Delta Air Lines flights from Ontario (ONT) to SeaTac (SEA)
Find comprehensive Delta Air Lines flight information, schedules, and booking details for direct flights from Ontario (ONT), US to SeaTac (SEA), US. Delta Air Lines 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 - 3h 4m
06:45
17:49
962 miles (1548 km)
April
1 (Show)
52
Terminal 1 (SEA)
Delta Air Lines Flight Schedule from Ontario (ONT) to SeaTac (SEA)
| Flight | Airline | Departure | Arrival | Aircraft |
|---|---|---|---|---|
DL4042 |  Delta Air Lines | 06:45 | 09:49:00 | Embraer 175 (Enhanced Winglets) |
DL4096 | Delta Air Lines | 11:48 | 14:45:00 | Embraer 175 (Enhanced Winglets) |
DL4031 | Delta Air Lines | 17:49 | 20:50:00 | Embraer 175 (Enhanced Winglets) |
Delta Air Lines Monthly Flight Calendar
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Route Insights
Duration variability: Flight duration on this route can vary based on aircraft type, wind conditions, and airline scheduling. Average duration is 2h 40m - 3h 07m.
Pricing patterns: April typically offers lower prices due to reduced demand outside peak travel seasons.
Best departure times: Peak departure times are 6:00, 11:00, 17:00, offering more flight options and potentially better connections.
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Delta Air Lines Policy Highlights
Baggage Policy
Standard baggage allowance varies depending on the class of travel. Additional charges may apply for excess baggage.
For detailed baggage policies, visit Delta Air Lines airline page or Delta Air Lines official website.
Check-in Information
Online check-in available 24 hours before departure.
Delta Air Lines Terminal Information
Departure Terminal at Ontario (ONT):
Arrival Terminal at SeaTac (SEA):
• Delta Air Lines flights to SeaTac (SEA) arrive at Terminal Terminal 1
• Terminal Terminal 1: Delta Air Lines operates from this terminal
Frequently Asked Questions about Delta Air Lines Flights
How many Delta Air Lines flights operate from Ontario (ONT) to Seattle (SEA)?
Delta Air Lines operates 3 flights from Ontario (ONT) to Seattle (SEA).
What city does Seattle (SEA) airport serve?
Seattle (SEA) airport serves SeaTac, US.
How long is the Delta Air Lines 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 Delta Air Lines use on this route?
Delta Air Lines uses Embraer 175 (Enhanced Winglets) on this route.
Which other airlines operate on this route?
2 other airlines operate on this route: Alaska Airlines, Frontier Airlines.
What are the earliest and latest Delta Air Lines flight departure times?
The earliest Delta Air Lines flight departs at 06:45 and the latest departs at 17:49.
Which terminal does Delta Air Lines use at Seattle (SEA)?
Delta Air Lines flights to Seattle (SEA) arrive at Terminal Terminal 1.
What is the cheapest month to fly Delta Air Lines from Ontario (ONT) to Seattle (SEA)?
April is typically the cheapest month to fly Delta Air Lines on this route.
What is the average price for a Delta Air Lines flight from Ontario (ONT) to Seattle (SEA)?
The average price for a round-trip Delta Air Lines flight on this route is approximately $249. Prices can vary based on booking time and demand.
How many Delta Air Lines flights operate per week on this route?
Delta Air Lines operates approximately 52 flights per week from Ontario (ONT) to Seattle (SEA).