PlainFlights

Route · SEA → DFW · 2020–2025 BTS data

Seattle to Dallas/Fort Worth

According to PlainFlights' route traffic ranking (BTS On-Time Performance total flights), SEA to DFW (Seattle to Dallas/Fort Worth) ranks #225 of 4927 tracked domestic routes by total flights (most flights = #1).

Data updated 2026-06-13

78.9%
On-time
-0.1 pts
vs US avg
81 min
Delay when late
24,433
Flights
#225 of 4927
Corpus placement

Cancelled

1.7%

Best Month

Jan 2025 85%

Worst Month

Jun 2025 62%

Distance

1,660 mi

Carriers

12

Monthly Performance

Recent 24 months of route data.

Period Flights Delayed Cancelled Diverted Carriers
Dec 2025 455 115 3 1 DL,F9,AS,AA
Nov 2025 411 80 7 9 DL,F9,AA,AS
Oct 2025 442 78 3 1 AA,AS,DL,F9
Sep 2025 430 81 6 2 DL,AA,AS
Aug 2025 476 125 13 6 AA,F9,AS,DL
Jul 2025 505 174 8 2 AA,AS,DL,F9
Jun 2025 495 186 13 3 AA,AS,DL,F9
May 2025 472 110 7 1 AA,AS,DL,F9
Apr 2025 419 135 6 6 DL,F9,AA,AS
Mar 2025 425 84 4 2 AA,AS,DL,F9
Feb 2025 356 60 2 2 AA,AS,DL,F9
Jan 2025 405 59 15 3 AA,AS,DL,F9
Dec 2024 445 92 8 5 AA,AS,DL,F9
Nov 2024 424 102 6 3 AS,DL,F9,AA
Oct 2024 489 92 1 2 AS,DL,F9,AA
Sep 2024 484 133 1 2 AA,AS,DL,F9
Aug 2024 528 165 4 1 AA,AS,DL,F9
Jul 2024 520 147 9 1 AA,AS,DL,F9
Jun 2024 450 114 6 5 AA,AS,F9
May 2024 399 112 24 4 AA,AS
Apr 2024 316 69 4 0 AA,AS
Mar 2024 333 65 5 4 AA,AS
Feb 2024 302 53 0 0 AA,AS
Jan 2024 320 72 22 1 AA,AS

SEA–DFW seasonal on-time pattern

Best: February (84.0%) · weakest: June (71.0%)

70%75%80%85% JanFebMarAprMayJunJulAugSepOctNovDec 77.6%

Strongest calendar month

February

84.0% on-time · ~268 flights/mo

Busiest calendar month

August

~405 flights/mo avg

Weakest calendar month

June

71.0% on-time · ~365 flights/mo

Cancellation Rate

1.7%

177 of 10,301 flights

Diversion Rate

0.6%

66 of 10,301 flights

Explore origin & destination

On-time and delay data for the airports this route connects.

SEA - Seattle

Full on-time, delay-cause, and seasonal performance for Seattle, WA.

SEA on-time profile

DFW - Dallas/Fort Worth

Full on-time, delay-cause, and seasonal performance for Dallas/Fort Worth, TX.

DFW on-time profile

Compare the two airports

See SEA and DFW side by side on delays, cancellations, and reliability.

Compare SEA vs DFW

Origin-hub reliability standing

Mid-pack among SEA departures

From SEA, this corridor sits with 63 other 75–85% on-time routes out of 89 tracked departures, not the hub's reliability leaders (25 at ≥85%) and not the softest ( 1 below 75%). Destination: Dallas/Fort Worth · fleet on-time rank #3564 of 4927.

What the Data Says About SEA to DFW

24,433 tracked flights put the SEA to DFW pairing (Seattle to Dallas/Fort Worth) at a 78.9% on-time rate, squarely in line with the wider network. Delays that do occur run 80.7 minutes on average. Across the 1,660-mile route and its 12 carriers, the trailing 24 months show 1.7% cancelled and 0.6% diverted (10,301 flights sampled).

The monthly split is wide on this route: Jan 2025 posted the strongest performance at 85% on-time, while Jun 2025 came in at just 62% - a 23-point swing worth factoring into travel timing.

On the multi-year calendar, SEA–DFW peaks in February at 84.0% on-time while August carries the heaviest traffic (~405 flights per month) ; the softest month is June at 71.0%, a 13.0-point swing that repeats because the corridor's weather and holiday mix stays stable year to year.

Frequently Asked Questions

Where does SEA to DFW rank among US routes by traffic? ▼
According to PlainFlights' route traffic ranking, SEA to DFW ranks #225 of 4927 tracked domestic routes by total flights (most flights = #1). That ordinal matches our busiest-routes listing (total_flights DESC). See /methodology#corpus-placement for the exact sort basis.
How often are flights delayed from SEA to DFW? ▼
Flights from Seattle to Dallas/Fort Worth have a 78.9% on-time rate based on 24,433 flights. The average delay is 80.7 minutes. The best recent month was Jan 2025 with 85% on-time.
What is the cancellation rate for SEA to DFW? ▼
Over the last 24 months, 1.7% of flights on this route were cancelled (177 of 10,301 flights) and 0.6% were diverted.
How far is the flight from SEA to DFW? ▼
The flight distance from Seattle (SEA) to Dallas/Fort Worth (DFW) is approximately 1,660 miles. This route is served by 12 carriers.
When is the best time to fly from SEA to DFW? ▼
The best recent month for on-time performance was Jan 2025 (85% on-time). The worst was Jun 2025 (62% on-time). Consider booking during months with historically better performance.

Airports on this route

SEA Airport

Seattle
DFW Airport

Dallas/Fort Worth
Data source

Data Source: Bureau of Transportation Statistics (BTS), On-Time Performance Data. Statistics reflect cumulative performance across all available reporting periods.

Read our methodology - how this data is sourced, computed, and verified.

Using SEA–DFW data

SEA–DFW is mid-pack at 78.9% on-time; month and carrier mix move more than the corridor headline.

  • Compare SEA and DFW airport profiles: delay causes and top routes differ even on the same corridor. SEA airport
  • If your dates flex, February (84.0% on-time) beats June (71.0%) on this corridor. Seasonal chart
  • 4 other routes post a similar 78.9% on-time rate; compare before you commit to this pairing. Similar routes

On-time rate reflects the BTS historical average across all reporting carriers on this origin–destination pair, not any single flight or booking recommendation.

Data sourced from U.S. Department of Transportation Bureau of Transportation Statistics (BTS) On-Time Performance data. See our methodology for details. Retrieved and formatted by PlainFlights

Every figure on PlainFlights is rendered directly from BTS On-Time Performance data, no number is typed in by an editor. This page aggregates this specific route's on-time performance and monthly trend, live from the dataset. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.