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Flight Deals from Ontario International Airport to Seattle from $47

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Stops

  • Nonstop
    from $97
  • Up to 1 stop
    $146

Airlines

  • Alaska Airlines
    $136
  • American Airlines
    $302
  • Delta Air Lines
    $146
  • Frontier Airlines
    $97
  • Hahn Air
    $259
  • Hawaiian Airlines
    $150
  • United Airlines
    $232
  • Virgin Atlantic
    $248

Cabin Class

  • Economy
    $97

Departure Airports

  • Ontario International Airport
    $97

Arrival Airports

  • Seattle Tacoma International Airport
    $97

Layover Airports

  • Denver International Airport
    $204
  • Harry Reid International Airport
    $192
  • Phoenix Sky Harbor International Airport
    $302
  • Portland International Airport
    $161
  • Salt Lake City International Airport
    $146
  • San Francisco International Airport
    $212

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Frontier Airlines Logo
Frontier Airlines

06/04/25

ONT
2h 46m
Direct

06/04/25

SEA
Frontier Airlines Logo
Frontier Airlines

06/07/25

SEA
2h 40m
Direct

06/07/25

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

06/03/25

ONT
2h 47m
Direct

06/03/25

SEA
Frontier Airlines Logo
Frontier Airlines

06/07/25

SEA
2h 40m
Direct

06/07/25

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

05/31/25

ONT
3h
Direct

05/31/25

SEA
Frontier Airlines Logo
Frontier Airlines

06/07/25

SEA
2h 40m
Direct

06/07/25

ONT
$97
Free cancellation within 83 hours of booking
Alaska Airlines Logo
Alaska Airlines

05/20/25

ONT
2h 42m
Direct

05/20/25

SEA
Alaska Airlines Logo
Alaska Airlines

06/11/25

SEA
2h 46m
Direct

06/11/25

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

05/21/25

ONT
2h 44m
Direct

05/21/25

SEA
Alaska Airlines Logo
Alaska Airlines

05/29/25

SEA
2h 47m
Direct

05/29/25

ONT
$136
Free cancellation within 83 hours of booking
Delta Air Lines Logo
Delta Air Lines

05/27/25

ONT
2h 55m
Direct

05/27/25

SEA
Delta Air Lines Logo
Delta Air Lines

05/27/25

SEA
4h 58m
SLC

05/27/25

ONT
$146
Free cancellation within 83 hours of booking
Alaska Airlines Logo
Alaska Airlines

05/29/25

ONT
2h 40m
Direct

05/29/25

SEA
Alaska Airlines Logo
Alaska Airlines

06/02/25

SEA
2h 47m
Direct

06/02/25

ONT
$146
Free cancellation within 83 hours of booking
Hawaiian Airlines Logo
Hawaiian Airlines

05/21/25

ONT
2h 44m
Direct

05/21/25

SEA
Hawaiian Airlines Logo
Hawaiian Airlines

06/17/25

SEA
2h 36m
Direct

06/17/25

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

05/20/25

ONT
2h 42m
Direct

05/20/25

SEA
Hawaiian Airlines Logo
Hawaiian Airlines

05/31/25

SEA
2h 47m
Direct

05/31/25

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

06/11/25

ONT
2h 54m
Direct

06/11/25

SEA
Delta Air Lines Logo
Delta Air Lines

06/11/25

SEA
2h 48m
Direct

06/11/25

ONT
$151
Free cancellation within 83 hours of booking
Delta Air Lines Logo
Delta Air Lines

05/27/25

ONT
3h 1m
Direct

05/27/25

SEA
Delta Air Lines Logo
Delta Air Lines

05/27/25

SEA
2h 45m
Direct

05/27/25

ONT
$151
Free cancellation within 83 hours of booking
Delta Air Lines Logo
Delta Air Lines

05/21/25

ONT
3h
Direct

05/21/25

SEA
Delta Air Lines Logo
Delta Air Lines

05/28/25

SEA
4h 58m
SLC

05/28/25

ONT
$152
Free cancellation within 83 hours of booking
Delta Air Lines Logo
Delta Air Lines

06/10/25

ONT
2h 54m
Direct

06/10/25

SEA
Delta Air Lines Logo
Delta Air Lines

06/14/25

SEA
6h 32m
SLC

06/14/25

ONT
$152
Free cancellation within 83 hours of booking
Hawaiian Airlines Logo
Hawaiian Airlines

06/02/25

ONT
2h 42m
Direct

06/02/25

SEA
Hawaiian Airlines Logo
Hawaiian Airlines

06/05/25

SEA
2h 47m
Direct

06/05/25

ONT
$160
Free cancellation within 83 hours of booking
Alaska Airlines Logo
Alaska Airlines

06/05/25

ONT
2h 40m
Direct

06/05/25

SEA
Alaska Airlines Logo
Alaska Airlines

06/11/25

SEA
4h 54m
PDX

06/11/25

ONT
$161
Free cancellation within 83 hours of booking
Hawaiian Airlines Logo
Hawaiian Airlines

05/20/25

ONT
2h 42m
Direct

05/20/25

SEA
Hawaiian Airlines Logo
Hawaiian Airlines

05/31/25

SEA
5h 24m
PDX

05/31/25

ONT
$172
Free cancellation within 83 hours of booking
Hawaiian Airlines Logo
Hawaiian Airlines

05/29/25

ONT
2h 42m
Direct

05/29/25

SEA
Hawaiian Airlines Logo
Hawaiian Airlines

06/10/25

SEA
5h 34m
LAS

06/10/25

ONT
$192
Free cancellation within 83 hours of booking
Hawaiian Airlines Logo
Hawaiian Airlines

06/02/25

ONT
2h 42m
Direct

06/02/25

SEA
Hawaiian Airlines Logo
Hawaiian Airlines

06/07/25

SEA
6h 24m
PDX

06/07/25

ONT
$192
Free cancellation within 83 hours of booking
Frontier Airlines Logo
Frontier Airlines

05/16/25

ONT
7h 10m
LAS

05/16/25

SEA
Frontier Airlines Logo
Frontier Airlines

05/24/25

SEA
2h 36m
Direct

05/24/25

ONT
$192
Free cancellation within 83 hours of booking
Frontier Airlines Logo
Frontier Airlines

06/10/25

ONT
22h 38m
DEN

06/10/25

SEA
Frontier Airlines Logo
Frontier Airlines

06/16/25

SEA
2h 40m
Direct

06/16/25

ONT
$204
Free cancellation within 83 hours of booking
Hawaiian Airlines Logo
Hawaiian Airlines

06/03/25

ONT
2h 40m
Direct

06/03/25

SEA
Hawaiian Airlines Logo
Hawaiian Airlines

06/07/25

SEA
6h 23m
SFO

06/07/25

ONT
$212
Free cancellation within 83 hours of booking
Frontier Airlines Logo
Frontier Airlines

06/08/25

ONT
2h 46m
Direct

06/08/25

SEA
Frontier Airlines Logo
Frontier Airlines

06/15/25

SEA
5h 40m
LAS

06/15/25

ONT
$224
Free cancellation within 83 hours of booking
United Airlines Logo
United Airlines

05/19/25

ONT
6h 21m
SFO

05/19/25

SEA
United Airlines Logo
United Airlines

05/27/25

SEA
2h 55m
Direct

05/27/25

ONT
$232
Free cancellation within 83 hours of booking
United Airlines Logo
United Airlines

06/07/25

ONT
6h 18m
SFO

06/08/25

SEA
United Airlines Logo
United Airlines

06/11/25

SEA
2h 55m
Direct

06/11/25

ONT
$232
Free cancellation within 83 hours of booking
United Airlines Logo
United Airlines

05/30/25

ONT
6h 25m
SFO

05/31/25

SEA
United Airlines Logo
United Airlines

06/02/25

SEA
2h 55m
Direct

06/02/25

ONT
$232
Free cancellation within 83 hours of booking
Virgin Atlantic Logo
Virgin Atlantic

05/24/25

ONT
6h 21m
SLC

05/24/25

SEA
Virgin Atlantic Logo
Virgin Atlantic

05/26/25

SEA
2h 48m
Direct

05/26/25

ONT
$248
Free cancellation within 83 hours of booking
Hahn Air Logo
Hahn Air

06/10/25

ONT
2h 40m
Direct

06/10/25

SEA
Hahn Air Logo
Hahn Air

06/17/25

SEA
2h 36m
Direct

06/17/25

ONT
$259
Free cancellation within 83 hours of booking
Hahn Air Logo
Hahn Air

05/25/25

ONT
2h 42m
Direct

05/25/25

SEA
Hahn Air Logo
Hahn Air

05/31/25

SEA
2h 32m
Direct

05/31/25

ONT
$289
Free cancellation within 83 hours of booking
American Airlines Logo
American Airlines

06/06/25

ONT
7h 21m
PHX

06/06/25

SEA
American Airlines Logo
American Airlines

06/08/25

SEA
3h 14m
Direct

06/08/25

ONT
$302
Free cancellation within 83 hours of booking
American Airlines Logo
American Airlines

06/04/25

ONT
7h 8m
PHX

06/04/25

SEA
American Airlines Logo
American Airlines

06/07/25

SEA
5h 17m
PHX

06/07/25

ONT
$307
Free cancellation within 83 hours of booking

Top Deals on flights from Ontario International Airport to Seattle

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

 Logo

Jun 10

ONT
2h 47m
Direct

Jun 10

SEA

as low as

$47

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

Frontier Airlines Logo
Frontier Airlines

Jun 3

ONT
2h 47m
Direct

Jun 3

SEA

as low as

$48

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

Alaska Airlines Logo
Alaska Airlines

Jun 10

ONT
2h 40m
Direct

Jun 10

SEA

as low as

$68

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

Hawaiian Airlines Logo
Hawaiian Airlines

May 28

ONT
2h 40m
Direct

May 28

SEA

as low as

$75

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

Delta Air Lines Logo
Delta Air Lines

May 21

ONT
3h
Direct

May 21

SEA

as low as

$78

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

American Airlines Logo
American Airlines

Jun 10

ONT
7h 21m
PHX

Jun 10

SEA

as low as

$88

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

United Airlines Logo
United Airlines

Jun 11

ONT
6h 18m
SFO

Jun 12

SEA

as low as

$123

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

Alaska Airlines Logo
Alaska Airlines

May 14

ONT
5h 29m
PDX

May 14

SEA

as low as

$128

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

 Logo

May 20

ONT
6h 10m
SMF

May 20

SEA

as low as

$128

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

Hahn Air Logo
Hahn Air

Jun 3

ONT
2h 42m
Direct

Jun 3

SEA

as low as

$129

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

Frontier Airlines Logo
Frontier Airlines

May 16

ONT
7h 10m
LAS

May 16

SEA

as low as

$142

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

Frontier Airlines Logo
Frontier Airlines

May 24

ONT
7h 16m
DEN

May 25

SEA

as low as

$142

Frequently Asked Questions

What is the typical flight duration from Ontario International Airport to Seattle?
The flight usually takes between 2.5 to 3.5 hours on a direct route, though flights with layovers can extend your travel time to approximately 4 to 6 hours. This duration is influenced by factors like weather conditions and overall route efficiency. It’s advisable to check direct flight schedules in advance to secure the most time-efficient option. This detailed timeframe offers practical planning information for travelers departing from Ontario International Airport and heading to Seattle, ensuring that you have realistic expectations for your journey.
Are there any direct flights from Ontario International Airport to Seattle?
Yes, there are direct flights available between Ontario International Airport and Seattle, though their frequency can depend on the time of year and airline scheduling. Direct flights typically offer a faster journey without the inconvenience of layovers. However, schedules may vary with seasonal demand and market conditions, so it is advisable to verify current flight availability before booking. This streamlined option is ideal for travelers aiming to minimize transit time while enjoying a comfortable and efficient connection between the two cities.
What are the best transportation options from Seattle airport to downtown for travelers arriving from Ontario International Airport?
Travelers arriving in Seattle have several dependable transportation options to reach downtown. Public transit, such as the light rail, costs between $3 to $10 and typically takes 30 to 45 minutes. For more convenience, rideshare services like Uber or Lyft provide door-to-door travel, with fares ranging from $20 to $40 depending on the time and demand. Taxis and shuttle services are also viable, offering moderate pricing and direct service. Consider your budget and schedule to choose the option that best suits your needs as you transition from the airport into downtown Seattle.
What are the must-see attractions in Seattle for travelers coming from Ontario International Airport?
Seattle provides an exciting array of attractions that cater to diverse interests. Iconic landmarks such as the Space Needle, Pike Place Market, and Chihuly Garden and Glass are top picks, offering both cultural and scenic experiences. Additionally, sites like the Museum of Pop Culture and historic Pioneer Square provide deeper insights into the city’s vibrant history. Waterfront strolls along Elliott Bay and nearby art districts complete the itinerary. These highlights create a well-rounded visit and are excellent choices for travelers journeying from Ontario International Airport.
Which local dishes should travelers from Ontario International Airport try when visiting Seattle?
Travelers should indulge in the Pacific Northwest’s culinary specialties when visiting Seattle. Fresh seafood is paramount, with dishes featuring salmon, Dungeness crab, and clam chowder being popular choices. In addition, farm-to-table meals and regional flavors, like artisanal coffee and locally sourced produce dishes, highlight the city’s dining scene. Sampling these local delicacies at renowned markets or eateries provides a taste of Seattle’s vibrant culture. These gastronomic experiences offer both authenticity and delight, making them a must-try for those flying in from Ontario International Airport.
What are the most affordable dining options in Seattle for visitors arriving from Ontario International Airport?
Seattle’s dining scene offers numerous budget-friendly options without compromising on flavor. Local eateries, food trucks, and casual diners in neighborhoods such as Capitol Hill or near the university district frequently serve meals priced between $8 and $15. Ethnic restaurants in various parts of the city also provide hearty meals that typically range from $10 to $20 per dish, while outdoor markets offer fresh, affordable street food. These diverse options allow visitors from Ontario International Airport to explore Seattle’s cultural cuisine while keeping meal costs manageable and leaving room in the budget for more local experiences.
Are there any family-friendly activities in Seattle for travelers from Ontario International Airport?
Yes, Seattle is home to numerous family-friendly activities that cater to visitors of all ages. Popular attractions include the Seattle Aquarium, Woodland Park Zoo, and Pacific Science Center, each offering interactive exhibits and educational programs. Outdoor spaces such as Discovery Park provide safe environments for picnics and nature walks. Additionally, interactive museums and guided tours throughout the city present fun, engaging experiences suitable for children and adults alike. This variety ensures that families arriving from Ontario International Airport have plenty of options to create memorable adventures together in Seattle.
What are the best shopping areas in Seattle for travelers from Ontario International Airport?
Seattle offers a rich shopping experience with diverse neighborhoods catering to all tastes. Downtown areas and districts like Capitol Hill host an array of boutiques, vintage shops, and high-end retail stores, while malls such as Pacific Place and Westlake Center offer a curated shopping environment. Additionally, local landmarks like Pike Place Market present a blend of artisan crafts, fresh produce, and unique souvenirs. These options empower travelers from Ontario International Airport to explore a tailored shopping experience, whether you’re searching for luxury brands, quirky gifts, or exclusive local products.
What cultural tips should travelers from Ontario International Airport know before visiting Seattle?
Travelers should familiarize themselves with Seattle’s blend of progressive modernity and regional tradition. Understanding local tipping practices, respecting personal space, and adopting an eco-friendly mindset are appreciated cultural habits. Engaging with local art galleries, music events, and community festivals can further enrich your visit, helping you connect with the city’s creative spirit. In addition, being aware of the city’s focus on sustainability and public transit etiquette can enhance your interactions. These practical tips assist travelers from Ontario International Airport in embracing Seattle’s welcoming culture and vibrant local lifestyle.
What are the health and safety guidelines for travelers flying from Ontario International Airport to Seattle?
Travelers should adhere to standard health and safety protocols when journeying between these locations. It is important to ensure your vaccinations are up-to-date and to pack any necessary medications. At both the departure and arrival terminals, practicing social distancing, frequent hand sanitizing, and following any posted mask requirements can help ensure a safe journey. Consult the latest travel advisories and local health guidelines before your flight. These proactive measures are essential for maintaining well-being while transitioning from Ontario International Airport to Seattle, ensuring a secure travel experience.
Is there a specific time of year when Seattle is best visited by travelers from Ontario International Airport?
While Seattle maintains a unique charm throughout the year, many visitors prefer traveling during late spring to early fall, roughly from May to September. This period offers milder weather, longer daylight hours, and a full range of outdoor activities ideal for sightseeing. However, the winter season also has its appeal, featuring festive holiday events and fewer crowds at major attractions. Evaluate your interests and weather preferences when planning your trip, as each season brings its own benefits for travelers flying from Ontario International Airport to enjoy all the dynamic experiences Seattle offers.
What are the best seasonal events in Seattle that travelers from Ontario International Airport should not miss?
Seattle hosts a variety of vibrant seasonal events that highlight its cultural and artistic spirit. During the summer, outdoor festivals, music concerts, and street fairs create an energetic ambiance, while spring sees events like the Fremont Fair that celebrate local art and community. In winter, festive events such as the Seattle Holiday Parade light up the city with cheer, and early fall features the eclectic Bumbershoot Arts & Music Festival. Ticket prices for these events typically range from $10 to $50, ensuring that travelers from Ontario International Airport can enjoy an enriching cultural experience while visiting.
What are the best accommodations in Seattle for visitors arriving from Ontario International Airport?
Seattle offers a diverse selection of accommodations suited to various budgets and preferences. Upscale hotels in downtown or near waterfront attractions generally range from $150 to $300 per night and provide premium amenities. For more economical choices, boutique hotels and well-regarded chain options in neighborhoods like Belltown or Capitol Hill offer rates between $80 and $150 per night. Vacation rentals and extended-stay options are also available for longer visits. It is advisable to compare reviews and features such as location, dining options, and proximity to public transportation to ensure a comfortable stay when traveling from Ontario International Airport.
Are there any unique airport amenities in Seattle for travelers arriving from Ontario International Airport?
Yes, Seattle’s airport provides several unique amenities designed to enhance your travel experience. The terminal boasts an array of dining options, comfortable lounges, and art installations that reflect the local cultural identity. Complimentary Wi-Fi, multiple charging stations, and an assortment of retail outlets make waiting times more pleasant. Family-friendly play areas and business centers cater to diverse traveler needs. Before your trip, review the airport’s guide to understand all available facilities so that travelers from Ontario International Airport can enjoy a seamless, enjoyable, and well-equipped prelude to their Seattle visit.
What are the customs requirements for travelers flying from Ontario International Airport to Seattle?
Travelers must comply with U.S. customs and border protection regulations when arriving in Seattle. A valid passport is required, along with a visa or an approved Electronic System for Travel Authorization (ESTA) for eligible visitors. It is essential to declare any items that exceed duty-free allowances and prepare any necessary documentation, especially for high-value items. In advance of your departure, review current customs guidelines and relevant travel advisories to ensure smooth processing. This preparation helps travelers from Ontario International Airport experience a streamlined transition as they enter the United States at Seattle.
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