AirHint found the following cheapest return flights from Chicago (ORD) to Frankfurt (FRA) in June 2025 (see full year).

Return flights

28 Jun - 11 Jul	Spirit Airlines
22 Jun - 30 Jun	Icelandair
24 Jun - 24 Jul	Icelandair
30 Jun - 22 Jul	Icelandair
21 Jun - 02 Jul	Spirit Airlines
22 Jun - 09 Jul	Icelandair
18 Jun - 25 Jun	Spirit Airlines
28 Jun - 12 Jul	Spirit Airlines
21 Jun - 04 Jul	Spirit Airlines
15 Jun - 16 Jun	Air Canada
26 Jun - 29 Jun	Icelandair
21 Jun - 28 Jun	Spirit Airlines
20 Jun - 04 Jul	jetBlue
21 Jun - 30 Jun	jetBlue
21 Jun - 01 Jul	jetBlue
15 Jun - 08 Jul	jetBlue
16 Jun - 24 Jun	Lufthansa	direct
18 Jun - 25 Jun	United	direct
26 Jun - 29 Jun	Lufthansa	direct
16 Jun - 23 Jun	Lufthansa	direct

Also check the deals for one-way flights from Chicago to Frankfurt in June.

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.

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Cheapest return flights from Chicago to Frankfurt in June from $897

Return flights