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Low fare calendar for flights from Ontario (ONT) to Seattle (SEA)

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Saturday
1
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$314 Price subject to changes
Viewed:9 hours ago
Return:
2
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$254 Price subject to changes
Viewed:a day ago
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3
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$290 Price subject to changes
Viewed:9 hours ago
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4
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$254 Price subject to changes
Viewed:a day ago
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5
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$294 Price subject to changes
Viewed:a day ago
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6
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$254 Price subject to changes
Viewed:a day ago
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7
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$206 Price subject to changes
Viewed:a day ago
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8
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$246 Price subject to changes
Viewed:9 hours ago
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9
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$206 Price subject to changes
Viewed:a day ago
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10
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$242 Price subject to changes
Viewed:9 hours ago
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11
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$206 Price subject to changes
Viewed:a day ago
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12
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$246 Price subject to changes
Viewed:9 hours ago
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13
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$206 Price subject to changes
Viewed:a day ago
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14
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$236 Price subject to changes
Viewed:a day ago
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15
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$236 Price subject to changes
Viewed:a day ago
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16
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$274 Price subject to changes
Viewed:9 hours ago
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17
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$236 Price subject to changes
Viewed:9 hours ago
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18
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$166 Price subject to changes
Viewed:a day ago
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19
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$166 Price subject to changes
Viewed:a day ago
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20
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$166 Price subject to changes
Viewed:a day ago
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21
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$202 Price subject to changes
Viewed:a day ago
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22
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$166 Price subject to changes
Viewed:a day ago
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23
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$166 Price subject to changes
Viewed:9 hours ago
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24
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$236 Price subject to changes
Viewed:a day ago
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25
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$236 Price subject to changes
Viewed:a day ago
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26
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$274 Price subject to changes
Viewed:a day ago
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27
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$274 Price subject to changes
Viewed:a day ago
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28
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$312 Price subject to changes
Viewed:a day ago
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29
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$448 Price subject to changes
Viewed:a day ago
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30
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$354 Price subject to changes
Viewed:a day ago
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from
$166 Price subject to changes
Viewed:a day ago
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from
$166 Price subject to changes
Viewed:a day ago
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from
$166 Price subject to changes
Viewed:a day ago
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from
$166 Price subject to changes
Viewed:a day ago
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$166 Price subject to changes
Viewed:a day ago
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Lowest PriceToday
*Prices have been available for round trips within the last 48 hours and may not be currently available. For Economy class, fares listed may be Basic Economy, which is our most restrictive fare option and subject to additional restrictions. Additional baggage charges and fees for other optional service may apply. Other terms and conditions may apply.

More United deals on Ontario (ONT) to Seattle (SEA) flights

FromToDatesFare TypePrice

Ontario (ONT)

Seattle (SEA)

Depart: 12/11/20

Return: 12/15/20

Roundtrip
from
$158*
Viewed:1dayago

Ontario (ONT)

Seattle (SEA)

Depart: 12/17/20

Return: 01/06/21

Roundtrip
from
$158*
Viewed:1dayago

Ontario (ONT)

Seattle (SEA)

Depart: 12/24/20

Return: 01/07/21

Roundtrip
from
$166*
Viewed:23hoursago

Ontario (ONT)

Seattle (SEA)

Depart: 12/25/20

Return: 01/08/21

Roundtrip
from
$166*
Viewed:23hoursago

Ontario (ONT)

Seattle (SEA)

Depart: 12/31/20

Return: 01/14/21

Roundtrip
from
$166*
Viewed:23hoursago

Ontario (ONT)

Seattle (SEA)

Depart: 01/01/21

Return: 01/15/21

Roundtrip
from
$166*
Viewed:23hoursago

Ontario (ONT)

Seattle (SEA)

Depart: 01/05/21

Return: 01/19/21

Roundtrip
from
$166*
Viewed:23hoursago

Ontario (ONT)

Seattle (SEA)

Depart: 01/06/21

Return: 01/20/21

Roundtrip
from
$166*
Viewed:23hoursago

Ontario (ONT)

Seattle (SEA)

Depart: 01/07/21

Return: 01/21/21

Roundtrip
from
$166*
Viewed:23hoursago

Ontario (ONT)

Seattle (SEA)

Depart: 01/08/21

Return: 01/22/21

Roundtrip
from
$166*
Viewed:23hoursago

*Prices have been available for round trips within the last 48 hours and may not be currently available. For Economy class, fares listed may be Basic Economy, which is our most restrictive fare option and subject to additional restrictions. Additional baggage charges and fees for other optional service may apply. Other terms and conditions may apply.

Weather in Seattle

Saturday light rain
44°F 10/24/20
Sunday sky is clear
41°F 10/25/20
Monday overcast clouds
42°F 10/26/20
Tuesday sky is clear
46°F 10/27/20
Wednesday broken clouds
53°F 10/28/20
Thursday sky is clear
54°F 10/29/20
Friday overcast clouds
53°F 10/30/20
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