Delta Air Lines Complaints & DOT Data (2024)
7,139 complaints filed with the DOT in 2024.
Complaint Rate
4.1/100K
Total Complaints
7,139
Rank
#22 of 27
Top Issue
Flight Problems
Delta Air Lines sits well below the industry average at 4.1 per 100,000, but its massive operation still generated over 7,100 complaints in 2024. Delta's premium positioning and hub reliability keep its rate relatively low compared to competitors.
vs. Industry Average
Delta Air Lines is 50% below the industry average.
Monthly Complaint Rate (2024)
Complaints per 100K passengers by month. Red bars exceed industry average (8.2).
What People Complain About
How to File a Complaint Against Delta Air Lines
- Document everything — save confirmation emails, receipts, and screenshots.
- Contact Delta Air Lines directly first. Give them a chance to resolve it.
- If unsatisfied, file with the DOT at airconsumer.dot.gov.
- Use the Disruption Desk to understand what you are owed.
Frequently Asked Questions
How many complaints did Delta Air Lines get in 2024?
Delta Air Lines received 7,139 DOT complaints in 2024, at a rate of 4.1 per 100,000 passengers. This ranks them #22 out of 27 airlines tracked.
What do people complain about most with Delta Air Lines?
The most common complaint category for Delta Air Lines is flight problems. Cancellations, significant delays, diversions, and missed connections. This is the most common complaint category overall. New DOT rules require automatic refunds for cancelled flights and significant delays.
How do I file a complaint against Delta Air Lines?
You can file a complaint against Delta Air Lines with the DOT at airconsumer.dot.gov, or use Flight Check's Disruption Desk to understand your rights and generate a complaint letter. Check what you're owed with the Compensation Calculator. Every DOT complaint is forwarded to Delta Air Lines's executive consumer affairs team.
Is Delta Air Lines complaint rate above or below average?
Delta Air Lines's complaint rate of 4.1 per 100K is 50% below the industry average of 8.2 per 100K. They rank #22 out of 27 airlines. See the full airline complaint rankings.
Compare Other Airlines
Source: DOT Air Travel Consumer Report, January–December 2024.