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Cheap Flights from Seattle to Ontario, CA, United States - SEA to ONT

Popular flights from Seattle to Ontario

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
Aug 30, 2016 Sep 14, 2016 $185
American Airlines
Departure Date Return Date Lowest Price
Jun 7, 2016 Jun 11, 2016 $185
United Airlines
Departure Date Return Date Lowest Price
Jun 22, 2016 Jun 29, 2016 $164

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 $201.

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 $293 $256
7-14 days $205 $232
14-21 days $205 $243
21-30 days $222 $217
30-60 days $198 $164
60-90 days $187 $211
90+ days $177 $184

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
$209 $185 $164 $204 $222 $214 $205

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 Alaska 5/19/16 5/24/16 0 $205
June Seattle Ontario United 6/22/16 6/29/16 1 $164
July Seattle Ontario Alaska 7/12/16 7/19/16 0 $187
August Seattle Ontario Alaska 8/30/16 9/14/16 0 $185
September Seattle Ontario Alaska 9/16/16 9/18/16 0 $185
October Seattle Ontario Alaska 10/5/16 10/11/16 0 $177
November Seattle Ontario Alaska 11/5/16 11/8/16 1 $215
December Seattle Ontario United 12/24/16 1/7/17 1 $230

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
8 9 10 11 12 13 14
$622
15 16 17 18 19 20 21
$622 $205
22 23 24 25 26 27 28
$205 $222
29 30 31 1 2 3 4
$222 $238
5 6 7 8 9 10 11
$238 $229
12 13 14 15 16 17 18
$229

TIPSave $119 by flying into Long Beach instead of Ontario from Seattle

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 $198.

The average price for non-stop flights from Seattle to Ontario is $234.

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 4 3 4 3 3 3 4 07:40 20:55

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 $78.

The average price for round trip flights from Seattle to Ontario is $185.

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 27 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 20 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)

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 SJC 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 $87
Seattle to Santa Ana American, Alaska, United $125
Seattle to Long Beach American, Alaska, JetBlue, United $127
Seattle to Burbank American, Alaska, United $145
Seattle to Las Vegas American, Alaska, JetBlue, Spirit, United, Virgin America $80
Seattle to San Diego American, Alaska, Hawaiian, Spirit, United, Virgin America $181
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 $167
Bellingham to Ontario American, Alaska $290
Pasco to Ontario American, Alaska, United $250
Yakima to Ontario American, Alaska Check Dates
Wenatchee to Ontario American, Alaska $386
Portland to Los Angeles American, Alaska, Spirit, United, Virgin America $87
Bellingham to Los Angeles American, Alaska $222
Portland to Santa Ana American, Alaska, United $119
Portland to Long Beach American, Alaska, JetBlue, United $117
Portland to Burbank American, Alaska, United $164
Portland to Las Vegas American, Alaska, JetBlue, Spirit, United, Virgin America $97
Portland to San Diego American, Alaska, Spirit, United, Virgin America $187
Pasco to Los Angeles American, Alaska, United $224
Bellingham to Santa Ana American, Alaska $219

Cheap International Flights to Ontario - ONT

FlightsAirlineLowest Price
Vancouver to Ontario Pacific Coastal, American, Air Canada, Alaska, United, WestJet $240
Victoria to Ontario American, Air Canada, Alaska, United, WestJet $519
Vancouver to Los Angeles Pacific Coastal, American, Air Canada, Alaska, JetBlue, Spirit, United, Virgin America, WestJet $166
Victoria to Los Angeles Pacific Coastal, American, Air Canada, Alaska, United, WestJet $218
Vancouver to Santa Ana Pacific Coastal, American, Air Canada, Alaska, United, WestJet $241
Vancouver to Long Beach American, Air Canada, Alaska, JetBlue, United, WestJet $230
Vancouver to Las Vegas Pacific Coastal, American, Air Canada, Alaska, Hawaiian, Spirit, United, Virgin America, WestJet $234
Vancouver to Burbank American, Air Canada, Alaska, JetBlue, United, WestJet $253
Vancouver to San Diego Pacific Coastal, American, Air Canada, Alaska, JetBlue, United, Virgin America, WestJet $219
Cheap Flights from Seattle to Ontario, CA, United States, from $164 Round trip from SEA to ONT