United Airlines Flights

United Airlines (UA) traces its roots to 1926, with its modern form emerging from mergers (including Continental Airlines in 2010). It is one of the largest full-service airlines globally and a founding member of the Star Alliance (partnering with Lufthansa (LH), ANA (NH), and Air Canada (AC), among others). Headquartered in Elk Grove Village, Illinois, it’s known for its extensive global network, reliable operations, and the MileagePlus frequent flyer program—valued for its flexibility and Star Alliance integration.

United’s primary hubs include: Chicago O'Hare International Airport (ORD), Denver International Airport (DEN), George Bush Intercontinental Airport (IAH), Newark Liberty International Airport (EWR), San Francisco International Airport (SFO), and Washington Dulles International Airport (IAD). It serves over 375 destinations across 60+ countries, with strong focus on U.S. domestic routes, transatlantic (U.S. to Europe), and transpacific (U.S. to Asia) flights—particularly from its SFO hub to key Asian cities.

United Airlines In-Flight Services

United Airlines offers a range of cabin classes and tailor-made facilities to meet the needs of different passengers.

• Seating options vary by class: Economy class (Standard economy class) offers 30 to 32 inches of legroom, which is included in the basic fare. The legroom in the premium economy class has increased by 5 to 7 inches (35 to 37 inches), and the fare for each flight is ~$15 to $60, depending on the length of the route. Premium Plus (applicable to long-haul routes) offers wider seats (19-20 inches), 38-40 inches of legroom, and enhanced facilities.
• Dining For domestic flights lasting more than 2 hours, free snacks (pretzels, biscuits) and non-alcoholic beverages are provided; Paid “Buy on Board” meals ($8–$15) are available on longer routes. Free meals are offered on international/intercontinental flights: hot dishes are available in economy class, while Premium Plus and North Star enjoy a carefully curated menu by the chef and alcohol.
• Entertainment and Wi-Fi are widely available: The backrest screens of most aircraft seats has over 150 movies, shows and live TV broadcasts. Almost all flights offer Wi-Fi (Panasonic/Gogo) (with prices ranging from ~$8 to $35 depending on the length of the route) for streaming and browsing.
• Special services Reserve special meals (vegetarian, gluten-free) 24 hours in advance. Wheelchair-assisted and unaccompanied services for minors (aged 5-14) cost ~$150 per segment.

United Airlines Top Routes (Most Popular Destinations)

United operates high-frequency flights between its major hubs and key global cities. Below are top routes with average flight time and distance (in miles, the standard U.S. unit):

United Airlines Flights - From Chicago (CHI)

United Airlines Flights - From San Francisco (SFO)

United Airlines Flights - From Newark (EWR)

United Airlines Check-in Guide

United Airlines offers flexible boarding options to simplify your journey:

• Online/mobile check-in: 24 hours to 45 minutes before departure (60 minutes for international flights). Use the United Airlines app or website, enter your confirmation number, select your seat, and save your mobile boarding pass (QR code) for quick access.
• Airport check-in: The self-service check-in kiosks are open three hours before departure, allowing you to choose your seat and print your luggage tags. The staff counter is open 4 hours before the departure of international flights and 2 hours before the departure of domestic flights to provide assistance.

United Airlines Seat Selection

United Airlines Baggage Policy

United Airlines MileagePlus Program

United Airlines' MileagePlus is one of the most comprehensive frequent flyer programs, closely integrated with Star Alliance:

• Earn miles: For every dollar spent on United Airlines flights, you can earn 5 miles (2 miles in economy class). Mileage rewards obtained through co-branded cards (Chase) or partners (hotels, car rental companies, and Star Alliance airlines such as Lufthansa).
• Redeem miles: Book a flight ticket (the mileage cap for domestic short-haul flights in the United States is 6,500 miles), upgrade your seat or check into a hotel. Miles can be used among more than 26 Star Alliance partners.
• Key rule: The mileage validity period is 18 months after the last account activity. Free transfer to Star Alliance partners (such as All Nippon Airways, Air Canada).

Why Book United Airlines on Trip.com?

• Real-time updates: Track flight delays, gate changes or cancellations in real time on Trip.com, keeping you informed at all times.
• Flexible booking: With the 24/7 support provided by Trip.com, modify or cancel your trip (charged according to United Airlines' fare rules).
• Earn extra rewards: Connect your MileagePlus membership to earn miles after your flight and collect travel coins that can be exchanged for future travel bookings.

United Airlines Info Overview

Disclaimer: Flight times, distances, and baggage fees may vary by fare class or season. Check airline site for real-time United Airlines deals and updates.