To relieve ears plugged from sinus pressure, treat the sinus congestion causing the condition, according to WebMD. Because sinuses and ears are directly connected, sinus congestion results in pressure in the ears.
Individuals suffering from plugged ears due to sinus pressure should treat the condition with moisture. Using a nasal saline spray, running a humidifier in the home and taking a hot shower are all effective methods to relieve congestion, explains WebMD.
Individuals should also try over-the-counter pain relievers such as acetaminophen and ibuprofen to relieve discomfort in the ears. Decongestant tablets and nasal decongestant sprays may provide relief as well, according to WebMD, which notes that nasal decongestants should not be used for more than a few days to avoid a rebound effect.
While experiencing sinus pressure, avoid extreme hot or cold temperatures and activities that require movements that may cause discomfort, states WebMD. Activities in which the head is lowered, such as certain yoga poses, increase the pressure in the ears. Because the pressure in the ears can affect a person's balance, quick, sudden movements may result in dizziness and should be avoided. Individuals should also avoid alcohol, caffeine, salt, tobacco and any other substances that impact circulation.