What is the top internet provider in Harlingen, Texas? Vexus Fiber stands out as the best internet service provider for most households in Harlingen due to its symmetrical speeds and competitive introductory pricing. While Vexus Fiber may not be available in all areas of Harlingen, the network is expanding rapidly and offers plans with speeds of up to 5 Gig. Alternatively, Spectrum or T-Mobile Home Internet are also reliable options, depending on the availability in your specific area. If you are looking for the most budget-friendly or fastest internet options, Spectrum’s $25-per-month plan with 50 megabits per second download speeds is the cheapest in Harlingen, while Vexus Fiber’s 150Mbps plan costs $30 per month with an additional $10 network access fee. For the fastest internet speeds in Harlingen, both Vexus Fiber’s Gigabit Fiber and Spectrum offer 1,000Mbps downloads and are accessible across the town.