$149 Cheap United flights Portland (PDX) to Ontario Intl. Airport (ONT)

View $149 flight on Tue, Jun 2, 2026Opens in a new window

$149 Cheap United flights Portland (PDX) to Ontario Intl. Airport (ONT)

Prices were available within the past 7 days and start at $149 for one-way flights and $262 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Tue, Jun 2 - Tue, Jun 16
PDX
Portland
ONT
Ontario
$262 Roundtrip, found 5 hours ago
$262
Roundtrip
found 5 hours ago
Select United flight, departing Tue, Jun 2 from Portland to Ontario, returning Tue, Jun 16, priced at $262 found 5 hours ago
United
Tue, Jun 2 - Tue, Jun 16
PDX
Portland
ONT
Ontario
$294 Roundtrip, found 5 hours ago
$294
Roundtrip
found 5 hours ago
Select United flight, departing Tue, Jun 2 from Portland to Ontario, returning Tue, Jun 16, priced at $294 found 5 hours ago

Alternative airports near Ontario

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Los Angeles - Ontario Intl. ONT. Cheapest and Closest option available. Average driving time to city center is 8 minutes. Flights from $215
ONT
Los Angeles - Ontario Intl.
CheapestClosest
Average driving time to city center8 min
Flights from $215

Find the cheapest month to fly from Portland (PDX) to Ontario (ONT)

April is typically the cheapest month to fly

From $140 - $196 per traveler.

Travel information

Origin airport
Portland Intl.
Destination airport
Ontario Intl. Airport
Airlines serving
Alaska Airlines, American Airlines, Delta, Frontier Airlines, Southwest Airlines, United
Popular airline
Frontier Airlines
Distance
1342 km
Average flight time
2 hours 30 mins

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