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Flight Reliability

DL 332 · Delta Air Lines

Boston → Seattle (BOS–SEA)83% of its flights flew this route. The rest (ATL–FLL, LGA–SAV) are included in these numbers.

82
Pretty Reliable
WanderNerd Reliability Score
77%
Arrive within 15 minutes
5 min
Average arrival delay
0%
Cancelled
6 min early
Median arrival delay

Based on 277 historical flights. Data through May 2026.

What the data says

Morning-you made the right choice.

DL 332 departing between 9 AM–12 PM arrived on time 80% of the time, versus 59% between 6–9 PM.

Saturdays have been rough.

DL 332 arrived on time 88% of the time on Tuesdays and just 62% on Saturdays. That gap is worth planning around.

A bit ahead of the BOS–SEA route.

DL 332 arrived on time 77% of the time, versus 71% across the BOS–SEA route.

A bit behind the Delta Air Lines network.

DL 332 arrived on time 77% of the time, versus 81% across the Delta Air Lines network.

The breakdown

On-time by weekday
  • Mon73%(45 flights)
  • Tue88%(40 flights)
  • Wed85%(39 flights)
  • Thu75%(44 flights)
  • Fri79%(42 flights)
  • Sat62%(21 flights)
  • Sun73%(44 flights)
On-time by departure window
  • 9 AM–12 PM80%(229 flights)
  • 12–3 PM—(4 flights)
  • 3–6 PM—(1 flights)
  • 6–9 PM59%(41 flights)
On-time trend by month
87%
May

Jun 85% → May 87% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202585%27
July 202586%29
August 202588%25
September 202588%17
October 202588%25
November 202579%24
December 202554%26
January 202669%16
February 202670%10
March 202625%20
April 202689%26
May 202687%30
Departures on time
85%
Diverted
0.7%
Flights flown
275
Months covered
12

Same route, other flights

Keep nerding

Based on 277 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.