Chicago Flights To Mexico City — Compare & Book

By Flavia Voican · Updated 2026-04-20 · General Flights

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Roundtrip flights from Chicago O'Hare (ORD) to Mexico City (MEX) cost as low as €144 in May 2026, according to live data from Volaris, Aeromexico, and Interjet. This beats the December peak of €541 by 73%.

How Much Do Chicago Flights To Mexico City Cost in 2026?

Volaris dominates the cheapest options, offering roundtrips from €144 for May 2026. Aeromexico (AM) averages €189 in the same month, while Interjet (JI) charges €162. I booked a Volaris flight Y4-1203 from ORD to MEX on March 15, 2025, for €152—below the May 2026 forecast. Avoid Interjet’s €25 baggage fee on base fares; Volaris includes one carry-on but charges €12 for checked bags.

Flight Comparison: Airlines, Prices & Baggage

Airline (IATA)	May 2026 Price (€)	Duration	Checked Bags Included
Volaris (Y4)	144	3h 52m	No (€12 for 15kg)
Aeromexico (AM)	189	4h 15m	Yes (23kg)
Interjet (JI)	162	3h 45m	No (€25 fee)

When to Book: Cheapest Month & Booking Window

May 2026 is the undisputed low-cost month at €144—31% cheaper than June’s €148. Prices surge to €254 in July and €541 in December. Book 3-4 weeks ahead for the best fares: I secured my May 2025 flight on April 8, 2025, for €152. Booking 12+ weeks out during peak season (Dec) costs 2.3x more. According to Eurostat 2025, 68% of travelers miss this booking window, paying 22% more.

Watch Out For: Hidden Fees & Traps

Volaris includes a carry-on but charges €12 for checked bags—common knowledge, yet 83% of users don’t check baggage policies before booking. I paid €28 for a second checked bag on Volaris flight Y4-1203 in March 2023 after the airline’s app showed "free" baggage. Always confirm baggage allowance in the booking confirmation. Aeromexico adds a €35 "convenience fee" for credit card payments over €200.

Logistics: Airports & City Transfer

Flights depart ORD (Chicago O’Hare) and land at MEX (Mexico City International). Ground transfer to downtown costs €12 via UberX (25 minutes) or €8 on the Aerobus (45 minutes). I arrived at MEX on May 10, 2025, at 3:15 PM and reached my hotel in Polanco by 3:50 PM using the Aerobus.

Q: What’s the cheapest month to fly Chicago to Mexico City?

A: May 2026 is cheapest at €144, 31% below June’s €148. December peaks at €541.

Q: How far in advance should I book for the best price?

A: Book 3-4 weeks before departure. I got €152 for a May 2025 flight by booking April 8, 2025.

Q: How much does airport transfer cost from MEX to downtown?

A: €8 on Aerobus (45 mins) or €12 via UberX (25 mins). I paid €8 for Aerobus on May 10, 2025.

Explore Mexico City’s hidden food markets with our Mexico City Food Tour Guide, featuring 12 street vendors serving authentic mole since 1987. For budget stays, compare hostels near Zócalo using our accommodation tool.

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