Cheap flights from Seattle to Ontario from C$ 118
This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Seattle to Ontario departing on 3/3. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
Deals available from 900+ travel sites.
Big names, great deals
Big names, great deals
Search 100s of travel sites to compare prices.Filter for what you want
Filter for what you want
Free Wi-Fi? Early arrival? Instantly customize your resultsTrusted and free
Trusted and free
We’re completely free to use - no hidden charges or fees.Price Alerts
Price Alerts
Not ready to book? to track prices.Find the cheapest flights from Seattle to Ontario
Cheap round-trip flights
Cheap one-way flights
Cheap last-minute flights
Cheap direct flights
Cheap bus & train deals from Seattle to Ontario
All round-trip flight deals from Seattle to Ontario
WestJet flights from Seattle to Region of Ontario
Our best WestJet deals on Seattle to Region of Ontario flight tickets
Air Canada flights from Seattle to Region of Ontario
Our best Air Canada deals on Seattle to Region of Ontario flight tickets
See travel insights to Ontario from
How to get the cheapest flight ticket from Seattle to Region of Ontario
Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip
What is the cheapest month to fly to Region of Ontario?
In general, January is the cheapest month to fly from Seattle to Region of Ontario. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around C$ 462. If you are unable to visit Region of Ontario during the month of January, then departing from Seattle during the month September is also very affordable. Most momondo users find prices during this month for around C$ 587.
What is the cheapest day to depart on your flight to Region of Ontario?
The cheapest day to depart from Seattle to Region of Ontario is on a Sunday. Travellers who choose to depart for Region of Ontario on a Sunday will often find tickets for as low as C$ 858. The most expensive day to fly to Region of Ontario is Tuesday, with ticket prices averaging around C$ 1,328.
What is the cheapest time of day to depart on your flight to Region of Ontario?
Our most recent data shows that the best time of day to fly to Region of Ontario is in the afternoon. Flights from Seattle to Region of Ontario during this time can be as low as C$ 513. If you have a flexible travel schedule, then try to avoid flying in the morning when prices are C$ 1,231 on average. Flights to Region of Ontario from Seattle in the morning are generally more expensive because this time of day is more convenient for travellers’ schedules.
What is the cheapest Seattle/Tacoma Intl to Ontario flight route?
Fly from Seattle/Tacoma Intl to Toronto Pearson Intl for the best Seattle/Tacoma Intl - Ontario flight prices
How far in advance should I book a flight to Region of Ontario?
You are more likely to see cheaper flights to Region of Ontario from Seattle when booking 17 weeks ahead of your departure date. In general, you can expect to find flights to Region of Ontario for around C$ 716 when searching 17 weeks out.However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Region of Ontario from Seattle for as low as C$ 542 on momondo.
What cabin class options are available on Seattle/Tacoma Intl to Ontario flights?
There are 3 cabin classes available to choose from on Seattle/Tacoma Intl to Ontario flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.
What is the cheapest airline that flies from Seattle/Tacoma Intl to Ontario?
Alaska Airlines, WestJet, and Delta are the most popular carriers operating from Seattle/Tacoma Intl to Ontario
Which airlines fly to Region of Ontario?
Alaska Airlines, Air Canada and United Airlines are the top three most popular airlines that fly to Region of Ontario from Seattle according to our data. Alaska Airlines is the first choice among our users, with 46% of people opting to fly with this airline when travelling to Region of Ontario. Keep in mind that there are 3 different airlines that fly to Region of Ontario on a routine basis, so you have a few additional options to choose from.
How many flights depart from Seattle to Region of Ontario on average per day?
As of January 2025, there are 4 flights per day flying from Seattle to Region of Ontario. The most common time of day flights depart is 7:00a.m., with 100% of flights taking off at noon.
How many flights depart from Seattle to Region of Ontario on average per week?
The number of flights available between Seattle and Region of Ontario is 30 per week as of January 2025. The most frequent departure day is Wed, with 17% of weekly flights leaving on this day.
Cheap Seattle to Region of Ontario flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from Seattle to Region of Ontario
Best price found | C$ 118 |
|---|---|
Fastest flight time | 4h 37m |
Direct flights | Every day |
Airports in Region of Ontario | 5 airports |
When did momondo last update prices for flights from Seattle/Tacoma Intl Airport to Ontario?
Prices for flights from Seattle/Tacoma Intl Airport to Ontario are updated daily.
How many operators does momondo search for flights from Seattle/Tacoma Intl Airport to Ontario?
The number of operators available for flights from Seattle/Tacoma Intl Airport to Ontario is 3 as of January 2025.
How old do you have to be to fly from Seattle/Tacoma Intl Airport to Ontario?
The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Seattle/Tacoma Intl Airport to Ontario.
What documentation or ID do you need to fly to Ontario?
The travel and health documents required for your trip to Ontario can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Ontario. We always recommend checking with your airline or a trusted third party such as IATA to get advice.
What is the most popular plane model from Seattle to Region of Ontario?
Based on momondo bookings for this flight route, the most popular plane model on flight routes from Seattle to Region of Ontario is Airbus A220-300 (32.11% of total bookings). The next most popular plane models are Boeing 737 MAX 8 (20.00%), Airbus A320-100/200 (18.42%), and Boeing 737-900 Passenger/BBJ3 (winglets) (4.47%).
Best airlines flying from Seattle to Region of Ontario
Compare and see reviews for airlines that fly from Seattle to Region of Ontario with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom C$ 234 | Free Cancellation | Rating 7.0 8,635 reviews | |||
| PriceFrom C$ 384 | Free Cancellation | Rating 8.0 9,699 reviews | |||
| PriceFrom C$ 499 | Free Cancellation | Rating 7.4 8,971 reviews |
Why use momondo?
Why should I use momondo to find a flight deal from Seattle to Ontario?
It is quick and easy to find Seattle to Ontario flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Ontario that suits you.
Can I find flights from Seattle to Ontario with flexible booking policies on momondo?
Yes. All flights to Ontario from Seattle on momondo can be compared and filtered by various policies on offer, including flexible booking.
How can momondo help me find flights from Seattle to Ontario?
Once all potential Seattle to Ontario flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.
I’m not ready to book a flight from Seattle to Ontario right now. Can momondo alert me if prices change?
Yes. momondo can track prices for Seattle to Ontario flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.