Glasgow → Heathrow flight delays
GLASGOW → HEATHROW · all airlines · 7,054 flights · May 2025 – April 2026 · source: UK CAA
This route is delayed
18%of the time, by +44 min on average when it does.
This is history, not a promise — your specific flight could well be on time.
On-time rate
82%
Delayed 3h+
0.1%
Cancelled
0.9%
Avg when late
+44m
Were you delayed 3+ hours on this route?
About 0.1% 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 GLASGOW → HEATHROW run late?
16
8
11
13
18
23
27
21
31
21
12
16
J
F
M
A
M
J
J
A
S
O
N
D
Delays peak in September (31% late).
Frequently asked
How often is the Glasgow to Heathrow flight delayed?
About 18% of GLASGOW → HEATHROW flights arrive late (15+ minutes), by an average of 44 minutes when they do, based on 7,054 flights in May 2025 – April 2026.
What is the worst month for delays on GLASGOW → HEATHROW?
September is the worst, with 31% of flights delayed, while February is the most reliable at 8%.
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