Cheap flights from Washington to Ontario from $39
This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Washington to Ontario departing on 2/24. 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 and deals
Big names and deals
Search 100s of travel sites to compare prices.Filter for what you want
Filter for what you want
Free Wi-Fi? Stopover? Instantly customize your results.Trusted 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 Washington to Los Angeles
Cheap round-trip flights
Cheap one-way flights
Cheap last minute flights
Cheap direct flights
Cheap bus & train deals from Washington to Los Angeles
All round-trip flight deals from Washington to Los Angeles
Alaska Airlines flights from State of Washington to Ontario
Our best Alaska Airlines deals on State of Washington to Ontario flight tickets
Delta flights from State of Washington to Ontario
Our best Delta deals on State of Washington to Ontario flight tickets
See travel insights to Los Angeles from
How to get the cheapest flight ticket from State of Washington to 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 Ontario?
In general, September is the cheapest month to fly from State of Washington to Ontario. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $131. If you aren’t able to travel during the month of September, then book flights to Ontario from State of Washington during August instead. Flights to Ontario in August, while not as cheap as those in September, still average around $157.
What is the cheapest day to depart on your flight to Ontario?
The cheapest day to depart on your flight to Ontario is on a Tuesday when prices can be found for as low as $176. This is often the case because there is less demand to fly during this day of the week. When flying out on a Sunday, the most expensive travel day of the week, you can expect to see flight prices from State of Washington to Ontario for around $261.
What is the cheapest time of day to depart on your flight to Ontario?
At noon is the cheapest time of day to fly from State of Washington to Ontario when you can find flight prices for as low as $135. Flying to Ontario at noon is an ideal time because this is during off-peak travel hours. If you have a flexible travel schedule, then try to avoid flying in the morning when prices are $236 on average. Flights to Ontario from State of Washington in the morning are generally more expensive because this time of day is more convenient for travelers’ schedules.
What is the cheapest Washington to Ontario flight route?
Fly from Seattle/Tacoma Intl to Ontario for the best Washington - Ontario flight prices
How far in advance should I book a flight to Ontario?
You are more likely to see cheaper flights to Ontario from State of Washington when booking 11 weeks ahead of your departure date. In general, you can expect to find flights to Ontario for around $199 when searching 11 weeks out.However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Ontario from State of Washington for as low as $129 on momondo.
What cabin class options are available on Washington to Ontario flights?
There are 4 cabin classes available to choose from on Washington 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 Washington to Ontario?
Frontier, Delta, and Alaska Airlines are the most popular carriers operating from Washington to Ontario
What airlines fly to Ontario?
Alaska Airlines, Delta and Frontier are the top three most popular airlines that fly to Ontario from State of Washington according to our data. Alaska Airlines is the first choice among our users, with 55% of people opting to fly with this airline when traveling to Ontario. Keep in mind that there are 10 different airlines that fly to Ontario on a routine basis, so you have a few additional options to choose from.
How many flights depart from State of Washington to Ontario on average per day?
The number of flights available between State of Washington and Ontario is 14 per day as of January 2025. The most frequent departure time is 7:00PM, with 45% of daily flights leaving in the evening.
How many flights depart from State of Washington to Ontario on average per week?
As of January 2025, 104 flights take off from State of Washington and land in Ontario each week. The most common flight departure day for this route is Mon, with 20% of weekly flights taking off on this day.
Cheap State of Washington to Ontario flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from State of Washington to Ontario
When did momondo last update prices for flights from Washington to Ontario Airport?
Prices for flights from Washington to Ontario Airport are updated daily.
How many operators does momondo search for flights from Washington to Ontario Airport?
There are 6 operators available for flights from Washington to Ontario Airport as of January 2025.
How old do you have to be to fly from Washington to Ontario Airport?
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 Washington to Ontario Airport.
What documentation or ID do you need to fly to Ontario Airport?
The travel and health documents you'll need for your trip to Ontario Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Ontario Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.
What is the most popular plane model from State of Washington to Ontario?
momondo data reveals that the most frequently booked plane model on the route from State of Washington to Ontario is Airbus A320neo, representing 16.49% of all bookings. The subsequent popular models are Boeing 737-800 Passenger/BBJ2 (winglets) at 14.36%, Airbus A321neo at 11.50%, and Boeing 737 MAX 9 at 10.12%.
Best airlines flying from State of Washington to Ontario
Compare and see reviews for airlines that fly from State of Washington to Ontario with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom $40 | Free Cancellation | Rating 6.3 8,115 reviews | |||
| PriceFrom $55 | Free Cancellation | Rating 6.0 3,443 reviews | |||
| PriceFrom $117 | Free Cancellation | Rating 8.0 8,521 reviews | |||
| PriceFrom $130 | Free Cancellation | Rating 8.0 9,706 reviews | |||
| PriceFrom $281 | Free Cancellation | Rating 8.1 4,662 reviews | |||
| PriceFrom $288 | Free Cancellation | Rating 7.4 8,985 reviews |
Why use momondo?
Why should I use momondo to find a flight deal from Washington to Ontario?
Finding the right flight to Ontario from Washington is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Ontario quick and easy, saving you time and money.
Can I find flights from Washington to Ontario with flexible booking policies on momondo?
Yes. All flights to Ontario from Washington on momondo can be compared and filtered by various policies on offer, including flexible booking.
How can momondo help me find flights from Washington to Ontario?
momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Washington to Ontario.
I’m not ready to book a flight from Washington to Ontario right now. Can momondo alert me if prices change?
Of course. momondo tracks the price of Washington to Ontario flights. All you need is a valid email address and we will do the rest; it is that quick and easy.