K - Economy/Coach Discounted. L - Economy/Coach Discounted. M - Economy/Coach Discounted – Usually an upgradable fare to Business. N - Economy/Coach Discounted. P - First Class Premium.
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Upgrade-eligible fare classesPassengers with tickets in the W fare class or higher can use 40 PlusPoints to upgrade to Polaris business class on eligible international flights. However, tickets booked in S, T, L, K or G fare classes require 80 points for the upgrade.
United Airlines (UA) allows 1 carry-on bag and 1 personal item (purse, briefcase, laptop bag) per passenger fee free. Carry-on should not exceed the following size and weight restrictions: 45 linear inches (22 x 14 x 9 in) or 115 centimeters (56 x 36 x 23 cm) including handles and wheels.
Carry-on bags are not included unless you're flying to South America, across the Atlantic or on an international flight across the Pacific. You can prepay to check a bag or check a carry-on at your gate for the regular bag fee plus an additional $25.
Groups 1 and 2 are made up of passengers with elite status in MileagePlus and partner programs, as well as those passengers seated in premium cabins. Group 2 also includes United co-branded credit card members and passengers who have purchased Priority Boarding. Group 3 includes passengers in window seats.