Travel plans are rarely set in stone, and it’s common for passengers to adjust their itineraries.
According to recent travel industry data, nearly 30% of travelers modify their flights at least once before departure due to work changes, family emergencies, or unexpected events.
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United Airlines has modernized its policies to make flight changes easier.
Most Standard Economy and premium cabin tickets no longer carry traditional change fees for domestic and many international flights.
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This guide will walk you through everything you need to know about modifying your United flight.
You’ll learn step-by-step instructions for online and mobile app changes, same-day adjustments, standby options, and fare difference calculations.
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More Read: What Number Is United Airlines? Your Complete Guide to Contacting the Airline
Understanding United Airlines Flight Change Policy
United Airlines offers a 24-hour risk-free cancellation rule, allowing travelers to cancel or modify their booking within 24 hours of purchase without paying any fees.

This policy applies to all fare types booked at least seven days before departure and is especially useful for last-minute changes or booking mistakes.
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Most Standard Economy tickets now allow changes without the old $200–$400 fees that used to apply.
Travelers only need to cover the fare difference if the new flight costs more, which is far more budget-friendly than in the past.
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Basic Economy tickets are the most restrictive fare type. Generally, they cannot be changed or refunded after the 24-hour window, meaning travelers often need to purchase a new ticket if plans change.
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MileagePlus award tickets are usually more flexible than paid fares.
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Also Read: Is American Airlines a Good Airline? An Honest Review for Travelers
Step-by-Step: Change Your United Flight Online
The first step to modifying your flight is visiting the official United Airlines website. This ensures you’re accessing accurate, real-time information about flights and fares.

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Once on the website, click on “My Trips” to access your current reservations. This section is specifically designed to manage bookings, including flight changes, seat selections, and add-ons.
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To retrieve your booking, enter your confirmation number and last name. Accuracy is key—any typos may prevent access to your reservation.
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After pulling up your itinerary, click “Change flight” to view eligible alternatives. The system will display flights available for the same route, and you can adjust travel dates or times as needed.
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Before confirming, check for any fare differences. While many tickets no longer have change fees, you may still need to pay the difference if your new flight costs more.
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Once you confirm your new flight, United will email your updated itinerary immediately. This includes new departure times, gate information, and boarding passes.
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How to Change Your Flight Using the United Mobile App
To make changes on the go, open the United Airlines mobile app and log into your account. If you booked as a guest, you can still access your reservation by tapping “My Trips” and entering your confirmation number and last name.

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Once your booking is open, select the “Change Flight” option to modify your itinerary.
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After confirming your changes, the mobile app will automatically update your boarding pass with the new flight details. You’ll also receive a confirmation email for reference.
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Also Read: Is American Airlines Good? A Comprehensive Travel Review
Same-Day Flight Change & Standby Options
United Airlines offers a same-day confirmed change option for passengers who need to switch to an earlier or later flight on the same calendar day.

This is ideal for business travelers or anyone who arrives at the airport earlier than expected.
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If no confirmed seats are available for your preferred flight, United provides a standby option. Joining the standby list lets you wait for a seat that opens up due to cancellations or no-shows.
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Not all tickets qualify for same-day confirmed or standby changes. Generally, your new flight must be on the same route, requested within 24 hours of your original departure, and booked under an eligible fare type.
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More Read: Is America Airlines Safe? A Detailed Look at Safety Records & Ratings
Fees & Fare Differences Explained
Many United Airlines tickets now allow changes without traditional fees. For most Standard Economy and premium cabin fares, you can modify your flight without paying a change fee—only the fare difference applies if your new flight costs more.
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Even when the change itself is free, fare differences may apply if your new flight costs more than your original ticket. Airline prices fluctuate based on demand, season, and availability, so it’s common to encounter an additional charge.
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If your new flight costs less than your original ticket, United typically issues the remaining balance as a future travel credit.
For example, if your original ticket cost $500 and the new flight costs $450, the $50 difference is credited for future travel.
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Changing Flights by Phone or at the Airport
For travelers with complex itineraries or special requests, United Airlines’ customer service team can provide personalized support.
Agents can help adjust international flights, multi-leg bookings, or award travel tickets.
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Airport kiosks offer a convenient, self-service option to modify your flight. You can change travel dates, select new flights, and print updated boarding passes without waiting in long lines.
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FAQs About Changing a United Flight
Basic Economy tickets are the most restrictive fare type offered by United Airlines. In most cases, these tickets cannot be changed or refunded after the 24-hour risk-free window.
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If you miss a United flight, your options depend on the ticket type and timing. Standard Economy and premium tickets often allow rebooking on the next available flight, though fare differences may apply.
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Yes, most international tickets can be changed, though rules vary depending on fare type and route.
Standard Economy and premium fares typically allow changes without a traditional fee, though fare differences and taxes may apply.
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A Step-by-Step Guide to Online, App, and Same-Day Changes
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Quick Answer: How do I change my flight on United Airlines?
The first step in updating your flight is to log in to your United Airlines booking, either on the website or mobile app.
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After selecting your new flight and reviewing any fare adjustments, confirm the changes to finalize your updated itinerary. Once confirmed, United will send a new confirmation email and, if applicable, update your mobile boarding pass.
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Detailed Online Process Explained
To start modifying your flight, log in to the United Airlines website or mobile app and access “My Trips.” This section lets you view all upcoming reservations, check flight details, and make changes quickly.
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After selecting your new flight, complete any required payment for fare differences or upgrades. Once the payment is processed, United will send an updated confirmation email and, if using the app, update your mobile boarding pass.
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United Fare Types and Change Rules
Basic Economy tickets are the most restrictive fare type on United Airlines. Typically, these tickets cannot be changed or refunded after the 24-hour risk-free period.
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Business and First Class passengers enjoy the highest level of flexibility. These tickets typically allow changes without fees, and passengers often benefit from priority support for modifications.
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MileagePlus award tickets are generally more flexible than standard paid fares. Changes often do not incur traditional fees, though mileage differences may apply depending on the new flight’s cost.
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Same-Day Changes: What You Should Know
United Airlines allows travelers to request a same-day confirmed change to an earlier or later flight, often for a small fee.
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When no confirmed seats are available, United provides a standby option, letting passengers wait for an open seat on the desired flight.
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Costs, Credits, and Refund Policies
United Airlines has eliminated change fees for most Standard Economy and premium cabin tickets on domestic and many international routes.
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Pro Tips to Avoid Extra Charges
One of the easiest ways to minimize stress when plans change is to book flexible fares.
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