Yes, you can fly with a carry on and backpack on almost every airline. You’re allowed to bring one piece of carry-on luggage and one personal item, such as a backpack, provided the backpack fits under the seat in front of you.
Rules for your carry on and backpack
Most major carriers permit these two items for all passengers regardless of the fare class. However, some budget airlines have stricter limits that require you to pay extra if you exceed the baggage allowance.
| Your situation | Answer | Why |
|---|---|---|
| Standard economy ticket | Yes | Two items are allowed |
| Basic economy ticket | Usually yes | Personal item is free |
| Budget airline flight | Check rules | Carry-on often costs extra |
| Regional small plane | Limited | Overhead bins are small |
| International travel | Yes | Two items are standard |
| Full flight capacity | Maybe | Bin space might run out |
What decides your baggage allowance
The primary factor determining if you can bring both items is the specific fare class you purchased. While the personal item is almost always included, the carry-on bag is sometimes restricted on the cheapest “Basic Economy” or “Light” fares. These tickets might only allow a personal item that fits under the seat, forcing you to pay a fee if you want to bring a larger bag for the overhead bin.
Weight limits also vary by carrier and destination. Some international airlines, such as those governed by IATA baggage guidelines, enforce strict weight limits for carry-on bags, often capping them at 7kg to 10kg. If your bag is heavier than the limit set by your specific airline, they may force you to check it at the gate. If your fare is “Basic,” expect to pay a fee for a carry-on; if it is “Standard,” you’re usually safe.
How to pack for two bags
- Measure your backpack: Ensure your backpack is small enough to slide under the seat, which is typically around 18 x 14 x 8 inches.
- Pack heavy items in the carry-on: Place your heaviest belongings in the main carry-on bag to keep the backpack light and easy to handle while walking through the airport.
- Keep essentials in the backpack: Store your passport, phone, charger, and medications in your backpack so they’re accessible during the flight.
- Verify the carry-on size: Check your airline’s website for the maximum dimensions allowed for overhead bins, which are usually 22 x 14 x 9 inches.
- Use compression packing cubes: These help you fit more clothes into your carry-on without exceeding the size limits.
The common mistake with luggage
The most frequent error travelers make is assuming their backpack counts as a carry-on rather than a personal item. If your backpack is oversized, the gate agent may force you to check it, which can be quite expensive compared to the cost of a standard ticket depending on the airline’s policy.
This happens when the bag is too large to fit under the seat or when the overhead bins are full. Always ensure your backpack is soft-sided so you can squeeze it into tight spaces if the aircraft is crowded.
When to seek extra help
- Medical equipment: If you have special medical devices, contact the airline’s disability desk before your flight to ensure they count as extra items.
- Oversized items: If your gear exceeds the airline’s published dimensions, you must pay for checked baggage at the counter.
- Weight concerns: If you suspect your bag exceeds the weight limit, use a handheld scale before leaving home to avoid surprise fees.
Frequently asked questions
Can I bring a laptop bag and a backpack?
You can usually bring both if one acts as your personal item and the other is your carry-on. If both bags are large, you must consolidate them into one carry-on and one personal item.
How long can my carry-on bag be?
Your carry-on bag shouldn’t exceed 22 inches in length, including the wheels and handles, on most domestic airlines. Always check your airline’s specific size requirements before you head to the airport.
Is it safe to put my backpack in the overhead bin?
It’s safe to put your backpack in the overhead bin, but only if there’s enough space left after everyone has boarded. If the flight is full, the crew may ask you to move it.
What happens if my backpack is too big?
If your backpack is too big for the space under the seat, the gate agent will likely require you to check it. This usually results in a fee for oversized or overweight luggage.
Does it matter if my backpack has a frame?
It matters because a rigid frame makes it difficult to fit the bag under the seat. If the frame prevents the bag from fitting, the flight crew will treat it as a carry-on bag.
How much does a second carry-on cost?
The cost for an extra carry-on is determined by your ticket type and airline policy. Some airlines charge a significant fee if you exceed your allowed limit at the departure gate.
Conclusion
Start by checking your boarding pass to see if your ticket includes a carry-on bag or only a personal item. You’ll know you’re ready to board when your main bag fits in the overhead bin and your backpack slides easily under the seat. If you have more than two bags, you must consolidate them or pay for checked luggage before reaching the gate.