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Flight Deals from Seattle to Ontario International Airport from $48

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Stops

  • Nonstop
    from $97
  • Up to 1 stop
    $156

Airlines

  • Alaska Airlines
    $131
  • American Airlines
    $236
  • Delta Air Lines
    $151
  • Frontier Airlines
    $97
  • Hawaiian Airlines
    $150
  • United Airlines
    $236

Cabin Class

  • Economy
    $97

Departure Airports

  • Seattle Tacoma International Airport
    $97

Arrival Airports

  • Ontario International Airport
    $97

Layover Airports

  • Denver International Airport
    $194
  • Harry Reid International Airport
    $156
  • Phoenix Sky Harbor International Airport
    $236
  • Portland International Airport
    $176
  • Salt Lake City International Airport
    $156
  • San Francisco International Airport
    $156

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Frontier Airlines Logo
Frontier Airlines

06/03/25

SEA
2h 42m
Direct

06/03/25

ONT
Frontier Airlines Logo
Frontier Airlines

06/04/25

ONT
2h 46m
Direct

06/04/25

SEA
$97
Free cancellation within 83 hours of booking
Frontier Airlines Logo
Frontier Airlines

06/07/25

SEA
2h 40m
Direct

06/07/25

ONT
Frontier Airlines Logo
Frontier Airlines

06/11/25

ONT
2h 46m
Direct

06/11/25

SEA
$97
Free cancellation within 83 hours of booking
Frontier Airlines Logo
Frontier Airlines

06/14/25

SEA
2h 40m
Direct

06/14/25

ONT
Frontier Airlines Logo
Frontier Airlines

06/17/25

ONT
2h 46m
Direct

06/17/25

SEA
$99
Free cancellation within 83 hours of booking
Frontier Airlines Logo
Frontier Airlines

06/10/25

SEA
2h 42m
Direct

06/10/25

ONT
Frontier Airlines Logo
Frontier Airlines

06/17/25

ONT
2h 46m
Direct

06/17/25

SEA
$101
Free cancellation within 83 hours of booking
Alaska Airlines Logo
Alaska Airlines

06/03/25

SEA
2h 32m
Direct

06/03/25

ONT
Alaska Airlines Logo
Alaska Airlines

06/03/25

ONT
2h 40m
Direct

06/03/25

SEA
$131
Free cancellation within 83 hours of booking
Alaska Airlines Logo
Alaska Airlines

05/31/25

SEA
2h 31m
Direct

05/31/25

ONT
Alaska Airlines Logo
Alaska Airlines

06/07/25

ONT
2h 42m
Direct

06/07/25

SEA
$136
Free cancellation within 83 hours of booking
Alaska Airlines Logo
Alaska Airlines

05/27/25

SEA
2h 32m
Direct

05/27/25

ONT
Alaska Airlines Logo
Alaska Airlines

06/03/25

ONT
2h 55m
Direct

06/03/25

SEA
$136
Free cancellation within 83 hours of booking
Alaska Airlines Logo
Alaska Airlines

06/10/25

SEA
2h 31m
Direct

06/10/25

ONT
Alaska Airlines Logo
Alaska Airlines

06/16/25

ONT
2h 43m
Direct

06/16/25

SEA
$136
Free cancellation within 83 hours of booking
Hawaiian Airlines Logo
Hawaiian Airlines

05/28/25

SEA
2h 31m
Direct

05/28/25

ONT
Hawaiian Airlines Logo
Hawaiian Airlines

06/04/25

ONT
2h 42m
Direct

06/04/25

SEA
$150
Free cancellation within 83 hours of booking
Hawaiian Airlines Logo
Hawaiian Airlines

06/11/25

SEA
2h 31m
Direct

06/11/25

ONT
Hawaiian Airlines Logo
Hawaiian Airlines

06/16/25

ONT
2h 43m
Direct

06/16/25

SEA
$150
Free cancellation within 83 hours of booking
Delta Air Lines Logo
Delta Air Lines

06/03/25

SEA
2h 44m
Direct

06/03/25

ONT
Delta Air Lines Logo
Delta Air Lines

06/03/25

ONT
3h
Direct

06/03/25

SEA
$151
Free cancellation within 83 hours of booking
Alaska Airlines Logo
Alaska Airlines

06/02/25

SEA
2h 31m
Direct

06/02/25

ONT
Alaska Airlines Logo
Alaska Airlines

06/11/25

ONT
5h 28m
LAS

06/11/25

SEA
$156
Free cancellation within 83 hours of booking
Alaska Airlines Logo
Alaska Airlines

06/05/25

SEA
2h 32m
Direct

06/05/25

ONT
Alaska Airlines Logo
Alaska Airlines

06/10/25

ONT
5h 35m
SFO

06/10/25

SEA
$156
Free cancellation within 83 hours of booking
Delta Air Lines Logo
Delta Air Lines

06/04/25

SEA
2h 45m
Direct

06/04/25

ONT
Delta Air Lines Logo
Delta Air Lines

06/07/25

ONT
6h 25m
SLC

06/07/25

SEA
$156
Free cancellation within 83 hours of booking
Delta Air Lines Logo
Delta Air Lines

06/03/25

SEA
2h 45m
Direct

06/03/25

ONT
Delta Air Lines Logo
Delta Air Lines

06/03/25

ONT
7h 6m
SLC

06/03/25

SEA
$156
Free cancellation within 83 hours of booking
Delta Air Lines Logo
Delta Air Lines

05/27/25

SEA
2h 44m
Direct

05/27/25

ONT
Delta Air Lines Logo
Delta Air Lines

06/03/25

ONT
7h 6m
SLC

06/03/25

SEA
$156
Free cancellation within 83 hours of booking
Delta Air Lines Logo
Delta Air Lines

05/27/25

SEA
2h 44m
Direct

05/27/25

ONT
Delta Air Lines Logo
Delta Air Lines

06/03/25

ONT
3h 2m
Direct

06/03/25

SEA
$156
Free cancellation within 83 hours of booking
Alaska Airlines Logo
Alaska Airlines

06/10/25

SEA
2h 32m
Direct

06/10/25

ONT
Alaska Airlines Logo
Alaska Airlines

06/16/25

ONT
6h 4m
LAS

06/16/25

SEA
$156
Free cancellation within 83 hours of booking
Hawaiian Airlines Logo
Hawaiian Airlines

06/10/25

SEA
2h 31m
Direct

06/10/25

ONT
Hawaiian Airlines Logo
Hawaiian Airlines

06/17/25

ONT
2h 45m
Direct

06/17/25

SEA
$160
Free cancellation within 83 hours of booking
Delta Air Lines Logo
Delta Air Lines

05/26/25

SEA
2h 41m
Direct

05/26/25

ONT
Delta Air Lines Logo
Delta Air Lines

06/04/25

ONT
7h 6m
SLC

06/04/25

SEA
$166
Free cancellation within 83 hours of booking
Hawaiian Airlines Logo
Hawaiian Airlines

05/27/25

SEA
2h 31m
Direct

05/27/25

ONT
Hawaiian Airlines Logo
Hawaiian Airlines

06/03/25

ONT
2h 52m
Direct

06/03/25

SEA
$170
Free cancellation within 83 hours of booking
Alaska Airlines Logo
Alaska Airlines

05/30/25

SEA
2h 31m
Direct

05/30/25

ONT
Alaska Airlines Logo
Alaska Airlines

06/02/25

ONT
7h 26m
PDX

06/02/25

SEA
$176
Free cancellation within 83 hours of booking
Hawaiian Airlines Logo
Hawaiian Airlines

06/03/25

SEA
2h 31m
Direct

06/03/25

ONT
Hawaiian Airlines Logo
Hawaiian Airlines

06/11/25

ONT
5h 35m
LAS

06/11/25

SEA
$182
Free cancellation within 83 hours of booking
Alaska Airlines Logo
Alaska Airlines

06/08/25

SEA
2h 31m
Direct

06/08/25

ONT
Alaska Airlines Logo
Alaska Airlines

06/16/25

ONT
6h 4m
LAS

06/16/25

SEA
$186
Free cancellation within 83 hours of booking
Frontier Airlines Logo
Frontier Airlines

05/31/25

SEA
2h 36m
Direct

05/31/25

ONT
Frontier Airlines Logo
Frontier Airlines

06/07/25

ONT
7h 13m
DEN

06/08/25

SEA
$194
Free cancellation within 83 hours of booking
United Airlines Logo
United Airlines

05/26/25

SEA
7h 4m
SFO

05/26/25

ONT
United Airlines Logo
United Airlines

06/02/25

ONT
2h 51m
Direct

06/02/25

SEA
$236
Free cancellation within 83 hours of booking
United Airlines Logo
United Airlines

06/07/25

SEA
5h 59m
SFO

06/07/25

ONT
United Airlines Logo
United Airlines

06/10/25

ONT
2h 51m
Direct

06/10/25

SEA
$236
Free cancellation within 83 hours of booking
American Airlines Logo
American Airlines

06/04/25

SEA
6h 57m
PHX

06/04/25

ONT
American Airlines Logo
American Airlines

06/10/25

ONT
2h 55m
Direct

06/10/25

SEA
$236
Free cancellation within 83 hours of booking
United Airlines Logo
United Airlines

06/04/25

SEA
5h 4m
SFO

06/04/25

ONT
United Airlines Logo
United Airlines

06/10/25

ONT
2h 51m
Direct

06/10/25

SEA
$236
Free cancellation within 83 hours of booking
United Airlines Logo
United Airlines

05/31/25

SEA
5h 59m
SFO

05/31/25

ONT
United Airlines Logo
United Airlines

06/07/25

ONT
2h 51m
Direct

06/07/25

SEA
$236
Free cancellation within 83 hours of booking

Top Deals on flights from Seattle to Ontario International Airport

Seattle, US (SEA) - Los Angeles, US (LAX)

Frontier Airlines Logo
Frontier Airlines

May 24

SEA
2h 36m
Direct

May 24

ONT

as low as

$48

Seattle, US (SEA) - Los Angeles, US (LAX)

 Logo

May 19

SEA
2h 35m
Direct

May 19

ONT

as low as

$58

Seattle, US (SEA) - Los Angeles, US (LAX)

Alaska Airlines Logo
Alaska Airlines

Jun 10

SEA
2h 32m
Direct

Jun 10

ONT

as low as

$68

Seattle, US (SEA) - Los Angeles, US (LAX)

Hawaiian Airlines Logo
Hawaiian Airlines

Jun 17

SEA
2h 43m
Direct

Jun 18

ONT

as low as

$75

Seattle, US (SEA) - Los Angeles, US (LAX)

Delta Air Lines Logo
Delta Air Lines

Jun 3

SEA
2h 45m
Direct

Jun 3

ONT

as low as

$78

Seattle, US (SEA) - Los Angeles, US (LAX)

Frontier Airlines Logo
Frontier Airlines

Jun 2

PAE
6h 51m
LAS

Jun 2

ONT

as low as

$113

Seattle, US (SEA) - Los Angeles, US (LAX)

American Airlines Logo
American Airlines

May 21

SEA
5h 25m
PHX

May 21

ONT

as low as

$123

Seattle, US (SEA) - Los Angeles, US (LAX)

United Airlines Logo
United Airlines

Jun 11

SEA
4h 54m
SFO

Jun 11

ONT

as low as

$123

Seattle, US (SEA) - Los Angeles, US (LAX)

 Logo

May 19

SEA
5h 30m
OAK

May 19

ONT

as low as

$128

Seattle, US (SEA) - Los Angeles, US (LAX)

Alaska Airlines Logo
Alaska Airlines

May 13

SEA
3h 46m
PDX

May 13

ONT

as low as

$128

Seattle, US (SEA) - Los Angeles, US (LAX)

 Logo

May 27

SEA
2h 31m
Direct

May 27

ONT

as low as

$129

Seattle, US (SEA) - Los Angeles, US (LAX)

 Logo

Aug 9

SEA
4h 35m
SJC

Aug 9

ONT

as low as

$138

Frequently Asked Questions

What is the typical flight duration from Seattle to Ontario International Airport?
The typical flight duration from Seattle to Ontario International Airport ranges from approximately 2.5 to 3.5 hours for a direct flight. In cases where travelers choose connecting options, the overall travel time might extend to 4 to 6 hours, depending on layover lengths and weather conditions. It is important to note that flight times can vary, so checking with your airline for schedules close to your departure date is advisable. Planning ahead and allowing extra time for airport procedures can help ensure a smooth travel experience.
Are there any direct flights from Seattle to Ontario International Airport?
Yes, there are direct flights available from Seattle to Ontario International Airport, although availability can fluctuate seasonally. Several carriers occasionally offer non-stop options, making your travel more convenient and reducing the overall journey time. It is advisable to verify current schedules through travel websites or airline customer service, as direct service might be offered only on select days of the week. Booking early can increase your chances of securing a direct flight, thus adding ease and reliability to your travel plans.
What are the best transportation options from Ontario International Airport to downtown Ontario?
Travelers arriving at Ontario International Airport have several practical options for reaching downtown Ontario. Shuttle services offer a reliable transfer, with fares generally ranging from $15 to $30 per person and transit times between 20 to 30 minutes. Ride-sharing apps such as Uber or Lyft are also popular, providing door-to-door convenience and similar pricing. Additionally, traditional taxis are readily available, though costs may slightly vary. It is recommended to compare these options based on your schedule and budget, and to check the most current rates prior to departure.
What are the must-see attractions in Ontario for travelers arriving from Seattle?
Ontario offers a variety of cultural and historical attractions that enhance the visitor experience. Notable must-see sites include local museums showcasing regional art and history, unique parks like Erin L. Candy Park, and the nostalgic stretch of historic Route 66. Travelers can also explore community festivals and local markets that reflect the city’s diverse heritage. Each attraction provides insight into the local lifestyle, combining outdoor beauty with cultural significance. Allocating sufficient time for these excursions will allow visitors to fully immerse in the distinctive charm of the area.
Which local dishes should travelers from Seattle try when visiting Ontario?
Travelers are encouraged to explore a variety of local culinary delights that highlight both regional ingredients and multicultural influences. Popular dishes include Mexican street tacos, flavorful burritos, and creatively prepared salads using fresh, locally sourced ingredients. Many restaurants also feature fusion cuisines that blend traditional recipes with a modern twist, reflective of the region’s diverse food culture. Sampling meals at local diners or food trucks offers an authentic taste of the community’s gastronomy. Be sure to ask locals for their favorite spots, as insider recommendations often lead to hidden culinary gems.
What are the best family-friendly activities in Ontario for visitors from Seattle?
Families visiting Ontario can choose from an array of engaging activities designed to cater to all age groups. Outdoor parks equipped with picnic areas and playgrounds provide ample space for relaxation and recreational fun. Interactive museums and community centers frequently host family-oriented exhibits and workshops that are both educational and entertaining. Additionally, seasonal festivals and local events often include games, performances, and hands-on activities for kids. Planning your itinerary around these attractions can ensure a balanced mix of culture, education, and outdoor adventure for the whole family.
Are there any seasonal events in Ontario that travelers from Seattle should not miss?
Yes, Ontario hosts several seasonal events that offer visitors a deep dive into its vibrant cultural scene. During the summer months, outdoor concerts and food festivals highlight local cuisine and music, while the fall season brings harvest festivals and art fairs that celebrate regional traditions. Winter may feature holiday markets and festive parades, and spring often showcases community fairs with family-friendly activities. Checking local event calendars in advance is advisable, as events often require early ticket purchases or reservations, ensuring you do not miss these unique cultural experiences.
What are the most affordable dining options in Ontario for travelers from Seattle?
Affordable dining in Ontario is widely accessible through a mix of casual eateries, food trucks, and family-owned diners that offer quality meals without a hefty price tag. Meal prices generally range from $8 to $20 per person, allowing visitors to enjoy a variety of local dishes. Options include popular street food vendors and small restaurants serving regional specialties, often prepared with fresh, local ingredients. Researching popular local spots and checking user reviews online can help you find the best deals. Sampling several dining venues provides an authentic flavor of the local culinary scene without overspending.
What are the best car rental options in Ontario for travelers from Seattle?
Travelers can choose from a range of car rental options in Ontario that suit different budgets and vehicle needs. Major companies, including Enterprise, Hertz, and Avis, offer rentals from economical compact cars to spacious SUVs, with daily rates typically ranging between $30 and $70. Additionally, local rental providers might present competitive deals, especially if you book in advance. It is advisable to compare online rates, review insurance coverage policies, and factor in fuel charges. Ensuring you understand the terms and conditions can make your road explorations more enjoyable and stress-free.
What cultural customs should travelers from Seattle be aware of when visiting Ontario?
Visitors from Seattle should recognize that Ontario is a melting pot of American, Southwestern, and Latin American influences. Social interactions here often reflect a friendly, warm approach with an emphasis on community and hospitality. It is customary to greet others politely and to show respect during local festivals and family gatherings. Tipping policies are generally similar to those in the United States, usually ranging between 15% to 20% in restaurants and service settings. Familiarizing yourself with some basic Spanish phrases may also be appreciated, as language diversity enriches cultural exchanges in the region.
What are the best shopping areas in Ontario for souvenirs for visitors from Seattle?
Ontario offers a variety of shopping districts where visitors can find unique souvenirs that capture the essence of the local culture. Downtown shopping areas and artisan markets are popular, offering handcrafted items, local artwork, and vintage memorabilia. Prices typically range from $10 to $100, ensuring options for different budgets. These shopping spots are great for finding personalized gifts and keepsakes that celebrate regional history and creativity. Exploring these vibrant markets provides not only a shopping experience but also an opportunity to connect with local artisans and learn about the community’s heritage.
Is there a specific time of year when Ontario is best visited by travelers from Seattle?
Ontario is best visited during the spring and fall seasons, when the weather is pleasantly mild and outdoor events are in full swing. During these times, blooming landscapes and comfortable temperatures create ideal conditions for exploring local parks, cultural sites, and community festivals. Spring offers vibrant floral displays and outdoor markets, while fall brings harvest festivals and art shows that celebrate regional traditions. This timing avoids the peak summer heat and winter chill, ensuring a more comfortable and engaging sightseeing experience. Always check local event calendars and weather forecasts to plan your visit accordingly.
What safety tips should travelers from Seattle keep in mind while in Ontario?
Safety is paramount, and visitors are advised to adopt standard precautions while enjoying their visit. Always be aware of your surroundings, particularly in crowded areas or during local events. Secure personal belongings, avoid poorly lit areas at night, and use well-reviewed transportation options such as trusted taxi services or ride-sharing apps. Additionally, keep emergency contact numbers handy and stay updated on local news for any travel advisories. Being informed about the local environment and emergency procedures can ensure a safe experience, enabling you to fully appreciate the unique attractions of the area without undue worry.
What unique airport amenities are available at Ontario International Airport for travelers arriving from Seattle?
Ontario International Airport is equipped with a range of amenities designed for a comfortable transit experience. Travelers can enjoy modern lounges with free Wi-Fi, a variety of dining options from quick service to sit-down restaurants, and retail outlets offering regional souvenirs and necessities. Family-friendly facilities, including dedicated play areas and charging stations, help ease travel stress, and business travelers can take advantage of quiet workstations. These thoughtful amenities contribute to a relaxing and efficient airport experience, ensuring that even the time spent waiting is both pleasant and productive.
What are the best seating options for families traveling from Seattle to Ontario?
Airlines typically offer several seating configurations tailored for family travel on routes from Seattle to Ontario. Many carriers provide bulkhead seats, which give extra legroom and added space for children, making them ideal for families. Certain airlines also designate family seating sections that ensure parents and children are comfortably grouped together. Booking early and specifying your seating requirements can secure these preferred arrangements. Additionally, some carriers offer in-flight amenities geared towards families, such as entertainment systems and child-friendly meal options. Checking with your airline about these choices before booking can greatly enhance your travel experience.
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