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Amazing Delta SEA to ONT Flight Deals

The cheapest flights to Los Angeles - Ontario Intl. found within the past 7 days were round trip and $79 one way. Prices and availability subject to change. Additional terms may apply.

ONT From SEA Economy Coach Packages on Similar Airlines


FAQs about Delta Air Lines Flights from SEA to ONT

What terminal is Delta Air Lines at Sea-Tac Airport?

The information printed on tickets often differs between airlines. If you're flying from Seattle, WA Airport (SEA-Seattle - Tacoma Intl.) to Ontario, CA Airport (ONT-Los Angeles - Ontario Intl.) with Delta Air Lines and you can't find your terminal details, get in touch with the airline.

Are there Delta Air Lines non-stop flights from SEA to ONT?

There are no direct flights with Delta Air Lines from Seattle, WA Airport (SEA-Seattle - Tacoma Intl.) to Ontario, CA Airport (ONT-Los Angeles - Ontario Intl.). But think of it this way — you can use this time to stretch out your legs before jumping on your connecting flight.

How long is a Delta Air Lines flight from SEA to ONT?

Your Delta Air Lines flight from Seattle, WA Airport (SEA-Seattle - Tacoma Intl.) to Ontario, CA Airport (ONT-Los Angeles - Ontario Intl.) will take an average of 4 hours and 22 minutes. But there are tons of things you can do to entertain yourself. Asking the person beside you about their awesome travel experiences is one of them. If you'd rather a different type of in-flight entertainment, you could always listen to a podcast.

How many direct and indirect flights does Delta Air Lines fly from SEA to ONT?

You can choose from roughly 4 Delta Air Lines flights every day from SEA to ONT.

Flying Tips & Tricks How do I find my flight number?
  • Run your eyes along the itinerary the airline sent to your inbox. It will be a mix of numbers and letters that should be quite easy to spot.
How early can you check bags for a flight?
  • Don't wait around at home if you're packed and ready for your exciting adventure. International flights begin their check-in process three hours before departure. Meeting friends at the airport? Be sure to inform them that baggage drop closes an hour before takeoff. If you're catching a domestic flight, arrive at the terminal one to two hours before departure. Check-in closes 45 minutes before the plane leaves the runway.

*Price based on the lowest price found within past 24 hours and based upon one night stay for two adults over the next thirty days. Prices and availability subject to change. Additional terms may apply.