$63 Cheap Flights from Seattle to Ontario

Feel at ease with free flight cancellations within 24 hours of booking

Change your flight without a fee on select flights

Find The Best Dates To Fly from Seattle - Tacoma Intl. to Los Angeles - Ontario Intl.

Amazing SEA to ONT Flight Deals

The cheapest flights to Los Angeles - Ontario Intl. found within the past 7 days were $122 round trip and $63 one way. Prices and availability subject to change. Additional terms may apply.

Flight Schedule for SEA to ONT

CarrierFlightDepart SEAArrive ONTSun
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AS53708:26 am11:00 amCheck FareCheck FareCheck FareCheck FareCheck FareCheck FareCheck Fare
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Best Los Angeles - Ontario Intl. Flight and Hotel Packages

Los Angeles - Ontario Intl. flight + hotel packages - economy flights

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FAQs about flights from Seattle - Tacoma Intl. Airport (SEA) to Los Angeles - Ontario Intl. Airport (ONT)

Can I catch a flight from Seattle, WA Airport (SEA-Seattle - Tacoma Intl.) to Ontario, CA Airport (ONT-Los Angeles - Ontario Intl.) right now?

It's wise to find out about any travel advice reports and quarantine requirements in place in your destination. Ensure you go to our Covid-19 Travel Advisor for up-to-date information on flying to Ontario, CA Airport (ONT-Los Angeles - Ontario Intl.) from Seattle, WA Airport (SEA-Seattle - Tacoma Intl.).

Are there direct flights from Seattle, WA Airport (SEA-Seattle - Tacoma Intl.) to ONT?

Alaska Airlines and Delta are a couple of the airlines that operate nonstop flights from SEA to Ontario, CA Airport (ONT-Los Angeles - Ontario Intl.). If you're eager to get to where you're headed the speediest way possible, these might be just the ticket.

If I am not able to travel due to COVID-19, can I change my booking to a later date?

For more info about changing your flight to Ontario, CA Airport (ONT-Los Angeles - Ontario Intl.), please visit our Customer Service Portal.

How long is the flight from Sea-Tac Airport to Ontario Airport?

The flight from Seattle to Los Angeles is a quick 2 hours and 37 minutes on average. With such a short travel time, you won't need to worry if you forget to bring a phone charger in your carry-on bag.

What is the flight distance from Sea-Tac Airport to ONT?

There's a flight distance of 963 mi separating Seattle, WA Airport (SEA-Seattle - Tacoma Intl.) and Ontario Airport. This is classified as a medium-haul flight. You'll have plenty of time to get engrossed in the in-flight entertainment and fit in a snooze if you're feeling weary.

What airlines fly from Seattle, WA Airport (SEA-Seattle - Tacoma Intl.) to Ontario Airport?

You'll find several airlines with direct flights between Seattle and Los Angeles. Alaska Airlines (AS) is one of the most liked. This carrier offers 75 flights each month. Another option is Delta (DL), which offers 121 flights every month. The more airlines you look into, the more likely you are to pick up a sensational deal.

What airlines have practices regarding COVID-19 in place and use social distancing?

From the moment you enter the departure terminal to when you leave the arrivals terminal, if you're flying with Southwest Airlines, American Airlines or Delta you can be sure that COVID-19 measures and social distancing rules have been adhered to. Many airlines have introduced capped capacity flights and keeping the middle seat empty.

What is the best day to buy a plane ticket?

This just in! Airfares offered on Thursdays tend to be the cheapest, according to flight demand on Travelocity in 2020. Wednesday and Friday prices are also good, but you may want to prepare your budget if booking on a Sunday, as data shows the end of the week is when prices are generally at their highest.

What are the cheapest days to fly?

Frequent travelers may already know this, but earlier in the week can be the cheapest time to fly. In 2020, flights departing on a Monday were generally the cheapest of the week, whereas you may pay a premium for weekend flights when demand is usually high. On average, tickets were most expensive for Saturday departures, so if you need to fly out on a weekend, you might look for deals ahead of time.

How far in advance can you book a flight?

Trying to figure out how early you should book your flight? It's possible to start comparing international airfares on Travelocity up to 12 months in advance. However, it does depend on the carrier as not all airlines release their prices that far out. According to our 2020 flight demand trends, last minute planners can still bag a bargain with some of the cheapest fares appearing 2 weeks to 2 months prior to their travel dates.

How can I save money on airline tickets?

We'll let you in on a secret...You can save big on flights if you mix and match your airlines and fare types. In fact, travelers who booked flights on Travelocity in 2020 saved nearly 40% when their return flights consisted of two different airlines or fare types.

*According to flight demand on Travelocity.com from January to December 2020. Savings are subject to change based on departure location, date and destination.

 

Traveling From Seattle - Tacoma Intl.
Traveling To Los Angeles - Ontario Intl.
Shortest Flight Time 2 hours 32 mins
Earliest Departure Time 7:39AM PST
Latest Departure Time 7:40PM PST
Lowest Flight Price $122

Route Info

Flight path for flights from Seattle-Tacoma International Airport to LA/Ontario International Airport.

Distance:
962.00 miles

Airline carriers and aircraft used on flights from SEA to ONT

Airline Carrier
Aircraft
Alaska Airlines
Canadair Regional Jet
Alaska Airlines
Canadair Regional Jet 700

Discover our best flights from Seattle SEA to Ontario ONT. 

With 15 airlines to choose from on Travelocity, you can easily find the best option for you. Use our filters to sort by price, compare airlines, and find the most convenient flight times. 

 

Find our best return flights from Seattle SEA to Ontario ONT at the right price  

Airfares to Ontario ONT from Seattle SEA currently cost between $122 and $132. It’s usually cheaper to book a round trip than two separate one-way flights. Prices and availability subject to change. Additional terms may apply. 

 

Book one-way flights from Seattle SEA to Ontario ONT 

If you want to be flexible about when you return, or keep your travel options open ended, a one-way flight could be just the ticket! You’ll find one-way airfares from Seattle SEA to Ontario ONT on Travelocity starting at $63. Prices and availability subject to change. Additional terms may apply. 

 

Get to Ontario ONT from Seattle SEA quicker with direct flights. 

Get to Ontario faster, without the hassle of changing planes and moving baggage, by booking a direct flight. Expect your direct flight to ONT from SEA to take around 2 hour(s) 32 min(s).  

 

Find our cheapest airfares for flights from Seattle SEA to Ontario ONT

Find cheap flight deals by using our search filters to sort results starting with the lowest price airfares to ONT from SEA. Our Price Match Promise means if you find a lower rate on Travelocity.com or on another US-based website within 24 hours of booking, we’ll credit or refund the difference.  

 

Get our best airfare deals for your flight from Seattle SEA to Ontario ONT today 

If you’re flexible about when you travel, February is usually the cheapest month to fly from Seattle SEA to Ontario ONT. If you need to be more specific, search by date and arrival and departure times.Then, compare prices across different airlines, and sort results by lowest price first. 

 

Book flexible airline tickets for flights to Ontario ONT from Seattle SEA 

Some airlines let you change your travel dates without charging a fee. Use our ‘no change fee’ filter to see which flights to ONT from SEA have this option.  

 

Travel with confidence when you book flights to Ontario ONT from Seattle SEA with Travelocity 

We’ve secured fantastic deals with all the main airline carriers and it’s easy to compare, choose, and book with Travelocity. With 24/7 customer service and our free 'App', we’ll always keep you moving. 

*Price based on the lowest price found within past 24 hours and based upon one night stay for two adults over the next thirty days. Prices and availability subject to change. Additional terms may apply.