If the passenger has to choose between Delta Airlines and American Airlines, they can see through the points of difference between these two:

• Delta Airlines is more reliable than American Airlines in terms of providing flight network connectivity all throughout and having flight departures and arrivals on time which is unlike American Airlines, which is not quite reliable.
• Even the customer service is better in the case of Delta Airlines. The staff with Delta Airlines are very much friendly and provide exceptionally good service, unlike American Airlines, where they provide decent service.

Is Delta really the best airline?

Delta Airlines is a 3-star airline. It has been described as a good airline by various reviews being presented for it in terms of food, customer service, reliability, and stress-free travel experience. It can thus be called one of the best airlines, if not the best one.

Are Delta seats more comfortable than American Airlines? 

The seats with Delta Airlines are more comfortable than the American Airlines as they have more legroom space and wider seating for the passengers to travel in a more relaxing manner.

Conclusion

Based on the details provided, the passenger would now have clarity on, is Delta better than American Airlines from all the information that has been discussed.