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HAF to SEA: distance & flight time
Half Moon Bay (Half Moon Bay Airport) → Seattle (Seattle Tacoma International Airport)
687 mi
1,105 km · 597 nm
1h 58m
estimated nonstop flight time
—
time difference · heading north
See live HAF→SEA fares Phone-only fares on this route — call free
Flight time details
687 miles nonstop takes roughly 1h 58m gate to gate, flying north. 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
- HAF — Half Moon Bay Airport · Half Moon Bay, 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 HAF
- SFO · San Francisco International Airport10 mi away
- SQL · San Carlos Airport14 mi away
- OAK · Metropolitan Oakland International Airport21 mi away
- PAO · Palo Alto Airport of Santa Clara County21 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 HAF from SEA?
The flight distance from Half Moon Bay (HAF) to Seattle (SEA) is 687 miles (1,105 km, 597 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from HAF to SEA?
A nonstop flight takes about 1h 58m 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 cheapest way to fly from HAF to SEA?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on HAF–SEA that never appear on search engines, with no booking fees.