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Cheap flights from London Heathrow Airport to Portland from £353

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 18/11. 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

Icelandair Logo
13:05 - 17:55LHR-PDX
12h 50m1 stop
Icelandair Logo
15:20 - 11:55PDX-LHR
12h 35m1 stop
£458Icelandair
Find Deal
Fri, 5 Sep - Thu, 18 Sep
Icelandair Logo
13:05 - 17:55LHR-PDX
12h 50m1 stop
Icelandair Logo
15:20 - 11:55PDX-LHR
12h 35m1 stop
£459Icelandair
Find Deal
Thu, 4 Sep - Mon, 15 Sep
Icelandair Logo
21:25 - 17:55LHR-PDX
28h 30m1 stop
Icelandair Logo
15:20 - 11:55PDX-LHR
12h 35m1 stop
£463Icelandair
Find Deal
Thu, 11 Sep - Wed, 24 Sep
British Airways Logo
15:40 - 17:35LHR-PDX
9h 55mdirect
British Airways Logo
13:09 - 10:30PDX-LHR
13h 21m1 stop
£530British Airways
Find Deal
Tue, 9 Sep - Mon, 15 Sep
British Airways Logo
14:55 - 22:59LHR-PDX
16h 04m1 stop
British Airways Logo
17:45 - 11:20PDX-LHR
9h 35mdirect
£532British Airways
Find Deal
Wed, 26 Nov - Wed, 21 Jan
United Airlines Logo
06:30 - 14:46LHR-PDX
16h 16m2 stops
United Airlines Logo
10:51 - 11:45PDX-LHR
16h 54m1 stop
£537United Airlines
Find Deal
Mon, 8 Sep - Sun, 21 Sep
United Airlines Logo
06:30 - 14:46LHR-PDX
16h 16m2 stops
United Airlines Logo
14:15 - 11:45PDX-LHR
13h 30m1 stop
£538United Airlines
Find Deal
Thu, 11 Sep - Wed, 24 Sep
Virgin Atlantic Logo
06:30 - 11:20LHR-PDX
12h 50m1 stop
Virgin Atlantic Logo
11:50 - 08:55PDX-LHR
13h 05m1 stop
£541Virgin Atlantic
Find Deal
Mon, 1 Sep - Wed, 10 Sep
Virgin Atlantic Logo
06:30 - 11:20LHR-PDX
12h 50m1 stop
Virgin Atlantic Logo
07:19 - 06:25PDX-LHR
15h 06m1 stop
£546Virgin Atlantic
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Mon, 25 Aug - Tue, 9 Sep
Lufthansa Logo
06:30 - 23:01LHR-PDX
24h 31m2 stops
Lufthansa Logo
09:55 - 09:35PDX-LHR
15h 40m2 stops
£554Lufthansa
Find Deal
Sun, 21 Sep - Sat, 11 Oct

American Airlines flights from London Heathrow Airport to Portland

Our best American Airlines deals on London Heathrow Airport to Portland flight tickets
American Airlines
25 Aug
LHR15:40London Heathrow
9h 55m
PDX17:35Portland
9 Sept
PDX19:25Portland
9h 35m
LHR13:00London Heathrow
£552
Find similar
American Airlines
1 Sept
LHR15:40London Heathrow
9h 55m
PDX17:35Portland
15 Oct
PDX19:25Portland
9h 35m
LHR13:00London Heathrow
£553
Find similar
American Airlines
25 Aug
LHR15:40London Heathrow
9h 55m
PDX17:35Portland
9 Sept
PDX19:25Portland
9h 35m
LHR13:00London Heathrow
£555
Find similar

United Airlines flights from London Heathrow Airport to Portland

Our best United Airlines deals on London Heathrow Airport to Portland flight tickets
United Airlines
8 Sept
LHR06:30London Heathrow
16h 16m
2 stops
PDX14:46Portland
21 Sept
PDX10:51Portland
16h 54m
1 stop
LHR11:45London Heathrow
£537
Find similar
United Airlines
11 Sept
LHR06:30London Heathrow
16h 16m
2 stops
PDX14:46Portland
24 Sept
PDX14:15Portland
13h 30m
1 stop
LHR11:45London Heathrow
£538
Find similar
United Airlines
1 Sept
LHR08:30London Heathrow
20h 07m
2 stops
PDX20:37Portland
13 Oct
PDX05:30Portland
21h 40m
2 stops
LHR11:10London Heathrow
£538
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 15 August 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

Fri 5/9

13:05-17:55

1 stop12h 50m

Portland

Thu 18/9

15:20-11:55

1 stop12h 35m

£458

LondonPortland

LHR - PDX

LHRPDX

London Heathrow

Thu 4/9

13:05-17:55

1 stop12h 50m

Portland

Mon 15/9

15:20-11:55

1 stop12h 35m

£459

LondonPortland

LHR - PDX

LHRPDX

London Heathrow

Thu 11/9

21:25-17:55

1 stop28h 30m

Portland

Wed 24/9

15:20-11:55

1 stop12h 35m

£463

LondonPortland

LHR - PDX

LHRPDX

London Heathrow

Tue 9/9

15:40-17:35

Nonstop9h 55m

Portland

Mon 15/9

13:09-10:30

1 stop13h 21m

£530

LondonPortland

LHR - PDX

LHRPDX

London Heathrow

Wed 26/11

14:55-22:59

1 stop16h 04m

Portland

Wed 21/1

17:45-11:20

Nonstop9h 35m

£532

LondonPortland

LHR - PDX

LHRPDX

London Heathrow

Mon 8/9

06:30-14:46

2 stops16h 16m

Portland

Sun 21/9

10:51-11:45

1 stop16h 54m

£537

LondonPortland

LHR - PDX

LHRPDX

London Heathrow

Thu 11/9

06:30-14:46

2 stops16h 16m

Portland

Wed 24/9

14:15-11:45

1 stop13h 30m

£538

LondonPortland

LHR - PDX

LHRPDX

London Heathrow

Mon 1/9

06:30-11:20

1 stop12h 50m

Portland

Wed 10/9

11:50-08:55

1 stop13h 05m

£541

LondonPortland

LHR - PDX

LHRPDX

London Heathrow

Mon 25/8

06:30-11:20

1 stop12h 50m

Portland

Tue 9/9

07:19-06:25

1 stop15h 06m

£546

LondonPortland

LHR - PDX

LHRPDX

London Heathrow

Sun 21/9

06:30-23:01

2 stops24h 31m

Portland

Sat 11/10

09:55-09:35

2 stops15h 40m

£554

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

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 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 £580, 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 January to fly from London Heathrow Airport, when ticket prices are also cheap, with an average price of £586.

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 Tuesday when prices can be found for as low as £652. 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 £769.

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 £606 when looking at flights departing in the morning. Try not to purchase tickets in the afternoon because they tend to be around £733. 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 £655 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 £594 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 August 2025, prices for London Heathrow Airport to Portland flights are approximately 2% 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

£353

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 £353. The best return flight deal from London Heathrow Airport to Portland found on momondo in the last 72 hours is £458.
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 £438Free CancellationRating
7.0
526 reviews
Search Icelandair flights
United AirlinesPriceFrom £484Free CancellationRating
7.4
8,915 reviews
Search United Airlines flights
Air CanadaPriceFrom £492Free CancellationRating
7.1
9,956 reviews
Search Air Canada flights
FinnairPriceFrom £496Free CancellationRating
7.6
1,321 reviews
Search Finnair flights
LufthansaPriceFrom £500Free CancellationRating
6.8
7,321 reviews
Search Lufthansa flights
Virgin AtlanticPriceFrom £502Free CancellationRating
7.4
657 reviews
Search Virgin Atlantic flights
British AirwaysPriceFrom £502Free CancellationRating
6.6
7,267 reviews
Search British Airways flights
KLMPriceFrom £547Free CancellationRating
7.8
1,384 reviews
Search KLM flights
American AirlinesPriceFrom £551Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
IberiaPriceFrom £566Free CancellationRating
7.0
2,882 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 £673. Generally, Finnair has 7 flights on this route every week with an average price of £808. 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 £927, 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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