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Cheap Flights from Seattle to Ontario, CA, United States - SEA to ONT Last modified: May 25, 2016 7:36 PM

Popular flights from Seattle to Ontario Last modified: May 25, 2016 7:36 PM

We’ve got the inside scoop on finding the best time to fly for the best price. Not sure when to travel for your next vacation? Find details below on when-to-fly and when-to-buy.

Alaska Airlines
Departure Date Return Date Lowest Price
Jun 15, 2016 Jun 21, 2016 $184
Jul 19, 2016 Jul 26, 2016 $184
American Airlines
Departure Date Return Date Lowest Price
Jun 2, 2016 Jun 4, 2016 $172
United Airlines
Departure Date Return Date Lowest Price
Jun 8, 2016 Jun 15, 2016 $158

How Much Does it Cost to Fly from Seattle to Ontario (SEA to ONT)?

We have collected flight cost data from across the web for travel from Seattle to Ontario, and have found the average flight price for this trip to be $185.

When Can I Buy the Cheapest Flight from Seattle to Ontario (SEA to ONT)?

Airlines can adjust prices for plane tickets from Seattle to Ontario based on the day and time that you decide to book your flight. We have collected data from all airlines, and have discovered that the best days to book flights are Tuesdays, Wednesdays, and Saturdays. Read our article to find more information about the best time to buy airline tickets.

How far in advance should you book flights from Seattle to Ontario

The chart below shows up-to-date information regarding how far in advance a flight from Seattle to Ontario should be booked.

Non Stop versus 1-Stop
Advanced PurchaseNon StopOne Stop
< 7 days $321 $210
7-14 days $172 $158
14-21 days $184 $158
21-30 days $184 $192
30-60 days $184 $192
60-90 days $182 $177
90+ days $181 $193

Cheapest Day To Fly from Seattle to Ontario

The chart below shows up-to-date information regarding the cheapest days to fly from Seattle to Ontario.

Monday Tuesday Wednesday Thursday Friday Saturday Sunday
$182 $177 $158 $172 $183 $205 $213

Lowest Fares Chart By Month from Seattle to Ontario

The chart below shows the lowest fare by month when flying from Seattle to Ontario.

Month Origin Destination Carrier Depart Date Return Date Stops Price
May Seattle Ontario United 5/28/16 6/1/16 1 $210
June Seattle Ontario United 6/8/16 6/15/16 1 $158
July Seattle Ontario American 7/25/16 7/27/16 0 $182
August Seattle Ontario United 8/9/16 8/20/16 1 $177
September Seattle Ontario Alaska 9/1/16 9/5/16 0 $201
October Seattle Ontario United 10/15/16 10/19/16 0 $181
November Seattle Ontario United 11/5/16 11/8/16 1 $203
December Seattle Ontario United 12/30/16 1/4/17 1 $232

Cheapest Weekend Non-Stop Flights for the Next 30 Days from Seattle to Ontario

If you're ready to take a trip in the next 30 days and want to fly on the weekend, you might be wondering which weekend is the cheapest to fly. The chart below shows up-to-date data regarding weekend flight prices from Seattle to Ontario.

Next 30 Days

SunMonTueWedThuFriSat
22 23 24 25 26 27 28
$743
29 30 31 1 2 3 4
$743 $210
5 6 7 8 9 10 11
$210 $247
12 13 14 15 16 17 18
$247 $259
19 20 21 22 23 24 25
$259 $275
26 27 28 29 30 1 2
$275

Non-Stop vs Connecting Flights from Seattle to Ontario (SEA to ONT)

Your Seattle to Ontario flight can be significantly cheaper by choosing 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 Seattle to Ontario is $225.

The average price for non-stop flights from Seattle to Ontario is $207.

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

Nonstop Flight Details from Seattle to Ontario
CarrierMonTueWedThuFriSatSunEarliest FlightLatest Flight
Alaska 3 3 3 3 3 3 3 07:40 20:40

Round Trip vs One Way Flights from Seattle to Ontario (SEA to ONT)

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 Seattle to Ontario. 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 Seattle to Ontario is $91.

The average price for round trip flights from Seattle to Ontario is $194.

Seattle to Ontario Flight Questions

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

Question: How long is a direct flight from Seattle to Ontario?
Answer: The average Seattle to Ontario flight time is 2 hours and 31 minutes.
Question: How many miles are there between Seattle and Ontario?
Answer: The distance from Seattle to Ontario is 955 miles.
Question: How common are direct flights from Seattle to Ontario?
Answer: There are 21 direct flights from Seattle to Ontario.
Question: What is the most popular airline for non-stop flights from Seattle to Ontario?
Answer: Alaska Airlines provides 100% of the non-stop flights between Seattle and Ontario.
Question: What are the most popular connecting cities when flying from Seattle to Ontario?
Answer: Las Vegas, NV

Airlines Flying from Seattle to Ontario (SEA to ONT) Number of flights searched: 104Last modified: May 25, 2016 7:36 PM

Below are the different airlines that fly from Seattle to Ontario with the average price of their plane tickets. Just remember that different airlines offer different levels of comfort and service, so consider convenience when choosing your airline.

Below is the full flight schedule summary of the next 30 days for flights from Seattle to Ontario.

Seattle to Ontario
Airline Connections Mon Tue Wed Thu Fri Sat Sun
American PHX X X X X X X X
Alaska - X X X X X X X
Alaska PDX X X X X X X X
Delta SLC X X X X X X X
United SFO X X X X X X X
Southwest SMF X X X X X X X

Airports for Your Route

These pages contain information about the major airports in Seattle and Ontario, so you can feel comfortable knowing how to get around whether you are about to take off or you just landed.

Cheap Domestic Flights from Seattle - SEA

FlightsAirlineLowest Price
Seattle to Los Angeles American, Alaska, Spirit, United, Virgin America $99
Seattle to Santa Ana American, Alaska, United $143
Seattle to Long Beach American, Alaska, JetBlue, Frontier, United $115
Seattle to Burbank American, Alaska, United $134
Seattle to Las Vegas American, Alaska, JetBlue, Frontier, Spirit, United, Virgin America $111
Seattle to San Diego American, Alaska, Hawaiian, Spirit, United, Virgin America $194
Seattle to Palm Springs American, Alaska, JetBlue, United, Virgin America $195

Cheap Domestic Flights to Ontario - ONT

FlightsAirlineLowest Price
Portland to Ontario American, Alaska, United $169
Bellingham to Ontario American, Alaska $250
Pasco to Ontario American, Alaska, United $252
Yakima to Ontario American, Alaska $232
Wenatchee to Ontario American, Alaska $362
Portland to Los Angeles American, Alaska, Spirit, United, Virgin America $87
Bellingham to Los Angeles American, Alaska $232
Portland to Santa Ana American, Alaska, United $124
Portland to Long Beach American, Alaska, JetBlue, United $137
Portland to Burbank American, Alaska, United $169
Portland to Las Vegas American, Alaska, JetBlue, Spirit, United, Virgin America $116
Portland to San Diego American, Alaska, Spirit, United, Virgin America $188
Pasco to Los Angeles American, Alaska, United $232
Bellingham to Santa Ana American, Alaska $236

Cheap International Flights to Ontario - ONT

FlightsAirlineLowest Price
Vancouver to Ontario American, Air Canada, Alaska, United, WestJet $250
Victoria to Ontario American, Air Canada, Alaska, United, WestJet Check Dates
Vancouver to Los Angeles Pacific Coastal, American, Air Canada, Alaska, United, WestJet $166
Victoria to Los Angeles Pacific Coastal, American, Air Canada, Alaska, United, WestJet $157
Vancouver to Santa Ana Pacific Coastal, American, Air Canada, Alaska, United, WestJet $256
Vancouver to Long Beach American, Air Canada, Alaska, JetBlue, United, WestJet $188
Vancouver to Las Vegas Pacific Coastal, American, Air Canada, Alaska, Allegiant, Spirit, United, WestJet $238
Vancouver to Burbank American, Air Canada, Alaska, JetBlue, United, WestJet $246
Vancouver to San Diego American, Air Canada, Alaska, JetBlue, United, Virgin America, WestJet $231
Cheap Flights from Seattle to Ontario, CA, United States, from $158 Round trip from SEA to ONT