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If Delta cancels or significantly changes your flight and reroutes you onto an airline that isn’t Delta or a SkyTeam partner, the miles and MQDs you would have earned on your original Delta itinerary don’t post automatically. You have to call and ask for them — a manual adjustment frequent flyers call Original Routing Credit (ORC). It’s not a published Delta program with a rulebook; it’s a request an agent can honor at their discretion. Here’s how it actually works.
What Original Routing Credit Actually Is
“Original Routing Credit” isn’t official Delta terminology you’ll find printed on delta.com — it’s the name frequent flyers use for a specific manual fix. When Delta’s own irregular operations (a cancellation, a major schedule change, an aircraft swap) force you onto a completely different carrier, that new ticket usually isn’t a Delta or SkyTeam-coded flight. Because of that, it doesn’t automatically feed SkyMiles or MQDs into your account the way flying the original Delta-ticketed itinerary would have.
ORC is the fix: you ask Delta to credit your account as if you’d actually flown the itinerary you were originally booked on, even though you physically flew something else. It only applies to involuntary changes — Delta’s own disruption, not a schedule you chose to change yourself.
Why the Online “Request Mileage Credit” Form Won’t Work Here
Delta does have a self-service missing-miles tool on delta.com, but it only covers three scenarios: Delta flights, Delta and Partner flights, and non-airline SkyMiles partners. None of those fit an ORC situation, because the flight you actually took wasn’t operated by Delta or a partner at all — it was a completely different airline you were rerouted onto. That’s exactly why this has to go through a live agent rather than the online form.
When You Actually Qualify
- Delta caused the disruption — a cancellation, a significant schedule change, a mechanical issue, or similar irregular operations. A voluntary change you requested yourself doesn’t qualify.
- You were rebooked onto a non-Delta, non-SkyTeam carrier — if you’re moved to another SkyTeam partner, that flight typically credits normally on its own and ORC isn’t needed.
- You still have your original itinerary’s ticket/confirmation number — this is what the agent uses to calculate what you would have earned.
- The rerouted flight actually operated and you flew it — ORC replaces missing credit for a completed trip, it’s not compensation for a canceled trip you never took.
How to Actually Request It
- Fly your rerouted itinerary first — ORC credits a completed trip, so this comes after you’ve landed, not while you’re still stranded.
- Call Delta SkyMiles customer service rather than using the website’s missing-miles form.
- Explain clearly what happened: your original Delta-ticketed flight, the disruption that caused the change, and the airline you were actually rerouted onto. Ask specifically for an Original Routing Credit — naming it helps route your request to an agent who recognizes the process.
- Have your original confirmation/ticket number ready, plus proof you completed the rerouted flight (boarding pass or the new ticket number).
- If the first agent seems unfamiliar with ORC, politely ask to be transferred or escalated — this is a discretionary, case-by-case adjustment, and not every agent handles it the same way.
Timing: Don’t Wait Too Long
General SkyMiles missing-mileage requests are commonly understood to have roughly a 9-month window from the flight date, though Delta doesn’t spell out a specific ORC deadline on its own site — treat that as the outer limit, not a target. In practice, calling within days or weeks of the disrupted trip works better: the agent can still pull up the irregular-operations record easily, and your own documentation (boarding passes, confirmation emails) is easier to produce while it’s fresh.
What You Actually Get Back
A successful ORC request typically restores both pieces: the redeemable SkyMiles and the MQDs you would have earned flying your original Delta-ticketed fare — calculated off that original ticket’s price and routing, not the flight you actually took. If the airline you were rerouted onto has its own frequent flyer program, you may also be able to credit that flight there separately, since it’s a different ticket in a different program — just don’t expect Delta to double-credit the same flight twice within SkyMiles itself.
Frequently Asked Questions
What is Delta Original Routing Credit (ORC)?
It's a manual account adjustment where Delta credits the miles and MQDs you would have earned on your original, Delta-ticketed itinerary, even though you were involuntarily rerouted onto a different airline due to a Delta cancellation or schedule change. It's not an officially published Delta program — it's requested by phone on a case-by-case basis.
How do I request Original Routing Credit from Delta?
Call Delta SkyMiles customer service after completing your rerouted flight. Explain the original itinerary, the disruption, and the airline you actually flew, and ask specifically for an Original Routing Credit. Have your original confirmation number and proof of the completed rerouted flight ready.
Can I use the online missing miles form for Original Routing Credit?
No. Delta's self-service "Request Mileage Credit" tool only covers Delta flights, Delta and Partner flights, and non-airline SkyMiles partners — none of which apply when you were rerouted onto a completely different, non-partner airline. ORC requires a phone call.
Does Original Routing Credit apply if Delta rebooks me on a SkyTeam partner?
Usually not necessary. A flight on another SkyTeam partner typically earns SkyMiles and MQDs automatically, the same as flying Delta metal, so there's nothing to manually restore in that case.
How long do I have to request Original Routing Credit?
Delta doesn't publish a specific ORC deadline, but general SkyMiles missing-mileage requests are commonly understood to allow roughly 9 months from the flight date. It's best to call within days or weeks of the disrupted trip while documentation is easy to produce.
Bottom Line
Original Routing Credit isn’t a button you push — it’s a phone call and a clear explanation of what Delta’s own disruption cost you. If you were involuntarily rerouted onto a non-SkyTeam carrier after a Delta cancellation or major schedule change, you’re not out the miles and MQDs you would have earned; you just have to ask for them by name, with your original confirmation number in hand, reasonably soon after you fly.
