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ALS to IAD: distance & flight time
Alamosa (San Luis Valley Regional Bergman Field) → Washington (Washington Dulles International Airport)
1,540 mi
2,479 km · 1,338 nm
3h 29m
estimated nonstop flight time
+2h
time difference · heading east
See live ALS→IAD fares Phone-only fares on this route — call free
Flight time details
1,540 miles nonstop takes roughly 3h 29m gate to gate, flying east. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 2-hour time gain when reading arrival times on your ticket.
The two airports
- ALS — San Luis Valley Regional Bergman Field · Alamosa, United States
- IAD — Washington Dulles International Airport · Washington, 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 ALS
- TSM · Taos Regional Airport68 mi away
- RTN · Raton Municipal-Crews Field89 mi away
- PUB · Pueblo Memorial Airport95 mi away
- GUC · Gunnison Crested Butte Regional Airport96 mi away
Frequently asked questions
How far is ALS from IAD?
The flight distance from Alamosa (ALS) to Washington (IAD) is 1,540 miles (2,479 km, 1,338 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from ALS to IAD?
A nonstop flight takes about 3h 29m gate to gate. Actual time varies with winds, routing and season — eastbound transatlantic flights, for example, are usually faster than the return.
What is the time difference between Alamosa and Washington?
Washington is 2 hours ahead of Alamosa.
What is the cheapest way to fly from ALS to IAD?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on ALS–IAD that never appear on search engines, with no booking fees.