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Cheap Flights from Seattle to Ontario / Los Angeles (SEA to ONT)

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Flights from Seattle to Ontario / Los Angeles

Flight Information from Seattle to Ontario / Los Angeles

Cheapest one-way flight

S$184.86

Cheapest month to fly

March

Shortest flight duration

2 hr(s), 32 mins

Direct flight from Seattle to Ontario / Los Angeles

Non-stop airline flights between Seattle and Ontario / Los Angeles

Airticket booking for direct flights from Seattle to Ontario / Los Angeles is now easier than ever. Travel in just 2 hours and 32 minutes, with fares starting at S$185 each way.

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When is the cheapest flight time from Seattle to Ontario / Los Angeles?

Origin	Destination	Departure Date	Price
Seattle (SEA)	Ontario / Los Angeles (ONT)	Sunday, 1 February 2026	No data
Seattle (SEA)	Ontario / Los Angeles (ONT)	Friday, 13 March 2026	S$185
Seattle (SEA)	Ontario / Los Angeles (ONT)	Wednesday, 1 April 2026	No data
Seattle (SEA)	Ontario / Los Angeles (ONT)	Friday, 1 May 2026	No data
Seattle (SEA)	Ontario / Los Angeles (ONT)	Monday, 1 June 2026	No data
Seattle (SEA)	Ontario / Los Angeles (ONT)	Wednesday, 1 July 2026	No data
Seattle (SEA)	Ontario / Los Angeles (ONT)	Saturday, 1 August 2026	No data
Seattle (SEA)	Ontario / Los Angeles (ONT)	Tuesday, 1 September 2026	No data
Seattle (SEA)	Ontario / Los Angeles (ONT)	Thursday, 1 October 2026	No data
Seattle (SEA)	Ontario / Los Angeles (ONT)	Sunday, 1 November 2026	No data
Seattle (SEA)	Ontario / Los Angeles (ONT)	Tuesday, 1 December 2026	No data
Seattle (SEA)	Ontario / Los Angeles (ONT)	Friday, 1 January 2027	No data

Flight Schedule from Seattle to Ontario / Los Angeles

The following are all scheduled flights from Seattle to Ontario / Los Angeles, with the shortest duration being 2 hours and 32 minutes.

Fri, 20 Feb 2026 (Today)

Sat, 21 Feb 2026

Sun, 22 Feb 2026

Airline	Departure Time	Arrival Time	Origin airport	Destination airport
Hawaiian Airlines	08:30	11:08	Seattle (SEA)	Ontario / Los Angeles (ONT)	Book flight
Alaska Airlines	08:30	11:08	Seattle (SEA)	Ontario / Los Angeles (ONT)	Book flight
Delta Airlines	11:15	13:54	Seattle (SEA)	Ontario / Los Angeles (ONT)	Book flight
Hawaiian Airlines	12:30	15:08	Seattle (SEA)	Ontario / Los Angeles (ONT)	Book flight
Alaska Airlines	12:30	15:08	Seattle (SEA)	Ontario / Los Angeles (ONT)	Book flight
Delta Airlines	19:55	22:37	Seattle (SEA)	Ontario / Los Angeles (ONT)	Book flight
Hawaiian Airlines	20:56	23:32	Seattle (SEA)	Ontario / Los Angeles (ONT)	Book flight
Alaska Airlines	20:56	23:32	Seattle (SEA)	Ontario / Los Angeles (ONT)	Book flight

About Ontario / Los Angeles

Looking for cheap flights from Seattle to Ontario / Los Angeles? Discover the best deals for flight tickets on Traveloka! Flying from Seattle to Ontario / Los Angeles will be more enjoyable with our exclusive Traveloka flight promo. Not just flights, you can also find discounted hotels, airport transfers, and attraction tickets from all over the world. With our complete product offering, booking one-way, round-trip, and multi-city flights will be much easier. Book now and dive into endless adventures with Traveloka!

Flight Information to Ontario / Los Angeles

Flight Duration	2 hr(s) 32 mins
Airport in Seattle	Seattle Tacoma Intl (SEA)
Airport in Ontario / Los Angeles	Ontario International Airport (ONT)

Frequently Asked Questions

How much is a flight ticket from Seattle to Ontario / Los Angeles?

Planning to take off from Seattle to Ontario / Los Angeles? Grab your ticket on Traveloka with prices starting from , along with additional discounts & promos that can be found on our promo page.

How early should I get to the airport for a domestic & international flight?

For domestic flights, we recommend arriving at the airport at least 2 hours before your scheduled departure time. For international flights, aim to be at the airport at least 3 hours prior to ensure smooth check-in, security checks, and to account for any unexpected delays. It’s better to be early and relaxed than rushing at the last minute right?

When is the best time to buy airline tickets?

Timing is everything when it comes to grabbing airline tickets. Typically, it’s best to book around 4-6 weeks in advance for domestic flights and 2-3 months for international routes. But the prices also depend on the travel demand, seasonality, and major events. You can always monitor the fare trends on Traveloka and set alerts to catch the best deals or promotions!

What is the cheapest day to fly to Ontario / Los Angeles?

Looking for the best deals to Ontario / Los Angeles? Historically, midweek flights (particularly on Tuesdays and Wednesdays), tend to be cheaper due to lower demand. However, airfares can fluctuate so we recommend keeping an eye on flight prices and being flexible with your travel dates. Booking in advance can be one the hacks to travel to Ontario / Los Angeles without breaking the bank!

What information do I need to know when booking a flight?

When booking a flight, every choice sets the tone for your trip. From the preferred flight route – be it direct or with layovers – to the in-flight experience – whether you opt for a standard economy seat or a luxurious first-class journey – and understanding baggage limits, there's a lot to weigh. Other considerations include travel insurance and the airline's booking policies.

How far in advance should I book an international flight?

For international flights, it’s wise to start your search about 5-6 months ahead with the optimal booking window being around 3-4 months before departure. This period often provides a balance between good fares and a reasonable choice of flight times and routes. But please note that several factors such as destination popularity, peak travel season, and regional major events can influence the timeline.

Do I need a passport and visa to fly between Seattle to Ontario / Los Angeles?

Traveling from Seattle to Ontario / Los Angeles typically requires specific documents. For international flights, a passport is almost always necessary. However, for domestic flights, neither a passport nor a visa is usually required, but an official ID will be needed. The necessity of a visa depends on the traveler's citizenship and Ontario / Los Angeles's entry regulations. It's crucial to verify visa requirements, as rules can differ between countries.

Why should I book my flight with Traveloka?

Booking flight tickets with Traveloka can feel like diving into an ocean of options! Our platform provides the most comprehensive choices to ensure you find the perfect flight for your adventure. With our smooth booking process, you'll also be provided with a variety of payment methods. Anxious about transacting online? We've got you covered with our top-tier security for each transaction! With Traveloka, your flight booking journey becomes hassle-free!

Is there any available promo in Traveloka?

Yes, you can save 5% off on Flights, Hotels, and Attractions up to S$100 using BOOKTRAVELOKA promo code if you are a new user. The promo is only valid for bookings made through the Traveloka App only.