v3.26.3
Document and Entity Information - shares
 9 Months Ended
Sep. 30, 2026
Oct. 30, 2026
Document Information:    
Document Type 10-Q  
Amendment Flag false  
Document Quarterly Report true  
Document Period End Date Sep. 30, 2026  
Document Transition Report false  
Entity File Number 001-40430  
Entity Registrant Name FLYWIRE CORPORATION  
Entity Incorporation, State or Country Code DE  
Entity Tax Identification Number 27-0690799  
Entity Address, Address Line One 141 Tremont St #10  
Entity Address, City or Town Boston  
Entity Address, State or Province MA  
Entity Address, Postal Zip Code 02111  
City Area Code 617  
Local Phone Number 329-4524  
Title of 12(b) Security Voting common stock, $0.0001 par value per share  
Trading Symbol FLYW  
Security Exchange Name NASDAQ  
Entity Current Reporting Status Yes  
Entity Interactive Data Current Yes  
Entity Filer Category Large Accelerated Filer  
Entity Small Business false  
Entity Emerging Growth Company false  
Entity Shell Company false  
Document Fiscal Period Focus Q3  
Document Fiscal Year Focus 2026  
Current Fiscal Year End Date --12-31  
Entity Central Index Key 0001580560  
Voting common stock    
Document Information:    
Entity Common Stock, Shares Outstanding   122,542,824
Nonvoting common stock    
Document Information:    
Entity Common Stock, Shares Outstanding   0