Find Cheap Flights from Portland to Ontario (PDX - ONT)

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Good to Know

Low Season:
January
Best time to beat the crowds
3%
expected price decrease
High Season:
November
Most popular time to fly
3%
expected price increase
Average Price:
$252
(avg. price over the last 2 weeks)
Good Deal:
$197
or less (round trip)

When to Book Flights from Portland to Ontario

Average price per month
Flight prices as travel date approaches
-1 day
-2 days

Top tips for Finding a Cheap Flight

Looking for a cheap flight? 25% of our users found flights on this route for $197 or less.
The cheapest flight from Portland to Ontario was found 75 days before departure, on average.
Book at least 2 weeks before departure in order to get a below-average price.
High season is considered to be October, November and December. The cheapest month to fly is January.
Morning departure is around 2% cheaper than an evening flight, on average*.
*Average of the lowest prices shown in KAYAK’s search results for departures within the next 30 days

FAQs for Booking Portland to Ontario Flights

How long does a flight from Portland to Ontario take?
An average nonstop flight takes 2h 15m, covering a distance of 839 miles.
How many flights are there between Portland and Ontario?
There are 45 (nonstop) flights between Portland and Ontario per week, averaging 6 per day.
Which airlines provide the cheapest flights from Portland to Ontario?
In the past 3 days, the cheapest round-trip tickets were found on Alaska Airlines ($137), Multiple Airlines ($146) and United ($154).
Do I need a passport to fly between Portland and Ontario?
No.
Which airlines fly most frequently between Portland and Ontario?
Alaska Airlines (4 times daily), Southwest (2 times daily) are the most frequent flyers on this route.
What’s the cheapest day of the week to fly Portland to Ontario?
For Portland to Ontario, Tuesday is the cheapest day to fly on average and Thursday is the most expensive. Flying from Ontario back to Portland, the best deals are generally found on Wednesday, with Thursday being the most expensive.

Book cheap flights from Portland to Ontario (round-trip)

Airports
Origin
Portland
$137
only
$137
Destination
Ontario
$137
only
$137
Tue, Apr 17
PDX
ONT
2h 28m
Wed, Apr 25
ONT
PDX
2h 19m
Trip: 9 days
9.7ExcellentShow reviews
Overall 9.7 Excellent
Based on 5 reviews
Overall
8.6
Boarding
8.7
Comfort
8.4
Crew
8.9
Entertainment
7.9
Food
8.0
LAX
MEX
Mediocre 2.0

My luggage didn’t come on my flight. I was given a phone number to call for updates. I didn’t receive my bag until the following day. It was very unprofessional.

RDU
SEA
Excellent 8.3

The flight crew was incredibly sweet and helpful; one of them even gave me their personal TUMS when I said I didn't feel well.

The flight boarded 30 minutes early; I arrived to my gate at the time of when my ticket said boarding started, but they were already calling final boarding call for my flight. I completely panicked. The plane was clean but the seats are very close together and there were no complimentary snacks- even though it was a 6 hour flight. On my flight back from Seattle on Delta, we got a complimentary meal AND a complimentary snack. I was expecting my Alaskan flight to be better based on everything I'd heard from friends, but my return Delta flight showed Alaska up; it was a spacier plane with way more food offered.

PDX
ONT
Excellent 10.0

I love Alaska. Yup, love. I fly with them often. Their customer service is amazing and they are particularly great at anticipating problems and getting ahead of them. As always, this was a smooth trip.

ORD
SEA
Excellent 9.6

crew's upbeat attitude

very limited drink choices

SEA
SNA
Excellent 9.3

Up and down, no problems

Chocolate and almonds for breakfast snack?

Wed, Apr 18
PDX
ONT
2h 15m
Sat, Apr 21
ONT
PDX
4h 24m
Trip: 4 days
Overall 0.0 Poor
Based on 0 reviews
Sat, Apr 14
PDX
ONT
4h 20m
Sat, Apr 21
ONT
PDX
4h 24m
Trip: 8 days
7.0GoodShow reviews
Overall 7.0 Good
Based on 54764 reviews
Overall
7.2
Boarding
7.4
Comfort
7.0
Crew
7.7
Entertainment
6.5
Food
6.4
LAX
ORD
Good 7.0

Crew was nice

Plane was delayed for 4 hours, should have given us miles or a voucher

DSM
DEN
Excellent 8.0

I had to check my carry on from DEN to DSM because flight was full which I was told I could pickup at gate.. at the gate the TSA agent was very rude to me as I was confused as where my bag was, which I had to to baggage claim.

EWR
TPA
Excellent 8.0

Made up time for delayed departure

So cramped. Sat next to very obese person....spilled onto my seat

LAX
NRT
Good 7.6

Staff was ind and friendly. Generous

Wish there was better food. It was okay.

IAD
PHX
Mediocre 2.0

I never flew to Phoenix from Washington. I was held over at DCA for the night so I lost a full day of my vacation! Had to fly to Chicago and then to Phoenix. Was a total pain!!!

Wed, Mar 14
PDX
ONT
6h 09m
Wed, Mar 21
ONT
PDX
6h 16m
Trip: 8 days
7.8GoodShow reviews
Overall 7.8 Good
Based on 16166 reviews
Overall
8.0
Boarding
8.1
Comfort
7.8
Crew
8.4
Entertainment
7.5
Food
7.4
FLL
BOS
Good 6.3

Food and nice crew

No tvs and bad WiFi

SLC
YYZ
Excellent 8.0

was a difficult transition from delta to west jet in Toronto and we almost missed the flight

JFK
MCO
Excellent 8.0

Entertainment system great. Individual choices include recent movies. On board staff very nice

We had issues with baggage. Delta was supposed to transfer 4 bags to Disney for Magic Express transportation. Only 3 went. Disney tried hard to fix problem, and even gave us something to ameliorate the situation. Delta took hard line, wasn't helpful and gave nothing. It took 2 days to find bag.

FLL
ATL
Excellent 8.0

Departure was right on time and we actually arrived 15 minutes early.

The inflight monitor worked but none of the data (GPS altitude or speed) was working.

LAX
MCO
Excellent 10.0

I am used to flying Frontier because of cost but recently traveled Delta and boy did I feel completely spoiled! Not only did my other half get our bags for free due to his status with Delta but the amenities they offer and the comfort of the economy seats compared to other airlines is a major difference. As a chronic pain patient, if I can find a Delta flight for a little more, I will be booking with them for sure! Highly recommend them!

Sun, Apr 22
PDX
ONT
22h 33m
Thu, Apr 26
ONT
PDX
14h 35m
Trip: 5 days
5.7OkayShow reviews
Overall 5.7 Okay
Based on 33896 reviews
Overall
5.9
Boarding
6.4
Comfort
5.4
Crew
6.8
Entertainment
4.5
Food
4.7
LAX
DEN
Mediocre 2.0

Checking my luggage and then re-checking my luggage !!! Very annoying and very inconvenient. This is not passenger / customer friendly !!!

PHL
SJU
Good 6.0

boarding and treatment by staff wad excellent

$3 for a cup of coffee is outrageous.... other airlines at least include beverages and a snack (peanuts etc).

ABQ
DEN
Mediocre 2.0

They had to fly in 2 plains to try and get us out. They didn’t offer meal vouchers until 51/3 hours into the delay.

MCI
DEN
Excellent 10.0

Very smooth flight

AUS
PHX
Good 6.0

Flight was delayed

Wed, Apr 18
PDX
ONT
2h 28m
Wed, Apr 25
ONT
PDX
2h 19m
Trip: 8 days
9.7ExcellentShow reviews
Overall 9.7 Excellent
Based on 5 reviews
Overall
8.6
Boarding
8.7
Comfort
8.4
Crew
8.9
Entertainment
7.9
Food
8.0
RDU
SEA
Excellent 8.3

The flight crew was incredibly sweet and helpful; one of them even gave me their personal TUMS when I said I didn't feel well.

The flight boarded 30 minutes early; I arrived to my gate at the time of when my ticket said boarding started, but they were already calling final boarding call for my flight. I completely panicked. The plane was clean but the seats are very close together and there were no complimentary snacks- even though it was a 6 hour flight. On my flight back from Seattle on Delta, we got a complimentary meal AND a complimentary snack. I was expecting my Alaskan flight to be better based on everything I'd heard from friends, but my return Delta flight showed Alaska up; it was a spacier plane with way more food offered.

LAX
MEX
Mediocre 2.0

My luggage didn’t come on my flight. I was given a phone number to call for updates. I didn’t receive my bag until the following day. It was very unprofessional.

SEA
MCO
Mediocre 2.3

I dispatched a guitar in a hard case. It was labeled fragile and sent to a separate compartment. The guitar was poorly treated and the case was broken all over. Very disappointing. On top of that I had requested window seat and got the middle seat. No food was served and there was no movies to watch or anything, considering this was a five hour flight

SEA
SNA
Excellent 9.3

Up and down, no problems

Chocolate and almonds for breakfast snack?

ORD
SEA
Excellent 9.6

crew's upbeat attitude

very limited drink choices

Sat, Apr 21
PDX
ONT
2h 15m
Wed, Apr 25
ONT
PDX
2h 19m
Trip: 5 days
9.7ExcellentShow reviews
Overall 9.7 Excellent
Based on 5 reviews
Overall
8.6
Boarding
8.7
Comfort
8.4
Crew
8.9
Entertainment
7.9
Food
8.0
PDX
ONT
Excellent 10.0

Great crew

RDU
SEA
Excellent 8.3

The flight crew was incredibly sweet and helpful; one of them even gave me their personal TUMS when I said I didn't feel well.

The flight boarded 30 minutes early; I arrived to my gate at the time of when my ticket said boarding started, but they were already calling final boarding call for my flight. I completely panicked. The plane was clean but the seats are very close together and there were no complimentary snacks- even though it was a 6 hour flight. On my flight back from Seattle on Delta, we got a complimentary meal AND a complimentary snack. I was expecting my Alaskan flight to be better based on everything I'd heard from friends, but my return Delta flight showed Alaska up; it was a spacier plane with way more food offered.

ORD
SEA
Excellent 9.6

crew's upbeat attitude

very limited drink choices

LAX
MEX
Mediocre 2.0

My luggage didn’t come on my flight. I was given a phone number to call for updates. I didn’t receive my bag until the following day. It was very unprofessional.

SEA
DEN
Excellent 10.0

i wish Alaska would fly straight to Denver from Montana. I fly from Montana to Denver a lot and it ends up being a whole day of travel instead of a couple hour flight.

Sat, Apr 21
PDX
ONT
4h 05m
Tue, Apr 24
ONT
PDX
4h 20m
Trip: 4 days
7.0GoodShow reviews
Overall 7.0 Good
Based on 54764 reviews
Overall
7.2
Boarding
7.4
Comfort
7.0
Crew
7.7
Entertainment
6.5
Food
6.4
IAD
NRT
Excellent 10.0

For a little over $2000 you get an economy seat non-stop from DC to Tokyo and back. Meals were good. As economy seats go, it's comfortable. Midweek the flight is about half to two thirds full. So you might be able to stretch out even!

DSM
DEN
Excellent 8.0

I had to check my carry on from DEN to DSM because flight was full which I was told I could pickup at gate.. at the gate the TSA agent was very rude to me as I was confused as where my bag was, which I had to to baggage claim.

EWR
SYR
Mediocre 2.0

Nothing

Taxied for 45 minutes, got on runway then determined we were low on fuel. Back to gate, refuel, two hour delay

IAD
PHX
Mediocre 2.0

I never flew to Phoenix from Washington. I was held over at DCA for the night so I lost a full day of my vacation! Had to fly to Chicago and then to Phoenix. Was a total pain!!!

PWM
IAD
Mediocre 2.0

Nothing was good about this airline with the exception of the baggage crew that finally helped me in Washington Ronald Regan Airport

My flight out of Portland was canceled and it took hours to rebook. I had to fly American Airline to Washington DCA where I roamed the airport at 9pm looking for someone from United. The crew in Portland ME told me the gate person would have a hotel for me.... The baggage crew had to help me.

Tue, Mar 6
PDX
ONT
7h 38m
Wed, Mar 14
ONT
PDX
7h 30m
Trip: 8 days
Overall 0.0 Poor
Based on 0 reviews
Sat, Mar 17
PDX
ONT
4h 17m
Thu, Mar 22
ONT
PDX
7h 30m
Trip: 6 days
7.8GoodShow reviews
Overall 7.8 Good
Based on 16166 reviews
Overall
8.0
Boarding
8.1
Comfort
7.8
Crew
8.4
Entertainment
7.5
Food
7.4
MSP
CZM
Excellent 10.0

Everything went smoothly.

All was good.

SLC
YYZ
Excellent 8.0

was a difficult transition from delta to west jet in Toronto and we almost missed the flight

LAX
MSP
Excellent 9.0

Had to sit in the middle row and I wasn’t given the option to get an aisle sit during check in.

No flexibility for seats

FLL
ATL
Excellent 8.0

Departure was right on time and we actually arrived 15 minutes early.

The inflight monitor worked but none of the data (GPS altitude or speed) was working.

JFK
CDG
Excellent 10.0

The food and the service

Sun, Apr 15
PDX
ONT
4h 20m
Sat, Apr 21
ONT
PDX
4h 24m
Trip: 7 days
7.0GoodShow reviews
Overall 7.0 Good
Based on 54764 reviews
Overall
7.2
Boarding
7.4
Comfort
7.0
Crew
7.7
Entertainment
6.5
Food
6.4
LAX
ORD
Good 7.0

Crew was nice

Plane was delayed for 4 hours, should have given us miles or a voucher

IAD
MUC
Excellent 9.3

United was flexible when I had to change my reservation at the last minute. Good service on board.

ZRH
EWR
Excellent 9.6

more room in the seats

movie choices were meh, but I guess that's a personal preference

EWR
TPA
Excellent 8.0

Made up time for delayed departure

So cramped. Sat next to very obese person....spilled onto my seat

IAD
PHX
Mediocre 2.0

I never flew to Phoenix from Washington. I was held over at DCA for the night so I lost a full day of my vacation! Had to fly to Chicago and then to Phoenix. Was a total pain!!!

Tue, Apr 10
PDX
ONT
2h 15m
Thu, Apr 12
ONT
PDX
2h 19m
Trip: 3 days
9.7ExcellentShow reviews
Overall 9.7 Excellent
Based on 5 reviews
Overall
8.6
Boarding
8.7
Comfort
8.4
Crew
8.9
Entertainment
7.9
Food
8.0
SJC
SJD
Okay 4.6

poor

SEA
LIH
Excellent 10.0

Flt arrived early. The crew were all very friendly and the service was excellent.

LAX
MEX
Mediocre 2.0

My luggage didn’t come on my flight. I was given a phone number to call for updates. I didn’t receive my bag until the following day. It was very unprofessional.

SEA
DEN
Excellent 10.0

boarding was late due to repairs on the plane

PDX
ONT
Excellent 10.0

Everything was on schedule, very friendly crew, great take off and landing!!!

Mon, Apr 2
PDX
ONT
6h 41m
Wed, Apr 11
ONT
PDX
4h 57m
Trip: 10 days
Overall 0.0 Poor
Based on 0 reviews
Mon, Mar 19
PDX
ONT
4h 25m
Thu, Mar 22
ONT
PDX
7h 30m
Trip: 4 days
7.8GoodShow reviews
Overall 7.8 Good
Based on 16166 reviews
Overall
8.0
Boarding
8.1
Comfort
7.8
Crew
8.4
Entertainment
7.5
Food
7.4
FLL
ATL
Excellent 8.0

Departure was right on time and we actually arrived 15 minutes early.

The inflight monitor worked but none of the data (GPS altitude or speed) was working.

LAX
MCO
Excellent 10.0

I am used to flying Frontier because of cost but recently traveled Delta and boy did I feel completely spoiled! Not only did my other half get our bags for free due to his status with Delta but the amenities they offer and the comfort of the economy seats compared to other airlines is a major difference. As a chronic pain patient, if I can find a Delta flight for a little more, I will be booking with them for sure! Highly recommend them!

SLC
YYZ
Excellent 9.6

Z

JFK
CDG
Excellent 10.0

The food and the service

FLL
BOS
Good 6.3

Food and nice crew

No tvs and bad WiFi

Mon, Apr 16
PDX
ONT
4h 30m
Sat, Apr 21
ONT
PDX
4h 24m
Trip: 6 days
7.0GoodShow reviews
Overall 7.0 Good
Based on 54764 reviews
Overall
7.2
Boarding
7.4
Comfort
7.0
Crew
7.7
Entertainment
6.5
Food
6.4
IAD
MUC
Excellent 9.3

United was flexible when I had to change my reservation at the last minute. Good service on board.

LAX
NRT
Good 7.6

Staff was ind and friendly. Generous

Wish there was better food. It was okay.

EWR
TPA
Excellent 8.0

Made up time for delayed departure

So cramped. Sat next to very obese person....spilled onto my seat

PWM
IAD
Mediocre 2.0

Nothing was good about this airline with the exception of the baggage crew that finally helped me in Washington Ronald Regan Airport

My flight out of Portland was canceled and it took hours to rebook. I had to fly American Airline to Washington DCA where I roamed the airport at 9pm looking for someone from United. The crew in Portland ME told me the gate person would have a hotel for me.... The baggage crew had to help me.

EWR
SYR
Mediocre 2.0

Nothing

Taxied for 45 minutes, got on runway then determined we were low on fuel. Back to gate, refuel, two hour delay

Tue, Apr 17
PDX
ONT
2h 28m
Mon, Apr 23
ONT
PDX
2h 19m
Trip: 7 days
9.7ExcellentShow reviews
Overall 9.7 Excellent
Based on 5 reviews
Overall
8.6
Boarding
8.7
Comfort
8.4
Crew
8.9
Entertainment
7.9
Food
8.0
LAX
MEX
Mediocre 2.0

My luggage didn’t come on my flight. I was given a phone number to call for updates. I didn’t receive my bag until the following day. It was very unprofessional.

PDX
ONT
Excellent 10.0

Everything was on schedule, very friendly crew, great take off and landing!!!

SEA
DEN
Excellent 10.0

i wish Alaska would fly straight to Denver from Montana. I fly from Montana to Denver a lot and it ends up being a whole day of travel instead of a couple hour flight.

SEA
SNA
Excellent 9.3

Up and down, no problems

Chocolate and almonds for breakfast snack?

ORD
SEA
Excellent 9.6

crew's upbeat attitude

very limited drink choices

Thu, Mar 1
PDX
ONT
22h 23m
Mon, Apr 2
ONT
PDX
23h 52m
Trip: 32 days
5.7OkayShow reviews
Overall 5.7 Okay
Based on 33896 reviews
Overall
5.9
Boarding
6.4
Comfort
5.4
Crew
6.8
Entertainment
4.5
Food
4.7
AUS
PHX
Good 6.0

Flight was delayed

DEN
DCA
Mediocre 3.3

Non stop

Late flight with no explanation. No WiFi Nickel and dime you to death

MIA
PHL
Okay 5.3

Boarding was smooth and fast. The travel time was a bit faster than predicted too.

With lack of reclining seats and no complimentary snacks or drinks at all, the comfort scale is lacking. Even the tray tables were replaced by miniature, undersized, pieces. Even with the discounted prices, it’s hard to want to fly with them again.

MKE
LAS
Okay 5.3

It was clean, and the crew did great!

Way off schedule, way to tight of space, no way to sleep being such a late flight! As far as a beverage, they were out of everything!! Nice air line for quick trips,but to fly for 4 hrs at night from leaving at 12;00am, just impossible to sleep or really relax.

LAX
DEN
Mediocre 2.0

Checking my luggage and then re-checking my luggage !!! Very annoying and very inconvenient. This is not passenger / customer friendly !!!

Tue, Apr 3
PDX
ONT
4h 15m
Wed, Apr 11
ONT
PDX
4h 57m
Trip: 9 days
Overall 0.0 Poor
Based on 0 reviews
Tue, Mar 20
PDX
ONT
4h 25m
Thu, Mar 22
ONT
PDX
7h 30m
Trip: 3 days
7.8GoodShow reviews
Overall 7.8 Good
Based on 16166 reviews
Overall
8.0
Boarding
8.1
Comfort
7.8
Crew
8.4
Entertainment
7.5
Food
7.4
FLL
BOS
Good 6.3

Food and nice crew

No tvs and bad WiFi

MSP
CLT
Excellent 10.0

It was great because I was able to get an aisle seat.

Like it all

MSP
CZM
Excellent 10.0

Everything went smoothly.

All was good.

JFK
CDG
Excellent 10.0

The food and the service

LAX
MCO
Excellent 10.0

I am used to flying Frontier because of cost but recently traveled Delta and boy did I feel completely spoiled! Not only did my other half get our bags for free due to his status with Delta but the amenities they offer and the comfort of the economy seats compared to other airlines is a major difference. As a chronic pain patient, if I can find a Delta flight for a little more, I will be booking with them for sure! Highly recommend them!

Wed, Apr 18
PDX
ONT
2h 28m
Mon, Apr 23
ONT
PDX
2h 19m
Trip: 6 days
9.7ExcellentShow reviews
Overall 9.7 Excellent
Based on 5 reviews
Overall
8.6
Boarding
8.7
Comfort
8.4
Crew
8.9
Entertainment
7.9
Food
8.0
SEA
DEN
Excellent 10.0

boarding was late due to repairs on the plane

SEA
DEN
Excellent 10.0

i wish Alaska would fly straight to Denver from Montana. I fly from Montana to Denver a lot and it ends up being a whole day of travel instead of a couple hour flight.

SEA
MCO
Mediocre 2.3

I dispatched a guitar in a hard case. It was labeled fragile and sent to a separate compartment. The guitar was poorly treated and the case was broken all over. Very disappointing. On top of that I had requested window seat and got the middle seat. No food was served and there was no movies to watch or anything, considering this was a five hour flight

PDX
ONT
Excellent 10.0

I love Alaska. Yup, love. I fly with them often. Their customer service is amazing and they are particularly great at anticipating problems and getting ahead of them. As always, this was a smooth trip.

PDX
ONT
Excellent 10.0

Everything was on schedule, very friendly crew, great take off and landing!!!

Show more results

Portland to Ontario Flight Information

Avg. Flight Duration 2h 21m
Flights Arrive in Ontario
Flights Depart from Portland
Flight Price $137
Distance 839 miles
Airlines Alaska Airlines, United, Delta, Frontier
*
Prices are per person and are for e–tickets and include all taxes & fees in USD.

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Here's why:

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Why aren’t prices accurate 100% of the time?
Prices on airline seats, hotel rooms and car rentals can change frequently. Several people may also be trying to buy the same travel option simultaneously. As a result, you may find, on occasion, that certain prices are no longer available.

If you have more questions or if you have a bad price to report to us,
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The fares displayed include all taxes and fees for economy class travel and were found by the provider in the last 72 hours. Seats are limited and may not be available on all flights and days. Fares are subject to change and may not be available on all flights or dates of travel. Some carriers charge additional fees for extra checked bags. Please check the carriers' sites.