Cheap flights Seattle — Ontario (SEA — ONT)

Good to know - Cheap tickets Seattle — Ontario

Cheapest flight found $31
Minimal flight time 2h 13m
Flight distance 1557 km
Most popular airline Alaska Airlines

Airfare Seattle – Ontario by month

Here you can find out in what months how much a ticket Seattle – Ontario costs to buy cheap plane tickets.

Month One-way Round-trip
October 2025
September 2025
August 2025
July 2025
June 2025
May 2025
April 2025
March 2025
February 2025
January 2025
December 2024
November 2024

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 Seattle — Ontario

Departure Arrival Flight days Flight Airlines Flight time Airports
05:45 07:58 tue 5X2983 UPS 2h 13m Boeing Field International Airport — Ontario International Airport Select dates
05:45 08:02 tue, wed, thu, fri 5X2983 UPS 2h 17m Boeing Field International Airport — Ontario International Airport Select dates
07:30 10:25 daily DL3593 Delta Air Lines 2h 55m Seattle-Tacoma International Airport — Ontario International Airport Select dates
08:27 11:05 mon, tue, wed, thu, fri, sun AS1254 Alaska Airlines 2h 38m Seattle-Tacoma International Airport — Ontario International Airport Select dates
10:43 13:34 fri DL3589 Delta Air Lines 2h 51m Seattle-Tacoma International Airport — Ontario International Airport Select dates
10:47 13:26 daily AS1278 Alaska Airlines 2h 39m Seattle-Tacoma International Airport — Ontario International Airport Select dates
10:47 13:27 mon, tue AS1278 Alaska Airlines 2h 40m Seattle-Tacoma International Airport — Ontario International Airport Select dates
12:00 14:46 daily AS1118 Alaska Airlines 2h 46m Seattle-Tacoma International Airport — Ontario International Airport Select dates
12:59 15:32 daily AS1097 Alaska Airlines 2h 33m Seattle-Tacoma International Airport — Ontario International Airport Select dates
13:18 15:50 daily AS1097 Alaska Airlines 2h 32m Seattle-Tacoma International Airport — Ontario International Airport Select dates
All routes

Sales of tickets from Seattle to Ontario in the last 48 hours

2025-07-27 one-way

Dynamics airfare Seattle — Ontario 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 Seattle — Ontario

The graph shows that booking flights Seattle — Ontario is best planned for August and flights Seattle — Ontario — Seattle in the month of December.

Flights Seattle — Ontario

The selection of cheap flights Seattle — Ontario

Here you can find and purchase the cheapest flights Seattle — Ontario from $31 and Seattle — Ontario — Seattle from $33.

The price of the flight Seattle — Ontario (United States) — Seattle from $33 (round-trip).

The average price of the flight Seattle — Ontario (United States) — Seattle $168 (round-trip).

Low cost flights Seattle — Ontario (SEA — ONT)

The distance between Seattle and Ontario 967 miles (or 1557 kilometres).

The time difference between Seattle and Ontario is 0 h.

Minimal flight time from Seattle to Ontario 2h 13m.

LowCostClub always do a comparison of airfares Seattle — Ontario with several airlines (include UPS, Delta Air Lines, Alaska Airlines). They will always give you all available options so you can find the cheapest flight to Ontario. In addition, you can choose the platform where you want to place your orders. There are also special offers for air tickets Seattle — Ontario. Last week, for instance, the cheapest round-trip prices stood at $33 while the cheapest one-way price that was available within the last week cost $31

Routes from nearby cities to Ontario

A flight from a neighbouring city can help you save money on plane tickets.

Most often, flights to Ontario are from Pasco. The cheapest plane ticket to Ontario can be bought from $32 with a departure from Portland, which is also the nearest city from Seattle.

Popular International routes from Seattle

Popular routes from Ontario

If you are going to fly from Ontario, then study the popular flights. The most popular flights from Ontario:

Popular domestic routes from Seattle

FAQ about Seattle — Ontario

Yes, they do: 5X2983, DL3593, AS1254, DL3589, AS1278, AS1118, AS1097, F93163, DL4031, AS1086, 5X9843, 5X983, DL4027, AS1040

Yes, you can fly from Seattle to Ontario. Seattle has 3 airports (Boeing Field International Airport, Kenmore Air Harbor SPB, Seattle-Tacoma International Airport) for flights. UPS, Delta Air Lines, Alaska Airlines, Frontier (Rivero the Puerto Rican Toad Livery) depart from Seattle on mon, tue, wed, thu, fri, sat, sun. There are non-direct flights through ABX Air, Advanced Air, Air Transport International, American Airlines, Ameriflight, Atlas Air, China Airlines, Empire Airlines, FedEx, Hawaiian Airlines, JetBlue, NetJets, Omni Air International, One Air, Southwest Airlines, Starlux, United Airlines, Volaris.

A direct flight lasts an average of 2h 13m, during which time the aircraft covers a distance of 1557 km.

The price of flights Seattle — Ontario starts from $31.

Planes fly Seattle — Ontario 7 times a week on the following days: mon, tue, wed, thu, fri, sat, sun

In Seattle — Boeing Field International Airport, Kenmore Air Harbor SPB, Seattle-Tacoma International Airport. In Ontario — Ontario International Airport, International Heliport.

The following flights fly between Seattle and Ontario: 5X2983, 5X2983, DL3593, AS1254, DL3589, AS1278, AS1278, AS1118, AS1097, AS1097, F93163, DL4031, AS1086, AS1086, 5X9843, 5X983, DL4027, AS1040

High season is considered to be July and the cheapest month is August. Enter your preferred airports (or cities) and dates into the search form above to unlock the latest Seattle — Ontario flight deals.

The following airlines have direct flights Seattle — Ontario: UPS, Delta Air Lines, Alaska Airlines, Frontier (Rivero the Puerto Rican Toad Livery).

All the following airlines flights Seattle — Ontario: ABX Air, Advanced Air, Air Transport International, Alaska Airlines, American Airlines, Ameriflight, Atlas Air, China Airlines, Delta Air Lines, Empire Airlines, FedEx, Frontier (Rivero the Puerto Rican Toad Livery), Hawaiian Airlines, JetBlue, NetJets, Omni Air International, One Air, Southwest Airlines, Starlux, United Airlines, UPS, Volaris.

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