About United Airlines
United Airlines is a legacy US carrier — one of the big three alongside Delta and American — built on a hub-and-spoke model that connects pretty much everywhere to everywhere else through a handful of major airports. Its network is genuinely massive: 2,180 non-stop routes spread across 392 airports, totalling over 5.4 million kilometres of coverage. Chicago O'Hare is the crown hub with 223 routes, backed up by Denver, Houston, and Newark. This isn't a budget airline, and it's not pretending to be. United plays the full-service game, chasing business travelers and frequent flyers as much as anyone booking a vacation.
Why fly United Airlines?
The honest case for United comes down to reach. If you're trying to get somewhere obscure in the US, or connect onward to Japan, Mexico, or Germany, United's network is hard to beat. Their MileagePlus loyalty program has a solid reputation — award availability tends to be better than some competitors, and miles don't expire, which matters if you travel inconsistently. The IAH-SYD route at 13,835 km shows they're serious about long-haul too. Polaris business class on intercontinental flights is genuinely good. Economy is economy, but Economy Plus offers real extra legroom if you grab it early. For nomads routing through ORD or EWR regularly, status accumulates fast and the perks actually show up.
United Airlines hub airports
- ORD Chicago — 223 United Airlines routes from USA
- DEN Denver — 200 United Airlines routes from USA
- IAH Houston — 181 United Airlines routes from USA
- EWR New York — 165 United Airlines routes from USA
- IAD Dulles — 129 United Airlines routes from USA
Top destination countries on United Airlines
- USA — 1,804 United Airlines routes
- Mexico — 53 United Airlines routes
- Canada — 37 United Airlines routes
- Japan — 20 United Airlines routes
- Germany — 13 United Airlines routes
- Costa Rica — 13 United Airlines routes
- Guam — 12 United Airlines routes
- Italy — 12 United Airlines routes
Tips for booking United Airlines
Book directly through United's site if you want flexible fare options — third-party bookings can complicate changes. Basic Economy fares are restrictive in ways that catch people off guard: no overhead bin on some routes, no seat selection until check-in. Pay attention to fare class if you're crediting miles to MileagePlus. DEN and ORD are strong hubs for domestic connections but notorious for weather delays, so build buffer time into tight itineraries. If you're flying internationally, United is part of Star Alliance, which opens up partner lounges worldwide. Always check the alliance angle before paying for lounge access separately.
Frequently asked questions about United Airlines
Where does United Airlines fly?
United Airlines operates 2,180 routes across North America and beyond, with primary service to destinations throughout the USA, Mexico, and Canada. The airline serves major cities and regional airports, making it one of the most extensive networks in North America.
What is United Airlines's main hub?
United Airlines's primary hub is Chicago O'Hare International Airport (ORD), which serves as a major connecting point for domestic and international flights.
Is United Airlines a legacy carrier, low-cost carrier, or regional airline?
United Airlines is a legacy full-service carrier, operating a thorough network with multiple hubs and offering various service levels. It is one of the major traditional airlines in the United States, distinct from low-cost carriers.
When should I book a United Airlines flight for the best fares?
Generally, booking 1-3 months in advance offers competitive fares, though prices vary by route and season. United offers multiple fare classes from basic economy to premium cabin options, allowing you to choose based on your budget and preferred amenities.
What are United Airlines's baggage and check-in policies?
Baggage allowances and check-in procedures vary by fare class and membership status; it's recommended to review your specific ticket details on United's website. Standard check-in opens 24 hours before departure for online check-in and 3 hours before for domestic flights at the airport.