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Flight Reliability

AS 317 · Alaska Airlines

Dallas–Fort Worth → Seattle (DFW–SEA)81% of its flights flew this route. The rest (SEA–RDM, SEA–DFW) are included in these numbers.

68
Usually Fine
WanderNerd Reliability Score
70%
Arrive within 15 minutes
16 min
Average arrival delay
0.9%
Cancelled
3 min
Median arrival delay

Based on 345 historical flights. Data through May 2026.

What the data says

Morning flights do better here.

AS 317 departing between 9 AM–12 PM arrived on time 80% of the time, versus 68% between 6–9 PM.

Friday is doing you no favors.

AS 317 arrived on time 80% of the time on Tuesdays and just 54% on Fridays. That gap is worth planning around.

Lagging the Alaska Airlines network.

AS 317 arrived on time 70% of the time, versus 80% across the Alaska Airlines network.

Slipping a little lately.

AS 317 arrived on time 72% of the time over the last three months in the data, compared with 75% in the three months before that.

The breakdown

On-time by weekday
  • Mon74%(50 flights)
  • Tue80%(51 flights)
  • Wed78%(50 flights)
  • Thu71%(51 flights)
  • Fri54%(50 flights)
  • Sat61%(36 flights)
  • Sun69%(51 flights)
On-time by departure window
  • 9 AM–12 PM80%(51 flights)
  • 6–9 PM68%(288 flights)
On-time trend by month
61%
May

Jun 69% → May 61% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202569%29
July 202548%31
August 202552%29
September 202573%26
October 202580%30
November 202579%29
December 202572%29
January 202669%26
February 202683%24
March 202668%28
April 202687%30
May 202661%28
Departures on time
69%
Diverted
0.9%
Flights flown
339
Months covered
12

Same route, other flights

Keep nerding

Based on 345 historical flights, because apparently we checked. Historical flight data: U.S. Bureau of Transportation Statistics, June 2025 – May 2026. Data through May 2026. How we calculate this.