$69 Frontier Airlines Cheap Flights from Seattle to Ontario

Find The Best Day To Fly from Seattle to Ontario

Amazing Frontier Airlines SEA to ONT Flight Deals

The cheapest flights to Los Angeles - Ontario Intl. found within the past 7 days were $123 round trip and $69 one way. Prices and availability subject to change. Additional terms may apply.

ONT From SEA Economy Coach Packages on Similar Airlines

TownePlace Suites by Marriott Ontario Chino Hills
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Discover our best Frontier Airlines flight from Seattle SEA to Ontario ONT 

To find the best deals on flights to Seattle from Ontario with Frontier Airlines, just enter your travel dates, filter by Frontier Airlines, and hit search. You’ll find flights to choose from and can sort by price, flight duration, and arrival or departure time.  

 

Return flights from Seattle SEA to Ontario ONT with Frontier Airlines 

If you’re planning a round trip, booking return flights with Frontier Airlines is usually the most cost-effective option. With airfares ranging from $123 to $149, it’s easy to find a flight that suits your budget. Prices and availability subject to change. Additional terms may apply. 

 

Book one-way Frontier Airlines flights from Seattle SEA to Ontario ONT 

A one-way ticket gives you much greater flexibility—allowing you to choose your return date, destination, and time whenever you’re ready. By booking in advance you can find great deals on one-way tickets too. Right now, a one-way Frontier Airlines flight from Seattle to Ontario costs from $69. Prices and availability subject to change. Additional terms may apply. 

 

The easy way to find cheap flights to Ontario ONT from  Seattle SEA with Frontier Airlines 

To find a cheap Frontier Airlines flight from Seattle SEA to Ontario ONT, sort your search results by price or filter by budget. Thanks to Travelocity’s Price Match Promise, if you find a better airfare deal anywhere else within 24 hours, we’ll credit or refund the difference. 

 

How to find our best airfare deals on Frontier Airlines flights from Seattle SEA to Ontario ONT 

If you’re looking for cheap flights, it helps to be flexible when it comes to your travel dates. You’ll usually find lower cost tickets when you travel during quieter months such as February, or if you book a flight with a stopover. 

 

Find nonstop flights from Seattle SEA to Ontario ONT with Frontier Airlines 

If you’re keen to be on Ontario soil fast, don’t waste time with a stopover—filter your search results to show direct Frontier Airlines flights only. The journey takes around hour(s) min(s) – so you’ll be there before you know it. 

 

Flexible airline tickets for Frontier Airlines flights from Seattle SEA to Ontario ONT 

Make sure you’re not out of pocket if plans change by choosing a flexible ticket with penalty-free amendment and cancellation options. Use our ‘no change fee’ filter to see which flights have this option.  

 

There are a lot of reasons to book your flights to Ontario ONT from  Seattle SEA with Frontier Airlines on Travelocity 

At Travelocity our vast and up-to-the-minute inventory puts all of our best flight deals in one place. So, whether you’re traveling on business or jetting off with friends and family, you can trust Travelocity to get you there.

Frontier Airlines Airports
Hop on a(n) Frontier Airlines flight today by flying to many destinations out of these domestic and international airports:
Airport Code
Country
Airport Name
Number of Flights
DENUSADenver Intl.13
MCOUSAOrlando Intl.7
CUNMEXCancun Intl.6
GDLMEXDon Miguel Hidalgo y Costilla Intl.5
PHLUSAPhiladelphia Intl.2
ORDUSAO'Hare Intl.2
MIAUSAMiami Intl.1
LASUSAMcCarran Intl.1
MEXMEXMexico City Intl.1
LAXUSALos Angeles Intl.1

Travelers ❤️ these 🏨 after their flight to Ontario

SureStay Hotel by Best Western Ontario Airport
SureStay Hotel by Best Western Ontario Airport
2.5 out of 5
3201 East Centrelake Drive, Ontario, CA
The price is $99 per night from Jan 30 to Jan 31
An outdoor pool, free self parking, and free newspapers are featured at this hotel. Guests will appreciate perks like free WiFi and a free airport shuttle. A ...
3.8/5 Good! (12 reviews)
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SureStay Hotel by Best Western Ontario Airport
Holiday Inn Ontario Airport, an IHG Hotel
Holiday Inn Ontario Airport, an IHG Hotel
3 out of 5
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The price is $110 per night from Jan 30 to Jan 31
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4/5 Very Good! (26 reviews)
"Room was fantastic."

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Holiday Inn Ontario Airport, an IHG Hotel
DoubleTree by Hilton Ontario Airport
DoubleTree by Hilton Ontario Airport
4 out of 5
222 N Vineyard Ave, Ontario, CA
The price is $141 per night from Feb 3 to Feb 4
This smoke-free hotel features a nightclub and 2 restaurants. Traveling on business? Take advantage of the 13 conference rooms, 24-hour business center, and ...
3.7/5 Good! (26 reviews)
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DoubleTree by Hilton Ontario Airport
Lowest nightly price found within the past 24 hours based on a 1 night stay for 2 adults. Prices and availability subject to change. Additional terms may apply.
*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.