Airline Boarding Groups: How Every Major Airline Boards

How does airline boarding work?

Every airline does it differently, and the number of groups is not the interesting part. What matters is what pushes you up the order — and it is the same four things everywhere: cabin class, elite status, co-branded credit card, and on one airline, where you are sitting.

Airline	Groups	How it works
American	9 + preboarding	Groups 1–4 use the priority lane; 5–9 the main lane. Basic economy last.
Delta	8 zones + preboarding	Zone 1 is Delta One and First. Zone 8 is Basic Economy.
United	6	Window, middle, aisle for economy. Basic economy in Group 6.
Southwest	8	New from 27 January 2026. Assigned seats, groups by fare and status.
JetBlue	8	Switched from letters to numbers on 29 April 2026.
Alaska	6–8	Depends on the aircraft.

American Airlines: the nine groups

American restructured its boarding on 1 May 2025. Preboarding covers ConciergeKey members, first and business class, travellers needing assistance, and families with children under two. Then Groups 1 through 9 board in order, with basic economy last.

The split that actually matters: Groups 1 to 4 board through the priority lane, Groups 5 to 9 through the main lane. If you arrive at the gate mid-boarding and you are in Groups 1 to 4, you walk up the priority lane and the agent holds the main queue to let you on. That is the real benefit of priority boarding, and it is not the one the airline advertises.

Most AAdvantage co-branded credit cards get you Group 5. Paid priority boarding gets you Group 4 — worth knowing that Group 4 still has three groups ahead of it.

Delta: eight zones, and an unnumbered one

Delta moved to numbered zones on 1 May 2024. There are eight:

• Zone 1 — Delta One and First Class
• Zone 2 — Delta 360, Diamond Medallion, Premium Select
• Zone 3 — Comfort+
• Zone 4 — Platinum and Gold Medallion, SkyTeam Elite Plus
• Zone 5 — Silver Medallion, Main Extra, and Delta Amex co-branded cardholders
• Zone 6 — SkyMiles members in Main Classic
• Zone 7 — non-SkyMiles members in Main Classic
• Zone 8 — Main Basic (basic economy)

Preboarding happens before Zone 1. There is also an "Early Access" group for passengers with strollers and car seats, which boards after Zone 2 — and confusingly, Delta gives it no zone number at all. That unnumbered group is why you will see some guides claiming Delta has nine or ten groups.

Note Zone 5. Any Delta Amex co-branded card puts you there, ahead of every ordinary main cabin passenger, with no status required. Even the entry-level Gold card.

United boards by where you sit

United is the only major US carrier that boards economy by seat position rather than what you paid. Window seats board in Group 3, middle in Group 4, aisle in Group 5. Basic economy is Group 6.

The logic is sound — you are not climbing over someone already seated — and it makes United's boarding order the only one you can improve for free, simply by choosing a window seat.

Southwest changed everything in 2026

On 27 January 2026, Southwest ended open seating after 53 years. No more A/B/C. No more setting an alarm to check in at exactly 24 hours. No more sprint for a seat.

You now pick a seat at booking and board in one of eight numbered groups, assigned by fare type and status. Southwest credit card holders get Group 5. Without status, a card, or an extra-legroom seat, expect Groups 6 to 8.

The practical consequence is smaller than it sounds. Your seat is assigned, so boarding late no longer means a middle seat at the back. Early boarding now buys exactly one thing: overhead bin space. And because Southwest charges most passengers for checked bags, demand for that space stays high.

How to board earlier

Ranked by cost-effectiveness:

1. Get the airline's co-branded credit card. The single easiest upgrade. A Delta Amex puts you in Zone 5. A Chase United card gets you Group 2. An AAdvantage card gets you Group 5. No status required, and the entry-level versions usually work.
2. Choose a window seat on United. Free. Moves you from Group 5 to Group 3.
3. Buy an extra-legroom seat. Main Cabin Extra, Comfort+, Economy Plus — often $30 to $50 per segment, with earlier boarding included.
4. Buy priority boarding outright. Usually $15 to $40 per flight. Check what group it actually gets you — on American it is Group 4, which still has three groups ahead.
5. Earn elite status. The strongest factor on every airline, and by far the slowest to acquire.

Is early boarding worth paying for?

Only if you have a full-size carry-on and no checked bag. Then yes — an early group means guaranteed bin space, and a late group can mean gate-checking the bag you specifically packed to avoid checking.

If you are travelling with just a personal item that fits under the seat, save the money. Your seat is the same either way, and you will spend the extra time sitting on the aircraft rather than standing in the jet bridge.