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Cheap flights from Portugal to Los Angeles from $558

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Portugal to Los Angeles departing on 8/26. 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
1 adult, Economy, 0 bags

Find the cheapest flights from Portugal to Los Angeles

Recent round-trip flight deals from Portugal to Los Angeles

Enter your travel dates to find the best prices.
American Airlines Logo
6:30 am - 9:11 pm
LIS
-
ONT
22h 41m
2 stops
American Airlines Logo
2:59 pm - 6:55 pm
ONT
-
LIS
19h 56m
2 stops
$852American Airlines
Thu, Nov 12 - Mon, Nov 16
American Airlines Logo
6:30 am - 9:11 pm
LIS
-
ONT
22h 41m
2 stops
American Airlines Logo
2:59 pm - 6:55 pm
ONT
-
LIS
19h 56m
2 stops
$855American Airlines
Thu, Nov 12 - Mon, Nov 16
American Airlines Logo
6:30 am - 9:11 pm
LIS
-
ONT
22h 41m
2 stops
American Airlines Logo
2:59 pm - 6:55 pm
ONT
-
LIS
19h 56m
2 stops
$859American Airlines
Thu, Nov 12 - Mon, Nov 16
American Airlines Logo
6:30 am - 9:11 pm
LIS
-
ONT
22h 41m
2 stops
American Airlines Logo
2:59 pm - 6:55 pm
ONT
-
LIS
19h 56m
2 stops
$861American Airlines
Thu, Nov 12 - Mon, Nov 16
Multiple Airlines Logo
5:00 am - 6:18 pm
LIS
-
ONT
21h 18m
2 stops
Multiple Airlines Logo
12:00 pm - 3:10 pm
ONT
-
LIS
19h 10m
2 stops
$928Multiple Airlines
Wed, Nov 18 - Wed, Nov 25
United Airlines Logo
6:15 am - 8:58 pm
LIS
-
ONT
22h 43m
2 stops
United Airlines Logo
6:00 am - 8:10 am
ONT
-
LIS
18h 10m
2 stops
$996United Airlines
Sat, Oct 24 - Tue, Nov 3
United Airlines Logo
12:25 pm - 11:06 pm
LIS
-
ONT
18h 41m
2 stops
United Airlines Logo
6:00 am - 8:10 am
ONT
-
LIS
18h 10m
2 stops
$1,006United Airlines
Thu, Dec 17 - Mon, Dec 28
United Airlines Logo
10:15 am - 9:50 pm
LIS
-
ONT
19h 35m
2 stops
United Airlines Logo
5:00 am - 9:50 am
ONT
-
LIS
20h 50m
3 stops
$1,026United Airlines
Thu, Nov 12 - Mon, Nov 16
United Airlines Logo
10:15 am - 9:50 pm
LIS
-
ONT
19h 35m
2 stops
United Airlines Logo
5:00 am - 9:50 am
ONT
-
LIS
20h 50m
3 stops
$1,030United Airlines
Thu, Nov 12 - Mon, Nov 16
United Airlines Logo
10:15 am - 9:50 pm
LIS
-
ONT
19h 35m
2 stops
United Airlines Logo
5:00 am - 9:50 am
ONT
-
LIS
20h 50m
3 stops
$1,034United Airlines
Thu, Nov 12 - Mon, Nov 16

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American Airlines flights from Portugal to Ontario

Our best American Airlines deals on Portugal to Ontario flight tickets
American Airlines
Nov 12
LIS6:30 amLisbon Humberto Delgado
22h 41m
2 stops
ONT9:11 pmOntario
Nov 16
ONT2:59 pmOntario
19h 56m
2 stops
LIS6:55 pmLisbon Humberto Delgado
$852
American Airlines
Nov 12
LIS6:30 amLisbon Humberto Delgado
22h 41m
2 stops
ONT9:11 pmOntario
Nov 16
ONT2:59 pmOntario
19h 56m
2 stops
LIS6:55 pmLisbon Humberto Delgado
$855
American Airlines
Nov 12
LIS6:30 amLisbon Humberto Delgado
22h 41m
2 stops
ONT9:11 pmOntario
Nov 16
ONT2:59 pmOntario
19h 56m
2 stops
LIS6:55 pmLisbon Humberto Delgado
$859

United Airlines flights from Portugal to Ontario

Our best United Airlines deals on Portugal to Ontario flight tickets
United Airlines
Oct 24
LIS6:15 amLisbon Humberto Delgado
22h 43m
2 stops
ONT8:58 pmOntario
Nov 3
ONT6:00 amOntario
18h 10m
2 stops
LIS8:10 amLisbon Humberto Delgado
$996
United Airlines
Dec 17
LIS12:25 pmLisbon Humberto Delgado
18h 41m
2 stops
ONT11:06 pmOntario
Dec 28
ONT6:00 amOntario
18h 10m
2 stops
LIS8:10 amLisbon Humberto Delgado
$1,006
United Airlines
Nov 12
LIS10:15 amLisbon Humberto Delgado
19h 35m
2 stops
ONT9:50 pmOntario
Nov 16
ONT5:00 amOntario
20h 50m
3 stops
LIS9:50 amLisbon Humberto Delgado
$1,026

momondo Fare Finder

 
Customize your flight search to find flights from Portugal to Ontario 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 June 25, 2026.
Use the filters below to find and compare flights from Portugal to Ontario that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

LisbonOntario

LIS - ONT

LISONT

Lisbon Humberto Delgado

Thu 11/12

6:30 am-9:11 pm

2 stops22h 41m

Ontario

Mon 11/16

2:59 pm-6:55 pm

2 stops19h 56m

$852

LisbonOntario

LIS - ONT

LISONT

Lisbon Humberto Delgado

Thu 11/12

6:30 am-9:11 pm

2 stops22h 41m

Ontario

Mon 11/16

2:59 pm-6:55 pm

2 stops19h 56m

$855

LisbonOntario

LIS - ONT

LISONT

Lisbon Humberto Delgado

Thu 11/12

6:30 am-9:11 pm

2 stops22h 41m

Ontario

Mon 11/16

2:59 pm-6:55 pm

2 stops19h 56m

$859

LisbonOntario

LIS - ONT

LISONT

Lisbon Humberto Delgado

Thu 11/12

6:30 am-9:11 pm

2 stops22h 41m

Ontario

Mon 11/16

2:59 pm-6:55 pm

2 stops19h 56m

$861

LisbonOntario

LIS - ONT

LISONT

Lisbon Humberto Delgado

Wed 11/18

5:00 am-6:18 pm

2 stops21h 18m

Ontario

Wed 11/25

12:00 pm-3:10 pm

2 stops19h 10m

$928

LisbonOntario

LIS - ONT

LISONT

Lisbon Humberto Delgado

Sat 10/24

6:15 am-8:58 pm

2 stops22h 43m

Ontario

Tue 11/3

6:00 am-8:10 am

2 stops18h 10m

$996
Quickest round-trip

LisbonOntario

LIS - ONT

LISONT

Lisbon Humberto Delgado

Thu 12/17

12:25 pm-11:06 pm

2 stops18h 41m

Ontario

Mon 12/28

6:00 am-8:10 am

2 stops18h 10m

$1,006

LisbonOntario

LIS - ONT

LISONT

Lisbon Humberto Delgado

Thu 11/12

10:15 am-9:50 pm

2 stops19h 35m

Ontario

Mon 11/16

5:00 am-9:50 am

3 stops20h 50m

$1,026

LisbonOntario

LIS - ONT

LISONT

Lisbon Humberto Delgado

Thu 11/12

10:15 am-9:50 pm

2 stops19h 35m

Ontario

Mon 11/16

5:00 am-9:50 am

3 stops20h 50m

$1,030

LisbonOntario

LIS - ONT

LISONT

Lisbon Humberto Delgado

Thu 11/12

10:15 am-9:50 pm

2 stops19h 35m

Ontario

Mon 11/16

5:00 am-9:50 am

3 stops20h 50m

$1,034

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Los Angeles from

How to get the cheapest flight ticket from Portugal to Ontario

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 Portugal to Ontario?

British Airways, TAP AIR PORTUGAL, and United Airlines are the most popular carriers operating from Portugal to Ontario

What airlines fly to Ontario?

TAP AIR PORTUGAL, British Airways and Iberia are the top three most popular airlines that fly to Ontario from Portugal according to our data. TAP AIR PORTUGAL is the first choice among our users, with 57% of people opting to fly with this airline when traveling to Ontario. Keep in mind that there are 7 different airlines that fly to Ontario on a routine basis, so you have a few additional options to choose from.

Cheap Portugal to Ontario flight deals and tips

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

Fastest flight time

18h 51m

Direct flights

None
The fastest flight from Portugal to Ontario takes 18h 51m
There are no direct flights from Portugal to Ontario. There are no popular flight routes from Portugal to Ontario.
Search flight deals

Frequently asked questions about flying from Portugal to Ontario

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

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

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

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Portugal to Ontario Airport.

  • What documentation or ID do you need to fly to Ontario Airport?

    The travel and health documents you'll need for your trip to Ontario Airport 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 Ontario Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

Why use momondo?

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

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

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

momondo does allow users to show only those flights to Ontario from Portugal which offer a flexible booking policy as well as other useful filters and features.

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

Once all potential Portugal to Ontario flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

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

Of course. momondo tracks the price of Portugal to Ontario flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

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