Flying from Seattle to Ontario International Airport (ONT): What you need to know
Kick off your travels at Seattle-Tacoma International Airport (SEA), the main airport in Seattle. Look for flights from Seattle to Ontario International Airport (ONT) that jet out of this base.
Take off on a direct Seattle to Ontario International Airport flight and you'll be travelling for an average of 2 hours 40 minutes.
Ontario's timezone is UTC-7, which is the same as Seattle. Ontario International Airport is located in Ontario.
Seattle-Tacoma International Airport (SEA) to Ontario International Airport (ONT) is the most popular route. There are 53 direct weekly departures to choose from. If you have plans before you fly, hop on the last flight with Alaska Airlines at 9:30pm. Choose the first SEA to ONT departure operated by Alaska Airlines at 7:55am if you'd rather get going earlier.
Get to the airport on time so you don't miss your flight from Seattle to ONT. Be there at least two hours ahead for international flights and an hour early for domestic departures to prevent a last-minute sprint to your gate.
If you're heading away during a bank holiday or other peak period, allow for even more time. Get there two hours before domestic flights and up to four hours before international departures. Security and check-in lines will be longer.
Airports in Seattle
Seattle-Tacoma International Airport (SEA)
You can book a direct flight from Seattle to Ontario International Airport (ONT) departing from Seattle-Tacoma International Airport (SEA).
Well-known carriers that offer direct flights from Seattle to Ontario International Airport leaving from SEA include:
The airline with the highest booking numbers between SEA and ONT is Alaska Airlines.
Delta Air Lines is the most punctual carrier on this route.
Located around 23 kilometres from the centre of Seattle, SEA can be reached in about 20 minutes by car, depending on traffic. The journey by public transport will take roughly 55 minutes.
Booked an early flight from Seattle to Ontario International Airport? Avoid the stress of rushing to the terminal (and get some extra shut-eye) by staying at one of these hotels near Seattle-Tacoma International Airport:
81.27% of flights departing from Seattle-Tacoma International Airport reach their destination according to schedule. Given its solid on-time performance, you're unlikely to be delayed when flying out of SEA.
Lake Union Sea Plane Base Airport (LKE)
On public transport, you can travel from central Seattle to LKE in about 25 minutes. The airport is roughly 3 kilometres away, and getting there by car takes approximately 10 minutes.
Start your holiday early with an additional night away from home. Before catching your Seattle to ONT flight, unwind in one of these hotels near Lake Union Sea Plane Base Airport:
About Ontario International Airport (ONT)
If you're arriving on a late flight from Seattle to Ontario International Airport, nothing tops the convenience of staying close to the terminal. Pick up your luggage at baggage claim and then be showered and relaxing soon after at one of these options near ONT:
Fast-track your adventure by picking up an Ontario International Airport rental car. Grab a set of wheels from Dollar, Fox - Rent A Car or Thrifty and explore beyond Ontario's main sights.
Get the best deal by reserving your vehicle around three weeks ahead of your Seattle to Ontario International Airport flight.
You'll find ONT at 2900 E. Airport Drive.
Getting from Ontario International Airport (ONT) to central Ontario
Central Ontario is roughly 5 kilometres from Ontario International Airport. Journey times by car hire or cab will vary based on time of day and traffic conditions, so do a little research ahead of time.
If you're travelling by public transport, expect a journey of about 1 hour 30 minutes.
How to find the cheapest flights from Seattle to Ontario International Airport (ONT)
41 € is currently the best price for a one-way ticket from Seattle to Ontario International Airport. Return flights start from 109 €. These prices may change based on demand.
Don't wait until the last moment. You're more likely to walk away with cheap flights from Seattle to ONT if you book early. Airlines often have some great early bird discounts.
Cheap Seattle to Ontario International Airport tickets are easier to find when your dates are flexible. Use the 'Whole month' search function to compare fares across each month and then fly out on the cheapest day.
Locking in a cheap plane ticket from Seattle to ONT is easy with Price Alerts. All you need to do is set up one of these automatic alerts and we'll get in touch as soon as the price has dropped.
Filters make it easier to dig up a deal for your flight from Seattle to Ontario International Airport. Pick the airlines, flight times and number of stops that match your plans. Then sort the results by 'Cheapest' to find the lowest price right away.
The best time to fly from Seattle to Ontario International Airport (ONT)
August is the most popular month for flights from Seattle to Ontario International Airport (ONT). Visit Ontario in May for a quieter experience.
Lock in a Seattle to ONT plane ticket departing in August if you want to visit the city during its warmest month. Expect temperatures in Ontario to range from 15ºC (59ºF) to 35ºC (95ºF).
If you like travelling in cooler conditions, look for a cheap ticket from Seattle to Ontario International Airport in January when temperatures are between 4ºC (39ºF) and 23ºC (73ºF).
More about Ontario
When it comes to looking for somewhere to rest your head, you'll find the most popular stays in Ontario right here. Check out these hotels after you've booked your flight from Seattle to Ontario International Airport:
Conservation Park and Citizens Business Bank Arena are just a couple of the top attractions to add to your Ontario to-do list. Keep the adventure rolling by checking out Scandia.
Explore more of the United States
You've done Ontario, now it's time to discover more of the United States. Journey about 153 kilometres south to San Diego to tick off its popular sights. From San Diego Zoo to San Diego Balboa Park and USS Midway Museum, you'll have a full itinerary ahead.
If you're eager to discover another corner of the United States, consider Bakersfield, roughly 193 kilometres north-west of Ontario. Kern County Museum, Dr. Martin Luther King, Jr. Park and BAPS Shri Swaminarayan Mandir are among its highlights.
