Heathrow → Washington (Dulles) flight delays
HEATHROW → WASHINGTON-DULLES · all airlines · 3,993 flights · May 2025 – April 2026 · source: UK CAA
This route is delayed
24%of the time, by +60 min on average when it does.
This is history, not a promise — your specific flight could well be on time.
On-time rate
76%
Delayed 3h+
1.2%
Cancelled
2.5%
Avg when late
+60m
Were you delayed 3+ hours on this route?
About 1.2% of these flights land 3h+ late. If yours did, under UK261 you could be owed up to £520 — and you can claim it yourself for free. Check if you're owed →
When does HEATHROW → WASHINGTON-DULLES run late?
17
16
15
16
28
31
41
26
24
22
20
26
J
F
M
A
M
J
J
A
S
O
N
D
Delays peak in July (41% late).
Which airline is most punctual on HEATHROW → WASHINGTON-DULLES?
Virgin Atlantic Internationaldelayed 14%
Virgin Atlantic Airways Ltddelayed 16%
British Airways Plcdelayed 25%
United Airlinesdelayed 27%
Frequently asked
How often is the Heathrow to Washington (Dulles) flight delayed?
About 24% of HEATHROW → WASHINGTON-DULLES flights arrive late (15+ minutes), by an average of 60 minutes when they do, based on 3,993 flights in May 2025 – April 2026.
Which airline is most punctual on HEATHROW → WASHINGTON-DULLES?
Virgin Atlantic International, delayed 14% of the time — the best of the 4 airlines flying this route.
What is the worst month for delays on HEATHROW → WASHINGTON-DULLES?
July is the worst, with 41% of flights delayed, while March is the most reliable at 15%.
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