Direct (non-stop) flights from Ontario to Seattle

ONT Ontario International Airport

Ontario , CA , USA

SEA Seattle Tacoma International

Seattle , WA , USA

CHANGE DIRECTION

Flight time

3h 05m

Flight distance

962mi, 1548km

Flights from Ontario to Seattle route map

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USA

ONT

Ontario , CA

USA

SEA

Seattle , WA

Distance

962 miles · (1548 km)

CHANGE DIRECTION

Flight time

3 hours and 05 minutes

Airlines with direct flights from Ontario (ONT) to Seattle (SEA)

Alaska Airlines

Oneworld

S

M

T

W

T

F

S

Business available

4–5 daily flights
Frontier Airlines

S

M

T

W

T

F

S

Low-cost airline

1 daily flight
Delta Air Lines

Sky Team

S

M

T

W

T

F

S

First class available

2–3 daily flights

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ONT SEA

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MONTHLY

WEEKLY

Ontario (ONT) to Seattle (SEA) flight schedule

The monthly calendar shows every direct flight departure from Ontario International Airport (ONT) with all airlines. Click on a date to see a list of flights or search for the best prices.

Alaska Airlines

Delta

Frontier

View return flights from SEA to ONT

Alaska Airlines flight schedule from Ontario to Seattle

All weekly departures with Alaska Airlines. The week calendar shows every flight departure from Ontario (ONT) to Seattle (SEA). Click on a blue date to see a list of flights.

Week 28 (Jul 6 - Jul 12)

Week 26 (Jun 22 - Jun 28)
Week 27 (Jun 29 - Jul 5)
Week 28 (Jul 6 - Jul 12)
Week 29 (Jul 13 - Jul 19)
Week 30 (Jul 20 - Jul 26)
Week 31 (Jul 27 - Aug 2)
Week 32 (Aug 3 - Aug 9)
Week 33 (Aug 10 - Aug 16)
Week 34 (Aug 17 - Aug 23)
Week 35 (Aug 24 - Aug 30)
Week 36 (Aug 31 - Sep 6)
Week 37 (Sep 7 - Sep 13)
Week 38 (Sep 14 - Sep 20)
Week 39 (Sep 21 - Sep 27)
Week 40 (Sep 28 - Oct 4)
Week 41 (Oct 5 - Oct 11)
Week 42 (Oct 12 - Oct 18)
Week 43 (Oct 19 - Oct 25)
Week 44 (Oct 26 - Nov 1)
Week 45 (Nov 2 - Nov 8)
Week 46 (Nov 9 - Nov 15)
Week 47 (Nov 16 - Nov 22)
Week 48 (Nov 23 - Nov 29)
Week 49 (Nov 30 - Dec 6)
Week 50 (Dec 7 - Dec 13)
Week 51 (Dec 14 - Dec 20)
Week 52 (Dec 21 - Dec 27)
Week 53 (Dec 28 - Jan 3)
Week 1 (Jan 4 - Jan 10)
Week 2 (Jan 11 - Jan 17)
Week 3 (Jan 18 - Jan 24)
Week 4 (Jan 25 - Jan 31)
Week 5 (Feb 1 - Feb 7)
Week 6 (Feb 8 - Feb 14)
Week 7 (Feb 15 - Feb 21)
Week 8 (Feb 22 - Feb 28)
Week 9 (Mar 1 - Mar 7)
Week 10 (Mar 8 - Mar 14)
Week 11 (Mar 15 - Mar 21)
Week 12 (Mar 22 - Mar 28)
Week 13 (Mar 29 - Apr 4)
Week 14 (Apr 5 - Apr 11)
Week 15 (Apr 12 - Apr 18)
Week 16 (Apr 19 - Apr 25)
Week 17 (Apr 26 - May 2)
Week 18 (May 3 - May 9)
Week 19 (May 10 - May 16)
Week 20 (May 17 - May 23)
Week 21 (May 24 - May 30)
Week 22 (May 31 - Jun 6)
Week 23 (Jun 7 - Jun 13)
Week 24 (Jun 14 - Jun 20)
Week 25 (Jun 21 - Jun 27)

Flight

Mon

Jul 6

Tue

Jul 7

Wed

Jul 8

Thu

Jul 9

Fri

Jul 10

Sat

Jul 11

Sun

Jul 12

AS607

06:02

AS654

12:04

12:08

AS567

14:05

AS575

17:26

17:54

17:26

----

17:26

AS594

21:20

----

21:20

Frontier Airlines flight schedule from Ontario to Seattle

All weekly departures with Frontier Airlines. The week calendar shows every flight departure from Ontario (ONT) to Seattle (SEA). Click on a blue date to see a list of flights.

Week 28 (Jul 6 - Jul 12)

Week 26 (Jun 22 - Jun 28)
Week 27 (Jun 29 - Jul 5)
Week 28 (Jul 6 - Jul 12)
Week 29 (Jul 13 - Jul 19)
Week 30 (Jul 20 - Jul 26)
Week 31 (Jul 27 - Aug 2)
Week 32 (Aug 3 - Aug 9)
Week 33 (Aug 10 - Aug 16)
Week 34 (Aug 17 - Aug 23)
Week 35 (Aug 24 - Aug 30)
Week 36 (Aug 31 - Sep 6)
Week 37 (Sep 7 - Sep 13)
Week 38 (Sep 14 - Sep 20)
Week 39 (Sep 21 - Sep 27)
Week 40 (Sep 28 - Oct 4)
Week 41 (Oct 5 - Oct 11)
Week 42 (Oct 12 - Oct 18)
Week 43 (Oct 19 - Oct 25)
Week 44 (Oct 26 - Nov 1)
Week 45 (Nov 2 - Nov 8)
Week 46 (Nov 9 - Nov 15)
Week 47 (Nov 16 - Nov 22)
Week 48 (Nov 23 - Nov 29)
Week 49 (Nov 30 - Dec 6)
Week 50 (Dec 7 - Dec 13)
Week 51 (Dec 14 - Dec 20)
Week 52 (Dec 21 - Dec 27)
Week 53 (Dec 28 - Jan 3)
Week 1 (Jan 4 - Jan 10)
Week 2 (Jan 11 - Jan 17)
Week 3 (Jan 18 - Jan 24)
Week 4 (Jan 25 - Jan 31)
Week 5 (Feb 1 - Feb 7)
Week 6 (Feb 8 - Feb 14)
Week 7 (Feb 15 - Feb 21)
Week 8 (Feb 22 - Feb 28)
Week 9 (Mar 1 - Mar 7)
Week 10 (Mar 8 - Mar 14)
Week 11 (Mar 15 - Mar 21)
Week 12 (Mar 22 - Mar 28)
Week 13 (Mar 29 - Apr 4)
Week 14 (Apr 5 - Apr 11)
Week 15 (Apr 12 - Apr 18)
Week 16 (Apr 19 - Apr 25)
Week 17 (Apr 26 - May 2)
Week 18 (May 3 - May 9)
Week 19 (May 10 - May 16)
Week 20 (May 17 - May 23)
Week 21 (May 24 - May 30)
Week 22 (May 31 - Jun 6)
Week 23 (Jun 7 - Jun 13)
Week 24 (Jun 14 - Jun 20)
Week 25 (Jun 21 - Jun 27)

Flight

Mon

Jul 6

Tue

Jul 7

Wed

Jul 8

Thu

Jul 9

Fri

Jul 10

Sat

Jul 11

Sun

Jul 12

F92275

16:49

16:09

16:49

16:09

16:49

Delta Air Lines flight schedule from Ontario to Seattle

All weekly departures with Delta Air Lines. The week calendar shows every flight departure from Ontario (ONT) to Seattle (SEA). Click on a blue date to see a list of flights.

Week 28 (Jul 6 - Jul 12)

Week 26 (Jun 22 - Jun 28)
Week 27 (Jun 29 - Jul 5)
Week 28 (Jul 6 - Jul 12)
Week 29 (Jul 13 - Jul 19)
Week 30 (Jul 20 - Jul 26)
Week 31 (Jul 27 - Aug 2)
Week 32 (Aug 3 - Aug 9)
Week 33 (Aug 10 - Aug 16)
Week 34 (Aug 17 - Aug 23)
Week 35 (Aug 24 - Aug 30)
Week 36 (Aug 31 - Sep 6)
Week 37 (Sep 7 - Sep 13)
Week 38 (Sep 14 - Sep 20)
Week 39 (Sep 21 - Sep 27)
Week 40 (Sep 28 - Oct 4)
Week 41 (Oct 5 - Oct 11)
Week 42 (Oct 12 - Oct 18)
Week 43 (Oct 19 - Oct 25)
Week 44 (Oct 26 - Nov 1)
Week 45 (Nov 2 - Nov 8)
Week 46 (Nov 9 - Nov 15)
Week 47 (Nov 16 - Nov 22)
Week 48 (Nov 23 - Nov 29)
Week 49 (Nov 30 - Dec 6)
Week 50 (Dec 7 - Dec 13)
Week 51 (Dec 14 - Dec 20)
Week 52 (Dec 21 - Dec 27)
Week 53 (Dec 28 - Jan 3)
Week 1 (Jan 4 - Jan 10)
Week 2 (Jan 11 - Jan 17)
Week 3 (Jan 18 - Jan 24)
Week 4 (Jan 25 - Jan 31)
Week 5 (Feb 1 - Feb 7)
Week 6 (Feb 8 - Feb 14)
Week 7 (Feb 15 - Feb 21)
Week 8 (Feb 22 - Feb 28)
Week 9 (Mar 1 - Mar 7)
Week 10 (Mar 8 - Mar 14)
Week 11 (Mar 15 - Mar 21)
Week 12 (Mar 22 - Mar 28)
Week 13 (Mar 29 - Apr 4)
Week 14 (Apr 5 - Apr 11)
Week 15 (Apr 12 - Apr 18)
Week 16 (Apr 19 - Apr 25)
Week 17 (Apr 26 - May 2)
Week 18 (May 3 - May 9)
Week 19 (May 10 - May 16)
Week 20 (May 17 - May 23)
Week 21 (May 24 - May 30)
Week 22 (May 31 - Jun 6)
Week 23 (Jun 7 - Jun 13)
Week 24 (Jun 14 - Jun 20)
Week 25 (Jun 21 - Jun 27)

Flight

Mon

Jul 6

Tue

Jul 7

Wed

Jul 8

Thu

Jul 9

Fri

Jul 10

Sat

Jul 11

Sun

Jul 12

DL3816

06:20

DL4070

11:57

11:59

----

11:59

DL4031

17:59

18:01

Flight time

2h 39m - 3h 05m

Earliest flight

06:02

Last flight

17:59

Distance

962 miles (1548 km)

Cheapest month

April

Airlines

3 (Show)

Flights per week

Departing Terminal (ONT)

Terminal 2

Timezone

America/Los_Angeles (UTC-7)

Arriving at Seattle Tacoma (SEA) , Washington

Seattle Tacoma International (SEA) is a large airport in USA. You can fly to 139 destinations with 35 airlines in scheduled passenger traffic.

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Departing from Ontario Airport (ONT) , California

Ontario International Airport (ONT) is a bigger airport in USA. You can fly to 30 destinations with 11 airlines in scheduled passenger traffic.

Show all flights from ONT

Ontario - Seattle flight price statistics

$190

Approximate

The numbers are avarage prices found based on user searches for direct flights between Ontario International Airport and Seattle Tacoma International. Its calculated from the cheapest prices found per month for a round-trip with 1 adult and can vary depending on the amount of data we have for this particular route.

$196
Jan

$438
Feb

$217
Mar

$158
Apr

$158
May

$398
Jun

$311
Jul

$258
Aug

$198
Sep

$198
Oct

$218
Nov

$238
Dec

Approximate prices for one round-trip flight from Ontario (ONT) to Seattle (SEA). Graph is not to scale.

CLICK HERE FOR EXACT PRICES

Type of aircraft(s) on this route

Below is a list of aircraft types we have within our database with flights on this route. You can also see the aircrafts seat capacity together with classes.

Boeing 737MAX 9 Passenger

Alaska Airlines

178 seats

(16 first class)

Boeing 737MAX 8 Passenger

Alaska Airlines

160 seats

(15 first class)

Boeing 737-800 (winglets) Passenger/BBJ2

Alaska Airlines

160 seats

Boeing 737-900 (winglets) Passenger/BBJ3

Alaska Airlines

165 seats

(15 first class)

Boeing 737-700 Passenger

Alaska Airlines

124 seats

(12 first class)

Airbus A321neo

Frontier Airlines

240 seats

(All economy)

Embraer 175 (Enhanced Winglets)

Delta Air Lines

73 seats

(12 first class)

ROUTE EXPLORING

Ontario International Airport - all destinations

With FlightsFrom.com’s brilliant search features you can explore all non-stop flights from a specific airport. Simply select your preferred airport to get an overview of every single non-stop flight offered. Click on one of the routes to get information about which airline’s operate the route, when the next scheduled flight is or to filter your search even more.

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Frequently asked questions FAQ

How long does a flight from Ontario (ONT) to Seattle (SEA) take?

The flight between Ontario (ONT) and Seattle (SEA) typically takes about 2 hour and 42 minute.
How many flights per day are there on this route?

There are 6 direct flights every day.
What are the flight numbers on the route Ontario to Seattle?

The flight numbers are AS516, AS532, AS567, AS571, AS575, AS592, AS594, AS607 together with 13 additional flights.
What aircraft types are flying on this route?

Alaska Airlines, Frontier, and Delta all flyes the Embraer 19X/17X on this route.
How many airlines fly non-stop from Ontario (ONT) to Seattle (SEA)?

Three airlines. Alaska Airlines, Frontier and Delta have non-stop flights to Seattle.
What terminal on ONT does the flights to SEA depart from?

They will depart from terminal 2.

VIEW IN
MAP EXPLORER Flights from Ontario to Seattle route map

Non-stop flights from ONT to SEA

962 miles (1548 km) · 3 hours and 05 minutes

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Popular routes from Ontario

Alaska Airlines routes

Ontario (ONT) - Portland (PDX)

Ontario (ONT) - Honolulu (HNL)

Ontario (ONT) - Boise (BOI)

Ontario (ONT) - Santa Rosa (STS)

For more destinations from Ontario with Alaska Airlines (AS), check out the Alaska Airlines route map .

Frontier Airlines routes

Ontario (ONT) - Las Vegas (LAS)

Ontario (ONT) - Denver (DEN)

Ontario (ONT) - Dallas (DFW)

Ontario (ONT) - San Francisco (SFO)

Ontario (ONT) - Houston (IAH)

For more destinations from Ontario with Frontier Airlines (F9), check out the Frontier Airlines route map .

Delta Air Lines routes

Ontario (ONT) - Salt Lake City (SLC)

Ontario (ONT) - Atlanta (ATL)

For more destinations from Ontario with Delta Air Lines (DL), check out the Delta Air Lines route map .

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Airlines with direct flights from Ontario (ONT) to Seattle (SEA)

Ontario (ONT) to Seattle (SEA) flight schedule

Alaska Airlines flight schedule from Ontario to Seattle

Frontier Airlines flight schedule from Ontario to Seattle

Delta Air Lines flight schedule from Ontario to Seattle

Arriving at Seattle Tacoma (SEA) , Washington

Departing from Ontario Airport (ONT) , California