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

Flying on JetBlue is currently your cheapest option to London Heathrow Airport, with prices starting at £481. Additional return tickets that might be worth considering are offered by Air Canada and United Airlines, with the lowest prices starting at £664 and £668, respectively. Users have found that JetBlue is 36% cheaper than the other options available to this destination.

What is the cheapest month to fly from Portland, Maine to London Heathrow Airport?

Flights from Portland, Maine to London Heathrow Airport lean towards being more expensive in July. Prices are generally better when you fly from Portland, Maine to London Heathrow Airport in February, with the cheapest ticket starting at £485.

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

When flying from Portland, Maine to London Heathrow Airport, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

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.

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.

£313+ Flights from Portland, Maine to London Heathrow Airport

Cheap flight deals from Portland to Heathrow

Round-trip from	£481
One-way from	£340
Popular in	June
Cheapest in	January

JetBlue
28/4-5/5
2 total stops
24h 30m total
Portland to London

Search Deals

Air Canada
7/3
2 total stops
47h 40m total
Portland to London

Search Deals

High demand for flights, 32% potential price rise

Search Deals

Best time to find cheap flights, 26% 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 23 November 2024.

Mon 23/1216:05PWM - LHR

2 stops47h 30mAir Canada

Mon 30/1215:00LHR - PWM

2 stops32h 24mAir Canada

Deal found 23/11£909

Fri 29/1112:01PWM - LHR

2 stops17h 49mMultiple Airlines

Fri 6/1212:25LHR - PWM

3 stops28h 52mMultiple Airlines

Deal found 23/11£1,180

Mon 23/1212:15PWM - LHR

2 stops17h 30mDelta

Mon 30/1220:05LHR - PWM

1 stop20h 14mDelta

Deal found 23/11£1,187

Fri 27/1205:20PWM - LHR

1 stop20h 20mUnited Airlines

Wed 1/114:30LHR - PWM

2 stops24h 58mUnited Airlines

Deal found 23/11£1,198

Fri 29/1106:00PWM - LHR

1 stop20h 55mKLM

Fri 6/1216:35LHR - PWM

1 stop12h 24mKLM

Deal found 23/11£1,292

Mon 23/1206:05PWM - LHR

1 stop19h 15mVirgin Atlantic

Mon 30/1214:30LHR - PWM

1 stop14h 40mVirgin Atlantic

Deal found 23/11£1,308

Best flights from Portland to Heathrow
Discover carefully curated flight deals from Portland to Heathrow that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 23 November 2024.

Mon 28/417:30PWM - LHR

1 stop11h 00mJetBlue

Mon 5/508:25LHR - PWM

1 stop13h 30mJetBlue

Deal found 23/11£481

Mon 28/406:00PWM - LHR

2 stops22h 35mMultiple Airlines

Mon 5/519:30LHR - PWM

2 stops32h 48mMultiple Airlines

Deal found 23/11£629

Fri 21/206:01PWM - LHR

2 stops20h 09mAir Canada

Fri 28/215:00LHR - PWM

2 stops37h 15mAir Canada

Deal found 22/11£664

Fri 21/212:15PWM - LHR

1 stop12h 40mUnited Airlines

Fri 28/212:05LHR - PWM

2 stops16h 10mUnited Airlines

Deal found 22/11£668

Fri 21/215:02PWM - LHR

1 stop11h 53mKLM

Fri 28/214:30LHR - PWM

1 stop14h 21mKLM

Deal found 22/11£682

Wed 1/116:15PWM - LHR

2 stops12h 55mAmerican Airlines

Fri 31/112:55LHR - PWM

2 stops16h 02mAmerican Airlines

Deal found 23/11£765

Thu 2/105:05PWM - LHR

1 stop20h 45mDelta

Tue 14/106:30LHR - PWM

2 stops22h 27mDelta

Deal found 22/11£886

Thu 1/514:35PWM - LHR

3 stops23h 15mScandinavian Airlines

Mon 5/507:05LHR - PWM

3 stops21h 33mScandinavian Airlines

Deal found 22/11£1,159

Fri 27/1206:05PWM - LHR

1 stop19h 15mVirgin Atlantic

Wed 1/110:50LHR - PWM

1 stop18h 20mVirgin Atlantic

Deal found 23/11£1,292

Thu 9/111:36PWM - LHR

1 stop15h 49mAustrian Airlines

Mon 20/110:00LHR - PWM

1 stop17h 30mAustrian Airlines

Deal found 22/11£3,769

Last-minute flights from Portland to Heathrow
Discover last-minute flight deals from Portland to Heathrow. Data last updated 23 November 2024 and is based on user searches.

Fri 29/1112:01PWM - LHR

2 stops17h 49mMultiple Airlines

Fri 6/1212:25LHR - PWM

3 stops28h 52mMultiple Airlines

Deal found 23/11£1,180

Fri 29/1113:31PWM - LHR

1 stop12h 09mUnited Airlines

Fri 6/1215:00LHR - PWM

2 stops28h 35mUnited Airlines

Deal found 23/11£1,275

Fri 29/1111:24PWM - LHR

2 stops19h 26mAir Canada

Fri 6/1215:00LHR - PWM

2 stops32h 46mAir Canada

Deal found 23/11£1,280

Fri 29/1106:00PWM - LHR

1 stop20h 55mKLM

Fri 6/1216:35LHR - PWM

1 stop12h 24mKLM

Deal found 23/11£1,292

Mon 23/1216:05PWM - LHR

2 stops47h 30mAir Canada

Mon 30/1215:00LHR - PWM

2 stops32h 24mAir Canada

Deal found 23/11£909

Mon 23/1212:15PWM - LHR

2 stops17h 30mDelta

Mon 30/1220:05LHR - PWM

1 stop20h 14mDelta

Deal found 23/11£1,187

Mon 23/1206:05PWM - LHR

1 stop19h 15mVirgin Atlantic

Mon 30/1214:30LHR - PWM

1 stop14h 40mVirgin Atlantic

Deal found 23/11£1,308

Fri 27/1205:20PWM - LHR

1 stop20h 20mUnited Airlines

Wed 1/114:30LHR - PWM

2 stops24h 58mUnited Airlines

Deal found 23/11£1,198

One-way flights from Portland to Heathrow
Search for one-way flight options from Portland to Heathrow. Find affordable one-way fares based on user searches. Data last updated 23 November 2024.

Fri 7/315:55PWM - LHR

2 stops47h 40mAir Canada

Deal found 23/11£340

Fri 7/318:18PWM - LHR

3 stops37h 32mMultiple Airlines

Deal found 23/11£365

Fri 7/315:02PWM - LHR

1 stop11h 53mKLM

Deal found 23/11£379

Find flights from Portland to Heathrow within your budget

Fly from

Fly to

Route

Depart

Return

Price

PortlandLondon

PWM - LHR

PWMLHR

Portland

Sun 27/4

17:30-09:30

1 stop11h 00m

London Heathrow

Sun 4/5

08:25-16:55

1 stop13h 30m

£452

PortlandLondon

PWM - LHR

PWMLHR

Portland

Wed 23/4

05:40-08:30

1 stop21h 50m

London Heathrow

Wed 30/4

10:25-23:14

2 stops17h 49m

£617

PortlandLondon

PWM - LHR

PWMLHR

Portland

Wed 23/4

06:00-06:30

2 stops19h 30m

London Heathrow

Wed 30/4

18:00-23:18

2 stops34h 18m

£622

PortlandLondon

PWM - LHR

PWMLHR

Portland

Mon 28/4

06:00-09:35

2 stops22h 35m

London Heathrow

Mon 5/5

19:30-23:18

2 stops32h 48m

£629

PortlandLondon

PWM - LHR

PWMLHR

Portland

Fri 17/1

18:05-11:15

2 stops36h 10m

London Heathrow

Mon 20/1

10:25-22:30

2 stops17h 05m

£659

PortlandLondon

PWM - LHR

PWMLHR

Portland

Wed 1/1

16:15-10:10

2 stops12h 55m

London Heathrow

Fri 31/1

12:55-23:57

2 stops16h 02m

£765

PortlandLondon

PWM - LHR

PWMLHR

Portland

Sun 27/4

10:32-05:55

1 stop14h 23m

London Heathrow

Sat 3/5

19:30-23:18

2 stops32h 48m

£791

PortlandLondon

PWM - LHR

PWMLHR

Portland

Wed 23/4

14:35-21:35

3 stops26h 00m

London Heathrow

Wed 30/4

07:05-23:38

2 stops21h 33m

£885

PortlandLondon

PWM - LHR

PWMLHR

Portland

Thu 2/1

12:15-08:45

1 stop15h 30m

London Heathrow

Tue 14/1

06:30-23:51

2 stops22h 21m

£886

PortlandLondon

PWM - LHR

PWMLHR

Portland

Wed 14/5

17:50-09:30

1 stop10h 40m

£313

Flights are sorted by cheapest return flights first.

Deals found on 23/11

Showing 1-10 of 14 results

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 £160). 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

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

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

See what other customers who have flown with Air Canada, United Airlines and KLM from Portland to London have to say. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

Delta

8.0

Very Good

8,742 reviews

Check prices

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

8,742 reviews

Delta

8.0

Very Good

8,742 reviews

Check prices

Reviews

1 / 10

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

KLM

7.8

Good

1,347 reviews

Delta

8.0

Very Good

8,742 reviews

Check prices

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

806 reviews

Delta

8.0

Very Good

8,742 reviews

Check prices

Reviews

1 / 10

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

Virgin Atlantic

7.5

Good

662 reviews

Delta

8.0

Very Good

8,742 reviews

Check prices

Reviews

1 / 10

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

JetBlue

7.5

Good

3,380 reviews

Delta

8.0

Very Good

8,742 reviews

Check prices

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

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 JetBlue is currently your cheapest option to London Heathrow Airport, with prices starting at £481. Additional return tickets that might be worth considering are offered by Air Canada and United Airlines, with the lowest prices starting at £664 and £668, respectively. Users have found that JetBlue is 36% cheaper than the other options available to this destination.
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 £160). 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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How does Cheapflights help users find flights from Portland to Heathrow?

Deals for Portland to Heathrow flights are sourced from 900+ travel sites when you use Cheapflights. When all flight results come back, Cheapflights lets you sort and filter flights using different criteria to choose better, like price, airport, cabin class, and plenty of other options.

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

It’s simple! Cheapflights, which is free to use for everyone, saves millions of users time and money every year by helping them find the cheapest and most suitable flights from Portland to Heathrow.

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

Yes! Cheapflights helps users easily find flights from Portland to Heathrow with no change fees.

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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Cheap flights from Portland, Maine to London Heathrow Airport from £313

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 14/5. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from Portland to Heathrow

Round-trip from

One-way from

Popular in

Cheapest in

Find flight deals from Portland to Heathrow

Cheapest flights from Portland to HeathrowExplore 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 23 November 2024.

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 23 November 2024.

Find flights from Portland to Heathrow within your budget

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.

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?

Rainfall in Heathrow by month

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

Temperature in Heathrow by month

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

Reviews of airlines servicing Heathrow

See what other customers who have flown with Air Canada, United Airlines and KLM from Portland to London have to say. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

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?

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

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

How can I find direct flights from Portland to Heathrow?

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

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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Portland to Heathrow

See prices for flight routes from nearby airports that may be better suited for you.

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?

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

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

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

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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 23 November 2024.