Question 1

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

Accepted Answer

A one-way nonstop (direct) flight between Ontario and Seattle takes around 2.9 hours.

Question 2

What is the flight distance between Ontario and Seattle?

Accepted Answer

The flight distance between Ontario and Seattle is 1542 km.

Question 3

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

Accepted Answer

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

Question 4

What are the most popular routes to and from Ontario?

Accepted Answer

Travelers frequently search for route combinations, such as Ontario and Guadalajara, London, Dallas, Las Vegas, San Francisco, Mexico City, Houston, Sacramento, Denver, Honolulu, New York, Portland, Chicago, Washington, D.C., Toronto, Orlando, Cancún, Veracruz, Manila, Edmonton.

Question 5

What are the most popular routes to and from Seattle?

Accepted Answer

Travelers frequently search for route combinations, such as Seattle and London, New York, Calgary, Los Angeles, Mexico City, Guadalajara, San Francisco, Las Vegas, Phoenix, Manchester, Edinburgh, Chicago, Denver, San Diego, Dallas, Boston, Washington, D.C., Salt Lake City, Toronto, Orlando.

Question 6

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, John Wayne, Ontario International, Hollywood Burbank, Palm Springs International, Long Beach, Santa Barbara Municipal, Imperial County, McClellan–Palomar.

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, Yakima Air Terminal, Vancouver Harbour Flight Centre, Victoria Inner Harbour SPB, Pangborn Memorial.

Question 8

Which airlines fly between Ontario and Seattle?

Accepted Answer

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

Question 9

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

Accepted Answer

If you don’t have specific dates for your trip between Ontario and Seattle, 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 10

What flights operate between Ontario and Seattle?

Accepted Answer

Traveling between Ontario and Seattle, 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 11

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, John Wayne, Ontario International, Hollywood Burbank, Palm Springs International, Long Beach, Santa Barbara Municipal, Imperial County, McClellan–Palomar

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, Yakima Air Terminal, Vancouver Harbour Flight Centre, Victoria Inner Harbour SPB, Pangborn Memorial.

Question 13

What time do nonstop (direct) flights between Ontario and Seattle 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 Ontario, such as morning, afternoon, evening, or night, or select the exact hours for departure.

Question 14

What time do nonstop (direct) flights between Ontario and Seattle 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 Seattle, such as morning, afternoon, evening, or night, or select the exact hours for arrival.

Question 15

What time do flights between Ontario and Seattle 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 Ontario, such as morning, afternoon, evening, or night, or select the exact hours for departure.

Question 16

What time do flights between Ontario and Seattle 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 Seattle, such as morning, afternoon, evening, or night, or select the exact hours for arrival.

Cheapest one-way trip	£75
Cheapest nonstop round-trip	£147
Cheapest round-trip	£111
Average round-trip	£200
Nonstop flights in February	£130 – £181

Transport Option	Typical Time	Typical Cost	Frequency	Best For
Link Light Rail (1 Line)	35-45 min	$3-$3.25 (fare to downtown stations)	every 6–15 min (traffic dependent)	budget travelers to downtown
Sound Transit Express Bus 560	45-70 min	$2.75-$3.25 (varies by destination zone)	every 15–30 min (traffic dependent)	Bellevue and Eastside
King County Metro Bus	50-80 min	$2.75 (flat fare)	every 15–30 min (traffic dependent)	local connections
Taxi	25-50 min	$45-$65 (metered; flat rate to downtown available)	on-demand 24/7 (traffic dependent)	door-to-door convenience
Ride-hailing (Uber/Lyft)	25-50 min	$35-$60 (surge pricing may apply)	on-demand 24/7 (traffic dependent)	flexible pickup locations
Private Transfer / Shuttle	25-50 min	$50-$100 (pre-booked; varies by provider)	by reservation (traffic dependent)	groups and guaranteed pickup
Rental Car	25-50 min	$40-$100 (per day; varies by vehicle and provider)	24/7 availability (traffic dependent)	exploring beyond Seattle

Airline	Mon 09.02	Tue 10.02	Wed 11.02	Thu 12.02	Fri 13.02	Sat 14.02	Sun 15.02
Hawaiian Airlines	3	---	2	2	3	3	3
Alaska Airlines	---	2	---	1	---	---	---
Weekly flights: 19 total	Daily flights: 2.71 average	Most flights: Monday 3 flights

Airline	Mon 16.02	Tue 17.02	Wed 18.02	Thu 19.02	Fri 20.02	Sat 21.02	Sun 22.02
Hawaiian Airlines	3	3	3	3	3	1	2
Alaska Airlines	---	3	3	3	3	3	3
Weekly flights: 36 total	Daily flights: 5.14 average	Most flights: Monday 3 flights

Airline	Mon 23.02	Tue 24.02	Wed 25.02	Thu 26.02	Fri 27.02	Sat 28.02	Sun 01.03
Hawaiian Airlines	3	3	3	3	3	3	3
Alaska Airlines	3	3	3	3	---	---	---
Weekly flights: 33 total	Daily flights: 4.71 average	Most flights: Monday 3 flights

Cheap flights from Ontario to Seattle from £75

Explore flight deals to Seattle

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 Seattle cost?

Cheapest one-way trip

Cheapest nonstop round-trip

Cheapest round-trip

Average round-trip

Nonstop flights in February

Getting from Seattle airport to the city center

Key info about flying to Seattle

Weekly direct flights

Check-in for a flight from Ontario to Seattle

Weather in Seattle

Average Weather

14 day forecast

Frequently asked questions

Explore alternative trips

Start your next adventure now. Download our app and explore cheap flights effortlessly!

Company

Platform

Features

Discover

Airline	Mon 02.03	Tue 03.03	Wed 04.03	Thu 05.03	Fri 06.03	Sat 07.03	Sun 08.03
Hawaiian Airlines	3	3	3	3	3	3	3
Alaska Airlines	---	---	---	---	---	---	---
Weekly flights: 21 total	Daily flights: 3 average	Most flights: Monday 3 flights

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

Month	Average monthly max temperature	Average monthly min temperature
January	7°C	2°C
February	8°C	1°C
March	10°C	3°C
April	13°C	5°C
May	18°C	8°C
June	21°C	10°C
July	25°C	13°C
August	25°C	14°C
September	22°C	11°C
October	15°C	8°C
November	10°C	4°C
December	6°C	2°C