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Cheap flights Seattle (Tacoma) to Ontario

1 passenger, economy

Cheap flights Seattle to Ontario

Compare prices, duration and stops

Frontier Airlines
F9 2276 🔥 Hot deal
18:54
Seattle, Tacoma (SEA)
Sun, 6 sep
2h 51min
Direct
21:45
Ontario (ONT)
Sun, 6 sep
137 NZ$
Frontier Airlines
F9 2276 🔥 Hot deal
17:53
Seattle, Tacoma (SEA)
Wed, 9 sep
2h 52min
Direct
20:45
Ontario (ONT)
Wed, 9 sep
106 NZ$
Frontier Airlines
F9 2276
17:53
Seattle, Tacoma (SEA)
Thu, 10 sep
2h 52min
Direct
20:45
Ontario (ONT)
Thu, 10 sep
137 NZ$
Frontier Airlines
F9 2276
17:53
Seattle, Tacoma (SEA)
Fri, 11 sep
2h 52min
Direct
20:45
Ontario (ONT)
Fri, 11 sep
268 NZ$
Frontier Airlines
F9 2276 🔥 Hot deal
17:53
Seattle, Tacoma (SEA)
Sat, 12 sep
2h 52min
Direct
20:45
Ontario (ONT)
Sat, 12 sep
106 NZ$
Frontier Airlines
F9 2276 🔥 Hot deal
17:53
Seattle, Tacoma (SEA)
Mon, 14 sep
2h 52min
Direct
20:45
Ontario (ONT)
Mon, 14 sep
83 NZ$
Frontier Airlines
F9 3406
23:27
Seattle, Tacoma (SEA)
Tue, 15 sep
7h 20min
1 stop
06:47
Ontario (ONT)
Wed, 16 sep +1
245 NZ$
Frontier Airlines
F9 2276 🔥 Hot deal
17:53
Seattle, Tacoma (SEA)
Thu, 24 sep
2h 52min
Direct
20:45
Ontario (ONT)
Thu, 24 sep
95 NZ$
Frontier Airlines
F9 2276 🔥 Hot deal Best price
18:50
Seattle, Tacoma (SEA)
Mon, 9 nov
2h 48min
Direct
21:38
Ontario (ONT)
Mon, 9 nov
57 NZ$

Low price calendar

September 2026
Price chart (September 2026)
min: 95 NZ$ · max: 268 NZ$
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106 NZ$
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245 NZ$
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95 NZ$
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Cheap flights Seattle to Ontario

Frontier Airlines
Frontier Airlines
Mon, Tue, Wed, Thu, Fri, Sat, Sun
Price from
NZ$106

Popular destinations from Seattle

All →
SEA
Seattle — Las Vegas
United States → United States
LAS
from
NZ$35
SEA
Seattle — Los Angeles
United States → United States
LAX
from
NZ$38
SEA
Seattle — Denver
United States → United States
DEN
from
NZ$42
SEA
Seattle — San Jose
United States → United States
SJC
from
NZ$71
SEA
Seattle — San Francisco
United States → United States
SFO
from
NZ$76
SEA
Seattle — Oakland
United States → United States
OAK
from
NZ$76
SEA
Seattle — Phoenix
United States → United States
PHX
from
NZ$83
SEA
Seattle — San Diego
United States → United States
SAN
from
NZ$88

Popular destinations to Ontario

All →
LAS
Las Vegas — Ontario
United States → United States
ONT
from
NZ$35
SFO
San Francisco — Ontario
United States → United States
ONT
from
NZ$35
HOU
Houston — Ontario
United States → United States
ONT
from
NZ$62
DEN
Denver — Ontario
United States → United States
ONT
from
NZ$66
DFW
Dallas — Ontario
United States → United States
ONT
from
NZ$91
SJC
San Jose — Ontario
United States → United States
ONT
from
NZ$91
NYC
New York — Ontario
United States → United States
ONT
from
NZ$121
ATL
Atlanta — Ontario
United States → United States
ONT
from
NZ$130

Cheap flights Seattle to Ontario

Interesting facts about the route

Flight time

2h 52min

Distance

1 539 km

Average price

NZ$121

Most frequent flight

F9 2276

Passenger reviews

No reviews for this route yet

Internet abroad

eSIM · United States

All plans

change

3 GB

data

30

days

NZ$15

Buy

change

2 GB

data

15

days

NZ$21

Buy

change

5 GB

data

30

days

NZ$24

Buy

change

3 GB

data

30

days

NZ$27

Buy

change

5 GB

data

30

days

NZ$38

Buy

Frequently Asked Questions

The average ticket price Seattle Ontario is NZ$121. Check flight options below for current prices.
The average flight time is 2 hours 52 minutes.
Flights on the Seattle - Ontario route are operated by the following airlines: Frontier Airlines.
The distance from Seattle to Ontario is 1539 km.