Travelling from Ontario International Airport (ONT) to Seattle-Tacoma International Airport (SEA): what you need to know
Expect to be in the air for around 2 hours 46 minutes. That's the average time for a direct flight from Ontario International Airport to Seattle-Tacoma International Airport. Seattle and Ontario share the same timezone (UTC-7).
Choose from 67 weekly flights from Ontario International Airport to Seattle-Tacoma International Airport. The 06:00 departure with Alaska Airlines is the earliest you can take between ONT and SEA. Alaska Airlines operates the latest service of the day at 21:31 if early starts aren't your thing.
Heading away during a peak period like public or school holidays? Expect longer queues at security and check-in. To play it safe, arrive up to four hours before international flights and two hours before domestic departures.
We make it a piece of cake to book a flight with a stopover. To see your options for flights from Ontario International Airport to Seattle-Tacoma International Airport, deselect 'Direct flights only.' Then, pick a flight that has a stop long enough to explore the city of your choice. Some popular stopovers between ONT and SEA include:
Metropolitan Oakland International Airport
Portland International Airport
Sacramento International Airport
How to find the cheapest flights from Ontario International Airport (ONT) to Seattle-Tacoma International Airport (SEA)
The lowest price we've seen for a one-way ticket from Ontario International Airport to Seattle-Tacoma International Airport is Rs8,057. For a return flight on this route, the best price is Rs16,087. Depending on the availability and when you book, these fares can change.
Score cheap flights from ONT to SEA by booking at least 9 months ahead. According to our research, that's the sweet spot for landing a bargain.
Plan your trip for May. That's the cheapest month for tickets from Ontario International Airport to Seattle-Tacoma International Airport. If you're flexible with your travel dates, use the 'Whole month' tool to see the lowest price across every month.
Finding a cheap ticket from ONT to SEA is a breeze with Price Alerts. Simply set up one of these automatic alerts and we'll let you know when there's a better deal.
Use filters to tailor your flights from Ontario International Airport to Seattle-Tacoma International Airport. Simply enter your ideal departure and arrival times, number of stops and airlines. Alternatively, sort your results by 'Cheapest' to see the best deals.
Handy information about Ontario International Airport (ONT)
Travelling from central Ontario to Ontario International Airport takes approximately 1 hour and 28 minutes by public transport. If you ride-share, drive or take a cab, you'll cover the 6 kilometres in 10 minutes or so, depending on traffic conditions.
Have an early flight from Ontario International Airport to Seattle-Tacoma International Airport? Avoid the last-minute rush to the terminal (and sneak in some extra snooze time) by picking one of these hotels near ONT:
Arriving at Seattle-Tacoma International Airport (SEA)
If you're on a late flight from Ontario International Airport to Seattle-Tacoma International Airport, nothing tops the convenience of staying near the terminal. Pick up your bags from the carousel and then be showered and relaxing soon after at one of these hotels near SEA:
Getting from Seattle-Tacoma International Airport (SEA) to central Seattle
Seattle-Tacoma International Airport is approximately 23 kilometres from the centre of Seattle. With your own car rental or if you take a cab, the drive is around 18 minutes.
Getting there by public transport will take you roughly 54 minutes.
When to fly to Seattle-Tacoma International Airport (SEA)
It's time to pick your trip dates for your flight from Ontario International Airport to Seattle-Tacoma International Airport. July is the most popular month to visit Seattle. If you want a more relaxed vibe, go in May.
When reserving your flight from Ontario International Airport to Seattle-Tacoma International Airport, consider the type of weather you enjoy. August is the warmest month in Seattle, with temperatures ranging from 12ºC to 28ºC.
February sees average temperatures of between -1ºC and 11ºC. Search for cheap flights from ONT to SEA sometime around then if you like cooler conditions.
More about Seattle
Once you've locked in your flights from ONT to SEA, you'll need to find a hotel in Seattle. Make one of these accommodation options your base for exploring this exciting destination:
There are so many things to discover in this city it can be tricky to know where to begin. Picardo Farm P-Patch Community Garden, Elliott Bay Waterfront and LMN Architects are top sights which should feature on any good Seattle itinerary.
Complete your Seattle trip with hotels and a car rental
You've booked a cheap ticket to Seattle-Tacoma International Airport — next up is finding somewhere to stay, and maybe even your own set of wheels. We've compared prices across hundreds of companies to bring you the best hotels and car rental deals in Seattle.
