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SEA to MER: distance & flight time
Seattle (Seattle Tacoma International Airport) → Merced (Castle Airport)
701 mi
1,129 km · 609 nm
1h 59m
estimated nonstop flight time
Same time
time difference · heading south
See live SEA→MER fares Phone-only fares on this route — call free
Flight time details
701 miles nonstop takes roughly 1h 59m gate to gate, flying south. 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
- SEA — Seattle Tacoma International Airport · Seattle, United States
- MER — Castle Airport · Merced, 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 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
Near MER
- MCE · Merced Regional Macready Field7 mi away
- MOD · Modesto City Co-Harry Sham Field27 mi away
- RMY · Mariposa Yosemite Airport30 mi away
- MAE · Madera Municipal Airport37 mi away
Frequently asked questions
How far is SEA from MER?
The flight distance from Seattle (SEA) to Merced (MER) is 701 miles (1,129 km, 609 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from SEA to MER?
A nonstop flight takes about 1h 59m 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 SEA to MER?
Nonstop service on SEA–MER 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 1h 59m nonstop estimate.
What is the cheapest way to fly from SEA to MER?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on SEA–MER that never appear on search engines, with no booking fees.
Why are some SEA to MER fares phone-only?
Consolidator contracts let us sell certain SEA–MER 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.