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3,093 km · Domestic

Detroit Metropolitan Wayne County (DTW) – Seattle–Tacoma (SEA)

In July 2026, 427 flights operated between Detroit Metropolitan Wayne County and Seattle–Tacoma (both directions), and 78.5% 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 periods19 periods
PeriodFlights operated 2025Flights operated 2026Change vs last year
January244264▲ 8.2%
February214248▲ 15.9%
March282292▲ 3.5%
April294311▲ 5.8%
May394408▲ 3.6%
June434418▼ 3.7%
July447427▼ 4.5%
August424––
September352––
October316–in progress
November309––
December324––
Year to date (Jan–Jul)2,3092,368▲ 2.6%

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
January82.4%75.4%▼ 8.5%
February82.7%83.5%▲ 1.0%
March87.2%80.5%▼ 7.7%
April86.1%87.8%▲ 2.0%
May86.0%80.4%▼ 6.5%
June80.2%82.5%▲ 2.9%
July77.9%78.5%▲ 0.8%
August79.0%––
September87.5%––
October89.2%–in progress
November81.6%––
December67.3%––
Year-to-date average (Jan–Jul)83.2%81.2%▼ 2.4%

Cancelled flights by month

The most recent periods19 periods
PeriodCancelled flights 2025Cancelled flights 2026Change vs last year
January04–
February220.0%
March010–
April00–
May02–
June20▼ 100.0%
July95▼ 44.4%
August4––
September0––
October0–in progress
November0––
December4––
Year to date (Jan–Jul)1323▲ 76.9%

Airlines on this route

  1. Delta Air Lines 74.7%
  2. Alaska Airlines 25.3%

Oct 1, 2024 – Jul 31, 2026

By direction

DTW → SEA

Scheduled flights
3,625
Flights operated
3,603
Cancelled
22 · 0.6%
On-time departures
79.9%

SEA → DTW

Scheduled flights
3,621
Flights operated
3,599
Cancelled
22 · 0.6%
On-time departures
84.6%

DTW → SEA and SEA → DTW counted separately.

Airlines on this route

Oct 1, 2024 – Jul 31, 2026
AirlineScheduled flights Share On-time departures Cancelled
Delta Air Lines DL 5,414 74.7% 83.3% 41
Alaska Airlines AS 1,832 25.3% 79.1% 3

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 delay06:00–07:001.1min · 696 recorded · 694 measured
Gap to highest-delay hour21.7min06:00 ↔ 20:00
Recorded flights7,246DTW–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 · Fewer than 200 measured departures · 142 recorded · 138 measured · Source: the US BTS 06:00 · 93.5% · 696 recorded · 694 measured · Source: the US BTS 07:00 · 70.7% · 243 recorded · 242 measured · Source: the US BTS 08:00 · 88.5% · 1,108 recorded · 1,101 measured · Source: the US BTS 09:00 · 85.8% · 483 recorded · 480 measured · Source: the US BTS 10:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 11:00 · 83.8% · 442 recorded · 439 measured · Source: the US BTS 12:00 · 84.8% · 662 recorded · 659 measured · Source: the US BTS 13:00 · 80.9% · 237 recorded · 235 measured · Source: the US BTS 14:00 · Fewer than 200 measured departures · 56 recorded · 56 measured · Source: the US BTS 15:00 · 80.9% · 423 recorded · 419 measured · Source: the US BTS 16:00 · 80.1% · 783 recorded · 782 measured · Source: the US BTS 17:00 · 79.9% · 283 recorded · 283 measured · Source: the US BTS 18:00 · Fewer than 200 measured departures · 119 recorded · 118 measured · Source: the US BTS 19:00 · Fewer than 200 measured departures · 85 recorded · 85 measured · Source: the US BTS 20:00 · 65.4% · 515 recorded · 509 measured · Source: the US BTS 21:00 · Fewer than 200 measured departures · 191 recorded · 191 measured · Source: the US BTS 22:00 · 76.7% · 237 recorded · 236 measured · Source: the US BTS 23:00 · 79.3% · 541 recorded · 535 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 · 142 recorded · 138 measured · Source: the US BTS 06:00 · 1.1 min · 696 recorded · 694 measured · Source: the US BTS 07:00 · 12.1 min · 243 recorded · 242 measured · Source: the US BTS 08:00 · 4.3 min · 1,108 recorded · 1,101 measured · Source: the US BTS 09:00 · 6.0 min · 483 recorded · 480 measured · Source: the US BTS 10:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 11:00 · 8.9 min · 442 recorded · 439 measured · Source: the US BTS 12:00 · 8.2 min · 662 recorded · 659 measured · Source: the US BTS 13:00 · 10.8 min · 237 recorded · 235 measured · Source: the US BTS 14:00 · Fewer than 200 measured departures · 56 recorded · 56 measured · Source: the US BTS 15:00 · 8.1 min · 423 recorded · 419 measured · Source: the US BTS 16:00 · 9.6 min · 783 recorded · 782 measured · Source: the US BTS 17:00 · 8.6 min · 283 recorded · 283 measured · Source: the US BTS 18:00 · Fewer than 200 measured departures · 119 recorded · 118 measured · Source: the US BTS 19:00 · Fewer than 200 measured departures · 85 recorded · 85 measured · Source: the US BTS 20:00 · 22.8 min · 515 recorded · 509 measured · Source: the US BTS 21:00 · Fewer than 200 measured departures · 191 recorded · 191 measured · Source: the US BTS 22:00 · 11.6 min · 237 recorded · 236 measured · Source: the US BTS 23:00 · 10.2 min · 541 recorded · 535 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 · 142 · 142 recorded · 138 measured · Source: the US BTS 06:00 · 696 · 696 recorded · 694 measured · Source: the US BTS 07:00 · 243 · 243 recorded · 242 measured · Source: the US BTS 08:00 · 1,108 · 1,108 recorded · 1,101 measured · Source: the US BTS 09:00 · 483 · 483 recorded · 480 measured · Source: the US BTS 10:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 11:00 · 442 · 442 recorded · 439 measured · Source: the US BTS 12:00 · 662 · 662 recorded · 659 measured · Source: the US BTS 13:00 · 237 · 237 recorded · 235 measured · Source: the US BTS 14:00 · 56 · 56 recorded · 56 measured · Source: the US BTS 15:00 · 423 · 423 recorded · 419 measured · Source: the US BTS 16:00 · 783 · 783 recorded · 782 measured · Source: the US BTS 17:00 · 283 · 283 recorded · 283 measured · Source: the US BTS 18:00 · 119 · 119 recorded · 118 measured · Source: the US BTS 19:00 · 85 · 85 recorded · 85 measured · Source: the US BTS 20:00 · 515 · 515 recorded · 509 measured · Source: the US BTS 21:00 · 191 · 191 recorded · 191 measured · Source: the US BTS 22:00 · 237 · 237 recorded · 236 measured · Source: the US BTS 23:00 · 541 · 541 recorded · 535 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—138142
06:0093.5%1.1 min694696
07:0070.7%12.1 min242243
08:0088.5%4.3 min1,1011,108
09:0085.8%6.0 min480483
10:00No observations———
11:0083.8%8.9 min439442
12:0084.8%8.2 min659662
13:0080.9%10.8 min235237
14:00Fewer than 200 measured departures—5656
15:0080.9%8.1 min419423
16:0080.1%9.6 min782783
17:0079.9%8.6 min283283
18:00Fewer than 200 measured departures—118119
19:00Fewer than 200 measured departures—8585
20:0065.4%22.8 min509515
21:00Fewer than 200 measured departures—191191
22:0076.7%11.6 min236237
23:0079.3%10.2 min535541

Day of week

On-time departures Partial coverage: only airlines that report on-time data to the US DOT
Monday · 83.1% · 1,068 recorded · 1,056 measured · Source: the US BTS Tuesday · 87.3% · 1,008 recorded · 1,003 measured · Source: the US BTS Wednesday · 84.1% · 1,031 recorded · 1,029 measured · Source: the US BTS Thursday · 82.1% · 1,055 recorded · 1,054 measured · Source: the US BTS Friday · 79.4% · 1,075 recorded · 1,070 measured · Source: the US BTS Saturday · 81.5% · 939 recorded · 930 measured · Source: the US BTS Sunday · 78.5% · 1,070 recorded · 1,060 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 · 8.9 min · 1,068 recorded · 1,056 measured · Source: the US BTS Tuesday · 5.9 min · 1,008 recorded · 1,003 measured · Source: the US BTS Wednesday · 7.5 min · 1,031 recorded · 1,029 measured · Source: the US BTS Thursday · 7.6 min · 1,055 recorded · 1,054 measured · Source: the US BTS Friday · 11.1 min · 1,075 recorded · 1,070 measured · Source: the US BTS Saturday · 8.4 min · 939 recorded · 930 measured · Source: the US BTS Sunday · 11.8 min · 1,070 recorded · 1,060 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 · 1,068 · 1,068 recorded · 1,056 measured · Source: the US BTS Tuesday · 1,008 · 1,008 recorded · 1,003 measured · Source: the US BTS Wednesday · 1,031 · 1,031 recorded · 1,029 measured · Source: the US BTS Thursday · 1,055 · 1,055 recorded · 1,054 measured · Source: the US BTS Friday · 1,075 · 1,075 recorded · 1,070 measured · Source: the US BTS Saturday · 939 · 939 recorded · 930 measured · Source: the US BTS Sunday · 1,070 · 1,070 recorded · 1,060 measured · Source: the US BTS

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View the figures
Day of weekOn-time departuresAverage departure delayWith departure timeRecorded flights
Monday83.1%8.9 min1,0561,068
Tuesday87.3%5.9 min1,0031,008
Wednesday84.1%7.5 min1,0291,031
Thursday82.1%7.6 min1,0541,055
Friday79.4%11.1 min1,0701,075
Saturday81.5%8.4 min930939
Sunday78.5%11.8 min1,0601,070

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 · 78.7% · 512 recorded · 508 measured · Source: the US BTS Feb · 83.1% · 466 recorded · 462 measured · Source: the US BTS Mar · 83.8% · 584 recorded · 574 measured · Source: the US BTS Apr · 86.9% · 605 recorded · 605 measured · Source: the US BTS May · 83.2% · 804 recorded · 802 measured · Source: the US BTS Jun · 81.3% · 854 recorded · 852 measured · Source: the US BTS Jul · 78.2% · 888 recorded · 874 measured · Source: the US BTS Aug · 79.0% · 428 recorded · 424 measured · Source: the US BTS Sep · 87.5% · 352 recorded · 352 measured · Source: the US BTS Oct · 88.0% · 516 recorded · 516 measured · Source: the US BTS Nov · 84.9% · 603 recorded · 603 measured · Source: the US BTS Dec · 76.0% · 634 recorded · 630 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 · 11.9 min · 512 recorded · 508 measured · Source: the US BTS Feb · 5.7 min · 466 recorded · 462 measured · Source: the US BTS Mar · 7.8 min · 584 recorded · 574 measured · Source: the US BTS Apr · 6.4 min · 605 recorded · 605 measured · Source: the US BTS May · 10.3 min · 804 recorded · 802 measured · Source: the US BTS Jun · 9.6 min · 854 recorded · 852 measured · Source: the US BTS Jul · 11.4 min · 888 recorded · 874 measured · Source: the US BTS Aug · 7.9 min · 428 recorded · 424 measured · Source: the US BTS Sep · 6.5 min · 352 recorded · 352 measured · Source: the US BTS Oct · 3.5 min · 516 recorded · 516 measured · Source: the US BTS Nov · 6.4 min · 603 recorded · 603 measured · Source: the US BTS Dec · 13.4 min · 634 recorded · 630 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 · 512 · 512 recorded · 508 measured · Source: the US BTS Feb · 466 · 466 recorded · 462 measured · Source: the US BTS Mar · 584 · 584 recorded · 574 measured · Source: the US BTS Apr · 605 · 605 recorded · 605 measured · Source: the US BTS May · 804 · 804 recorded · 802 measured · Source: the US BTS Jun · 854 · 854 recorded · 852 measured · Source: the US BTS Jul · 888 · 888 recorded · 874 measured · Source: the US BTS Aug · 428 · 428 recorded · 424 measured · Source: the US BTS Sep · 352 · 352 recorded · 352 measured · Source: the US BTS Oct · 516 · 516 recorded · 516 measured · Source: the US BTS Nov · 603 · 603 recorded · 603 measured · Source: the US BTS Dec · 634 · 634 recorded · 630 measured · Source: the US BTS

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View the figures
Month of yearOn-time departuresAverage departure delayWith departure timeRecorded flights
Jan78.7%11.9 min508512
Feb83.1%5.7 min462466
Mar83.8%7.8 min574584
Apr86.9%6.4 min605605
May83.2%10.3 min802804
Jun81.3%9.6 min852854
Jul78.2%11.4 min874888
Aug79.0%7.9 min424428
Sep87.5%6.5 min352352
Oct88.0%3.5 min516516
Nov84.9%6.4 min603603
Dec76.0%13.4 min630634

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 81.7% 5,922
  • Delayed >15 min 17.7% 1,280
  • Cancelled 0.6% 44
  • 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

24
24 of 24
Flight numbersBy direction DeparturesOn time
DL734 DTW → SEA 658 88.7%
DL812 SEA → DTW 658 94.6%
DL728 DTW → SEA 656 86.1%
DL810 SEA → DTW 652 79.8%
DL565 DTW → SEA 605 66.4%
DL944 DTW → SEA 543 77.6%
DL533 SEA → DTW 488 83.5%
AS313 SEA → DTW 435 84.6%
DL1706 SEA → DTW 411 82.1%
AS313 DTW → SEA 393 75.0%
DL2324 SEA → DTW 213 90.1%
AS304 SEA → DTW 206 87.4%
AS304 DTW → SEA 205 86.3%
AS381 DTW → SEA 186 74.6%
AS380 SEA → DTW 142 71.8%
DL758 SEA → DTW 121 88.4%
DL814 DTW → SEA 119 91.5%
DL732 DTW → SEA 91 82.2%
AS343 SEA → DTW 51 74.5%
AS344 DTW → SEA 51 60.8%
DL789 SEA → DTW 37 86.5%
DL2434 SEA → DTW 35 68.6%
DL842 SEA → DTW 34 79.4%
DL2157 DTW → SEA 32 93.8%

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 427 −4.5% 5 78.5%
June 2026 418 −3.7% 0 82.5%
May 2026 408 +3.6% 2 80.4%
April 2026 311 +5.8% 0 87.8%
March 2026 292 +3.5% 10 80.5%
February 2026 248 +15.9% 2 83.5%
January 2026 264 +8.2% 4 75.4%
December 2025 324 +5.9% 4 67.3%
November 2025 309 +5.1% 0 81.6%
October 2025 316 +58.0% 0 89.2%
September 2025 352 0 87.5%
August 2025 424 4 79.0%
July 2025 447 9 77.9%
June 2025 434 2 80.2%
May 2025 394 0 86.0%
April 2025 294 0 86.1%
March 2025 282 0 87.2%
February 2025 214 2 82.7%
January 2025 244 0 82.4%
December 2024 306 0 85.3%
November 2024 294 0 88.4%
October 2024 200 0 86.0%

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