international · 2h 20m · 1,270 km
Houston to Mexico City
2 airlines · 2 aircraft ranked
In economy, United's Economy (737-900ER) leads the field with a 4.2/10.In first class, United's United First (737-900ER) edges out the field with a 2.8/10.
Quick pick
Fly United. It has free Wi-Fi (paid on Aeromexico).
If prices are similar, go with this one.
Fly United. It has free Wi-Fi (paid on Aeromexico) and a bigger screen (13" vs 10").
If fares are comparable, this is the better cabin.
Select two airlines to compare head-to-head
Data verified June 2026
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Airlines on this route
Route insights
- In economy, United's Economy (737-900ER) leads the field with a 4.2/10.
- In first class, United's United First (737-900ER) edges out the field with a 2.8/10.
Frequently asked
Which is better in first: United or Aeromexico on IAH-MEX?
United First (United Airlines, 737-900ER) and Clase Premier (Aeromexico, 737-MAX8) score virtually the same in first: 2.8 vs 2.6/10. The biggest gap is wi-fi — Free Wi-Fi vs Paid Wi-Fi — but neither carrier pulls ahead overall.
Which is better in economy: United or Aeromexico on IAH-MEX?
Economy (United Airlines, 737-900ER) edges out Economy (Aeromexico, 737-MAX8) in economy, scoring 4.2/10 vs 3.6. The deciding factor: AC + USB-C vs USB-A only. Aeromexico fights back on legroom.
What are the best seats in United United First on IAH-MEX?
Best: Row 1 has the most legroom as a bulkhead. 1A and 1F offer the most privacy with the wall on one side. Row 2 is the sweet spot between legroom and storage (bulkhead rows lack under-seat storage). Avoid: Row 5 seats 5A/5B do not recline; 5E/5F have roughly half the recline of other First rows. This is the biggest seat trap on the 737-900ER. Signature Interior with Collins Aerospace Pinnacle seats, 13-inch HD seatback touchscreens with Bluetooth audio, USB-A and USB-C at every seat plus AC outlet. Complimentary meal service on flights over 800 miles; snack basket on shorter flights. ViaSat Ka-band WiFi free for MileagePlus members. Starlink awaiting FAA certification for 737-900ER, expected during 2026. Majority of fleet retrofitted to Signature Interior; some older aircraft remain.
What are the best seats in United Economy on IAH-MEX?
Best: Exit row 21 has 38.8 inches of pitch — more than First Class. The 2-seat side rows 20-21 are the best economy seats on the plane. Rows 7-14 are Economy Plus with 33-34-inch pitch. Avoid: Last row (row 33) has severely limited or no recline due to the rear lavatory wall. Rows 32-33 experience galley noise and lavatory traffic. Middle seats (B, E) in any row are the tightest at 30-inch pitch. Signature Interior with 10-inch HD seatback touchscreens and Bluetooth audio. USB-A and USB-C at every seat plus shared AC outlets. ViaSat Ka-band WiFi free for MileagePlus members. 42 Economy Plus seats in rows 7-14 have 33-34-inch pitch; 117 standard Economy seats have 30-inch pitch. Three sub-variants exist (39/42/45 Economy Plus seats); Version 2 with 42 E+ is most common (~84 of ~99 aircraft).
What are the best seats in Aeromexico Economy on IAH-MEX?
Best: Exit row seats for extra legroom. Avoid: Last row (30) has limited recline and is near lavatory. Middle seats (B, E) throughout. Standard 3-3 economy with 30-inch pitch. Seatback IFE screens with Bluetooth audio. USB-A charging available. Wifi for purchase. Buy-on-board food and beverage on shorter routes; complimentary snack/drink on some routes. Exit row seats on the 737 offer extra legroom but do not recline. The row immediately before the exit also has limited recline due to clearance requirements.