China Eastern Airlines is in Terminal 1 of Pudong International Airport. The subway only goes to the food court between the two terminals, and there will be signs outside the subway entrance. It takes about 15 minutes to walk.
Pudong Airport Terminal 1 (T1) Airlines:
Sichuan Airlines 3U, HUaxin Airlines AE, Hainan Airlines Hu, Korean Airlines KE, KL, Air France AF, China Airlines CI, Jixiang Airlines HO, Spring Airlines 9C, Japan Airlines JL,? Gulf Airlines GF, China Eastern Airlines MU, Tianjin Airlines GS and Huaxia Airlines G5.
Extended information:
Pudong Airport Terminal 2 (T2) Airlines:
1, EK, transasia airways GE, KA, QR, NW, LX, TK, GA and NX.
2. Philippine Airlines PR, Cathay Pacific CX, Malaysia Airlines MH, Mexican Airlines AM, Shanghai Airlines FM, Singapore Airlines SQ, Virgin Airlines VS, Eva Airways BR, Russian Airlines SU, Asiana Airlines OZ, Continental Airlines CO, China Southern Airlines CZ, Cebu Pacific Airlines 5J;
3. Air New Zealand NZ, Chongqing Airlines OQ, Delta Air Lines DL, Lufthansa LH, Air Canada AC, American Airlines AA, All Nippon Airways NH, Thai Airways TG, Air India AI, Hong Kong Airlines HX and Shenzhen Airlines ZH.
Reference: Baidu Encyclopedia-Terminal T1 of Shanghai Pudong International Airport?