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

Return flights

23 Jul - 30 Jul	Air Canada
18 Jul - 23 Jul	Air Canada
08 Jul - 09 Jul	Delta
15 Jul - 18 Jul	Delta
29 Jul - 30 Jul	Delta
12 Jul - 19 Jul	Delta
12 Jul - 15 Jul	Delta
09 Jul - 11 Jul	Delta
10 Jul - 11 Jul	Delta
10 Jul - 12 Jul	Delta
29 Jul - 05 Aug	United	direct
26 Jul - 02 Aug	United	direct
30 Jul - 06 Aug	United	direct
25 Jul - 01 Aug	Delta
28 Jul - 04 Aug	WestJet
25 Jul - 01 Aug	Air Canada	direct
27 Jul - 03 Aug	WestJet
27 Jul - 03 Aug	United	direct
31 Jul - 07 Aug	United	direct
28 Jul - 04 Aug	United	direct

Also check the deals for one-way flights from Montreal to Chicago 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 Chicago

Cheap car rent in Chicago

Cheapest return flights from Montreal to Chicago in July from 156€

Return flights