What are Delta's rules for travel agencies?

The rules below are Delta's own, from its agency pages, each with its source and the day we checked it. For the date math on a memo or a credit, open Delta in the airline policy finder.

How long do you have to dispute a Delta debit memo?

Payment is due on receipt and Delta asks agencies to review and dispute quickly, so file the dispute the day the memo arrives.

• Window: Due on receipt
• Where to dispute: ARC Memo Manager
• Fees: Delta may charge a $20 service charge to agencies that don't use ARC Memo Manager.

Source: Delta Pro, Debit memo information, checked on November 2, 2026.

The proof to gather depends on the memo's reason. Pick the reason in the finder for the checklist, or read how to dispute an airline debit memo.

Which schedule changes let a Delta traveler get a refund?

For tickets issued on or after October 28, 2024, a move of 180 minutes or more on a domestic trip, or 360 minutes or more on an international trip, qualifies. Tickets issued earlier use 120 minutes. Cancellations, airport changes, added stops, downgrades and missed connections also qualify, and a flight number change alone does not.

To refund a nonrefundable ticket, add OSI DL REFUND PER DL INVOL before cancelling, then refund in the GDS through ARC. To reissue, add OSI DL REISSUE DUE TO DL INVOL. No waiver code is needed.

Source: Delta Pro, Schedule change and irregular operations rebooking policy, checked on November 2, 2026.

Current waivers: Delta Pro, current exception policies.

How long does an unused Delta ticket keep its value?

Valid for one year from the original ticket date. Domestic trips finish within the year; international trips begin within it. An exchange keeps the original ticket's year. A flight Delta cancels gives an eCredit valid five years from issue.

Basic fares: A Delta Main Basic ticket cancelled before departure keeps its value for a new ticket, less the cancellation charge in the fare rule, within the original ticket's one-year validity. If the fare rule lists no Main Basic cancellation charge, the ticket can't be changed or cancelled. A missed flight forfeits the value.

Source: Delta, Cancellations and eCredits, checked on November 2, 2026.

For the exact day a credit runs out, with three dates to remind the traveler, open the credit in the finder. Tracking credits across a corporate account is in how a TMC tracks unused ticket credits.

How long can you void a Delta ticket?

Straight sales void in IAR within one business day, so a Monday ticket by 11:59 PM Tuesday. Exchanges and refunds void by 11:59 PM the same day, and manually entered transactions by midnight on the issue date.

Source: Delta Pro, Refund, exchange and void guidelines, checked on November 2, 2026.

Where do agencies find Delta's policies?

Delta publishes its agency rules on its agency site. Delta tickets carry the prefix 006 and the code DL. Rules change, so check the airline's page before you act.

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