How many flights depart from Philadelphia to Lisbon on average per day?

As of September 2026, there are 4 flights per day flying from Philadelphia to Lisbon. The most common time of day flights depart is 21:00, with 100% of flights taking off in the evening.

What is the cheapest airline that flies from Philadelphia to Lisbon Humberto Delgado?

British Airways and United Airlines are the most popular carriers operating from Philadelphia to Lisbon Humberto Delgado

How many flights depart from Philadelphia to Lisbon on average per week?

The number of flights available between Philadelphia and Lisbon is 28 per week as of September 2026. The most frequent departure day is Mon, with 14% of weekly flights leaving on this day.

When did momondo last update prices for flights from Philadelphia Airport to Lisbon Humberto Delgado Airport?

Prices for flights from Philadelphia Airport to Lisbon Humberto Delgado Airport are updated daily.

How old do you have to be to fly from Philadelphia Airport to Lisbon Humberto Delgado 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 stopovers. It is recommended that you verify with the airline you are booking with for travel from Philadelphia Airport to Lisbon Humberto Delgado Airport.

What documentation or ID do you need to fly to Lisbon Humberto Delgado Airport?

The travel and health documents required for your trip to Lisbon Humberto Delgado Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s licence, and a passport valid for six-months after you plan to arrive at Lisbon Humberto Delgado Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

R5 752 Cheap Flights from Philadelphia to Lisbon in 2026/27

Find the cheapest flights from Philadelphia to Lisbon

Return

One-way

Last minute

Direct

Cheap return flights

Enter your travel dates to find the best prices.

21:15 - 9:05PHL Philadelphia-LIS Lisbon Humberto Delgado

6h 50mdirect

6:30 - 15:35LIS Lisbon Humberto Delgado-PHL Philadelphia

14h 05m1 stop Madrid Barajas

R9 992Finnair

Mon, Nov 9 - Tue, Nov 17

22:00 - 9:05PHL Philadelphia-LIS Lisbon Humberto Delgado

7h 05mdirect

6:30 - 15:35LIS Lisbon Humberto Delgado-PHL Philadelphia

14h 05m1 stop Madrid Barajas

R10 009Finnair

Mon, Oct 26 - Wed, Nov 4

15:20 - 6:55PHL Philadelphia-LIS Lisbon Humberto Delgado

10h 35m1 stop Montreal Pierre Elliott Trudeau Intl

8:55 - 12:05LIS Lisbon Humberto Delgado-PHL Philadelphia

32h 10m2 stops Montreal Pierre Elliott Trudeau Intl Chicago O'Hare Intl

R10 025United Airlines

Wed, Nov 18 - Thu, Nov 26

22:00 - 9:05PHL Philadelphia-LIS Lisbon Humberto Delgado

7h 05mdirect

6:30 - 15:35LIS Lisbon Humberto Delgado-PHL Philadelphia

14h 05m1 stop Madrid Barajas

R10 041Finnair

Wed, Oct 28 - Wed, Nov 4

19:35 - 21:55PHL Philadelphia-LIS Lisbon Humberto Delgado

22h 20m1 stop London Heathrow

11:05 - 14:00LIS Lisbon Humberto Delgado-PHL Philadelphia

7h 55mdirect

R10 057British Airways

Mon, Oct 26 - Wed, Nov 4

18:35 - 14:55PHL Philadelphia-LIS Lisbon Humberto Delgado

15h 20m1 stop London Heathrow

6:35 - 17:35LIS Lisbon Humberto Delgado-PHL Philadelphia

16h 00m1 stop Madrid Barajas

R10 074Multiple Airlines

Sun, Jan 31 - Wed, Mar 31

19:35 - 21:55PHL Philadelphia-LIS Lisbon Humberto Delgado

22h 20m1 stop London Heathrow

11:05 - 14:00LIS Lisbon Humberto Delgado-PHL Philadelphia

7h 55mdirect

R10 090British Airways

Mon, Oct 26 - Wed, Nov 4

15:20 - 6:55PHL Philadelphia-LIS Lisbon Humberto Delgado

10h 35m1 stop Montreal Pierre Elliott Trudeau Intl

10:55 - 17:57LIS Lisbon Humberto Delgado-PHL Philadelphia

36h 02m2 stops Toronto Pearson Intl Chicago O'Hare Intl

R10 106United Airlines

Wed, Nov 25 - Thu, Dec 3

21:25 - 9:05PHL Philadelphia-LIS Lisbon Humberto Delgado

6h 40mdirect

6:35 - 17:35LIS Lisbon Humberto Delgado-PHL Philadelphia

16h 00m1 stop Madrid Barajas

R10 122Finnair

Sun, Jan 31 - Wed, Mar 31

22:00 - 9:05PHL Philadelphia-LIS Lisbon Humberto Delgado

7h 05mdirect

11:05 - 14:00LIS Lisbon Humberto Delgado-PHL Philadelphia

7h 55mdirect

R10 139British Airways

Wed, Oct 28 - Wed, Nov 4

Cheap last-minute flights

Enter your travel dates to find the best prices.

19:40 - 10:30PHL Philadelphia-LIS Lisbon Humberto Delgado

9h 50m1 stop Washington, D.C. Dulles Intl

6:45 - 16:05LIS Lisbon Humberto Delgado-PHL Philadelphia

14h 20m1 stop Frankfurt am Main

R13 469United Airlines

Wed, Sep 23 - Tue, Sep 29

9:30 - 8:20PHL Philadelphia-LIS Lisbon Humberto Delgado

17h 50m2 stops Chicago O'Hare Intl Newark

6:45 - 16:05LIS Lisbon Humberto Delgado-PHL Philadelphia

14h 20m1 stop Frankfurt am Main

R13 534United Airlines

Wed, Sep 23 - Tue, Sep 29

9:30 - 8:20PHL Philadelphia-LIS Lisbon Humberto Delgado

17h 50m2 stops Chicago O'Hare Intl Newark

6:45 - 16:05LIS Lisbon Humberto Delgado-PHL Philadelphia

14h 20m1 stop Frankfurt am Main

R13 551United Airlines

Wed, Sep 23 - Tue, Sep 29

19:30 - 10:35PHL Philadelphia-LIS Lisbon Humberto Delgado

10h 05m1 stop Washington, D.C. Dulles Intl

6:45 - 16:05LIS Lisbon Humberto Delgado-PHL Philadelphia

14h 20m1 stop Frankfurt am Main

R14 444United Airlines

Sat, Sep 26 - Tue, Oct 6

6:15 - 9:20PHL Philadelphia-LIS Lisbon Humberto Delgado

22h 05m2 stops Washington, D.C. Dulles Intl Montreal Pierre Elliott Trudeau Intl

5:05 - 16:05LIS Lisbon Humberto Delgado-PHL Philadelphia

16h 00m1 stop Frankfurt am Main

R14 493United Airlines

Fri, Sep 25 - Tue, Oct 6

13:24 - 10:35PHL Philadelphia-LIS Lisbon Humberto Delgado

16h 11m2 stops Chicago O'Hare Intl Washington, D.C. Dulles Intl

7:25 - 16:05LIS Lisbon Humberto Delgado-PHL Philadelphia

13h 40m1 stop Frankfurt am Main

R14 509United Airlines

Sat, Sep 26 - Fri, Oct 9

15:08 - 10:30PHL Philadelphia-LIS Lisbon Humberto Delgado

14h 22m1 stop Washington, D.C. Dulles Intl

10:25 - 10:11LIS Lisbon Humberto Delgado-PHL Philadelphia

28h 46m2 stops Newark Chicago O'Hare Intl

R14 867United Airlines

Fri, Sep 25 - Fri, Oct 2

10:30 - 8:20PHL Philadelphia-LIS Lisbon Humberto Delgado

16h 50m2 stops Washington, D.C. Dulles Intl Newark

13:00 - 23:30LIS Lisbon Humberto Delgado-PHL Philadelphia

15h 30m2 stops Toronto Pearson Intl Washington, D.C. Dulles Intl

R15 224United Airlines

Wed, Sep 23 - Tue, Sep 29

12:29 - 14:55PHL Philadelphia-LIS Lisbon Humberto Delgado

21h 26m2 stops Detroit Metropolitan Wayne County Paris Charles de Gaulle

5:35 - 23:08LIS Lisbon Humberto Delgado-PHL Philadelphia

22h 33m2 stops Paris Charles de Gaulle Detroit Metropolitan Wayne County

R15 289Delta

Sat, Sep 26 - Tue, Oct 6

10:40 - 10:35PHL Philadelphia-LIS Lisbon Humberto Delgado

18h 55m1 stop Washington, D.C. Dulles Intl

7:25 - 16:05LIS Lisbon Humberto Delgado-PHL Philadelphia

13h 40m1 stop Frankfurt am Main

R15 419United Airlines

Sat, Sep 26 - Mon, Oct 5

Cheap direct flights

Enter your travel dates to find the best prices.

22:00 - 9:05PHL Philadelphia-LIS Lisbon Humberto Delgado

7h 05mdirect

11:05 - 14:00LIS Lisbon Humberto Delgado-PHL Philadelphia

7h 55mdirect

R10 106Finnair

Mon, Oct 26 - Wed, Nov 4

22:00 - 9:05PHL Philadelphia-LIS Lisbon Humberto Delgado

7h 05mdirect

11:05 - 14:00LIS Lisbon Humberto Delgado-PHL Philadelphia

7h 55mdirect

R10 122Finnair

Mon, Oct 26 - Wed, Nov 4

22:00 - 9:05PHL Philadelphia-LIS Lisbon Humberto Delgado

7h 05mdirect

11:05 - 14:00LIS Lisbon Humberto Delgado-PHL Philadelphia

7h 55mdirect

R10 139British Airways

Wed, Oct 28 - Wed, Nov 4

21:25 - 9:05PHL Philadelphia-LIS Lisbon Humberto Delgado

6h 40mdirect

11:05 - 13:55LIS Lisbon Humberto Delgado-PHL Philadelphia

7h 50mdirect

R10 220Finnair

Sun, Jan 31 - Wed, Mar 31

21:15 - 9:05PHL Philadelphia-LIS Lisbon Humberto Delgado

6h 50mdirect

11:05 - 14:00LIS Lisbon Humberto Delgado-PHL Philadelphia

7h 55mdirect

R10 951British Airways

Mon, Nov 16 - Mon, Nov 23

21:25 - 9:05PHL Philadelphia-LIS Lisbon Humberto Delgado

6h 40mdirect

11:05 - 14:05LIS Lisbon Humberto Delgado-PHL Philadelphia

8h 00mdirect

R11 032British Airways

Sun, Feb 21 - Sun, Feb 28

21:25 - 9:05PHL Philadelphia-LIS Lisbon Humberto Delgado

6h 40mdirect

11:05 - 14:05LIS Lisbon Humberto Delgado-PHL Philadelphia

8h 00mdirect

R12 673Finnair

Mon, Dec 14 - Mon, Dec 21

21:25 - 9:05PHL Philadelphia-LIS Lisbon Humberto Delgado

6h 40mdirect

11:05 - 14:05LIS Lisbon Humberto Delgado-PHL Philadelphia

8h 00mdirect

R13 486British Airways

Mon, Feb 22 - Sat, Feb 27

22:00 - 9:05PHL Philadelphia-LIS Lisbon Humberto Delgado

7h 05mdirect

11:05 - 14:00LIS Lisbon Humberto Delgado-PHL Philadelphia

7h 55mdirect

R14 850British Airways

Thu, Oct 29 - Wed, Nov 18

21:15 - 9:05PHL Philadelphia-LIS Lisbon Humberto Delgado

6h 50mdirect

11:05 - 14:00LIS Lisbon Humberto Delgado-PHL Philadelphia

7h 55mdirect

R15 110British Airways

Sun, Nov 1 - Fri, Nov 20

Save money when you book flights with momondo

Big names, great deals

Search 100s of travel sites to compare prices.

Filter for what you want

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

Trusted and free

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

Price Alerts

Not ready to book? to track prices.

Search flight deals

Finnair flights from Philadelphia to Lisbon

Our best Finnair deals on Philadelphia to Lisbon flight tickets

Finnair

Nov 9

PHL21:15Philadelphia

6h 50m

LIS9:05Lisbon Humberto Delgado

Nov 17

LIS6:30Lisbon Humberto Delgado

14h 05m

1 stop

PHL15:35Philadelphia

R9 992

Finnair

Oct 26

PHL22:00Philadelphia

7h 05m

LIS9:05Lisbon Humberto Delgado

Nov 4

LIS6:30Lisbon Humberto Delgado

14h 05m

1 stop

PHL15:35Philadelphia

R10 009

Finnair

Oct 28

PHL22:00Philadelphia

7h 05m

LIS9:05Lisbon Humberto Delgado

Nov 4

LIS6:30Lisbon Humberto Delgado

14h 05m

1 stop

PHL15:35Philadelphia

R10 041

United Airlines flights from Philadelphia to Lisbon

Our best United Airlines deals on Philadelphia to Lisbon flight tickets

United Airlines

Nov 18

PHL15:20Philadelphia

10h 35m

1 stop

LIS6:55Lisbon Humberto Delgado

Nov 26

LIS8:55Lisbon Humberto Delgado

32h 10m

2 stops

PHL12:05Philadelphia

R10 025

United Airlines

Nov 25

PHL15:20Philadelphia

10h 35m

1 stop

LIS6:55Lisbon Humberto Delgado

Dec 3

LIS10:55Lisbon Humberto Delgado

36h 02m

2 stops

PHL17:57Philadelphia

R10 106

United Airlines

Oct 26

PHL10:30Philadelphia

17h 40m

2 stops

LIS8:10Lisbon Humberto Delgado

Nov 4

LIS10:15Lisbon Humberto Delgado

18h 16m

2 stops

PHL23:31Philadelphia

R10 187

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

PhiladelphiaLisbon

PHL Philadelphia - LIS Lisbon Humberto Delgado

PHLLIS

Philadelphia

Mon 9/11

21:15-9:05

Nonstop6h 50m

Lisbon Humberto Delgado

Tue 17/11

6:30-15:35

1 stop14h 05m

R9 992

PhiladelphiaLisbon

PHL Philadelphia - LIS Lisbon Humberto Delgado

PHLLIS

Philadelphia

Mon 26/10

22:00-9:05

Nonstop7h 05m

Lisbon Humberto Delgado

Wed 4/11

6:30-15:35

1 stop14h 05m

R10 009

PhiladelphiaLisbon

PHL Philadelphia - LIS Lisbon Humberto Delgado

PHLLIS

Philadelphia

Wed 18/11

15:20-6:55

1 stop10h 35m

Lisbon Humberto Delgado

Thu 26/11

8:55-12:05

2 stops32h 10m

R10 025

PhiladelphiaLisbon

PHL Philadelphia - LIS Lisbon Humberto Delgado

PHLLIS

Philadelphia

Wed 28/10

22:00-9:05

Nonstop7h 05m

Lisbon Humberto Delgado

Wed 4/11

6:30-15:35

1 stop14h 05m

R10 041

PhiladelphiaLisbon

PHL Philadelphia - LIS Lisbon Humberto Delgado

PHLLIS

Philadelphia

Mon 26/10

19:35-21:55

1 stop22h 20m

Lisbon Humberto Delgado

Wed 4/11

11:05-14:00

Nonstop7h 55m

R10 057

PhiladelphiaLisbon

PHL Philadelphia - LIS Lisbon Humberto Delgado

PHLLIS

Philadelphia

Sun 31/1

18:35-14:55

1 stop15h 20m

Lisbon Humberto Delgado

Wed 31/3

6:35-17:35

1 stop16h 00m

R10 074

PhiladelphiaLisbon

PHL Philadelphia - LIS Lisbon Humberto Delgado

PHLLIS

Philadelphia

Mon 26/10

19:35-21:55

1 stop22h 20m

Lisbon Humberto Delgado

Wed 4/11

11:05-14:00

Nonstop7h 55m

R10 090

PhiladelphiaLisbon

PHL Philadelphia - LIS Lisbon Humberto Delgado

PHLLIS

Philadelphia

Wed 25/11

15:20-6:55

1 stop10h 35m

Lisbon Humberto Delgado

Thu 3/12

10:55-17:57

2 stops36h 02m

R10 106

PhiladelphiaLisbon

PHL Philadelphia - LIS Lisbon Humberto Delgado

PHLLIS

Philadelphia

Sun 31/1

21:25-9:05

Nonstop6h 40m

Lisbon Humberto Delgado

Wed 31/3

6:35-17:35

1 stop16h 00m

R10 122

Fastest return journey

PhiladelphiaLisbon

PHL Philadelphia - LIS Lisbon Humberto Delgado

PHLLIS

Philadelphia

Wed 28/10

22:00-9:05

Nonstop7h 05m

Lisbon Humberto Delgado

Wed 4/11

11:05-14:00

Nonstop7h 55m

R10 139

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from Philadelphia to Lisbon

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

Prices

Airlines

Other information

What is the typical price of a round-trip flight between Philadelphia and Lisbon?

Prices are currently low for flights on this route.

Typical prices usually range from R17 596 to R23 080.
The lowest price recently found on this route was R9 992.

What is the cheapest month to fly to Lisbon?

In general, March is the cheapest month to fly from Philadelphia to Lisbon. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around R12 332. If you’re not able to fly to Lisbon in March, then January is your next best option. Flight prices from Philadelphia to Lisbon during January average around R12 787.

How far in advance should I book a flight from Philadelphia to Lisbon?

You are more likely to see cheaper flights to Lisbon from Philadelphia when booking weeks ahead of your departure date. In general, you can expect to find flights to Lisbon for around R17 974 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Lisbon from Philadelphia for as low as R16 524 on momondo.

How have Philadelphia to Lisbon flight prices changed over time?

As of September 2026, prices for Philadelphia to Lisbon flights are approximately 19% cheaper when compared to flights at the same time last year.

When to book flights from Philadelphia to Lisbon

Are you open to changing your travel dates? Check out the ideal times to fly from Philadelphia to Lisbon according to our flight data. Find out which month and days have the cheapest flights.

Estimated return price

Cheap Philadelphia to Lisbon (PHL to LIS) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Philadelphia to Lisbon

Best price found	R5 752
Direct flights	Every day
Airports in Lisbon	1 airport

The best one-way flight to Lisbon from Philadelphia in the past 72 hours is R5 752. The best return flight deal from Philadelphia to Lisbon found on momondo in the last 72 hours is R9 992.

Direct flights go from Philadelphia to Lisbon every day.

There is 1 airport in Lisbon. From Philadelphia there are direct flights to Lisbon Humberto Delgado (LIS).

Search flight deals

Frequently asked questions about flying from Philadelphia to Lisbon

How far is Philadelphia to Lisbon Humberto Delgado by plane?
There are 5539,4 km between Philadelphia and Lisbon Humberto Delgado.
When did momondo last update prices for flights from Philadelphia Airport to Lisbon Humberto Delgado Airport?
Prices for flights from Philadelphia Airport to Lisbon Humberto Delgado Airport are updated daily.
How old do you have to be to fly from Philadelphia Airport to Lisbon Humberto Delgado 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 stopovers. It is recommended that you verify with the airline you are booking with for travel from Philadelphia Airport to Lisbon Humberto Delgado Airport.
What documentation or ID do you need to fly to Lisbon Humberto Delgado Airport?
The travel and health documents required for your trip to Lisbon Humberto Delgado Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s licence, and a passport valid for six-months after you plan to arrive at Lisbon Humberto Delgado Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.
What is the most popular plane model from Philadelphia to Lisbon?
Based on momondo bookings for flights between Philadelphia and Lisbon, the leading plane model is Boeing 787-9 Dreamliner, making up 72,90% of the total bookings. Other popular models include Boeing 787-8 Dreamliner with 9,61%, Boeing 787 Dreamliner with 8,95%, and Airbus A321neo with 5,21%.

Peniche

Fátima

Estoril

Nazaré

Almada

Sintra

Leiria

Setúbal

Why use momondo?

Why should I use momondo to find a flight deal from Philadelphia to Lisbon?

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

Can I find flights from Philadelphia to Lisbon with flexible booking policies on momondo?

Yes. All flights to Lisbon from Philadelphia on momondo can be compared and filtered by various policies on offer, including flexible booking.

How can momondo help me find flights from Philadelphia to Lisbon?

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Lisbon from Philadelphia.

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

Yes momondo offers price alerts on flights to Lisbon from Philadelphia. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

An easier way to manage your Lisbon trip

We make it super easy to schedule, organise 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

Tue 20/10

Tue 27/10

Email me momondo's favourite deals

By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to Portugal

Nearby airports

Other Portugal destinations

Complete your trip

Feeling lucky

Airports servicing Portugal

Cheap flights from Philadelphia to Lisbon from R5 752

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Philadelphia to Lisbon departing on 15/3. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

Find the cheapest flights from Philadelphia to Lisbon

Cheap return flights

Cheap one-way flights

Cheap last-minute flights

Cheap direct flights

Big names, great deals

Big names, great deals

Filter for what you want

Filter for what you want

Trusted and free

Trusted and free

Price Alerts

Price Alerts

Finnair flights from Philadelphia to Lisbon

Our best Finnair deals on Philadelphia to Lisbon flight tickets

United Airlines flights from Philadelphia to Lisbon

Our best United Airlines deals on Philadelphia to Lisbon flight tickets

momondo Fare Finder

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

See travel insights to Lisbon from

How to get the cheapest flight ticket from Philadelphia to Lisbon

What is the typical price of a round-trip flight between Philadelphia and Lisbon?

What is the cheapest month to fly to Lisbon?

How far in advance should I book a flight from Philadelphia to Lisbon?

How have Philadelphia to Lisbon flight prices changed over time?

What is the cheapest airline that flies from Philadelphia to Lisbon Humberto Delgado?

How many flights depart from Philadelphia to Lisbon on average per day?

How many flights depart from Philadelphia to Lisbon on average per week?

When to book flights from Philadelphia to Lisbon

Cheap Philadelphia to Lisbon (PHL to LIS) flight deals and tips

Best price found

Direct flights

Airports in Lisbon

Frequently asked questions about flying from Philadelphia to Lisbon

Travelling to a place near Lisbon?

Why use momondo?

An easier way to manage your Lisbon trip

We make it super easy to schedule, organise and travel with friends or family. Trips is free – and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to Portugal

Airports servicing Portugal

Popular Cities in Portugal

Popular flights according to clicks in the last 7 days on momondo

Complete your trip to Lisbon

Explore popular destinations other users love

According to popular flight searches on momondo this year