Massive global Star Alliance network — improving but still inconsistent
United Airlines operates one of the world's largest route networks, particularly strong across the Pacific. The airline has invested heavily in fleet renewal, ordering hundreds of new Boeing 737 MAX and 787 aircraft. The Polaris business class product (when on the right aircraft) is competitive. However, United's biggest challenge is consistency — the experience can vary dramatically between a brand-new 787 with Polaris suites and an aging 777 with the old business class layout.
Economy offers 30-31 inch pitch domestically — tighter than Delta. International economy is 31-32 inches. Economy Plus offers 3-5 extra inches for a fee. Complimentary snacks on domestic flights, full meal service on international. Seatback screens on most aircraft, though some older narrowbodies have removed them.
Polaris business class on 787s and some 777s features a 1-2-1 layout with fully flat beds, direct aisle access, and a solid bedding package. The Polaris Lounges (at major hubs) are excellent with sit-down dining. However, not all routes have the new Polaris seats — older 767s and some 777s still have dated 2-2-2 or 2-4-2 layouts.
Basic Economy: personal item only (no overhead bin). Economy: 1 carry-on + 1 personal item, checked bags from $35. Polaris: 2 checked bags free. MileagePlus Premier members get free checked bags depending on tier. Carry-on: must fit overhead.
Seatback screens on most widebody aircraft. Some newer narrowbodies have screens; older ones rely on personal device entertainment via the United app. Wi-Fi available on all flights (paid, with free texting for MileagePlus members on some flights).
Domestic economy: free snacks and non-alcoholic drinks, buy-on-board meals. International economy: complimentary meal service. Polaris: multi-course dining with pre-arrival brunch. Quality has improved but varies by route. Polaris Lounges serve hot food and cocktails.
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Search United Airlines flights →United Airlines has an on-time performance rate of approximately 78-80%, which has improved significantly in recent years following operational investments. Hub congestion at Newark (EWR) and Chicago O'Hare (ORD) — two of the most delay-prone airports in the US — remains a challenge. United holds a 7/7 safety rating. The fleet of over 900 aircraft has an average age of approximately 17 years, though United is in the middle of an aggressive fleet renewal program — the largest aircraft order in aviation history — with Boeing 787, 737 MAX, and Airbus A321XLR aircraft joining the fleet.
United operates from major hubs in Newark (EWR), Chicago O'Hare (ORD), Houston (IAH), Denver (DEN), San Francisco (SFO), Los Angeles (LAX), and Washington Dulles (IAD). As a founding member of the Star Alliance, United provides global connectivity through partners like Lufthansa, ANA, Air Canada, and Singapore Airlines. The airline operates one of the largest international route networks of any US carrier, with particular strength on transpacific routes to Asia-Pacific (through its San Francisco and Houston hubs) and transatlantic routes to Europe (through Newark and Dulles). United serves over 350 destinations in approximately 60 countries. The airline's regional operation, United Express, feeds traffic from hundreds of smaller cities into the hub network.
United fares are competitive on routes where the airline faces strong competition but can be premium-priced on routes where it dominates (particularly at Newark and Houston). MileagePlus is one of the most widely-earned frequent flyer currencies thanks to partnerships with Chase credit cards — particularly the Chase Sapphire Preferred and Reserve, which earn Ultimate Rewards points transferable to United at a 1:1 ratio. United has moved to dynamic award pricing, but promotional awards can still be found for 5,000-12,000 miles on domestic economy routes. For standard fares, book 3-6 weeks ahead for domestic and 2-3 months for international. United's Polaris business class product on the 787 and 777-300ER is one of the best US carrier business class products and represents good value when booked during sales.
MileagePlus is revenue-based — status earned by spending. Tiers: Silver (1 free checked bag, Economy Plus at check-in, priority boarding), Gold (Star Alliance Gold, lounge access, 2 free bags), Platinum (regional upgrades, higher earning), 1K (global upgrades, more benefits). MileagePlus miles are versatile for Star Alliance partner redemptions.
Fly United Airlines if: Frequent travelers who need Star Alliance connectivity and a massive domestic US network.
Consider alternatives if: Those who expect consistent premium service — United's product varies wildly by aircraft type and route.
United Airlines receives a 3.7/5 rating in our review. It is a budget-friendly option based on cabins, baggage, entertainment, food, and loyalty program.
United Airlines is based at Newark (EWR), Houston (IAH), others. It is a member of Star Alliance.
Basic Economy: personal item only (no overhead bin). Economy: 1 carry-on + 1 personal item, checked bags from $35. Polaris: 2 checked bags free. MileagePlus Premier members get free checked bags depending on tier. Carry-on: must fit overhead.
Use our flight comparison tool to compare United Airlines prices across booking platforms including Kiwi.com. Booking 6-8 weeks in advance and flying mid-week typically yields the cheapest fares.
United offers free Wi-Fi on most domestic and short-haul international flights, with plans to expand to all routes. The service speed varies by aircraft — newer planes with Viasat equipment offer faster speeds capable of streaming video, while older aircraft may have slower connections.
Polaris is United's premium long-haul business class brand, featuring lie-flat pods with direct aisle access, a Saks Fifth Avenue bedding collection, multi-course dining, and Polaris Lounges at major hubs. The Polaris lounge experience includes à la carte dining, showers, a relaxation room, and premium beverages.
Both are strong full-service US carriers with different strengths. Delta typically ranks higher in on-time performance and customer satisfaction, while United offers a larger international network, particularly to Asia-Pacific. Delta's fleet is older on average but its service consistency is praised. The best choice depends on your home airport, destination, and loyalty program preferences.
Before booking United business class, always check the aircraft type on your specific flight. The difference between a Polaris suite on a 787 and an old business seat on a 767 is like flying two different airlines.