Both United Airlines and Ryanair have garnered negative feedback regarding their customer service. United Airlines has faced criticism for poor service and user experience issues on their website, while Ryanair is criticized for its upselling tactics and lack of comfort. The choice between the two might come down to specific service experiences and what issues you find most significant.

Ryanair is often criticized for having tiny, uncomfortable seats made from cheap plastic, possibly for easier cleaning. United Airlines, while also criticized for various reasons, does not have as specific complaints about the seating discomfort. Therefore, Ryanair may be considered worse in terms of seating comfort.

Booking a flight with Ryanair is often described as a nightmare due to numerous upsells and complex booking processes. United Airlines, on the other hand, has been criticized for its website's user experience, but the booking process itself is not highlighted as a major issue. Therefore, Ryanair may be more frustrating when it comes to booking a flight.

Ryanair is a low-cost airline known for offering budget-friendly flights across Europe. It is often characterized by its no-frills service, extensive upsell tactics during the booking process, and the use of secondary regional airports.

Pros of flying with Ryanair include low-cost fares and a wide range of European destinations. Cons include a complex booking process filled with upsells, the use of secondary airports that may require long commutes, and small, uncomfortable seats made of cheap plastic.

The booking process with Ryanair can be challenging due to numerous upsell attempts and dark patterns designed to add extra services to your purchase. It requires careful navigation to avoid additional costs.

The seats on Ryanair flights are known to be small and made of cheap plastic. They are designed for easy cleaning, but they may not be very comfortable for passengers.

Ryanair often uses secondary regional airports, which can result in longer commutes from the airport to your final destination. This can add significant travel time and inconvenience.

United Airlines is a major American airline headquartered in Chicago, Illinois. It operates a comprehensive domestic and international route network, making it one of the largest airlines in the world. United is a founding member of the Star Alliance, the world's largest airline alliance.

Currently, there are no user-generated pros or cons available for United Airlines. However, general feedback about airlines can vary greatly and may include factors such as the quality of customer service, in-flight amenities, punctuality, and ease of booking.

You can book a flight on United Airlines through their official website, www.united.com. The website allows you to search for flights, compare prices, and complete your booking. You can also book flights via their mobile app or by calling their customer service.

United Airlines offers a variety of services including in-flight entertainment, Wi-Fi, meal options, and different classes of seating such as Economy, Economy Plus, Business, and First Class. They also provide a frequent flyer program called MileagePlus, which allows passengers to earn miles and redeem them for various rewards.