How long is the flight from Irvine to Porto?

Airlines like KLM, United Airlines, and Delta fly from Irvine to Porto in about 16h 58m. The time it takes to get you to your destination can typically vary by up to 8h 37m. There are 5588 mi between Irvine and Porto. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

What are the cheapest airlines to fly from Irvine to Porto one-way?

One-way options have recently been found by users for as low as $300 on LEVEL. Other airlines that offer cheap prices include TAP AIR PORTUGAL from $345 and Iberia from $364 one-way.

In terms of precipitation, rainfall in Porto ranges from 0.7 - 7.7 inches per month. December is typically the wettest month, when rainfall can reach 7.7 in. July is typically the driest time to visit Porto when rainfall is around 0.7 in.

If weather is an important factor for your trip to Porto, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 68.0 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 48.2 F).

What are the most popular airlines that fly from Irvine to Porto?

Before booking your flight from Irvine to Porto check out the most popular airlines for this route: United Airlines, TAP AIR PORTUGAL or Delta.

What airport do you fly into for flights to Porto from Irvine?

Porto (OPO) is the airport you will fly into if you book a flight from Irvine to Porto. You should not have trouble finding flights to Porto from Irvine; the airport handles an average of 0 inbound flights from Irvine per day. You should also have plenty of airline options to choose from since 12 airlines have flights to the Porto airport from Irvine. It is only a 6.8 mi journey from Porto (OPO) to Porto’s city center.

Can I find deals for flights from Irvine to Porto that include hotel bookings?

Yes. In addition to deals on Irvine to Porto flights, Cheapflights offers vacation packages that include both flights and hotel.

How can I find direct flights from Irvine to Porto?

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Irvine to Porto.

Can I find deals for business class flights from Irvine to Porto?

Yes. Cheapflights offers flight deals from Irvine to Porto by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

$261+ Flights from Irvine to Porto

Home Search by date Vacation packages Hotels Flight deals Car rental Travel tips & news

Find cheap flights from Irvine to Porto with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheapflights Tip: The best prices from Irvine to Porto are usually found in February or January, booked 85 days in advance, depart on a Wednesday or Sunday and return on a Tuesday

Cheap flight deals from Irvine to Porto

Cheapest flights from Irvine to Porto
Explore the most affordable flight options available from Irvine to Porto. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 18, 2025.

Mon 12/295:30 pmLAX - OPO

2 stops20h 55mMultiple Airlines

Thu 1/296:00 amOPO - LAX

2 stops36h 32mMultiple Airlines

Deal found 12/15

$683

Mon 12/291:45 pmLAX - OPO

1 stop20h 55mKLM

Thu 1/2911:15 amOPO - LAX

1 stop32h 30mKLM

Deal found 12/15

$684

Mon 12/293:00 pmLAX - OPO

1 stop23h 25mLufthansa

Thu 1/296:00 amOPO - LAX

2 stops23h 10mLufthansa

Deal found 12/15

$692

Sun 12/287:55 pmLAX - OPO

1 stop27h 40mMultiple Airlines

Thu 1/296:20 amOPO - LAX

2 stops23h 43mMultiple Airlines

Deal found 12/15

$970

Sun 12/287:10 pmLAX - OPO

3 stops29h 00mMultiple Airlines

Sat 1/176:20 amOPO - LAX

3 stops38h 13mMultiple Airlines

Deal found 12/16

$1,006

Best flights from Irvine to Porto
Discover carefully curated flight deals from Irvine to Porto that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated December 18, 2025.

Fri 3/69:32 amLAX - OPO

2 stops16h 58mKLM

Sun 3/154:10 pmOPO - LAX

1 stop27h 35mKLM

Deal found 12/17

$484

Wed 3/1812:55 amLAX - OPO

2 stops25h 35mUnited Airlines

Tue 3/246:00 amOPO - LAX

2 stops23h 59mUnited Airlines

Deal found 12/16

$491

Fri 1/307:55 amLAX - OPO

2 stops18h 35mDelta

Fri 2/65:00 amOPO - LAX

2 stops18h 25mDelta

Deal found 12/16

$493

Thu 4/237:10 pmLAX - OPO

1 stop29h 30mScandinavian Airlines

Sun 5/35:55 pmOPO - LAX

2 stops50h 46mScandinavian Airlines

Deal found 12/16

$675

Thu 3/51:45 pmLAX - OPO

1 stop17h 40mDelta

Sun 3/155:00 amOPO - LAX

2 stops22h 04mDelta

Deal found 12/16

$494

Thu 1/223:00 pmLAX - OPO

1 stop15h 45mUnited Airlines

Mon 1/266:00 amOPO - LAX

2 stops36h 32mUnited Airlines

Deal found 12/17

$498

Fri 3/67:00 amLAX - OPO

2 stops19h 30mDelta

Sun 3/155:00 amOPO - LAX

2 stops22h 04mDelta

Deal found 12/17

$499

Sat 1/311:25 pmLAX - OPO

2 stops38h 15mUnited Airlines

Sat 2/712:30 pmOPO - LAX

1 stop32h 35mUnited Airlines

Deal found 12/17

$609

Tue 2/1710:55 pmLAX - OPO

2 stops27h 35mDelta

Fri 3/2011:20 amOPO - LAX

2 stops41h 11mDelta

Deal found 12/17

$612

Tue 1/67:20 amLAX - OPO

2 stops19h 10mDelta

Tue 1/205:00 amOPO - LAX

2 stops21h 45mDelta

Deal found 12/16

$693

Last-minute flights from Irvine to Porto
Discover last-minute flight deals from Irvine to Porto. Data last updated December 18, 2025 and is based on user searches.

Thu 1/157:10 pmLAX - OPO

1 stop32h 00mMultiple Airlines

Wed 1/2812:30 pmOPO - LAX

2 stops40h 40mMultiple Airlines

Deal found 12/16

$459

Thu 1/157:10 pmLAX - OPO

1 stop32h 00mMultiple Airlines

Thu 1/226:00 amOPO - LAX

2 stops36h 32mMultiple Airlines

Deal found 12/17

$487

Thu 1/1511:35 amLAX - OPO

2 stops38h 55mDelta

Wed 1/285:00 amOPO - LAX

2 stops24h 18mDelta

Deal found 12/16

$490

Fri 1/167:00 pmLAX - OPO

2 stops19h 25mLufthansa

Fri 1/234:15 pmOPO - LAX

1 stop28h 50mLufthansa

Deal found 12/17

$474

Sat 1/177:10 pmLAX - OPO

1 stop15h 25mSWISS

Fri 1/2312:25 pmOPO - LAX

1 stop36h 10mSWISS

Deal found 12/17

$462

Sat 1/177:10 pmLAX - OPO

1 stop32h 00mMultiple Airlines

Sun 1/256:00 amOPO - LAX

2 stops36h 32mMultiple Airlines

Deal found 12/16

$463

Sat 1/177:45 amLAX - OPO

2 stops21h 05mMultiple Airlines

Fri 1/2312:25 pmOPO - LAX

1 stop36h 10mMultiple Airlines

Deal found 12/18

$488

Fri 1/307:55 amLAX - OPO

2 stops18h 35mDelta

Fri 2/65:00 amOPO - LAX

1 stop14h 45mDelta

Deal found 12/16

$483

Fri 1/303:00 pmLAX - OPO

1 stop23h 25mMultiple Airlines

Fri 2/612:50 pmOPO - LAX

1 stop35h 45mMultiple Airlines

Deal found 12/16

$489

One-way flights from Irvine to Porto
Search for one-way flight options from Irvine to Porto. Find affordable one-way fares based on user searches. Data last updated December 18, 2025.

Tue 1/274:45 pmLAX - OPO

2 stops31h 50mMultiple Airlines

Deal found 12/16

$261

Fri 1/307:00 amLAX - OPO

2 stops41h 35mMultiple Airlines

Deal found 12/17

$265

Tue 2/34:45 pmLAX - OPO

2 stops31h 50mMultiple Airlines

Deal found 12/17

$267

Sat 1/317:00 amLAX - OPO

2 stops41h 20mMultiple Airlines

Deal found 12/17

$271

Thu 1/2911:50 amLAX - OPO

3 stops39h 10mMultiple Airlines

Deal found 12/17

$279

Sun 2/17:00 amLAX - OPO

2 stops41h 40mMultiple Airlines

Deal found 12/17

$285

Mon 2/28:20 amLAX - OPO

2 stops39h 50mMultiple Airlines

Deal found 12/16

$286

Wed 1/2811:50 amLAX - OPO

3 stops36h 35mMultiple Airlines

Deal found 12/17

$308

Find flight deals from Irvine to Porto

Most accurate provider	eDreams 3 stars
Most trusted provider	eDreams 3 stars
Round-trip from	$458 (Kiwi.com)
One-way from	$261 (Kiwi.com)
Popular in	December
Cheapest in	February
Average price	$1,160

Provider with most accurate pricing for Los Angeles-Porto flight deals.

Search Deals

Provider most trusted by Cheapflights users for Los Angeles-Porto flights.

Search Deals

From Irvine to Porto

Search Deals

One-way flight from Irvine to Porto

Search Deals

High demand for flights, 4% potential price rise

Search Deals

Cheapest flight prices on average. 2% potential price decrease ($25 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in December 2025

Search Deals

Fly from

Fly to

Route

Depart

Return

Price

Los AngelesPorto

LAX - OPO

LAXOPO

Los Angeles

Fri 3/6

9:32 am-10:30 am

2 stops16h 58m

Porto

Sun 3/15

4:10 pm-12:45 pm

1 stop27h 35m

$484

Los AngelesPorto

LAX - OPO

LAXOPO

Los Angeles

Wed 3/18

12:55 am-9:30 am

2 stops25h 35m

Porto

Tue 3/24

6:00 am-10:59 pm

2 stops23h 59m

$491

Los AngelesPorto

LAX - OPO

LAXOPO

Los Angeles

Fri 1/30

7:55 am-10:30 am

2 stops18h 35m

Porto

Fri 2/6

5:00 am-3:25 pm

2 stops18h 25m

$493

Los AngelesPorto

LAX - OPO

LAXOPO

Los Angeles

Thu 3/5

1:45 pm-3:25 pm

1 stop17h 40m

Porto

Sun 3/15

5:00 am-8:04 pm

2 stops22h 04m

$494

Los AngelesPorto

LAX - OPO

LAXOPO

Los Angeles

Thu 1/22

3:00 pm-2:45 pm

1 stop15h 45m

Porto

Mon 1/26

6:00 am-10:32 am

2 stops36h 32m

$498

Los AngelesPorto

LAX - OPO

LAXOPO

Los Angeles

Fri 3/6

7:00 am-10:30 am

2 stops19h 30m

Porto

Sun 3/15

5:00 am-8:04 pm

2 stops22h 04m

$499

Los AngelesPorto

LAX - OPO

LAXOPO

Los Angeles

Sat 1/31

1:25 pm-11:40 am

2 stops38h 15m

Porto

Sat 2/7

12:30 pm-1:05 pm

1 stop32h 35m

$609

Los AngelesPorto

LAX - OPO

LAXOPO

Los Angeles

Tue 2/17

10:55 pm-10:30 am

2 stops27h 35m

Porto

Fri 3/20

11:20 am-9:31 pm

2 stops41h 11m

$612

Los AngelesPorto

LAX - OPO

LAXOPO

Los Angeles

Thu 4/23

7:10 pm-8:40 am

1 stop29h 30m

Porto

Sun 5/3

5:55 pm-12:41 pm

2 stops50h 46m

$675

Los AngelesPorto

LAX - OPO

LAXOPO

Los Angeles

Tue 1/6

7:20 am-10:30 am

2 stops19h 10m

Porto

Tue 1/20

5:00 am-6:45 pm

2 stops21h 45m

$693

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/17

Showing 1-10 of 18 results

Best time to book a flight from Irvine to Porto

Have a flexible travel schedule? Discover the best time to fly to Porto from Irvine with our price prediction graph.

Estimated round-trip price

Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Irvine to Porto

How far ahead should I book a flight from Irvine to Porto?

Booking 85 days in advance of your planned departure date is, on average, the best time to get cheap flights from Irvine to Porto. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

What is the cheapest month to book a flight from Irvine to Porto?

Currently, May is the cheapest month in which you can book a flight from Irvine to Porto (average of $403). Flying from Irvine to Porto in June is currently the most expensive (average of $822). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from IR9 to OPO?

One of the essential ways to save on airfare from Irvine to Porto is to remain as flexible as possible. Flights that are in the afternoon tend to be the most expensive. A flight in the evening could potentially save you up to 38% on airfare.

What is the cheapest day to fly from Irvine to Porto?

Travelers seeking maximum savings on their Irvine to Porto flight should consider departing on Sunday evenings when fares are most often at their lowest. Thursday mornings flights should be avoided if possible as fares are typically the most expensive at this time.

Reviews of airlines servicing Porto

Get a feel of what it's like to fly with Delta, SWISS, and United Airlines from Irvine to Porto by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

Delta

7.9

Good

8,008 reviews

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Delta

7.9

Good

8,008 reviews

Delta

7.9

Good

8,008 reviews

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

SWISS

7.5

Good

1,817 reviews

Delta

7.9

Good

8,008 reviews

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

United Airlines

7.4

Good

9,095 reviews

Delta

7.9

Good

8,008 reviews

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

TAP AIR PORTUGAL

7.2

Good

2,092 reviews

Delta

7.9

Good

8,008 reviews

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Iberia

7.0

Good

3,054 reviews

Delta

7.9

Good

8,008 reviews

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Related info for your journey

What airport do you fly into for flights to Porto from Irvine?
Porto (OPO) is the airport you will fly into if you book a flight from Irvine to Porto. You should not have trouble finding flights to Porto from Irvine; the airport handles an average of 0 inbound flights from Irvine per day. You should also have plenty of airline options to choose from since 12 airlines have flights to the Porto airport from Irvine. It is only a 6.8 mi journey from Porto (OPO) to Porto’s city center.
How long is the flight from Irvine to Porto?
Airlines like KLM, United Airlines, and Delta fly from Irvine to Porto in about 16h 58m. The time it takes to get you to your destination can typically vary by up to 8h 37m. There are 5588 mi between Irvine and Porto. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.
What are the cheapest airlines to fly from Irvine to Porto one-way?
One-way options have recently been found by users for as low as $300 on LEVEL. Other airlines that offer cheap prices include TAP AIR PORTUGAL from $345 and Iberia from $364 one-way.
Can I find deals for flights from Irvine to Porto that include hotel bookings?
Yes. In addition to deals on Irvine to Porto flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Irvine to Porto?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Irvine to Porto.
Can I find deals for business class flights from Irvine to Porto?
Yes. Cheapflights offers flight deals from Irvine to Porto by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.
What is the cheapest month to book a flight from Irvine to Porto?
Currently, May is the cheapest month in which you can book a flight from Irvine to Porto (average of $403). Flying from Irvine to Porto in June is currently the most expensive (average of $822). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Aveiro

Arcos de Valdevez

Coimbra

Vila Nova de Gaia

Browse thousands of different options on Cheapflights for your next trip

Alternative routes for Irvine to Porto

San Francisco to Lisbon flights

Los Angeles to Lisbon flights

Ontario to Lisbon flights

Santa Ana to Lisbon flights

San Jose to Lisbon flights

San Diego to Lisbon flights

Los Angeles to Porto flights

San Francisco to Porto flights

San Francisco to Lajes flights

Ontario to Porto flights

Las Vegas to Lisbon flights

Oakland to Lisbon flights

Santa Ana to Porto flights

San Francisco to Funchal flights

San Francisco to Ponta Delgada flights

Sacramento to Porto flights

San Francisco to Faro flights

San Diego to Porto flights

Los Angeles to Funchal flights

Sacramento to Lisbon flights

San Jose to Porto flights

Los Angeles to Faro flights

Reno to Lisbon flights

Palm Springs to Lisbon flights

Los Angeles to Ponta Delgada flights

San Diego to Faro flights

Las Vegas to Faro flights

Los Angeles to Lajes flights

Fresno to Lisbon flights

San Jose to Faro flights

Burbank to Lisbon flights

Long Beach to Lisbon flights

Oakland to Ponta Delgada flights

Santa Rosa to Lisbon flights

Burbank to Porto flights

Santa Ana to Faro flights

San Jose to Lajes flights

Los Angeles to Pico Island flights

Monterey to Lisbon flights

Ontario to Faro flights

San Diego to Ponta Delgada flights

Las Vegas to Funchal flights

San Jose to Funchal flights

San Francisco to Porto Santo flights

San Francisco to Velas flights

Sacramento to Lajes flights

Los Angeles to Horta flights

San Francisco to Pico Island flights

Other flights to Porto

Top 10 airlines flying from Irvine to Porto

Airline	Cheapest	Average	Flexibility	On-time
LEVEL	Cheapest$388	Average$688	FlexibilityNo cancel fee	On-timeN/A
KLM	Cheapest$476	Average$876	FlexibilityNo cancel fee	On-time75%
British Airways	Cheapest$533	Average$806	FlexibilityNo cancel fee	On-time70%
Iberia	Cheapest$545	Average$917	FlexibilityNo cancel fee	On-time77%
SWISS	Cheapest$567	Average$902	FlexibilityNo cancel fee	On-time79%
American Airlines	Cheapest$574	Average$1,118	FlexibilityNo cancel fee	On-time71%
TAP AIR PORTUGAL	Cheapest$583	Average$935	FlexibilityNo cancel fee	On-timeN/A
United Airlines	Cheapest$593	Average$1,041	FlexibilityNo cancel fee	On-time69%
Lufthansa	Cheapest$611	Average$933	FlexibilityNo cancel fee	On-time76%
Delta	Cheapest$627	Average$1,032	FlexibilityNo cancel fee	On-timeN/A

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.

$261+ Cheap flights from Irvine, CA to Porto (OPO)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 1/27. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Irvine to Porto with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheapflights Tip: The best prices from Irvine to Porto are usually found in February or January, booked 85 days in advance, depart on a Wednesday or Sunday and return on a Tuesday

Cheap flight deals from Irvine to Porto

Cheapest flights from Irvine to PortoExplore the most affordable flight options available from Irvine to Porto. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 18, 2025.

Explore the most affordable flight options available from Irvine to Porto. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 18, 2025.

Find flight deals from Irvine to Porto

Keep the following information in mind while searching for Irvine to Porto flight deals. Data was last updated December 18, 2025.

Most accurate provider

Most trusted provider

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Cheapflights Fare Finder

Use the filters below to find and compare flights from Irvine to Porto that are best for you.

Best time to book a flight from Irvine to Porto

Have a flexible travel schedule? Discover the best time to fly to Porto from Irvine with our price prediction graph.

Cheapflights Insights

Everything you need to know about your flight from Irvine to Porto

How far ahead should I book a flight from Irvine to Porto?

Use this chart to determine the optimal time to book a round-trip flight from Irvine to Porto. Price data was last updated on December 12, 2025.

What is the cheapest month to book a flight from Irvine to Porto?

What is the cheapest time of day to fly from IR9 to OPO?

Find hourly flight availability from Irvine to Porto. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated December 18, 2025.

What is the cheapest day to fly from Irvine to Porto?

Use this chart to determine the cheapest time to fly round-trip from Irvine to Porto. Price data was last updated on December 16, 2024.

Reviews of airlines servicing Porto

Get a feel of what it's like to fly with Delta, SWISS, and United Airlines from Irvine to Porto by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

Find useful and relevant information for your journey from Irvine to Porto. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

What airport do you fly into for flights to Porto from Irvine?

How long is the flight from Irvine to Porto?

What are the cheapest airlines to fly from Irvine to Porto one-way?

Can I find deals for flights from Irvine to Porto that include hotel bookings?

How can I find direct flights from Irvine to Porto?

Can I find deals for business class flights from Irvine to Porto?

What is the cheapest month to book a flight from Irvine to Porto?

Traveling to a place near Porto?

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Irvine to Porto

See prices for flight routes from nearby airports that may be better suited for you.

Top 10 airlines flying from Irvine to Porto

100% Free

Book with Flexibility

Travel Smart

Cheapest flights from Irvine to Porto
Explore the most affordable flight options available from Irvine to Porto. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 18, 2025.