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Showing Delta only (incl. its regional partners)All airlines ×
429 nonstop flights · Aug 2025 – Jul 2026 · US DOT on-time records, all US airlines

The nonstop is quickest: Delta PHX → BOS (4h 58m), on time 77% of the time. Delta via Atlanta (8h 15m) is more reliable, 89%, but takes 3h 17m longer.

Best time to leave 10–11 pm 86% arrive on time from PHX
Best single flight DL 514 PHX 11:06 → BOS 19:06 · 70% on time

Time of day × airport

Share of this route’s flights leaving within 15 minutes, by airport and scheduled departure hour, over Aug 2025 – Jul 2026. Blank: no flights then (or fewer than 40 in the year).

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% of this route’s flights leaving within 15 min (small number: flights in the Jun 6 – Jul 31, 2026 schedule): 85+75–8465–7455–64under 55

Pick an hour to see this route’s flights leaving then.

Flights, best and worst

Flights in the Jun 6 – Jul 31, 2026 schedule that ran 150+ times in the year. Times are local. Pick a flight for its history.

DL 514 PHX 11:06 BOS 19:06 70%

All 3 Delta flights in the current schedule

Every flight that flew in the Jun 6 – Jul 31, 2026 schedule, with its record over Aug 2025 – Jul 2026. Times are local. Click a column to sort.

DL 514 PHX 11:06 BOS 19:06 5h 00m 164 70% 1.2% 93 min
DL 540 PHX 22:27 BOS 06:25 4h 58m 31 90% 0.0% 253 min
DL 1697 PHX 22:32 BOS 06:30 4h 58m 66 86% 3.0% 129 min

Nonstops by airline and airport

Arriving within 15 minutes, Aug 2025 – Jul 2026. Pick a row to see that airline’s flights on that airport pair.

Delta PHX BOS 4h 58m 78% 2.1% 429 Flying now

Alternatives with one stop

All connections →
DeltaDetails → PHX 23:04 → DTW 05:46DL 1566 1h 19m Detroit DTW 07:05 → BOS 09:07 +1DL 1163 7h 03m 84% 74%
DeltaDetails → PHX 11:51 → MSP 16:56DL 2208 1h 14m Minneapolis MSP 18:10 → BOS 21:59DL 1502 7h 10m 95% 69%
DeltaDetails → PHX 06:00 → DTW 12:48DL 947 1h 13m Detroit DTW 14:01 → BOS 16:10DL 1171 7h 10m 95% 66%
Flying on a particular day? Pick a date above and the same ranking uses our forecast odds for each flight that day: Tomorrow.

About this data: US DOT on-time records, Aug 2025 – Jul 2026, all US airlines; regional flights count under the airline that sells them. Schedules (which flights and connections exist, and their times) are as of Jun 6 – Jul 31, 2026; seasonal flights outside that window aren’t ranked. Rebuilt monthly. JSON