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 2.7 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 Hawaiian Airlines, Alaska Airlines, Frontier 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 Las Vegas, London, Mexico City, Phoenix, Guadalajara, Houston, Dallas, New York, Los Angeles, Denver, Manchester, Edinburgh, San Diego, Chicago, Tokyo, Calgary, Seoul, San Francisco, Austin, Minneapolis.

Question 5

What are the most popular routes to and from Ontario?

Accepted Answer

Travelers frequently search for route combinations, such as Ontario and Dallas, Las Vegas, San Francisco, Guadalajara, Denver, Portland, Edinburgh, London, Phoenix, Minneapolis, Sacramento, Boise, Salt Lake City, Orlando, Chicago, Houston, Honolulu, Cleveland, Indianapolis, Mexico City.

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, Pangborn Memorial, Victoria Inner Harbour SPB.

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, Palm Springs International, Hollywood Burbank, Long Beach, Santa Barbara Municipal, Meadows Field, Hawthorne Municipal.

Question 9

Which airlines fly between Seattle and Ontario?

Accepted Answer

Currently, you can fly between Seattle and Ontario with Alaska Airlines, Frontier Airlines, Hawaiian Airlines, United Airlines.

Question 10

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 11

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 12

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, Pangborn Memorial, Victoria Inner Harbour SPB

Question 13

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, Palm Springs International, Hollywood Burbank, Long Beach, Santa Barbara Municipal, Meadows Field, Hawthorne Municipal.

Question 14

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 15

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 16

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 17

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	£45
Cheapest nonstop round-trip	£113
Cheapest round-trip	£111
Average round-trip	£138
Nonstop flights in July	£71 – £232

Airline	Mon 30.06	Tue 01.07	Wed 02.07	Thu 03.07	Fri 04.07	Sat 05.07	Sun 06.07
Alaska Airlines	---	---	---	2	---	3	3
Frontier Airlines	---	---	---	1	1	1	---
Hawaiian Airlines	---	---	---	4	3	3	1
Weekly flights: 22 total	Daily flights: 3.14 average	Most flights: Thursday 4 flights

Airline	Mon 07.07	Tue 08.07	Wed 09.07	Thu 10.07	Fri 11.07	Sat 12.07	Sun 13.07
Alaska Airlines	5	3	5	5	5	4	5
Frontier Airlines	1	1	1	1	1	1	1
Hawaiian Airlines	---	3	---	5	3	2	---
Weekly flights: 52 total	Daily flights: 7.43 average	Most flights: Monday 5 flights

Airline	Mon 14.07	Tue 15.07	Wed 16.07	Thu 17.07	Fri 18.07	Sat 19.07	Sun 20.07
Alaska Airlines	5	4	5	5	5	4	4
Frontier Airlines	1	1	1	1	1	1	1
Hawaiian Airlines	---	1	---	---	---	---	1
Weekly flights: 41 total	Daily flights: 5.86 average	Most flights: Monday 5 flights

Airline	Mon 21.07	Tue 22.07	Wed 23.07	Thu 24.07	Fri 25.07	Sat 26.07	Sun 27.07
Alaska Airlines	5	5	5	5	5	4	5
Frontier Airlines	1	1	1	1	1	1	1
Hawaiian Airlines	---	---	---	---	---	---	---
Weekly flights: 41 total	Daily flights: 5.86 average	Most flights: Monday 5 flights

Cheap flights from Seattle to Ontario from £45

Explore flight deals to Ontario

Not happy with the results? Try some of our useful filters

Search by stops

Search by carrier

Search by price

Search by departure date

Not happy with the results? Try some of our useful filters

Search by stops

Search by carrier

Search by price

Search by departure date

How much do flights to Ontario cost?

Cheapest one-way trip

Cheapest nonstop round-trip

Cheapest round-trip

Average round-trip

Nonstop flights in July

Key info about flying to Ontario

Weekly direct flights

Check-in for a flight from Seattle to Ontario

Weather in Ontario

Average Weather

14 day forecast

Ontario travel tips

Frequently asked questions

Explore alternative trips

Company

Platform

Features

Discover

Month	Average monthly max temperature	Average monthly min temperature
January	18°C	7°C
February	18°C	7°C
March	19°C	8°C
April	23°C	10°C
May	25°C	12°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

Name	Carrier code	IATA Code	Passport needed during booking
Alaska Airlines	ASA	AS	No
Frontier Airlines	FFT	F9	No
Hawaiian Airlines	HAL	HA	No
United Airlines	UAL	UA	No