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Heathrow

$518+ Cheap flights from Portland, ME (PWM) to Heathrow (LHR)

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 12/16. Fares are subject to change and may not be available on all flights or dates of travel.
PWM — LHR
Dec 8 — Dec 151
Sun 12/8
Sun 12/15
1 adult, Economy
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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 December 3, 2024.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Popular in

June

Cheapest in

January

Round-trip from

$521
(JetBlue)

One-way from

$518
(Delta)
Provider with most accurate pricing for Portland-London Heathrow flight deals.
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Provider most trusted by Cheapflights users for Portland-London Heathrow flights.
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High demand for flights, 32% potential price rise
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Best time to find cheap flights, 26% potential price drop
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From Portland to London Heathrow
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One-way flight from Portland to London Heathrow
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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 December 3, 2024.

This Delta deal was found by Cheapflights users on 12/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/306:05 amPWM - LHR
1 stop19h 15mDelta
Tue 1/146:30 amLHR - PWM
2 stops22h 27mDelta
Deal found 12/2$730
This Virgin Atlantic deal was found by Cheapflights users on 12/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Virgin Atlantic is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/306:05 amPWM - LHR
1 stop19h 15mVirgin Atlantic
Tue 1/142:30 pmLHR - PWM
1 stop14h 21mVirgin Atlantic
Deal found 12/2$744
This Booking.com deal was found by Cheapflights users on 12/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/306:00 amPWM - LHR
2 stops33h 35mAir Canada
Tue 1/143:00 pmLHR - PWM
2 stops36h 30mAir Canada
Deal found 12/2$825
This United Airlines deal was found by Cheapflights users on 12/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/247:16 pmPWM - LHR
1 stop10h 34mUnited Airlines
Tue 12/3112:05 pmLHR - PWM
2 stops16h 15mUnited Airlines
Deal found 12/2$1,174
This United Airlines deal was found by Cheapflights users on 12/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/247:16 pmPWM - LHR
1 stop10h 34mMultiple Airlines
Fri 1/37:10 amLHR - PWM
2 stops16h 14mMultiple Airlines
Deal found 12/2$1,561
This Scandinavian Airlines deal was found by Cheapflights users on 12/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/3012:15 pmPWM - LHR
3 stops28h 20mScandinavian Airlines
Tue 1/146:40 amLHR - PWM
2 stops22h 17mScandinavian Airlines
Deal found 12/2$2,064
This Austrian Airlines deal was found by Cheapflights users on 12/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Austrian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/2311:12 amPWM - LHR
1 stop28h 23mAustrian Airlines
Wed 1/18:00 amLHR - PWM
1 stop15h 24mAustrian Airlines
Deal found 12/2$2,294
This KLM deal was found by Cheapflights users on 12/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/256:05 amPWM - LHR
1 stop20h 50mKLM
Fri 1/311:45 amLHR - PWM
2 stops16h 37mKLM
Deal found 12/2$2,628
This Air France deal was found by Cheapflights users on 12/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/2312:57 pmPWM - LHR
1 stop12h 53mAir France
Sat 1/411:30 amLHR - PWM
2 stops16h 52mAir France
Deal found 12/2$2,838

Find flights from Portland to Heathrow within your budget

Customize 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 2,700,776 searches. Data last updated December 3, 2024.

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Route

Depart

Return

Price

PortlandLondon

PWM - LHR

PWMLHR

Portland

Fri 4/4

5:30 pm-9:30 am

1 stop11h 00m

London Heathrow

Thu 4/10

7:25 am-4:35 pm

1 stop14h 10m

$521

PortlandLondon

PWM - LHR

PWMLHR

Portland

Mon 1/27

12:06 pm-12:40 pm

1 stop19h 34m

London Heathrow

Sun 2/2

2:35 pm-11:26 am

2 stops25h 51m

$679

PortlandLondon

PWM - LHR

PWMLHR

Portland

Mon 12/30

6:05 am-6:20 am

1 stop19h 15m

London Heathrow

Tue 1/14

6:30 am-11:57 pm

2 stops22h 27m

$730

PortlandLondon

PWM - LHR

PWMLHR

Portland

Wed 3/12

2:35 pm-9:20 am

2 stops14h 45m

London Heathrow

Mon 3/17

6:40 pm-12:06 am

2 stops33h 26m

$734

PortlandLondon

PWM - LHR

PWMLHR

Portland

Mon 12/30

6:05 am-6:20 am

1 stop19h 15m

London Heathrow

Tue 1/14

2:30 pm-11:51 pm

1 stop14h 21m

$744

PortlandLondon

PWM - LHR

PWMLHR

Portland

Tue 1/14

3:02 pm-7:55 am

1 stop11h 53m

London Heathrow

Tue 1/21

2:30 pm-11:51 pm

1 stop14h 21m

$754

PortlandLondon

PWM - LHR

PWMLHR

Portland

Mon 1/27

6:05 pm-7:10 am

2 stops32h 05m

London Heathrow

Sun 2/2

11:10 am-4:52 pm

2 stops34h 42m

$768

PortlandLondon

PWM - LHR

PWMLHR

Portland

Wed 3/12

4:11 pm-6:35 am

1 stop10h 24m

London Heathrow

Mon 3/17

9:50 am-10:42 pm

2 stops16h 52m

$771

PortlandLondon

PWM - LHR

PWMLHR

Portland

Fri 1/17

6:35 pm-11:05 am

1 stop11h 30m

London Heathrow

Fri 1/24

3:00 pm-2:42 pm

2 stops28h 42m

$803

PortlandLondon

PWM - LHR

PWMLHR

Portland

Mon 1/27

5:44 am-9:20 am

1 stop22h 36m

London Heathrow

Fri 1/31

8:15 am-10:28 pm

2 stops19h 13m

$928

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/2

Showing 1-10 of 17 results
1
2

Compare providers for flights from Portland to Heathrow

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Portland to Heathrow in December.
ProviderPrice AccuracyTrust Score*
FlightHubPrice Accuracy3 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice Accuracy3 starsTrust Score*2 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Portland, Maine-London Heathrow Airport flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Portland, Maine-London Heathrow Airport flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Portland, Maine-London Heathrow Airport flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Portland, Maine-London Heathrow Airport flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Portland, Maine-London Heathrow Airport flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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 round-trip 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, November is the cheapest month in which you can book a flight from Portland, Maine to London Heathrow Airport (average of $661). Flying from Portland, Maine to London Heathrow Airport in June is currently the most expensive (average of $1,088). 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 PWM 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 December 3, 2024.

It’s typically best to fly out from Portland, Maine to London Heathrow Airport in the afternoon. Doing so could potentially save you 17% on the flight price compared to flying in the morning, which is usually more expensive.

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 1.6 - 2.8 inches per month. January is typically the wettest month, when rainfall can reach 2.8 in. July is typically the driest time to visit London Heathrow Airport when rainfall is around 1.6 in.

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 62.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 39.2 F).

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 December 3, 2024.
Delta
8.0
Very good
8,694 reviews

Crew

8.6

Food

7.3

Overall

8.0

Entertainment

7.9

Boarding

8.2

Comfort

7.9

Reviews

1 / 10

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Delta
8.0
Very good
8,694 reviews
Delta
8.0
Very good
8,694 reviews

Crew

8.6

Food

7.3

Overall

8.0

Entertainment

7.9

Boarding

8.2

Comfort

7.9

Reviews

1 / 10

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

KLM
7.8
Good
1,340 reviews
Delta
8.0
Very good
8,694 reviews

Crew

8.6

Food

7.3

Overall

8.0

Entertainment

7.9

Boarding

8.2

Comfort

7.9

Reviews

1 / 10

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Finnair
7.7
Good
1,297 reviews
Delta
8.0
Very good
8,694 reviews

Crew

8.6

Food

7.3

Overall

8.0

Entertainment

7.9

Boarding

8.2

Comfort

7.9

Reviews

1 / 10

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Virgin Atlantic
7.6
Good
665 reviews
Delta
8.0
Very good
8,694 reviews

Crew

8.6

Food

7.3

Overall

8.0

Entertainment

7.9

Boarding

8.2

Comfort

7.9

Reviews

1 / 10

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Austrian Airlines
7.6
Good
799 reviews
Delta
8.0
Very good
8,694 reviews

Crew

8.6

Food

7.3

Overall

8.0

Entertainment

7.9

Boarding

8.2

Comfort

7.9

Reviews

1 / 10

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

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 (PWM) is the airport you will fly out of if you book a flight from Portland to London Heathrow. You should not have trouble finding flights to London Heathrow from Portland; the airport handles an average of 0 outbound flights to London Heathrow per day. You should also have plenty of airline options to choose from since 4 airlines have flights from the Portland airport to London Heathrow. It is only a 2.9 mi journey to Portland (PWM) from Portland’s city center.

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

    JetBlue, at $521, was found to be the cheapest airline from Portland, Maine to London Heathrow Airport.Alternate airlines to your destination round-trip include Delta and Scandinavian Airlines. These flights start at 45% lower than the current average price 3 months from now.

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

    The cheapest airline one-way is Delta, with whom users have recently found tickets for as low as $518. However, be on the lookout for offers from Air Canada and United Airlines, as they are both options that can get you from Portland, Maine to London Heathrow Airport for a low price.

  • 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 vacation 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, November is the cheapest month in which you can book a flight from Portland, Maine to London Heathrow Airport (average of $661). Flying from Portland, Maine to London Heathrow Airport in June is currently the most expensive (average of $1,088). 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.

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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 2,700,776 searches. Data last updated December 3, 2024.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$602Average$1,167FlexibilityNo cancel feeOn-time71%
DeltaCheapest$650Average$920FlexibilityNo cancel feeOn-timeN/A
JetBlueCheapest$670Average$750FlexibilityNo cancel feeOn-time62%
United AirlinesCheapest$715Average$926FlexibilityNo cancel feeOn-time69%
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