Brother decides last-minute to join sibling's PhD graduation celebration abroad, complains when he has to pay for accommodation: 'He took my spot in the already-booked Airbnb'

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Jesse Kessenheimer • Writer and Editor
May 22, 2026 5:00 PM EDT

Why is it so hard for siblings to be fair? 

A brother decided at the last minute that he would fly abroad to celebrate his sibling's PhD graduation celebration; however, because he was so late in deciding, everything was already booked. Instead of figuring out his own accommodation and flights, he stole his brother's spot in the rental house, then refused to pay his fair share. So at the end of the day, this sibling not only took over the travel plans but tainted the entire celebration weekend with his entitlement. 

I have an older sister, and we've spent our lives at odds about fairness. We're the type of siblings who slice a cake and give the other one the smaller slice, and we're the ones who taste both coffees and decide to keep the one we like best (regardless of whether or not it's the one we ordered). Although it's not always pretty, it's always in good spirits, and this sibling rivalry is executed in a fun way. It's lighthearted; we don't actually want the other to suffer. 

Yet, in this story, it seems like the brother just wanted to take a vacation for free, regardless of whom it cost to pay for it. In this case, it cost his sibling, the one whom the whole family was flying across the world to celebrate. He couldn't, for one weekend, let his brother be the center of attention without gaining something for himself in the process. 

Although nothing is every 100% fair when it comes to sibling relationships, it's certainly not fair for this guy to come in at the last minute and ruin his brother's PhD celebration, stealing his spot in the accommodation rental, and claiming he deserved it. The family was at odds over who was right in this situation, but it sounds to me like the sibling getting his doctorate should be the one given a free place to stay and a paid-for flight. Mom just wanted to silence the waters of strife, but there are some sibling feuds that need to rock the boat a little in order to get solved fairly.

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  • Cheezburger Image 10631735040
    via Canva+ (SeventyFour)

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  • AITAH for not paying for the Airbnb? My 3 family members and I are traveling from South America to attend my PhD graduation in the California in a few weeks.
    via ereini0n
  • My mother made a Splitwise for the 4 of us to split major expenses such as airfare, rental car, housing. My brother (not part of the "4 of us") lives in NYC and decided he will fly out from there to
    via ereini0n
  • attend. He announced this after I booked the Airbnb, paid for it, and added it to the Splitwise (that he is not part of as he announced he would be attending late). My brother has some friends
    via ereini0n
  • in Cali that he has been wanting to se, so will fly out a few days in advance to hang out with them (in my 6 years of attending my PhD program he has never visited me).
    via ereini0n
  • Here's the issue: he wants to stay in our Airbnb for his last 2 days of the trip (Airbnb is booked for 3 nights, so 2/3 of the booking) even though the booking is for max 4 people. To
    via ereini0n
  • Cheezburger Image 10631734528
    via Getty Images (Leo Patruzi)

    Image is representative only and does not depict the actual subjects of the story.

  • accommodate this I will be staying with a friend from university for those 2 days. Now that this has been finalized I sent the link to the Splitwise in the family group chat and said brother can join it so
    via ereini0n
  • that he can pay for his part of the Airbnb. My brother said it is unfair he has to pay as he is coming all the way out from the East Coast. My mother says I am being
    via ereini0n
  • Cheezburger Image 10631734784
    via Canva+ (RichVintage)

    Image is representative only and does not depict the actual subjects of the story.

  • petty and cheap and should just pay for him because she paid for a couple of lessons for me to get my drivers license 10+ years ago and paid for other things when I was a teenager, but I honestly don't see why I
    via ereini0n
  • should pay for all 3 nights in the Airbnb and not just 1 when he will be taking up what should have been "my" bed for 2 of the 3 nights? AITAH for adding him to the Splitwise?
    via ereini0n
  • tldr; My brother decided last-minute to join our family trip for my PhD graduation, took my spot in the already-booked Airbnb for most of the stay, and now refuses to help pay for it while my mom says I'm petty for asking.
    via ereini0n
  • Fun-Photograph156 Just tell him you're staying all 3 nights, there's no room for him, he'll have to find his own accomodation.
    via Fun-Photograph156
  • lamNotTheMama ⚫ Make mom pay for brother if she thinks so little of you
    via lamNotTheMama
  • Adagio_4_Strings If he won't pay for his share, then reclaim your spot in the AirBnb. You're not being petty, but he is. And so is your
    via Adagio_4_Strings
  • mother by bringing up expenses she paid for years ago when you were a teenager and presumably under her care. That's what parents are supposed to do.
    via Adagio_4_Strings
  • Ok_Conversation 9750 He's the one who decided to attend at the last minute. He's the one who should find himself other accommodations. This is YOUR graduation. Not his.
    via Ok_Conversation 9750

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