$63 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 $63 One Way, $128 Round Trip from Ontario to SeaTac
Prices starting at $128 for return flights and $63 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
Hotel Sorrento
Sep 11 - Sep 14
Ontario (ONT) to Seattle (SEA)
Reviewed on May 6, 2025
1 Hotel Seattle
Sep 11 - Sep 14
Ontario (ONT) to Seattle (SEA)
Reviewed on May 27, 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
Looking for cheap Ontario to SeaTac flights? Orbitz has the cheapest air fares for flights from Ontario to SeaTac. Plus, with our cutting-edge mobile tools, travel planning has never been easier or more wallet-friendly.
Mobile Deals and Steals
Orbitz is dedicated to providing low fares on Ontario to SeaTac flights. Now you can find the latest deals on-the-go with Orbitz’s mobile apps for iPhone, iPad, Android phones, and tablets. Instantly see discounted rates for hotels, cruises, vacations, and air tickets for a great vacation.
Book Hotels With Confidence
When you’re looking for hotel rooms to go with your bargain flights from Ontario to SeaTac, Orbitz provides you descriptions, photos, reviews, and location maps so you know exactly what you are booking. With easy-to-use Orbitz map tools, you can search for nearby hotels on your mobile device.
Access Your Flight Information Anytime
Use the Orbitz app or the mobile Orbitz site, m.orbtiz.com, to see information about your Ontario to SeaTac flights anytime you need it. Your itinerary is also sent to your email address for reference. Access updates on your flights from Ontario to SeaTac on your mobile device too, including delays and baggage claim details.
Cheap Air Ticket Prices Guaranteed
Orbitz is your number one source for low fares for Ontario to SeaTac flights. Our low price guarantee on domestic and international air tickets give you great savings for a perfect trip to SeaTac. Need hotels too? You can book them last minute on your mobile phone.
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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.