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Cheap flights from London Heathrow Airport to Porto from C$ 147

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from London Heathrow Airport to Porto departing on 27/1. 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

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Find the cheapest flights from London Heathrow Airport to Porto

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
3:30 p.m. - 8:15 p.m.
LHR
-
OPO
4h 45m1 stop
Multiple Airlines Logo
9:45 a.m. - 2:25 p.m.
OPO
-
LHR
4h 40m1 stop
C$ 222Multiple Airlines
Thu, 5 Mar - Sat, 21 Mar
TAP AIR PORTUGAL Logo
6:00 a.m. - 3:00 p.m.
LHR
-
OPO
9h 00m1 stop
TAP AIR PORTUGAL Logo
4:55 p.m. - 10:40 p.m.
OPO
-
LHR
5h 45m1 stop
C$ 230TAP AIR PORTUGAL
Wed, 11 Mar - Sat, 21 Mar
Multiple Airlines Logo
8:50 p.m. - 8:10 a.m.
LHR
-
OPO
11h 20m1 stop
Multiple Airlines Logo
9:45 a.m. - 2:25 p.m.
OPO
-
LHR
4h 40m1 stop
C$ 231Multiple Airlines
Mon, 9 Mar - Sat, 21 Mar
TAP AIR PORTUGAL Logo
1:40 p.m. - 10:00 p.m.
LHR
-
OPO
8h 20m1 stop
TAP AIR PORTUGAL Logo
6:55 a.m. - 12:40 p.m.
OPO
-
LHR
5h 45m1 stop
C$ 244TAP AIR PORTUGAL
Thu, 5 Mar - Tue, 24 Mar
Multiple Airlines Logo
3:30 p.m. - 8:15 p.m.
LHR
-
OPO
4h 45m1 stop
Multiple Airlines Logo
8:00 a.m. - 2:25 p.m.
OPO
-
LHR
6h 25m1 stop
C$ 249Multiple Airlines
Thu, 5 Mar - Mon, 23 Mar
TAP AIR PORTUGAL Logo
6:30 p.m. - 12:30 a.m.
LHR
-
OPO
6h 00m1 stop
TAP AIR PORTUGAL Logo
5:00 a.m. - 11:25 a.m.
OPO
-
LHR
6h 25m1 stop
C$ 251TAP AIR PORTUGAL
Sat, 7 Mar - Sun, 22 Mar
Multiple Airlines Logo
3:30 p.m. - 8:15 p.m.
LHR
-
OPO
4h 45m1 stop
Multiple Airlines Logo
9:40 a.m. - 2:25 p.m.
OPO
-
LHR
4h 45m1 stop
C$ 259Multiple Airlines
Thu, 5 Mar - Fri, 20 Mar
Multiple Airlines Logo
9:55 a.m. - 9:15 p.m.
LHR
-
OPO
11h 20m1 stop
Multiple Airlines Logo
12:05 p.m. - 5:50 p.m.
OPO
-
LHR
5h 45m1 stop
C$ 260Multiple Airlines
Wed, 4 Mar - Tue, 24 Mar
Multiple Airlines Logo
3:30 p.m. - 8:15 p.m.
LHR
-
OPO
4h 45m1 stop
Multiple Airlines Logo
2:35 p.m. - 8:05 p.m.
OPO
-
LHR
5h 30m1 stop
C$ 264Multiple Airlines
Thu, 5 Mar - Wed, 25 Mar
Multiple Airlines Logo
3:30 p.m. - 8:15 p.m.
LHR
-
OPO
4h 45m1 stop
Multiple Airlines Logo
7:35 a.m. - 2:45 p.m.
OPO
-
LHR
7h 10m2 stops
C$ 267Multiple Airlines
Thu, 5 Mar - Wed, 25 Mar

TAP AIR PORTUGAL flights from London Heathrow Airport to Porto

Our best TAP AIR PORTUGAL deals on London Heathrow Airport to Porto flight tickets
TAP AIR PORTUGAL
5 Mar
LHR1:40 p.m.London Heathrow
8h 20m
1 stop
OPO10:00 p.m.Porto
24 Mar
OPO6:55 a.m.Porto
5h 45m
1 stop
LHR12:40 p.m.London Heathrow
C$ 244
Find similar
TAP AIR PORTUGAL
7 Mar
LHR6:30 p.m.London Heathrow
6h 00m
1 stop
OPO12:30 a.m.Porto
22 Mar
OPO5:00 a.m.Porto
6h 25m
1 stop
LHR11:25 a.m.London Heathrow
C$ 251
Find similar
TAP AIR PORTUGAL
9 Mar
LHR6:00 a.m.London Heathrow
7h 00m
1 stop
OPO1:00 p.m.Porto
24 Mar
OPO2:00 p.m.Porto
8h 40m
1 stop
LHR10:40 p.m.London Heathrow
C$ 268
Find similar

KLM flights from London Heathrow Airport to Porto

Our best KLM deals on London Heathrow Airport to Porto flight tickets
KLM
2 Mar
LHR8:25 p.m.London Heathrow
14h 05m
1 stop
OPO10:30 a.m.Porto
16 Mar
OPO5:00 a.m.Porto
5h 45m
1 stop
LHR10:45 a.m.London Heathrow
C$ 275
Find similar
KLM
17 Jan
LHR6:30 a.m.London Heathrow
8h 55m
1 stop
OPO3:25 p.m.Porto
19 Jan
OPO11:15 a.m.Porto
9h 35m
1 stop
LHR8:50 p.m.London Heathrow
C$ 277
Find similar
KLM
17 Jan
LHR6:30 a.m.London Heathrow
8h 55m
1 stop
OPO3:25 p.m.Porto
19 Jan
OPO6:30 a.m.Porto
9h 35m
1 stop
LHR4:05 p.m.London Heathrow
C$ 278
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from London Heathrow Airport to Porto 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 96,600 searches. Data last updated 14 December 2025.
Use the filters below to find and compare flights from London Heathrow Airport to Porto that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

LondonPorto

LHR - OPO

LHROPO

London Heathrow

Thu 5/3

3:30 p.m.-8:15 p.m.

1 stop4h 45m

Porto

Sat 21/3

9:45 a.m.-2:25 p.m.

1 stop4h 40m

C$ 222

LondonPorto

LHR - OPO

LHROPO

London Heathrow

Wed 11/3

6:00 a.m.-3:00 p.m.

1 stop9h 00m

Porto

Sat 21/3

4:55 p.m.-10:40 p.m.

1 stop5h 45m

C$ 230

LondonPorto

LHR - OPO

LHROPO

London Heathrow

Mon 9/3

8:50 p.m.-8:10 a.m.

1 stop11h 20m

Porto

Sat 21/3

9:45 a.m.-2:25 p.m.

1 stop4h 40m

C$ 231

LondonPorto

LHR - OPO

LHROPO

London Heathrow

Thu 5/3

1:40 p.m.-10:00 p.m.

1 stop8h 20m

Porto

Tue 24/3

6:55 a.m.-12:40 p.m.

1 stop5h 45m

C$ 244

LondonPorto

LHR - OPO

LHROPO

London Heathrow

Thu 5/3

3:30 p.m.-8:15 p.m.

1 stop4h 45m

Porto

Mon 23/3

8:00 a.m.-2:25 p.m.

1 stop6h 25m

C$ 249

LondonPorto

LHR - OPO

LHROPO

London Heathrow

Sat 7/3

6:30 p.m.-12:30 a.m.

1 stop6h 00m

Porto

Sun 22/3

5:00 a.m.-11:25 a.m.

1 stop6h 25m

C$ 251

LondonPorto

LHR - OPO

LHROPO

London Heathrow

Thu 5/3

3:30 p.m.-8:15 p.m.

1 stop4h 45m

Porto

Fri 20/3

9:40 a.m.-2:25 p.m.

1 stop4h 45m

C$ 259

LondonPorto

LHR - OPO

LHROPO

London Heathrow

Wed 4/3

9:55 a.m.-9:15 p.m.

1 stop11h 20m

Porto

Tue 24/3

12:05 p.m.-5:50 p.m.

1 stop5h 45m

C$ 260

LondonPorto

LHR - OPO

LHROPO

London Heathrow

Thu 5/3

3:30 p.m.-8:15 p.m.

1 stop4h 45m

Porto

Wed 25/3

2:35 p.m.-8:05 p.m.

1 stop5h 30m

C$ 264

LondonPorto

LHR - OPO

LHROPO

London Heathrow

Thu 5/3

3:30 p.m.-8:15 p.m.

1 stop4h 45m

Porto

Wed 25/3

7:35 a.m.-2:45 p.m.

2 stops7h 10m

C$ 267

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 Porto from

How to get the cheapest flight ticket from London Heathrow Airport to Porto

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 typical price of a round-trip flight between London Heathrow Airport and Porto?

What is the cheapest month to fly to Porto?

In general, January is the cheapest month to fly from London Heathrow Airport to Porto. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around C$ 274. If you’re not able to fly to Porto in January, then November is your next best option. Flight prices from London Heathrow Airport to Porto during November average around C$ 300.

What is the cheapest day to depart on your flight to Porto?

The cheapest day to depart from London Heathrow Airport to Porto is on a Saturday. Travellers who choose to depart for Porto on a Saturday will often find tickets for as low as C$ 209. If your travel schedule is flexible, try to avoid departing on a Friday because tickets tend to average around C$ 409. These prices are subject to change though, so be sure to set up a Price Alert for flights to Porto.

What is the cheapest time of day to depart on your flight to Porto?

In the morning is the cheapest time of day to fly from London Heathrow Airport to Porto when you can find flight prices for as low as C$ 281. Flying to Porto in the morning is an ideal time because this is during off-peak travel hours. Try not to purchase tickets in the evening because they tend to be around C$ 340. Of course, these prices can vary depending on the time of year and what airport you fly to.

How far in advance should I book a flight to Porto?

You are more likely to see cheaper flights to Porto from London Heathrow Airport when booking weeks ahead of your departure date. In general, you can expect to find flights to Porto for around C$ 392 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Porto from London Heathrow Airport for as low as C$ 299 on momondo.

How have London Heathrow Airport to Porto flight prices changed over time?

As of December 2025, prices for London Heathrow Airport to Porto flights are approximately 6% more expensive when compared to flights at the same time last year.

When to book flights from London Heathrow Airport to Porto

Are you open to changing your travel dates? Check out the ideal times to fly from London Heathrow Airport to Porto according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap London Heathrow Airport to Porto (LHR to OPO) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from London Heathrow Airport to Porto

Fastest flight time

5h 15m

Direct flights

None
The fastest flight from London Heathrow Airport to Porto takes 5h 15m
There are no direct flights from London Heathrow Airport to Porto. There are no popular flight routes from London Heathrow Airport to Porto.
Search flight deals

  • How far is London Heathrow to Porto by plane?

    The distance between London Heathrow and Porto is about 1304.5 km. 5h 15m is a normal flight duration for this route.

  • When did momondo last update prices for flights from London Heathrow Airport to Porto Airport?

    Prices for flights from London Heathrow Airport to Porto Airport are refreshed on a daily basis.

  • How old do you have to be to fly from London Heathrow Airport to Porto 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 London Heathrow Airport to Porto Airport.

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

    The necessary travel and health documents for your Porto Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

Travelling to a place near Porto?

Book flights to Porto if you plan to visit one of these locations
Coimbra
Pinhao
Vila Nova de Gaia
Braga
Matosinhos
Aveiro
Lamego
Esposende
Guimarães
Espinho
Mira

Why use momondo?

Why should I use momondo to find a flight deal from London to Porto?

It is quick and easy to find London to Porto flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Porto that suits you.

Can I find flights from London to Porto with flexible booking policies on momondo?

Flights from London to Porto with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

How can momondo help me find flights from London to Porto?

Once you have performed a search for London to Porto flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

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

Price alerts on flights to Porto from London are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

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