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

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

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

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

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

One-stop flights from Ontario to Portland most commonly connect through: • Denver Intl (DEN) - 36% of one-stop connections • Dallas/Fort Worth (DFW) - 27% of one-stop connections • Chicago O'Hare Intl (ORD) - 23% of one-stop connections • Atlanta Hartsfield-Jackson (ATL) - 5% of one-stop connections

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

Yes. Flexible dates can save you up to 58% on flights from Ontario to Portland. Monday is the cheapest departure day at $258 round-trip on average, while Thursday is the most expensive at $613, a difference of $355. KAYAK's flexible dates feature shows options up to 3 days before and after your selected dates, making it easier to compare nearby fares.

How long is a flight from Ontario to Portland?

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

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

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 are flight prices from Ontario to Portland looking right now?

One-way fares from Ontario to Portland are currently lower than usual. Average one-way flight prices are about $238, which is 19% below the typical average for this route.

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

Flying via Denver Intl (DEN) gives the shortest average 1-stop total travel time at 7h 59m, compared with 8h 16m via Chicago O'Hare Intl (ORD) and 8h 36m via Dallas/Fort Worth (DFW).

What is the time difference between Ontario and Portland?

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

What car rental options are available at Portland Airport (PWM)?

Portland Airport (PWM) hosts 5 major car rental companies, with daily rates starting from around $24 for economy cars. Top options include: • Dollar • Budget • Alamo • Hertz • Movly

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

Round-trip flights from Ontario to Portland range from $415 to $614, with an average of $514 over the past 12 months. Anything below $415 counts as a good deal.

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

Round-trip flights from Ontario to Portland typically range from $415 to $614. The lowest price found in the past 5 days was $359, on Delta.

What's the cheapest day of the week to fly from Ontario to Portland?

Based on deals KAYAK users found in the last 12 months, Monday is the cheapest day of the week to fly from Ontario to Portland. It’s 50% cheaper than the average day, while Thursday is the most expensive, with prices 19% higher.

Which airline is the cheapest to fly from Ontario to Portland?

Delta ($359) and United Airlines ($396) are the cheapest airlines to fly round-trip from Ontario to Portland according to KAYAK data over the last 5 days.

What’s the most popular layover airport when flying from Ontario to Portland?

Denver Intl (DEN) is the most popular layover for the Ontario to Portland route. 36% of KAYAK users who booked 1-stop round-trips over the past 3 months connected via DEN.

What is the cheapest layover airport when flying from Ontario to Portland?

Flights via New York John F Kennedy Intl (JFK) offer the most affordable fares, with an average round-trip price of $258. Based on KAYAK data over the past 3 months.

When flying from Ontario to Portland which airport offers the shortest layover?

Denver Intl (DEN) had the shortest average connection time for Ontario to Portland layovers at 4h 24m over the past 3 months.

$199 CHEAP FLIGHTS from Ontario to Portland (ONT - PWM)

Save 21% or more on flights. Compare deals from all over the web.

Never overpay with our price tracking tools.

Filter searches by price, airline and more to find your best flights.

Cheapest round-trip

$359

Typical prices: $415-$614

Delta

Tue 10/30Wed 11/7

ONT - PWM • 1 stop

Cheapest one-way

$199

Typical prices: $249-$385

Southwest

Mon 12/17

ONT - PWM • 2 stops

Nonstop flights

Not available

There are currently no direct flights between Ontario and Portland. You'll need to take a connecting flight to reach the destination.

Insights

When to travel

August

Cheapest • 22% price drop

August

Most popular

Good to know

Top layover airports

New York John F Kennedy Intl (JFK)

Cheapest • Avg $258 (round-trip)

Denver Intl (DEN)

Shortest trip • 7h 59m (one-way)

Insights

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We hope you love your trip to Portland!

Flight Deals

Cheap Flights from Ontario to Portland (ONT-PWM)

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

Round-trip

One-way

Last minute

Recent round-trip flight deals from Ontario to Portland

Fri, Oct 30 - Sat, Nov 7

12:16 pm - 11:35 pmONT Ontario-PWM Portland

8h 19m1 stop Atlanta Hartsfield-Jackson

2:09 pm - 7:30 pmPWM Portland-ONT Ontario

8h 21m1 stop Atlanta Hartsfield-Jackson

$359Delta

Tue, Oct 20 - Tue, Oct 27

5:00 am - 4:02 pmONT Ontario-PWM Portland

8h 02m1 stop Denver Intl

8:32 am - 6:01 pmPWM Portland-ONT Ontario

12h 29m2 stops Chicago O'Hare Intl San Francisco

$396United Airlines

Fri, Nov 6 - Mon, Nov 9

11:55 pm - 2:45 pmONT Ontario-PWM Portland

11h 50m2 stops Chicago Midway Baltimore/Washington

1:40 pm - 10:15 pmPWM Portland-ONT Ontario

11h 35m2 stops Baltimore/Washington Dallas Love Field

$399Southwest

Tue, Oct 20 - Tue, Oct 27

9:00 pm - 10:55 amONT Ontario-PWM Portland

10h 55m2 stops Las Vegas Harry Reid Intl Chicago Midway

12:55 pm - 8:50 pmPWM Portland-ONT Ontario

10h 55m2 stops Baltimore/Washington Dallas Love Field

$401Southwest

Mon, Oct 26 - Fri, Oct 30

12:16 pm - 11:35 pmONT Ontario-PWM Portland

8h 19m1 stop Atlanta Hartsfield-Jackson

2:09 pm - 8:25 pmPWM Portland-ONT Ontario

9h 16m1 stop Atlanta Hartsfield-Jackson

$438Delta

Sun, Nov 1 - Wed, Nov 11

5:00 am - 4:02 pmONT Ontario-PWM Portland

8h 02m1 stop Denver Intl

3:23 pm - 8:51 pmPWM Portland-ONT Ontario

8h 28m1 stop Denver Intl

$489United Airlines

Sat, Oct 31 - Sat, Nov 7

5:00 am - 4:02 pmONT Ontario-PWM Portland

8h 02m1 stop Denver Intl

3:23 pm - 8:51 pmPWM Portland-ONT Ontario

8h 28m1 stop Denver Intl

$489United Airlines

Sun, Nov 1 - Sat, Nov 7

5:00 am - 4:02 pmONT Ontario-PWM Portland

8h 02m1 stop Denver Intl

3:23 pm - 8:51 pmPWM Portland-ONT Ontario

8h 28m1 stop Denver Intl

$489United Airlines

Sat, Oct 31 - Tue, Nov 10

5:00 am - 4:02 pmONT Ontario-PWM Portland

8h 02m1 stop Denver Intl

3:23 pm - 8:51 pmPWM Portland-ONT Ontario

8h 28m1 stop Denver Intl

$489United Airlines

Mon, Nov 2 - Sat, Nov 7

5:00 am - 4:02 pmONT Ontario-PWM Portland

8h 02m1 stop Denver Intl

3:23 pm - 8:51 pmPWM Portland-ONT Ontario

8h 28m1 stop Denver Intl

$489United Airlines

Recent last minute flight deals from Ontario to Portland

Tue, Sep 29 - Thu, Oct 1

12:17 pm - 11:28 pmONT Ontario-PWM Portland

8h 11m1 stop Atlanta Hartsfield-Jackson

6:00 am - 11:09 amPWM Portland-ONT Ontario

8h 09m1 stop Atlanta Hartsfield-Jackson

$614Delta

Tue, Sep 29 - Thu, Oct 1

9:52 am - 11:28 pmONT Ontario-PWM Portland

10h 36m2 stops Salt Lake City Atlanta Hartsfield-Jackson

6:00 am - 11:09 amPWM Portland-ONT Ontario

8h 09m1 stop Atlanta Hartsfield-Jackson

$619Delta

Tue, Sep 29 - Thu, Oct 1

8:35 am - 10:10 pmONT Ontario-PWM Portland

10h 35m2 stops Phoenix Sky Harbor Intl Chicago Midway

6:30 am - 2:10 pmPWM Portland-ONT Ontario

10h 40m1 stop Chicago Midway

$619Southwest

Tue, Sep 29 - Thu, Oct 1

12:17 pm - 11:28 pmONT Ontario-PWM Portland

8h 11m1 stop Atlanta Hartsfield-Jackson

6:00 am - 11:09 amPWM Portland-ONT Ontario

8h 09m1 stop Atlanta Hartsfield-Jackson

$649Delta

Tue, Sep 29 - Thu, Oct 1

8:35 am - 10:10 pmONT Ontario-PWM Portland

10h 35m2 stops Phoenix Sky Harbor Intl Chicago Midway

6:30 am - 2:25 pmPWM Portland-ONT Ontario

10h 55m2 stops Chicago Midway Denver Intl

$674Southwest

Tue, Sep 29 - Thu, Oct 1

8:35 am - 10:10 pmONT Ontario-PWM Portland

10h 35m2 stops Phoenix Sky Harbor Intl Chicago Midway

5:20 am - 2:00 pmPWM Portland-ONT Ontario

11h 40m2 stops Baltimore/Washington Las Vegas Harry Reid Intl

$674Southwest

Thu, Oct 1 - Wed, Oct 7

7:00 am - 6:43 pmONT Ontario-PWM Portland

8h 43m1 stop Chicago O'Hare Intl

5:08 pm - 10:49 pmPWM Portland-ONT Ontario

8h 41m1 stop Chicago O'Hare Intl

$764United Airlines

Tue, Sep 29 - Thu, Oct 1

7:00 am - 6:43 pmONT Ontario-PWM Portland

8h 43m1 stop Chicago O'Hare Intl

3:45 pm - 8:58 pmPWM Portland-ONT Ontario

8h 13m1 stop Denver Intl

$764United Airlines

Tue, Sep 29 - Thu, Oct 1

5:00 am - 8:22 pmONT Ontario-PWM Portland

12h 22m2 stops Denver Intl Newark

5:08 pm - 10:49 pmPWM Portland-ONT Ontario

8h 41m1 stop Chicago O'Hare Intl

$769United Airlines

Fri, Oct 2 - Wed, Oct 7

7:00 am - 6:43 pmONT Ontario-PWM Portland

8h 43m1 stop Chicago O'Hare Intl

5:08 pm - 10:49 pmPWM Portland-ONT Ontario

8h 41m1 stop Chicago O'Hare Intl

$834United Airlines

Booking Insights

Price, demand and travel trends for Ontario to Portland flights

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

Prices

Airlines

Layovers

How much is a round-trip flight from Ontario to Portland? This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from Ontario to Portland departing in october.
What's the cheapest day of the week to fly from Ontario to Portland?: Based on deals KAYAK users found in the last 12 months, Monday is the cheapest day of the week to fly from Ontario to Portland. It’s 50% cheaper than the average day, while Thursday is the most expensive, with prices 19% higher.

Find deals

Low season	January
High season	August
Cheapest flight	$199

One-way flight from Ontario to Portland

When to book flights from Ontario to Portland

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

Estimated round-trip price

KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

What cabin classes can I book on flights from Ontario to Portland?
Only Economy Class is available on flights from Ontario to Portland.
How long is a flight from Ontario to Portland?
A nonstop flight from Ontario to Portland takes 00m, covering 2,590 miles.
Do I need a passport to fly from Ontario to Portland?
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 Ontario to Portland flight?
Round-trip flights from Ontario to Portland range from $415 to $614, with an average of $514 over the past 12 months. Anything below $415 counts as a good deal.
How are flight prices from Ontario to Portland looking right now?
One-way fares from Ontario to Portland are currently lower than usual. Average one-way flight prices are about $238, which is 19% below the typical average for this route.
What car rental options are available at Portland Airport (PWM)?
Portland Airport (PWM) hosts 5 major car rental companies, with daily rates starting from around $24 for economy cars. Top options include:

• Dollar
• Budget
• Alamo
• Hertz
• Movly
Which airports can I use when flying from Ontario to Portland?
Flights from Ontario to Portland usually depart from Ontario (ONT) and arrive at Portland (PWM).
Which airports do connecting flights from Ontario to Portland pass through?
One-stop flights from Ontario to Portland most commonly connect through:

• Denver Intl (DEN) - 36% of one-stop connections
• Dallas/Fort Worth (DFW) - 27% of one-stop connections
• Chicago O'Hare Intl (ORD) - 23% of one-stop connections
• Atlanta Hartsfield-Jackson (ATL) - 5% of one-stop connections
Can I save money by using flexible dates for flights from Ontario to Portland?
Yes. Flexible dates can save you up to 58% on flights from Ontario to Portland. Monday is the cheapest departure day at $258 round-trip on average, while Thursday is the most expensive at $613, a difference of $355.

KAYAK's flexible dates feature shows options up to 3 days before and after your selected dates, making it easier to compare nearby fares.
How much time can I save by choosing a different layover airport from Ontario to Portland?
Flying via Denver Intl (DEN) gives the shortest average 1-stop total travel time at 7h 59m, compared with 8h 16m via Chicago O'Hare Intl (ORD) and 8h 36m via Dallas/Fort Worth (DFW).
What is the time difference between Ontario and Portland?
Portland is 3 hours ahead of Ontario (Eastern Time vs Pacific Time). Plan for the time shift when scheduling connections or first-day activities.

If your dates are flexible, aim for a Monday departure and avoid flying on Thursday. On this route, Monday flights average $258, about $355 less than Thursday fares (58% savings) based on the last 12 months.
If you can choose when to travel, plan your Ontario to Portland trip for August. Fares historically average $403 round-trip in that month - typically $411 less than the most expensive month, which is March (based on the last 12 months).
If you're arriving late at night and need somewhere to stay, check out these hotels close to Portland Airport.

• Clarion Hotel Portland Airport Me
• DoubleTree by Hilton Portland
• La Quinta Inn & Suites by Wyndham Portland DT/Maine Med

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ONT - PWM

$199 Find Cheap Flights from Ontario to Portland - Compare and Save

Everything you should know

Cheap Flights from Ontario to Portland (ONT-PWM)

Recent round-trip flight deals from Ontario to Portland

Recent one-way flight deals from Ontario to Portland

Recent last minute flight deals from Ontario to Portland

Price, demand and travel trends for Ontario to Portland flights

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

What's the cheapest day of the week to fly from Ontario to Portland?

Which airline is the cheapest to fly from Ontario to Portland?

What’s the most popular layover airport when flying from Ontario to Portland?

What is the cheapest layover airport when flying from Ontario to Portland?

When flying from Ontario to Portland which airport offers the shortest layover?

Key details for Ontario to Portland flights

Low season

High season

Cheapest flight

When to book flights from Ontario to Portland

Your Ontario to Portland flight questions, answered

Your guide to booking Ontario to Portland flights

More options for your flight from Ontario to Portland

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

Information on your arrival and departure airports

Cabin class types available on flights from Ontario to Portland

Find direct flights to and from Ontario and Portland

Flights from domestic origins to Portland

Flights to other popular destinations

Find deals for your return flight