Latest deals
Insights
FAQs
Reviews
Price Alerts

Cheap flights from Ontario to Portugal from $266

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Ontario to Portugal departing on 8/2. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

Discover deals from 900+ travel sites with momondo.

Save money when you book flights with momondo

Big names and deals

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

Find the cheapest flights from Ontario to Portugal

Cheap round-trip flights

Enter your travel dates to find the best prices.
United Airlines Logo
8:00 am - 9:30 am
ONT
-
OPO
17h 30m
2 stops
United Airlines Logo
6:00 am - 10:18 pm
OPO
-
ONT
23h 18m
2 stops
$493United Airlines
Tue, Mar 3 - Fri, Mar 13
Delta Logo
6:00 am - 10:30 am
ONT
-
OPO
20h 30m
2 stops
Delta Logo
5:00 am - 10:33 pm
OPO
-
ONT
24h 33m
2 stops
$495Delta
Mon, Mar 2 - Wed, Mar 11
United Airlines Logo
8:00 am - 8:10 am
ONT
-
LIS
16h 10m
2 stops
United Airlines Logo
5:00 am - 5:41 pm
LIS
-
ONT
20h 41m
2 stops
$500United Airlines
Tue, Feb 24 - Tue, Mar 3
United Airlines Logo
8:00 am - 8:10 am
ONT
-
LIS
16h 10m
2 stops
United Airlines Logo
5:00 am - 8:50 pm
LIS
-
ONT
22h 50m
2 stops
$501United Airlines
Tue, Mar 3 - Wed, Mar 11
United Airlines Logo
5:00 am - 10:15 am
ONT
-
LIS
21h 15m
3 stops
United Airlines Logo
6:10 am - 12:48 pm
LIS
-
ONT
37h 38m
2 stops
$502United Airlines
Tue, Mar 3 - Tue, Mar 10
United Airlines Logo
6:05 am - 8:20 am
ONT
-
LIS
18h 15m
2 stops
United Airlines Logo
6:15 am - 8:36 pm
LIS
-
ONT
22h 21m
2 stops
$503United Airlines
Tue, Apr 14 - Tue, Apr 28
British Airways Logo
4:52 pm - 10:05 am
ONT
-
LIS
33h 13m
2 stops
British Airways Logo
6:45 pm - 6:37 pm
LIS
-
ONT
31h 52m
2 stops
$509British Airways
Tue, Apr 28 - Wed, May 6
United Airlines Logo
6:05 am - 8:20 am
ONT
-
LIS
18h 15m
2 stops
United Airlines Logo
10:25 am - 9:50 pm
LIS
-
ONT
19h 25m
2 stops
$513United Airlines
Tue, Apr 14 - Thu, Apr 23
Multiple Airlines Logo
6:00 am - 10:30 am
ONT
-
OPO
20h 30m
2 stops
Multiple Airlines Logo
4:10 pm - 4:28 pm
OPO
-
ONT
31h 18m
2 stops
$598Multiple Airlines
Mon, Mar 2 - Mon, Mar 16
British Airways Logo
10:59 am - 7:30 pm
ONT
-
OPO
24h 31m
2 stops
British Airways Logo
9:25 pm - 9:59 pm
OPO
-
ONT
32h 34m
2 stops
$673British Airways
Tue, Apr 28 - Sun, May 17

British Airways flights from Ontario to Portugal

Our best British Airways deals on Ontario to Portugal flight tickets
British Airways
Apr 28
ONT4:52 pmOntario
33h 13m
2 stops
LIS10:05 amLisbon Humberto Delgado
May 6
LIS6:45 pmLisbon Humberto Delgado
31h 52m
2 stops
ONT6:37 pmOntario
$509
British Airways
Apr 28
ONT4:52 pmOntario
33h 13m
2 stops
LIS10:05 amLisbon Humberto Delgado
May 12
LIS6:45 pmLisbon Humberto Delgado
29h 37m
2 stops
ONT4:22 pmOntario
$541
British Airways
Mar 10
ONT3:19 pmOntario
23h 26m
2 stops
LIS9:45 pmLisbon Humberto Delgado
Mar 17
LIS7:05 amLisbon Humberto Delgado
22h 44m
2 stops
ONT10:49 pmOntario
$588

United Airlines flights from Ontario to Portugal

Our best United Airlines deals on Ontario to Portugal flight tickets
United Airlines
Mar 3
ONT8:00 amOntario
17h 30m
2 stops
OPO9:30 amPorto
Mar 10
OPO6:00 amPorto
21h 50m
2 stops
ONT8:50 pmOntario
$493
United Airlines
Feb 24
ONT8:00 amOntario
16h 10m
2 stops
LIS8:10 amLisbon Humberto Delgado
Mar 3
LIS5:00 amLisbon Humberto Delgado
20h 41m
2 stops
ONT5:41 pmOntario
$500
United Airlines
Mar 3
ONT8:00 amOntario
16h 10m
2 stops
LIS8:10 amLisbon Humberto Delgado
Mar 11
LIS5:00 amLisbon Humberto Delgado
22h 50m
2 stops
ONT8:50 pmOntario
$501

momondo Fare Finder

 
Customize your flight search to find flights from Ontario to Portugal that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated February 5, 2026.
Use the filters below to find and compare flights from Ontario to Portugal that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

OntarioPorto

ONT - OPO

ONTOPO

Ontario

Tue 3/3

8:00 am-9:30 am

2 stops17h 30m

Porto

Fri 3/13

6:00 am-10:18 pm

2 stops23h 18m

$493

OntarioPorto

ONT - OPO

ONTOPO

Ontario

Mon 3/2

6:00 am-10:30 am

2 stops20h 30m

Porto

Wed 3/11

5:00 am-10:33 pm

2 stops24h 33m

$495

OntarioLisbon

ONT - LIS

ONTLIS

Ontario

Tue 2/24

8:00 am-8:10 am

2 stops16h 10m

Lisbon Humberto Delgado

Tue 3/3

5:00 am-5:41 pm

2 stops20h 41m

$500

OntarioLisbon

ONT - LIS

ONTLIS

Ontario

Tue 3/3

8:00 am-8:10 am

2 stops16h 10m

Lisbon Humberto Delgado

Wed 3/11

5:00 am-8:50 pm

2 stops22h 50m

$501

OntarioLisbon

ONT - LIS

ONTLIS

Ontario

Tue 3/3

5:00 am-10:15 am

3 stops21h 15m

Lisbon Humberto Delgado

Tue 3/10

6:10 am-12:48 pm

2 stops37h 38m

$502

OntarioLisbon

ONT - LIS

ONTLIS

Ontario

Tue 4/14

6:05 am-8:20 am

2 stops18h 15m

Lisbon Humberto Delgado

Tue 4/28

6:15 am-8:36 pm

2 stops22h 21m

$503

OntarioLisbon

ONT - LIS

ONTLIS

Ontario

Tue 4/28

4:52 pm-10:05 am

2 stops33h 13m

Lisbon Humberto Delgado

Wed 5/6

6:45 pm-6:37 pm

2 stops31h 52m

$509

OntarioLisbon

ONT - LIS

ONTLIS

Ontario

Tue 4/14

6:05 am-8:20 am

2 stops18h 15m

Lisbon Humberto Delgado

Thu 4/23

10:25 am-9:50 pm

2 stops19h 25m

$513

OntarioPorto

ONT - OPO

ONTOPO

Ontario

Mon 3/2

6:00 am-10:30 am

2 stops20h 30m

Porto

Mon 3/16

4:10 pm-4:28 pm

2 stops31h 18m

$598

OntarioPorto

ONT - OPO

ONTOPO

Ontario

Tue 4/28

10:59 am-7:30 pm

2 stops24h 31m

Porto

Sun 5/17

9:25 pm-9:59 pm

2 stops32h 34m

$673

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

See travel insights to Portugal from

How to get the cheapest flight ticket from Ontario to Portugal

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest airline that flies from Ontario to Portugal?

United Airlines, Air Canada, and British Airways are the most popular carriers operating from Ontario to Portugal

What airlines fly to Portugal?

TAP AIR PORTUGAL, United Airlines and British Airways are the top three most popular airlines that fly to Portugal from Ontario according to our data. TAP AIR PORTUGAL is the first choice among our users, with 39% of people opting to fly with this airline when traveling to Portugal. Keep in mind that there are 18 different airlines that fly to Portugal on a routine basis, so you have a few additional options to choose from.

Cheap Ontario to Portugal flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Ontario to Portugal

Fastest flight time

16h 10m

Direct flights

None
The fastest flight from Ontario to Portugal takes 16h 10m
There are no direct flights from Ontario to Portugal. There are no popular flight routes from Ontario to Portugal.
Search flight deals

  • When did momondo last update prices for flights from Ontario Airport to Portugal?

    Prices for flights from Ontario Airport to Portugal are updated daily.

  • How many operators does momondo search for flights from Ontario Airport to Portugal?

  • How old do you have to be to fly from Ontario Airport to Portugal?

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Ontario Airport to Portugal.

  • What documentation or ID do you need to fly to Portugal?

    The travel and health documents you'll need for your trip to Portugal may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Portugal. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

Best airlines flying from Ontario to Portugal

Compare and see reviews for airlines that fly from Ontario to Portugal with momondo
Airline
Rating
Free Cancellation
Price
United AirlinesPriceFrom $515Free CancellationRating
7.4
9,236 reviews
Search United Airlines flights
DeltaPriceFrom $582Free CancellationRating
7.9
8,144 reviews
Search Delta flights

Why use momondo?

Why should I use momondo to find a flight deal from Ontario to Portugal?

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Ontario to Portugal. momondo saves you time and could save you money on your trip.

Can I find flights from Ontario to Portugal with flexible booking policies on momondo?

All flight searches from Ontario to Portugal on momondo can be filtered to show those which offer flexible booking policies.

How can momondo help me find flights from Ontario to Portugal?

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Ontario to Portugal.

I’m not ready to book a flight from Ontario to Portugal right now. Can momondo alert me if prices change?

If you are simply researching potential flights to Portugal, momondo offers a useful price alert feature which will track prices for flights to Portugal from Ontario and alert you when they change.

An easier way to manage your Portugal trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Sat 3/7
Sat 3/14
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to Portugal

Popular cities in Portugal

Popular flights according to clicks in the last 7 days on momondo
Flights to Lisbonfrom $373
Flights to Portofrom $356
Flights to Funchalfrom $407
Flights to Farofrom $385
Flights to Ponta Delgadafrom $419
Flights to Lajesfrom $475
Flights to Hortafrom $566
Flights to Pico Islandfrom $587
Flights to Porto Santofrom $422
Flights to Velasfrom $577