Cheap flight from Seattle to Ontario from AED 441
We've found these cheap flights for you. You can book one-way or round-trip flight tickets.
Swipe up to view more
>
>
>
>
>
Flights from Seattle to Ontario
Cheap flight deals from Seattle to Ontario
We've found these cheap flights for you. You can book one-way or round-trip flight tickets.
-
Round-trip
-
One way
-
-
Cheapest nonstop
SEA 13:422h 54mNonstopONT 16:36Seattle - Ontario | Fri, Jul 18 | Frontier Airlines
SIN 10:032h 50mNonstopSEA 12:53Ontario - Seattle | Mon, Jul 21 | Frontier AirlinesAED 441 AED 65333% OFF33% OFFAED 653 AED 441 -
SEA 13:502h 40mNonstopONT 16:30Seattle - Ontario | Sat, Jun 28 | Frontier Airlines
SIN 10:032h 46mNonstopSEA 12:49Ontario - Seattle | Mon, Jun 30 | Frontier AirlinesAED 469 AED 65328% OFF28% OFFAED 653 AED 469
-
SEA 13:422h 54mNonstopONT 16:36Seattle - Ontario | Sat, Aug 16 | Frontier Airlines
SIN 21:402h 56mNonstopSEA 00:36Ontario - Seattle | Sat, Aug 23 | Frontier AirlinesAED 478 AED 65327% OFF27% OFFAED 653 AED 478
-
SEA 13:502h 40mNonstopONT 16:30Seattle - Ontario | Thu, Jul 3 | Frontier Airlines
SIN 08:332h 51mNonstopSEA 11:24Ontario - Seattle | Sat, Jul 5 | Frontier AirlinesAED 50523% OFFAED 653 AED 505
-
SEA 13:422h 54mNonstopONT 16:36Seattle - Ontario | Thu, Aug 14 | Frontier Airlines
SIN 08:332h 51mNonstopSEA 11:24Ontario - Seattle | Sat, Aug 16 | Frontier AirlinesAED 51621% OFFAED 653 AED 516
-
SEA 13:502h 40mNonstopONT 16:30Seattle - Ontario | Tue, Jul 1 | Frontier Airlines
SIN 08:332h 51mNonstopSEA 11:24Ontario - Seattle | Sat, Jul 5 | Frontier AirlinesAED 51721% OFFAED 653 AED 517
-
SEA 13:502h 40mNonstopONT 16:30Seattle - Ontario | Fri, Jun 20 | Frontier Airlines
SIN 10:032h 46mNonstopSEA 12:49Ontario - Seattle | Sat, Jun 21 | Frontier AirlinesAED 52020% OFFAED 653 AED 520
-
SEA 13:422h 54mNonstopONT 16:36Seattle - Ontario | Fri, Aug 1 | Frontier Airlines
SIN 10:032h 50mNonstopSEA 12:53Ontario - Seattle | Sat, Aug 2 | Frontier AirlinesAED 52220% OFFAED 653 AED 522
-
SEA 13:422h 54mNonstopONT 16:36Seattle - Ontario | Fri, Aug 8 | Frontier Airlines
SIN 08:332h 51mNonstopSEA 11:24Ontario - Seattle | Mon, Aug 11 | Frontier AirlinesAED 52320% OFFAED 653 AED 523
-
SEA 15:115h 40m1 stopsONT 20:51Seattle - Ontario | Fri, Jul 4 | Frontier Airlines
SIN 08:332h 51mNonstopSEA 11:24Ontario - Seattle | Sat, Jul 12 | Frontier AirlinesAED 51122% OFFAED 653 AED 511
-
SEA 13:0017h 25m1 stopsONT Invalid DateSeattle - Ontario | Fri, Jun 20 | Normal Airline
ONT 15:006hNonstopSEA 16:00Ontario - Seattle | Sun, Jun 22 | Normal AirlineFind More FlightsFind More Flights
-
Cheapest nonstop
SEA 13:502h 40mNonstopONT 16:30Seattle - Ontario | Tue, Jun 24 | Frontier AirlinesAED 134 AED 32157% OFF57% OFFAED 321 AED 134
-
SEA 13:422h 54mNonstopONT 16:36Seattle - Ontario | Tue, Jul 15 | Frontier AirlinesAED 190 AED 32141% OFF41% OFFAED 321 AED 190
-
SEA 13:502h 40mNonstopONT 16:30Seattle - Ontario | Wed, Jul 2 | Frontier AirlinesAED 210 AED 32135% OFF35% OFFAED 321 AED 210
-
SEA 13:422h 54mNonstopONT 16:36Seattle - Ontario | Sat, Aug 9 | Frontier AirlinesAED 21832% OFFAED 321 AED 218
-
SEA 13:422h 54mNonstopONT 16:36Seattle - Ontario | Wed, Jul 30 | Frontier AirlinesAED 22331% OFFAED 321 AED 223
-
SEA 13:422h 54mNonstopONT 16:36Seattle - Ontario | Fri, Jul 11 | Frontier AirlinesAED 25520% OFFAED 321 AED 255
-
SEA 13:422h 54mNonstopONT 16:36Seattle - Ontario | Wed, Jul 9 | Frontier AirlinesAED 25620% OFFAED 321 AED 256
-
SEA 13:422h 54mNonstopONT 16:36Seattle - Ontario | Thu, Jul 10 | Frontier AirlinesAED 25620% OFFAED 321 AED 256
-
SEA 13:422h 54mNonstopONT 16:36Seattle - Ontario | Fri, Jul 25 | Frontier AirlinesAED 25620% OFFAED 321 AED 256
-
SEA 13:422h 54mNonstopONT 16:36Seattle - Ontario | Fri, Aug 15 | Frontier AirlinesAED 25720% OFFAED 321 AED 257
-
SEA 13:0017h 25m1 stopsONT Invalid DateSeattle - Ontario | Fri, Jun 20 | Normal AirlineFind More FlightsFind More Flights
-
Crossed out prices are calculated based on the average price of the corresponding route on Trip.com.
Flight Info | Seattle to Ontario
| Cheapest one-way flight price | AED 133 |
|---|---|
| Cheapest return ticket price | AED 440 |
| Off-season for travel | April |
| Peak season for travel | September |
| Flight distance | 1,538.43 km |
| Popular airline | Alaska Airlines |
When is the cheapest time to fly from Seattle to Ontario?
We monitor flight fares to help you find the best deals effortlessly
Cheapest flights
From price
Search
Displayed prices are calculated based on the cheapest average weekly prices of the corresponding route on Trip.com.
Frequently Asked Questions
-
When are flight tickets from Seattle (SEA) to Ontario (ONT) the cheapest?
Airlines adjust prices for flights from Seattle to Ontario based on the date and time of your booking. By analyzing data from all airlines, on Trip.com, you can find the lowest flight prices on Tuesdays, Wednesdays, and Saturdays. -
How much do flights from Seattle (SEA) to Ontario (ONT) cost?
According to Trip.com's data, the lowest price is around AED 682.
How to find a cheap flight from Seattle to Ontario
Wait until the last minute and flight costs are often sky-high. Plan ahead, book the right way, and your savings can soar. We have loads of saving tips to help you find a cheap flight from Seattle to Ontario. Book your flights at the right time and save more.
Being flexible with your dates to get the cheapest Seattle to Ontario ticket.
Tap "Date" on flight search bar to scan through the calender for Seattle to Ontario airfare over next 6 months in 2025. If you would like to fly in next 3 months, it seems the cheapest date is on Tue, Jun 24 at AED 134 for one-way flights.
Compare cheap Seattle to Ontario flight deals from over hundreds of airlines.
Our extensive search allows you to compare prices from over 500 airlines to choose the cheapest flight tickets from Seattle to Ontario. The cheapest airline operating is Frontier Airlines.
Set up a Price Alert
By setting up a Price Alert for your Seattle to Ontario route, you can easily track the price of your airline tickets from without manually checking every day.
Don't miss cheap Seattle to Ontario flight deals and promo codes.
You can always get the latest deals through Trip.com Deals and Promo Codes for cheap flights. If registering a free membership, you can receive more deals for your flights.
Book early or wait unitl the last minute.
It's always better to book early. Flight tickets tend to be the cheapest when they are first released, normally about a year before the departure date. So, check online as soon as the flights you want become available. If you miss the cheapest time, you can still find lower-priced tickets as the flight date approaches.
Search for flights on the go.
To get the best flight booking experience on the go, download Trip.com and search for cheap flight tickets from Seattle to Ontario to get exclusive deals for you.
More Travel Options
-
Top Routes from Seattle
-
Top Routes to Ontario
-
Trending Airlines
- Best offers Seattle to Toronto flights
- Cheap flights from Seattle to Minneapolis
- Flights from Seattle to Chicago
- Best offers Seattle to Austin flights
- Best offers Seattle to Anchorage flights
- Cheap flights from Seattle to Dubai
- Flights from Seattle to Indianapolis
- Flights from Seattle to San Francisco
- Cheap flights from Seattle to Victoria
- Flights from Seattle to Juneau
- Flights from Asturias to Ontario
- Best offers Yancheng to Ontario flights
- Cheap flights from Lianyungang to Ontario
- Cheap flights from Matamoros to Ontario
- Cheap flights from Ponta Delgada to Ontario
- Cheap flights from Menorca to Ontario
- Best offers Hannover to Ontario flights
- Flights from Quzhou to Ontario
- Flights from Xining to Ontario
- Flights from Tours to Ontario