Are there any flights from Saigon to Hoi An /Da Nang ? and from Hanoi to Siem Reap?

Vietnam Airlines have either 1 or 2 flights per day non-stop from Hanoi to Siem Reap( Airbus 320s ). Ho Chi Minh City ( Saigon) to Da Nang is about 5-6 non-stop flights per day, Airbus 320 or 767 aircraft, plus several others with a stop en-route.

James A (or another helpful forumite):

Can someone give me an idea of the cost for these flights? I know that it is much cheaper to buy tickets once in Vietnam, but I would like to know what I can expect to pay.
for example:
Hanoi- Danang
Danang- HCMC
Roundtrip HCMC- Siam Reap.

Thanks guys!

For Vietnam Air tix at local prices contact vietnamstay.com. Reliable. Great service!

Also, I think Bangkok Air has non-stop flights from Danang to Siam Reap. Not sure about Vietnam airlines.

Thanks Kenstee.
Perhaps Bangkok Air is no longer flying to Danang? I can't find it on their website anywhere....

Yes, Bangkok Air used to have that flight. I was recently told it has been discontinued.