IAD to PBI flight delays
Washington, VA (IAD) West Palm Beach/Palm Beach, FL (PBI) · 859 miles
374 flights · July 2024 – July 2026 · US Bureau of Transportation Statistics
81.52%
Arrived on time
Within 15 minutes of schedule
1.07%
Cancelled
Share of scheduled flights
79 min
When late, late by
Average across delayed arrivals
16 min
Delay per flight
Averaged over every flight flown
What the record says about this route
The shape of the lateness matters here. Flights on this route are not late often, but when they are late they are late by about 79 minutes — long enough to lose a connection or an evening. The on-time percentage looks reassuring and understates the consequence of being on the wrong flight.
The season swings this route hard. In May it ran 18.9 points more punctual than in December — a difference bigger than the one between the best and worst airlines on most routes. If the date is flexible, it is worth more than the carrier.
Only United Airlines flies this route in the published record, so there is no choice to weigh — the route's figures and the airline's are the same figures.
This is a thin route — 374 flights across the whole period. On a route this infrequent a cancellation is far more costly than the rate suggests, because the next departure may not be the same day.
Which airline should you fly on this route?
Over July 2024 – July 2026, United Airlines arrived on time most often on IAD to PBI. Flights ran closest to schedule in September and worst in December.
Every airline on IAD to PBI
Ranked by how many flights each one operated. A carrier with fewer than 100 flights in the period is listed but not graded.
| Airline | Flights | On time | Cancelled | Avg delay | Grade |
|---|---|---|---|---|---|
| United Airlines | 322 | 81.39% | 1.24% | 86 min | C |
| Republic Airways | 52 | 82.35% | 0% | 34 min | — |
Month by month
Share of flights that arrived within 15 minutes of schedule, by month flown.
Other routes from Washington
Common questions
Are flights from Washington to West Palm Beach/Palm Beach usually delayed?
81.52% of flights on the IAD to PBI route arrived within 15 minutes of schedule, so roughly 2 in every ten arrived late. That is better than the average route in this record.
Which airlines fly from Washington to West Palm Beach/Palm Beach?
Only United Airlines appears in the published record on this route, with 322 flights and 81.39% arriving on time.
How often are IAD to PBI flights cancelled?
1.07% of scheduled flights did not operate — about 11 in every thousand. That is in the normal range.
What is the best month to fly Washington to West Palm Beach/Palm Beach?
May, when 90% of flights arrived on time. The worst was December at 71.1%.
When IAD to PBI flights are late, how late are they?
About 79 minutes on average across the flights that arrived more than 15 minutes behind schedule.
What these figures do and do not tell you
Everything on this page is counted from the flights that actually operated on IAD to PBI during July 2024 – July 2026, as reported by the airlines to the US Bureau of Transportation Statistics. "On time" is the federal definition: arriving at the gate within 15 minutes of the scheduled time.
A route's record is a description of the past, not a forecast. Weather, air traffic control and the aircraft's earlier flights that day drive most delays, and none of them are predictable from a historical rate. What the record does tell you is whether this route runs late more often than others, and which carrier on it has the better history — which is the part you can actually act on when you book.
Cancellations are counted separately from delays because they are a different problem for a traveller: a late flight still gets you there. How the grade is calculated →