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Delta Seat Selection & Upgrades

AI Travel Summary & Overview

Delta Seat Selection & Upgrades — Summary

How Delta seat selection works by fare, extra legroom options, upgrade routes, and the family seating rules that let children sit with a parent free.

Key Travel Facts & Insights

  • Choosing a seat: Free advance seat selection on Main Cabin and above.
  • Extra legroom: Delta Comfort+ adds up to 3 inches of pitch plus dedicated bin space.
  • Upgrades: Medallion members receive complimentary upgrades on a rolling window by tier, with Diamond clearing first at 120 hours.
  • Seating children with a parent: Delta seats children 13 and under adjacent to an accompanying adult at no additional cost, in line with the US Department of Transportation family seating commitment.
AirlineDelta Air Lines
IATA CodeDL
TopicSeats & Upgrades
Last reviewed2026-07-31

Choosing a seat

Free advance seat selection on Main Cabin and above. Basic Economy tickets are assigned a seat automatically at check-in and cannot choose in advance, though you are still seated in the Main Cabin.

Extra legroom

Delta Comfort+ adds up to 3 inches of pitch plus dedicated bin space. Preferred Seats are standard-pitch Main Cabin seats further forward, sold at a smaller premium.

Upgrades

Medallion members receive complimentary upgrades on a rolling window by tier, with Diamond clearing first at 120 hours. Everyone else can buy an upgrade at booking, at check-in, or bid where offered.

Seating children with a parent

Delta seats children 13 and under adjacent to an accompanying adult at no additional cost, in line with the US Department of Transportation family seating commitment. Book on the same reservation for the system to apply this automatically.

Cabins available

Delta operates: Basic Economy, Main Cabin, Delta Comfort+, Delta Premium Select, First Class, Delta One.

Delta seats & upgrades — common questions

Do I have to pay to choose a seat on Delta?

Free advance seat selection on Main Cabin and above. Basic Economy tickets are assigned a seat automatically at check-in and cannot choose in advance, though you are still seated in the Main Cabin.

Can my child sit with me on Delta?

Delta seats children 13 and under adjacent to an accompanying adult at no additional cost, in line with the US Department of Transportation family seating commitment. Book on the same reservation for the system to apply this automatically.

How do I upgrade on Delta?

Medallion members receive complimentary upgrades on a rolling window by tier, with Diamond clearing first at 120 hours. Everyone else can buy an upgrade at booking, at check-in, or bid where offered.

More Delta help

All Delta policies and guides

Booking Delta? Talk to a US travel consultant.

Fare rules, baggage allowances and change policies differ by route and fare brand. Our consultants confirm the exact terms attached to your itinerary before you pay — and handle the change or refund if plans move.