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PDX - ONT

$39 Find cheap flights from Portland to Ontario

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Portland to Ontario departing on 7/16. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
0 bags
Tue 7/16
Tue 7/23

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These are the airlines KAYAK users have selected most often from within our search results in flight searches from Portland to Ontario.
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Portland to Ontario.
In the last 7 days travelers have searched 43,982,894 times on KAYAK, and here is why:

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Cheap flight deals from Portland to Ontario (PDX-ONT)

Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Portland to Ontario that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices and deals for you by selecting your travel dates.
Choose your dates
5:14 pm - 7:35 pmPDX-ONT
2h 21mnonstop
2:01 pm - 4:14 pmONT-PDX
2h 13mnonstop
$48Frontier
Find Deal
Wed, Aug 14 - Wed, Aug 21
7:10 pm - 9:30 pmPDX-ONT
2h 20mnonstop
3:57 pm - 6:10 pmONT-PDX
2h 13mnonstop
$58Frontier
Find Deal
Tue, Jul 23 - Tue, Jul 30
5:14 pm - 7:35 pmPDX-ONT
2h 21mnonstop
2:01 pm - 4:14 pmONT-PDX
2h 13mnonstop
$62Frontier
Find Deal
Wed, Aug 28 - Tue, Sep 3
7:10 pm - 9:30 pmPDX-ONT
2h 20mnonstop
3:57 pm - 6:10 pmONT-PDX
2h 13mnonstop
$63Frontier
Find Deal
Tue, Jul 30 - Tue, Aug 6
7:44 pm - 10:04 pmPDX-ONT
2h 20mnonstop
2:01 pm - 4:14 pmONT-PDX
2h 13mnonstop
$65Frontier
Find Deal
Sat, Jul 27 - Tue, Aug 13
5:45 pm - 11:59 pmPDX-ONT
6h 14m1 stop
2:01 pm - 4:14 pmONT-PDX
2h 13mnonstop
Tue, Jul 30 - Tue, Aug 13
5:45 pm - 11:59 pmPDX-ONT
6h 14m1 stop
1:47 pm - 4:00 pmONT-PDX
2h 13mnonstop
Tue, Jul 23 - Wed, Jul 31
4:45 pm - 11:59 pmPDX-ONT
7h 14m1 stop
6:40 am - 8:57 amONT-PDX
2h 17mnonstop
$196Alaska Airlines
Find Deal
Wed, Jul 31 - Sun, Aug 11
5:12 pm - 7:31 pmPDX-ONT
2h 19mnonstop
4:24 pm - 8:42 pmONT-PDX
4h 18m1 stop
$201Alaska Airlines
Find Deal
Sat, Jul 27 - Wed, Aug 14
5:10 am - 12:15 pmPDX-ONT
7h 05m1 stop
6:59 pm - 11:52 pmONT-PDX
4h 53m1 stop
$206Delta
Find Deal
Wed, Jul 31 - Wed, Aug 14

Flights from Portland to Ontario - Travel Insights & Trends

Get data-powered insights and trends into flights from Portland to Ontario to help you find the cheapest flights, the best time to fly and much more.

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

The average price of all flights from Portland to Ontario clicked on KAYAK for each day over the last 12 months.
If you are looking for a flight deal from Portland to Ontario, look for departures on Tuesdays and avoid leaving on a Sunday, as it's usually the priciest day. When flying back from Ontario, Saturday is the cheapest day to fly and Sunday is the most expensive.

What is the cheapest month to fly from Portland to Ontario?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for flights from Portland to Ontario, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.
The cheapest month for flights from Portland to Ontario is April, where tickets cost $136 on average. On the other hand, the most expensive months are March and December, where the average cost of tickets is $362 and $347 respectively.

How far in advance should I book a flight from Portland to Ontario?

To calculate daily average prices, KAYAK takes all prices for each day before departure over the last year for flights from Portland to Ontario, removes the top 0.1% to account for outliers, and then takes the average of all the values for each month.
To get a below average price on the flight from Portland to Ontario, you should book around 2 weeks before departure. For the absolute cheapest price, our data suggests you should book 89 days before departure.

Which airlines provide the cheapest flights from Portland to Ontario?

The cheapest price for the route for each airline clicked by KAYAK users in the last 72 hours.
The cheapest return flight ticket from Portland to Ontario found by KAYAK users in the last 72 hours was for $48 on Frontier, followed by Alaska Airlines ($196). One-way flight deals have also been found from as low as $39 on Frontier and from $88 on United Airlines.

Which airlines fly non-stop between Portland and Ontario?

Airline and price data is aggregated from results in KAYAK’s search results from the last 2 weeks for flights from Portland to Ontario.
There are 3 airlines that fly nonstop from Portland to Ontario. They are: Alaska Airlines, Frontier and Southwest. The cheapest price of all airlines flying this route was found with Frontier at $52 for a one-way flight. On average, the best prices for this route can be found at Frontier.

How many flights are there between Portland and Ontario per day?

Each day, there are between 4 and 6 nonstop flights that take off from Portland and land in Ontario, with an average flight time of 2h 19m. The most common departure time is 4:00 pm and most flights take off in the afternoon. Each week, there are 35 flights. The most frequent day of departure is Sunday, when 17% of all weekly flights depart. The fewest flights depart on a Monday.

Which cabin class options are there for flights between Portland and Ontario?

The average price of flights for each cabin class for the route found by users searching on KAYAK over the last 2 weeks.
There are 3 cabin class options for the route. These are Business, Economy and Prem Economy. Perform a search on KAYAK to find the latest prices and availability for all cabin fares, which differ across airlines.

How long does a flight from Portland to Ontario take?

Nonstop flights from Portland generally make it to Ontario in 2h 13m. The flying distance between the two cities is 839 miles.

What’s the earliest departure time from Portland to Ontario?

Early birds can take the earliest flight from Portland at 8:17 am and will be landing in Ontario at 10:40 am.

What’s the latest departure time from Portland to Ontario?

If you prefer to fly at night, the latest flight from Portland to Ontario jets off at 8:30 pm and lands at 10:50 pm.

Good to know

Low season

January

High season

April

Cheapest flight

$39
Best time to beat the crowds with an average 3% drop in price.
Most popular time to fly and prices are also 45% lower on average.
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
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.

FAQs for booking flights from Portland to Ontario

  • Does ONT have an on-site car rental facility?

    ONT does not have an on-site car rental facility. However, it does have an off-site car rental facility which is connected to the airport by a free airport shuttle service. This car rental facility houses car rental agencies like Alamo, Budget, Avis, Enterprise, Thrifty, Payless, and National.

  • Is there any other airport that serves Ontario apart from ONT?

    Apart from ONT, Ontario is also served by Los Angeles International Airport (LAX). There are no direct means of public transportation between Ontario and LAX. Hence, to cover the distance between these two points, you'll first need to board a taxi or bus from the airport to Los Angeles' city center. At the city center, you can then board a bus or a train to Ontario.

  • Does PDX have any unique services?

    At PDX, you can enjoy relaxing spa services at The Dragontree Spa. Open from 9 am to 8 pm from Sunday to Friday and 9 am to 6 pm on Saturdays, this spa offers a wide range of spa services at affordable rates. Given that it boasts experienced professionals, you'll receive quality services at this Concourse C spa.

  • Does PDX have a lounge?

    If you'd like to relax in a lounge at PDX as you wait for your flight to ONT, you can check out the amazing Alaska Lounge. Situated near Gate C5 in Concourse C, this lounge boasts comfortable seats, clean washrooms, snacks, and beverages. Given that it is not affiliated with any airline, you can enter this lounge regardless of the airline you're traveling with, provided you pay its entry fee.

  • What is the cheapest flight from Portland to Ontario?

    In the last 3 days, the lowest price for a flight from Portland to Ontario was $39 for a one-way ticket and $48 for a round-trip.

  • Do I need a passport to fly between Portland and Ontario?

    No, a passport isn't needed to fly from Portland to Ontario. However, local authorities might ask for an official ID.

  • Which airports will I be using when flying from Portland to Ontario?

    On your way to Ontario, you’ll fly out from Portland. You’ll be landing at Ontario.

  • Which airlines offer Wi-Fi service onboard planes from Portland to Ontario?

    Alaska Airlines, Delta, and American Airlines offer inflight Wi-Fi service on the Portland to Ontario flight route.

  • Which aircraft models fly most regularly from Portland to Ontario?

    The Airbus A321-100/200 is the aircraft model that flies most regularly on the Portland to Ontario flight route.

  • Which airline alliances offer flights from Portland to Ontario?

    oneworld is the only airline alliance operating flights between Portland and Ontario.

  • On which days can I fly direct from Portland to Ontario?

    There are nonstop flights from Portland to Ontario on a daily basis.

  • Which is the best airline for flights from Portland to Ontario, Alaska Airlines or Delta?

    The two airlines most popular with KAYAK users for flights from Portland to Ontario are Alaska Airlines and Delta. With an average price for the route of $318 and an overall rating of 8.0, Alaska Airlines is the most popular choice. Delta is also a great choice for the route, with an average price of $368 and an overall rating of 8.0.

  • How does KAYAK find such low prices on flights from Portland to Ontario?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Portland to Ontario.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Portland to Ontario?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Ontario from Portland is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Portland to Ontario?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Ontario with an airline and back to Portland with another airline. Booking your flights between Portland and ONT can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Portland to Ontario?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Ontario from Portland up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

See more FAQs

KAYAK’s top tips for finding a cheap flight from Portland to Ontario

  • Looking for a cheap flight? 25% of our users found flights on this route for $52 or less one-way and $99 or less round-trip.
  • On the date you're scheduled to fly to Ontario, you should aim to be at Portland International Airport (PDX) at least 2h ahead of your departure time. Getting to the airport this early will enable you to go through the airport's security checkpoints in time for your flight. It will also allow you to check out the superb destinations available at the airport.
  • While waiting for your flight to Ontario International Airport (ONT), you can privately breastfeed your baby. This is because this remarkable airport features clean, spacious, and well-equipped breastfeeding rooms near the airport South Lobby and Gate D2.
  • In case you're traveling with older kids, you can let them enjoy themselves in one of PDX's children's play areas. Located near Gate C17 in Concourse C and gate D7 in Concourse D, these play areas feature child-proof playgrounds and various toys.
  • At ONT, you can easily withdraw the cash you need, as this airport features several ATMs. The ATMs are located on the Upper and Lower levels of Terminals 2 and 4, near the front entrance of the International Terminal and in the Rental Car Facility.
  • If you'd like assistance getting emergency housing, transportation assistance, or wiring some cash, visit Traveler's Aid, a non-profit organization that assists stranded and distressed passengers. In order to cater to as many people as possible, this organization has two branches at ONT. One is between the baggage claim and escalator in Terminal 2, while the other is a short distance from the baggage claim in Terminal 4. Both operate from 9 am to 9 pm.
See more tips

Prefer to fly non-stop from Portland to Ontario?

Find which airlines fly direct from Portland to Ontario, which days they fly and book direct flights.

Nonstop departures

Portland to Ontario

Monday

Alaska Airlines, British Airways, Frontier

Alaska Airlines, British Airways, +1 more

Tuesday

Alaska Airlines, British Airways, Frontier

Alaska Airlines, British Airways, +1 more

Wednesday

Alaska Airlines, British Airways, Frontier

Alaska Airlines, British Airways, +1 more

Thursday

Alaska Airlines, British Airways, Frontier

Alaska Airlines, British Airways, +1 more

Friday

Alaska Airlines, British Airways, Frontier

Alaska Airlines, British Airways, +1 more

Saturday

Alaska Airlines, British Airways, Frontier

Alaska Airlines, British Airways, +1 more

Sunday

Alaska Airlines, British Airways, Frontier, +1 more

Alaska Airlines, British Airways, +2 more

See more direct flights

Nonstop returns

Ontario to Portland

Monday

Alaska Airlines, Frontier

Alaska Airlines, Frontier

Tuesday

Alaska Airlines, Frontier

Alaska Airlines, Frontier

Wednesday

Alaska Airlines, Frontier

Alaska Airlines, Frontier

Thursday

Alaska Airlines, Frontier

Alaska Airlines, Frontier

Friday

Alaska Airlines, Frontier

Alaska Airlines, Frontier

Saturday

Alaska Airlines, Frontier

Alaska Airlines, Frontier

Sunday

Alaska Airlines, Frontier, Southwest

Alaska Airlines, Frontier, +1 more

See more direct flights
See more direct flights

Top 5 airlines serving from Portland to Ontario

 
See real verified KAYAK customer reviews for airlines flying from Portland to Ontario. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Portland to Ontario? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
8.0
Alaska AirlinesOverall score based on 9288 reviews
7.3Food
8.2Boarding
7.9Comfort
7.3Entertainment
8.6Crew
Airline reviews

We brought our own food on board. Did not use entertainment. Airport agents knew my husband arrived in a wheelchair and they moved us forward in the cabin from assigned seats. Such a gift! We requested wheelchair assistance when we reserved the flights, but the request disappeared from all 4 legs of round trip. However, very easy to add at the airport.

10.0 ExcellentAnonymous, Jun 2024PDX - JFK
Read more about Alaska Airlines reviews

We brought our own food on board. Did not use entertainment. Airport agents knew my husband arrived in a wheelchair and they moved us forward in the cabin from assigned seats. Such a gift! We requested wheelchair assistance when we reserved the flights, but the request disappeared from all 4 legs of round trip. However, very easy to add at the airport.

We arrived almost 1/2 hour early at Burbank......we sat and waited for gate to open and then for stairs to arrive to deboard us. That took almost an hour. The flight was beautiful....the arrival at Burbank was frustrating.

Seats lack shoulder and elbow room. The lady next to me was short and slightly heavy with knee problems, she kept jabbing me with her elbow while playing her game on her phone for 2 hours, the duration of the whole flight. It was frustrating and annoying! I was in the middle seat, there was no space to adjust to avoid her arm jabbing me.

Being seated next to the engine was awful! I was nauseous the entire trip from pre-take-off, flying to landing. The engine vibration was very strong!

When Alaska uses Sky west which it does on many flights in and out of PDX, The planes use " Gates" that are outside of the terminal and are a long walk to and from the planes. Also you must board and deplane using a ramp. I have difficulty walking so going into Portland was difficult. Going out was worse . We walked to nearly the emd of this "Tunnel " only to be told there was a problem with the plane so we had to take the long walk back to to the terminal and then back out again when the plane was fixed. I will look for a Southwest flight next time I go to Portland

Great! No issues at all. Friendly staff, on time flight, and smooth, comfortable flight.

The airline itself was extremely comfortable and the staff were wonderful. The communication was excellent amongst the pilots and flight attendants and the passengers. I was throughly impressed by the cleaning crew that came on the plane immediately to ready it for the next flight. I have flown a bunch of times post Covid pandemic and have never seen this! I gave the “okay” rating for the food and entertainment because I didn’t order food and there wasn’t entertainment offered through the plane (only your personal devices).

The flight both ways was pleasant and uneventful. The staff was friendly, accommodating, and overall very helpful.

The one stewardess was rude about helping me put my bag in overhead….she said “ Is it heavy ?” (I am 73 yrs old)

That flight was a terrible experience. Flying to Portland was not much better. I will not ever fly Alaska Airlines again. I have a temporary disability due to recent neurocervical surgery. I cannot lift heavy things, I cannot walk long distances without vertigo and fainting, and I required wheelchair assistance. I showed up an hour and a half before my flight. The wheelchair queue assistance person was rude and chastised me for showing up so late. An older couple showed up almost an half an hour AFTER me, and she was sweet as pie to them. There was a long wait for wheelchair assistance as they were backed up. When I got to the gate, the gate attendants were rude and again, I got chastised for being late, even though it was not my fault they were backed up. When I asked for help with my bags and boarding the plane, they told me it was my fault and they were not obligated to help me. I was treated like a big inconvenience because I had a wheelchair and I couldn't "just walk." One of them literally rolled her eyes at me. I kept silent, because I just wanted to get home and I felt like they would not let me on if I complained, but I was practically crying. When I got down to the door to board, the wheelchair person left, and I asked the flight attendants for help. They said, well, you'll have to stand there and wait, even though I said I couldn't stand very long, and another passenger said, "Oh just let me do it" and helped me down. I tried not to bother the inflight attendants, because everytime you did, they acted exasperated and stressed out. I paid $7.50 for a bag of Pirate Booty and a tiny turkey beef stick for dinner. I needed wifi to work during the flight, and it kept crashing on me repeatedly and resetting my online work, costing me valuable time. I had to pay twice to get it on my laptop and phone, but I did get a refund when I returned. When I got to NY, the Portland agents had not arranged for a wheelchair to meet me and I had to stand for fifteen minutes waiting for the very nice young man who found an empty chair and had to wheel me and another passenger with carry on luggage to the front of JFK all by himself. Never, ever again. You all should be ashamed of how you treat people with disabilities. The other people who needed assistance to get on this flight did not fare much better than me, from what I could see.

It was good until there was a 3 hour delay because there was not any pilots to fly the plane.

Had to change aircraft due to a faulty door. Surprisingly it only caused about an hour and a half of delay. Delta handled this situation as well as can be expected.

Your crew could maybe answer the call bell at least one of the times I pressed it. I pressed it first time with 2.5 hours left in our flight bc my partner was hungry and wanted a sandwich. We finally got the sandwich with 40 mins left in the flight.

The Flight crew didn’t serve us until about 1.5 hours into the flight because of turbulence but after it ended it was fine to move around. They served us water only and snacks and then NEVER, NOT ONE TIME came through to collect trash until right before landing about 1.5 hours later. There was absolutely no need for that. They crew was just standing around talking and visiting with each other and really never tried to see if we might want something besides water or even try to come pick up trash. This is VERY unusual for a Delta flight but it was not what I would have expected for a 4 hour flight.

There was a loud squeaky sound the whole time we were flying.

Had a broken tray in business class. Crew just shrugged it off.

I didn’t like that I could not select my seat and was assigned a seat when I checked in at LAX

Great experience overall. Check in at Austin was congested as they only have about 6 check in kiosks, one was broken, and there was a lot of Spring Break travelers.

Bag drop off was slow and annoying. Only 2 agents at the entire delta desk, and no one directing traffic for what line to be in, many confused people slowed down the process. Boarding was fine. Seats in Delta comfort plus were fine. Snacks were great! Definitely a bonus. The entertainment system was awful — old, slow, not responsive, and completely unable to play games due to some kind of error. But on the other hand, thank you to Delta for the free WiFi. That made it better.

Everything was very good other than I had selected a specific seat when I booked the flight and they changed it once I checked-in the day before my flight. I was still in first class but lost my aisle seat for a window seat. Being tall, the aisle offers more comfort so I always select an aisle seat.

Crew was very cooperative and professional. Passenger's first checked in bag should be free.

Flight was delayed due to the late arrival of the catering truck, which is quite unacceptable. There was a beverage service, but no pretzel, or cookie, or nuts were served in coach.

Flighty delayed on boarding - then group 1 had to check their carry on bags but groups 3 and beyond could carry bags on - very inconvenient for weekend business trip with no checked baggage. Then delayed on the runway - before take off. No communication from pilot on why or how long. Wifi/Entertainment didn't work for 4+ flight. Upon arrival, attendants announced wrong carousel for baggage claim - everyone was waiting at the wrong place for their checked bags. This was a mess united!

Dinner was okay but the breakfast was not eatable on the flight San Francisco to Zurich.

Check in etc was very good. As for on the plane, it was like flying in a freezer. It was so cold, i have flown for years and never been so cold on a plane. Staff on board said its always cold when flying which is a load of rubbish. They wouldnt put any heating on and now i have the flu because of this .

I’ve had a couple flights this week on United that were delayed by an hour or more

Should have video screens Plane audio was poor and without wired connection hard to understand crew. Should serve more than just cups of water and pretzels on six hour flight. Did not see crew rest of flight. Fix charging sockets to retain charging blocks.

Generally good but there wasn’t any staff available when my luggage didn’t appear at baggage claim in Fresno. It took about half an hour to locate a staff member to open up the locked room where it was being kept.

Do not like the feeling of being in the basic economy. Everyone should feel good no matter what.

Our original business class flight was cancelled so we not only downgraded but we were also spread out across the plane not sitting together in separate middle seats. My poor kids were scared and couldn’t see me on the flight and the crew wasn’t sensitive to the situation and what the airlines did to us. Very dissatisfied with United airlines.

My flight was delayed then cancelled My elder parents were upstairs waiting for a spirit rep to bring them downstairs to where my sister waited for 2 hours. My elder parents are not able to walk . My dad was wet of urine from where he could not hold it .waiting for some spirit personnel to wheel chair them back down stairs to where my sister was waiting for them for two hours . That is not ok

Terrible leg room, seats don’t recline, delayed flight, and even water isn’t free onboard

Flight was good and clean but delayed over an hour on the return flight.

It was nice! There was a very unhappy child in front of us and the flight attendant did a great job calming the child. I was impressed.

I got a one-way, last-minute nonstop flight from PDX to BWI for only $125. Yes, I got nicked $79 more for a checked suitcase and $89 more for the BIG SEAT option, but it was worth it, even with $4.50 for coffee and $10 for a snack (the latter no different than any other airline). The grand total was still less flying on any other airline.

They stuck us with multiple extra fees. I will never fly spirit again

The guy with severe body odor sat next to me. For the whole duration of the flight it was a torture. The airline should have better policy on limiting people with bad body odor to board the flight. Passengers should not be the ones to endure bad odor for the whole duration of the flight. The airline should be e the one to ensure decent air quality for ever passenger.

They charged me 212.00 for a heavy check in bag at the gate. The pricing and process was so confusing - as if it was designed to purposefully gouge customers who need to board plane. That experience combined with the outrageous price charged will prevent me from ever flying Spirit again. And I’ll be sure to tell the story to anyone who cares to hear.

The text told me it was changed to Terminal E and Gate D5. But with no one on site to ask questions there was confusion on where to go as all the gates were E's. Then we took the skyline to the D area. We left to get something to eat. No announcement was made but my daughter happened to asked and they told her our gate was moved to D12. I will not fly Spirit again.

The agent at the check in desk was absolutely rude. The rest of the team after that was good, but the check in process at LAS was miserable. The woman at the desk spoke like we were stupid and was rude throughout the process.

They never updated the boarding pass on their apps to show their delay

Online check-in was not user-friendly. Too many fees, not cost effective.

They wouldn’t let us on the flight even tho we were an hour early. No refund not even our bags that were prepaid

I brought a ticket and car rental through Travelocity. There was no where to add a KTN. So I thought i’d add it by looking up ticket on frontier website. I tried 3 times with the frontier chat bot to add my KTN it never updated my boarding pass. So then I tried showing up early to do it in person at the airport. The first employee update my ktn in the system and gave me a new boarding pass. I was sent back by tsa to join regular line. Then I was told to add my Ktn. It would cost me $25 extra. Given the length of the cue I did pay. Congratulations! BUT I will NEVER fly frontier again. Plus the plane was very old. It had actual ashtrays and old looking tray backs. Worst travel experience ever. Im warning my friends and family not to use frontier ever.

I did not enjoy the trip home on Frontier for several reasons: there is too much cost besides the flight, which was more than I would normally pay, then having to pay for luggage, and carry-on, seat (if you want to reserve when booking) then you must pay over $3 for a can of soda, and $4 for a snack. A cup of water is free.

Did not realize seats did not recline. Best to travel in an exit row... No question

I strongly dislike Frontier. I find them barebones, the seats not particularly comfortable, the nickel and diming is maddening, the app is TERRIBLE - super confusing to navigate, and the last 4 frontier flights I have flown have been on AVERAGE 2 hours late, one ruining a fancy night out in Vegas with reservations made well in advance, which was nodded to with a measly 5000 miles, which translates to almost nothing. At least credit a free checked bag or something.

8 hr delay. had to buy another ticket with another airline

Four and a half hour delay in total. What frustrates me most is the poor communication and disorganization.

I appreciated the upgrade to free cary-on bag and seat selection at no charge

Book cheap flights from Portland to Ontario

Recent one-way flight deals

 
Only flying one-way? Below are some of the best one-way flight deals from Portland to Ontario found on KAYAK in the last 72 hours.
7/16Tue
nonstopFrontier
2h 20mPDX-ONT
$39
9/3Tue
nonstopFrontier
2h 21mPDX-ONT
$40
9/3Tue
1 stopUnited Airlines
4h 07mPDX-ONT
$88
8/20Tue
1 stopAlaska Airlines
4h 30mPDX-ONT
$98
7/17Wed
1 stopAlaska Airlines
6h 14mPDX-ONT
$103
8/21Wed
1 stopUnited Airlines
4h 07mPDX-ONT
$123
8/29Thu
2 stopsDelta
9h 47mPDX-ONT
$167
8/24Sat
2 stopsDelta
8h 31mPDX-ONT
$227
6/21Fri
2 stopsAmerican Airlines
18h 27mPDX-ONT
$395
9/3Tue
2 stopsAmerican Airlines
11h 24mPDX-ONT
$445

Search by stops

Search by airline

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Last minute flights from Portland to Ontario

Last minute flight, train and bus deals

 
These last-minute flight deals are the cheapest flights found on KAYAK in the last 72 hours for flights from Portland to Ontario that are departing in the next 10 days.
6/19Wed
nonstopFrontier
2h 15mPDX-ONT
8/20Tue
nonstopFrontier
2h 13mONT-PDX
$178
6/19Wed
nonstopFrontier
2h 15mPDX-ONT
7/4Thu
nonstopFrontier
2h 15mONT-PDX
$188
6/18Tue
nonstopFrontier
2h 15mPDX-ONT
6/22Sat
nonstopFrontier
2h 15mONT-PDX
$208
6/19Wed
nonstopFrontier
2h 15mPDX-ONT
7/2Tue
nonstopFrontier
2h 15mONT-PDX
$226
6/20Thu
nonstopFrontier
2h 15mPDX-ONT
7/1Mon
nonstopFrontier
2h 15mONT-PDX
$227
6/19Wed
multi-stopDelta
4h 42mPDX-ONT
8/20Tue
multi-stopDelta
6h 27mONT-PDX
$283
6/19Wed
multi-stopUnited Airlines
4h 50mPDX-ONT
7/4Thu
multi-stopUnited Airlines
4h 53mONT-PDX
$306
6/18Tue
multi-stopUnited Airlines
6h 33mPDX-ONT
7/3Wed
multi-stopUnited Airlines
4h 04mONT-PDX
$376
6/18Tue
multi-stopUnited Airlines
6h 33mPDX-ONT
6/19Wed
multi-stopUnited Airlines
3h 52mONT-PDX
$412
6/19Wed
multi-stopDelta
4h 42mPDX-ONT
6/20Thu
multi-stopDelta
6h 31mONT-PDX
$454

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Portland - Ontario Flights

Departure:

Portland (PDX)United States

Destination:

Ontario (ONT)United States

Return flight deals:

Ontario - Portland

Cabin classes:

$606
$542
$49