Author: GrowthPath Studio

✅ Most under-seat spaces fit 18 × 14 × 8 in bags, but dimensions vary by aircraft.

Aircraft	Under-Seat (inches)	Notes
Boeing 737	~18 × 14 × 8	Consistent across U.S. fleets
Airbus A320	~17 × 13 × 8	Narrower middle seats
Embraer 175	~17 × 14 × 8	Regional jet

Gotchas

• Window seats may have less height due to box under seat.
• Exit rows sometimes have no under-seat storage.

Sources

United – Aircraft Information
Delta – Fleet Guide

✅ You may carry liquids, gels, and aerosols in containers up to 3.4 oz (100 ml) in a 1 quart-sized bag, 1 per passenger.

Container Max	Bag Size	Quantity	Notes
3.4 oz (100ml)	1 quart	1 bag	Per passenger

Gotchas

• Exceptions: baby formula, medication, duty-free.
• TSA may test liquids at checkpoint.

Sources

TSA – Liquids Rule

✅ A personal item (18 × 14 × 8 in typical) fits under the seat, while a carry-on (22 × 14 × 9 in typical) goes in the overhead bin. Both are included in most U.S. fares.

Type	Max Size (inches)	Placement	Notes
Carry-On	22 × 14 × 9	Overhead bin	Larger suitcase or roller
Personal Item	18 × 14 × 8	Under seat	Backpack, tote, laptop bag

Gotchas

• Basic Economy may allow only personal item.
• Some airlines (Frontier, Spirit) charge for carry-ons.

Sources

United – Carry-On Baggage Policy
JetBlue – Carry-On Rules

✅ Yes, wheels and handles count toward your carry-on size limit on almost every airline. A bag advertised as “22 × 14 × 9” usually excludes wheels/handles, but airlines measure the full outside dimensions.

Measurement	Includes	Notes
Carry-On	Wheels + handles	Always measured at check-in
Personal Item	Straps/handles	Must fit under seat

Gotchas

• Some luggage brands market “carry-on size” without wheels.
• Gate agents may force-check borderline bags if wheels push over.
• Always measure total exterior before flying.

Sources

American Airlines – Official Carry-On Policy
Delta – Baggage Information

✅ Caribbean Airlines allows all passengers 1 carry-on up to 22 × 14 × 9 inches (56 × 36 × 23 cm), maximum weight 22 lbs (10 kg).
In addition, 1 personal item is permitted such as a handbag, laptop bag, or backpack.

Fare Type	Carry-On Size (inches)	Weight Limit	Personal Item
All	22 × 14 × 9	22 lbs (10 kg)	Yes

How to Measure Your Bag

1. Measure wheels and handles too.
2. Confirm bag is under 22 × 14 × 9 inches.
3. Weigh carry-on — must be under 10 kg.
4. Ensure personal item fits under the seat.

Gotchas / Common Issues

• Caribbean Airlines enforces the 10 kg limit.
• Oversized or overweight carry-ons are checked into hold luggage.
• Only 1 personal item allowed in addition to main carry-on.

Sources

Caribbean Airlines baggage policy

✅ Avianca allows all passengers 1 carry-on up to 22 × 14 × 10 inches (55 × 35 × 25 cm), maximum weight 22 lbs (10 kg).
In addition, 1 personal item is permitted such as a handbag, laptop bag, or backpack.

Fare Type	Carry-On Size (inches)	Weight Limit	Personal Item
All	22 × 14 × 10	22 lbs (10 kg)	Yes

How to Measure Your Bag

1. Measure wheels and handles too.
2. Confirm carry-on is within 22 × 14 × 10 inches.
3. Weigh carry-on — must be under 10 kg.
4. Ensure personal item fits under the seat.

Gotchas / Common Issues

• Avianca enforces the 10 kg carry-on rule.
• One personal item is allowed, but it must be smaller than the main carry-on.
• Oversized or overweight bags will be checked at the gate.

Sources

Avianca baggage policy

✅ GOL allows all passengers 1 carry-on up to 22 × 14 × 9 inches (55 × 35 × 25 cm), maximum weight 22 lbs (10 kg).
In addition, 1 personal item is allowed, such as a purse, laptop bag, or backpack.

Fare Type	Carry-On Size (inches)	Weight Limit	Personal Item
All	22 × 14 × 9	22 lbs (10 kg)	Yes

How to Measure Your Bag

1. Measure including wheels and handles.
2. Confirm bag is under 22 × 14 × 9 inches.
3. Weigh carry-on — must be under 10 kg.
4. Ensure personal item fits under the seat.

Gotchas / Common Issues

• GOL enforces weight limits at check-in and boarding.
• Only 1 personal item in addition to the carry-on.
• Oversized or overweight carry-ons will be gate-checked.

Sources

GOL Linhas Aéreas baggage policy

✅ Azul allows all passengers 1 carry-on up to 22 × 14 × 9 inches (55 × 35 × 25 cm), maximum weight 22 lbs (10 kg).
In addition, 1 personal item such as a handbag, laptop bag, or small backpack is allowed.

Fare Type	Carry-On Size (inches)	Weight Limit	Personal Item
All	22 × 14 × 9	22 lbs (10 kg)	Yes

How to Measure Your Bag

1. Measure including wheels and handles.
2. Ensure carry-on is within 22 × 14 × 9 inches.
3. Weigh carry-on — must be under 10 kg.
4. Confirm personal item fits fully under the seat.

Gotchas / Common Issues

• Azul enforces 10 kg limit at check-in and boarding gates.
• Only 1 small personal item in addition to the main carry-on.
• Oversized or overweight carry-ons are checked.

Sources

Azul Brazilian Airlines baggage policy

✅ Air Transat allows all passengers 1 carry-on up to 20 × 16 × 9 inches (51 × 40 × 23 cm), maximum weight 22 lbs (10 kg).
All passengers may also bring 1 personal item such as a purse, backpack, or laptop bag.

Fare Type	Carry-On Size (inches)	Weight Limit	Personal Item
All	20 × 16 × 9	22 lbs (10 kg)	Yes

How to Measure Your Bag

1. Measure including wheels and handles.
2. Ensure carry-on is within 20 × 16 × 9 inches.
3. Weigh your carry-on — must be under 10 kg.
4. Confirm personal item fits under the seat.

Gotchas / Common Issues

• Air Transat enforces the 10 kg carry-on weight limit.
• Only 1 personal item allowed in addition to the carry-on.
• Oversized or overweight carry-ons must be checked.

Sources

Air Transat cabin baggage policy

✅ WestJet allows all passengers 1 carry-on up to 21 × 15 × 9 inches (53 × 38 × 23 cm), plus 1 personal item such as a backpack, purse, or laptop bag.
There is no official weight limit, but bags must be light enough to lift into the overhead bin unassisted.

Fare Type	Carry-On Size (inches)	Weight Limit	Personal Item	Notes
All	21 × 15 × 9	None stated	Yes	Must fit in overhead + be liftable

How to Measure Your Bag

1. Measure including wheels and handles.
2. Confirm bag is under 21 × 15 × 9 inches.
3. Ensure personal item fits fully under the seat.
4. Check you can lift your carry-on overhead unassisted.

Gotchas / Common Issues

• No official weight rule, but gate agents may test if you can lift it.
• Bag sizers are used to check size compliance.
• Oversized bags will be gate-checked.

Sources

WestJet cabin baggage policy