Delta Flights from Seattle (SEA) to Ontario (ONT)
Change your flight without a fee on select flights
Money Saving Bundle when you purchase Hotel + Flight!
Get mobile alerts about flight delays, gate changes and more with the FREE Wotif app
Cheapest Delta Flights from Seattle (SEA) to Ontario (ONT)
Prices found within past 7 days. Prices and availability subject to change. Additional terms may apply.
Delta Flights from SEA to ONT
How much is a Delta flight from Seattle (SEA) to Ontario (ONT)?
One-way flights start as little as NZ$375 and there are roundtrips available from . Get in! You can score some sweet deals with Wotif and Delta.
How many non-stop Delta flights from Seattle (SEA) to Ontario (ONT) are there per day?
Delta flies flights direct every day between Seattle (SEA) and Ontario (ONT).
How far is Seattle (SEA) from Ontario (ONT)?
It’s from Seattle (SEA) to Ontario (ONT).
What is the best airline to fly from Seattle - Tacoma Intl.?
At Wotif, we give you all the available options from our reputable partners. Select the airline that best suits your preferences and membership loyalties. You can fly from Seattle - Tacoma Intl. with: Delta.
Can I change or cancel my Delta tickets from Seattle to Ontario on Wotif?
Change of plans? No worries! We’re right here to make things as easy as possible. Check out the Delta rules and restrictions in your itinerary. You can also use the No Change Fees filter to find flexible plane tickets for future trips. For more information on how to cancel or change your flight on Wotif, visit our customer service portal.
How do I find the best deal on Delta flights from Seattle (SEA) to Ontario (ONT)?
Just review and compare all our awesome offers or enter your travel dates to see more terrific deals on Delta flights from Seattle. And remember you can save even more when you bundle a hotel with your flight as part of a Wotif package. Sweet!
What’s a good way to get cheap Delta flight tickets from Seattle to Ontario?
We have loads of cheap flights, so just enter your travel dates to see what’s available. If you can be flexible on when you fly, you’ll find even more epic flight deals. So get booking!
What is the cheapest time of year to fly from Seattle (SEA) to Ontario (ONT)?
The cheapest time of the year for a return trip is . One-way, the cheapest month to fly is April. Check our deal cards for details.
How long does it take to fly from SEA to ONT?
It typically takes hours to fly directly from Seattle (SEA) to Ontario (ONT).
Epic Hotel in Ontario
Extended Studio Hotel Ontario
Bad hotel lack of any amenities no breakfast run down unsafe area just coffee for breakfast and coffee not avalible
Reviewed on 27 Mar 2026
Residence Inn by Marriott Ontario Airport
Clean room great breakfast
Reviewed on 27 Mar 2026
La Quinta Inn & Suites by Wyndham Ontario Airport
Breakfast was ok
Reviewed on 27 Mar 2026
Discover top hotels, vacation package, cheap car rental deals and more with Wotif!
More Destinations
- Hotels near Los Angeles - Ontario Intl.
- Hotels near Ontario Convention Center
- Guest Houses in Ontario
- Holiday Homes in Ontario
- Cheap Hotels in Ontario
- Hotels with Airport Transfers in Ontario
- Hotels with Balconies in Ontario
- Hotels with Free Breakfast in Ontario
- Hotels with Free Airport Shuttle in Ontario
- Hotels with Free Parking in Ontario
- Hotels with Hot Tubs in Ontario
- Hotels with Kitchenettes in Ontario
- Ski Hotels in Ontario
- Hotels near Ontario Mills Shopping Mall
- Villas in Ontario
- B&B in Rancho Cucamonga
- Caravan Parks in Rancho Cucamonga
- Rancho Cucamonga Hotels
- Flights from Los Angeles - Ontario Intl.
- Alaska Airlines Bozeman (BZN) to Ontario (ONT) flights
- Alaska Airlines Newark Liberty Intl. Airport (EWR) to Ontario (ONT) flights
- Alaska Airlines Orlando (MCO) to Ontario (ONT) flights
- Alaska Airlines Washington (DCA) to Ontario (ONT) flights
- American Airlines Abilene (ABI) to Ontario (ONT) flights
- American Airlines Corpus Christi (CRP) to Ontario (ONT) flights
- American Airlines Houston (IAH) to Ontario (ONT) flights
- American Airlines LON-All Airports to QLA-All Airports flights
- American Airlines Sacramento (SMF) to Ontario (ONT) flights
- American Airlines Fort Myers (RSW) to Ontario (ONT) flights
- China Airlines Xuzhou (XUZ) to Ontario (ONT) flights
- Delta Boise (BOI) to Ontario (ONT) flights
- Delta Bozeman (BZN) to Ontario (ONT) flights
- Delta Charlottesville (CHO) to Ontario (ONT) flights
- Delta Dallas (DFW) to Ontario (ONT) flights
- Delta Madison (MSN) to Ontario (ONT) flights
- Delta Jackson Hole (JAC) to Ontario (ONT) flights
- Delta Newark Liberty Intl. Airport (EWR) to Ontario (ONT) flights
- Frontier Airlines Bloomington (BMI) to Ontario (ONT) flights
- Frontier Airlines Denver (DEN) to Ontario (ONT) flights
- Frontier Airlines Las Vegas (LAS) to Ontario (ONT) flights
- Frontier Airlines Atlanta (ATL) to Ontario (ONT) flights
- Frontier Airlines Cleveland (CLE) to Ontario (ONT) flights
- Jetblue Airways Boston (BOS) to Ontario (ONT) flights
- United Baltimore (BWI) to Ontario (ONT) flights
- United Honolulu (HNL) to Ontario (ONT) flights
- United Fort Lauderdale (FLL) to Ontario (ONT) flights
- United Kansas City (MCI) to Ontario (ONT) flights
- United Redding (RDD) to Ontario (ONT) flights
- United Sacramento (SMF) to Ontario (ONT) flights
- Flights from Auckland to Ontario
- Flights from Boston to Ontario
- Flights from Dallas to Ontario
- Flights from Las Vegas to Ontario
- Flights from Miami to Ontario
- Flights from Dunedin to Ontario
- Flights from Seeduwa - Katunayake to Ontario
- Flights from Wellington to Ontario
- Ace Rental Cars in Ontario
- Ace New Zealand Rental Cars in Ontario
- Ace New Zealand Rental Cars in Rancho Cucamonga
- Addcar rental Rental Cars in Ontario
- Advantage Rent-A-Car Rental Cars in Ontario
- Auto Rent Rental Cars in Ontario
- Car hire near Museum of History and Art
- Car hire Ontario
- Car hire near Pacific Electric Trail
- Car hire Rancho Cucamonga
- Car hire near Villaggio Nail Spa
- Centauro Rental Cars in Ontario
- Centauro Rental Cars in Rancho Cucamonga
- Dollar Rental Cars in Ontario
- Dollar Rent A Car Rental Cars in Ontario
- Easirent.com Rental Cars in Ontario
- Economy Rent a Car Rental Cars in Ontario
- Enterprise Rental Cars in Rancho Cucamonga
- Europcar Rental Cars in Ontario
- Firefly Rental Cars in Ontario
- Global Rent a Car Rental Cars in Ontario
- Goldcar rental Rental Cars in Ontario
- Island Car Rentals Rental Cars in Ontario
- Locauto Rental Cars in Ontario
- Mex Rent A Car Rental Cars in Ontario
- Movida Rental Cars in Ontario
- National Car Rental Rental Cars in Rancho Cucamonga
- Nextcar Rental Cars in Ontario
- Nü Car Rentals Rental Cars in Ontario
- Ok Mobility Rental Cars in Ontario
- Payless Rental Cars in Ontario
- Payless Rental Cars in Rancho Cucamonga
- Priceless Car Rental Rental Cars in Ontario
- Rent A Wreck Rental Cars in Ontario
- Sicily By Car Rental Cars in Ontario
- Sixt Rental Cars in Ontario
- Surprice Car Rentals Rental Cars in Ontario
- Suv Car Hire in Ontario
- Thrifty Car Rental Rental Cars in Ontario
- United Rental Cars in Ontario
^Savings based on all package bookings made with Flight + Hotel on Wotif.co.nz from , as compared to the price of the same components booked separately. Savings will vary based on origin/destination, length of trip, stay dates and selected travel supplier(s). Savings not available on all packages.