17 providers offer 191 broadband deals in Caernarfon, from £20.00 a month and up to 1,600 Mbps. Typical measured speed is 64 Mbps down and 18 Mbps up, 37% below the UK download average.
Best value broadband deal in Caernarfon, Gwynedd
The best value in Caernarfon, Gwynedd on full first-year cost is Plusnet's Full Fibre 145: £292 across year one, about £24 a month. A £155 reward card is bundled in. 145 Mbps covers streaming, video calls and working from home.
Best value in Caernarfon, Gwynedd
£22.99/mo
rises to £26.99 in March 2027 (+£4)
Avg £26.32/mo over contract · £632 total over 24 months
Fastest broadband deal in Caernarfon, Gwynedd
The fastest deal available in Caernarfon, Gwynedd is Full Fibre 1.6GB Premium from EE at 1,600 Mbps.
Fastest in Caernarfon, Gwynedd
Full Fibre 1.6GB Premium
115 Mbps upload · Full Fibre
Best for power users & big households
£33.99/mo
rises to £37.99 in March 2027 (+£4)
Avg £37.32/mo over contract · £896 total over 24 months
Cheapest broadband deal in Caernarfon, Gwynedd
The cheapest deal in Caernarfon, Gwynedd is 300Mb Full Fibre (24 Months) from 4th Utility at £20.00 a month for 300 Mbps. It's full fibre, so the advertised speed is the speed that reaches the router. The £20.00 is an intro price that rises to £40.00 a month after the intro window, making the real first-year cost £240. Onestream is essentially level at £20.63 a month.
Cheapest in Caernarfon, Gwynedd
300Mb Full Fibre (24 Months)
300 Mbps upload · Full Fibre
Best for 4–5 person households, heavy use
£20/mo
for 12 months, then £40/mo
Avg £30/mo over contract · £720 total over 24 months
Runner-up on price
Onestream Fibre 55
10 Mbps upload · Hybrid Fibre
Best for small homes, single 4K streamer
£19.94/mo
rises to £22.69 in April 2027 (+£2.75)
Avg £22/mo over contract · £528 total over 24 months
Compare broadband deals in Caernarfon, Gwynedd
£21/mo
rises to £24 in April 2027 (+£3)
Avg £23.25/mo over contract · £558 total over 24 months
£30/mo
rises to £33.50 in April 2027 (+£3.50)
Avg £32.63/mo over contract · £783 total over 24 months
Sky Full Fibre Gigafast
100 Mbps upload · Full Fibre
Best for power users & big households
£31/mo
No rises, no surprises.
£749 total over 24 months
Onestream Fibre 55
10 Mbps upload · Hybrid Fibre
Best for small homes, single 4K streamer
£19.94/mo
rises to £22.69 in April 2027 (+£2.75)
Avg £22/mo over contract · £528 total over 24 months
Broadband providers in Caernarfon, Gwynedd
17 providers serve Caernarfon, Gwynedd, with EE the fastest at 1,600 Mbps.
Ranked by Ofcom complaints per 100,000 customers, fewest first. A down arrow is below the industry average, up is above, and a dash means Ofcom publishes no figure for that provider (usually because it is below Ofcom's 1.5% market-share reporting threshold). A small diagonal arrow shows the past-year trend (↘ improving, ↗ getting worse).
Ofcom records the typical Caernarfon, Gwynedd download speed at 64 Mbps.
Upgrade nudge
Room to upgrade in Caernarfon, Gwynedd
Only 4% of the 2,800 connections here are on 300Mbps or faster, even though 90% can get gigabit.
The faster line is already there. For most of these homes it is the contract holding them back, not the infrastructure.
Is your broadband good enough?
The typical Caernarfon, Gwynedd line runs 64 Mbps.
Working from home
OKStreaming and family use
OKWhat speeds are people actually getting?
Gigabit reaches 90% of Caernarfon, Gwynedd, and the fastest available is 1,000 Mbps. The full split by band is below.
Which broadband networks reach Caernarfon, Gwynedd?
The wholesale networks carrying Caernarfon, Gwynedd broadband, from Openreach to Virgin Media and the altnets, read off the live deals.
Apart from Openreach, here is the network roster for Caernarfon, Gwynedd. The smaller altnets are normally the cheapest gigabit when they reach you, and the most patchy when they don't.
- CityFibre: Sky, The One Broadband, Vodafone
- 4th Utility: 4th Utility, Rise Fibre
- Airband
On top of the altnets, Openreach also serve Caernarfon, Gwynedd (Openreach covers every UK premises bar a tiny remote tail).
There are 17 providers on the live deal list for Caernarfon, Gwynedd.
What broadband coverage does Caernarfon, Gwynedd have?
Superfast broadband reaches 98% of Caernarfon, Gwynedd premises but gigabit only 90%, so around 8% of homes can get fast broadband but not the fastest.
Can I rely on mobile broadband in Caernarfon, Gwynedd?
Outdoor 5G reaches 84% of Caernarfon, Gwynedd, but 2% of homes get no indoor 4G from any network, so a mobile backup here wants a window.
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* Based on Go.Compare research estimating that 28% of UK broadband users pay for faster broadband speeds than they need (which we interpret as overpaying), equivalent to around 7.5m UK households.
Speed and coverage figures for Caernarfon, Gwyneddcome from Ofcom's Connected Nations data, current to January 2026. Deal prices are pulled live from providers. Compiled by the FindBroadband team. See how we rank and source our data.