Heathrow → Boston flight delays
HEATHROW → BOSTON · all airlines · 5,484 flights · May 2025 – April 2026 · source: UK CAA
This route is delayed
15%of the time, by +54 min on average when it does.
This is history, not a promise — your specific flight could well be on time.
On-time rate
85%
Delayed 3h+
0.5%
Cancelled
1.9%
Avg when late
+54m
Were you delayed 3+ hours on this route?
About 0.5% 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 → BOSTON run late?
15
16
10
12
16
12
16
17
16
14
14
20
J
F
M
A
M
J
J
A
S
O
N
D
Delays peak in December (20% late).
Which airline is most punctual on HEATHROW → BOSTON?
American Airlinesdelayed 11%
Virgin Atlantic Airways Ltddelayed 11%
Delta Airlinesdelayed 14%
Jetblue Airways Corporationdelayed 14%
British Airways Plcdelayed 19%
Virgin Atlantic Internationaldelayed 21%
Frequently asked
How often is the Heathrow to Boston flight delayed?
About 15% of HEATHROW → BOSTON flights arrive late (15+ minutes), by an average of 54 minutes when they do, based on 5,484 flights in May 2025 – April 2026.
Which airline is most punctual on HEATHROW → BOSTON?
American Airlines, delayed 11% of the time — the best of the 6 airlines flying this route.
What is the worst month for delays on HEATHROW → BOSTON?
December is the worst, with 20% of flights delayed, while March is the most reliable at 10%.
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