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ALO to SEA: distance & flight time
Waterloo (Waterloo Regional Airport) → Seattle (Seattle Tacoma International Airport)
1,490 mi
2,398 km · 1,295 nm
3h 42m
estimated nonstop flight time
-2h
time difference · heading northwest
See live ALO→SEA fares Phone-only fares on this route — call free
Flight time details
1,490 miles nonstop takes roughly 3h 42m gate to gate, flying northwest. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 2-hour time set-back when reading arrival times on your ticket.
The two airports
- ALO — Waterloo Regional Airport · Waterloo, United States
- SEA — Seattle Tacoma International Airport · Seattle, 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 ALO
- CCY · Northeast Iowa Regional Airport37 mi away
- CID · The Eastern Iowa Airport58 mi away
- MCW · Mason City Municipal Airport63 mi away
- PCD · Prairie Du Chien Municipal Airport72 mi away
Near SEA
- RNT · Renton Municipal Airport5 mi away
- BFI · Boeing Field King County International Airport6 mi away
- TIW · Tacoma Narrows Airport18 mi away
- PWT · Bremerton National Airport21 mi away
Frequently asked questions
How far is ALO from SEA?
The flight distance from Waterloo (ALO) to Seattle (SEA) is 1,490 miles (2,398 km, 1,295 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from ALO to SEA?
A nonstop flight takes about 3h 42m 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 Waterloo and Seattle?
Seattle is 2 hours behind Waterloo.
What is the cheapest way to fly from ALO to SEA?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on ALO–SEA that never appear on search engines, with no booking fees.