Good to know - Cheap tickets Ontario — Seattle
| Cheapest flight found | $36 |
|---|---|
| Minimal flight time | 2h 23m |
| Flight distance | 1557 km |
| Most popular airline | Delta Air Lines |
Airfare Ontario – Seattle by month
Here you can find out in what months how much a ticket Ontario – Seattle costs to buy cheap plane tickets.
| Month | One-way | Round-trip |
|---|---|---|
| June 2026 | ||
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Remember that the optimal time for booking air tickets is 59 days before the departure date, this is the average time at which air tickets were sold at the lowest prices.
Schedule of direct flights Ontario — Seattle
| Departure | Arrival | Flight days | Flight | Airlines | Flight time | Airports | |
|---|---|---|---|---|---|---|---|
| 01:50 | 04:13 | tue, wed, thu | 5X984 | UPS | 2h 23m | Ontario International Airport — Boeing Field International Airport | Select dates |
| 01:50 | 04:23 | wed, thu, fri | 5X984 | UPS | 2h 33m | Ontario International Airport — Boeing Field International Airport | Select dates |
| 06:00 | 08:42 | daily | AS1091 | Alaska Airlines | 2h 42m | Ontario International Airport — Seattle-Tacoma International Airport | Select dates |
| 06:00 | 08:48 | daily | DL4042 | Delta Air Lines | 2h 48m | Ontario International Airport — Seattle-Tacoma International Airport | Select dates |
| 06:00 | 08:45 | daily | AS1091 | Alaska Airlines | 2h 45m | Ontario International Airport — Seattle-Tacoma International Airport | Select dates |
| 06:00 | 08:48 | sat | AS1091 | Alaska Airlines | 2h 48m | Ontario International Airport — Seattle-Tacoma International Airport | Select dates |
| 06:25 | 09:13 | daily | DL4042 | Delta Air Lines | 2h 48m | Ontario International Airport — Seattle-Tacoma International Airport | Select dates |
| 08:13 | 11:11 | mon, thu, fri, sun | F93164 | Frontier (Rocky the Saw-Whet Owl Livery) | 2h 58m | Ontario International Airport — Seattle-Tacoma International Airport | Select dates |
| 09:40 | 12:25 | mon, thu, fri, sun | F93164 | Frontier (Rocky the Saw-Whet Owl Livery) | 2h 45m | Ontario International Airport — Seattle-Tacoma International Airport | Select dates |
| 11:25 | 14:19 | daily | DL3593 | Delta Air Lines | 2h 54m | Ontario International Airport — Seattle-Tacoma International Airport | Select dates |
Popular airlines flying Ontario — Seattle
Flight Ontario – Seattle is served by 18 airlines. 5 airlines operate direct flights.
Airlines with direct flights
Other airlines flying with transfers
Sales of tickets from Ontario to Seattle in the last 48 hours
Dynamics airfare Ontario — Seattle by month for the last year
according to LowCost.Club for the last year
The airfare depends on the departure date. Our chart shows the low season prices on route Ontario — Seattle
The graph shows that booking flights Ontario — Seattle is best planned for June and flights Ontario — Seattle — Ontario in the month of June.
Flights Ontario — Seattle
The selection of cheap flights Ontario — Seattle
Here you can find and purchase the cheapest flights Ontario — Seattle from $36 and Ontario — Seattle — Ontario from $25.
The price of the flight Ontario — Seattle (United States) — Ontario from $25 (round-trip).
The average price of the flight Ontario — Seattle (United States) — Ontario $246 (round-trip).
- Departure city: Ontario
- IATA code of the city of origin: ONT
- Departure airports: Ontario International Airport, International Heliport
- Departure country: United States
- Destination city: Seattle
- IATA code of the destination city: SEA
- Destination airports: Boeing Field International Airport, Kenmore Air Harbor SPB, Seattle-Tacoma International Airport
- Destination country: United States
Low cost flights Ontario — Seattle (ONT — SEA)
The distance between Ontario and Seattle 967 miles (or 1557 kilometres).
The time difference between Ontario and Seattle is 0 h.
Minimal flight time from Ontario to Seattle 2h 23m.
LowCostClub always do a comparison of airfares Ontario — Seattle with several airlines (include UPS, Alaska Airlines, Delta Air Lines). They will always give you all available options so you can find the cheapest flight to Seattle. In addition, you can choose the platform where you want to place your orders. There are also special offers for air tickets Ontario — Seattle. Last week, for instance, the cheapest round-trip prices stood at $25 while the cheapest one-way price that was available within the last week cost $36
Routes from nearby cities to Seattle
A flight from a neighbouring city can help you save money on plane tickets.
The most frequent flight to Seattle is from Los Angeles. The cheapest airfare can be purchased with a flight from Las Vegas from $20. The nearest airports from Ontario with a flight to Seattle are in Monterey.
Popular International routes from Ontario
Popular routes from Seattle
If you are going to fly from Seattle, then study the popular flights. The most popular flights from Seattle:
Popular domestic routes from Ontario
FAQ about Ontario — Seattle
Are there any direct flights Ontario — Seattle?
Yes, they do: 5X984, AS1091, DL4042, F93164, DL3593, AS1111, DL1566, AS9801, 5X2836, DL3589, AS1242, AS1119, F92275, DL4031, AS1087
Can we fly from Ontario to Seattle?
Yes, you can fly from Ontario to Seattle. Ontario has 2 airports (Ontario International Airport, International Heliport) for flights. UPS, Alaska Airlines, Delta Air Lines, Frontier (Rocky the Saw-Whet Owl Livery), AlphaSky depart from Ontario on mon, tue, wed, thu, fri, sat, sun. There are non-direct flights through ABX Air, Advanced Air, Air Transport International, Allegiant Air, American Airlines, Ameriflight, Atlas Air, China Airlines Cargo, Empire Airlines, FedEx, JetBlue, NetJets, One Air, SkyWest Airlines, Southwest Airlines, Starlux, United Airlines, Volaris.
How long does it take to fly from Ontario to Seattle?
A direct flight lasts an average of 2h 23m, during which time the aircraft covers a distance of 1557 km.
How much do flights Ontario — Seattle cost?
The price of flights Ontario — Seattle starts from $36.
What days does the plane fly Ontario — Seattle?
Planes fly Ontario — Seattle 7 times a week on the following days: mon, tue, wed, thu, fri, sat, sun
What airports are there in Ontario and Seattle?
In Ontario — Ontario International Airport, International Heliport. In Seattle — Boeing Field International Airport, Kenmore Air Harbor SPB, Seattle-Tacoma International Airport.
What flights are currently flying from Ontario to Seattle?
The following flights fly between Ontario and Seattle: 5X984, 5X984, AS1091, DL4042, AS1091, AS1091, DL4042, F93164, F93164, DL3593, AS1111, AS1111, DL1566, AS9801, AS1111, 5X2836, DL3589, AS1242, AS1242, AS1242, AS1119, AS1119, AS1119, F92275, F92275, DL4031, DL4031, AS1087, AS1087, AS1087, AS1087
What month is the cheapest to fly from Ontario to Seattle?
High season is considered to be July and the cheapest month is June. Enter your preferred airports (or cities) and dates into the search form above to unlock the latest Ontario — Seattle flight deals.
Which airlines direct fly from Ontario to Seattle?
The following airlines have direct flights Ontario — Seattle: UPS, Alaska Airlines, Delta Air Lines, Frontier (Rocky the Saw-Whet Owl Livery), AlphaSky.
Which airlines fly from Ontario to Seattle?
All the following airlines flights Ontario — Seattle: ABX Air, Advanced Air, Air Transport International, Alaska Airlines, Allegiant Air, AlphaSky, American Airlines, Ameriflight, Atlas Air, China Airlines Cargo, Delta Air Lines, Empire Airlines, FedEx, Frontier (Rocky the Saw-Whet Owl Livery), JetBlue, NetJets, One Air, SkyWest Airlines, Southwest Airlines, Starlux, United Airlines, UPS, Volaris.