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SQL to SEA: distance & flight time
San Carlos (San Carlos Airport) → Seattle (Seattle Tacoma International Airport)
687 mi
1,105 km · 597 nm
1h 58m
estimated nonstop flight time
Same time
time difference · heading north
See live SQL→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
- SQL — San Carlos Airport · San Carlos, 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 SQL
- SFO · San Francisco International Airport10 mi away
- PAO · Palo Alto Airport of Santa Clara County8 mi away
- HWD · Hayward Executive Airport12 mi away
- NUQ · Moffett Federal Airfield13 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 SQL from SEA?
The flight distance from San Carlos (SQL) 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 SQL 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 SQL to SEA?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on SQL–SEA that never appear on search engines, with no booking fees.