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Flight Reliability

AS 516 · Alaska Airlines

Seattle → Fort Lauderdale (SEA–FLL)

85
Pretty Reliable
WanderNerd Reliability Score
83%
Arrive within 15 minutes
2 min early
Average arrival delay
0.6%
Cancelled
9 min early
Median arrival delay

Based on 346 historical flights. Data through May 2026.

What the data says

Mondays have been rough.

AS 516 arrived on time 96% of the time on Wednesdays and just 76% on Mondays. That gap is worth planning around.

A bit ahead of the SEA–FLL route.

AS 516 arrived on time 83% of the time, versus 78% across the SEA–FLL route.

A bit ahead of the Alaska Airlines network.

AS 516 arrived on time 83% of the time, versus 80% across the Alaska Airlines network.

Trending in the right direction.

AS 516 arrived on time 91% of the time over the last three months in the data, compared with 77% in the three months before that.

The breakdown

On-time by weekday
  • Mon76%(49 flights)
  • Tue90%(48 flights)
  • Wed96%(48 flights)
  • Thu82%(49 flights)
  • Fri84%(49 flights)
  • Sat78%(49 flights)
  • Sun80%(49 flights)
On-time by departure window
  • 6–9 AM83%(339 flights)
  • 9 AM–12 PM—(2 flights)
On-time trend by month
100%
May

Jun 83% → May 100% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202583%30
July 202582%28
August 202581%31
September 202590%29
October 202590%31
November 202580%30
December 202565%31
January 202683%30
February 202682%28
March 202681%31
April 202693%30
May 2026100%12
Departures on time
86%
Diverted
0.9%
Flights flown
341
Months covered
12

Same route, other flights

Keep nerding

Based on 346 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.