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United Airlines Flights, Routes & Travel Guide

Explore the latest United (UA) fleet and aircraft seat maps. Compare amenities, baggage, check-in, children and pet travel rules.

Last updated: October 2026
IATA: UAStar AllianceFounded 1931HQ: Willis Tower, Chicago, Illinois, United States
Departure date
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About United Airlines

Explore the latest United (UA) fleet and aircraft seat maps. Compare amenities, baggage, check-in, children and pet travel rules.

United was founded on April 6, 1926, and began operations on March 28, 1931. It is an American airline, one of the largest in the United States and worldwide. The airline's main hubs are Chicago-O'Hare, Denver, Guam, Houston-Intercontinental, Los Angeles, Newark, San Francisco, and Washington-Dulles. United operates an extensive domestic and international network of routes. In total, the company serves 342 destinations. The company's fleet consists of 854 planes.

Airline codeUA
Main hubIAH
AllianceStar Alliance
Destinations367
Countries72
Fleet1147
Updated: October 2026

Popular United Airlines routes

RouteCitiesTypical durationWeekly flightsService
DEN to ORDDenver to Chicago2h 39m83NONSTOP
DEN to COSDenver to Colorado Springs54m80NONSTOP
DEN to SFODenver to SFO2h 46m70NONSTOP
DEN to IAHDenver to Houston2h 33m64NONSTOP
DEN to LAXDenver to Los Angeles2h 35m54NONSTOP

United Airlines hubs and focus cities

Route map

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All United Airlines routes

Search by airport, city or three-letter code

367 destinations · Updated: October 2026
Route endpoint

Routes serving Chicago

1–10 of 390
RouteCitiesTypical durationWeekly flightsService
ORD to LGAChicago to New York2h 17m101NONSTOP
LGA to ORDNew York to Chicago2h 45m95NONSTOP
ORD to EWRChicago to Newark2h 22m94NONSTOP
EWR to ORDNewark to Chicago2h 43m91NONSTOP
ORD to DCAChicago to Washington1h 59m86NONSTOP
ORD to DENChicago to Denver2h 51m83NONSTOP
DEN to ORDDenver to Chicago2h 39m83NONSTOP
DCA to ORDWashington to Chicago2h 19m80NONSTOP
ORD to SFOChicago to SFO4h 52m78NONSTOP
ORD to LAXChicago to Los Angeles4h 35m77NONSTOP
Routes and frequencies may change by season and travel date.
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Aircraft, cabins and onboard experience

View all aircraft

Aircraft

Cabin comparison

CabinSeat pitchSeat widthSeat recline
EconomyBoeing 737 MAX 876 cm42-45 cm5 cm
First classBoeing 737 MAX 894 cm53 cm13 cm
Premium economyBoeing 737 MAX 884-86 cm45 cm8 cm

United Airlines baggage allowance

Fees and allowances vary by route, fare and status.

Baggage

United standard checked baggage has a maximum total outside dimension of 158 cm (62 inches), including length, width and height. The standard weight limit is 23 kg per bag, with exceptions based on cabin, fare and eligible passenger benefits. Bag charges and the included allowance depend on the ticket and itinerary. Carry-on baggage and personal items are subject to separate size limits and Basic Economy restrictions. Check the current United baggage calculator before travel.

United Baggage rules

Travel policies

Pets

United accepts domesticated cats and dogs as in-cabin pets on eligible flights, subject to advance arrangements, space availability and route restrictions. Rabbits and hares are not accepted as in-cabin baggage. The pet must remain in an airline-approved carrier under the seat. Carrier dimensions depend on carrier type and aircraft, and destination documentation requirements apply. Confirm acceptance with United before booking.

Flying with pets on United

Infants

Infants are considered to be children under two years of age. Infants may fly without a seat on the plane, on the lap of an accompanying adult. If you prefer, you can buy a seat for an infant at the infant fare. Infants over the age of two must have their own seat on the plane. If one adult is traveling with two infants, one seat must be purchased for one infant and the other may be held on the lap.

United Infants policy

Check in rules

Registration options: automatic check-in, web check-in, mobile check-in, kiosk (totem) check-in. Check-in online starts 24 hours and ends 60 minutes before the scheduled departure time. Check-in at airport locations from 30 minutes to 4 hours before the scheduled departure time (depending on your departure city and destination). Check in at the airport self-service kiosk from 30 minutes to 3 hours before the scheduled departure time (depending on your departure city and destination) and receive a printed boarding pass.

United Check-in rules

Unaccompanied minors

Children between 5 and 17 years can travel as unaccompanied minors after booking the service. Children between 5 – 14 years old traveling without an adult guardian or a parent on the same flight must book the Unaccompanied Minor service—it is mandatory for them. Children 15 years or older can travel alone on flights operated by United Airlines and United Express or as Unaccompanied Minors (optional).

Unaccompanied minors in United

On-time performance

77.63%On-time arrivals
30.28 minAverage delay
99%Completion rate
1%Cancellation rate

United Airlines FAQs

Find quick answers to the most common questions about flying with United Airlines.

How do I calculate United Airlines checked-bag fees?

United provides a checked-bag fee calculator. Select the itinerary and cabin shown on your ticket, since fees and allowances vary by route and fare.

How do I confirm cabin and checked baggage for my United Airlines ticket?

Check the ticket for cabin and checked-bag piece, weight and size limits. Ask the operating carrier about extra or special baggage before travel.

How should I arrange check-in for a United Airlines booking?

Follow the confirmed flight’s check-in instructions. Ask the carrier or ticket issuer about online availability, airport counters and the deadlines for check-in, bag drop and boarding.

How do I request a change or refund for a United Airlines ticket?

Contact the airline or agent that issued the ticket and ask which fare conditions apply. Confirm eligibility, charges and any fare difference before accepting a change or refund.

What should I do if my United Airlines flight is delayed or cancelled?

Contact the airline or ticketing agent for assistance. Refund, rerouting and compensation rights depend on the applicable rules and circumstances.

Can I travel with a pet on a United Airlines booking?

Obtain the operating carrier’s approval before booking a pet. Confirm the transport method, container requirements, documents and destination restrictions.

What travel documents should I check for my United Airlines itinerary?

Check passport, visa and health requirements for your nationality, destination and any transit points. Recheck near departure. Meeting document requirements does not guarantee admission.

How should I pack a power bank for a United Airlines flight?

Carry power banks and spare lithium batteries in cabin baggage with terminals protected. Remove them if the bag is gate-checked. Confirm airline-specific restrictions.