Originally Posted by BOS-NWA
For the "I" bucket I can check nwa.com by using mileage upgrade option. But there is no way to check "R" bucket......
You can check R class on nwa.com, you just won't know the number of R seats on the flight. If it brings back First/Mileage Upgrade when checking the R class bucket without pulling up a Y-26/27 type fare, then there's R class available on that flight.