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Cheap flights from Portland to London Heathrow Airport from £192

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 11/3. Fares are subject to change and may not be available on all flights or dates of travel.
PDX — LHR
14 Dec — 21 Dec1
1 adult
1 adult, Economy, 0 bags

Cheapflights Tip: The best prices from Portland to London Heathrow are usually found in October or April, booked 86 days in advance, depart on a Friday or Wednesday and return on a Wednesday

Cheap flight deals from Portland to Heathrow

Discover tips and strategies to find the most affordable flight options for your journey from Portland (PDX) to Heathrow (LHR). 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 14 November 2025.

Round-trip from

£426

One-way from

£214

Popular in

June

Cheapest in

October

Average price

£546

Good round-trip deal

£1,388 or less

Good one-way deal

£3,236 or less
Icelandair
  • Icelandair
  • 9/3-13/3
  • 2 total stops
  • 24h 50m total
  • Portland to London
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5/12
  • 5/12
  • 3 total stops
  • 37h 55m total
  • Portland to London
Search Deals
Highest demand for flights based on searches. 24% potential increase in price (£154 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease (£27 potential savings vs. average return price).
Search Deals
Average for round-trip flights in November 2025
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Price to beat on a round-trip flight from Portland to London Heathrow.
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Price to beat on a one-way flight from Portland to London Heathrow.
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Find flight deals from Portland to Heathrow

Enter your travel dates to find the best prices.

Cheapest flights from Portland to Heathrow
Explore the most affordable flight options available from Portland to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 14 November 2025.

Mon 24/1113:45PDX - LHR
1 stop12h 15mKLM
Wed 3/1206:30LHR - PDX
1 stop12h 55mKLM
Deal found 12/11£438
Wed 3/1213:45PDX - LHR
1 stop12h 15mKLM
Wed 10/1206:30LHR - PDX
1 stop12h 55mKLM
Deal found 12/11£442
Sun 23/1105:30PDX - LHR
2 stops18h 20mDelta
Wed 3/1206:30LHR - PDX
1 stop12h 55mDelta
Deal found 12/11£445
Wed 3/1217:45PDX - LHR
Nonstop9h 35mBritish Airways
Wed 10/1211:55LHR - PDX
1 stop17h 29mBritish Airways
Deal found 11/11£445
Wed 3/1214:23PDX - LHR
1 stop12h 07mDelta
Wed 10/1206:20LHR - PDX
2 stops19h 23mDelta
Deal found 13/11£448
Wed 3/1214:07PDX - LHR
1 stop13h 33mBritish Airways
Tue 9/1211:55LHR - PDX
1 stop17h 29mBritish Airways
Deal found 11/11£449
Mon 1/1217:45PDX - LHR
Nonstop9h 35mAmerican Airlines
Fri 12/1211:55LHR - PDX
1 stop17h 29mAmerican Airlines
Deal found 13/11£450
Mon 24/1117:45PDX - LHR
Nonstop9h 35mAmerican Airlines
Wed 3/1208:20LHR - PDX
1 stop18h 50mAmerican Airlines
Deal found 12/11£451
Mon 1/1214:45PDX - LHR
2 stops21h 05mMultiple Airlines
Fri 12/1207:50LHR - PDX
2 stops17h 10mMultiple Airlines
Deal found 13/11£453
Sun 30/1100:35PDX - LHR
1 stop22h 30mDelta
Fri 12/1212:20LHR - PDX
1 stop19h 55mDelta
Deal found 13/11£454
Mon 24/1109:50PDX - LHR
2 stops16h 20mLufthansa
Wed 3/1206:35LHR - PDX
2 stops22h 40mLufthansa
Deal found 12/11£455

Cheapflights Fare Finder

 
Customise your flight search to find flights from Portland to Heathrow 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 14 November 2025.
Use the filters below to find and compare flights from Portland to London Heathrow Airport that are best for you.

Fly from

Portland

Fly to

Heathrow

Route

Depart

Return

Price

PortlandLondon

PDX - LHR

PDXLHR

Portland

Wed 26/11

13:45-10:00

1 stop12h 15m

London Heathrow

Wed 3/12

06:30-11:25

1 stop12h 55m

£442

PortlandLondon

PDX - LHR

PDXLHR

Portland

Wed 3/12

10:05-10:00

1 stop15h 55m

London Heathrow

Wed 10/12

11:30-22:10

2 stops18h 40m

£448

PortlandLondon

PDX - LHR

PDXLHR

Portland

Wed 14/1

14:36-17:40

2 stops19h 04m

London Heathrow

Thu 29/1

10:20-22:24

2 stops20h 04m

£448

PortlandLondon

PDX - LHR

PDXLHR

Portland

Wed 4/2

10:00-08:45

2 stops14h 45m

London Heathrow

Wed 11/2

06:30-11:25

1 stop12h 55m

£451

PortlandLondon

PDX - LHR

PDXLHR

Portland

Tue 13/1

10:00-09:00

2 stops15h 00m

London Heathrow

Tue 27/1

20:25-11:25

1 stop23h 00m

£451

PortlandLondon

PDX - LHR

PDXLHR

Portland

Mon 16/3

10:00-17:40

2 stops24h 40m

London Heathrow

Thu 23/4

06:40-22:22

2 stops23h 42m

£467

PortlandLondon

PDX - LHR

PDXLHR

Portland

Thu 23/4

13:00-17:40

2 stops20h 40m

London Heathrow

Wed 29/4

06:40-22:22

2 stops23h 42m

£467

PortlandLondon

PDX - LHR

PDXLHR

Portland

Wed 22/4

07:00-09:35

2 stops18h 35m

London Heathrow

Sat 9/5

06:40-22:22

2 stops23h 42m

£478

PortlandLondon

PDX - LHR

PDXLHR

Portland

Sat 18/4

21:45-06:30

1 stop24h 45m

London Heathrow

Tue 28/4

06:30-11:20

1 stop12h 50m

£480

PortlandLondon

PDX - LHR

PDXLHR

Portland

Mon 9/2

00:40-07:05

1 stop22h 25m

London Heathrow

Sun 15/2

06:30-11:25

1 stop12h 55m

£486

Flights are sorted by cheapest return flights first.

Deals found on 14/11

Showing 1-10 of 20 results
1
2

Best time to book a flight from Portland to Heathrow

Have a flexible travel schedule? Discover the best time to fly to Heathrow from Portland 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 Portland to London Heathrow Airport

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

Use this chart to determine the optimal time to book a return flight from Portland to Heathrow. Price data was last updated on 7 November 2025.

The best time to book flights from Portland to London Heathrow Airport is 86 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

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

Currently, October is the cheapest month in which you can book a flight from Portland to London Heathrow Airport (average of £399). Flying from Portland to London Heathrow Airport in June is currently the most expensive (average of £615). 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 PDX to LHR?

Find hourly flight availability from Portland to Heathrow. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 14 November 2025.

One of the essential ways to save on airfare from Portland to London Heathrow Airport is to remain as flexible as possible. Flights that are at midday tend to be the most expensive. A flight in the evening could potentially save you up to 27% on airfare.

Reviews of airlines servicing Heathrow

Get insights into the airlines that provide service to Heathrow. 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 Heathrow. Reviews last updated 14 November 2025.
Get a feel of what it's like to fly with Virgin Atlantic, Icelandair, andIberia from Portland to London Heathrow Airport by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Virgin Atlantic
7.5
Good
673 reviews
Check prices

Crew

8.1

Entertainment

7.5

Boarding

7.7

Comfort

7.3

Overall

7.5

Food

6.9

Reviews

1 / 20
6.0
Good

Pratap,Aug 2025

JFK - LHR

The flight is clean, food good and the staff are excellent! Very professional, polite and accommodating. The seat itself is really mediocre. Can’t believe there is not inch of storage space. Believe it or not it there is not place even to put away your phone or pen!! Very very surprising and terribly inconvenient. No coat hanger hook either. Had to give it away. ALL IN ALL VERY INCONVENIENT business class seat compared to their peers. What is even more surprising is that this on their relatively new fleet of Airbus A350-1000. I was having com platelets different expectations of Virgin and this has disappointed me. Everything else is just as good and as you would expect from Virgin!
Virgin Atlantic
7.5
Good
673 reviews
Virgin Atlantic
7.5
Good
673 reviews
Check prices

Crew

8.1

Entertainment

7.5

Boarding

7.7

Comfort

7.3

Overall

7.5

Food

6.9

Reviews

1 / 20
6.0
Good

Pratap,Aug 2025

JFK - LHR

The flight is clean, food good and the staff are excellent! Very professional, polite and accommodating. The seat itself is really mediocre. Can’t believe there is not inch of storage space. Believe it or not it there is not place even to put away your phone or pen!! Very very surprising and terribly inconvenient. No coat hanger hook either. Had to give it away. ALL IN ALL VERY INCONVENIENT business class seat compared to their peers. What is even more surprising is that this on their relatively new fleet of Airbus A350-1000. I was having com platelets different expectations of Virgin and this has disappointed me. Everything else is just as good and as you would expect from Virgin!
Icelandair
7.1
Good
578 reviews
Virgin Atlantic
7.5
Good
673 reviews
Check prices

Crew

8.1

Entertainment

7.5

Boarding

7.7

Comfort

7.3

Overall

7.5

Food

6.9

Reviews

1 / 20
6.0
Good

Pratap,Aug 2025

JFK - LHR

The flight is clean, food good and the staff are excellent! Very professional, polite and accommodating. The seat itself is really mediocre. Can’t believe there is not inch of storage space. Believe it or not it there is not place even to put away your phone or pen!! Very very surprising and terribly inconvenient. No coat hanger hook either. Had to give it away. ALL IN ALL VERY INCONVENIENT business class seat compared to their peers. What is even more surprising is that this on their relatively new fleet of Airbus A350-1000. I was having com platelets different expectations of Virgin and this has disappointed me. Everything else is just as good and as you would expect from Virgin!
Iberia
7.0
Good
3,012 reviews
Virgin Atlantic
7.5
Good
673 reviews
Check prices

Crew

8.1

Entertainment

7.5

Boarding

7.7

Comfort

7.3

Overall

7.5

Food

6.9

Reviews

1 / 20
6.0
Good

Pratap,Aug 2025

JFK - LHR

The flight is clean, food good and the staff are excellent! Very professional, polite and accommodating. The seat itself is really mediocre. Can’t believe there is not inch of storage space. Believe it or not it there is not place even to put away your phone or pen!! Very very surprising and terribly inconvenient. No coat hanger hook either. Had to give it away. ALL IN ALL VERY INCONVENIENT business class seat compared to their peers. What is even more surprising is that this on their relatively new fleet of Airbus A350-1000. I was having com platelets different expectations of Virgin and this has disappointed me. Everything else is just as good and as you would expect from Virgin!
British Airways
6.7
Okay
7,520 reviews
Virgin Atlantic
7.5
Good
673 reviews
Check prices

Crew

8.1

Entertainment

7.5

Boarding

7.7

Comfort

7.3

Overall

7.5

Food

6.9

Reviews

1 / 20
6.0
Good

Pratap,Aug 2025

JFK - LHR

The flight is clean, food good and the staff are excellent! Very professional, polite and accommodating. The seat itself is really mediocre. Can’t believe there is not inch of storage space. Believe it or not it there is not place even to put away your phone or pen!! Very very surprising and terribly inconvenient. No coat hanger hook either. Had to give it away. ALL IN ALL VERY INCONVENIENT business class seat compared to their peers. What is even more surprising is that this on their relatively new fleet of Airbus A350-1000. I was having com platelets different expectations of Virgin and this has disappointed me. Everything else is just as good and as you would expect from Virgin!

Related info for your journey

Find useful and relevant information for your journey from Portland to Heathrow. 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 from for flights from Portland to London Heathrow?

    Portland (PDX), located 6.0 mi from the city center, is the airport you fly out of when you book flights from Portland to London Heathrow. 4 airlines have flights from Portland to London Heathrow on a regular basis. Booking flights from Portland to London Heathrow should not be difficult; the airport handles an average of 2 outbound flights to London Heathrow per day.

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

    For as low as £442, KLM can have you in London Heathrow Airport from Portland in 12h 15m. The distance between Portland and London Heathrow Airport is about 4896 mi. This flight may include one or multiple stops.

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

    According to our current data, British Airways (£391), Icelandair (£448), and Iberia (£463) offers the cheapest pricing from Portland to London Heathrow Airport. These flights start at 38% lower than the current average price 3 months from now.

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

    Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from Portland to London Heathrow Airport on time: American Airlines (76%), Alaska Airlines (76%), Finnair (76%).

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

    On average you can expect to pay £2,321 for a flight from Portland to London Heathrow Airport. The cheapest flight overall is £1,388 while the most popular route, (Portland - London Heathrow) is currently priced at £370.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Portland to Heathrow 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 Portland to London Heathrow Airport?

    Currently, October is the cheapest month in which you can book a flight from Portland to London Heathrow Airport (average of £399). Flying from Portland to London Heathrow Airport in June is currently the most expensive (average of £615). 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

Travelling to a place near London Heathrow Airport?

Book flights to London Heathrow Airport if you plan to visit one of these locations
Milton Keynes
Croydon
Slough
Gatwick
Hounslow
Northampton
Luton
Ilford
Wembley
Deal
Hayes
Colchester
Watford
Winchester
Swindon
Crawley
Brentford
Romford
Chichester
Ipswich

Browse thousands of different options on Cheapflights for your next trip

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Top 4 airlines flying from Portland to Heathrow

Discover the top 4 airlines that operate flights from Portland to Heathrow. 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 14 November 2025.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest£391Average£549FlexibilityNo cancel feeOn-time70%
Search British Airways flights
IcelandairCheapest£448Average£457FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
IberiaCheapest£463Average£528FlexibilityNo cancel feeOn-time77%
Search Iberia flights
Virgin AtlanticCheapest£501Average£633FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic 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 Portland to Heathrow?

Cheapflights goes through 900+ travel sites to look for the best flight deals for flights from Portland to Heathrow. Too many options? Cheapflights also provides filters for things like airlines, price ranges, and number of stops to help you make a decision easily.

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

By finding flights from multiple airlines and providers at completely no cost, Cheapflights helps millions of users like you annually find the best flights to Heathrow from Portland.

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

Users can book flights with no change fees policies with our dedicated filters. Book flights from Portland to Heathrow flexibly with Cheapflights today.

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

Yes, and it’s super simple to set up. Click the bell icon next to the flight deals above and provide a valid email address to enable Price Alerts. That’s it!

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