Flights operate between Ontario (ONT) and SeaTac (SEA).
1 airline operates this route with 4-9 flights daily flights.
Average flight time is 2h 40m - 3h 07m.
Route distance is 962 miles (1548 km).
Route Distance
962 miles (1548 km)
Average Duration
2h 40m - 3h 07m
Airlines Operating This Route
Frontier Airlines
Flight Frequency
Daily Flights
4-9 flights
Weekly Flights
52
Typical Departure Time Ranges
Earliest Departure
18:01
Latest Departure
18:01
Route Intelligence Dashboard
Overall Connectivity Score
35
ModerateRoute Diversity
1
Direct Routes
Frontier Airlines serves 1 destination from ONT
Weekly Frequency
7
Weekly Flights
Trend: Stable
Top 1 Most Frequent Routes - Details
| Route | Weekly Flights | Duration | Distance | Reliability |
|---|---|---|---|---|
| ONT → SeaTac (SEA) (SEA) | 7/week | 2h 40m - 3h 07m | 962 km | Seasonal |
Flight Schedule & Filters
Frontier Airlines flights from Ontario (ONT) to SeaTac (SEA)
Frontier Airlines operates scheduled nonstop flights between Ontario (ONT) and SeaTac (SEA). Frontier Airlines operates 4-9 flights daily flights on this route.• Flight Duration: 2h 40m - 3h 07m (average flight time)• Distance: 962 miles (1548 km) (air miles between airports)• Daily Flights: 4-9 flights (scheduled departures per day)
Ontario (ONT)
US
SeaTac (SEA)
US
FLIGHT TIME
2h 40m - 3h 07m
FLIGHT DISTANCE
962 miles (1548 km)
2h 57m - 2h 57m
18:01
18:01
962 miles (1548 km)
April
1 (Show)
52
Frontier Airlines Terminal Information & Contact
Departure Terminal - Ontario (ONT)
Terminal: 2
Phone: 47 67 59 30 00
Location: 2, Ontario, US
Arrival Terminal - SeaTac (SEA)
Terminal: 1
Phone: 1 866-807-7258
Location: 1, Seattle, US
Frontier Airlines Flight Schedule from Ontario (ONT) to SeaTac (SEA)
| Flight | Airline | Departure | Arrival | Aircraft |
|---|---|---|---|---|
F92275 |  Frontier Airlines | 18:01 | 20:58:00 | Airbus A321 |
Frontier Airlines Monthly Flight Calendar
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Frontier Airlines Terminal Information
Departure Terminal at Ontario (ONT):
Terminal 2:
• Frontier Airlines Terminal Phone: 47 67 59 30 00
Arrival Terminal at SeaTac (SEA):
Terminal 1:
• Frontier Airlines Terminal Phone: 1 866-807-7258
Frontier Airlines Contact Information and Customer Services
Frontier Airlines Address
4545 Airport Way
Denver, Colorado 80239, United States
Official Website
flyfrontier.comFrequently Asked Questions
How many Frontier Airlines flights operate from Ontario (ONT) to Seattle (SEA)?
Frontier Airlines operates 1 flight from Ontario (ONT) to Seattle (SEA).
What city does Seattle (SEA) airport serve?
Seattle (SEA) airport serves SeaTac, US.
How long is the Frontier Airlines flight from Ontario (ONT) to Seattle (SEA)?
The flight duration is approximately 2h 40m - 3h 07m.
What is the distance from Ontario (ONT) to Seattle (SEA)?
The distance is 962 miles (1548 km).
What aircraft does Frontier Airlines use on this route?
Frontier Airlines uses Airbus A321 on this route.
Which other airlines operate on this route?
2 other airlines operate on this route: Alaska Airlines, Delta Air Lines.
Which terminal does Frontier Airlines use at Ontario (ONT)?
Frontier Airlines flights from Ontario (ONT) depart from Terminal 2. Terminal 2 phone: 47 67 59 30 00.
View all Frontier Airlines flights to Ontario (ONT) →
Popular Frontier Airlines routes from Ontario include multiple destinations.
Route data verified regularly by Triposia Travel Research Team.