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Cheap flights from Portland to London Heathrow Airport from £245

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 15/4. Fares are subject to change and may not be available on all flights or dates of travel.
PWM — LHR
27 Oct — 3 Nov1
1 adult

Cheap flight deals from Portland to Heathrow

Discover tips and strategies to find the most affordable flight options for your journey from Portland (PWM) 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 22 October 2024.

Round-trip from

£497

One-way from

£245

Popular in

June

Cheapest in

January
Scandinavian Airlines
  • Scandinavian Airlines
  • 26/3-31/3
  • 4 total stops
  • 47h 46m total
  • Portland to London
Search Deals
JetBlue
  • JetBlue
  • 15/4
  • 1 total stop
  • 11h 00m total
  • Portland to London
Search Deals
High demand for flights, 33% potential price rise
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Best time to find cheap flights, 25% potential price drop
Search Deals

Find flight deals from Portland to Heathrow

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 22 October 2024.

Tue 3/1212:51PWM - LHR
1 stop12h 59mKLM
Tue 17/1216:35LHR - PWM
1 stop12h 24mKLM
Deal found 22/10£559
Tue 3/1214:59PWM - LHR
1 stop11h 16mDelta
Tue 17/1210:00LHR - PWM
2 stops18h 59mDelta
Deal found 22/10£565
Tue 3/1214:59PWM - LHR
2 stops13h 21mScandinavian Airlines
Tue 17/1206:40LHR - PWM
2 stops22h 19mScandinavian Airlines
Deal found 22/10£566
Wed 6/1114:50PWM - LHR
2 stops25h 50mMultiple Airlines
Thu 14/1106:40LHR - PWM
2 stops22h 19mMultiple Airlines
Deal found 21/10£668
Wed 6/1106:10PWM - LHR
1 stop19h 10mVirgin Atlantic
Thu 14/1110:50LHR - PWM
1 stop17h 57mVirgin Atlantic
Deal found 21/10£698
Wed 6/1111:24PWM - LHR
3 stops19h 26mAir Canada
Thu 14/1109:00LHR - PWM
3 stops18h 50mAir Canada
Deal found 21/10£856

Find flights from Portland to Heathrow within your budget

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 1,032,068 searches. Data last updated 22 October 2024.

Fly from

Any airport

Fly to

Any airport

Budget

£497 - £846

Route

Depart

Return

Price

PortlandLondon Heathrow

PWM - LHR

PWMLHR

Portland

Wed 26/3

2 stops14h 45m

London Heathrow

Mon 31/3

2 stops33h 01m

£497

PortlandLondon Heathrow

PWM - LHR

PWMLHR

Portland

Sat 22/2

1 stop24h 35m

London Heathrow

Tue 4/3

2 stops22h 01m

£561

PortlandLondon Heathrow

PWM - LHR

PWMLHR

Portland

Sat 22/2

2 stops13h 12m

London Heathrow

Tue 4/3

2 stops17h 30m

£584

PortlandLondon Heathrow

PWM - LHR

PWMLHR

Portland

Wed 6/11

2 stops25h 50m

London Heathrow

Thu 14/11

2 stops22h 19m

£668

PortlandLondon Heathrow

PWM - LHR

PWMLHR

Portland

Sat 12/4

1 stop11h 00m

London Heathrow

Sat 19/4

1 stop14h 10m

£678

PortlandLondon Heathrow

PWM - LHR

PWMLHR

Portland

Wed 6/11

1 stop19h 10m

London Heathrow

Thu 14/11

1 stop17h 57m

£698

PortlandLondon Heathrow

PWM - LHR

PWMLHR

Portland

Sat 12/4

3 stops16h 13m

London Heathrow

Sat 19/4

3 stops19h 28m

£712

PortlandLondon Heathrow

PWM - LHR

PWMLHR

Portland

Thu 7/11

1 stop20h 45m

London Heathrow

Tue 12/11

1 stop14h 17m

£844

PortlandLondon Heathrow

PWM - LHR

PWMLHR

Portland

Fri 8/11

1 stop11h 12m

London Heathrow

Mon 11/11

2 stops34h 44m

£846

Flights are sorted by cheapest first

Deals found on 20/10

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.

Travel insights for flights from Portland to Heathrow

Get recent, data-driven insights about flights from Portland to Heathrow including ideal travel times, pricing trends, and more.

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

Currently, January is the cheapest month in which you can book a flight from Portland, Maine to London Heathrow Airport (average of £112). Flying from Portland, Maine to London Heathrow Airport in July is currently the most expensive (average of £159). 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.

Rainfall in Heathrow by month

Plan your trip to Heathrow by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in London Heathrow Airport ranges from 40.0 - 70.0 inches per month. January is typically the wettest month, when rainfall can reach 70.0 mm. July is typically the driest time to visit London Heathrow Airport when rainfall is around 40.0 mm.

Temperature in Heathrow by month

Plan your trip to Heathrow by taking into account the average temperature totals by month.

If weather is an important factor for your trip to London Heathrow Airport, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 17.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 4.0 C).

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 22 October 2024.
Delta
8.0
Very Good
8,884 reviews
Check prices

Food

7.3

Boarding

8.2

Crew

8.6

Entertainment

7.9

Comfort

7.9

Overall

8.0

Reviews

1 / 10

Overall it was good on the flight. Before the flight with checking the bag at JFK was a nightmare. It took way too long and the Delta concierge was very rude to everyone. But other than that it was fine.

Delta
8.0
Very Good
8,884 reviews
Delta
8.0
Very Good
8,884 reviews
Check prices

Food

7.3

Boarding

8.2

Crew

8.6

Entertainment

7.9

Comfort

7.9

Overall

8.0

Reviews

1 / 10

Overall it was good on the flight. Before the flight with checking the bag at JFK was a nightmare. It took way too long and the Delta concierge was very rude to everyone. But other than that it was fine.

KLM
7.8
Good
1,354 reviews
Delta
8.0
Very Good
8,884 reviews
Check prices

Food

7.3

Boarding

8.2

Crew

8.6

Entertainment

7.9

Comfort

7.9

Overall

8.0

Reviews

1 / 10

Overall it was good on the flight. Before the flight with checking the bag at JFK was a nightmare. It took way too long and the Delta concierge was very rude to everyone. But other than that it was fine.

Virgin Atlantic
7.6
Good
667 reviews
Delta
8.0
Very Good
8,884 reviews
Check prices

Food

7.3

Boarding

8.2

Crew

8.6

Entertainment

7.9

Comfort

7.9

Overall

8.0

Reviews

1 / 10

Overall it was good on the flight. Before the flight with checking the bag at JFK was a nightmare. It took way too long and the Delta concierge was very rude to everyone. But other than that it was fine.

JetBlue
7.5
Good
3,552 reviews
Delta
8.0
Very Good
8,884 reviews
Check prices

Food

7.3

Boarding

8.2

Crew

8.6

Entertainment

7.9

Comfort

7.9

Overall

8.0

Reviews

1 / 10

Overall it was good on the flight. Before the flight with checking the bag at JFK was a nightmare. It took way too long and the Delta concierge was very rude to everyone. But other than that it was fine.

United Airlines
7.4
Good
9,285 reviews
Delta
8.0
Very Good
8,884 reviews
Check prices

Food

7.3

Boarding

8.2

Crew

8.6

Entertainment

7.9

Comfort

7.9

Overall

8.0

Reviews

1 / 10

Overall it was good on the flight. Before the flight with checking the bag at JFK was a nightmare. It took way too long and the Delta concierge was very rude to everyone. But other than that it was fine.

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?

    For a flight from Portland to London Heathrow, you will be flying from Portland. Portland (PWM) is just 2.9 mi from the center of the city. Portland is the only Portland airport and it handles 0 outbound flights to London Heathrow per day. 0 airlines have flights to London Heathrow from Portland on a regular basis.

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

    Flying on Scandinavian Airlines is currently your cheapest option to London Heathrow Airport, with prices starting at £497. Additional return tickets that might be worth considering are offered by Delta and American Airlines, with the lowest prices starting at £561 and £584, respectively. Users have found that Scandinavian Airlines is 31% cheaper than the other options available to this destination.

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

    £245 is the cheapest one-way deal found within the past few days, from JetBlue. You may also be able to find cheap deals on American Airlines and Air Canada, with prices starting from £320 and £324, respectively.

  • 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, Maine to London Heathrow Airport?

    Currently, January is the cheapest month in which you can book a flight from Portland, Maine to London Heathrow Airport (average of £112). Flying from Portland, Maine to London Heathrow Airport in July is currently the most expensive (average of £159). 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

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Alternative routes for Portland to Heathrow
See prices for flight routes from nearby airports that may be better suited for you.

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