SEA - ONT Price | C$ 177 - C$ 398 |
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ONT Temperature | 12 - 26 °C |
ONT Rainfall | 3 - 86 mm |
Popular in | July | High demand for flights, 32% potential price rise |
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Cheapest in | January | Best time to find cheap flights, 35% potential price drop |
Round-trip from | C$ 237 | From Seattle/Tacoma Intl to Ontario |
One-way from | C$ 231 | One-way flight from Seattle/Tacoma Intl to Ontario |
Tuesday flights are generally found to be more expensive for flights from Seattle to Ontario. This shouldn’t discourage you from searching, as you can still find great deals by being flexible with your options. Use our search form to find deals on tickets to Ontario.
To save on the cost of your flight from Seattle to Ontario, book at least 61 days before your planned departure. Booking around this time can save you about 97% on the cost of this flight compared to booking a flight leaving this week. We have found prices from C$ 497 if you need a flight within two weeks. For flights within the next 72 hours, you can find tickets from as low as C$ 715.
January can be a great time to fly to Ontario from Seattle with a flight ticket averaging about C$ 384. Cheapflights users have found deals in the month of January for as cheap as C$ 182. The most expensive prices can be found in the month of June.
One of the essential ways to save on airfare from Seattle to Ontario is to remain as flexible as possible. Flights that are at noon tend to be the most expensive. A flight in the afternoon could potentially save you up to 45% on airfare.
Seattle/Tacoma Intl
Ontario
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10h 09mOntario
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14h 04mFrontier
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2h 34mOntario
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2h 51mAlaska Airlines
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2h 34mOntario
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2h 45mAlaska Airlines
Seattle/Tacoma Intl
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10h 09mOntario
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14h 04mFrontier
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2h 34mOntario
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2h 51mAlaska Airlines
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2h 34mOntario
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2h 45mAlaska Airlines
Seattle/Tacoma Intl
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2h 34mOntario
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2h 51mAlaska Airlines
Seattle/Tacoma Intl
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2h 34mOntario
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2h 45mAlaska Airlines
Seattle/Tacoma Intl
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2h 34mOntario
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2h 51mAlaska Airlines
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6h 35mOntario
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7h 09mDelta
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2h 49mOntario
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2h 54mDelta
Seattle/Tacoma Intl
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6h 26mOntario
Seattle/Tacoma Intl
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2h 54mDelta
Seattle/Tacoma Intl
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2h 34mOntario
Seattle/Tacoma Intl
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2h 51mAlaska Airlines
Seattle/Tacoma Intl
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2h 34mOntario
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2h 45mAlaska Airlines
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2h 34mOntario
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2h 51mAlaska Airlines
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2h 38mOntario
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2h 56mDelta
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4h 59mOntario
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2h 56mDelta
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2h 49mOntario
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2h 56mDelta
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2h 34mAlaska Airlines
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2h 35mDelta
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2h 35mAlaska Airlines
To fly from Seattle to Ontario, you need to book a flight from Seattle/Tacoma Intl (SEA) to Ontario (ONT). Nonstop flights to Ontario from Seattle/Tacoma Intl take 2h 35m on average. When it comes time to book airfare, you have a few options: there are 9 outbound flights from Seattle/Tacoma Intl to Ontario offered by 3 different airlines.
Some of the carriers operating flights from Seattle/Tacoma Intl to Ontario that may be offering flexible cancellation policies are Alaska Airlines, Delta, and Endeavor Airlines. Our site will let you filter for all airlines offering greater flexibility due to COVID-19.
Yes, there are multiple flights from Seattle to Ontario for under C$ 300. The cheapest flight booked recently is on Frontier for just C$ 210, but on average you can expect to pay C$ 269.
Cheapflights has 20 direct flights from Seattle to Ontario under C$ 300. A good price for a direct flight from Seattle to Ontario is less than C$ 301.
There are currently 20+ open flights from Seattle to Ontario within the next 7 days for less than C$ 500.
Within the past month, 33 users have taken a look at flights from Seattle/Tacoma Intl to Ontario.
Cheapflights users have booked flights from Seattle to Ontario round-trip from C$ 210. Other airlines that can offer you cheap pricing are Alaska Airlines, from C$ 211, and United Airlines, from C$ 312. Frontier is currently priced 41% below the average price you’ll pay for this route.
C$ 106 is the cheapest one-way deal found within the past few days, from Alaska Airlines. You may also be able to find cheap deals on Delta and United Airlines, with prices starting from C$ 119 and C$ 231, respectively.
Consider Endeavor Airlines, Alaska Airlines or Delta when booking your flight. These represent the most popular airlines when flying from Seattle to Ontario.
Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from Seattle to Ontario on time: KLM (81%), Delta (79%), Alaska Airlines (78%).
Looking for the cheapest flight from Seattle to Ontario? While on average our users pay C$ 856, our data indicates the cheapest price to be C$ 264. The most popular route (Seattle/Tacoma Intl - Ontario), is priced around C$ 238.
10%of flight departures | Early morningMidnight to 6 am |
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15%of flight departures | Morning6 am to noon |
49%of flight departures | AfternoonNoon to 6 pm |
26%of flight departures | Evening6 pm to midnight |
Sunday | 12daily flights |
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Monday | 9daily flights |
Tuesday | 10daily flights |
Wednesday | 8daily flights |
Thursday | 12daily flights |
Friday | 12daily flights |
Saturday | 3daily flights |