You cannot transfer a Delta companion certificate to someone else
Delta companion certificates are non-transferable. The certificate is issued to a specific passenger and can only be used by that person when they book a flight. You cannot give it to a family member, friend, or colleague, and Delta will not process a transfer request.
If you have a companion certificate you will not use, your options are limited. You can let it expire, use it yourself with a companion of your choice, or in some cases contact Delta directly to ask about certificate extension or replacement if it was issued due to a service failure or promotion error.
Key Takeaways
- Delta companion certificates cannot be transferred to another person under any circumstances.
- Only the person whose name appears on the certificate can use it to book a flight.
- If you cannot use the certificate before it expires, you lose the benefit — there is no refund or credit to your account.
- Contacting Delta directly is the only way to explore whether your specific certificate might be extended or reissued.
Why Delta does not allow transfers
Companion certificates are tied to a specific ticket holder for fraud prevention and revenue management. Delta issues them as rewards for elite frequent flyer status, as compensation for service failures, or as promotional offers tied to credit card sign-ups. Allowing transfers would let people sell or trade certificates, which would undermine the program's value and create a secondary market Delta does not control.
The certificate also comes with terms specific to the original recipient — it may have blackout dates, route restrictions, or expiration windows that were set when it was issued. Transferring it would require Delta to reissue those terms to a new person, which adds administrative work and creates disputes over who owns the benefit.
What you can do with a companion certificate you will not use
If the certificate is still valid, you can use it yourself. Book a flight in your own name, and when you purchase the companion ticket, the certificate discount applies to that second ticket. The companion does not have to be the same person each time — you can use it with different people on different trips, as long as you are the primary ticket holder.
If you will not use the certificate before its expiration date, contact Delta directly to confirm the exact expiration. Some certificates issued as compensation or promotion can sometimes be extended if you reach out before they expire, though Delta is not required to extend them. Certificates tied to elite status renew each year if you maintain that status level.
How companion certificates work when you do use them
When you book a flight, you select your departure and return dates, then add a companion ticket. At checkout, you enter the companion certificate number. The discount applies to the companion's ticket only — you pay full price for your own seat. The companion can be anyone: a family member, friend, coworker, or anyone else traveling with you.
Both passengers must be on the same flight itinerary. You cannot split the certificate between two different trips or use it for a one-way ticket if the certificate requires a round trip. Check the certificate terms before booking to confirm any restrictions on route, cabin class, or travel dates.
Certificates from elite status versus promotional offers
If you earned the certificate through Delta SkyMiles elite status (Diamond, Platinum, Gold, or Silver), it renews each year as long as you maintain that status level. These certificates typically expire on December 31 of the year they are issued, though some elite tiers receive them earlier in the year.
Certificates from credit card sign-ups or promotions have their own expiration dates, usually 12 months from issue. Once they expire, they cannot be used or extended unless Delta issued it in error or as compensation for a service failure. In those cases, contacting Delta customer service with your certificate number and the reason it was issued may result in an extension, but there is no may provide.
Contacting Delta about your specific certificate
If you have questions about whether your certificate can be extended, reissued, or used in a way not covered here, call Delta reservations at 1-800-221-1212 or log into your SkyMiles account and use the chat feature. Have your certificate number ready. Delta can tell you the exact expiration date, any restrictions, and whether your situation qualifies for an exception.
If the certificate was issued due to a service failure or overbooking, mention that when you contact them. Delta may be more willing to extend or replace a certificate if the original issue was on their end rather than a standard promotional or status-based certificate.
Frequently Asked Questions
Can I sell my companion certificate?
No. Companion certificates are non-transferable and cannot be sold, traded, or given away. Attempting to sell one violates Delta's terms, and the buyer would not be able to use it because it is registered to your name.
What if I have two companion certificates and only need one?
You can use both of them on separate trips before they expire. Book one flight with a companion using the first certificate, then book another flight with a different companion using the second certificate. Both must be in your name as the primary ticket holder.
Can my spouse use my companion certificate if I add them as an authorized user on my account?
No. Adding someone to your SkyMiles account does not give them the right to use your companion certificate. Only you can use it, though the companion ticket can be for anyone traveling with you.
What happens if I don't use my companion certificate before it expires?
The certificate becomes worthless and cannot be refunded, credited, or extended unless Delta issued it in error or as compensation for a specific service failure. Check your certificate terms for the exact expiration date and plan your trip accordingly.
Do companion certificates work on all Delta flights?
Most do, but some have restrictions. Check your certificate terms for blackout dates, route limitations, or cabin class restrictions before booking. Basic economy fares may not be may be able to access on some certificates, so confirm the fare type when you search for flights.