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Did you mean flights from Seattle to Ontario, California?

Flights from Ontario, California to Seattle, United States

Ontario, California to Seattle Last modified: Jun 19, 2018 1:27 -04:00Prices shown were found by travelers like you over the past 30 days

We've scanned 54,686,919,170 round trip itineraries and found the cheapest flights to Seattle. Alaska & United frequently offer the best deals to Seattle flights, or select your preferred carrier below to see the cheapest days to fly.

Alaska
ONTSEA
Tue 8/21
nonstop
SEAONT
Tue 8/28
nonstop
$177
United
ONTSEA
Mon 9/24
1 stop
SEAONT
Fri 9/28
1 stop
$202
American
ONTSEA
Sat 9/8
1 stop
SEAONT
Mon 9/10
1 stop
$209
Frontier
ONTSEA
Tue 8/21
1 stop
SEAONT
Tue 8/28
1 stop
$222

How Much is a Flight from Ontario, California to Seattle? Prices shown were found by travelers like you over the past 30 days

We have collected flight cost data from across the web for travel from Ontario, California to Seattle, and have found the average flight price for this trip to be $201.

Where To Buy Cheap Flights from Ontario, California to Seattle?

The best way to find a great deal on airfare is to search multiple sites. When you run a search on FareCompare, we search multiple sites and fare sources all at once so you don't have to - which is why we think FareCompare is the best place to find cheap tickets. Airlines can adjust prices for tickets from Ontario, California to Seattle based on the day and time that you decide to book your flight. We have collected data from all airlines, and have found that Tuesdays, Wednesdays, and Saturdays are often the best days to book flights. If you'd like to learn more, read our article about the best time to buy airline tickets.

How far in advance should I book tickets from Ontario, California to Seattle? Prices shown were found by travelers like you over the past 30 days

The chart below shows up-to-date information regarding how far in advance to book your flight from Ontario, California to Seattle.

Non Stop versus Connecting
Advanced PurchaseNon StopConnecting
< 7 days $398 $255
7-14 days $323 $255
14-21 days $207 $206
21-30 days $217 $230
30-60 days $207 $206
60-90 days $177 $205
90+ days $177 $202

Cheapest Day To Fly from Ontario, California to Seattle Prices shown were found by travelers like you over the past 30 days

We've examined 55,759,690,070 itinerary searches that we've seen for departures in the next 90 days and found that the cheapest day to fly from Ontario, California to Seattle is Tuesday. See the chart below to compare prices for other days of the week.

Monday Tuesday Wednesday Thursday Friday Saturday Sunday
$207$177$177$206$206$205$228

Compare Flight Prices from Ontario, California to Seattle by Month Prices shown were found by travelers like you over the past 30 days

Low priced flights are most commonly available by purchasing between one and three months in advance. International or holiday flights may need to be purchased even further in advance. The chart below shows the cheapest flight prices by month for Ontario, California to Seattle flights.

Month Origin Destination Carrier Depart Date Return Date Stops Price
June Ontario, California Seattle United 6/25/18 7/11/18 1 $255
July Ontario, California Seattle United 7/7/18 7/12/18 1 $206
August Ontario, California Seattle Alaska 8/21/18 8/28/18 0 $177
September Ontario, California Seattle Alaska 9/5/18 9/12/18 0 $177
October Ontario, California Seattle Alaska 10/16/18 10/20/18 0 $177
November Ontario, California Seattle United 11/2/18 11/5/18 1 $206
December Ontario, California Seattle American 12/6/18 12/9/18 1 $218
January Ontario, California Seattle United 1/17/19 1/20/19 1 $206

Cheap Last Minute Flights from Ontario, California to Seattle Prices shown were found by travelers like you over the past 30 days

Looking for cheap last minute flights or a weekend getaway? We've got you covered with weekend flight deals from Ontario, California to Seattle. The chart below shows the best last minute deals and cheap flights this weekend we could find.

Next 30 Days

SunMonTueWedThuFriSat
17 18 19 20 21 22 23
$485
24 25 26 27 28 29 30
$485 $366
1 2 3 4 5 6 7
$366 $230
8 9 10 11 12 13 14
$230 $255
15 16 17 18 19 20 21
$255 $318
22 23 24 25 26 27 28
$318

Connecting Flights vs Direct Flights from Ontario, California to Seattle Prices shown were found by travelers like you over the past 30 days

Flights between some cities may be significantly cheaper if you choose a multi-stop airline ticket. Although these connecting flights sacrifice some convenience, on average, travelers save 20%-60% when they choose to fly multi-stop versus a direct flight.

The average price for connecting flights from Ontario, California to Seattle is $236.

The average price for direct flights from Ontario, California to Seattle is $263.

The chart below shows up to date information regarding non-stop flights from Ontario, California to Seattle.

Weekly Direct Flights from Ontario, California to Seattle - By Carrier
CarrierMonTueWedThuFriSatSunEarliest FlightLatest Flight
Alaska 3 2 3 3 3 2 3 06:00 18:09

One Way Flights vs Round Trip Flights from Ontario, California to Seattle Prices shown were found by travelers like you over the past 30 days

We have found that there is often no price difference between buying a round trip flight versus a one way flight. Increased flexibility is the main benefit when it comes to buying a one way flight from Ontario, California to Seattle. However, booking a round trip flight can be a simpler process. You can compare round trip and one way flights by using our flight comparison.

The average price for one way flights from Ontario, California to Seattle is not available.

The average price for round trip flights from Ontario, California to Seattle is $253.

Ontario, California to Seattle Flight Questions

Below are some common questions that asked about this flight route:

Question: How long is the flight from Ontario, California to Seattle?
Answer: The average Ontario, California to Seattle flight time is 2 hours and 34 minutes.
Question: How far is Seattle from Ontario, California?
Answer: The distance from Ontario, California to Seattle is 955 miles (1,536 kilometers).
Question: How common are direct flights from Ontario, California to Seattle?
Answer: There are 19 direct flights from Ontario, California to Seattle.
Question: What are the most popular Ontario, California airlines for direct flights from Ontario, California to Seattle?
Answer: Alaska Airlines provides 100% of the non-stop flights between Ontario, California and Seattle.
Question: What are the most popular connecting cities when flying from Ontario, California to Seattle?
Answer: San Francisco, CA

Airlines in Ontario, California flying to Seattle Last modified: Jun 19, 2018 1:27 -04:00Number of routes searched: 160Number of itineraries searched: 400,492

Wondering which airlines fly out of Ontario, California to Seattle? We've gathered the average price of Ontario, California airlines with flights to Seattle. Different airlines offer different levels of comfort and service, so consider convenience when choosing your airline.

Below is the full flight schedule summary showing which days of the week individual carriers offer flights for the next 30 days.

Ontario, California to Seattle
Airline Connections Mon Tue Wed Thu Fri Sat Sun
American -
Alaska -
JetBlue -
Major Airlines -
United -
American PHX
American DFW
American SAN
American SFO
Alaska PDX
Alaska SJC
Alaska ANC
Alaska AUS
Major Airlines SLC
Major Airlines PDX
Major Airlines SAN
Major Airlines SFO
Frontier DEN
Frontier AUS
Spirit LAS
United DEN
United SFO
United IAH
United ORD

Ontario, California to Seattle Airports

These are the major commercial airports we're currently monitoring in Ontario, California and Seattle. If your route includes a city with multiple airports, you may be able to find substantial savings by choosing an alternate airport.

Farecompare Research Tools

FareCompare's Flight Schedule Search Tool helps you find information about airline schedule filings, including flight numbers, depart times, and travel distance.

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Cheap Flights from Ontario, California to Seattle