The streaming service’s ad-supported plan will also increase to $5.99 per month Discovery+ Discovery+ is hiking its prices in the U.S., bringing the cost of its ad-supported tier to $5.99 per month and ad-free tier to $9.99 per month. The $1 increases will take effect immediately for new subscribers, while existing subscribers will receive 30 days advance notice, with the price increases starting on their next billing cycle on or after Feb. 7. The latest hike for Discovery+ comes after it