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Find cheap flights from Ontario to Portugal from $565

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Ontario to Portugal departing on 6/15. 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
jue. 7/4
jue. 7/11

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Best Portugal Flight Deals

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours

Lisbon
Lisbon2 stops$747
Porto
Porto2 stops$700

Good to know

Low season

February

High season

November

Cheapest flight

$565
Best time to beat the crowds with an average 32% drop in price.
Most popular time to fly and prices are also 14% lower on average.
Flight from Ontario to Lisbon

FAQs - booking Portugal flights

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

    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 Ontario to Portugal.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Portugal from Ontario 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 Ontario to Portugal?

    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 Portugal with an airline and back to Ontario with another airline.

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

    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 Portugal from Ontario up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

See more FAQs

Top tips for finding cheap flights to Portugal

  • Morning departure is around 21% more expensive than an evening flight, on average*.
*Average of the lowest prices shown in KAYAK’s search results for departures within the next 30 days

Top 5 airlines serving from Ontario to Portugal

Need help choosing which airline to fly with from Ontario to Portugal? 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
DeltaOverall score based on 10392 reviews
8.2Boarding
7.9Comfort
7.4Food
8.6Crew
8.0Entertainment
Airline reviews

There was plenty of overhead room but half of the passengers were told they had to check their carryon bags. My partner and I checked in as early as possible and our seats were split across the aisle.

4.0 OkayBrooke, Jun 2024SFO - MSP
Read more about Delta reviews

There was plenty of overhead room but half of the passengers were told they had to check their carryon bags. My partner and I checked in as early as possible and our seats were split across the aisle.

Flew first class so everything was great. But maybe because the flights were red eye, no meals were served, just chips. I flew Alaska Air 1st class at 9PM (2 hour flight) and they served beef short rib sliders!

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

I didn’t not like that I could not select my seat and ended up with the worse seat.

The landing was bad and the hostess came two times and i was sleeping but when she served the person that nexts to me I woke up and she didn’t even asked me if I need any drink or snacks two times!!!!

Plane was late because of a mechanical malfunction and the food listed as available was not. Flight attendants seem over worked and under paid. They just done seem happy. And that can be seen in their faces.

Waited 3 hours on a plane to de-ice due to manpower issues. Waited another hour and a half once we landed because of a gate issue. Missed my connections. Created. A total of 13 hours of delay.

Great, on time departure, friendly and accommodating crew, great leg room, Smith flight

Plane was turned around due to fog half way into the flight, Delta did not properly direct passengers to stay on same flight and instead failed to properly rebook on Alaska

Honestly, I didn’t expect that I will experience this long time wait during the check in. There was only one person who was taking care of the passengers for the economy class and it took us to wait about one hour to do our check i. As a result we barely get to the airplane as the gate was at the end of the airport. That is totally not professional where one crue is working at the registration desk with economy and 3-4 crues are helping for the business class.

Everything was pretty good except for food. They need to improve on it compared to other airlines.

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.

I had a great flight. Everything went smoothly and the flight arrived early.

Aisle chair was good and liked the foot bar preventing you from putting your foot in the isle, The breakfast on this international flight to Zurich was horrible (Europeans, specially, used to good food) may make this a dealbreaker for booking with United Airlines again. I agreed with my Spanish fellow passenger.

On time take off…US cabins look tired and need of refresh!

Backpack should NOT allowed put in the flight bin , only put it under the seat. I can't find space put my carry on luggage!!! and I pay for it ! that was very bad experience

I paid $380 for my one-way ticket from California to Minnesota. The fair did not include online check-in. I received instructions from their app to check in at a kiosk. At the kiosk, the boarding pass would not print until an actual person came to verify that I had a personal item and not a carry-on item, On the plane, the person next to me was drunk and allowed to continue to order alcohol. United is garbage I’d rather fly spirit.

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

Terrible! The plane was old and you are required to connect your own device to their Wi-Fi rather than have entertainment options in the back of the seat in front of you. The Wi-Fi went out during the flight and there was only one plug for the devices every two seats. Three out of five surrounding my family did not work. The seats and spaces under them were so small I could not fit my backpack, which I’ve always brought on flights and fit before no problem. The crew were unpleasant and patronizing.

Due to one crew member not showing up to work, our flight was significantly delayed causing us to miss our connecting flight in Houston to Mississippi causing us to be delayed by more than 6 hours and missing our event all together. Very disappointing. All because ONE crew member called in sick. United did grant us a $15 meal voucher, which was a small but appreciated concession that I wasn’t able to use because I ordered my lunch and paid for it before applying the concession, and the staff said it was too late to use it. Ugh! We also had a TWO delay coming back from Mississippi, but that was on American Airlines and it was due to weather, so not their fault. Anyway, not at all impressed with United’s handling of our flight and the HUGE disappointment of missing our important family event for our 90 year old mother. All that money and all that stress and emotions for nothing. Having to wait the hour to bring an employee from LAX seemed like something that should not have happened. Why don’t you have a local back-up? Santa Ana is not a little airport in a rural area.

Flight was 1/2 hour delayed leaving Phoenix. Otherwise it was an average flight. Flight crew on this trip was very nice.

Horrible - they lied to me about baggage & boarding, even though I specifically spoke to their agents the day before my flight about my issue. When I showed up they did not let me board and stranded me at my airport until I bought a new flight with money I did not have to spend.

Not sure why JAL partnered with American Airlines because their service is no where near similar. Flight attendants were not friendly and didn’t smile. Food was horrible…

The experience was great and much better than the flight going out. of course I was in first class but the service was excellent

Comfort of seats, ease of boarding. Food selection could be better

Food options were limited which is absolutely embarrassing for a Flight of this size The staff did not come around as much and I am not accustomed to such poor service from American Airlines Drinks I believe were limited to soda and water

Crew were attentive and friendly. Flight was smooth and early! I enjoyed the less crowded plane. Thank you!

We are gluten free, there were not any available complimentary gluten free options.

No meal on a cross country flight? SFO-MiA is pretty much the definition of a coast to coast flight. No meal provided. Sky high wi-fi rates too. Stop nickel and diming your customers.

The staff was unprofessional and didn’t communicate very well. The boarding process was very disheveled, potentially due to a power outage the previous day but there was no contingency plan to properly get passengers boarded the following day. Once boarded the aircraft stayed on the tarmac for over 45 minutes due to high winds. The communication was sporadic but an announcement was finally made an additional 30 minutes later that the flight was cancelled but we couldn’t get off the plane. Prior to deplaning one of the gate agents came on the plane and made an announcement for everyone to pickup their checked bags and take a card to rebook a new reservation because they didn’t have adequate staff. Flights were missed, passengers went to different airports and there was little to no assistance from AA.

No meal. Flight crew was wonderful, happily finding me storage for my guitar. THANK YOU!!!

Flight was delayed for almost 3 hours. Communication of gate change was poor. Email and screen said one gate and it was a different gate from that. Gate changed first to 64 B and then to 64 C. Originally it was 68B. 64C was not communicated properly!

Plenty of room in the exit row. Sat on the plane an hour before taking off.☹️ Landed late and had to wait for gate availability.

Flight was on time early arrival better entertainment good staff.everything was excellent

They canceled the flight on us very close to the flight date .

My experience was pretty frustrating because the first leg of my flight on United (though booked through Air Canada) was delayed causing me to miss my connecting flight on Air Canada. This could have been an easy solve as there was a direct flight later that morning via Air Canada that they easily could have put me on which would have only gotten me to my destination 2 1/2 hours later but because United and Air Canada don’t seem to have good communication they gave me the run around both telling me to talk with the other which I did three times to no avail. I ended up taking the delayed flight and getting on a new connecting flight which ended up getting me to my destination 6 hours later and I missed the event I was planning to go to this evening.

Everything went smoothly and as expected. We were on time and one flight arrived early.

This is not a Business Class equipped airplane and even the crew apologize before take over BUT BUT Air Canada charged full business class fare

Very good other than we have to wait for one crew and we’re delayed and the pilot and his co- pilot has to make a difference to be right on time arrival. Disappointed about no food service also.

Due to a strike taking place with the airline, it negatively impacted my flight in multiple ways. My flight was delayed over 2 hours and the food served was mediocre at best.

Awful. Delay, lost vacation time and travel time now more than 24h

Awful. Flight delayed and we missed our long flight to Rome. It has been a nightmare and we have still not arrived. It was NOT a weather delay, just poor planning by AA

Boarding was as fast and efficient as possible. The flight crew were amazing and extremely friendly. We enjoyed our flight.

Very bed boarding, there was overbooked and make a lot of problems and noises

There was a problem in the luggage because there were not porters

On my way from Chicago to London, I was seated next to a quite heavy passenger. I could barely move. BA should have ensured that overweight customers are placed in comfortable seats and not to penalize also other passengers because BA is not willing to accommodate these passengers and their needs. No respect at all.

The flight as far as timings go was excellent. Unfortunately we ended up sat with someone on a night flight who had been drinking alcohol before boarding and BA staff were happily serving him more alcohol. He was very drunk which made our flight uncomfortable and awkward. My partner had this person lying on him whilst asleep. Alcohol should be served minimally. If there had been an emergency this person would not have been in a fit state to act accordingly.

First time flying with BA and I will do it again. Staff at airport and on board were very nice and helpful

they are improving. The crew from Charlotte to Tampa was outstanding. SMILING and trying to be helpful with the customers.

Wonderful service and very comfy in the bulkhead in Economy Plus! Delicious food.

Book cheap flights from Ontario to Portugal

Recent round-trip flight deals

11/5mar.
2 stopsDelta
19h 05mONT-OPO
12/10mar.
2 stopsDelta
25h 28mOPO-ONT
$700
8/4dom.
2 stopsDelta
24h 54mONT-OPO
9/13vie.
2 stopsDelta
25h 16mOPO-ONT
$720
10/20dom.
2 stopsUnited Airlines
19h 45mONT-OPO
11/24dom.
2 stopsUnited Airlines
24h 21mOPO-ONT
$732
10/20dom.
2 stopsAmerican Airlines
21h 05mONT-OPO
11/24dom.
3 stopsAmerican Airlines
31h 12mOPO-ONT
$742
8/14mié.
2 stopsBritish Airways
20h 54mONT-LIS
8/21mié.
2 stopsBritish Airways
23h 07mLIS-ONT
$747
11/8vie.
2 stopsUnited Airlines
18h 10mONT-LIS
11/15vie.
2 stopsUnited Airlines
19h 37mLIS-ONT
$772
8/18dom.
2 stopsUnited Airlines
19h 45mONT-OPO
9/2lun.
2 stopsUnited Airlines
39h 21mOPO-ONT
$826
9/5jue.
2 stopsAir Canada
20h 05mONT-LIS
9/13vie.
2 stopsAir Canada
45h 20mLIS-ONT
$874
8/15jue.
2 stopsBritish Airways
20h 44mONT-LIS
8/22jue.
2 stopsBritish Airways
23h 07mLIS-ONT
$880
10/13dom.
2 stopsAmerican Airlines
16h 50mONT-OPO
10/23mié.
2 stopsAmerican Airlines
33h 21mOPO-ONT
$883

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Recent one-way flight deals

6/15sáb.
3 stops
45h 51mONT-LIS
$565
6/15sáb.
2 stops
48h 50mONT-LIS
$575
7/28dom.
2 stopsUnited Airlines
17h 45mONT-OPO
$609
7/23mar.
2 stopsUnited Airlines
20h 30mONT-LIS
$652
7/16mar.
2 stopsAir Canada
35h 45mONT-LIS
$675
6/17lun.
2 stopsAmerican Airlines
32h 51mONT-OPO
$728
7/1lun.
2 stopsAmerican Airlines
26h 26mONT-LIS
$771
7/4jue.
2 stopsBritish Airways
18h 29mONT-FAO
$1,070
6/29sáb.
2 stopsBritish Airways
32h 21mONT-LIS
$1,078
6/28vie.
3 stopsAir Canada
18h 50mONT-LIS
$1,667

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Last minute flights from Ontario to Portugal

Last minute flight, train and bus deals

6/5mié.
multi-stopAmerican Airlines
19h 05mONT-LIS
6/12mié.
multi-stopAmerican Airlines
19h 54mLIS-ONT
$1,124
6/6jue.
multi-stopAmerican Airlines
16h 55mONT-LIS
6/13jue.
multi-stopAmerican Airlines
19h 29mLIS-ONT
$1,668
6/7vie.
multi-stopIberia
23h 45mONT-OPO
6/9dom.
multi-stopIberia
35h 24mOPO-ONT
$1,874
6/9dom.
multi-stopBritish Airways
22h 06mONT-FAO
6/17lun.
multi-stopBritish Airways
19h 20mFAO-ONT
$2,487
6/9dom.
multi-stopBritish Airways
19h 30mONT-OPO
6/19mié.
multi-stopBritish Airways
19h 34mOPO-ONT
$2,766
6/7vie.
multi-stopIberia
17h 21mONT-LIS
6/9dom.
multi-stopIberia
36h 49mLIS-ONT
$3,149
6/7vie.
multi-stopUnited Airlines
19h 40mONT-PDL
6/9dom.
multi-stopUnited Airlines
16h 48mPDL-ONT
$3,185
6/7vie.
multi-stopIberia
19h 16mONT-LIS
6/9dom.
multi-stopIberia
36h 49mLIS-ONT
$3,339
6/7vie.
multi-stop
18h 55mONT-LIS
6/11mar.
multi-stop
33h 08mLIS-ONT
$9,012
6/7vie.
multi-stopUnited Airlines
18h 20mONT-LIS
6/11mar.
multi-stopUnited Airlines
18h 49mLIS-ONT
$9,034

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Ontario - Portugal Flights

Departure:

Ontario (ONT)United States

Return flight deals:

Portugal - Ontario

Cabin classes: