AirHint found the following cheapest return flights from Chicago (ORD) to Sofia (SOF) in July 2025 (see full year).

Return flights

15 Jul - 22 Aug	Air Canada
19 Jul - 17 Aug	ITA Airways
23 Jul - 07 Aug	Air Canada
13 Jul - 06 Aug	Lufthansa
14 Jul - 06 Aug	Lufthansa
30 Jul - 13 Aug	Icelandair
27 Jul - 10 Aug	ITA Airways
14 Jul - 21 Jul	ITA Airways
26 Jul - 15 Aug	ITA Airways
10 Jul - 05 Aug	Lufthansa
14 Jul - 13 Aug	United
16 Jul - 28 Jul	ITA Airways
17 Jul - 30 Jul	Icelandair

Also check the deals for one-way flights from Chicago to Sofia in July.

The deals are updated regularly. The prices may go up as tickets are purchased by other travellers. Only the cheapest flights are offered. Select a price to book and secure these cheap prices.

Book a cheap hotel in Sofia

Cheap car rent in Sofia

Cheapest return flights from Chicago to Sofia in July from $625

Return flights