No. All you have proven is that they COULD have. It's still unlikely that they WOULD have.
In 1961, most flights in that part of the world were still by prop plane. Most definitely, if you paid economy, you did not fly jet. And the fact is, they couldn't even afford the economy fare, let alone the jet fare.
This is important because he would have flown on the scheduled airline flights (Jets) instead of the East African Airways Corporation (EAAC) chartered (from BOAC) Bristol Britannia. Apparently he was more than just your average student and the future Kenyan Government could afford his tickets.
Sure. He was flying on someone else's dime, so he could afford the scheduled flights. So?
ROFL. You just contradicted yourself! usmc must be getting to you! LOL.
To fly to London by himself he would have to fly on a jet, since he did not fly as part of the student group, he did fly by jet.
He could have flown on Air India (707), Alitalia (DC-8),East African Airways(Comet 4), BOAC (707 and Comet 4) and South African Airways (707) all had jet service out of Nairobi to Europe.
The Bristol Britannia used by the student group was a charter aircraft used only when it had cargo or passengers to make the trip worthwhile. That is how small African airlines survived, they only flew they had full loads.
The jet airlines were subsidized by their governments and could afford to charge less.
You do realize you've been suckered into a wholly different question than you began with?
The title question of this thread was pretty straightforward: why Mombasa? Where did the idea that Obama was born in the city of Mombasa come from? Why would anyone in Obama's family ever make the trip to Mombasa for childbirth, instead of either of the more logical Kenyan locales?
Most everyone avoided addressing either of those questions, and instead tried to shift attention onto other questions. And by playing along, you've now gotten yourself embroiled in the entirely unrelated question of "What kind of planes flew into Nairobi in 1961?" Jet planes also flew to Australia the year I was born. But that's not evidence that my mother flew there on one to give birth to me.
Consequently, by allowing that focus to shift, you've allowed everyone to gloss over the original matter, which was that the Mombasa location was introduced into the eligibility narrative with absolutely no supporting evidence, and that it makes no logical sense whatsoever.