Introduction

United Airlines is tightening its check-in policy for domestic flights starting June 3, 2025, requiring all passengers to check in 45 minutes before departure. Announced in May 2025, this change could catch travelers unaware—here’s how to ensure you don’t miss your flight.

The New Rule

Previously, domestic passengers without checked bags had a 30-minute check-in window, while those with bags needed 45 minutes. Starting June 3, all domestic travelers must check in at least 45 minutes before takeoff. International flights retain a 60-minute cutoff, with some destinations requiring more time for paperwork.

Why It’s Happening

United says the change streamlines operations, aligning with industry standards and improving gate efficiency during busy summer travel. It helps staff manage standby lists and seating but may impact travelers with tight schedules, especially at airports like Newark, where United has faced recent delays.

How to Stay on Board

• Check In Online: Use United’s app or website to check in 24 hours in advance, avoiding last-minute hassles.

• Arrive Early: Get to the airport 90 minutes before domestic flights to cover check-in, security, and potential delays.

• Check Airport Rules: Some locations have unique deadlines—visit United’s website for specifics.

• Go Bag-Free: If you’re not checking bags, check in online and head to security, but meet the 45-minute cutoff.

• Plan for Delays: Factor in extra time for traffic, parking, or long security lines, especially during peak periods.

What Happens If You Miss It?

Missing the 45-minute deadline could mean losing your seat or being denied boarding. United may offer alternative flights, but you could face fees or delays, particularly on oversold routes.

Conclusion

United Airlines’ new June 3 check-in rule requires domestic travelers to plan ahead. By checking in early, arriving with time to spare, and staying informed, you can keep your travel plans on track and board your flight with ease.