$64 Cheap flight deals from SeaTac (SEA) to Ontario (QLA)
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This Weekend's Flight Deals from SeaTac to Ontario
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 $64 One Way, $123 Round Trip from SeaTac to Ontario
Prices starting at $123 for return flights and $64 for one-way flights to Ontario were the cheapest prices found within the past 7 days, for the period specified. Prices and availability are subject to change. Additional terms apply.
Ontario economy flight packages
Economy Inn - Ontario Airport/Chino
Sep 11 - Sep 14
Seattle (SEA) to Ontario (ONT)
Reviewed on Jun 21, 2025
Hotel Seville
Sep 11 - Sep 14
Seattle (SEA) to Ontario (ONT)
Reviewed on Jul 1, 2025
More About Flying To Ontario from SeaTac
Route Information for Flights from SeaTac to Ontario
Origin Airport IATA Code | SEA |
|---|---|
Destination Airport IATA Code | QLA |
Distance | 978 mi |
Direct Flight Airlines | American Airlines, Qatar Airways, KLM, JAL, Alaska Airlines, Icelandair, Air France, Delta Air Lines, Hawaiian Airlines, Korean Air, WestJet, Virgin Atlantic |
Earliest Flight Arrival | 5:15PM UTC |
Latest Flight Arrival | 5:30AM UTC |
SeaTac to Ontario
If you are looking for guaranteed low prices on flights from SeaTac to Ontario, then look no further than Orbitz. Orbitz offers everything you need to plan the perfect trip—from cheap deals and bargain holiday packages to cutting-edge mobile tools.
Your Perfect OntarioVacation Package
Orbitz gives you access to exclusive deals and discounts on flights from SeaTac to Ontario. Mix and match hotels and SeaTac to Ontario flights to create your dream vacation. All your options are displayed at a glance with the Orbitz Matrix Display, which shows your package savings and built-in extras, such as free nights.
Stress free Searches Even on the Move
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Don’t Forget the Car Rental
Need a car after your SeaTac to Ontario flights? Not only do you get great rental deals when you book in advance with Orbitz, we can send your flight details to the car rental company, so it knows when your flight from SeaTac to Ontario is delayed.
Low Price Guarantee
With the best deals and easy searching options, Orbitz make it easy and fun to find cheap SeaTac to Ontario flights, a great hotel, or a full vacation package. With Orbitz’s low price guarantee, you always get great discounts on air ticket prices.
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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.