Cheapest return EWR–SOF flights, May

AirHint found the following cheapest return flights from Newark (EWR) to Sofia (SOF) in May 2026 (see full year).

Return flights

10 May - 25 May Austrian Airlines
10 May - 21 May Austrian Airlines
28 May - 08 Jun FrenchBee
18 May - 01 Jun SWISS
25 May - 09 Jun Icelandair
21 May - 04 Jun Porter Airlines (Canada) Ltd
27 May - 01 Jun FrenchBee
29 May - 12 Jun FrenchBee
15 May - 22 May SWISS
29 May - 07 Jun Porter Airlines (Canada) Ltd
18 May - 22 May Lufthansa
22 May - 09 Jun Porter Airlines (Canada) Ltd
11 May - 20 May Austrian Airlines
22 May - 27 May Lufthansa
19 May - 21 May United
13 May - 17 May Austrian Airlines

Also check the deals for one-way flights from Newark to Sofia in May.

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