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PWM - ONT

$180 Find Cheap Flights from Portland to Ontario - Compare and Save

1 adult
1 adult, Economy, 0 bags

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Everything you should know

Cheapest round-trip
$364
Typical prices: $369-$593
Delta
Wed 11/7Wed 11/14
PWM - ONT • 2 stops
Cheapest one-way
$180
Typical prices: $237-$389
American Airlines
Tue 10/23
PWM - ONT • 1 stop
Nonstop flights
Not available
There are currently no direct flights between Portland and Ontario. You'll need to take a connecting flight to reach the destination.
Insights
Insights
When to travel
February
Cheapest • 26% price drop
January
Most popular
Good to know
+1
Good to know
+1
Top layover airports
Dallas/Fort Worth (DFW)
Cheapest • Avg $364 (round-trip)
Denver Intl (DEN)
Shortest trip • 7h 56m (one-way)
Insights
Insights
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Flight Deals

Cheap Flights from Portland to Ontario (PWM-ONT)

 
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Portland to Ontario

Sat, Nov 7 - Sat, Nov 14
Delta Logo
1:10 pm - 10:43 pmPWM  Portland-ONT Ontario
12h 33m2 stops Detroit Metropolitan Wayne County Seattle/Tacoma Intl
Delta Logo
12:18 pm - 11:31 pmONT  Ontario-PWM Portland
8h 13m1 stop Atlanta Hartsfield-Jackson
$364Delta
Sat, Nov 7 - Sat, Nov 14
Delta Logo
2:09 pm - 7:30 pmPWM  Portland-ONT Ontario
8h 21m1 stop Atlanta Hartsfield-Jackson
Delta Logo
12:18 pm - 11:31 pmONT  Ontario-PWM Portland
8h 13m1 stop Atlanta Hartsfield-Jackson
$409Delta
Sat, Nov 7 - Sat, Nov 14
Delta Logo
1:10 pm - 10:43 pmPWM  Portland-ONT Ontario
12h 33m2 stops Detroit Metropolitan Wayne County Seattle/Tacoma Intl
Delta Logo
12:18 pm - 11:31 pmONT  Ontario-PWM Portland
8h 13m1 stop Atlanta Hartsfield-Jackson
$414Delta
Fri, Oct 16 - Wed, Oct 21
Delta Logo
2:09 pm - 10:09 pmPWM  Portland-ONT Ontario
11h 00m1 stop Atlanta Hartsfield-Jackson
Delta Logo
9:45 am - 12:10 amONT  Ontario-PWM Portland
11h 25m2 stops Salt Lake City New York John F Kennedy Intl
$415Delta
Fri, Nov 20 - Sat, Nov 21
Southwest Logo
5:20 am - 2:05 pmPWM  Portland-ONT Ontario
11h 45m2 stops Baltimore/Washington Denver Intl
Southwest Logo
6:45 pm - 10:30 amONT  Ontario-PWM Portland
12h 45m2 stops Phoenix Sky Harbor Intl Baltimore/Washington
$417Southwest
Mon, Jan 25 - Sat, Jan 30
American Airlines Logo
7:00 am - 3:29 pmPWM  Portland-ONT Ontario
11h 29m2 stops Philadelphia Phoenix Sky Harbor Intl
American Airlines Logo
5:44 am - 9:43 pmONT  Ontario-PWM Portland
12h 59m2 stops Dallas/Fort Worth Washington, D.C. Reagan-National
$425American Airlines
Mon, Jan 25 - Sat, Jan 30
American Airlines Logo
11:34 am - 11:08 pmPWM  Portland-ONT Ontario
14h 34m2 stops Washington, D.C. Reagan-National Dallas/Fort Worth
American Airlines Logo
9:28 am - 10:48 pmONT  Ontario-PWM Portland
10h 20m2 stops Phoenix Sky Harbor Intl Philadelphia
$425American Airlines
Mon, Jan 25 - Sat, Jan 30
American Airlines Logo
11:49 am - 11:13 pmPWM  Portland-ONT Ontario
14h 24m2 stops Washington, D.C. Reagan-National Dallas/Fort Worth
American Airlines Logo
9:28 am - 10:48 pmONT  Ontario-PWM Portland
10h 20m2 stops Phoenix Sky Harbor Intl Philadelphia
$425American Airlines
Fri, Nov 20 - Sun, Nov 22
Southwest Logo
5:20 am - 2:05 pmPWM  Portland-ONT Ontario
11h 45m2 stops Baltimore/Washington Denver Intl
Southwest Logo
11:55 pm - 1:05 pmONT  Ontario-PWM Portland
10h 10m2 stops Chicago Midway Baltimore/Washington
$461Southwest
Sat, Nov 7 - Sat, Nov 14
United Airlines Logo
3:23 pm - 8:51 pmPWM  Portland-ONT Ontario
8h 28m1 stop Denver Intl
United Airlines Logo
5:00 am - 4:02 pmONT  Ontario-PWM Portland
8h 02m1 stop Denver Intl
$489United Airlines
Booking Insights

Price, demand and travel trends for Portland to Ontario flights

Use KAYAK data on prices, travel dates, airlines and seasonal trends to compare options and book flights with more confidence.

How much is a round-trip flight from Portland to Ontario?

Round-trip flights from Portland to Ontario typically range from $369 to $593. The lowest price found in the past 5 days was $364, on Delta.

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Key details for Portland to Ontario flights

Low season

July

Cheapest flight

$180
Beat the crowds with an average 41% drop in travelers.
One-way flight from Portland to Ontario

When to book flights from Portland to Ontario

Are your dates flexible? Find out the best times to travel from Portland to Ontario based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price

Your Portland to Ontario flight questions, answered

Find helpful answers about this route, including flight times, airports, airlines and booking tips.

  • What cabin classes can I book on flights from Portland to Ontario?

    Only Economy Class is available on flights from Portland to Ontario.

  • How long is a flight from Portland to Ontario?

    A nonstop flight from Portland to Ontario takes 00m, covering 2,590 miles.

  • Do I need a passport to fly from Portland to Ontario?

    No, a passport is not required for this domestic route, but you will need a real ID-compliant driver's license, a state ID or another TSA-accepted form of identification.

  • How much should I expect to pay for a Portland to Ontario flight?

    Round-trip flights from Portland to Ontario range from $369 to $593, with an average of $490 over the past 12 months. Anything below $369 counts as a good deal.

  • How are flight prices from Portland to Ontario looking right now?

    One-way fares from Portland to Ontario are currently lower than usual. Average one-way flight prices are about $233, which is 29% below the typical average for this route.

  • What car rental options are available at Ontario Airport (ONT)?

    Ontario Airport (ONT) hosts 5 major car rental companies, with daily rates starting from around $18 for economy cars. Top options include:

    • Fox
    • Thrifty
    • Europcar
    • Dollar
    • Alamo

  • Which airports can I use when flying from Portland to Ontario?

    Flights from Portland to Ontario usually depart from Portland (PWM) and arrive at Ontario (ONT).

  • Which airports do connecting flights from Portland to Ontario pass through?

    One-stop flights from Portland to Ontario most commonly connect through:

    • Atlanta Hartsfield-Jackson (ATL) - 40% of one-stop connections
    • Baltimore/Washington (BWI) - 20% of one-stop connections
    • Dallas/Fort Worth (DFW) - 20% of one-stop connections
    • Denver Intl (DEN) - 10% of one-stop connections

  • Can I save money by using flexible dates for flights from Portland to Ontario?

    Yes. Flexible dates can save you up to 54% on flights from Portland to Ontario. Sunday is the cheapest departure day at $435 round-trip on average, while Thursday is the most expensive at $932, a difference of $497.

    Cheaper weekend fares like these are typical of routes dominated by weekday business travel.

  • How much time can I save by choosing a different layover airport from Portland to Ontario?

    Flying via Denver Intl (DEN) gives the shortest average 1-stop total travel time at 7h 56m, compared with 8h 39m via Dallas/Fort Worth (DFW) and 8h 47m via Baltimore/Washington (BWI).

  • What is the time difference between Portland and Ontario?

    Ontario is 3 hours behind Portland (Pacific Time vs Eastern Time). Plan for the time shift when scheduling connections or first-day activities.

  • What popular places can I visit in Ontario?

    Some of the most popular sights in Ontario are Ontario Convention Center and Cucamonga-Guasti Regional Park. These are among the most viewed places in Ontario on KAYAK.

Your guide to booking Portland to Ontario flights

Get tips on when to book, when to fly and what to know before your trip.
  • If your dates are flexible, aim for a Sunday departure and avoid flying on Thursday. On this route, Sunday flights average $435, about $497 less than Thursday fares (53% savings) based on the last 12 months.
  • If you can choose when to travel, plan your Portland to Ontario trip for February. Fares historically average $363 round-trip in that month - typically $569 less than the most expensive month, which is April (based on the last 12 months).
  • If you're arriving late at night and need somewhere to stay, check out these hotels close to Ontario Airport.

    • Azure Hotel & Suites, Trademark Collection by Wyndham
    • La Quinta Inn & Suites by Wyndham Ontario Airport
    • Ontario Airport Inn

More options for your flight from Portland to Ontario

Complete your trip to Ontario with a hotel stay or car rental

Car rentals in Ontario
Hotels in Ontario
Vacations in Ontario