Cheap Flights from Seattle, WA to Ontario, CA from $77

One way Round trip

Adults

Children under 12

Infants under 2 without place

Economy

Business

First

done

Return flight: Ontario – Seattle

Page navigation

Price Calendar Cheap Flights Flights Schedule

On Cheapflightsplus.com you will find 3 direct and 156 connecting flights from Seattle to Ontario. You can compare airfare deals from 7 airlines and multiple travel sites from $77, book and save on cheap plane tickets and last minute offers. Also check out SEA-ONT flight schedule to find best flight time, convenient departure and arrival airports.

Find One-Way and Round-Trip Seattle to Ontario Flight Deals

To find the cheapest one way airline ticket select the date with the lowest price on the calendar below and click «Find Flights». To search for round-trip flight deals click on the link «Check prices for return flights» and select the date of the return flight. Cheapest flights in November: $77 (one-way), $132 (round-trip).

Direct flights

Check to choose departure date Check to choose departure date

Check prices for return flight

Find flights

Best Flights from Seattle to Ontario Today

Take a look at the list of non stop flights and flights with layovers from Seattle to Ontario with the lowest price of $77. The fastest direct flight takes 2h 38m and the fastest connecting – 3h 54m.

Price	Departure	Arrival	Flight Duration	Airline	Flight
from $118 Find flight	13:25 Seattle Seattle-Tacoma Intl	16:03 Ontario Ontario Int.	2h 38m	Alaska Airlines	AS2676
from $193 Find flight	19:05 Seattle Seattle-Tacoma Intl	21:43 Ontario Ontario Int.	2h 38m	Alaska Airlines	AS2884
from $194 Find flight	09:10 Seattle Seattle-Tacoma Intl	11:48 Ontario Ontario Int.	2h 38m	Alaska Airlines	AS2346
from $77 Find flight	14:55 Seattle Seattle-Tacoma Intl	21:43 Ontario Ontario Int.	6h 48m layover 2h 42m - Phoenix	American Airlines	AA500 AA634
from $78 Find flight	15:44 Seattle Seattle-Tacoma Intl	23:19 Ontario Ontario Int.	7h 35m layover 0h 40m - Dallas	American Airlines	AA2240 AA2555
from $78 Find flight	05:30 Seattle Seattle-Tacoma Intl	13:38 Ontario Ontario Int.	8h 8m layover 1h 21m - Dallas	American Airlines	AA2748 AA1086
from $110 Find flight	16:50 Seattle Seattle-Tacoma Intl	22:15 Ontario Ontario Int.	5h 25m layover 2h 0m - Oakland	Southwest Airlines	WN1407 WN1554
from $113 Find flight	11:40 Seattle Seattle-Tacoma Intl	19:09 Ontario Ontario Int.	7h 29m layover 2h 30m - Denver	Delta Air Lines Inc.	DL1418 F9371
from $114 Find flight	13:51 Seattle Seattle-Tacoma Intl	22:45 Ontario Ontario Int.	8h 54m layover 3h 58m - Denver	Frontier Airlines	F9142 WN1653
from $115 Find flight	14:05 Seattle Seattle-Tacoma Intl	22:45 Ontario Ontario Int.	8h 40m layover 3h 55m - Denver	Alaska Airlines	AS920 WN1653
from $119 Find flight	06:45 Seattle Seattle-Tacoma Intl	14:15 Ontario Ontario Int.	7h 30m layover 3h 35m - Phoenix	Southwest Airlines	WN849 WN1369
from $122 Find flight	08:45 Seattle Seattle-Tacoma Intl	13:21 Ontario Ontario Int.	4h 36m layover 1h 30m - Portland	Alaska Airlines	AS2813 AS3444

Show all tickets

*Departure and arrival times - local. Prices indicated for one-way flights. Information updated on May 01, 2024

Flight Schedule Seattle (Washington) to Ontario (California)

Full flight schedule will help you in detecting at what time planes fly from Seattle to Ontario. You can also specify the concrete flights and airlines on the route and how long the flight actually is. Use the calendar for today, tomorrow or other specific date as some flights are available only on certain days of the week.

Departure	Flight Details	Flight Duration	Price
09:10 — 11:48	09:10 — 11:48 AS2346 Alaska Airlines Seattle — Ontario	2h 38m	Find flight from$194
13:25 — 16:03	13:25 — 16:03 AS2676 Alaska Airlines Seattle — Ontario	2h 38m	Find flight from$118
19:05 — 21:43	19:05 — 21:43 AS2884 Alaska Airlines Seattle — Ontario	2h 38m	Find flight from$193
05:15 — 11:25	05:15 — 08:05 AA2859 American Airlines Seattle — Phoenix 2h 3m stop 10:08 — 11:25 AA524 American Airlines Phoenix — Ontario	6h 10m including layover	Find flight from$170
05:30 — 13:38	05:30 — 11:18 AA2748 American Airlines Seattle — Dallas 1h 21m stop 12:39 — 13:38 AA1086 American Airlines Dallas — Ontario	8h 8m including layover	Find flight from$78
06:00 — 19:09	06:00 — 09:35 WN1582 Southwest Airlines Seattle — Denver 8h 16m stop 17:51 — 19:09 F9371 Frontier Airlines Denver — Ontario	13h 9m including layover	Find flight from$104
06:45 — 14:15	06:45 — 09:30 WN849 Southwest Airlines Seattle — Phoenix 3h 35m stop 13:05 — 14:15 WN1369 Southwest Airlines Phoenix — Ontario	7h 30m including layover	Find flight from$119
07:00 — 19:09	07:00 — 10:39 F9144 Frontier Airlines Seattle — Denver 7h 12m stop 17:51 — 19:09 F9371 Frontier Airlines Denver — Ontario	12h 9m including layover	Find flight from$101
07:40 — 12:30	07:40 — 10:30 DL2075 Delta Air Lines Inc. Seattle — Salt Lake City 1h 18m stop 11:48 — 12:30 DL1389 Delta Air Lines Inc. Salt Lake City — Ontario	4h 50m including layover	Find flight from$163
08:00 — 15:38	08:00 — 13:50 AA1667 American Airlines Seattle — Dallas 52m stop 14:42 — 15:38 AA1424 American Airlines Dallas — Ontario	7h 38m including layover	Find flight from$193
08:45 — 13:21	08:45 — 09:35 AS2813 Alaska Airlines Seattle — Portland 1h 30m stop 11:05 — 13:21 AS3444 Alaska Airlines Portland — Ontario	4h 36m including layover	Find flight from$122
09:15 — 19:09	09:15 — 12:52 UA2488 United Airlines Seattle — Denver 4h 59m stop 17:51 — 19:09 F9371 Frontier Airlines Denver — Ontario	9h 54m including layover	Find flight from$178
09:30 — 19:49	09:30 — 15:18 AA2477 American Airlines Seattle — Dallas 3h 30m stop 18:48 — 19:49 AA810 American Airlines Dallas — Ontario	10h 19m including layover	Find flight from$170
10:00 — 19:09	10:00 — 13:30 AS1474 Alaska Airlines Seattle — Denver 4h 21m stop 17:51 — 19:09 F9371 Frontier Airlines Denver — Ontario	9h 9m including layover	Find flight from$104
10:05 — 17:15	10:05 — 13:50 WN1436 Southwest Airlines Seattle — Denver 2h 5m stop 15:55 — 17:15 WN246 Southwest Airlines Denver — Ontario	7h 10m including layover	Find flight from$174
11:00 — 19:49	11:00 — 16:58 AA2410 American Airlines Seattle — Dallas 1h 50m stop 18:48 — 19:49 AA810 American Airlines Dallas — Ontario	8h 49m including layover	Find flight from$170
11:40 — 19:09	11:40 — 15:21 DL1418 Delta Air Lines Inc. Seattle — Denver 2h 30m stop 17:51 — 19:09 F9371 Frontier Airlines Denver — Ontario	7h 29m including layover	Find flight from$113
12:00 — 19:49	12:00 — 17:58 AA2923 American Airlines Seattle — Dallas 50m stop 18:48 — 19:49 AA810 American Airlines Dallas — Ontario	7h 49m including layover	Find flight from$170
12:15 — 17:55	12:15 — 14:35 WN1569 Southwest Airlines Seattle — Oakland 2h stop 16:35 — 17:55 WN938 Southwest Airlines Oakland — Ontario	5h 40m including layover	Find flight from$174
13:51 — 22:45	13:51 — 17:32 F9142 Frontier Airlines Seattle — Denver 3h 58m stop 21:30 — 22:45 WN1653 Southwest Airlines Denver — Ontario	8h 54m including layover	Find flight from$114
14:05 — 22:45	14:05 — 17:35 AS920 Alaska Airlines Seattle — Denver 3h 55m stop 21:30 — 22:45 WN1653 Southwest Airlines Denver — Ontario	8h 40m including layover	Find flight from$115
14:55 — 21:43	14:55 — 17:48 AA500 American Airlines Seattle — Phoenix 2h 42m stop 20:30 — 21:43 AA634 American Airlines Phoenix — Ontario	6h 48m including layover	Find flight from$77
15:03 — 20:01	15:03 — 17:22 UA324 United Airlines Seattle — San Francisco 1h 18m stop 18:40 — 20:01 UA5611 United Airlines San Francisco — Ontario	4h 58m including layover	Find flight from$170
15:44 — 23:19	15:44 — 21:40 AA2240 American Airlines Seattle — Dallas 40m stop 22:20 — 23:19 AA2555 American Airlines Dallas — Ontario	7h 35m including layover	Find flight from$78
16:05 — 22:00	16:05 — 18:40 WN998 Southwest Airlines Seattle — Las Vegas 2h 25m stop 21:05 — 22:00 WN1662 Southwest Airlines Las Vegas — Ontario	5h 55m including layover	Find flight from$174
16:50 — 22:15	16:50 — 18:55 WN1407 Southwest Airlines Seattle — Oakland 2h stop 20:55 — 22:15 WN1554 Southwest Airlines Oakland — Ontario	5h 25m including layover	Find flight from$110
17:04 — 21:56	17:04 — 19:55 DL1380 Delta Air Lines Inc. Seattle — Salt Lake City 1h 20m stop 21:15 — 21:56 DL3649 Delta Air Lines Inc. Salt Lake City — Ontario	4h 52m including layover	Find flight from$162
17:55 — 15:44 +1 day	17:55 — 20:57 AA2197 American Airlines Seattle — Phoenix 17h 38m stop 14:35 — 15:44 AA5961 American Airlines Phoenix — Ontario	21h 49m including layover	Find flight from$137
19:20 — 21:09 +1 day	19:20 — 22:53 AS684 Alaska Airlines Seattle — Denver 20h 52m stop 19:45 — 21:09 UA683 United Airlines Denver — Ontario	25h 49m including layover	Find flight from$124
19:20 — 10:05 +1 day	19:20 — 22:53 AS684 Alaska Airlines Seattle — Denver 9h 52m stop 08:45 — 10:05 WN1367 Southwest Airlines Denver — Ontario	14h 45m including layover	Find flight from$153
21:15 — 12:31 +1 day	21:15 — 23:15 AS2772 Alaska Airlines Seattle — San Francisco 11h 50m stop 11:05 — 12:31 UA5371 United Airlines San Francisco — Ontario	15h 16m including layover	Find flight from$157
23:50 — 09:58 +1 day	23:50 — 05:37 AA2473 American Airlines Seattle — Dallas 3h 18m stop 08:55 — 09:58 AA1472 American Airlines Dallas — Ontario	10h 8m including layover	Find flight from$78
18:15 — 10:10 +1 day	18:15 — 21:50 WN1565 Southwest Airlines Seattle — Denver 8h 25m stop 06:15 — 07:50 WN506 Southwest Airlines Denver — Oakland 1h stop 08:50 — 10:10 WN164 Southwest Airlines Oakland — Ontario	15h 55m including layover	Find flight from$156
18:15 — 09:18 +1 day	18:15 — 21:50 WN1565 Southwest Airlines Seattle — Denver 8h 10m stop 06:00 — 07:30 DL2487 Delta Air Lines Inc. Denver — Salt Lake City 1h 5m stop 08:35 — 09:18 DL4152 Delta Air Lines Inc. Salt Lake City — Ontario	15h 3m including layover	Find flight from$157
20:00 — 10:10 +1 day	20:00 — 21:46 AS2083 Alaska Airlines Seattle — Reno 9h 19m stop 07:05 — 08:05 WN1284 Southwest Airlines Reno — Oakland 45m stop 08:50 — 10:10 WN164 Southwest Airlines Oakland — Ontario	14h 10m including layover	Find flight from$171
20:00 — 12:31 +1 day	20:00 — 21:46 AS2083 Alaska Airlines Seattle — Reno 10h 29m stop 08:15 — 09:25 UA5337 United Airlines Reno — San Francisco 1h 40m stop 11:05 — 12:31 UA5371 United Airlines San Francisco — Ontario	16h 31m including layover	Find flight from$176
21:15 — 12:20 +1 day	21:15 — 23:15 AS2772 Alaska Airlines Seattle — San Francisco 7h 50m stop 07:05 — 08:40 WN1393 Southwest Airlines San Francisco — Las Vegas 2h 40m stop 11:20 — 12:20 WN1147 Southwest Airlines Las Vegas — Ontario	15h 5m including layover	Find flight from$171
22:55 — 10:10 +1 day	22:55 — 23:54 AS2514 Alaska Airlines Seattle — Spokane 5h 46m stop 05:40 — 07:45 WN543 Southwest Airlines Spokane — Oakland 1h 5m stop 08:50 — 10:10 WN164 Southwest Airlines Oakland — Ontario	11h 15m including layover	Find flight from$193

Departure	Arrival	Flight Details	Flight Time	Price
		stop stop	including layover	Find flight from$

*Departure and arrival times - local. Updated on May 1, 2024

Flight Information

Below we will explain in detail what the flights cost on the destination from Seattle to Ontario depends on and how to choose the most interesting flight option for you.

Distance between Seattle and Ontario is 1540 miles. Time difference between the cities is 0h. Airplanes depart 05:15 to 23:59 from 3 Seattle airports and arrive 05:15 to 23:59 to 2 Ontario airports. Average flight time is 2h 38m.

The fastest flight 2h 38m
Average flight time 2h 38m
The earliest flight 05:15
The latest flight 23:59
Distance 957 ml

What is the lowest airfare Seattle to Ontario?

The cheapest plane ticket found by our users is $77. This airfare is for economy class on one-way AA500 flight by American Airlines for August 18, 2020 which leaves Seattle-Tacoma Intl in Seattle at 14:55 am and arrives at Ontario Ontario Int. at 21:43.

Economy class

$77

Find

Business class

Find

First class

Find

Popular Airlines on the Route

The flight Seattle — Ontario is served by 7 regular airlines and 3 low-cost airlines. Most of the flights on this route are operated by American Airlines - 28 departures per week at the price of from $ 77 . And the most expensive tickets are offered by Alaska Airlines airline - from $ 1446.

Direct flights

There are 3 nonstop flights on the route. The fastest direct flight is AS2676 by Alaska Airlines takes 2h 38m and the cheapest is AA500 by American Airlines for $118.

AS - Alaska Airlines

from $118

Find

See more direct flights

Connecting Flights

There are 156 flights with layovers on the route. The fastest connecting flight is AS240 by Alaska Airlines takes 3h 54m and the cheapest is AA500 by American Airlines for $77.

AA - American Airlines

from $77

Find
AS - Alaska Airlines

from $104

Find
F9 - Frontier Airlines

from $101

Find
WN - Southwest Airlines

from $104

Find
DL - Delta Air Lines Inc.

from $113

Find
UA - United Airlines

from $170

Find
NK - Spirit Airlines

from $181

Find

See more connecting flights

Airports

You can fly from Seattle to Ontario from 3 airports (Boeing Field International Airport, Seattle-Tacoma Intl, Kenmore Air Harbor SPB).

Seattle airports

Boeing Field International Airport-BFI

Find
Seattle-Tacoma Intl-SEA

from $77
Find
Kenmore Air Harbor SPB-LKE

Find

Ontario airports

Ontario Int.-ONT

Find
International Heliport-JIO

Find

Airplanes

There are flights to Ontario from Seattle by 7 airlines that use 10 aircraft brands. They range from huge modern airplanes to small-sized.

Airbus A320

from $77

Find
Airbus A321-100/200

from $78

Find
Boeing 737-800

from $78

Find
Airbus A321

from $78

Find
Embraer 175

from $118

Find
Bombardier DHC-8 Q400

from $122

Find
Boeing 757

from $160

Find
Boeing 737-900

from $162

Find
Embraer 175 (winglets)

from $195

Find
Boeing 737-900 (winglets)

from $275

Find

Top Domestic Destinations from Seattle

You may also consider searching for discounted plane tickets to some other popular places from Seattle within United States.

Seattle — Spokane

from $65

Find
Seattle — Phoenix

from $67

Find
Seattle — Los Angeles

from $53

Find
Seattle — Houston

from $59

Find
Seattle — Charlotte

from $63

Find
Seattle — Miami

from $66

Find
Seattle — Milwaukee

from $75

Find
Seattle — Tucson

from $79

Find
Seattle — Denver

from $243

Find
Seattle — San Antonio

from $54

Find

Top International Destinations from Seattle

Our state-of-the art metasearch will definitely provide you with the best airfare on international flights. We’re proud to partner with many reliable travel suppliers located outside the US what gives us an opportunity to offer the most competitive prices on far destinations.

Seattle — Frankfurt

from $60

Find
Seattle — Sydney

from $56

Find
Seattle — Dublin

from $76

Find
Seattle — London

from $70

Find
Seattle — Berlin

from $67

Find
Seattle — Rome

from $59

Find
Seattle — Manila

from $56

Find
Seattle — Barcelona

from $78

Find
Seattle — Dubai

from $79

Find
Seattle — Venice

from $53

Find

All flights from Seattle | All flights to Ontario

How to book a plane ticket yourself?

Fill in the search parameters — cities of departure and destination, departure and return dates and click «Find flights»
Select the best flight that you like. Please, check the airports of departure and arrival. Select the best fare, but pay attention to the following flight details - airports of departure and arrival, flight duration and layovers. Please use filters and sort to find the best flight.
Click «Buy» when you are ready — our system will redirect you to the site that sells the selected flight ticket.
Fill in all passenger and payment information — passport and contact information, please double check all passengers’ names and make a payment for your itinerary.
That's it — you will receive an email with your e-ticket usually within 10 minutes after your flight is confirmed. Please, print the e-ticket and have it with you at the airport. You would need to have only a passport and/or a required form of ID to travel. Please, check your Visa requirements if you travel outside of the United States or Canada.
To find a plane ticket, please select dates.