Traveling with airlines for a group trip is the best way to reach the destinations. If you also booked a group flight in a standard cabin on an airline, and are thinking of upgrading your flight without paying a fee, some airlines do offer a Complimentary Upgrade for group travelers. To upgrade your seat with these features, consider booking a flight on obscure airlines, keep an eye on the airline upgrade deals, be loyal to airlines, and choose the journey on a quiet travel day.