PlainFlights

Route · IAD → PBI · 2020–2025 BTS data

Washington to West Palm Beach/Palm Beach

According to PlainFlights' route traffic ranking (BTS On-Time Performance total flights), IAD to PBI (Washington to West Palm Beach/Palm Beach) ranks #4449 of 4927 tracked domestic routes by total flights (most flights = #1).

Data updated 2026-06-13

80.3%
On-time
+1.3 pts
vs US avg
80 min
Delay when late
1,072
Flights
#4449 of 4927
Corpus placement

Cancelled

3.4%

Best Month

Jan 2021 91%

Worst Month

Mar 2022 60%

Distance

859 mi

Carriers

9

Monthly Performance

Recent 24 months of route data.

Period Flights Delayed Cancelled Diverted Carriers
Dec 2025 45 13 0 0 UA
Nov 2025 30 6 1 0 UA
Oct 2025 31 6 0 1 UA,YX
Dec 2022 30 7 2 0 YV,UA
Nov 2022 30 1 1 0 YV
May 2022 31 5 2 0 YV
Apr 2022 30 5 1 0 YV
Mar 2022 57 23 2 1 UA,YV,YX
Feb 2022 55 13 0 0 YV,YX,UA
Jan 2022 61 11 10 0 YV,YX
Dec 2021 62 21 2 0 UA,YV,YX
Nov 2021 51 8 0 2 YV,YX,UA
Oct 2021 32 6 1 0 YV,YX
Sep 2021 30 6 0 0 YX
Aug 2021 31 9 1 1 YX
Jul 2021 31 8 0 0 YV,YX
Jun 2021 31 3 1 0 YV,YX
May 2021 58 7 0 1 UA,YV,YX
Apr 2021 52 6 1 0 UA,YV
Mar 2021 60 7 3 0 UA,YV,YX
Feb 2021 48 14 2 0 YV,YX
Jan 2021 54 5 2 0 UA,YV
Dec 2020 40 8 1 0 UA,YV
Aug 2020 31 5 1 0 YV

IAD–PBI seasonal on-time pattern

Best: June (90.3%) · weakest: December (72.3%)

70%75%80%85%90%95% JanFebMarAprMayJunJulAugSepOctNovDec 72.3%

Strongest calendar month

June

90.3% on-time · ~31 flights/mo

Busiest calendar month

January

~58 flights/mo avg

Weakest calendar month

December

72.3% on-time · ~44 flights/mo

Cancellation Rate

3.4%

34 of 1,011 flights

Diversion Rate

0.6%

6 of 1,011 flights

Explore origin & destination

On-time and delay data for the airports this route connects.

IAD - Washington

Full on-time, delay-cause, and seasonal performance for Washington, DC.

IAD on-time profile

PBI - West Palm Beach/Palm Beach

Full on-time, delay-cause, and seasonal performance for West Palm Beach/Palm Beach, FL.

PBI on-time profile

Compare the two airports

See IAD and PBI side by side on delays, cancellations, and reliability.

Compare IAD vs PBI

Origin-hub reliability standing

Mid-pack among IAD departures

From IAD, this corridor sits with 42 other 75–85% on-time routes out of 58 tracked departures, not the hub's reliability leaders (14 at ≥85%) and not the softest ( 2 below 75%). Destination: West Palm Beach/Palm Beach · fleet on-time rank #3018 of 4927.

What the Data Says About IAD to PBI

1,072 tracked flights put the IAD to PBI pairing (Washington to West Palm Beach/Palm Beach) at a 80.3% on-time rate, squarely in line with the wider network. Delays that do occur run 79.6 minutes on average. Across the 859-mile route and its 9 carriers, the trailing 24 months show 3.4% cancelled and 0.6% diverted (1,011 flights sampled).

The monthly split is wide on this route: Jan 2021 posted the strongest performance at 91% on-time, while Mar 2022 came in at just 60% - a 31-point swing worth factoring into travel timing.

On the multi-year calendar, IAD–PBI peaks in June at 90.3% on-time while January carries the heaviest traffic (~58 flights per month) ; the softest month is December at 72.3%, a 18.0-point swing that repeats because the corridor's weather and holiday mix stays stable year to year.

Frequently Asked Questions

Where does IAD to PBI rank among US routes by traffic? ▼
According to PlainFlights' route traffic ranking, IAD to PBI ranks #4449 of 4927 tracked domestic routes by total flights (most flights = #1). That ordinal matches our busiest-routes listing (total_flights DESC). See /methodology#corpus-placement for the exact sort basis.
How often are flights delayed from IAD to PBI? ▼
Flights from Washington to West Palm Beach/Palm Beach have a 80.3% on-time rate based on 1,072 flights. The average delay is 79.6 minutes. The best recent month was Jan 2021 with 91% on-time.
What is the cancellation rate for IAD to PBI? ▼
Over the last 24 months, 3.4% of flights on this route were cancelled (34 of 1,011 flights) and 0.6% were diverted.
How far is the flight from IAD to PBI? ▼
The flight distance from Washington (IAD) to West Palm Beach/Palm Beach (PBI) is approximately 859 miles. This route is served by 9 carriers.
When is the best time to fly from IAD to PBI? ▼
The best recent month for on-time performance was Jan 2021 (91% on-time). The worst was Mar 2022 (60% on-time). Consider booking during months with historically better performance.

Airports on this route

IAD Airport

Washington
PBI Airport

West Palm Beach/Palm Beach
Data source

Data Source: Bureau of Transportation Statistics (BTS), On-Time Performance Data. Statistics reflect cumulative performance across all available reporting periods.

Read our methodology - how this data is sourced, computed, and verified.

Using IAD–PBI data

IAD–PBI is mid-pack at 80.3% on-time; month and carrier mix move more than the corridor headline.

  • Compare IAD and PBI airport profiles: delay causes and top routes differ even on the same corridor. IAD airport
  • If your dates flex, June (90.3% on-time) beats December (72.3%) on this corridor. Seasonal chart
  • 4 other routes post a similar 80.3% on-time rate; compare before you commit to this pairing. Similar routes

On-time rate reflects the BTS historical average across all reporting carriers on this origin–destination pair, not any single flight or booking recommendation.

Data sourced from U.S. Department of Transportation Bureau of Transportation Statistics (BTS) On-Time Performance data. See our methodology for details. Retrieved and formatted by PlainFlights

Every figure on PlainFlights is rendered directly from BTS On-Time Performance data, no number is typed in by an editor. This page aggregates this specific route's on-time performance and monthly trend, live from the dataset. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.