Cheap flights from London Heathrow Airport to Portland from £345

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 26/4. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — PDX
29 Apr — 6 May1
1 adult
1 adult, Economy, 0 bags
Cheapflights Tip: The best prices from London Heathrow to Portland are usually found in November or February, booked 73 days in advance, depart on a Wednesday or Thursday and return on a Wednesday

Cheap flight deals from Heathrow to Portland

Enter your travel dates to find the best prices.

Cheapest flights from Heathrow to Portland
Explore the most affordable flight options available from Heathrow to Portland. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 30 March 2026.

Fri 28/813:05
LHR
-
PDX
1 stop12h 50m
Icelandair
Sat 12/915:30
PDX
-
LHR
1 stop12h 25m
Icelandair
Deal found 26/3£508
Mon 11/513:05
LHR
-
PDX
1 stop12h 55m
Icelandair
Mon 18/515:30
PDX
-
LHR
1 stop12h 25m
Icelandair
Deal found 27/3£544
Fri 8/513:05
LHR
-
PDX
1 stop12h 55m
Icelandair
Fri 22/519:05
PDX
-
LHR
1 stop17h 15m
Icelandair
Deal found 28/3£555
Wed 9/913:05
LHR
-
PDX
1 stop12h 50m
Icelandair
Wed 16/915:30
PDX
-
LHR
1 stop12h 25m
Icelandair
Deal found 28/3£558
Mon 21/921:25
LHR
-
PDX
1 stop28h 30m
Icelandair
Wed 30/915:30
PDX
-
LHR
1 stop20h 50m
Icelandair
Deal found 25/3£559
Thu 10/921:25
LHR
-
PDX
1 stop28h 30m
Icelandair
Thu 24/915:30
PDX
-
LHR
1 stop12h 25m
Icelandair
Deal found 30/3£562
Wed 2/921:25
LHR
-
PDX
1 stop22h 20m
Icelandair
Wed 9/919:05
PDX
-
LHR
1 stop17h 15m
Icelandair
Deal found 28/3£563
Mon 14/921:25
LHR
-
PDX
1 stop28h 30m
Icelandair
Wed 30/915:30
PDX
-
LHR
1 stop20h 50m
Icelandair
Deal found 28/3£567
Fri 24/413:05
LHR
-
PDX
1 stop12h 55m
Icelandair
Fri 22/519:05
PDX
-
LHR
1 stop17h 15m
Icelandair
Deal found 26/3£572
Sat 25/421:25
LHR
-
PDX
1 stop28h 35m
Icelandair
Fri 22/519:05
PDX
-
LHR
1 stop17h 15m
Icelandair
Deal found 26/3£572

Find flight deals from Heathrow to Portland

Discover tips and strategies to find the most affordable flight options for your journey from Heathrow (LHR) to Portland (PDX). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 30 March 2026.

Round-trip from

£508

One-way from

£345

Popular in

July

Cheapest in

November

Average price

£685

Good round-trip deal

£720 or less

Good one-way deal

£632 or less
Icelandair
  • Icelandair
  • 28/8-12/9
  • 2 total stops
  • 25h 15m total
  • London to Portland
WestJet
  • WestJet
  • 26/4
  • 1 total stop
  • 31h 40m total
  • London to Portland
Highest demand for flights based on searches. 15% potential increase in price (£91 potential increase over avg. return price).
Cheapest flight prices on average. 2% potential price decrease (£14 potential savings vs. average return price).
Average for round-trip flights in March 2026
Price to beat on a round-trip flight from London Heathrow to Portland.
Price to beat on a one-way flight from London Heathrow to Portland.

Cheapflights Fare Finder

 
Customise your flight search to find flights from Heathrow 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, Cheapflights users made 858,174 searches. Data last updated 30 March 2026.
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

Cheapest return flight

LondonPortland

LHR - PDX

LHRPDX

London Heathrow

Mon 21/9

09:30-20:20

2 stops18h 50m

Portland

Wed 30/9

10:00-09:20

1 stop15h 20m

£686

LondonPortland

LHR - PDX

LHRPDX

London Heathrow

Fri 8/5

06:40-23:01

2 stops24h 21m

Portland

Fri 22/5

23:03-09:35

2 stops26h 32m

£705

LondonPortland

LHR - PDX

LHRPDX

London Heathrow

Mon 4/5

11:45-18:52

2 stops15h 07m

Portland

Mon 18/5

12:20-12:10

1 stop15h 50m

£713

LondonPortland

LHR - PDX

LHRPDX

London Heathrow

Mon 4/5

08:40-20:58

2 stops20h 18m

Portland

Mon 18/5

13:37-17:50

2 stops20h 13m

£717

LondonPortland

LHR - PDX

LHRPDX

London Heathrow

Fri 4/9

21:25-11:45

1 stop22h 20m

Portland

Wed 9/9

13:30-20:20

2 stops22h 50m

£722

LondonPortland

LHR - PDX

LHRPDX

London Heathrow

Fri 28/8

07:05-18:41

3 stops19h 36m

Portland

Sat 5/9

10:00-17:40

2 stops23h 40m

£750

LondonPortland

LHR - PDX

LHRPDX

London Heathrow

Fri 8/5

07:25-18:46

2 stops19h 21m

Portland

Fri 22/5

15:30-13:20

1 stop13h 50m

£759
Fastest return journey

LondonPortland

LHR - PDX

LHRPDX

London Heathrow

Thu 3/9

15:40-17:40

Nonstop10h 00m

Portland

Sat 12/9

19:30-13:00

Nonstop9h 30m

£798

LondonPortland

LHR - PDX

LHRPDX

London Heathrow

Sat 5/9

15:40-17:40

Nonstop10h 00m

Portland

Sat 26/9

19:30-13:00

Nonstop9h 30m

£798

LondonPortland

LHR - PDX

LHRPDX

London Heathrow

Fri 1/5

14:25-22:49

1 stop16h 24m

Portland

Sat 30/5

12:35-07:50

1 stop35h 15m

£830

Flights are sorted by cheapest return flights first.

Deals found on 25/3

Showing 1-10 of 23 resultsSorted by cheapest first
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2
3

Best time to book a flight from Heathrow to Portland

Have a flexible travel schedule? Discover the best time to fly to Portland from Heathrow with our price prediction graph.
Estimated return price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from London Heathrow Airport to Portland

How far ahead should I book a flight from London Heathrow Airport to Portland?

Use this chart to determine the optimal time to book a return flight from Heathrow to Portland. Price data was last updated on 13 March 2026.

To ensure you get the cheapest price possible for a flight from London Heathrow Airport to Portland, you should look to book at least 73 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

What is the cheapest month to book a flight from London Heathrow Airport to Portland?

Currently, February is the cheapest month in which you can book a flight from London Heathrow Airport to Portland (average of £458). Flying from London Heathrow Airport to Portland in January is currently the most expensive (average of £563). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from LHR to PDX?

Find hourly flight availability from Heathrow to Portland. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 30 March 2026.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from London Heathrow Airport to Portland as you normally would.

How much does it cost for a return flight from London Heathrow Airport to Portland?

Reviews of airlines servicing Portland

Get insights into the airlines that provide service to Portland. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Portland. Reviews last updated 30 March 2026.
Read reviews from past customers who have flown with Finnair,Virgin Atlantic, andIcelandair from London Heathrow Airport to Portland. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.

Comfort

7.5

Entertainment

6.9

Boarding

7.7

Food

6.7

Crew

8.2

Overall

7.7

Reviews

1 / 20
2.0
Mediocre

Vlad-Valentin,Jan 2026

LHR - YVR

baggage allowance was different between the outgoing and inbound flights

Comfort

7.5

Entertainment

6.9

Boarding

7.7

Food

6.7

Crew

8.2

Overall

7.7

Reviews

1 / 20
2.0
Mediocre

Vlad-Valentin,Jan 2026

LHR - YVR

baggage allowance was different between the outgoing and inbound flights

Comfort

7.5

Entertainment

6.9

Boarding

7.7

Food

6.7

Crew

8.2

Overall

7.7

Reviews

1 / 20
2.0
Mediocre

Vlad-Valentin,Jan 2026

LHR - YVR

baggage allowance was different between the outgoing and inbound flights

Comfort

7.5

Entertainment

6.9

Boarding

7.7

Food

6.7

Crew

8.2

Overall

7.7

Reviews

1 / 20
2.0
Mediocre

Vlad-Valentin,Jan 2026

LHR - YVR

baggage allowance was different between the outgoing and inbound flights

Comfort

7.5

Entertainment

6.9

Boarding

7.7

Food

6.7

Crew

8.2

Overall

7.7

Reviews

1 / 20
2.0
Mediocre

Vlad-Valentin,Jan 2026

LHR - YVR

baggage allowance was different between the outgoing and inbound flights

Comfort

7.5

Entertainment

6.9

Boarding

7.7

Food

6.7

Crew

8.2

Overall

7.7

Reviews

1 / 20
2.0
Mediocre

Vlad-Valentin,Jan 2026

LHR - YVR

baggage allowance was different between the outgoing and inbound flights

Related info for your journey

Find useful and relevant information for your journey from Heathrow to Portland. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
  • What airport do you fly into for flights to Portland from London Heathrow?

    Portland (PDX), located 6.0 mi from the city center, is the airport you fly into when you book flights from London Heathrow to Portland. 10 airlines have flights to Portland from London Heathrow on a regular basis. Booking flights from London Heathrow to Portland should not be difficult; the airport handles an average of 6 inbound flights from London Heathrow per day.

  • How long is the flight from London Heathrow Airport to Portland?

    United Airlines, Scandinavian Airlines, and Delta can get you from London Heathrow Airport to Portland in just under 15h 07m. Your travel time can differ by up to 9h 14m. London Heathrow Airport and Portland are separated by a distance of 4896 mi. Both multi-stop and direct flights can be found to your destination and back.

  • What are the cheapest airlines flying from London Heathrow Airport to Portland round-trip?

    Currently priced at £429, Icelandair will fly you from London Heathrow Airport to Portland and back. In addition to Icelandair, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from Lufthansa and Air Canada - these airlines can fly you to your destination from £499 and £503, respectively. Users have found that Icelandair is 35% cheaper than the other options available to this destination.

  • What are the cheapest airlines to fly from London Heathrow Airport to Portland one-way?

    The cheapet airlines for a one-way flight from London Heathrow Airport to Portland are British Airways (£431), Virgin Atlantic (£432), and Finnair (£562).

  • What are the most reliable airlines from London Heathrow Airport to Portland?

    Before booking your flight to Portland from London Heathrow Airport, check out the most reliable airlines to get you to your destination on time: American Airlines (78%), Alaska Airlines (78%), Aer Lingus( 78%).

  • What are the cheapest flights from London Heathrow Airport to Portland?

    Looking at all options, your cheapest flight can be booked for £586. While the most popular route (London Heathrow - Portland) can be booked for £555 on average, our data indicates £1,071 when flying from London Heathrow Airport to Portland.

  • Can I find deals for flights from Heathrow to Portland that include hotel bookings?

    Yes. In addition to deals on Heathrow to Portland flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from Heathrow to Portland?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Heathrow to Portland.

  • Can I find deals for business class flights from Heathrow to Portland?

    Yes. Cheapflights offers flight deals from Heathrow to Portland by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from London Heathrow Airport to Portland?

    Currently, February is the cheapest month in which you can book a flight from London Heathrow Airport to Portland (average of £458). Flying from London Heathrow Airport to Portland in January is currently the most expensive (average of £563). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

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Top 10 airlines flying from Heathrow to Portland

Discover the top 10 airlines that operate flights from Heathrow to Portland. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 30 March 2026.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest£429Average£606FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
LufthansaCheapest£499Average£608FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
Air CanadaCheapest£503Average£583FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
Virgin AtlanticCheapest£517Average£669FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
British AirwaysCheapest£519Average£697FlexibilityNo cancel feeOn-time70%
Search British Airways flights
United AirlinesCheapest£520Average£607FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
KLMCheapest£528Average£809FlexibilityNo cancel feeOn-time75%
Search KLM flights
FinnairCheapest£542Average£589FlexibilityNo cancel feeOn-time76%
Search Finnair flights
American AirlinesCheapest£547Average£767FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
IberiaCheapest£619Average£722FlexibilityNo cancel feeOn-time77%
Search Iberia flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Heathrow to Portland?

Cheapflights helps you search for flights from Heathrow to Portland via 900+ travel sites so you don’t have to. After performing a flight search, users can also filter their flight selection by filtering for price, number of stops, airlines, and so on.

Why should you use Cheapflights to find cheap flight tickets from Heathrow to Portland?

Cheapflights taps into our reliable network of hundreds of airlines and travel agencies to find the best deals for flights from Heathrow to Portland for you. Better yet — we are completely free to use.

Can Cheapflights find flights from Heathrow to Portland with no change fees?

Yes, we can. To see specific flights from Heathrow to Portland with no change fees, users can toggle flexible booking options after using the search form above to find flights.

Can Cheapflights notify me if prices for flights from Heathrow to Portland become cheaper?

Yes, Cheapflights has a feature called Price Alert, which notifies users when flight prices change. Track prices for your flight to Portland from Heathrow today and book when prices fit your budget.

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