEA 45 97.8%
AS1381 SEA → MKE 37 91.9%
AS847 SEA → MKE 34 94.1%

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 122 +0.0% 0 85.2%
June 2026 118 −0.8% 0 89.0%
May 2026 110 +13.4% 0 86.4%
April 2026 71 +18.3% 0 95.8%
March 2026 50 +0.0% 2 90.0%
February 2026 36 +5.9% 0 83.3%
January 2026 49 +22.5% 0 75.5%
December 2025 83 +48.2% 0 80.7%
November 2025 66 +10.0% 0 84.8%
October 2025 67 +67.5% 0 88.1%
September 2025 119 1 85.7%
August 2025 124 0 82.3%
July 2025 122 0 78.7%
June 2025 119 1 84.0%
May 2025 97 0 93.8%
April 2025 60 0 90.0%
March 2025 50 0 94.0%
February 2025 34 2 88.2%
January 2025 40 0 82.5%
December 2024 56 0 80.4%
November 2024 60 0 86.7%
October 2024 40 0 90.0%

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