$66 Cheap flight deals from Seattle (SEA) to Adelanto (ONT)
Earn rewards on top of your airline miles with Orbitz Rewards
Many airlines offer flexible change policies
Sign up to receive text alerts about your trip
This Weekend's Flight Deals from Seattle to Adelanto
This weekend's flight prices found within the past 7 days, for the period specified. Prices and availability are subject to change. Additional terms apply.
Airfares from $66 One Way, $99 Round Trip from Seattle to Adelanto
Prices starting at $99 for return flights and $66 for one-way flights to Adelanto were the cheapest prices found within the past 7 days, for the period specified. Prices and availability are subject to change. Additional terms apply.
Adelanto economy flight packages
Best Western Plus Heritage Inn Ontario Rancho Cucamonga
Jan 23 - Jan 25
Seattle (SEA) to Ontario (ONT)
Reviewed on Sep 13, 2025
Adelanto packages with premium economy flights
Motel 6 Corona, CA
Jan 23 - Jan 28
Seattle (SEA) to Ontario (ONT)
Reviewed on Jul 12, 2025
Studio 6 Ontario, Ca - Convention Center - Airport
Jan 23 - Jan 28
Seattle (SEA) to Ontario (ONT)
Reviewed on Jul 30, 2025
Adelanto first class flight packages
Element Ontario Rancho Cucamonga
Feb 12 - Feb 15
Seattle (SEA) to Ontario (ONT)
Reviewed on Jan 3, 2025
More About Flying To Adelanto from Seattle
Route Information for Flights from Seattle to Adelanto
Origin Airport IATA Code | SEA |
|---|---|
Destination Airport IATA Code | ONT |
Distance | |
Direct Flight Airlines | |
Earliest Flight Arrival | |
Latest Flight Arrival |
Seattle to Adelanto
Orbitz is the number one travel site for finding guaranteed low prices on Seattle to Adelanto flights. Not only do we have discount tickets on domestic and international tickets but our cutting-edge mobile tools keep you informed on the go.
Find Low Prices in One Place
Booking a trip from Seattle to Adelanto has never been easier. Not only will you find great deals on flights, we offer bargains on cruises, car rentals, top-notch hotels, and more. You can also research and add local activities in Adelanto to your flight or hotel reservation to keep the kids happy and active.
Flight Booking, Alerts, and More on Your Mobile Device
Use our mobile app for your iPhone, iPad, or Android phone—or our mobile website m.orbitz.com—to find bargains on flights from Seattle to Adelanto wherever you are. Book your cheap Seattle to Adelanto flights and a hotel room too—even at the last minute. Orbitz also makes your life easier with free alerts that are sent to your mobile phone or email about delays to your upcoming flights from Seattle to Adelanto.
Don’t Miss out on Miles
Accumulate frequent flyer miles or points on your Seattle to Adelanto flights. It’s as simple as entering your frequent flyer number when you’re making your flight reservation on Orbitz to rack up miles on qualified flights from Seattle to Adelanto. You can save your frequent flyer numbers in your Orbitz account to save time during your next flight booking.
Flights from Seattle
- Seattle to Los Angeles
- Seattle to New York
- Seattle to San Francisco
- Seattle to Dallas
- Seattle to Orlando
- Seattle to Chicago
- Seattle to Atlanta
- Seattle to Houston
- Seattle to Bangkok
- Seattle to Sacramento
- Seattle to London
- Seattle to Paris
- Seattle to Oakland
- Seattle to Fort Lauderdale
- Seattle to Washington
- Seattle to Beijing
- Seattle to Santa Ana
- Seattle to Bentonville - Fayetteville
- Seattle to Buenos Aires
- Seattle to Bucharest
Adelanto Airports
More Destinations
- Flights from Okinawa Island to Ontario
- Flights from Green Bay to Ontario
- Flights from Great Falls to Ontario
- Flights from Harlingen to Ontario
- Flights from SeaTac to Ontario
- Flights from Killeen to Ontario
- Flights from Williston to Ontario
- Flights from New Delhi to Ontario
- Flights from Austin to Ontario
- Flights from Chicago to Ontario
- Flights from Madrid to Ontario
- Flights from Seattle to Ontario
- Flights from Mazatlán to Ontario
- Flights from Durango to Ontario
- Flights from Montego Bay to Ontario
- Flights from Merced to Ontario
- Flights from Manhattan to Ontario
- Flights from Minot to Ontario
- Flights from Minneapolis to Ontario
- Flights from Jacksonville to Ontario
- Flights from Oxnard to Ontario
- Flights from Pendleton to Ontario
- Flights from Roswell to Ontario
- Flights from Tripoli to Ontario
- Flights from Amritsar to Ontario
- Flights from Billings to Ontario
- Flights from Pittsburgh to Ontario
- Flights from Tulsa to Ontario
- Flights from Bloomington to Ontario
- Flights from Silao to Ontario
- Flights from Winston - Salem to Ontario
- Flights from Akron to Ontario
- Flights from Knoxville to Ontario
- Flights from Stockton to Ontario
- Flights from Pueblo to Ontario
- Flights from Augusta to Ontario
- Flights from Gainesville to Ontario
- Flights from Tallahassee to Ontario
- Flights from Bullhead City to Ontario
- Flights from Show Low to Ontario
- Flights from Cedar City to Ontario
- Flights from Lancaster to Ontario
- Flights from Hagerstown to Ontario
- Flights from Brownsville to Ontario
- Flights from Windsor to Ontario
- Flights from Walla Walla to Ontario
- Flights from Winnipeg to Ontario
- Flights from Vandalia to Ontario
- Flights from Belize City to Ontario
- Flights from Mississauga to Ontario
- Flights from Corpus Christi to Ontario
- Flights from North Las Vegas to Ontario
- Flights from Eagle to Ontario
- Flights from New Orleans to Loma Linda
- Flights from Frankfurt to Loma Linda
- Flights from Sao Paulo to Loma Linda
- Flights from Incheon to Loma Linda
- Flights from Las Vegas to Victorville
- Flights from Austin to Highland
- Flights from Denver to Highland
- Flights from Detroit to Highland
- Flights from Las Vegas to Highland
- Flights from Miami to Highland
- Flights from Minneapolis - St. Paul to Highland
- Flights from Toronto to Highland
- Flights from Taipei to Highland
- Flights from Newark to Highland
- Flights from Oakland to Highland
- Flights from Fort Myers to Highland
- Flights from Boise to Highland
- Flights from Albany to Highland
- Flights from El Paso to Hesperia
- Flights from Atlanta to Hesperia
- Flights from Baltimore to Hesperia
- Flights from Boston to Hesperia
- Flights from Cairo to Hesperia
- Flights from Chicago to Hesperia
- Flights from Dallas to Hesperia
- Flights from Denver to Hesperia
- Flights from Detroit to Hesperia
- Flights from Houston to Hesperia
- Flights from Minneapolis - St. Paul to Hesperia
- Flights from Phoenix to Hesperia
- Flights from Portland to Hesperia
- Flights from Salt Lake City to Hesperia
- Flights from San Francisco to Hesperia
- Flights from Seattle to Hesperia
- Flights from Vancouver to Hesperia
- Flights from Washington to Hesperia
- Flights from Sacramento to Hesperia
- Flights from Monterrey to Hesperia
- Flights from Newark to Hesperia
- Flights from Oklahoma City to Hesperia
- Flights from Charlotte to Helendale
- Flights from New York to Helendale
- Flights from Phoenix to Helendale
- Flights from Salt Lake City to Helendale
- Flights from Pittsburgh to Helendale
- Flights from Bentonville - Fayetteville to Helendale
- Flights from Boise to Helendale
Fare, taxes & fees: Fares include all taxes and fees, except baggage fees. Rates shown reflect fares found by other Orbitz users over the past 7 days. Due to rapidly changing airline prices & seat availability, these fares may no longer be available.
Refunds/changes/cancellations: Itinerary changes, if permitted for the fare, will have a $30 service fee charged by Orbitz. Additional airline charges may apply.
Other conditions: Schedules, fares and rules are subject to change without notice. Seats are limited and may not be available on all flights/dates or in all markets. Lower fares may be available. Fares will not be honored retroactively or in exchange for any wholly/partially unused ticket. Tickets are non-transferable and non-refundable. Fare rules are provided for the selected itinerary before booking.