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PAO to ALN: distance & flight time
Palo Alto (Palo Alto Airport of Santa Clara County) → Alton/St Louis (St Louis Regional Airport)
1,736 mi
2,793 km · 1,508 nm
3h 52m
estimated nonstop flight time
—
time difference · heading east
See live PAO→ALN fares Phone-only fares on this route — call free
Flight time details
1,736 miles nonstop takes roughly 3h 52m gate to gate, flying east. 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
- PAO — Palo Alto Airport of Santa Clara County · Palo Alto, 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 PAO
- SFO · San Francisco International Airport18 mi away
- NUQ · Moffett Federal Airfield5 mi away
- SQL · San Carlos Airport8 mi away
- SJC · Norman Y. Mineta San Jose International Airport12 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 PAO from ALN?
The flight distance from Palo Alto (PAO) to Alton/St Louis (ALN) is 1,736 miles (2,793 km, 1,508 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from PAO to ALN?
A nonstop flight takes about 3h 52m 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 PAO to ALN?
Nonstop service on PAO–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 3h 52m nonstop estimate.
What is the cheapest way to fly from PAO to ALN?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on PAO–ALN that never appear on search engines, with no booking fees.
Why are some PAO to ALN fares phone-only?
Consolidator contracts let us sell certain PAO–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.