Which airline’s carry-on size limits apply when one airline sells ticket but flight is operated by another? [duplicate]

Which airline’s carry-on size limits apply when one airline sells ticket but flight is operated by another? [duplicate] - Orange and Green Label Airplane Ticket

I am taking a flight purchased from United for Seattle (SEA) to Casablanca (CMN). Some segments are operated by other carriers but in United’s name. The ticket says:

United 4688 Operated by trans states airlines dba united express

…and…

United 8647 Operated by Air Canada Rouge

Whose luggage rules apply for the carry-on bag and the "personal item"? Unfortunately, the dimensions vary significantly between their various sets of rules.

Carry-on bag:

  • United: 22" x 14" x 9"
  • Air Canada: 21.5" x 15.5" x 9" | 55cm x 40cm x 23cm

Personal item:

  • United: 17: x 10" x 9"
  • Air Canada: 17" x 13" x 6" | 43cm x 33cm x 16cm


Best Answer

Which airline’s carry-on size limits apply

You must comply with the rules of the operating carrier. This is always the case with carry-on baggage dimensions and weight. This is due to physical differences in the aircraft. No ticket type can change the bin size ;). And safety due to seat pitch and anything else the airline determines.

Meaning, your carry-on must meet the smallest dimensions of any carrier on the itinerary. If not, the bag simply may not fit. There is no amount of bureaucratic word salad that can change basic geometry.

Note, realistically, those dimensions are effectively the same and it is highly unlikely any staff will notice unless that extra .5" UA allows prevents the AC bin from closing. If that happens, sorry, you can be Oscar Munoz, CEO of UA, and they'd still make you check the bag.

The only time baggage allowances can vary is in total allowances of checked baggage and then it depends on a number of factors such as program status and most significant carrier.




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Is carry-on size the same for all airlines?

Though you might find an inch or two of a difference with various airlines, the standard domestic carry-on luggage size is 22" x 14" x 9", which includes the handle and the wheels. This size limit ensures your bag \u2014 and ideally everyone else's \u2014 will be able to be stored safely in the overhead bin for your flight.

Can baggage allowance be combined?

Usually, combining the checked luggage allowance is allowed only between passengers on the same booking. This means that not only do you have to be on the same flight, but also share the same booking number. Normally, it doesn't matter if you're related or not, as long as you share the same booking number.

Which airlines are strict with carry-on size?

These Airlines Are Strictest With Carry-On, And These Charge The Most
  • 1 Vueling Lays Down The Law With Harsh Carry-On Rules.
  • 2 Volaris Is Sneaky With Carry-On Fees. ...
  • 3 Air Canada Doesn't Always Hold Back On Carry-On Fees. ...
  • 4 Philippine Airlines Is Strict With Carry-On. ...
  • 5 Allegiant Air Charges Customers Fees To Bring Carry-Ons. ...


  • What is interline baggage transfer?

    Interline baggage just means checked baggage that will be transported by two or more airlines.



    Top 10 Airlines in the world For 2020




    Sources: Stack Exchange - This article follows the attribution requirements of Stack Exchange and is licensed under CC BY-SA 3.0.

    Images: Torsten Dettlaff, Ricardo Esquivel, Kelly L, Daniel Torobekov