tailodds FORECAST
Tickets
Any day
Monday, October 5 · our forecast odds · issued Sun 9:00 PM ET · connections flying that day

Tomorrow looks like a normal day here: all 2 nonstops are 33–34% likely to arrive 15+ min late.

Nonstops that day

All 2 nonstops →
UA 1563 United Flight history → IAH 20:31 ONT 21:55 33% 10% 0.7% 79%worse than usual
F9 3131 Frontier Flight history → IAH 16:14 ONT 17:53 34% 13% 0.9% 78%worse than usual

Best connections that day, one ticket

Most reliable Quickest (80%+ on time)

Ranked by chance you reach Ontario on time, from each leg’s forecast for the day. Total trip = scheduled departure to arrival (Ontario is 2 h behind Houston). Layovers up to 4 hours. Pick a connection for its 12-month details.
UnitedDetails → IAH 06:30 → DEN 08:02UA 2643 3h 23m Denver DEN 11:25 → ONT 12:47UA 430 8h 17m 100% 85%
DeltaDetails → IAH 07:35 → SLC 09:48DL 1583 1h 33m Salt Lake City SLC 11:21 → ONT 12:10DL 3172 6h 35m 93% 82%
DeltaDetails → IAH 19:01 → SLC 21:15DL 1299 1h 44m Salt Lake City SLC 22:59 → ONT 23:48DL 1614 6h 47m 92% 77%
AmericanDetails → IAH 05:02 → DFW 06:19AA 2551 2h 07m Dallas-Fort Worth DFW 08:26 → ONT 09:49AA 1820 6h 47m 94% 76%
FrontierDetails → IAH 05:02 → LAS 06:25F9 1489 3h 33m Las Vegas LAS 09:58 → ONT 11:17F9 1283 8h 15m 100% 75%
UnitedDetails → IAH 05:22 → SFO 07:22UA 487 3h 18m San Francisco SFO 10:40 → ONT 12:12UA 2661 8h 50m 98% 74%
UnitedDetails → IAH 14:30 → ORD 17:22UA 699 2h 56m Chicago ORD 20:18 → ONT 22:51UA 658 10h 21m 94% 74%
UnitedDetails → IAH 15:30 → SFO 17:35UA 589 3h 25m San Francisco SFO 21:00 → ONT 22:37UA 552 9h 07m 97% 72%
Tight connection: often missed
AmericanDetails → IAH 16:18 → DFW 17:48AA 3583 · flown by Envoy 1h 02m Dallas-Fort Worth DFW 18:50 → ONT 19:59AA 2236 5h 41m 72% 43%
UnitedDetails → IAH 18:05 → SFO 20:10UA 1341 50m San Francisco SFO 21:00 → ONT 22:37UA 552 6h 32m 58% 43%
AmericanDetails → IAH 18:53 → DFW 20:25AA 1929 1h 02m Dallas-Fort Worth DFW 21:27 → ONT 22:32AA 711 5h 39m 63% 39%
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