Flight Check

SFO Airport Complaints — Which Airlines Have the Most Issues

Complaint rates for 8 airlines operating at San Francisco International in San Francisco.

Weighted Avg Rate

6.5/100K

Airlines Tracked

8

Top Issue

Flight Problems

vs. Industry

21% below

Airline Complaint Rates at SFO

Ranked by DOT complaint rate per 100,000 passengers. Rates reflect each airline's nationwide complaint data, contextualized by their presence at San Francisco International.

1Frontier Airlines(F9)
23.2/100K
5,879 total complaintsTop issue: Refunds
2JetBlue Airways(B6)
10.5/100K
5,182 total complaintsTop issue: Flight Problems
3American Airlines(AA)
7.9/100K
12,808 total complaintsTop issue: Baggage
4United Airlines(UA)
6.9/100K
11,156 total complaintsTop issue: Flight Problems
5Delta Air Lines(DL)
4.1/100K
7,139 total complaintsTop issue: Flight Problems
6Hawaiian Airlines(HA)
3.7/100K
872 total complaintsTop issue: Flight Problems
7Alaska Airlines(AS)
2.5/100K
1,828 total complaintsTop issue: Customer Service
8Southwest Airlines(WN)
1.5/100K
3,165 total complaintsTop issue: Baggage

Source: DOT Air Travel Consumer Report, 2024. Rates are nationwide per-airline figures.

Monthly Complaint Trend at SFO (2024)

6.9
Jan
6.0
Feb
6.0
Mar
6.0
Apr
6.0
May
7.1
Jun
7.2
Jul
7.2
Aug
6.0
Sep
6.0
Oct
6.0
Nov
7.2
Dec

Weighted average complaint rate per 100K passengers by month. Red bars exceed the industry average (8.2).

Top Complaint Categories at SFO

Flight Problems62%
Baggage18%
Customer Service17%
Refunds3%

Weighted by airline flight volume at SFO. Categories reflect the most frequently reported issue type for each airline.

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Frequently Asked Questions

Which airline gets the most complaints at SFO?

Frontier Airlines has the highest complaint rate among airlines operating at San Francisco International at 23.2 per 100,000 passengers. However, complaint rates reflect the airline's nationwide performance, not issues specific to SFO.

What is the overall complaint environment at SFO?

The weighted average complaint rate for airlines at San Francisco International is 6.5 per 100K passengers, which is 21% below the industry average of 8.2 per 100K. The most common complaint category is flight problems.

How do I file a complaint about an experience at SFO?

If your complaint is about an airline, file with the DOT at airconsumer.dot.gov or use Flight Check's Disruption Desk (flightcheck.live/disruption-desk) to generate a complaint letter and check what you're owed. For airport facility issues (parking, terminals, security lines), contact the airport authority directly.

Does SFO cause more airline complaints than other airports?

Airport-level complaint data from the DOT is reported by airline, not by airport. The data shown here reflects the complaint rates of airlines that operate at SFO, weighted by their flight volume. Airports with more low-cost carriers tend to have higher aggregate complaint rates.

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Source: DOT Air Travel Consumer Report, January–December 2024. Complaint rates are per-airline nationwide figures weighted by flight volume at SFO.