American Airlines and JetBlue announced the addition of new perks for AAdvantage and TrueBlue Mosaic status members traveling on either airline. It is the latest round of customer benefits made possible by the carriers’ Northeast Alliance (NEA). When checking in for an American or JetBlue flight, AAdvantage status members and TrueBlue Mosaic members can now choose complimentary Main Cabin Extra or Even More Space seats when available. American’s Main Cabin Extra and JetBlue’s Even More Space amenities include extra legroom, early boarding and dedicated overhead bin space. AAdvantage Executive Platinum and Platinum Pro members and TrueBlue Mosaic members are also eligible for same-day confirmed flight changes when traveling on either carrier. In addition, starting in April, Admirals Club members traveling on JetBlue will be able to access Admirals Club lounges, including the newly opened lounge space at LaGuardia Airport. American’s Admirals Club lounges are membership-based lounges that feature complimentary amenities like food and beverages, Wi-Fi, business centers and kids’ rooms.