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CXO to ALN: distance & flight time
Conroe (Conroe-North Houston Regional Airport) → Alton/St Louis (St Louis Regional Airport)
664 mi
1,068 km · 577 nm
1h 55m
estimated nonstop flight time
—
time difference · heading northeast
See live CXO→ALN fares Phone-only fares on this route — call free
Flight time details
664 miles nonstop takes roughly 1h 55m gate to gate, flying northeast. Add 45–90 minutes per connection if there's no nonstop service. Both airports share the same local time, so schedules read exactly as flown.
The two airports
- CXO — Conroe-North Houston Regional Airport · Conroe, United States
- ALN — St Louis Regional Airport · Alton/St Louis, United States
Distances are great-circle ("as the crow flies") — the same basis airlines use for frequent-flyer miles.
Alternate airports can cut this fare
Flying from or into a nearby airport is the #1 trick our agents use to beat online prices. Call and we'll compare every combination on one call.
Near CXO
- IAH · George Bush Intercontinental Houston Airport26 mi away
- DWH · David Wayne Hooks Memorial Airport22 mi away
- HTV · Huntsville Regional Airport29 mi away
- IWS · West Houston Airport40 mi away
Near ALN
- STL · St Louis Lambert International Airport20 mi away
- BLV · Scott AFB/Midamerica Airport26 mi away
- SUS · Spirit of St Louis Airport36 mi away
- SPI · Abraham Lincoln Capital Airport69 mi away
Frequently asked questions
How far is CXO from ALN?
The flight distance from Conroe (CXO) to Alton/St Louis (ALN) is 664 miles (1,068 km, 577 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from CXO to ALN?
A nonstop flight takes about 1h 55m gate to gate. Actual time varies with winds, routing and season — eastbound transatlantic flights, for example, are usually faster than the return.
Are there nonstop flights from CXO to ALN?
Nonstop service on CXO–ALN depends on the season and the day of week. Run the fare search on this page with the nonstop filter applied to see current direct options; when there is no nonstop, a single connection through a carrier hub adds roughly 2–4 hours to the 1h 55m nonstop estimate.
What is the cheapest way to fly from CXO to ALN?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on CXO–ALN that never appear on search engines, with no booking fees.
Why are some CXO to ALN fares phone-only?
Consolidator contracts let us sell certain CXO–ALN tickets below the price airlines permit us to publish online, so those fares can only be quoted over the phone. Call the travel desk and an agent will check phone-only inventory for your dates.