Cheap Flights from Ontario, CA to Seattle, WA from $68

One way Round trip

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On Cheapflightsplus.com you will find 7 direct and 175 connecting flights from Ontario to Seattle. You can compare airfare deals from 7 airlines and multiple travel sites from $68, book and save on cheap plane tickets and last minute offers. Also check out ONT-SEA flight schedule to find best flight time, convenient departure and arrival airports.

Find One-Way and Round-Trip Ontario to Seattle 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: $68 (one-way), $117 (round-trip).

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Best Flights from Ontario to Seattle Today

Take a look at the list of non stop flights and flights with layovers from Ontario to Seattle with the lowest price of $68. The fastest direct flight takes 2h 45m and the fastest connecting – 4h.

Price	Departure	Arrival	Flight Duration	Airline	Flight
from $116 Find flight	07:00 Ontario Ontario Int.	09:49 Seattle Seattle-Tacoma Intl	2h 49m	Alaska Airlines	AS2885
from $137 Find flight	07:00 Ontario Ontario Int.	09:48 Seattle Seattle-Tacoma Intl	2h 48m	Alaska Airlines	AS615
from $137 Find flight	14:00 Ontario Ontario Int.	16:45 Seattle Seattle-Tacoma Intl	2h 45m	Alaska Airlines	AS423
from $137 Find flight	17:50 Ontario Ontario Int.	20:35 Seattle Seattle-Tacoma Intl	2h 45m	Alaska Airlines	AS619
from $148 Find flight	16:45 Ontario Ontario Int.	19:34 Seattle Seattle-Tacoma Intl	2h 49m	Alaska Airlines	AS2677
from $159 Find flight	11:43 Ontario Ontario Int.	14:28 Seattle Seattle-Tacoma Intl	2h 45m	Delta Air Lines Inc.	DL3673
from $169 Find flight	12:30 Ontario Ontario Int.	15:19 Seattle Seattle-Tacoma Intl	2h 49m	Alaska Airlines	AS2347
from $68 Find flight	14:38 Ontario Ontario Int.	22:42 Seattle Seattle-Tacoma Intl	8h 4m layover 0h 51m - Dallas	American Airlines	AA1086 AA228
from $68 Find flight	08:30 Ontario Ontario Int.	17:13 Seattle Seattle-Tacoma Intl	8h 43m layover 1h 34m - Dallas	American Airlines	AA1224 AA368
from $78 Find flight	06:30 Ontario Ontario Int.	14:40 Seattle Seattle-Tacoma Intl	8h 10m layover 0h 57m - Dallas	American Airlines	AA1412 AA2240
from $82 Find flight	20:20 Ontario Ontario Int.	00:51+1 день Seattle Seattle-Tacoma Intl	4h 31m layover 1h 4m - San Francisco	United Airlines	UA5366 UA351
from $85 Find flight	13:40 Ontario Ontario Int.	18:13 Seattle Seattle-Tacoma Intl	4h 33m layover 0h 55m - Salt Lake City	Delta Air Lines Inc.	DL1389 DL2006
from $85 Find flight	14:05 Ontario Ontario Int.	20:24 Seattle Seattle-Tacoma Intl	6h 19m layover 2h 8m - Phoenix	American Airlines	AA604 AA578

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*Departure and arrival times - local. Prices indicated for one-way flights. Information updated on May 04, 2024

Flight Schedule Ontario (California) to Seattle (Washington)

Full flight schedule will help you in detecting at what time planes fly from Ontario to Seattle. 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
07:00 — 09:49	07:00 — 09:49 AS2885 Alaska Airlines Ontario — Seattle	2h 49m	Find flight from$116
07:00 — 09:48	07:00 — 09:48 AS615 Alaska Airlines Ontario — Seattle	2h 48m	Find flight from$137
11:43 — 14:28	11:43 — 14:28 DL3673 Delta Air Lines Inc. Ontario — Seattle	2h 45m	Find flight from$159
12:30 — 15:19	12:30 — 15:19 AS2347 Alaska Airlines Ontario — Seattle	2h 49m	Find flight from$169
14:00 — 16:45	14:00 — 16:45 AS423 Alaska Airlines Ontario — Seattle	2h 45m	Find flight from$137
16:45 — 19:34	16:45 — 19:34 AS2677 Alaska Airlines Ontario — Seattle	2h 49m	Find flight from$148
17:50 — 20:35	17:50 — 20:35 AS619 Alaska Airlines Ontario — Seattle	2h 45m	Find flight from$137
00:29 — 11:06	00:29 — 05:24 AA2797 American Airlines Ontario — Dallas 3h 24m stop 08:48 — 11:06 AA1079 American Airlines Dallas — Seattle	10h 37m including layover	Find flight from$78
06:30 — 14:40	06:30 — 11:29 AA1412 American Airlines Ontario — Dallas 57m stop 12:26 — 14:40 AA2240 American Airlines Dallas — Seattle	8h 10m including layover	Find flight from$78
06:45 — 13:00	06:45 — 08:00 AA5801 American Airlines Ontario — Phoenix 1h 56m stop 09:56 — 13:00 AA710 American Airlines Phoenix — Seattle	6h 15m including layover	Find flight from$92
08:30 — 17:13	08:30 — 13:26 AA1224 American Airlines Ontario — Dallas 1h 34m stop 15:00 — 17:13 AA368 American Airlines Dallas — Seattle	8h 43m including layover	Find flight from$68
08:30 — 19:00	08:30 — 13:26 AA1224 American Airlines Ontario — Dallas 3h 19m stop 16:45 — 19:00 AA2009 American Airlines Dallas — Seattle	10h 30m including layover	Find flight from$68
09:05 — 14:15	09:05 — 10:25 WN1762 Southwest Airlines Ontario — Sacramento 1h 50m stop 12:15 — 14:15 WN1128 Southwest Airlines Sacramento — Seattle	5h 10m including layover	Find flight from$92
10:49 — 19:00	10:49 — 15:45 AA1472 American Airlines Ontario — Dallas 1h stop 16:45 — 19:00 AA2009 American Airlines Dallas — Seattle	8h 11m including layover	Find flight from$85
10:49 — 21:25	10:49 — 15:45 AA1472 American Airlines Ontario — Dallas 3h 25m stop 19:10 — 21:25 AA1241 American Airlines Dallas — Seattle	10h 36m including layover	Find flight from$85
11:15 — 17:40	11:15 — 12:25 WN1368 Southwest Airlines Ontario — Phoenix 2h 15m stop 14:40 — 17:40 WN1565 Southwest Airlines Phoenix — Seattle	6h 25m including layover	Find flight from$108
12:43 — 21:25	12:43 — 17:40 AA2945 American Airlines Ontario — Dallas 1h 30m stop 19:10 — 21:25 AA1241 American Airlines Dallas — Seattle	8h 42m including layover	Find flight from$107
12:43 — 22:42	12:43 — 17:40 AA2945 American Airlines Ontario — Dallas 2h 50m stop 20:30 — 22:42 AA228 American Airlines Dallas — Seattle	9h 59m including layover	Find flight from$107
13:40 — 18:13	13:40 — 16:19 DL1389 Delta Air Lines Inc. Ontario — Salt Lake City 55m stop 17:14 — 18:13 DL2006 Delta Air Lines Inc. Salt Lake City — Seattle	4h 33m including layover	Find flight from$85
13:40 — 22:23	13:40 — 16:19 DL1389 Delta Air Lines Inc. Ontario — Salt Lake City 4h 56m stop 21:15 — 22:23 DL1308 Delta Air Lines Inc. Salt Lake City — Seattle	8h 43m including layover	Find flight from$90
14:20 — 22:54	14:20 — 19:23 AA1086 American Airlines Ontario — Dallas 1h 17m stop 20:40 — 22:54 AA2781 American Airlines Dallas — Seattle	8h 34m including layover	Find flight from$78
14:38 — 22:42	14:38 — 19:39 AA1086 American Airlines Ontario — Dallas 51m stop 20:30 — 22:42 AA228 American Airlines Dallas — Seattle	8h 4m including layover	Find flight from$68
15:00 — 21:40	15:00 — 18:10 WN1369 Southwest Airlines Ontario — Denver 1h 35m stop 19:45 — 21:40 WN478 Southwest Airlines Denver — Seattle	6h 40m including layover	Find flight from$92
15:45 — 20:35	15:45 — 17:07 UA5500 United Airlines Ontario — San Francisco 1h 18m stop 18:25 — 20:35 UA1833 United Airlines San Francisco — Seattle	4h 50m including layover	Find flight from$107
16:26 — 00:01 +1 day	16:26 — 19:48 F9372 Frontier Airlines Ontario — Denver 2h 13m stop 22:01 — 00:01 F9143 Frontier Airlines Denver — Seattle	7h 35m including layover	Find flight from$95
16:55 — 22:05	16:55 — 18:10 WN1491 Southwest Airlines Ontario — Phoenix 55m stop 19:05 — 22:05 WN1383 Southwest Airlines Phoenix — Seattle	5h 10m including layover	Find flight from$92
17:55 — 22:05	17:55 — 19:15 WN246 Southwest Airlines Ontario — Oakland 45m stop 20:00 — 22:05 WN1231 Southwest Airlines Oakland — Seattle	4h 10m including layover	Find flight from$101
18:04 — 13:01 +1 day	18:04 — 21:26 F9370 Frontier Airlines Ontario — Denver 13h 33m stop 10:59 — 13:01 F9145 Frontier Airlines Denver — Seattle	18h 57m including layover	Find flight from$85
18:17 — 00:01 +2 days	18:17 — 21:39 F9370 Frontier Airlines Ontario — Denver 24h 22m stop 22:01 — 00:01 F9143 Frontier Airlines Denver — Seattle	29h 44m including layover	Find flight from$85
20:20 — 00:51 +1 day	20:20 — 21:43 UA5366 United Airlines Ontario — San Francisco 1h 4m stop 22:47 — 00:51 UA351 United Airlines San Francisco — Seattle	4h 31m including layover	Find flight from$82
05:41 — 15:14	05:41 — 09:05 UA1475 United Airlines Ontario — Denver 1h stop 10:05 — 11:40 UA1068 United Airlines Denver — San Francisco 1h 20m stop 13:00 — 15:14 UA1007 United Airlines San Francisco — Seattle	9h 33m including layover	Find flight from$120
05:41 — 17:20	05:41 — 09:05 UA1475 United Airlines Ontario — Denver 1h stop 10:05 — 11:40 UA1068 United Airlines Denver — San Francisco 3h 20m stop 15:00 — 17:20 UA5351 United Airlines San Francisco — Seattle	11h 39m including layover	Find flight from$120
07:30 — 16:37	07:30 — 09:46 AA5760 American Airlines Ontario — Phoenix 51m stop 10:37 — 12:39 AA2511 American Airlines Phoenix — Denver 1h 56m stop 14:35 — 16:37 DL3562 Delta Air Lines Inc. Denver — Seattle	9h 7m including layover	Find flight from$116

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

*Departure and arrival times - local. Updated on May 4, 2024

Flight Information

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

Distance between Ontario and Seattle is 1540 miles. Time difference between the cities is 0h. Airplanes depart 00:29 to 23:59 from 2 Ontario airports and arrive 00:29 to 23:59 to 3 Seattle airports. Average flight time is 2h 48m.

The fastest flight 2h 45m
Average flight time 2h 48m
The earliest flight 00:29
The latest flight 23:59
Distance 957 ml

What is the lowest airfare Ontario to Seattle?

The cheapest plane ticket found by our users is $68. This airfare is for economy class on one-way AA1224 flight by American Airlines for August 27, 2020 which leaves Ontario Int. in Ontario at 08:30 am and arrives at Seattle Seattle-Tacoma Intl at 19:00.

Economy class

$68

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Business class

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First class

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Popular Airlines on the Route

The flight Ontario — Seattle is served by 7 regular airlines and 3 low-cost airlines. Most of the flights on this route are operated by American Airlines - 44 departures per week at the price of from $ 68 . And the most expensive tickets are offered by Delta Air Lines Inc. airline - from $ 556.

Direct flights

There are 7 nonstop flights on the route. The fastest direct flight is AS423 by Alaska Airlines takes 2h 45m and the cheapest is AA1224 by American Airlines for $116.

AS - Alaska Airlines

from $116

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DL - Delta Air Lines Inc.

from $159

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Connecting Flights

There are 175 flights with layovers on the route. The fastest connecting flight is WN4875 by Southwest Airlines takes 4h and the cheapest is AA1224 by American Airlines for $68.

AA - American Airlines

from $68

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AS - Alaska Airlines

from $162

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F9 - Frontier Airlines

from $85

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WN - Southwest Airlines

from $92

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DL - Delta Air Lines Inc.

from $85

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UA - United Airlines

from $82

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Y4 - Volaris

from $162

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Airports

You can fly from Ontario to Seattle from 2 airports (Ontario Int., International Heliport).

Ontario airports

Ontario Int.-ONT

from $68
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International Heliport-JIO

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Seattle airports

Boeing Field International Airport-BFI

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Seattle-Tacoma Intl-SEA

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Kenmore Air Harbor SPB-LKE

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Airplanes

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

Boeing 737-800

from $68

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Airbus A321-100/200

from $78

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Canadair CRJ

from $82

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Airbus A321

from $85

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Airbus A320

from $85

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Airbus A319

from $85

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Canadair Regional Jet 900

from $92

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Canadair Regional Jet

from $107

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Embraer 175

from $116

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Boeing 737-900

from $120

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Top Domestic Destinations from Ontario

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

Ontario — Tampa

from $54

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Ontario — Pittsburgh

from $70

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Ontario — Indianapolis

from $62

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Ontario — Cleveland

from $63

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Ontario — Norfolk

from $79

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Ontario — Tucson

from $80

Find
Ontario — New Orleans

from $63

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Ontario — San Jose

from $61

Find
Ontario — Honolulu

from $63

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Ontario — Austin

from $67

Find

Top International Destinations from Ontario

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.

Ontario — San Jose

from $61

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Ontario — Guadalajara

from $70

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Ontario — Mexico City

from $58

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Ontario — Cancun

from $74

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Ontario — Toronto

from $70

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Ontario — London

from $62

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Ontario — Vancouver

from $61

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All flights from Ontario | All flights to Seattle

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»
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