| Document and Entity Information | Jan. 03, 2025 |
| Cover [Abstract] | |
| Amendment Flag | false |
| Entity Central Index Key | 0000899394 |
| Document Type | 8-K |
| Document Period End Date | Jan. 03, 2025 |
| Entity File Number | 001-34584 |
| Entity Registrant Name | HARBOR DIVERSIFIED, INC. |
| Entity Incorporation State Country Code | DE |
| Entity Tax Identification Number | 13-3697002 |
| Entity Address, Address Line One | W6390 Challenger Drive |
| Entity Address, Address Line Two | Suite 203 |
| Entity Address, City or Town | Appleton |
| Entity Address, State or Province | WI |
| Entity Address, Postal Zip Code | 54914-9120 |
| City Area Code | (920) |
| Local Phone Number | 749-4188 |
| Written Communications | false |
| Soliciting Material | false |
| Pre Commencement Tender Offer | false |
| Pre Commencement Issuer Tender Offer | false |
| Entity Emerging Growth Company | false |
