Just got my MP Visa and it scared me a bit. I purchased a rev ticket to Sapporo and the charge showed SFO-NGO-CTS-NGO-SFO with ANA codeshare and UA flight nums.

Wife did an award and the charge (for taxes) showed SFO-NGO-SPK-NGO-SFO with ANA codeshare and ANA flight nums.

Now I know that we are on the same flights because I called in to make seat arrangements but for a second thought that they might have changed her itin afterwards... A quick google showed that SPK was Sapporo, Japan.

Does Sapporo have two airport codes?