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Cheap flights Ontario to Seattle (Tacoma)

1 passenger, economy

Nonstop flights from Ontario to Seattle: Alaska Airlines, Frontier Airlines. Nonstop flights per week: 5. Flight time: 3 hours 2 minutes. Distance: 1539 km. Tickets from $83 (departure 27 October).

Prices updated on 26 October at 11:04

See also: Seattle (Tacoma) — OntarioFlights from OntarioFlights to Seattle (Tacoma)

Cheap flights Ontario to Seattle

Compare prices, duration and stops

Alaska Airlines
AS 475 🔥 Hot deal Best price
11:13
Ontario (ONT)
Tue, 27 Oct
2h 43min
Direct
13:56
Tacoma (SEA)
Tue, 27 Oct
$83
Frontier Airlines
F9 1500 🔥 Hot deal
06:25
Ontario (ONT)
Sat, 31 Oct
8h 47min
Direct
15:12
Tacoma (SEA)
Sat, 31 Oct
$128
Frontier Airlines
F9 1500
06:30
Ontario (ONT)
Sat, 14 Nov
8h 42min
1 stop
15:12
Tacoma (SEA)
Sat, 14 Nov
$110
Frontier Airlines
F9 2275
04:06
Ontario (ONT)
Fri, 20 Nov
3h 2min
Direct
07:08
Tacoma (SEA)
Fri, 20 Nov
$115
Frontier Airlines
F9 2275
17:00
Ontario (ONT)
Sun, 29 Nov
3h 3min
Direct
20:03
Tacoma (SEA)
Sun, 29 Nov
$220
Alaska Airlines
AS 677 🔥 Hot deal
11:36
Ontario (ONT)
Tue, 2 Feb
2h 50min
Direct
14:26
Tacoma (SEA)
Tue, 2 Feb
$93

Direct flight schedule Ontario — Seattle

Direct flights: 1

Departure → arrivalFlightAirport DaysDurationPrice
04:06→07:08 Frontier Airlines F9 2275 OntarioONT MonTueWedThuFriSatSun 3h 2min
Local time: departure at the departure airport, arrival at the arrival airport. Days and prices are based on tickets found for the coming months.

Low price calendar

From
To
October 2026 — no data Mon, 26 Oct · One way

Prices as of 26 October, 11:04 Moscow time

Cheap flights Ontario to Seattle

Frontier Airlines
Frontier Airlines
Fri, Sat, Sun
Price from
$110

Round trip Ontario — Seattle

TripOutboundReturnOutbound + returnTotal
Weekend tripSat, 14 NovSun, 15 Nov $110 + $146
One weekSat, 14 NovSat, 21 Nov $110 + $90

Two one-way tickets combined, price per adult. Tap a price to search these dates.

Prices as of 26 October, 11:04 Moscow time

Popular destinations from Ontario

All →
ONT
Ontario — San Francisco
United States → United States
SFO
from
$18
ONT
Ontario — Denver
United States → United States
DEN
from
$33
ONT
Ontario — Oakland
United States → United States
OAK
from
$70
ONT
Ontario — Nashville
United States → United States
BNA
from
$75
ONT
Ontario — San Antonio
United States → United States
SAT
from
$98
ONT
Ontario — San Jose
United States → United States
SJC
from
$101
ONT
Ontario — Boise
United States → United States
BOI
from
$112
ONT
Ontario — Kansas City
United States → United States
MCI
from
$115

Popular destinations to Seattle

All →
SFO
San Francisco — Seattle
United States → United States
SEA
from
$57
SAN
San Diego — Seattle
United States → United States
SEA
from
$67
LAX
Los Angeles — Seattle
United States → United States
SEA
from
$75
OAK
Oakland — Seattle
United States → United States
SEA
from
$77
LAS
Las Vegas — Seattle
United States → United States
SEA
from
$83
PHX
Phoenix — Seattle
United States → United States
SEA
from
$92
SLC
Salt Lake City — Seattle
United States → United States
SEA
from
$99
FAT
Fresno — Seattle
United States → United States
SEA
from
$105
DEN
Denver — Seattle
United States → United States
SEA
from
$106

Cheap flights Ontario to Seattle

Price from
$110
Average price
$113
Flight time
3 hours 2 minutes
Distance
1 539 km
Рейсов в неделю
5
Airlines
2
Most frequent flight
F9 1500

Prices as of 26 October, 11:04 Moscow time

Airports on the Ontario — Seattle route

From → to Flights Direct Airlines Price from
OntarioONT TacomaSEA
442

Departure airports · Ontario

  • OntarioONT

Arrival airports · Seattle

Passenger reviews

No reviews for this route yet

Internet abroad

eSIM · United States

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Frequently Asked Questions

Yes. Nonstop flights from Ontario to Seattle are operated by: Alaska Airlines, Frontier Airlines. A nonstop flight takes 3 hours 2 minutes on average. Nonstop tickets start at $83.
The average ticket price Ontario Seattle is $113. The cheapest ticket costs $83, operated by Alaska Airlines, flight AS 475, departing Ontario on 27 October at 11:13, arriving Seattle on 27 October at 13:56. Prices as of 26 October.
A nonstop flight takes 3 hours 2 minutes on average. The fastest is AS 475 Alaska Airlines: 2 hours 43 minutes. With a connection: from 8 hours 42 minutes, usually about 9 hours.
Tickets from Ontario to Seattle are sold by: Alaska Airlines, Frontier Airlines. All of them fly nonstop.
The distance from Ontario to Seattle is 1539 km.
Tickets from Seattle to Ontario start at $36. The average price is $142. Nonstop flights are operated by: Frontier Airlines. All tickets Seattle — Ontario