$75 Cheap flight deals from Ontario (QLA) to SeaTac (SEA)
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This Weekend's Flight Deals from Ontario to SeaTac
This weekend's flight prices found within the past 7 days, for the period specified. Prices and availability are subject to change. Additional terms apply.
Airfares from $75 One Way, $139 Round Trip from Ontario to SeaTac
Prices starting at $139 for return flights and $75 for one-way flights to SeaTac were the cheapest prices found within the past 7 days, for the period specified. Prices and availability are subject to change. Additional terms apply.
SeaTac economy flight packages
Sleep Inn - SeaTac Airport
Mar 6 - Mar 9
Ontario (ONT) to Seattle (SEA)
Reviewed on Oct 11, 2025
1 Hotel Seattle
Feb 20 - Feb 23
Ontario (ONT) to Seattle (SEA)
Reviewed on May 27, 2025
The Belltown Inn
Mar 6 - Mar 9
Ontario (ONT) to Seattle (SEA)
Reviewed on Nov 1, 2025
SeaTac first class flight packages
Sleep Inn - SeaTac Airport
Feb 20 - Feb 22
Ontario (ONT) to Seattle (SEA)
Reviewed on Oct 11, 2025
The Belltown Inn
Feb 20 - Feb 22
Ontario (ONT) to Seattle (SEA)
Reviewed on Nov 1, 2025
Comfort Inn & Suites Sea-Tac Airport
Feb 20 - Feb 22
Ontario (ONT) to Seattle (SEA)
Reviewed on Nov 9, 2025
More About Flying To SeaTac from Ontario
Route Information for Flights from Ontario to SeaTac
Origin Airport IATA Code | QLA |
|---|---|
Destination Airport IATA Code | SEA |
Distance | |
Direct Flight Airlines | |
Earliest Flight Arrival | |
Latest Flight Arrival |
Ontario to SeaTac
Orbitz is the best place to find guaranteed low prices on Ontario to SeaTac flights. Because of our cutting-edge mobile tools and low fares on domestic and international flights, Orbitz is the best starting point for travelers.
Find Cheap Ontario to SeaTac Flights
Orbitz offers free mobile apps for iPhone and Android devices—a great way to find fantastic deals on flights from Ontario to SeaTac. Not only that, but you can check the status of your flight or even book low cost hotel rooms with the apps or on m.orbitz.com.
Get Miles and Points for Your Flight
Simply enter your frequent flyer information while booking to get miles or points for qualifying Ontario to SeaTac flights. This information can all be saved in your Orbitz account, which means it will not have to be entered each time you take advantage of a great air fare deal.
Flight Alerts Take Away the Stress
Orbitz does not want travelers to worry on their flights from Ontario to SeaTac. We keep you updated on any flight changes for Ontario to SeaTac flights with alerts sent directly to your email or a mobile device. These alerts can also be sent to friends and family.
Discount Travel Planning Made Simple
You will have no problems finding budget flights from Ontario to SeaTac on Orbitz.com. If your travel plans are flexible, you can search for fares three days before and after a specific date to find the best price.
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Fare, taxes & fees: Fares include all taxes and fees, except baggage fees. Rates shown reflect fares found by other Orbitz users over the past 7 days. Due to rapidly changing airline prices & seat availability, these fares may no longer be available.
Refunds/changes/cancellations: Itinerary changes, if permitted for the fare, will have a $30 service fee charged by Orbitz. Additional airline charges may apply.
Other conditions: Schedules, fares and rules are subject to change without notice. Seats are limited and may not be available on all flights/dates or in all markets. Lower fares may be available. Fares will not be honored retroactively or in exchange for any wholly/partially unused ticket. Tickets are non-transferable and non-refundable. Fare rules are provided for the selected itinerary before booking.