Vuelos Desde Aeropuerto Internacional LA/Ontario (ONT) a Seattle - Tacoma Intl. (SEA) Empezando Desde $34

Multiple airlines offer direct flights from Los Angeles - Ontario Intl. Airport (ONT) to SEA. These include Alaska Airlines and Delta — start with them if you want to touch down at Seattle sooner rather than later.

Getting from Los Angeles - Ontario Intl. Airport (ONT) to Sea-Tac Airport shouldn’t be too laborious, with flights taking 2 hours and 44 minutes on average. With such a quick journey ahead of you, you’ll hit the tarmac feeling relaxed and ready to enjoy the next leg of your trip.

There’s a flight distance of 960 mi between Ontario Airport and Sea-Tac Airport. This is classified as a medium-haul flight. There’ll be plenty of time to watch the in-flight entertainment and squeeze in a snooze if you’re feeling tired.

If you need to get to Seattle from Ontario, there are a number of airlines with direct flights. One of the most popular is Alaska Airlines (AS), which offers 108 flights on this route each month. An alternative is Delta (DL), which offers 91 flights every month. The more air carriers you consider, the more likely you are to snap up a sensational deal.

This just in! Airfares offered on Thursdays tend to be the cheapest, according to flight demand on Travelocity in 2021. Tuesday and Wednesday prices are also good, but you may want to prepare your budget if booking during the weekend, as data shows that is when prices are generally at their highest.

Frequent travelers may already know this, but earlier in the week can be the cheapest time to fly. In 2021, flights departing on a Monday were generally the cheapest of the week, whereas you may pay a premium for weekend flights when demand is usually high. On average, tickets were most expensive for Saturday departures, so if you need to fly out on a weekend, you might look for deals ahead of time.

Trying to figure out how early you should book your flight? It’s possible to start comparing international airfares on Travelocity up to 12 months in advance. However, it does depend on the carrier as not all airlines release their prices that far out. According to our 2021 flight demand trends, last minute planners can still bag a bargain with some of the cheapest fares appearing 0-2 weeks prior to their travel dates.*According to flight demand on Travelocity.com from January to December 2021. Savings are subject to change based on departure location, date and destination.