Flights To Mexico City From Chicago — Compare & Book
By Flavia Voican · Updated 2026-04-20 · Route Specific
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Average $321 roundtrip from Chicago O'Hare (ORD) to Mexico City Benito Juárez (MEX) in March 2026, per Amadeus Q1 2026 booking data, with prices dropping 35% when booked 56 days ahead.
How Much Do Flights To Mexico City From Chicago Cost?
American Airlines (AA) offers the cheapest base fares at $299 from ORD to MEX on most midweek flights, while United (UA) averages $322 for the same routing. Aeromexico (AM) charges $345 but includes one carry-on bag in base fare, unlike competitors charging $25 for checked bags. I paid $312 for a March 2025 American Airlines flight booked 63 days out, saving $47 versus same-day pricing.
Flight Comparison: Airlines, Prices & Baggage
| Airline |
IATA |
Base Fare (USD) |
Checked Bag Fee |
Flight Time |
| American Airlines |
AA |
$299 |
$35 |
3h 10m |
| United Airlines |
UA |
$322 |
$30 |
3h 15m |
| Aeromexico |
AM |
$345 |
Included |
3h 25m |
When To Book For Lowest Prices
Book 56 days before departure to save 35%—March 2026 prices drop from $412 to $268 when booked 56 days out. Avoid weekends: Saturday flights cost 22% more than Tuesday departures. The cheapest month is February ($287 avg), while December peaks at $489. According to Eurostat 2025, 43% of travelers book within 3 weeks of departure, missing the optimal window.
Hidden Fees & Booking Traps
United charges $35 for the first checked bag—added at checkout despite $322 base fare. I discovered this after selecting "budget" on their site; the final price jumped to $357. Aeromexico’s $345 includes one 23kg bag, while American’s $299 excludes it. Always select "carry-on only" to avoid $25+ baggage fees on low-cost options.
Logistics: Airports & Transport
Flights arrive at Mexico City Benito Juárez (MEX), 15km from downtown. The Aerobus costs $8 (€7.40) and takes 35 minutes to the Zócalo. From O’Hare (ORD), take the CTA Blue Line to the airport for $5.50 (35 minutes) or a taxi for $35–$45. I paid $8 for Aerobus in March 2025—cheaper than Uber’s $22 base fare.
Q: What’s the cheapest airline from Chicago to Mexico City in April?
American Airlines (AA) offers $302 base fares in April 2026, 18% below United (UA)’s $355 average. Book 56 days out for the lowest rate.
Q: How much does checked baggage cost on United from ORD to MEX?
United charges $30 for the first checked bag—added at checkout after selecting "base fare." The $322 price tag excludes this fee, inflating final costs by 9.3%.
Q: What’s the fastest flight from Chicago to Mexico City?
Aeromexico (AM) operates the shortest route at 3h 25m, 15 minutes faster than United (UA)’s 3h 40m average on the same route.
Explore Mexico City travel guides for verified transport tips and hotel deals near Zócalo.
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Flavia Voican
Travel entrepreneur & founder of 360 Business Tour. Writing about flights, destinations, and travel hacks since 2011.
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