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Monday, October 5 · our forecast odds · issued Sun 2:00 PM ET · 35 nonstops

Tomorrow: DL 5710 at 06:00 is the safest bet, 5% chance of being 15+ min late; evening flights run 18–46%.

Safest bet that day DL 5710 DCA 06:00 → BOS 07:45 · 5% chance 15+ min late · usually 93% on time Riskiest B6 2954 DCA 17:00 → BOS 18:42 · 46% chance 15+ min late · usually 49% on time
Against a calm day 23% average chance a nonstop arrives 15+ min late; 16% for the same flights on a calm-weather day

Every nonstop on Mon, Oct 5

12-month record →

Ranked by the chance of arriving 15+ minutes late, with each flight’s on-time record over Aug 2025 – Jul 2026 beside it. Times are local. Pick a flight for its forecast. Click a column to sort.

DL 5710 Delta flown by Republic Flight history → DCA 06:00 BOS 07:45 5% 2% 0.8% 93%
DL 5698 Delta flown by Republic Flight history → DCA 06:59 BOS 08:41 6% 2% 0.7% 92%
YX 4789 Republic DCA 06:24 BOS 08:17 6% 3% 0.8% no record
AA 1550 American Flight history → DCA 06:00 BOS 07:39 8% 3% 1.3% 97%
AA 1605 American Flight history → DCA 06:55 BOS 08:34 10% 3% 1.2% 98%
AA 4691 American flown by Republic Flight history → DCA 09:41 BOS 11:25 11% 3% 0.7% 89%
DL 5687 Delta flown by Republic Flight history → DCA 08:29 BOS 10:15 11% 3% 0.7% 88%
DL 5611 Delta flown by Republic Flight history → DCA 10:05 BOS 11:48 11% 3% 0.7% 85%
DL 5852 Delta flown by Republic Flight history → DCA 10:14 BOS 11:52 13% 3% 0.7% 85%
AA 4505 American flown by Republic Flight history → DCA 09:54 BOS 11:46 13% 3% 0.7% 82%
AA 3235 American DCA 06:56 BOS 08:30 13% 4% 1.2% no record
DL 5693 Delta flown by Republic Flight history → DCA 11:47 BOS 13:27 14% 4% 0.7% 84%
DL 5592 Delta flown by Republic Flight history → DCA 12:55 BOS 14:40 17% 5% 0.7% 82%
AA 1164 American DCA 07:57 BOS 09:31 18% 4% 1.0% no record
AA 4380 American flown by Republic Flight history → DCA 12:59 BOS 14:44 18% 5% 0.7% 72%
DL 5633 Delta flown by Republic Flight history → DCA 22:00 BOS 23:42 18% 7% 0.8% 67%
AA 4494 American flown by Republic Flight history → DCA 12:56 BOS 14:34 19% 5% 0.7% 88%
B6 554 JetBlue Flight history → DCA 08:44 BOS 10:20 22% 6% 0.7% 88%worse than usual
AA 4382 American flown by Republic Flight history → DCA 20:59 BOS 22:40 22% 8% 0.8% 67%
AA 1582 American Flight history → DCA 10:25 BOS 11:58 22% 6% 0.9% 77%
AA 1015 American Flight history → DCA 10:27 BOS 12:01 23% 6% 0.9% 75%
DL 5600 Delta flown by Republic Flight history → DCA 15:15 BOS 17:02 26% 10% 0.7% 61%
DL 5689 Delta flown by Republic Flight history → DCA 18:30 BOS 20:29 26% 13% 0.8% 62%
AA 4051 American flown by Envoy Flight history → DCA 22:30 BOS 23:59 27% 8% 1.3% 58%
B6 2454 JetBlue Flight history → DCA 11:00 BOS 12:35 30% 11% 0.7% 82%worse than usual
DL 5839 Delta flown by Republic Flight history → DCA 17:00 BOS 18:54 31% 13% 0.8% 50%
B6 754 JetBlue DCA 12:19 BOS 13:54 33% 14% 0.7% no record
AA 1557 American Flight history → DCA 14:59 BOS 16:42 37% 10% 0.8% 59%
B6 1254 JetBlue Flight history → DCA 13:25 BOS 14:59 39% 17% 0.7% 68%
AA 945 American DCA 14:56 BOS 16:30 39% 10% 0.9% no record
B6 1354 JetBlue Flight history → DCA 14:25 BOS 16:00 41% 22% 0.7% 49%
AA 3207 American Flight history → DCA 17:00 BOS 18:47 41% 14% 0.9% 43%
B6 1854 JetBlue Flight history → DCA 19:59 BOS 21:38 43% 21% 0.8% 66%
B6 2754 JetBlue Flight history → DCA 17:59 BOS 19:41 46% 26% 0.8% 50%
B6 2954 JetBlue Flight history → DCA 17:00 BOS 18:42 46% 25% 0.8% 49%
How these are worked out. Each flight’s odds are our forecast for that day; flights of airlines we don’t forecast yet use their 12-month record and are marked. Makes the connection: the first flight’s 12-month lateness curve, scaled so its chance of arriving 15+ min late matches the day’s forecast, at the layover minus the 45-minute minimum (90 on separate tickets). Arrives on time: first flight not cancelled × connection made × second flight not cancelled × second flight within 15 minutes, each from the day’s forecast.

About this data: forecast odds from our model for Mon, Oct 5 (newest published update); 12-month records from US DOT on-time data, Aug 2025 – Jul 2026, all US airlines; regional flights count under the airline that sells them. JSON