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  1. Flights
  2. United States
  3. Seattle, WA
  4. Los Angeles - Ontario, CA - Seattle, WA

Cheap Flights from Los Angeles - Ontario, CA (ONT) to Seattle, WA (SEA)

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Discover the cheapest flights from Los Angeles - Ontario, CA to Seattle, WA
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Tue, Apr 21 - Tue, Apr 21
Alaska Airlines
Alaska AirlinesDirect
ONT - SEA
Frontier Airlines
Frontier AirlinesDirect
SEA - ONT
90$
84$
Prime price per passenger
Tue, May 5 - Fri, May 8
Alaska Airlines
Alaska AirlinesDirect
ONT - SEA
Frontier Airlines
Frontier AirlinesDirect
SEA - ONT
90$
84$
Prime price per passenger
Sat, May 16 - Mon, May 18
Alaska Airlines
Alaska AirlinesDirect
ONT - SEA
Frontier Airlines
Frontier AirlinesDirect
SEA - ONT
91$
86$
Prime price per passenger
Wed, Apr 8 - Tue, Apr 14
Alaska Airlines
Alaska AirlinesDirect
ONT - SEA
Alaska Airlines
Alaska AirlinesDirect
SEA - ONT
117$
110$
Prime price per passenger
Tue, Mar 24 - Sun, Mar 29
Alaska Airlines
Alaska AirlinesDirect
ONT - SEA
Alaska Airlines
Alaska AirlinesDirect
SEA - ONT
137$
125$
Prime price per passenger
Sun, May 24 - Tue, May 26
Frontier Airlines
Frontier AirlinesDirect
ONT - SEA
Frontier Airlines
Frontier AirlinesDirect
SEA - ONT
176$
166$
Prime price per passenger
Tue, May 26
Frontier Airlines
Frontier AirlinesDirect
ONT - SEA
-17 %
63$
53$
Prime price per passenger
Fri, Apr 24
Alaska Airlines
Alaska AirlinesDirect
ONT - SEA
70$
66$
Prime price per passenger
Tue, May 5
Alaska Airlines
Alaska AirlinesDirect
ONT - SEA
70$
66$
Prime price per passenger
Sat, May 16
Alaska Airlines
Alaska AirlinesDirect
ONT - SEA
70$
66$
Prime price per passenger
Wed, Apr 1
Alaska Airlines
Alaska AirlinesDirect
ONT - SEA
79$
73$
Prime price per passenger
Thu, Apr 2
Alaska Airlines
Alaska AirlinesDirect
ONT - SEA
79$
73$
Prime price per passenger
The prices shown on this page were available within the last 20 days for the specified periods and should not be considered the final price offered. Please note that availability and prices are subject to change.

Cheapest time to fly from Los Angeles - Ontario, CA to Seattle, WA

If you’re planning to fly this route soon, keep in mind that the lowest fares are usually available at the end of April. Take advantage of this period to save on your flight tickets and make the most of your trip. Please note that prices may change after your search.
Filter by
week: Apr 27 - May 3
Flights from just $78
$112
$98
$136
$83
$139
$123
$98
$78
$81
$88
$87
$123
MarchAprilMay
Flying Time2 h and 55 mWhen flying from Los Angeles - Ontario, CA to Seattle, WA, this can take around 2 h and 55 m in flying time, however this flight duration can vary due to other factors
Cheapest flight$53The best price for flights from Los Angeles - Ontario, CA to Seattle, WA offered by eDreams, which have been found by our customers in the last 3 days
Origin airportOntario InternationalWhen flying from Los Angeles - Ontario, CA to Seattle, WA
Destination airportSeattle-Tacoma International AirportFor the route from Los Angeles - Ontario, CA to Seattle, WA
Peak seasonMarchMarch is the busiest time to fly from Los Angeles - Ontario, CA to Seattle, WA according to search data results from our customers
Airlines operating this routeAlaska Airlines, Frontier AirlinesAirline(s) that fly from Los Angeles - Ontario, CA to Seattle, WA
One-way average Price210.79A flight from Los Angeles - Ontario, CA to Seattle, WA at eDreams will cost around 210.79, this being based on prices of the previous 6 months of data
Best time to bookMarchNovember is one of the most frequent times to fly to Seattle, WA from Los Angeles - Ontario, CA according to real data from our customers
Distance: 967 miles
Los Angeles - Ontario, CA airports
Ontario International (ONT)How far from city center: 2 miles
Seattle, WA airports
Seattle All Airports (SEA)How far from city center: 11 miles

Are you planning to travel to Seattle, WA for vacations, business or family visits? eDreams offers you the cheapest flights and best deals departing from Los Angeles - Ontario, CA. With our fast search engine you will get a large selection of airfares from standard and low cost airlines worldwide and easily book your tickets for this route. If you are flexible we help you identify the cheapest day to fly to Seattle, WA and if you need to leave soon you can check our most convenient last minute fares. Read all the useful information about your next destination and proceed to the reservation, indicating your flight dates and completing your travel booking with hotels and car rental!

Frequently asked questions about flights from Los Angeles - Ontario, CA to Seattle, WA

What are the benefits of booking flexible flight tickets?
Using the flexible flight ticket, you're guaranteed a refund or a rebooking option (without fees) in case of flight cancellations when travelling to United States. At eDreams have you covered!
On average, how much is the price of a flight from Los Angeles - Ontario, CA to Seattle, WA?
When you fly from Los Angeles - Ontario, CA to Seattle, WA the average price is 210.79. However, this price depends on many other factors such as seasonality or how far in advance the route has been booked.
For flights from Los Angeles - Ontario, CA to Seattle, WA, how can I find the cheapest price?
The cheapest price for a flight from Los Angeles - Ontario, CA to Seattle, WA is $53. At eDreams we use different machine learned based methodologies to find our costumers the best option available, considering airline combinations, stopovers and direct flights as well as different criteria for inbound and outbound journeys.
When booking, when is the best time to get the best prices for flights from Los Angeles - Ontario, CA to Seattle, WA?
The most popular months to book a trip from Los Angeles - Ontario, CA to Seattle, WA are September, August and July, based on the searches of our customers.
When is the best time to travel from Los Angeles - Ontario, CA to Seattle, WA?
The best time of the year to visit Seattle, WA depends on lots of personal preferences, especially the price. Regarding popularity, September is the best month to fly to Seattle, WA from Los Angeles - Ontario, CA in terms of searches from our customers, followed by August and October. If you prefer to avoid the busy season and get away from the crowds January, March and November are the months with fewer searches for Los Angeles - Ontario, CA - Seattle, WA.
How long does the flight from Los Angeles - Ontario, CA to Seattle, WA take?
Flight length from Los Angeles - Ontario, CA to Seattle, WA is around 2 h and 55 m on average, at an average distance of 966.72 mi, for flights for the route (which may have 1 or more stops in other cities in between).

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