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Cheap flights from London Heathrow Airport to Portland from £451

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 Portland departing on 28/11. 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
0 bags

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Find the cheapest flights from London Heathrow Airport to Portland

Cheap return flights

Air Canada Logo
10:15 - 18:46LHR-PDX
16h 31m2 stops
Air Canada Logo
15:25 - 13:20PDX-LHR
13h 55m1 stop
£502Air Canada
Find Deal
Mon, 6 Oct - Mon, 20 Oct
Air Canada Logo
10:15 - 18:46LHR-PDX
16h 31m2 stops
Air Canada Logo
15:25 - 13:20PDX-LHR
13h 55m1 stop
£505Air Canada
Find Deal
Mon, 29 Sep - Mon, 20 Oct
British Airways Logo
13:45 - 15:55LHR-PDX
10h 10mdirect
British Airways Logo
17:45 - 11:20PDX-LHR
9h 35mdirect
£522British Airways
Find Deal
Mon, 24 Nov - Mon, 1 Dec
British Airways Logo
13:45 - 15:55LHR-PDX
10h 10mdirect
British Airways Logo
14:16 - 11:40PDX-LHR
14h 24m1 stop
£544British Airways
Find Deal
Fri, 6 Mar - Tue, 10 Mar
Icelandair Logo
21:25 - 17:55LHR-PDX
28h 30m1 stop
Icelandair Logo
15:20 - 11:50PDX-LHR
12h 30m1 stop
£560Icelandair
Find Deal
Mon, 20 Oct - Sat, 25 Oct
Icelandair Logo
21:25 - 17:55LHR-PDX
28h 30m1 stop
Icelandair Logo
15:20 - 11:50PDX-LHR
12h 30m1 stop
£568Icelandair
Find Deal
Mon, 20 Oct - Sat, 25 Oct
Virgin Atlantic Logo
14:45 - 22:40LHR-PDX
15h 55m1 stop
Virgin Atlantic Logo
17:10 - 13:05PDX-LHR
11h 55m1 stop
£571Virgin Atlantic
Find Deal
Mon, 15 Dec - Sat, 20 Dec
Virgin Atlantic Logo
15:05 - 11:00LHR-PDX
27h 55m2 stops
Virgin Atlantic Logo
17:45 - 06:55PDX-LHR
29h 10m2 stops
£588Virgin Atlantic
Find Deal
Sat, 27 Dec - Mon, 12 Jan
Finnair Logo
15:40 - 17:35LHR-PDX
9h 55mdirect
Finnair Logo
23:59 - 06:50PDX-LHR
23h 51m1 stop
£597Finnair
Find Deal
Wed, 22 Oct - Sun, 26 Oct
Finnair Logo
13:45 - 15:55LHR-PDX
10h 10mdirect
Finnair Logo
18:45 - 11:20PDX-LHR
9h 35mdirect
£609Finnair
Find Deal
Fri, 6 Mar - Fri, 13 Mar

Air Canada flights from London Heathrow Airport to Portland

Our best Air Canada deals on London Heathrow Airport to Portland flight tickets
Air Canada
6 Oct
LHR10:15London Heathrow
16h 31m
2 stops
PDX18:46Portland
20 Oct
PDX15:25Portland
13h 55m
1 stop
LHR13:20London Heathrow
£502
Find similar
Air Canada
29 Sept
LHR10:15London Heathrow
16h 31m
2 stops
PDX18:46Portland
20 Oct
PDX15:25Portland
13h 55m
1 stop
LHR13:20London Heathrow
£505
Find similar
Air Canada
6 Oct
LHR10:15London Heathrow
20h 46m
2 stops
PDX23:01Portland
20 Oct
PDX09:55Portland
17h 55m
2 stops
LHR11:50London Heathrow
£506
Find similar

Scandinavian Airlines flights from London Heathrow Airport to Portland

Our best Scandinavian Airlines deals on London Heathrow Airport to Portland flight tickets
Scandinavian Airlines
23 Oct
LHR10:20London Heathrow
20h 33m
2 stops
PDX22:53Portland
29 Oct
PDX10:23Portland
28h 17m
2 stops
LHR21:40London Heathrow
£565
Find similar
Scandinavian Airlines
23 Oct
LHR06:40London Heathrow
24h 13m
2 stops
PDX22:53Portland
29 Oct
PDX10:23Portland
25h 07m
2 stops
LHR18:30London Heathrow
£592
Find similar
Scandinavian Airlines
23 Oct
LHR10:20London Heathrow
20h 33m
2 stops
PDX22:53Portland
29 Oct
PDX12:40Portland
25h 55m
3 stops
LHR21:35London Heathrow
£595
Find similar

momondo Fare Finder

 
Customise your flight search to find flights from London Heathrow Airport to Portland 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 279,928 searches. Data last updated 16 September 2025.
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

Mon 6/10

10:15-18:46

2 stops16h 31m

Portland

Mon 20/10

15:25-13:20

1 stop13h 55m

£502

LondonPortland

LHR - PDX

LHRPDX

London Heathrow

Mon 29/9

10:15-18:46

2 stops16h 31m

Portland

Mon 20/10

15:25-13:20

1 stop13h 55m

£505

LondonPortland

LHR - PDX

LHRPDX

London Heathrow

Mon 24/11

13:45-15:55

Nonstop10h 10m

Portland

Mon 1/12

17:45-11:20

Nonstop9h 35m

£522

LondonPortland

LHR - PDX

LHRPDX

London Heathrow

Fri 6/3

13:45-15:55

Nonstop10h 10m

Portland

Tue 10/3

14:16-11:40

1 stop14h 24m

£544

LondonPortland

LHR - PDX

LHRPDX

London Heathrow

Mon 20/10

21:25-17:55

1 stop28h 30m

Portland

Sat 25/10

15:20-11:50

1 stop12h 30m

£560

LondonPortland

LHR - PDX

LHRPDX

London Heathrow

Mon 20/10

21:25-17:55

1 stop28h 30m

Portland

Sat 25/10

15:20-11:50

1 stop12h 30m

£568

LondonPortland

LHR - PDX

LHRPDX

London Heathrow

Mon 15/12

14:45-22:40

1 stop15h 55m

Portland

Sat 20/12

17:10-13:05

1 stop11h 55m

£571

LondonPortland

LHR - PDX

LHRPDX

London Heathrow

Sat 27/12

15:05-11:00

2 stops27h 55m

Portland

Mon 12/1

17:45-06:55

2 stops29h 10m

£588

LondonPortland

LHR - PDX

LHRPDX

London Heathrow

Wed 22/10

15:40-17:35

Nonstop9h 55m

Portland

Sun 26/10

23:59-06:50

1 stop23h 51m

£597

LondonPortland

LHR - PDX

LHRPDX

London Heathrow

Fri 6/3

13:45-15:55

Nonstop10h 10m

Portland

Fri 13/3

18:45-11:20

Nonstop9h 35m

£609

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
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See travel insights to Portland from

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

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 September. Flight prices, which tend to average around £569, 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 November to fly from London Heathrow Airport, when ticket prices are also cheap, with an average price of £572.

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 £647. 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 Sunday, with ticket prices averaging around £783.

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

Flying to Portland from London Heathrow Airport in the morning is the least expensive time of day to depart. momondo users have found prices as low as £605 when looking at flights departing in the morning. Try not to purchase tickets in the afternoon because they tend to be around £723. 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 £652 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 £582 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.

Can stopping save me money on London Heathrow Airport to Portland flights?

You could potentially save up to 18% on your flight if you consider stops on a London Heathrow Airport to Portland flight.

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

As of September 2025, prices for London Heathrow Airport to Portland flights are approximately 4% cheaper 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

£740

Fastest flight time

9h 55m

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 £740. The best return flight deal from London Heathrow Airport to Portland found on momondo in the last 72 hours is £571.
The fastest flight from London Heathrow Airport to Portland takes 9h 55m
Direct flights go from London Heathrow Airport to Portland every day.
There is 1 airport near Portland: 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 9h 55m 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?

  • 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?

  • 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
Airline
Rating
Free Cancellation
Price
IcelandairPriceFrom £432Free CancellationRating
7.0
544 reviews
Search Icelandair flights
Air CanadaPriceFrom £490Free CancellationRating
7.1
10,000 reviews
Search Air Canada flights
FinnairPriceFrom £495Free CancellationRating
7.6
1,323 reviews
Search Finnair flights
LufthansaPriceFrom £499Free CancellationRating
6.8
7,407 reviews
Search Lufthansa flights
Virgin AtlanticPriceFrom £499Free CancellationRating
7.4
664 reviews
Search Virgin Atlantic flights
British AirwaysPriceFrom £500Free CancellationRating
6.6
7,361 reviews
Search British Airways flights
United AirlinesPriceFrom £507Free CancellationRating
7.4
8,929 reviews
Search United Airlines flights
KLMPriceFrom £546Free CancellationRating
7.8
1,385 reviews
Search KLM flights
American AirlinesPriceFrom £549Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
IberiaPriceFrom £565Free CancellationRating
7.0
2,924 reviews
Search Iberia flights

  • Finnair Flights From London Heathrow Airport to Portland

    The lowest priced Finnair flight from London Heathrow Airport to Portland from the last 72 hours was £672. Generally, Finnair has 7 flights on this route every week with an average price of £802. Finnair is rated 7.6/10 by our users.

  • American Airlines Flights From London Heathrow Airport to Portland

    American Airlines (7.2/10 from 10,000 reviews) operates around 7 flights from London Heathrow Airport to Portland in any given week. The average American Airlines airfare for this route is around £1,042, with deals from around £747 rare but found on momondo. Referenced prices are for round-trip London Heathrow Airport to Portland flight searches in the last 72 hours.

Travelling to a place near Portland?

Book flights to Portland if you plan to visit one of these locations
Vancouver
Cannon Beach
Astoria
Seaside

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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