IAH → PHL: 79% on-time

Historical on-time performance

Houston to Philadelphia

1,324 miData through May 2026Source: US DOT · BTS

Flights on IAH–PHL arrive on time 79% of the time over the last 12 months.

On-time rate79%arrived within 15 min

p90 delay45 min1 in 10 flights is worse (tail risk)

Cancelled2.1%of scheduled flights

based on 1,674 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).

By airline

How each carrier compares

Airline	On-time	Median	p90	Cancel	Flights
United Airlinesbest	82%	on time	35 min	1.1%	881
American Airlines	76%	on time	80 min	3.4%	697
PSA Airlines⚠ low data	70%	on time	40 min	0.0%	66
Spirit Airlines⚠ low data	67%	on time	90 min	3.3%	30

Why flights run late

Most delay minutes here are attributed to Airline.

When flights don't go

Most cancellations here are attributed to Weather. Shares are among 35 cancellations with a reported cause (BTS reports causes from June 2003).

Over time

By season

When to fly

All airlines · rolling 36 months (2023-06 .. 2026-05).

Mornings are the most reliable time of day to fly this route — 88% on time.

On-time rates are fairly even by day on this route — ranging from 76% to 82% on time.

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