$60 Cheap Flights from Ontario (ONT) to Seattle Paine Field Intl. Airport (PAE)

View $60 flight on Thu, Nov 13, 2025Opens in a new window

Popular airlines from Los Angeles - Ontario Intl. Airport (ONT) to Seattle Paine Field Intl. Airport (PAE)

Cheap Flights from Ontario to Seattle Paine Field Intl. Airport (ONT-PAE)

Prices were available within the past 7 days and start at $60 for one-way flights and $153 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Frontier Airlines
Fri, Dec 5 - Mon, Dec 15
ONT
Ontario
PAE
Seattle
$153 Roundtrip, found 6 hours ago
$153
Roundtrip
found 6 hours ago
Select Frontier Airlines flight, departing Fri, Dec 5 from Ontario to Seattle, returning Mon, Dec 15, priced at $153 found 6 hours ago
Frontier Airlines
Thu, Nov 6 - Thu, Nov 13
ONT
Ontario
PAE
Seattle
$160 Roundtrip, found 4 days ago
$160
Roundtrip
found 4 days ago
Select Frontier Airlines flight, departing Thu, Nov 6 from Ontario to Seattle, returning Thu, Nov 13, priced at $160 found 4 days ago
Frontier Airlines
Thu, Nov 13 - Mon, Nov 17
ONT
Ontario
PAE
Seattle
$170 Roundtrip, just found
$170
Roundtrip
just found
Select Frontier Airlines flight, departing Thu, Nov 13 from Ontario to Seattle, returning Mon, Nov 17, priced at $170 just found
Frontier Airlines
Sun, Dec 7 - Mon, Dec 15
ONT
Ontario
PAE
Seattle
$173 Roundtrip, found 6 hours ago
$173
Roundtrip
found 6 hours ago
Select Frontier Airlines flight, departing Sun, Dec 7 from Ontario to Seattle, returning Mon, Dec 15, priced at $173 found 6 hours ago
Frontier Airlines
Thu, Nov 13 - Sun, Nov 16
ONT
Ontario
PAE
Seattle
$179 Roundtrip, found 1 hour ago
$179
Roundtrip
found 1 hour ago
Select Frontier Airlines flight, departing Thu, Nov 13 from Ontario to Seattle, returning Sun, Nov 16, priced at $179 found 1 hour ago
Frontier Airlines
Fri, Dec 5 - Fri, Dec 12
ONT
Ontario
PAE
Seattle
$186 Roundtrip, found 6 hours ago
$186
Roundtrip
found 6 hours ago
Select Frontier Airlines flight, departing Fri, Dec 5 from Ontario to Seattle, returning Fri, Dec 12, priced at $186 found 6 hours ago
Frontier Airlines
Thu, Nov 13 - Mon, Nov 17
ONT
Ontario
PAE
Seattle
$190 Roundtrip, found 4 days ago
$190
Roundtrip
found 4 days ago
Select Frontier Airlines flight, departing Thu, Nov 13 from Ontario to Seattle, returning Mon, Nov 17, priced at $190 found 4 days ago
Frontier Airlines
Thu, Nov 6 - Fri, Nov 7
ONT
Ontario
PAE
Seattle
$193 Roundtrip, found 5 days ago
$193
Roundtrip
found 5 days ago
Select Frontier Airlines flight, departing Thu, Nov 6 from Ontario to Seattle, returning Fri, Nov 7, priced at $193 found 5 days ago
Frontier Airlines
Sun, Nov 9 - Thu, Nov 13
ONT
Ontario
PAE
Seattle
$199 Roundtrip, found 4 days ago
$199
Roundtrip
found 4 days ago
Select Frontier Airlines flight, departing Sun, Nov 9 from Ontario to Seattle, returning Thu, Nov 13, priced at $199 found 4 days ago
Frontier Airlines
Thu, Nov 13 - Mon, Nov 24
ONT
Ontario
PAE
Seattle
$200 Roundtrip, found 22 hours ago
$200
Roundtrip
found 22 hours ago
Select Frontier Airlines flight, departing Thu, Nov 13 from Ontario to Seattle, returning Mon, Nov 24, priced at $200 found 22 hours ago

Find the cheapest month to fly from Ontario (ONT) to Seattle (PAE)

October is typically the cheapest month to fly

From $162 - $1,092 per traveler.
Flights from Ontario (ONT) to Seattle Paine Field Intl. Airport (PAE)
Origin airport
Los Angeles - Ontario Intl.
Destination airport
Seattle Paine Field Intl. Airport
Airlines serving
Alaska Airlines, Frontier Airlines
Roundtrip price
$114
Distance
986 mi

Ontario to Seattle Paine Field Intl. Airport Flights

The cheapest times to fly from Ontario to Seattle Paine Field Intl. Airport

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Ontario to Seattle Paine Field Intl. Airport are during the month of December. You can find some of the cheapest flights from Ontario to Seattle Paine Field Intl. Airport with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Ontario to Seattle Paine Field Intl. Airport

Sunday is one of the best days to book for cheap flights from Ontario to Seattle Paine Field Intl. Airport: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Ontario to Seattle Paine Field Intl. Airport

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Ontario to Seattle Paine Field Intl. Airport in 2025. You can also book with separate airlines for your outbound and return journeys, from $60 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Ontario to Seattle Paine Field Intl. Airport flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Ontario to Seattle Paine Field Intl. Airport airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Frequently asked questions

How much does a flight from Los Angeles - Ontario Intl. Airport (ONT) to Snohomish County - Paine Field Airport (PAE) cost?
Get a cheap one-way flight from $60 or cheap return flight from $153 from Los Angeles - Ontario Intl. Airport (ONT) to Snohomish County - Paine Field Airport (PAE) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight deals on this route.
What is the cheapest month to fly from Los Angeles - Ontario Intl. Airport (ONT) to Snohomish County - Paine Field Airport (PAE)?
The cheapest month to fly from ONT to PAE is December, when demand is low. Off-peak season is often when you'll find lower airfares between these airports.
Which airlines fly direct from Los Angeles - Ontario Intl. Airport (ONT) to Snohomish County - Paine Field Airport (PAE)?
You can't catch a nonstop flight to Snohomish County - Paine Field Airport (PAE) from Ontario, CA (ONT-Los Angeles - Ontario Intl.). However, you can easily reach Seattle without any layovers by departing from Los Angeles Intl. Airport (LAX).
What is the cheapest airline that flies from Los Angeles - Ontario Intl. Airport (ONT) to Snohomish County - Paine Field Airport (PAE)?
To find the cheapest airline that'll fly you from ONT to PAE, use Expedia's filter tool. Customize your search based on your travel needs, such as preferred carriers and flight duration. You can then sort your results by "Price (lowest to highest)" to list the most affordable options first.
How many flights per day from Los Angeles - Ontario Intl. Airport (ONT) to Snohomish County - Paine Field Airport (PAE)?
Nonstop flights from Los Angeles - Ontario Intl. Airport (ONT) to Snohomish County - Paine Field Airport (PAE) aren't available daily, so you'll have to take a flight with a layover. Explore your options with our filter tool. Enter your dates and pick either "1 Stop" or "2+ Stops."
What day of the week has the most flights from ONT to PAE?
Friday is generally the busiest day for flights, while Tuesday is often the quietest.* Keep in mind that flight schedules can vary depending on various factors, including the time of year and carrier.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Los Angeles - Ontario Intl. Airport (ONT) to Snohomish County - Paine Field Airport (PAE)?
To avoid potential delays on the Los Angeles - Ontario Intl. Airport (ONT) to Snohomish County - Paine Field Airport (PAE) route, aim to fly before 3 PM. Later departures have a 22% higher chance of being canceled.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
What airports do you fly into for Seattle from Los Angeles - Ontario Intl. Airport (ONT)?
Seattle - Tacoma Intl. Airport (SEA) is the only airport in Seattle with direct flights from Los Angeles - Ontario Intl. Airport (ONT). Compare your options and discover affordable fares on Expedia.
Is it cheaper to buy a plane ticket from Los Angeles - Ontario Intl. Airport (ONT) to Snohomish County - Paine Field Airport (PAE) last-minute?
Last-minute fares from ONT to PAE are typically more expensive. To secure the cheapest rates, start looking for flights ahead of time. That said, if you're flexible with your travel plans, it's possible to land a cheap fare right before you leave.
Is it cheaper to book an ONT to PAE flight and hotel package?
Compared with arranging hotels and flights separately, booking an ONT to PAE flight and hotel package with Expedia could result in significant savings. Better yet, having everything in one easy place will take the stress out of travel planning. Just secure your flights and select from our extensive range of hotels, then tailor your trip with extras like tours, car rentals and activities.
Can I cancel or change the date of my flight from Los Angeles - Ontario Intl. Airport (ONT) to Snohomish County - Paine Field Airport (PAE)?
In most cases, you can cancel or modify your ONT to PAE flight. However, additional charges may apply, especially if you made your booking over 24 hours ago. Check your itinerary for the airline's fees and rules on flight changes, or if you'd like further details, head to our Customer Service portal.

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*Available to One Key members.