Will my one-way flight to Thailand with onward travel to Cambodia be accepted by immigration and my airline?

and I think at this point the O/P knows it's air carrier dependent so and they will check with their carrier,

Thanx one and all (y)

The airlines just want to see an exit ticket from Thailand to any other destination. Can be a bus ticket also.

well I am half way there I had no probs at Manchester airport the lady just said are you doing a border run as you have no visa and your here until April I wasn't asked for any docs eg vaccine,insurance,flight etc

Depends on the carrier. In my experience Gulf Air have never asked to see return/onward flight or visa, Lufthansa and Finnair have always asked. I have never been asked by Thai immigration for proof of onward travel.

Depending on the airline. On my return flight end of August the airline refused all passengers without a visa when they didn't have a connecting flight same day of arrival

Tod is right, it absolutely depends on the carrier (and sometimes immigration aren't that fussy!). My airline asked me why I only had a one way ticket, and I explained that I was landing and applying for a retirement visa. They were more than happy with that. (I did have a throwaway ticket but was never asked for it either by the airline or immigration).

Some airlines are excessively picky because they have to bear the cost of flying you back if things go wrong, and half the time the check-in staff play it very safe.

READ THIS POST people before you comment. The O/P has a one way flight here with one carrier BUT then BEFORE their 45 day stamp runs out they have a flight OUT of thailand on another carrier (meeting the proof of onward travel requirement in place by most carriers)

They need to check with their air carrier, because some carriers say you have to show a "return ticket" <- that means going back to where you come from not just bouncing to cambodia..

@Phil *******

check with your air carrier to see if their policy for you flying visa exempt is only onward travel (when your cambodia ticket will work) OR if they require a return ticket.

You won't have ANY issues stamping in here IF you manage to check in with your airline.

Yes, if you have a flight ticket for onward travel before the date you will initially be stamped in for you will be ok

Mostly likely will be ok ☺️.

Suggest you ask your airline.

Thai immigration will NOT be a problem with your planned itinerary