Delta Air Lines fare classes explained
Every fare class (RBD — reservation booking designator) on Delta Air Lines, what it means for award booking, and which classes are most useful to know.
Fare classes by cabin
Delta One (Business)
| Class | Type | What it means |
|---|---|---|
| J | Full Delta One | Highest revenue Delta One business |
| C | Discounted Delta One | Lower revenue Delta One |
| I | Delta One award | SkyMiles award Delta One inventory |
Premium Select
| Class | Type | What it means |
|---|---|---|
| G | Full Premium Select | Revenue premium economy |
| P | Premium Select award | Award Premium Select space |
Comfort+
| Class | Type | What it means |
|---|---|---|
| W | Full Comfort+ | Revenue Comfort+ economy |
| S | Comfort+ award | Award Comfort+ space |
Main Cabin
| Class | Type | What it means |
|---|---|---|
| Y | Full economy | Highest revenue economy |
| B / M / H / Q / K / L / U / T / X / V / E | Discounted economy | Various revenue fare classes |
| T (also) | Award economy | Lower-level award economy inventory |
Basic Economy
| Class | Type | What it means |
|---|---|---|
| E | Basic economy | Restricted, non-changeable |
Award fare classes you should care about
For award booking, these are the Delta Air Lines classes that show inventory:
I (Delta One award)P (Premium Select award)T (economy saver)
Upgrade fare classes
O (paid Comfort+ upgrade)
Notes
Delta's dynamic pricing means award space in I and T classes can be released or held back algorithmically. Watch for flash sales which release more I-class availability.
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