Q: Can I fly back to Seattle/Tacoma Intl from Ontario?

Returning to Seattle/Tacoma Intl from Ontario COVID-19 testing requirements Visitors from Ontario are not required to present a negative COVID-19 PCR test or antigen result upon entering Seattle/Tacoma Intl. Quarantine requirements Visitors from Ontario are not required to quarantine after entering Seattle/Tacoma Intl.

Question 1

How popular is this Seattle to Ontario flight route?

Accepted Answer

Within the past month, 33 users have taken a look at flights from Seattle/Tacoma Intl to Ontario.

Question 2

What are the cheapest airlines flying from Seattle to Ontario round-trip?

Accepted Answer

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.

Question 3

What are the cheapest airlines to fly from Seattle to Ontario one-way?

Accepted Answer

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.

Question 4

Can I fly to Ontario from Seattle/Tacoma Intl right now?

Accepted Answer

Information is based on travel restrictions for travel to Ontario within the United States

Most visitors from Seattle/Tacoma Intl need to provide a negative COVID-19 test result and/or quarantine to enter Ontario.

COVID-19 testing requirements
Visitors from Seattle/Tacoma Intl are not required to present a negative COVID-19 PCR test or antigen result upon entering Ontario.

Quarantine requirements
Visitors from Seattle/Tacoma Intl are not required to quarantine after entering Ontario.

Documents
Passenger Disclosure and Attestation - To be filled out by travelers from the People’s Republic of China and designated airports including Incheon International Airport (ICN) in Seoul, the Republic of Korea; Toronto Pearson International Airport (YYZ) in Canada; and Vancouver International Airport (YVR) in Canada.

Question 5

Can I fly back to Seattle/Tacoma Intl from Ontario?

Accepted Answer

Returning to Seattle/Tacoma Intl from Ontario

COVID-19 testing requirements
Visitors from Ontario are not required to present a negative COVID-19 PCR test or antigen result upon entering Seattle/Tacoma Intl.

Quarantine requirements
Visitors from Ontario are not required to quarantine after entering Seattle/Tacoma Intl.

Question 6

What are the most popular airlines that fly from Seattle to Ontario?

Accepted Answer

Consider Endeavor Airlines, Alaska Airlines or Delta when booking your flight. These represent the most popular airlines when flying from Seattle to Ontario.

Question 7

What are the cheapest flights from Seattle to Ontario?

Accepted Answer

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.

Question 8

What are the most reliable airlines from Seattle to Ontario?

Accepted Answer

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%).

Question 9

Can I find flights from Seattle to Ontario for under C$ 300 on Cheapflights?

Accepted Answer

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.

Question 10

Are there direct flights from Seattle to Ontario for under C$ 300 on Cheapflights?

Accepted Answer

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.

Question 11

Are there last-minute flights available from Seattle to Ontario for under C$ 500?

Accepted Answer

There are currently 20+ open flights from Seattle to Ontario within the next 7 days for less than C$ 500.

Question 12

Which airlines flying from Seattle/Tacoma Intl to Ontario have flexible cancellations due to COVID-19?

Accepted Answer

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.

Question 13

What is the cheapest day to fly round-trip from Seattle to Ontario?

Accepted Answer

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.

Question 14

How far in advance should I book a flight from Seattle to Ontario?

Accepted Answer

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.

Question 15

What is the cheapest month to fly from Seattle to Ontario?

Accepted Answer

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.

Question 16

When is the cheapest time to fly from Seattle to Ontario (SEA - ONT)?

Accepted Answer

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.

Question 17

What airports do I use to fly from Seattle to Ontario?

Accepted Answer

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.

Popular in	July	High demand for flights, 32% potential price rise
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

10%of flight departures	Early morningMidnight to 6 am
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
Monday	9daily flights
Tuesday	10daily flights
Wednesday	8daily flights
Thursday	12daily flights
Friday	12daily flights
Saturday	3daily flights

Cheap flights from Seattle to Ontario

How to find the cheapest flight from Seattle (SEA) to Ontario (ONT)

All the information you need to plan the best SEA to ONT flight in 2023: compare Seattle to Ontario flight prices with the expected peak season, weather and rainfall in Ontario.

What is the cheapest day to fly round-trip from Seattle to Ontario?

How far in advance should I book a flight from Seattle to Ontario?

What is the cheapest month to fly from Seattle to Ontario?

When is the cheapest time to fly from Seattle to Ontario (SEA - ONT)?