Let KAYAK do the searching
Based on KAYAK hotel searches, the most popular destination is Hermosillo (50% of total searches to Sonora). The next most popular destination is Ciudad Obregón (50%).
KAYAK users have found double rooms in Sonora for as cheap as $28 (Ciudad Obregón) in the last 3 days. The average price is $164.
In the last 72 hours, users have found Sonora hotels for tonight for as low as $44 (Ciudad Obregón). Users have also found 3-star hotels from $50 (Ciudad Obregón) and 4-star+ hotels from $121 (Hermosillo).