Yes, you can bring a backpack with your carry on as a personal item. Most airlines allow you to carry one standard carry-on bag and one smaller personal item, such as a backpack, as long as it fits underneath the seat in front of you.
Can you bring a backpack as a carry on
Airlines usually define your “carry-on” as the bag you place in the overhead bin, while your “personal item” is a smaller bag that must fit under your seat. Because these policies change based on your ticket type, you should always verify the specific size limits on your airline’s website.
| Your situation | Answer | Why |
|---|---|---|
| Basic economy ticket | Yes, usually | Airlines often allow one personal item. |
| Two large bags | No | Only one item fits under the seat. |
| Regional flight | Yes, with size check | Small planes have limited bin space. |
| Connecting flights | Yes | Rules apply to the whole journey. |
| Full overhead bins | Yes | Personal items must go under seats. |
| Oversized backpack | No | It won’t fit under the seat. |
What decides your baggage allowance
The primary factor determining if you can bring a second bag is the specific baggage policy of your airline. Most major carriers, such as Delta or United, permit one carry-on and one personal item for all passengers, but low-cost carriers may charge extra for anything beyond a single small bag. The physical limit is the space beneath the seat in front of you; if your backpack is too bulky, it may be forced into the overhead bin, which might not be allowed if that space is already full. According to TSA baggage guidelines, you must ensure your items pass through X-ray screening without blocking the flow. If your ticket includes a personal item, you can bring the backpack; if your fare class limits you to one bag total, you must choose between the carry-on or the backpack.
How to pack your items
If you’re bringing both a carry-on and a backpack, follow these steps to ensure you stay within airline limits and avoid gate-check fees.
- Measure your backpack to ensure it fits under a seat, which is typically 18 x 14 x 8 inches for most major US airlines.
- Pack heavy items in your main carry-on bag to keep your backpack lightweight and easier to slide under the seat.
- Place essentials like your passport, wallet, and medication inside the backpack so you have easy access during the flight.
- Organize tech cables in a small pouch inside the backpack to avoid tangles during security screening.
- Verify the weight of both bags, as some international airlines have a combined weight limit of 15 to 22 pounds for all cabin baggage.
The mistake people make
The most common mistake is overpacking a backpack until it becomes too thick to fit under the seat. This forces you to put the backpack in the overhead bin, which is often forbidden if you have already used your carry-on allowance for that space. This can lead to a gate-check fee or a requirement to check your bag into the cargo hold, which may be quite inexpensive compared to other travel costs depending on the airline. Always test your bag in a mock space at home that matches the standard 8-inch depth limit before you head to the airport.
When to stop and get help
- Bag exceeds dimensions: If your backpack is larger than the airline’s official personal item size, it will likely require a checked-bag fee.
- Medical equipment: If you’re carrying specialized medical devices, contact the airline’s accessibility desk before your flight.
- Excessive weight: If your bag is too heavy to lift safely into the overhead bin, ask a gate agent for assistance rather than risking injury.
Frequently asked questions
Can I bring a backpack and a rolling suitcase?
Yes, you can bring both as long as the backpack serves as your personal item and the suitcase is your carry-on. The backpack must fit under the seat in front of you.
What happens if my backpack is too big?
If your backpack is too big, the gate agent may force you to check it into the cargo hold. This often results in a fee that varies based on the airline’s current baggage policy.
Is it safe to put my laptop in my backpack?
Yes, it’s safe to put your laptop in a backpack, but you must remove it for security screening. Ensure the backpack has a padded sleeve to prevent damage during the flight.
How long does it take to clear security with two bags?
It typically takes 5 to 10 minutes longer to clear security with two bags. You must remove all electronics from both bags and place them into separate bins for the X-ray machine.
Does it matter if my backpack is heavy?
Yes, it matters because most airlines have a total weight limit for cabin bags. If your combined weight exceeds 22 pounds, the airline may require you to check one of your bags.
Can I bring a backpack if I am in basic economy?
Yes, most basic economy fares still allow one personal item. Check your specific ticket confirmation, as some ultra-low-cost carriers may charge a fee for any bag brought into the cabin.
Do I need to weigh my backpack before the airport?
Yes, you should weigh your backpack to ensure it stays under the limit. Most airlines allow a personal item, but they may weigh it if it appears significantly larger than a standard bag.
Can I bring a backpack on a small regional plane?
Yes, but you may be required to valet-check your carry-on bag at the gate. You should keep your backpack with you, as it’s small enough to fit under the seat.
Conclusion
Start by checking your airline’s specific dimensions for a personal item on their website. If your bag fits those measurements, you can bring it alongside your carry-on. If you find your bag is significantly larger, you must check it at the counter to avoid gate fees.