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Route Reliability

Seattle → Fairbanks

SEA–FAI · 1,533 miles · Seattle–Tacoma International Airport to Fairbanks International Airport

80
Pretty Reliable
WanderNerd Reliability Score
77%
Arrive within 15 minutes
5 min
Average arrival delay
1.1%
Cancelled
2,344
Flights in the data

Data through May 2026.

Who flies it best

Ranked by on-time arrivals. Historical results, not predictions.

  1. 1.Delta Air Lines81%485 flights
  2. 2.Alaska Airlines76%1,859 flights

What the data says

The late departure is the smart one here.

SEA–FAI flights departing between 9 PM–12 AM arrived on time 79% of the time, versus 72% between 12–3 PM.

Tuesday comes out ahead.

A small edge: 81% on time on Tuesdays against 74% on Thursdays.

Delta Air Lines has a slight edge here.

Delta Air Lines arrived on time 81% of the time on this route; Alaska Airlines managed 76%.

Ticking up lately.

SEA–FAI flights arrived on time 81% of the time over the last three months in the data, compared with 74% in the three months before that.

Best historical flights

Ranked by on-time arrivals, minimum 100 flights. Past performance, not a promise.

Top flights by on-time rate

More flights on this route

The breakdown

On-time by weekday
  • Mon77%(331 flights)
  • Tue81%(323 flights)
  • Wed75%(333 flights)
  • Thu74%(329 flights)
  • Fri74%(327 flights)
  • Sat80%(335 flights)
  • Sun77%(337 flights)
On-time by departure window
  • 9 AM–12 PM78%(499 flights)
  • 12–3 PM72%(340 flights)
  • 3–6 PM72%(181 flights)
  • 6–9 PM76%(359 flights)
  • 9 PM–12 AM79%(936 flights)
On-time trend by month
82%
May

Jun 64% → May 82% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202564%222
July 202568%240
August 202574%244
September 202589%235
October 202582%163
November 202589%166
December 202555%197
January 202681%184
February 202686%167
March 202674%174
April 202687%150
May 202682%173

Keep nerding

Based on 2,344 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.