AirHint found the following cheapest return flights from Newcastle (NCL) to Guernsey (GCI) in August 2025 (see full year).

Return flights

19 Aug - 26 Aug	Blue Islands	direct
14 Aug - 21 Aug	Blue Islands	direct
12 Aug - 19 Aug	Blue Islands	direct
19 Aug - 21 Aug	Loganair
12 Aug - 26 Aug	Loganair
15 Aug - 26 Aug	Loganair
12 Aug - 21 Aug	Loganair
14 Aug - 26 Aug	Loganair
15 Aug - 21 Aug	Loganair
05 Aug - 26 Aug	Loganair
31 Aug - 16 Sep	Loganair

Also check the deals for one-way flights from Newcastle to Guernsey in August.

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 return flights from Newcastle to Guernsey in August from 242€

Return flights