Cheap flight from Seattle to Ontario from QAR 438
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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.
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Round-trip
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One way
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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 AirlinesQAR 438 QAR 55321% OFF21% OFFQAR 553 QAR 438 -
SEA 13:502h 40mNonstopONT 16:30Seattle - Ontario | Sat, Jun 28 | Frontier Airlines
SIN 10:032h 46mNonstopSEA 12:49Ontario - Seattle | Mon, Jun 30 | Frontier AirlinesQAR 466 QAR 55316% OFF16% OFFQAR 553 QAR 466
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SEA 13:422h 54mNonstopONT 16:36Seattle - Ontario | Sat, Aug 16 | Frontier Airlines
SIN 21:402h 56mNonstopSEA 00:36Ontario - Seattle | Sat, Aug 23 | Frontier AirlinesQAR 476 QAR 55314% OFF14% OFFQAR 553 QAR 476
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SEA 13:502h 40mNonstopONT 16:30Seattle - Ontario | Thu, Jul 3 | Frontier Airlines
SIN 08:332h 51mNonstopSEA 11:24Ontario - Seattle | Sat, Jul 5 | Frontier AirlinesQAR 5029% OFFQAR 553 QAR 502
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SEA 13:422h 54mNonstopONT 16:36Seattle - Ontario | Mon, Aug 18 | Frontier Airlines
SIN 19:222h 43mNonstopSEA 22:05Ontario - Seattle | Fri, Aug 22 | Hawaiian AirlinesQAR 5088% OFFQAR 553 QAR 508
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SEA 13:422h 54mNonstopONT 16:36Seattle - Ontario | Thu, Aug 14 | Frontier Airlines
SIN 08:332h 51mNonstopSEA 11:24Ontario - Seattle | Sat, Aug 16 | Frontier AirlinesQAR 5137% OFFQAR 553 QAR 513
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SEA 13:502h 40mNonstopONT 16:30Seattle - Ontario | Tue, Jul 1 | Frontier Airlines
SIN 08:332h 51mNonstopSEA 11:24Ontario - Seattle | Sat, Jul 5 | Frontier AirlinesQAR 5147% OFFQAR 553 QAR 514
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SEA 13:422h 54mNonstopONT 16:36Seattle - Ontario | Fri, Aug 1 | Frontier Airlines
SIN 10:032h 50mNonstopSEA 12:53Ontario - Seattle | Sat, Aug 2 | Frontier AirlinesQAR 5196% OFFQAR 553 QAR 519
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SEA 13:422h 54mNonstopONT 16:36Seattle - Ontario | Fri, Aug 8 | Frontier Airlines
SIN 08:332h 51mNonstopSEA 11:24Ontario - Seattle | Mon, Aug 11 | Frontier AirlinesQAR 5206% OFFQAR 553 QAR 520
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SEA 15:115h 40m1 stopsONT 20:51Seattle - Ontario | Fri, Jul 4 | Frontier Airlines
SIN 08:332h 51mNonstopSEA 11:24Ontario - Seattle | Sat, Jul 12 | Frontier AirlinesQAR 5088% OFFQAR 553 QAR 508
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SEA 13:0017h 25m1 stopsONT Invalid DateSeattle - Ontario | Thu, Jun 26 | Normal Airline
ONT 15:006hNonstopSEA 16:00Ontario - Seattle | Sat, Jun 28 | Normal AirlineFind More FlightsFind More Flights
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Cheapest nonstop
SEA 13:502h 40mNonstopONT 16:30Seattle - Ontario | Tue, Jun 24 | Frontier AirlinesQAR 134 QAR 27151% OFF51% OFFQAR 271 QAR 134
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SEA 13:502h 40mNonstopONT 16:30Seattle - Ontario | Wed, Jul 2 | Frontier AirlinesQAR 209 QAR 27123% OFF23% OFFQAR 271 QAR 209
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SEA 13:422h 54mNonstopONT 16:36Seattle - Ontario | Sat, Aug 9 | Frontier AirlinesQAR 216 QAR 27120% OFF20% OFFQAR 271 QAR 216
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SEA 13:422h 54mNonstopONT 16:36Seattle - Ontario | Wed, Jul 30 | Frontier AirlinesQAR 22218% OFFQAR 271 QAR 222
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SEA 13:422h 54mNonstopONT 16:36Seattle - Ontario | Tue, Jul 15 | Frontier AirlinesQAR 22716% OFFQAR 271 QAR 227
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SEA 13:422h 54mNonstopONT 16:36Seattle - Ontario | Fri, Jul 11 | Frontier AirlinesQAR 2547% OFFQAR 271 QAR 254
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SEA 13:422h 54mNonstopONT 16:36Seattle - Ontario | Wed, Jul 9 | Frontier AirlinesQAR 2546% OFFQAR 271 QAR 254
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SEA 13:422h 54mNonstopONT 16:36Seattle - Ontario | Fri, Jul 25 | Frontier AirlinesQAR 2546% OFFQAR 271 QAR 254
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SEA 20:422h 40mNonstopONT 23:22Seattle - Ontario | Tue, Aug 19 | Frontier AirlinesQAR 2556% OFFQAR 271 QAR 255
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SEA 13:422h 54mNonstopONT 16:36Seattle - Ontario | Fri, Aug 15 | Frontier AirlinesQAR 2556% OFFQAR 271 QAR 255
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SEA 13:0017h 25m1 stopsONT Invalid DateSeattle - Ontario | Thu, Jun 26 | Normal AirlineFind More FlightsFind More Flights
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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 | QAR 133 |
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| Cheapest round-trip ticket price | QAR 437 |
| Off-season for travel | April |
| Peak season for travel | September |
| Flight distance | 1,538.43 km |
When is the cheapest time to fly from Seattle to Ontario?
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Displayed prices are calculated based on the cheapest average weekly prices of the corresponding route on Trip.com.
Frequently Asked Questions
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When are flight tickets from Seattle (SEA) to Ontario (ONT) the cheapest?
Airlines adjust prices for flights from Seattle to Ontario based on the departure date and time of your selection. By analyzing data from all airlines, we've discovered that 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 QAR 678.
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.
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