How often are flights from London to Portland delayed?

Historically, on average around 20% of flights between London and Portland have experienced a delay on any given week. The average delay length over the past 12 months has been 119 minutes.

Which stopover airport has the shortest connection time from London Heathrow Airport to Portland?

Denver (DEN) has the shortest average stopover time for this route: 1h 28m.

What is the most punctual flight time for London to Portland flights?

Generally, flights departing in the early afternoon tend to experience fewer delays. Flights departing in the early afternoon have, in the past, seen delays more frequently in comparison.

Which stopover airport has the shortest travel time from London Heathrow Airport to Portland?

Flights connecting via Seattle (SEA) have the shortest average one-way travel time: 13h 14m.

What day of the week experiences the fewest flight delays on this route?

Friday is statistically the day of the week that experiences the fewest delays on this flight route. Sunday has historically seen more delays on average compared to the rest of the week.

What is the cheapest airline that flies from London Heathrow to Portland?

Icelandair is the most popular carrier operating from London Heathrow to Portland

Which airline has the best punctuality record on London to Portland flights?

According to our data, British Airways have had the fewest delays on this route over the last 12 months, with about 20% of their flights experiencing any sort of delay.

Which stopover airport offers the lowest fares from London Heathrow Airport to Portland?

Flights via Reykjavik (KEF) offer the lowest average return price of £540.

Which airport is the most popular for stopovers for flights between London Heathrow Airport and Portland?

Denver (DEN) was the most common stop: 27% of momondo users choosing one-stop flights on this route connected there.

Which airlines fly to Portland?

British Airways, Virgin Atlantic and Finnair are the top three most popular airlines that fly to Portland from London Heathrow Airport according to our data. British Airways is the first choice among our users, with 66% of people opting to fly with this airline when travelling to Portland. Keep in mind that there are 11 different airlines that fly to Portland on a routine basis, so you have a few additional options to choose from.

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

Prices for flights from London Heathrow Airport to Portland Airport were last updated today.

How many operators does momondo search for flights from London Heathrow Airport to Portland Airport?

The number of operators available for flights from London Heathrow Airport to Portland Airport is 11 as of January 2026.

How old do you have to be to fly from London Heathrow Airport to Portland Airport?

The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from London Heathrow Airport to Portland Airport.

What documentation or ID do you need to fly to Portland Airport?

The travel and health documents required for your trip to Portland 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 license, and a passport valid for six-months after you plan to arrive at Portland Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

£341 Cheap Flights from London Heathrow Airport to Portland in 2026

Q: What is the typical price of a round-trip flight between London Heathrow Airport and Portland?

Prices are currently low for flights on this route. Typical prices usually range from £504 to £659. The lowest price recently found on this route was £479.

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Find the cheapest flights from London Heathrow Airport to Portland

Round-trip

One-way

Last minute

Direct

Cheap return flights

Enter your travel dates to find the best prices.

12:15 - 18:00

LHR

PDX

12h 45m

1 stop

15:45 - 19:30

PDX

LHR

20h 45m

1 stop

£479Icelandair

Sun, 8 Mar - Mon, 16 Mar

12:15 - 17:00

LHR

PDX

12h 45m

1 stop

15:45 - 10:50

PDX

LHR

12h 05m

1 stop

£481Icelandair

Fri, 6 Mar - Tue, 10 Mar

12:15 - 18:00

LHR

PDX

12h 45m

1 stop

15:45 - 10:50

PDX

LHR

12h 05m

1 stop

£491Icelandair

Mon, 9 Mar - Mon, 16 Mar

06:30 - 20:53

LHR

PDX

22h 23m

2 stops

17:39 - 16:50

PDX

LHR

16h 11m

1 stop

£540Multiple Airlines

Fri, 6 Mar - Mon, 9 Mar

13:05 - 18:00

LHR

PDX

12h 55m

1 stop

15:30 - 11:55

PDX

LHR

12h 25m

1 stop

£544Icelandair

Mon, 4 May - Mon, 18 May

13:05 - 18:00

LHR

PDX

12h 55m

1 stop

15:30 - 11:55

PDX

LHR

12h 25m

1 stop

£548Icelandair

Mon, 4 May - Mon, 18 May

12:15 - 18:00

LHR

PDX

12h 45m

1 stop

15:30 - 20:20

PDX

LHR

20h 50m

1 stop

£572Icelandair

Mon, 16 Mar - Mon, 30 Mar

06:30 - 15:48

LHR

PDX

16h 18m

2 stops

13:36 - 15:45

PDX

LHR

19h 09m

1 stop

£573Multiple Airlines

Mon, 9 Mar - Mon, 16 Mar

06:30 - 20:33

LHR

PDX

22h 03m

2 stops

07:05 - 06:55

PDX

LHR

15h 50m

1 stop

£574Multiple Airlines

Sat, 28 Feb - Sat, 7 Mar

09:00 - 23:42

LHR

PDX

22h 42m

2 stops

07:16 - 10:55

PDX

LHR

19h 39m

1 stop

£576Multiple Airlines

Thu, 26 Feb - Thu, 5 Mar

British Airways flights from London Heathrow Airport to Portland

Our best British Airways deals on London Heathrow Airport to Portland flight tickets

British Airways

9 Mar

LHR13:45London Heathrow

10h 10m

PDX16:55Portland

16 Mar

PDX12:04Portland

14h 56m

1 stop

LHR10:00London Heathrow

£598

British Airways

16 Mar

LHR13:45London Heathrow

10h 10m

PDX16:55Portland

30 Mar

PDX19:30Portland

9h 30m

LHR13:00London Heathrow

£610

British Airways

2 Mar

LHR13:45London Heathrow

10h 10m

PDX15:55Portland

16 Mar

PDX18:45Portland

9h 35m

LHR11:20London Heathrow

£613

Icelandair flights from London Heathrow Airport to Portland

Our best Icelandair deals on London Heathrow Airport to Portland flight tickets

Icelandair

8 Mar

LHR12:15London Heathrow

12h 45m

1 stop

PDX18:00Portland

16 Mar

PDX15:45Portland

20h 45m

1 stop

LHR19:30London Heathrow

£479

Icelandair

6 Mar

LHR12:15London Heathrow

12h 45m

1 stop

PDX17:00Portland

10 Mar

PDX15:45Portland

12h 05m

1 stop

LHR10:50London Heathrow

£481

Icelandair

9 Mar

LHR12:15London Heathrow

12h 45m

1 stop

PDX18:00Portland

16 Mar

PDX15:45Portland

12h 05m

1 stop

LHR10:50London Heathrow

£491

momondo Fare Finder

Use the filters below to find and compare flights from London Heathrow Airport to Portland that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

LondonPortland

LHR - PDX

LHRPDX

London Heathrow

Sun 8/3

12:15-18:00

1 stop12h 45m

Portland

Mon 16/3

15:45-19:30

1 stop20h 45m

£479

LondonPortland

LHR - PDX

LHRPDX

London Heathrow

Fri 6/3

12:15-17:00

1 stop12h 45m

Portland

Tue 10/3

15:45-10:50

1 stop12h 05m

£481

LondonPortland

LHR - PDX

LHRPDX

London Heathrow

Mon 9/3

12:15-18:00

1 stop12h 45m

Portland

Mon 16/3

15:45-10:50

1 stop12h 05m

£491

LondonPortland

LHR - PDX

LHRPDX

London Heathrow

Fri 6/3

06:30-20:53

2 stops22h 23m

Portland

Mon 9/3

17:39-16:50

1 stop16h 11m

£540

LondonPortland

LHR - PDX

LHRPDX

London Heathrow

Mon 4/5

13:05-18:00

1 stop12h 55m

Portland

Mon 18/5

15:30-11:55

1 stop12h 25m

£544

LondonPortland

LHR - PDX

LHRPDX

London Heathrow

Mon 4/5

13:05-18:00

1 stop12h 55m

Portland

Mon 18/5

15:30-11:55

1 stop12h 25m

£548

LondonPortland

LHR - PDX

LHRPDX

London Heathrow

Mon 16/3

12:15-18:00

1 stop12h 45m

Portland

Mon 30/3

15:30-20:20

1 stop20h 50m

£572

LondonPortland

LHR - PDX

LHRPDX

London Heathrow

Mon 9/3

06:30-15:48

2 stops16h 18m

Portland

Mon 16/3

13:36-15:45

1 stop19h 09m

£573

LondonPortland

LHR - PDX

LHRPDX

London Heathrow

Sat 28/2

06:30-20:33

2 stops22h 03m

Portland

Sat 7/3

07:05-06:55

1 stop15h 50m

£574

LondonPortland

LHR - PDX

LHRPDX

London Heathrow

Thu 26/2

09:00-23:42

2 stops22h 42m

Portland

Thu 5/3

07:16-10:55

1 stop19h 39m

£576

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 London Heathrow Airport to Portland

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

Delays

Stopovers

What is the typical price of a round-trip flight between London Heathrow Airport and Portland?

What is the cheapest month to fly to Portland?

The cheapest month to fly to Portland from London Heathrow Airport is in November. Flight prices, which tend to average around £531, are often lower during this time because this is during the off-season. If you don’t want to visit Portland in November, then you should wait until September to fly from London Heathrow Airport, when ticket prices are also cheap, with an average price of £549.

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

The cheapest day to depart on your flight to Portland is on a Wednesday when prices can be found for as low as £655. This is often the case because there is less demand to fly during this day of the week. The most expensive day to fly to Portland is Saturday, with ticket prices averaging around £739.

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

Flying to Portland from London Heathrow Airport at midday is the least expensive time of day to depart. momondo users have found prices as low as £645 when looking at flights departing at midday. Try not to purchase tickets in the afternoon because they tend to be around £717. Of course, these prices can vary depending on the time of year and what airport you fly to.

What is the cheapest London Heathrow to Portland flight route?

Fly from London Heathrow to Portland for the best London Heathrow - Portland flight prices

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

You are more likely to see cheaper flights to Portland from London Heathrow Airport when booking weeks ahead of your departure date. In general, you can expect to find flights to Portland for around £643 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Portland from London Heathrow Airport for as low as £575 on momondo.

What cabin class options are available on London Heathrow to Portland flights?

There are 3 cabin classes available to choose from on London Heathrow to Portland flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

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

As of January 2026, prices for London Heathrow Airport to Portland flights are approximately 11% more expensive when compared to flights at the same time last year.

When to book flights from London Heathrow Airport to Portland

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

Estimated return price

Cheap London Heathrow Airport to Portland (LHR to PDX) flight deals and tips

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

Best price found	£859
Fastest flight time	10h 00m
Direct flights	Every day
Airports in Portland	1 airport

The best one-way flight to Portland from London Heathrow Airport in the past 72 hours is £859. The best return flight deal from London Heathrow Airport to Portland found on momondo in the last 72 hours is £642.

The fastest flight from London Heathrow Airport to Portland takes 10h 00m

Direct flights go from London Heathrow Airport to Portland every day.

There is 1 airport in Portland. From London Heathrow Airport there are direct flights to Portland (PDX).

Search flight deals

How far is London Heathrow to Portland by plane?
The straight-line distance from London Heathrow to Portland is 4902.4 mi. Typically, this will take 10h 00m by plane in normal conditions.
When did momondo last update prices for flights from London Heathrow Airport to Portland Airport?
Prices for flights from London Heathrow Airport to Portland Airport were last updated today.
How many operators does momondo search for flights from London Heathrow Airport to Portland Airport?
The number of operators available for flights from London Heathrow Airport to Portland Airport is 11 as of January 2026.
How old do you have to be to fly from London Heathrow Airport to Portland Airport?
The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from London Heathrow Airport to Portland Airport.
What documentation or ID do you need to fly to Portland Airport?
The travel and health documents required for your trip to Portland 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 license, and a passport valid for six-months after you plan to arrive at Portland 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 London Heathrow Airport to Portland?
Based on momondo bookings for this flight route, the most popular plane model on flight routes from London Heathrow Airport to Portland is Boeing 787-8 Dreamliner (41.66% of total bookings). The next most popular plane models are Boeing 787-10 Dreamliner (29.38%), Boeing 787-9 Dreamliner (18.34%), and Boeing 777-300ER (3.03%).
What is the most popular airline from London Heathrow Airport to Portland?
Based on momondo bookings for flights between London Heathrow Airport and Portland, the leading airline is British Airways, making up 50% of the total bookings. Other popular airlines include Virgin Atlantic with 10%, Finnair with 9%, and Icelandair with 7%.

Best airlines flying from London Heathrow Airport to Portland

Compare and see reviews for airlines that fly from London Heathrow Airport to Portland with momondo

Airline	Rating	Free Cancellation	Price
Icelandair	PriceFrom £432	Free Cancellation	Rating 7.1 606 reviews	Search Icelandair flights
United Airlines	PriceFrom £484	Free Cancellation	Rating 7.4 9,219 reviews	Search United Airlines flights
Air Canada	PriceFrom £485	Free Cancellation	Rating 7.1 10,668 reviews	Search Air Canada flights
Lufthansa	PriceFrom £493	Free Cancellation	Rating 6.8 7,758 reviews	Search Lufthansa flights
Virgin Atlantic	PriceFrom £495	Free Cancellation	Rating 7.5 678 reviews	Search Virgin Atlantic flights
British Airways	PriceFrom £499	Free Cancellation	Rating 6.7 7,706 reviews	Search British Airways flights
Finnair	PriceFrom £501	Free Cancellation	Rating 7.6 1,356 reviews	Search Finnair flights
KLM	PriceFrom £510	Free Cancellation	Rating 7.7 1,444 reviews	Search KLM flights
American Airlines	PriceFrom £528	Free Cancellation	Rating 7.2 11,213 reviews	Search American Airlines flights
Iberia	PriceFrom £560	Free Cancellation	Rating 7.0 3,100 reviews	Search Iberia flights

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Vancouver

Seaside

Astoria

Why use momondo?

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

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Portland from London.

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

Yes. momondo enables you to select and highlight flights to Portland from London with this policy.

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

momondo helps you find the best flight between London and Portland by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

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

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

An easier way to manage your Portland 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

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Cheap flights from London Heathrow Airport to Portland from £341

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Find the cheapest flights from London Heathrow Airport to Portland

Cheap return flights

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Cheap last-minute flights

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British Airways flights from London Heathrow Airport to Portland

Our best British Airways deals on London Heathrow Airport to Portland flight tickets

Icelandair flights from London Heathrow Airport to Portland

Our best Icelandair deals on London Heathrow Airport to Portland flight tickets

momondo Fare Finder

Use the filters below to find and compare flights from London Heathrow Airport to Portland that are best for you.

See travel insights to Portland from

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

What is the typical price of a round-trip flight between London Heathrow Airport and Portland?

What is the cheapest month to fly to Portland?

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

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

What is the cheapest London Heathrow to Portland flight route?

Fly from London Heathrow to Portland for the best London Heathrow - Portland flight prices

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

What cabin class options are available on London Heathrow to Portland flights?

There are 3 cabin classes available to choose from on London Heathrow to Portland flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

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

As of January 2026, prices for London Heathrow Airport to Portland flights are approximately 11% more expensive when compared to flights at the same time last year.

What is the cheapest airline that flies from London Heathrow to Portland?

Icelandair is the most popular carrier operating from London Heathrow to Portland

Which airlines fly to Portland?

How often are flights from London to Portland delayed?

Historically, on average around 20% of flights between London and Portland have experienced a delay on any given week. The average delay length over the past 12 months has been 119 minutes.

What is the most punctual flight time for London to Portland flights?

Generally, flights departing in the early afternoon tend to experience fewer delays. Flights departing in the early afternoon have, in the past, seen delays more frequently in comparison.

What day of the week experiences the fewest flight delays on this route?

Friday is statistically the day of the week that experiences the fewest delays on this flight route. Sunday has historically seen more delays on average compared to the rest of the week.

Which airline has the best punctuality record on London to Portland flights?

According to our data, British Airways have had the fewest delays on this route over the last 12 months, with about 20% of their flights experiencing any sort of delay.

Which airport is the most popular for stopovers for flights between London Heathrow Airport and Portland?

Denver (DEN) was the most common stop: 27% of momondo users choosing one-stop flights on this route connected there.

Which stopover airport offers the lowest fares from London Heathrow Airport to Portland?

Flights via Reykjavik (KEF) offer the lowest average return price of £540.

Which stopover airport has the shortest travel time from London Heathrow Airport to Portland?

Flights connecting via Seattle (SEA) have the shortest average one-way travel time: 13h 14m.

Which stopover airport has the shortest connection time from London Heathrow Airport to Portland?

Denver (DEN) has the shortest average stopover time for this route: 1h 28m.

When to book flights from London Heathrow Airport to Portland

Cheap London Heathrow Airport to Portland (LHR to PDX) flight deals and tips

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

Best price found

Fastest flight time

Direct flights

Airports in Portland

How far is London Heathrow to Portland by plane?

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

How many operators does momondo search for flights from London Heathrow Airport to Portland Airport?

How old do you have to be to fly from London Heathrow Airport to Portland Airport?

What documentation or ID do you need to fly to Portland Airport?

What is the most popular plane model from London Heathrow Airport to Portland?

What is the most popular airline from London Heathrow Airport to Portland?

Best airlines flying from London Heathrow Airport to Portland

Compare and see reviews for airlines that fly from London Heathrow Airport to Portland with momondo

Travelling to a place near Portland?

Why use momondo?

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

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

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

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

An easier way to manage your Portland 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 the United States

Airports servicing Oregon