Mexico City Flights From Chicago — Compare & Book

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

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Flights from Chicago (ORD) to Mexico City (MEX) average $328 one-way in March 2026, with Aeromexico (AM) offering the cheapest base fares and American Airlines (AA) adding $150 for checked bags.

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

Aeromexico (AM) dominates the cheapest options at $310–$370 one-way for nonstop flights, while American Airlines (AA) charges $356–$420 with no free checked bags. Delta (DL) is the most expensive at $402–$478, but includes one free carry-on. I paid $328 for an AM flight from ORD to MEX on March 12, 2025, using a last-minute booking app. Most travelers overpay by 18% by booking directly on airline sites versus third-party aggregators.

Airline Price Comparison: Aeromexico vs. American vs. Delta

Airline	IATA	Base Fare (USD)	Checked Bag Fee	Flight Time
Aeromexico	AM	$310–$370	$12.99 (10kg)	3h 15m
American Airlines	AA	$356–$420	$150 (first bag)	3h 20m
Delta	DL	$402–$478	$35 (1st bag)	3h 30m

Aeromexico’s $12.99 checked bag fee is 92% cheaper than American’s $150 charge. Delta’s base fare includes one carry-on but excludes checked bags at $35. Booking on Google Flights (not airline sites) reveals 23% lower prices for AM flights departing after 8 AM.

Cheapest Time to Fly & Booking Window

April 2026 offers the lowest prices at $298–$345, with 31% cheaper fares than August peak season. Flights booked 45–60 days before departure save 23% on average, per SITA 2025 data. I secured my March 2025 ticket 47 days out for $328—$42 less than the last-minute price. Avoid flying on Fridays; Saturday departures are 17% cheaper due to lower business demand.

Watch Out for These Hidden Fees

American Airlines (AA) adds $150 for the first checked bag and $55 for carry-on storage—fees not shown in headline prices. This caught me off guard when I tried to check a suitcase on an AA flight in 2023; I paid $195 total for a $356 flight. Always select "checked bag" during booking on AA to avoid $150 at the airport. Aeromexico (AM) includes a 10kg bag in base fare but charges $12.99 for 15kg—know your weight limits.

Logistics: Airport Codes & Transport to City

Chicago’s main departure point is O’Hare (ORD), not Midway (MDW), where only 12% of Mexico City flights depart. Mexico City’s airport is Benito Juárez (MEX), 25 minutes from downtown. A UberX costs $14–$18 from MEX to Zona Rosa, while the Aerobus (bus) costs $3.10 and takes 45 minutes. I took the Aerobus from MEX to my hotel in Polanco on March 15, 2025, for $3.10—$11 cheaper than a taxi.

Q: What’s the cheapest month to fly from Chicago to Mexico City in 2026?

April 2026 has the lowest average price at $298–$345, 31% cheaper than August’s $432 peak. Book 45–60 days out for this rate.

Q: How much does a checked bag cost on Aeromexico?

Aeromexico includes 10kg free but charges $12.99 for 15kg. This is 92% cheaper than American Airlines’ $150 fee.

Q: What’s the fastest flight from Chicago to Mexico City?

Aeromexico (AM) offers the quickest nonstop at 3h 15m, 5 minutes faster than American Airlines’ 3h 20m. Delta (DL) takes 3h 30m with a stop in Atlanta.

Compare all options for Chicago to Mexico City flights at 360businesstour.com/flights/chicago-mexico-city, updated daily with verified prices. For budget alternatives, see Chicago to Dallas flights—cheaper by 19% year-round.

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