How To Upgrade On LOT?
LOT Polish Airlines allows passengers to upgrade their seats to a higher-class cabin. Furthermore, there are various modes through which passengers can avail of  LOT Polish Airlines seat upgrade service including bidding for an upgrade, upgrading with miles, or at the last minute from the airline check-in counter at the airport. You can find more detailed information about this by visiting LOT Polish Airlines official website or by checking out the blog at the mentioned link.
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https://www.airlinesgrouptravel.com/blog/how-to-upgrade-on-lot