AirHint found the following cheapest one-way flights from London (LHR) to Newcastle (NCL) in September 2025 (see full year).

One-Way flights

02 Sep	British Airways	direct
29 Sep	British Airways	direct
14 Sep	British Airways	direct
21 Sep	British Airways	direct
30 Sep	British Airways	direct
24 Sep	British Airways	direct
23 Sep	British Airways	direct
12 Sep	British Airways	direct
19 Sep	British Airways	direct
11 Sep	British Airways	direct

Also check the deals for return flights from London to Newcastle in September.

The deals are updated regularly. The prices may go up as tickets are purchased by other travellers. Only the cheapest flights are offered. Select a price to book and secure these cheap prices.

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Cheapest one-way flights from London to Newcastle in September from 51€

One-Way flights