Earlier I mentioned the flight sale that is on until tomorrow or the day after so if you search Google flights from LAX- NRT here is what you see for Singapore on March 6th departure and return on March 8th
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If I want to pay the $583 round trip flight with my UR points, I would log on to my Chase account, go to the UR portal and select travel and look up the flight. Here is what I find. It would cost me 38,194 points to pay for that flight with my UR points from my CSR account. If you have a CIP or CSP account then it would cost you 45,840 points.
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Now of course I'd want to see if it costs me less for paying with points or for booking an award ticket. So I would check Singapore to see how many points an award flight would be. It is 70,000 miles for an award flight. In this case, I would rather pay with points in the UR portal over transferring points for an award flight.
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If I wanted to check other possibilities for partner award space through United then here is what I find. I can see saver award space on ANA for 35,000 miles each way. So 70k miles.
However, I also see business saver awards on ANA for 80,000 miles each way. So 160K miles round trip and the taxes and fees are $45.81.
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The same business class flight flight in real money costs over $3,528 and if I try to pay with UR points it would cost me 235,260 UR points. Here I am better off transferring 160,000 UR points to United to book the award flight.
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Hope this helps.