Question 1

How long does it take to travel from Seattle to Ontario?

Accepted Answer

A one-way nonstop (direct) flight between Seattle and Ontario takes around 2.5 hours.

Question 2

What is the flight distance between Seattle and Ontario?

Accepted Answer

The flight distance between Seattle and Ontario is 1542 km.

Question 3

What airlines offer nonstop (direct) flights between Seattle and Ontario?

Accepted Answer

Several carriers operate flights between Seattle and Ontario. Airlines offering nonstop (direct) flights include Alaska Airlines.

Question 4

What are the most popular routes to and from Seattle?

Accepted Answer

Travelers frequently search for route combinations, such as Seattle and London, Las Vegas, Denver, Phoenix, Dublin, Melbourne, Orlando, Salt Lake City, San Jose, Vancouver, Manchester, Edinburgh, San Francisco, Philadelphia, Dallas, Washington, D.C., New York, Atlanta, Los Angeles, Rome.

Question 5

What are the most popular routes to and from Ontario?

Accepted Answer

Travelers frequently search for route combinations, such as Ontario and London, New York, Bangkok, San Francisco, Denver, Sacramento, Taipei, Manila, Toronto, Calgary, Las Vegas, San Jose, Orlando, Houston, Macau, Los Angeles, Washington, D.C., Manchester, Detroit, Guadalajara.

Question 6

Which airports are there in Seattle?

Accepted Answer

Seattle is mainly served by Seattle–Tacoma International. But there are other airports nearby, including Kenmore Air Harbor Seaplane Base, Boeing Field.

Question 7

What airports are near Seattle?

Accepted Answer

The main airport in Seattle is Seattle–Tacoma International. It is also served by Vancouver International, Portland International, Abbotsford International, Bellingham International, Paine Field Everett, Vancouver Harbour Flight Centre, Yakima Air Terminal, Victoria Inner Harbour SPB, Pangborn Memorial.

Question 8

What airports are near Ontario?

Accepted Answer

The main airport in Ontario is Ontario International. It is also served by Tijuana International, San Diego International, Ontario International, John Wayne, Hollywood Burbank, Palm Springs International, Long Beach, Santa Barbara Municipal, Imperial County, Meadows Field.

Question 9

Is it possible to combine flights, buses, and trains in one itinerary when traveling between Seattle and Ontario?

Accepted Answer

Yes, it's possible to combine different modes of transport between Seattle and Ontario thanks to our Virtual Interlining technology. Making use of not only flights but also trains and buses between Seattle and Ontario can give rise to new adventures. Read more about how Virtual Interlining works on Kiwi.com Stories.

Question 10

What is Virtual Interlining and how do I use it?

Accepted Answer

Virtual Interlining provides a revolutionary way of traveling. You can combine different modes of transport like flights, trains, and buses into one itinerary. And this often saves money. Thanks to the world's largest carrier database, the Kiwi.com search function enables anyone to mix and match different modes of transport easily.

Question 11

Which airlines fly between Seattle and Ontario?

Accepted Answer

Currently, you can fly between Seattle and Ontario with Alaska Airlines, Frontier Airlines, Spirit Airlines, United Airlines, Allegiant Air.

Question 12

When's the best time to travel between Seattle and Ontario?

Accepted Answer

If you don’t have specific dates for your trip between Seattle and Ontario, you can enter a date range into the departure and return fields. Most carriers on the Kiwi.com website allow you to search and book up to six months from the day of your search. Order the search results by the best, cheapest, or fastest route, or find the cheapest outbound and return combination in the pricing table.

Question 13

What flights operate between Seattle and Ontario?

Accepted Answer

Traveling between Seattle and Ontario, you can choose between direct (nonstop) flights or flights with one or more stops. You can select the number of stops on your journey, including an overnight stopover, and the duration of the stopover. What's more, you can also select where you want to have your stopover. Want to say "Hi" to a friend in another city en route to your destination? Or fancy a quick round of shopping? Go Multi-City or Nomad and add places to your search that you wish to visit.

Question 14

How many airports are there near Seattle?

Accepted Answer

There are a number of airports in and around Seattle. The main one is Seattle–Tacoma International and other nearby airports include Vancouver International, Portland International, Abbotsford International, Bellingham International, Paine Field Everett, Vancouver Harbour Flight Centre, Yakima Air Terminal, Victoria Inner Harbour SPB, Pangborn Memorial

Question 15

How many airports are there near Ontario?

Accepted Answer

There are a number of airports in and around Ontario. The main one is Ontario International and other nearby airports include Tijuana International, San Diego International, Ontario International, John Wayne, Hollywood Burbank, Palm Springs International, Long Beach, Santa Barbara Municipal, Imperial County, Meadows Field.

Question 16

What time do nonstop (direct) flights between Seattle and Ontario depart?

Accepted Answer

This depends on the airline's flight schedule. You can easily select your preferred departure time when you search on our website or mobile app. Choose the time of day you wish to depart from Seattle, such as morning, afternoon, evening, or night, or select the exact hours for departure.

Question 17

What time do nonstop (direct) flights between Seattle and Ontario arrive?

Accepted Answer

This depends on the airline's flight schedule. You can easily select your preferred arrival time when you search on our website or mobile app. Choose the time of day you wish to arrive at Ontario, such as morning, afternoon, evening, or night, or select the exact hours for arrival.

Question 18

What time do flights between Seattle and Ontario depart?

Accepted Answer

This depends on the airline's flight schedule. You can easily select your preferred departure time when you search on our website or mobile app. Choose the time of day you wish to depart from Seattle, such as morning, afternoon, evening, or night, or select the exact hours for departure.

Question 19

What time do flights between Seattle and Ontario arrive?

Accepted Answer

This depends on the airline's flight schedule. You can easily select your preferred arrival time when you search on our website or mobile app. Choose the time of day you wish to arrive at Ontario, such as morning, afternoon, evening, or night, or select the exact hours for arrival.

Cheapest one-way trip	£42
Cheapest round-trip	£107
Average round-trip	£140
Nonstop flights in April	£73 – £195
Most popular airline	Alaska Airlines

Airline	Mon 15.04	Tue 16.04	Wed 17.04	Thu 18.04	Fri 19.04	Sat 20.04	Sun 21.04
Alaska Airlines	4	3	3	3	4	3	4
Frontier Airlines	---	---	---	---	---	---	---

Airline	Mon 22.04	Tue 23.04	Wed 24.04	Thu 25.04	Fri 26.04	Sat 27.04	Sun 28.04
Alaska Airlines	4	3	3	4	4	3	4
Frontier Airlines	---	---	---	---	---	---	---

Airline	Mon 29.04	Tue 30.04	Wed 01.05	Thu 02.05	Fri 03.05	Sat 04.05	Sun 05.05
Alaska Airlines	3	3	3	4	4	3	4
Frontier Airlines	---	---	---	---	---	---	---

Airline	Mon 06.05	Tue 07.05	Wed 08.05	Thu 09.05	Fri 10.05	Sat 11.05	Sun 12.05
Alaska Airlines	4	3	3	4	4	3	4
Frontier Airlines	---	---	---	---	---	---	---

Cheap flights from Seattle, WA to Ontario, CA

Flights starting at £36. Choose between Alaska Airlines, Frontier Airlines, or Spirit Airlines to find the best price.

Tips to know when travelling to Ontario

Cheapest one-way trip

Cheapest round-trip

Average round-trip

Nonstop flights in April

Most popular airline

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One-way trips

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Weekly direct flights

Weekly direct flights for Mon 15.04 - Sun 21.04

Weekly direct flights for Mon 22.04 - Sun 28.04

Weekly direct flights for Mon 29.04 - Sun 05.05

Weekly direct flights for Mon 06.05 - Sun 12.05

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Ontario travel tips

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Name	Carrier code	IATA Code	Passport needed during booking	Online check-in available
Alaska Airlines	ASA	AS	No	Opens 24 days before flight Closes 1 hours before flight
Frontier Airlines	FFT	F9	No	Opens 24 days before flight Closes 1 hours before flight
Spirit Airlines	NKS	NK	No	Opens 24 days before flight Closes 1 hours before flight
United Airlines	UAL	UA	Yes	No
Allegiant Air	AAY	G4	No	Opens 24 days before flight Closes 1 hours before flight

1) Try the best spaghetti in Ontario at Vince's Spaghetti	Family-run Vince's Spaghetti at 1206 W Holt Boulevard in Ontario is a must for you if you have a good appetite. According to the legend, Frank Cucci's uncle started this restaurant as a six-stool open-air French dip stand in 1945. He tempted passersby with great flavours. Now, spaghetti with meat sauce is a locals' favourite Italian meal here.
2) Check out wines around Ontario	Your visit to Ontario will not be completed without delicious wines from the neighbourhood. Check out the Mountain Vista Winery and Vineyards and The Wine Tailor. Both offer romantic nights out and wine tastings six-nights a week. The red Petite Sirah and sweet Port Styled are a must-try.
3) Experience camping in Ontario's landscapes	Ontario's nature is perfect for campings. For example, the Fairplex RV Park is a great option if you need seclusion with nature and modern conveniences. Prices start at $25 per night here.

Month	Average monthly max temperature	Average monthly min temperature
January	18°C	7°C
February	18°C	7°C
March	20°C	8°C
April	23°C	10°C
May	25°C	13°C
June	29°C	16°C
July	33°C	19°C
August	33°C	20°C
September	32°C	18°C
October	27°C	15°C
November	22°C	10°C
December	17°C	7°C