# Delta Air Lines and United Airlines have both introduced new, unbundled fare structures.

*aerospace · news · 2026-04-16 · Simple Flying*

## Key points

- Delta and United have introduced unbundled premium fares that remove traditional perks to lower prices.
- United's Base Polaris strips business class of lounge access and bag allowance, but keeps lie-flat seats.
- Delta plans to expand basic fare unbundling to Delta One and Delta First by late 2026.
- United's Base Polaris fares are non-refundable, non-changeable, and award tickets still retain full perks.
- Success of Delta Comfort Basic indicates the unbundling model will likely spread to more global airlines.

**Companies:** Delta Air Lines, United Airlines
**Countries:** United States

[Read the full story on Simple Flying](https://simpleflying.com/how-delta-air-lines-comfort-basic-fares-differ-united-base-polaris-fares/)

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