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🔄 Can You Modify an Interline Ticket?
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The fare rules

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Availability across all segments

United can only modify a ticket if they issued it. If another airline issued the ticket, you may need to go through them directly.

📞 How to Contact United Airlines to Modify an Interline Ticket☎️+1 (888) 418-5060
If your ticket was issued by United Airlines, here’s how to proceed:

1. Call United Airlines Customer Support
From the U.S. or Canada: 1-800-UNITED-1 (1-800-864-8331)

For other regions, visit the United Airlines Contact Page

Explain that you have an interline ticket and need to change it. Be ready to:

Provide your confirmation number or ticket number

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Share details about the change (dates, destinations, etc.)

2. Visit a United Airlines Ticket Office
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If you booked through a third-party agency (like Expedia or a local agent), they may be the only ones authorized to make changes to your itinerary.

💡 Tips for Smooth Modification of Interline Tickets
Check fare rules before calling; changes may incur fees.

Call during non-peak hours to avoid long hold times.

Be flexible with your date or routing options—availability can be limited.

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Here are a few interline and codeshare partners that you might see on a United-issued ticket:

Lufthansa (Germany)

Air Canada

ANA (Japan)

Singapore Airlines

Turkish Airlines

Swiss International Air Lines

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🧾 Will You Be Charged for Changing an Interline Ticket?
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United will explain all fees before confirming your change.

🚫 Can You Change an Interline Ticket Online?
Usually not. Interline itineraries typically cannot be modified through United's website or app. You must speak with an agent to coordinate the change across multiple airlines.

🛑 What If My Interline Flight Is Delayed or Canceled?
If one leg of your trip is disrupted (e.g., a delay on Lufthansa), United may still help you—if they issued the ticket. Always go to the issuing carrier first.

If United issued the ticket, call their support or visit a counter.

If another airline issued the ticket, you must contact that carrier.

📄 What Documents Do You Need to Modify Your Ticket?
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Your passport or ID if you’re already traveling

A list of preferred new dates or flights
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✍️ Sample Script for Calling United Airlines
Here’s how you might explain your situation to the agent:

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🧭 Summary
Topic Details
Can you modify it? Yes, if United issued the ticket
Call for changes? 1-800-UNITED-1 or local United office
Online changes allowed? Usually no
What you’ll need Confirmation number, ID, travel details
Change fees Vary based on fare rules and airlines
Need Help?☎️+1 (888) 418-5060
If you’re unsure about your booking or who issued your interline ticket, the best thing you can do is contact United directly or check the eTicket receipt. Look for the 13-digit ticket number—if it starts with 016, it was issued by United Airlines.