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 is the cheapest airline that flies from London to Portland?

Icelandair, Lufthansa, and Virgin Atlantic are the most popular carriers operating from London to Portland

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

Flights via Reykjavik (KEF) offer the lowest average return price of £538.

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

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

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 115 minutes.

Which airlines fly to Portland?

British Airways, Virgin Atlantic and Finnair are the top three most popular airlines that fly to Portland from London according to our data. British Airways is the first choice among our users, with 65% 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.

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 and Portland?

Reykjavik (KEF) was the most common stop: 36% of momondo users choosing one-stop flights on this route connected there.

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

San Francisco (SFO) has the shortest average stopover time for this route: 1h 23m.

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. Wednesday has historically seen more delays on average compared to the rest of the week.

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

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

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

As of February 2026, there are 11 operators available to choose from for flights from London to Portland Airport.

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

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

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

£307 Cheap Flights from London to Portland in 2026

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

Prices are currently low for flights on this route. Typical prices usually range from £521 to £615. The lowest price recently found on this route was £443.

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Find the cheapest flights from London to Portland

Round-trip

One-way

Last minute

Direct

Cheap return flights

Enter your travel dates to find the best prices.

06:40 - 18:00

LHR

PDX

18h 20m

2 stops

15:30 - 21:20

PDX

LHR

21h 50m

2 stops

£443Multiple Airlines

Fri, 13 Mar - Tue, 21 Apr

11:55 - 17:00

LGW

PDX

13h 05m

1 stop

15:45 - 10:55

PDX

LGW

12h 10m

1 stop

£449Icelandair

Fri, 6 Mar - Mon, 9 Mar

11:55 - 17:00

LGW

PDX

13h 05m

1 stop

15:45 - 10:55

PDX

LGW

12h 10m

1 stop

£451Icelandair

Fri, 6 Mar - Mon, 9 Mar

20:35 - 18:00

LHR

PDX

28h 25m

1 stop

15:30 - 11:55

PDX

LHR

12h 25m

1 stop

£453Icelandair

Sat, 14 Mar - Tue, 21 Apr

11:55 - 18:00

LGW

PDX

13h 05m

1 stop

15:30 - 14:40

PDX

LGW

15h 10m

1 stop

£472Icelandair

Fri, 13 Mar - Tue, 21 Apr

07:30 - 20:49

LHR

PDX

21h 19m

2 stops

10:39 - 11:05

PDX

LHR

17h 26m

1 stop

£522Multiple Airlines

Tue, 3 Mar - Tue, 10 Mar

20:05 - 18:15

LCY

PDX

29h 10m

2 stops

13:55 - 17:20

PDX

LCY

19h 25m

2 stops

£657Virgin Atlantic

Mon, 16 Mar - Mon, 30 Mar

18:55 - 18:15

LCY

PDX

30h 20m

2 stops

10:42 - 09:30

PDX

LCY

14h 48m

2 stops

£659Virgin Atlantic

Mon, 16 Mar - Mon, 30 Mar

17:45 - 20:54

STN

PDX

35h 09m

2 stops

11:00 - 09:55

PDX

STN

38h 55m

2 stops

£1,259Turkish Airlines

Sun, 5 Jul - Sat, 18 Jul

10:50 - 19:05

STN

PDX

40h 15m

2 stops

11:00 - 09:55

PDX

STN

38h 55m

2 stops

£1,314Turkish Airlines

Sun, 5 Jul - Sat, 18 Jul

Lufthansa flights from London to Portland

Our best Lufthansa deals on London to Portland flight tickets

Lufthansa

2 Mar

LHR09:30London Heathrow

19h 45m

2 stops

PDX21:15Portland

9 Mar

PDX09:50Portland

19h 00m

1 stop

LHR11:50London Heathrow

£586

Lufthansa

16 Mar

LHR09:30London Heathrow

22h 05m

2 stops

PDX00:35Portland

30 Mar

PDX15:15Portland

16h 25m

2 stops

LHR15:40London Heathrow

£589

Lufthansa

16 Mar

LHR10:25London Heathrow

15h 49m

1 stop

PDX19:14Portland

30 Mar

PDX12:50Portland

12h 50m

1 stop

LHR09:40London Heathrow

£608

British Airways flights from London to Portland

Our best British Airways deals on London to Portland flight tickets

British Airways

16 Mar

LHR13:45London Heathrow

10h 10m

PDX16:55Portland

30 Mar

PDX19:30Portland

9h 30m

LHR13:00London Heathrow

£618

British Airways

2 Mar

LHR10:05London Heathrow

17h 11m

1 stop

PDX19:16Portland

9 Mar

PDX18:45Portland

9h 35m

LHR11:20London Heathrow

£624

British Airways

6 Mar

LHR13:45London Heathrow

10h 10m

PDX15:55Portland

9 Mar

PDX12:04Portland

14h 56m

1 stop

LHR10:00London Heathrow

£629

Fly from

Fly to

Route

Depart

Return

Price

LondonPortland

LHR - PDX

LHRPDX

London Heathrow

Fri 13/3

06:40-18:00

2 stops18h 20m

Portland

Tue 21/4

15:30-21:20

2 stops21h 50m

£443

LondonPortland

LGW - PDX

LGWPDX

London Gatwick

Fri 6/3

11:55-17:00

1 stop13h 05m

Portland

Mon 9/3

15:45-10:55

1 stop12h 10m

£449

LondonPortland

LGW - PDX

LGWPDX

London Gatwick

Fri 6/3

11:55-17:00

1 stop13h 05m

Portland

Mon 9/3

15:45-10:55

1 stop12h 10m

£451

LondonPortland

LHR - PDX

LHRPDX

London Heathrow

Sat 14/3

20:35-18:00

1 stop28h 25m

Portland

Tue 21/4

15:30-11:55

1 stop12h 25m

£453

LondonPortland

LGW - PDX

LGWPDX

London Gatwick

Fri 13/3

11:55-18:00

1 stop13h 05m

Portland

Tue 21/4

15:30-14:40

1 stop15h 10m

£472

LondonPortland

LHR - PDX

LHRPDX

London Heathrow

Tue 3/3

07:30-20:49

2 stops21h 19m

Portland

Tue 10/3

10:39-11:05

1 stop17h 26m

£522

LondonPortland

LCY - PDX

LCYPDX

London City

Mon 16/3

20:05-18:15

2 stops29h 10m

Portland

Mon 30/3

13:55-17:20

2 stops19h 25m

£657

LondonPortland

LCY - PDX

LCYPDX

London City

Mon 16/3

18:55-18:15

2 stops30h 20m

Portland

Mon 30/3

10:42-09:30

2 stops14h 48m

£659

LondonPortland

STN - PDX

STNPDX

London Stansted

Sun 5/7

17:45-20:54

2 stops35h 09m

Portland

Sat 18/7

11:00-09:55

2 stops38h 55m

£1,259

LondonPortland

STN - PDX

STNPDX

London Stansted

Sun 5/7

10:50-19:05

2 stops40h 15m

Portland

Sat 18/7

11:00-09:55

2 stops38h 55m

£1,314

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 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 and Portland?

What is the cheapest month to fly to Portland?

The cheapest month to fly to Portland from London is in September. Flight prices, which tend to average around £538, are often lower during this time because this is during the off-season. If you don’t want to visit Portland in September, then you should wait until February to fly from London, when ticket prices are also cheap, with an average price of £561.

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 £657. 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 £742.

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

Flying to Portland from London at midday is the least expensive time of day to depart. momondo users have found prices as low as £659 when looking at flights departing at midday. Try not to purchase tickets in the afternoon because they tend to be around £720. Of course, these prices can vary depending on the time of year and what airport you fly to.

What is the cheapest London to Portland flight route?

Fly from London Heathrow to Portland for the best London - 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 when booking weeks ahead of your departure date. In general, you can expect to find flights to Portland for around £645 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 for as low as £577 on momondo.

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

There are 3 cabin classes available to choose from on London 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 to Portland flight prices changed over time?

As of February 2026, prices for London to Portland flights are approximately 32% more expensive when compared to flights at the same time last year.

When to book flights from London to Portland

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

Estimated return price

Cheap London to Portland (LON to PDX) flight deals and tips

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

Best price found	£670
Fastest flight time	10h 00m
Direct flights	Every day
Airports in Portland	1 airport

The best flight deal from London to Portland found on momondo in the last 72 hours is £670

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

Direct flights go from London to Portland every day.

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

Search flight deals

How far is London to Portland by plane?
The straight-line distance from London to Portland is 4909.8 mi. Flights usually cover this in 10h 00m, depending on flying conditions and air traffic around both airports.
When did momondo last update prices for flights from London to Portland Airport?
Prices for flights from London to Portland Airport are refreshed on a daily basis.
How many operators does momondo search for flights from London to Portland Airport?
As of February 2026, there are 11 operators available to choose from for flights from London to Portland Airport.
How old do you have to be to fly from London 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 to Portland Airport.
What documentation or ID do you need to fly to Portland Airport?
The travel and health documents you'll need for your trip to Portland 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 Portland Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.
What is the most popular plane model from London to Portland?
Based on momondo bookings for this flight route, the most popular plane model on flight routes from London to Portland is Boeing 787-8 Dreamliner (38.71% of total bookings). The next most popular plane models are Boeing 787-10 Dreamliner (32.00%), Boeing 787-9 Dreamliner (18.43%), and Boeing 777-300ER (3.14%).
What is the most popular airline from London to Portland?
momondo data reveals that the most frequently booked airline on the route from London to Portland is British Airways, representing 47% of all bookings. The subsequent popular airlines are Icelandair at 12%, Virgin Atlantic at 9%, and American Airlines at 7%.

Best airlines flying from London to Portland

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

Airline	Rating	Free Cancellation	Price
Icelandair	PriceFrom £431	Free Cancellation	Rating 7.1 606 reviews	Search Icelandair flights
United Airlines	PriceFrom £485	Free Cancellation	Rating 7.4 9,229 reviews	Search United Airlines flights
Air Canada	PriceFrom £487	Free Cancellation	Rating 7.1 10,673 reviews	Search Air Canada flights
Lufthansa	PriceFrom £495	Free Cancellation	Rating 6.8 7,758 reviews	Search Lufthansa flights
Virgin Atlantic	PriceFrom £497	Free Cancellation	Rating 7.5 678 reviews	Search Virgin Atlantic flights
British Airways	PriceFrom £501	Free Cancellation	Rating 6.7 7,709 reviews	Search British Airways flights
Finnair	PriceFrom £503	Free Cancellation	Rating 7.6 1,357 reviews	Search Finnair flights
KLM	PriceFrom £511	Free Cancellation	Rating 7.7 1,446 reviews	Search KLM flights
American Airlines	PriceFrom £529	Free Cancellation	Rating 7.2 11,211 reviews	Search American Airlines flights
Iberia	PriceFrom £562	Free Cancellation	Rating 7.0 3,100 reviews	Search Iberia flights

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Why use momondo?

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

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from London to Portland for you.

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

Yes. momondo allows you to filter the results for London to Portland flights to just show those with flexible booking policies.

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

momondo provides multiple filters to help you find the best flight to Portland from London. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

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

Price alerts on flights to Portland 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.

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.

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Cheap flights from London to Portland from £307

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 to Portland departing on 27/5. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

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Big names, great deals

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Filter for what you want

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Find the cheapest flights from London to Portland

Cheap return flights

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Lufthansa flights from London to Portland

Our best Lufthansa deals on London to Portland flight tickets

British Airways flights from London to Portland

Our best British Airways deals on London to Portland flight tickets

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

See travel insights to Portland from

How to get the cheapest flight ticket from London to Portland

What is the typical price of a round-trip flight between London 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 to Portland flight route?

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

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

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

There are 3 cabin classes available to choose from on London 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 to Portland flight prices changed over time?

As of February 2026, prices for London to Portland flights are approximately 32% more expensive when compared to flights at the same time last year.

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

Icelandair, Lufthansa, and Virgin Atlantic are the most popular carriers operating from London 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 115 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. Wednesday 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 and Portland?

Reykjavik (KEF) was the most common stop: 36% of momondo users choosing one-stop flights on this route connected there.

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

Flights via Reykjavik (KEF) offer the lowest average return price of £538.

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

San Francisco (SFO) has the shortest average stopover time for this route: 1h 23m.

When to book flights from London to Portland

Cheap London to Portland (LON to PDX) flight deals and tips

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

Best price found

Fastest flight time

Direct flights

Airports in Portland

How far is London to Portland by plane?

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

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

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

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

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

What is the most popular airline from London to Portland?

Best airlines flying from London to Portland

Compare and see reviews for airlines that fly from London 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