| Cover | Mar. 21, 2024 |
| Document Type | 8-K |
| Amendment Flag | false |
| Document Period End Date | Mar. 21, 2024 |
| Entity File Number | 001-41150 |
| Entity Registrant Name | Southport Acquisition Corporation |
| Entity Central Index Key | 0001865200 |
| Entity Tax Identification Number | 86-3483780 |
| Entity Incorporation, State or Country Code | DE |
| Entity Address, Address Line One | 1745 Grand Avenue |
| Entity Address, City or Town | Del Mar |
| Entity Address, State or Province | CA |
| Entity Address, Postal Zip Code | 92014 |
| City Area Code | 917 |
| Local Phone Number | 503-9722 |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Entity Emerging Growth Company | true |
| Elected Not To Use the Extended Transition Period | false |
| Units Each Consisting Of One Share Of Class A Common Stock 0. 0001 Par Value And One Half Of One Warrant [Member] | |
| Title of 12(b) Security | Units, each consisting of one share of Class A common stock, $0.0001 par value, and one-half of one warrant |
| Trading Symbol | PORT.U |
| Security Exchange Name | NYSE |
| Common Class A [Member] | |
| Title of 12(b) Security | Class A common stock, $0.0001 par value per share |
| Trading Symbol | PORT |
| Security Exchange Name | NYSE |
| Warrants Each Whole Warrant Exercisable For One Share Of Class Common Stock At Exercise Price Of 11. 50 Subject To Adjustment [Member] | |
| Title of 12(b) Security | Warrants, each whole warrant exercisable for one share of Class A common stock at an exercise price of $11.50, subject to adjustment |
| Trading Symbol | PORT.W |
| Security Exchange Name | NYSE |
