Try Google flights late May 2018

UA doesn't fly to KUL. Maybe NH codeshare?
Please give linky, such as GF. I don't believe an all UA itinerary exists.

Yes, it's UA/NH through TYO. $470 from west coast, $579 from EWR.

Good find. All UA coded but TYO-KUL operated by NH. K fare, very limited dates available.

Update 4/12/2018 Yes, it is a code-share. Sorry, new to posting ... still learning the ropes what I can and cannot post on the forum.
UA + NH HNL - KUL RT for < $500
Google.com/flights Departure date May 25

I'm surprised that no one has mentioned that this allow you to visit both Kuala Lumpur and Tokyo for under $650. Here's an example from EWR around Labor Day: https://bit.ly/2vg9yQc

Without reading the fare rules, codeshares through TYO "usually" have $100 stopover fees, hence the ~$550 vs $650 pricing with the quick stopover in Tokyo.

I've found a EWR-LFW-ADD-SIN-KUL-SIN-ADD-ABJ-EWR routing on Ehtiopean Airlines for USD 1045 (Aug 19-Aug 26). An epic trip!

Here's a double open jaw I can actually use:

Aug 19 LGA-IAD-NRT-KUL
Aug 28 HKG-HND-SFO-YYJ

All in K class with UA/NH.
Price in USD: 470
Price in CAD: 585
[Add a separate ticket from KUL to HKG.]

Well done.. this is the same logic as the SIN/BKK DOJ

How are you pricing this? I'm trying on ITA Matrix and seeing much higher numbers.

https://www.google.com/flights/#flt=...091*.USD.47091

Just an FYI - when someone posts some sort of double open jaw / canada / us / asia construction.. ITA or GF may not work.. just keep trying.

Perfect. Thank you!