how long is the flu contagious? The flu is typically contagious from about one day before symptoms appear and can last up to a week after. However, it's important to practice good hygiene to prevent spreading it further. As for the sensation of something stuck in your throat, remedies like drinking warm liquids, gargling with salt water, and sucking on throat lozenges can provide relief. Additionally, staying hydrated and avoiding irritants like smoke can help soothe the discomfort.