Compare 12 US airlines
Carry-on size by airline
Max carry-on size in inches and centimeters, and whether the overhead bag is free or paid by fare. Figures come from each airline’s BagRule page — confirm on the carrier site before you fly.
Figures from airline pages as of 2026-09-10 — confirm before you fly
| Airline | Max size (in) | Max size (cm) | Free vs paid by fare | Page |
|---|---|---|---|---|
| American Airlines | 22 × 14 × 9 in | 56 × 36 × 23 cm | Free on all fares, including Basic Economy | View American carry-on |
| Delta Air Lines | 22 × 14 × 9 in | 56 × 35 × 23 cm | Free on all fares, including Basic / Main Basic | View Delta carry-on |
| United Airlines | 9 × 14 × 22 in | 23 × 35 × 56 cm | Free on most Economy and above · Not free on Basic Economy for most domestic / short-haul | View United carry-on |
| Southwest Airlines | 24 × 16 × 10 in | ≈61 × 41 × 25 cm (converted) | Free on all fares — Basic, Choice, Choice Preferred, Choice Extra | View Southwest carry-on |
| Alaska Airlines | 22 × 14 × 9 in | Not published | Free — all fares incl. Saver / Main / First (Saver ≠ ultra-basic) | View Alaska carry-on |
| JetBlue Airways | 22 × 14 × 9 in | 55.88 × 35.56 × 22.86 cm | Free on all fares, including Main Base (legacy name: Blue Basic) | View JetBlue carry-on |
| Frontier Airlines | 24 × 16 × 10 in | ~61 × 41 × 25 cm (converted) | Paid: Basic, Standard · Included: Economy, Premium, Business | View Frontier carry-on |
| Allegiant Air | 10 × 16 × 22 in | 25 × 40 × 55 cm | Always a paid add-on on the base fare (personal item only included) | View Allegiant carry-on |
| Hawaiian Airlines | 22 × 14 × 9 in | Not published | Free — all fares incl. Saver / Main / First (Saver = Basic analogue, not ultra-basic / personal-only) | View Hawaiian carry-on |
| Sun Country Airlines | 24 × 16 × 11 in | ~61 × 41 × 28 cm (converted) | Always a paid add-on on the base fare (underseat personal item only included) | View Sun Country carry-on |
| Avelo Airlines | 22 × 14 × 9 in | 55 × 35 × 22 cm | Always a paid add-on on the base fare (personal item only included) | View Avelo carry-on |
| Breeze Airways | 22 × 14 × 9 in | ~56 × 36 × 23 cm (converted) | Paid: No Flex, Flex · Included: Nice, Nicer, Nicest | View Breeze carry-on |
American Airlines
- Max size (in)
- 22 × 14 × 9 in
- Max size (cm)
- 56 × 36 × 23 cm
- Free vs paid by fare
- Free on all fares, including Basic Economy
Delta Air Lines
- Max size (in)
- 22 × 14 × 9 in
- Max size (cm)
- 56 × 35 × 23 cm
- Free vs paid by fare
- Free on all fares, including Basic / Main Basic
United Airlines
- Max size (in)
- 9 × 14 × 22 in
- Max size (cm)
- 23 × 35 × 56 cm
- Free vs paid by fare
- Free on most Economy and above · Not free on Basic Economy for most domestic / short-haul
Southwest Airlines
- Max size (in)
- 24 × 16 × 10 in
- Max size (cm)
- ≈61 × 41 × 25 cm (converted)
- Free vs paid by fare
- Free on all fares — Basic, Choice, Choice Preferred, Choice Extra
Alaska Airlines
- Max size (in)
- 22 × 14 × 9 in
- Max size (cm)
- Not published
- Free vs paid by fare
- Free — all fares incl. Saver / Main / First (Saver ≠ ultra-basic)
JetBlue Airways
- Max size (in)
- 22 × 14 × 9 in
- Max size (cm)
- 55.88 × 35.56 × 22.86 cm
- Free vs paid by fare
- Free on all fares, including Main Base (legacy name: Blue Basic)
Frontier Airlines
- Max size (in)
- 24 × 16 × 10 in
- Max size (cm)
- ~61 × 41 × 25 cm (converted)
- Free vs paid by fare
- Paid: Basic, Standard · Included: Economy, Premium, Business
Allegiant Air
- Max size (in)
- 10 × 16 × 22 in
- Max size (cm)
- 25 × 40 × 55 cm
- Free vs paid by fare
- Always a paid add-on on the base fare (personal item only included)
Hawaiian Airlines
- Max size (in)
- 22 × 14 × 9 in
- Max size (cm)
- Not published
- Free vs paid by fare
- Free — all fares incl. Saver / Main / First (Saver = Basic analogue, not ultra-basic / personal-only)
Sun Country Airlines
- Max size (in)
- 24 × 16 × 11 in
- Max size (cm)
- ~61 × 41 × 28 cm (converted)
- Free vs paid by fare
- Always a paid add-on on the base fare (underseat personal item only included)
Avelo Airlines
- Max size (in)
- 22 × 14 × 9 in
- Max size (cm)
- 55 × 35 × 22 cm
- Free vs paid by fare
- Always a paid add-on on the base fare (personal item only included)
Breeze Airways
- Max size (in)
- 22 × 14 × 9 in
- Max size (cm)
- ~56 × 36 × 23 cm (converted)
- Free vs paid by fare
- Paid: No Flex, Flex · Included: Nice, Nicer, Nicest
Airline pages
- American Airlines Carry-on size
- Delta Air Lines Carry-on size
- United Airlines Carry-on size
- Southwest Airlines Carry-on size
- Alaska Airlines Carry-on size
- JetBlue Airways Carry-on size
- Frontier Airlines Carry-on size
- Allegiant Air Carry-on size
- Hawaiian Airlines Carry-on size
- Sun Country Airlines Carry-on size
- Avelo Airlines Carry-on size
- Breeze Airways Carry-on size
FAQ
- What is the most common US carry-on size in this set?
- 8 of these 12 airlines publish a 22 × 14 × 9 in carry-on max (or the same box in another axis order). See the table for larger published boxes, then confirm on the airline page before you fly.
- Do all of these airlines include a free carry-on?
- No. Carry-on is paid or fare-dependent on United Airlines, Frontier Airlines, Allegiant Air, Sun Country Airlines, Avelo Airlines, and Breeze Airways. Check the free vs paid column and the airline page for your fare.
- Which airlines publish carry-on size in centimeters?
- Southwest Airlines, Alaska Airlines, Frontier Airlines, Hawaiian Airlines, Sun Country Airlines, and Breeze Airways do not publish official cm (or mark cm as converted only). Inches on those rows are the primary published rule.
- Are wheels and handles included in the published size?
- Most of these airline pages say wheels and handles count toward the max. Measure your packed bag, not the empty marketing size on the tag.
- Where are personal item sizes?
- Use the personal item size hub, or open each airline’s personal-item page from the links below. Do not reuse another airline’s inches.
Disclaimer
Bag rules change. Confirm size, fee, and fare rules on the airline site before you travel. BagRule is a publisher site and does not sell tickets or bags.