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2,685 km · Domestic

Dallas Love Field (DAL) – Seattle–Tacoma (SEA)

In July 2026, 68 flights operated between Dallas Love Field and Seattle–Tacoma (both directions), and 50.0% 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 periods15 periods
PeriodFlights operated 2025Flights operated 2026Change vs last year
January46––
February40––
March4454▲ 22.7%
April4860▲ 25.0%
May2062▲ 210.0%
June6068▲ 13.3%
July68680.0%
August64––
September60––
October2–in progress
November–––
December–––

On-time departures by month

Departures within 15 minutes of schedule.

The most recent periods15 periods
PeriodOn-time departures 2025On-time departures 2026Change vs last year
January87.0%––
February62.5%––
March63.6%66.7%▲ 4.9%
April89.6%66.7%▼ 25.6%
May50.0%61.3%▲ 22.6%
June43.3%45.6%▲ 5.3%
July36.8%50.0%▲ 35.9%
August65.6%––
September61.7%––
October100.0%–in progress
November–––
December–––

Cancelled flights by month

The most recent periods15 periods
PeriodCancelled flights 2025Cancelled flights 2026Change vs last year
January2––
February0––
March20▼ 100.0%
April00–
May00–
June00–
July20▼ 100.0%
August0––
September0––
October0–in progress
November–––
December–––

Airlines on this route

  1. Southwest Airlines 61.1%
  2. Alaska Airlines 38.9%

Oct 1, 2024 – Jul 31, 2026

By direction

DAL → SEA

Scheduled flights
465
Flights operated
461
Cancelled
4 · 0.9%
On-time departures
76.6%

SEA → DAL

Scheduled flights
465
Flights operated
463
Cancelled
2 · 0.4%
On-time departures
52.3%

DAL → SEA and SEA → DAL counted separately.

Airlines on this route

Oct 1, 2024 – Jul 31, 2026
AirlineScheduled flights Share On-time departures Cancelled
Southwest Airlines WN 568 61.1% 54.9% 2
Alaska Airlines AS 362 38.9% 79.3% 4

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

Recorded flights930DAL–SEA

Departure hour

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 · 16 · 16 recorded · 16 measured · Source: the US BTS 07:00 · 112 · 112 recorded · 112 measured · Source: the US BTS 08:00 · 84 · 84 recorded · 84 measured · Source: the US BTS 09:00 · 32 · 32 recorded · 32 measured · Source: the US BTS 10:00 · 33 · 33 recorded · 33 measured · Source: the US BTS 11:00 · 81 · 81 recorded · 81 measured · Source: the US BTS 12:00 · 116 · 116 recorded · 114 measured · Source: the US BTS 13:00 · 40 · 40 recorded · 40 measured · Source: the US BTS 14:00 · 143 · 143 recorded · 143 measured · Source: the US BTS 15:00 · 82 · 82 recorded · 82 measured · Source: the US BTS 16:00 · 13 · 13 recorded · 13 measured · Source: the US BTS 17:00 · 15 · 15 recorded · 15 measured · Source: the US BTS 18:00 · 42 · 42 recorded · 42 measured · Source: the US BTS 19:00 · 105 · 105 recorded · 102 measured · Source: the US BTS 20:00 · 7 · 7 recorded · 7 measured · Source: the US BTS 21:00 · 9 · 9 recorded · 8 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.

No bucket in this view has 200 measured departures yet. Flight counts are shown; on-time and delay charts become available when the sample is large enough.

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—1616
07:00Fewer than 200 measured departures—112112
08:00Fewer than 200 measured departures—8484
09:00Fewer than 200 measured departures—3232
10:00Fewer than 200 measured departures—3333
11:00Fewer than 200 measured departures—8181
12:00Fewer than 200 measured departures—114116
13:00Fewer than 200 measured departures—4040
14:00Fewer than 200 measured departures—143143
15:00Fewer than 200 measured departures—8282
16:00Fewer than 200 measured departures—1313
17:00Fewer than 200 measured departures—1515
18:00Fewer than 200 measured departures—4242
19:00Fewer than 200 measured departures—102105
20:00Fewer than 200 measured departures—77
21:00Fewer than 200 measured departures—89
22:00No observations———
23:00No observations———

Day of week

Recorded flights Partial coverage: only airlines that report on-time data to the US DOT
Monday · 138 · 138 recorded · 138 measured · Source: the US BTS Tuesday · 108 · 108 recorded · 107 measured · Source: the US BTS Wednesday · 138 · 138 recorded · 138 measured · Source: the US BTS Thursday · 136 · 136 recorded · 134 measured · Source: the US BTS Friday · 138 · 138 recorded · 138 measured · Source: the US BTS Saturday · 134 · 134 recorded · 133 measured · Source: the US BTS Sunday · 138 · 138 recorded · 136 measured · Source: the US BTS

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

No bucket in this view has 200 measured departures yet. Flight counts are shown; on-time and delay charts become available when the sample is large enough.

View the figures
Day of weekOn-time departuresAverage departure delayWith departure timeRecorded flights
MondayFewer than 200 measured departures—138138
TuesdayFewer than 200 measured departures—107108
WednesdayFewer than 200 measured departures—138138
ThursdayFewer than 200 measured departures—134136
FridayFewer than 200 measured departures—138138
SaturdayFewer than 200 measured departures—133134
SundayFewer than 200 measured departures—136138

Month of year

Months combine the same calendar month across the years shown; this is a seasonal pattern, not a monthly time series.

Recorded flights Partial coverage: only airlines that report on-time data to the US DOT
Jan · 48 · 48 recorded · 46 measured · Source: the US BTS Feb · 40 · 40 recorded · 40 measured · Source: the US BTS Mar · 100 · 100 recorded · 98 measured · Source: the US BTS Apr · 108 · 108 recorded · 108 measured · Source: the US BTS May · 82 · 82 recorded · 82 measured · Source: the US BTS Jun · 128 · 128 recorded · 128 measured · Source: the US BTS Jul · 138 · 138 recorded · 136 measured · Source: the US BTS Aug · 64 · 64 recorded · 64 measured · Source: the US BTS Sep · 60 · 60 recorded · 60 measured · Source: the US BTS Oct · 42 · 42 recorded · 42 measured · Source: the US BTS Nov · 58 · 58 recorded · 58 measured · Source: the US BTS Dec · 62 · 62 recorded · 62 measured · Source: the US BTS

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

No bucket in this view has 200 measured departures yet. Flight counts are shown; on-time and delay charts become available when the sample is large enough.

View the figures
Month of yearOn-time departuresAverage departure delayWith departure timeRecorded flights
JanFewer than 200 measured departures—4648
FebFewer than 200 measured departures—4040
MarFewer than 200 measured departures—98100
AprFewer than 200 measured departures—108108
MayFewer than 200 measured departures—8282
JunFewer than 200 measured departures—128128
JulFewer than 200 measured departures—136138
AugFewer than 200 measured departures—6464
SepFewer than 200 measured departures—6060
OctFewer than 200 measured departures—4242
NovFewer than 200 measured departures—5858
DecFewer than 200 measured departures—6262

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 64.0% 595
  • Delayed >15 min 35.4% 329
  • Cancelled 0.6% 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

11
11 of 11
Flight numbersBy direction DeparturesOn time
AS588 SEA → DAL 181 81.0%
AS589 DAL → SEA 181 77.7%
WN1387 DAL → SEA 60 53.5%
WN3389 SEA → DAL 58 37.9%
WN978 DAL → SEA 58 93.1%
WN1404 SEA → DAL 57 12.3%
WN4251 SEA → DAL 57 45.6%
WN1874 SEA → DAL 44 18.2%
WN1406 DAL → SEA 34 73.5%
WN173 DAL → SEA 33 87.9%
WN3320 SEA → DAL 33 39.4%

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 68 +0.0% 0 50.0%
June 2026 68 +13.3% 0 45.6%
May 2026 62 +210.0% 0 61.3%
April 2026 60 +25.0% 0 66.7%
March 2026 54 +22.7% 0 66.7%
October 2025 2 −95.0% 0 100.0%
September 2025 60 0 61.7%
August 2025 64 0 65.6%
July 2025 68 2 36.8%
June 2025 60 0 43.3%
May 2025 20 0 50.0%
April 2025 48 0 89.6%
March 2025 44 2 63.6%
February 2025 40 0 62.5%
January 2025 46 2 87.0%
December 2024 62 0 77.4%
November 2024 58 0 86.2%
October 2024 40 0 100.0%

How to read this chart

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