19 providers offer 171 broadband deals in Dunmurry, from £15.00 a month and up to 7,000 Mbps. Typical measured speed is 172 Mbps down and 28 Mbps up, 70% above the UK download average.
Best value broadband deal in Dunmurry, Belfast (BT17)
The best value in Dunmurry, Belfast (BT17) 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 Dunmurry, Belfast (BT17)
£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 Dunmurry, Belfast (BT17)
The fastest deal available in Dunmurry, Belfast (BT17) is You 8000 from YouFibre at 7,000 Mbps.
Fastest in Dunmurry, Belfast (BT17)
£99/mo
No rises, no surprises.
£1188 total over 12 months
Cheapest broadband deal in Dunmurry, Belfast (BT17)
The cheapest deal in Dunmurry, Belfast (BT17) is Fast 24m from giffgaff at £5.00 a month for 200 Mbps. It's full fibre, so the advertised speed is the speed that reaches the router. The £5.00 is an intro price that rises to £25.00 a month after the intro window, making the real first-year cost £180. Comfortably faster than the UK average.
Cheapest in Dunmurry, Belfast (BT17)
£5/mo
for 6 months, then £25/mo
Avg £20/mo over contract · £480 total over 24 months
Compare broadband deals in Dunmurry, Belfast (BT17)
£5/mo
for 6 months, then £28/mo
Avg £22.25/mo over contract · £534 total over 24 months
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
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
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
Broadband providers in Dunmurry, Belfast (BT17)
19 providers serve Dunmurry, Belfast (BT17), with YouFibre the fastest at 7,000 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 Dunmurry, Belfast (BT17) download speed at 172 Mbps.
Upgrade nudge
Room to upgrade in Dunmurry, Belfast (BT17)
Only 27% of the 9,400 connections here are on 300Mbps or faster, even though 95% 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 Dunmurry, Belfast (BT17) line runs 172 Mbps.
Working from home
OKStreaming and family use
GoodWhat speeds are people actually getting?
Gigabit reaches 95% of Dunmurry, Belfast (BT17), and the fastest available is 1,000 Mbps. The full split by band is below.
Which broadband networks reach Dunmurry, Belfast (BT17)?
The wholesale networks carrying Dunmurry, Belfast (BT17) broadband, from Openreach to Virgin Media and the altnets, read off the live deals.
Live altnets in Dunmurry, Belfast (BT17), drawn from the providers actually selling deals here. Where they reach, the gigabit prices are normally the lowest on the page.
- CityFibre: Sky, The One Broadband
- 4th Utility: 4th Utility, Rise Fibre
- Netomnia: YouFibre
And the major networks: Openreach and Virgin Media O2 both reach this area (Openreach is the country-wide baseline, so it's a given).
Live count: 19 providers actively serving Dunmurry, Belfast (BT17).
What broadband coverage does Dunmurry, Belfast (BT17) have?
Superfast broadband reaches 100% of Dunmurry, Belfast (BT17) premises and gigabit 95%, on Ofcom's premise-level data.
Can I rely on mobile broadband in Dunmurry, Belfast (BT17)?
Outdoor 5G reaches 100% of Dunmurry, Belfast (BT17) homes. Here is how mobile holds up if the line drops.
5G & 4G home broadband
Outdoor 5G covers 100% of Dunmurry, Belfast (BT17), enough for a 5G home-broadband hub to stand in for a fixed line.
How Dunmurry, Belfast (BT17) compares within Belfast
Across 15 postcode districts in Belfast, by premises count, typical speed and gigabit coverage.
Nearby areas
Frequently asked questions
Ready to switch
See what's actually live in Dunmurry, Belfast (BT17).
Enter your address and we'll show every deal you can genuinely order on your line, ranked by what you'll pay across the whole contract, not by who pays us.
* 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 Dunmurry, Belfast (BT17)come 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.