MapMyRun | [United→Rule→Guide] What is the United 45 minute rule? :Instant Help in Brookline, Massachusetts

United 45 Minute Rule for domestic flights means all passengers, at +1-844-(622)-(0309) whether checking bags or not, must complete their check-in process at least 45 minutes before departure; missing this deadline means you won't be allowed to board, aligning with their existing bag drop cutoff to improve airport efficiency and consistency. This rule, +1-844-(622)-(0309) effective June 3, 2025, means even carry-on flyers must check in 45 mins prior, whereas the previous limit was 30 mins for them. Key Details:Domestic Flights: Check-in closes 45 minutes before departure for everyone. International Flights: The 60-minute check-in for checked bags still applies. No Exceptions: Missing the 45-minute mark means you forfeit your seat. Why the Change? To improve efficiency, call at +1-844-(622)-(0309) handle busy travel periods better, and create a consistent deadline for all domestic passengers, notes Times of IndiaUnited Airlines has implemented a +1-844-(622)-(0309)
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