You can arrive at ITM one hour ahead and have plenty of time. Actually, 30 minutes ahead of departure is doable, but best give yourself a bit more time if you're not used to the airport. The airport is domestic only, small, and easy to navigate. You will see signs pointing you to special check-in counters for passengers transiting to international flights at Narita or Haneda. I would make the choice based on preferred arrival time at your final destination.

airport: HND
arriving airline: JAL (SIN-HND)
departing airline: JAL (HND-JFK)
Connection time: 1hr 15 mins
Connection: INT-INT
Traveling on single reservation

Any chance of this working out? Or should I not bother?

No problem, 1 hr. and 15 min. is enough, unless you are hoping to do shopping and lounge visit. International Terminal of HND is not that large. JL is aware of transit passengers, if your flight from SIN was delayed then there will be JL ground crew waiting upon arrival.

Thanks, AlwaysAisle!

Looking for Advice:

Airport: NRT
Arriving Airline: 1 PAX ANA F, 1 PAX ANA J (LAX - NRT) Arrive NRT at 1510 hours
Departing Airline: KE or OZ
Option 1: Both PAX KE Y (NRT - ICN)
Connection time: 1 hr 45 mins. Arrive ICN 1950 hours
Option 2: Both PAX OZ Y (NRT - ICN) Arrive ICN 2130 hours
Connection time: 3 hr 45 mins.
Connection: INT - INT
Separate reservations: Both the ANA F/J are award tickets while the KE/OZ will be cash fare. We will be checking in luggage.

I believe both KE and OZ are in T1 of NRT so we would not have to switch terminals but i am not 100% certain.
Ideally option 1 would be better since it will allow us to salvage some time in Seoul, while option 2 will give us more peace of mind (in case of delays) and we will be able to utilize the lounge and do some shopping. However we will arrive into ICN late at 2150 hours then travel to our hotel in Seoul.
Thanks in advance

First thing you need to do is to call ANA and ask if ANA will interline and through check baggage on two separate tickets when connecting airlines is not Star Alliance. If ANA says they will not through check baggage then you need to collect your luggage at NRT, go through customs, go to check in area and check your luggage to ICN.

Check with ANA and find out.

When connecting to OZ, which is Star Alliance, I think there is better chance that ANA will through check your luggage and you do not have to deal with your luggage at NRT. But call ANA and find out.

With separate reservation, option 2 would be no-brainer if ANA can not through-check.
If they can, I think option 1 should be fine with >90% certainty although I personally would just go with option 2 just because I'm very risk-adverse.
It's not like option 2 is a 6-hour layover or arriving into Seoul at God-awful hour. A 3-4 hr layover goes by fast if you have lounge access.

Connection in OKA
 

Flying in from Seoul ICN to Okinawa OKA on Korean Air, arriving at 17:55. Am I likely to make a same day connection to Ishigaki ISG, departing on the ANA flight at 19:30? That is the last flight to ISG for the day. Or should I resign myself to staying overnight in OKA? (This would be on two separate tickets.) Thanks, everyone.

If you have luggage, I will say not a chance. Even with luggage, you'll need good fortune and a seat in the front of the plane to make it.

INT-DOM trf at HND ( BA to JL )
 

Hi,

I am thinking of coming back to Osaka in late July ( probably hot and humid ) as there is a good deal from DUB via LHR

The connection would be

Arrive HND Intl tem around 710am ( BA)

Connecting to JL to Osaka ITM at around 930am)

It looks like i have to pick up my bags ,clear customs drop them off and them transfer to the JL domestic teminal ( i asume there wil be a lounge in the domestic area for a OW Emerald) and c 2hrs 10m shoud be ok barring a delay?

Many thanks

TBS

2h 10m is fine for the commection.on one ticket. No problem at all.

There is the Diamond Premier lounge for OWE. By far not as fancy as it sounds, but you can get a shower and light refreshments

Hi,

Many thanks CPH-Flyer!

Regards

TBS

KIX / ANA to HND / Dom-Int / 1:10 / AC - single ticket

Plenty of time. Your luggage, if any, will be forwarded. Follow the signs for international connections.

Forwarded?

Do you mean my luggage gets sent via separate plane to HND?