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

Travellers seeking maximum savings on their London Heathrow Airport to Portland, Maine flight should consider departing on Tuesday afternoons when fares are most often at their lowest. Friday at midday flights should be avoided if possible as fares are typically the most expensive at this time.

What are the most popular airlines that fly from London Heathrow Airport to Portland, Maine?

Finnair, JetBlue and Icelandair are the most popular airlines when flying from London Heathrow Airport to Portland, Maine.

What is the cheapest day to fly round-trip from London Heathrow Airport to Portland, Maine?

It’s generally more expensive to depart on a Wednesday, if you have to leave on this day you can still search on Cheapflights to find great options that meet your needs.

How far in advance should I book a flight from London Heathrow Airport to Portland, Maine?

To save on the cost of your flight from London Heathrow Airport to Portland, Maine, book at least 30 days before your planned departure. Booking around this time can save you about 88% on the cost of this flight compared to booking a flight leaving this week. We have found prices from £464 if you need a flight within two weeks. For flights within the next 72 hours, you can find tickets from as low as £888.

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

Due to multiple factors, expect to potentially pay more when booking in August. For low rates, February can be a great choice for travel to Portland, Maine. Flights to Portland, Maine from London Heathrow Airport in February are about £655 on average during February, but can be found for as low as £482.

What airport do you fly into for flights to Portland from London Heathrow?

Located just 2.9 mi from the city center, Portland is the airport most travelers will use when flying to Portland from London Heathrow. Booking flights from London Heathrow to Portland (PWM) should be relatively easy as there are 0 daily inbound flights from London Heathrow from 6 different airlines.

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.

£425+ Flights from London Heathrow Airport to Portland, Maine - Compare & Save Big

Cheap flight deals from Heathrow to Portland

Round-trip from	£490
One-way from	£425
Popular in	December
Cheapest in	February
Average price	£713

JetBlue
2/10-6/10
2 total stops
29h 19m total
London to Portland

Search Deals

5/6
3 total stops
42h 53m total
London to Portland

Search Deals

Highest demand for flights based on searches. 1% potential increase in price (£7 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 3% potential price decrease (£18 potential savings vs. average return price).

Search Deals

Average for round-trip flights in April 2025

Search Deals

Find flight deals from Heathrow to Portland

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 April 2025.

Thu 2/1011:55LHR - PWM

1 stop15h 04mJetBlue

Mon 6/1014:15PWM - LHR

1 stop14h 15mJetBlue

Deal found 28/4£490

Thu 2/1008:25LHR - PWM

2 stops18h 34mIcelandair

Mon 6/1007:30PWM - LHR

1 stop21h 00mIcelandair

Deal found 29/4£536

Fri 9/511:20LHR - PWM

1 stop17h 39mKLM

Thu 15/514:30PWM - LHR

1 stop13h 45mKLM

Deal found 29/4£567

Fri 9/511:45LHR - PWM

2 stops17h 29mDelta

Thu 15/514:30PWM - LHR

1 stop15h 55mDelta

Deal found 29/4£581

Thu 2/1006:30LHR - PWM

2 stops17h 07mUnited Airlines

Mon 6/1015:13PWM - LHR

2 stops14h 27mUnited Airlines

Deal found 28/4£647

Tue 27/507:05LHR - PWM

2 stops22h 09mScandinavian Airlines

Tue 3/614:30PWM - LHR

2 stops22h 10mScandinavian Airlines

Deal found 28/4£654

Thu 12/606:00LHR - PWM

3 stops22h 30mMultiple Airlines

Thu 19/617:35PWM - LHR

2 stops32h 00mMultiple Airlines

Deal found 28/4£688

Sun 1/609:35LHR - PWM

2 stops19h 24mVirgin Atlantic

Tue 10/612:55PWM - LHR

1 stop19h 35mVirgin Atlantic

Deal found 29/4£697

Fri 26/1212:00LHR - PWM

1 stop11h 13mAustrian Airlines

Sat 3/111:17PWM - LHR

1 stop18h 48mAustrian Airlines

Deal found 29/4£949

Thu 2/1008:30LHR - PWM

3 stops19h 31mAir Canada

Mon 6/1008:00PWM - LHR

3 stops17h 30mAir Canada

Deal found 28/4£955

Sun 6/722:25LHR - PWM

2 stops30h 12mTurkish Airlines

Sat 12/706:10PWM - LHR

2 stops22h 40mTurkish Airlines

Deal found 28/4£1,102

Best flights from Heathrow to Portland
Discover carefully curated flight deals from Heathrow to Portland that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 30 April 2025.

Thu 2/1011:55LHR - PWM

1 stop15h 04mJetBlue

Mon 6/1014:15PWM - LHR

1 stop14h 15mJetBlue

Deal found 28/4£490

Thu 2/1008:25LHR - PWM

2 stops18h 34mIcelandair

Mon 6/1007:30PWM - LHR

1 stop21h 00mIcelandair

Deal found 29/4£536

Fri 9/511:20LHR - PWM

1 stop17h 39mKLM

Thu 15/514:30PWM - LHR

1 stop13h 45mKLM

Deal found 29/4£567

Fri 9/511:45LHR - PWM

2 stops17h 29mDelta

Thu 15/514:30PWM - LHR

1 stop15h 55mDelta

Deal found 29/4£581

Thu 2/1009:30LHR - PWM

2 stops14h 07mUnited Airlines

Mon 6/1014:22PWM - LHR

1 stop11h 33mUnited Airlines

Deal found 28/4£647

Tue 27/507:05LHR - PWM

2 stops22h 09mScandinavian Airlines

Tue 3/614:30PWM - LHR

2 stops22h 10mScandinavian Airlines

Deal found 28/4£654

Thu 12/606:00LHR - PWM

3 stops22h 30mMultiple Airlines

Thu 19/617:35PWM - LHR

2 stops32h 00mMultiple Airlines

Deal found 28/4£688

Sun 1/609:35LHR - PWM

2 stops19h 24mVirgin Atlantic

Tue 10/612:55PWM - LHR

1 stop19h 35mVirgin Atlantic

Deal found 29/4£697

Thu 2/1008:30LHR - PWM

3 stops19h 31mAir Canada

Mon 6/1008:00PWM - LHR

3 stops17h 30mAir Canada

Deal found 28/4£955

Sun 6/722:25LHR - PWM

2 stops30h 12mTurkish Airlines

Sat 12/706:10PWM - LHR

2 stops22h 40mTurkish Airlines

Deal found 28/4£1,102

Last-minute flights from Heathrow to Portland
Discover last-minute flight deals from Heathrow to Portland. Data last updated 30 April 2025 and is based on user searches.

Thu 8/508:15LHR - PWM

1 stop11h 25mJetBlue

Fri 16/515:35PWM - LHR

1 stop12h 55mJetBlue

Deal found 28/4£594

Thu 8/513:05LHR - PWM

2 stops14h 54mMultiple Airlines

Fri 16/515:35PWM - LHR

2 stops15h 20mMultiple Airlines

Deal found 28/4£697

Thu 8/508:40LHR - PWM

3 stops19h 47mAir Canada

Fri 16/506:00PWM - LHR

3 stops19h 30mAir Canada

Deal found 28/4£1,252

Fri 9/511:20LHR - PWM

1 stop17h 39mKLM

Thu 15/514:30PWM - LHR

1 stop13h 45mKLM

Deal found 29/4£567

Fri 9/511:45LHR - PWM

2 stops17h 29mDelta

Thu 15/514:30PWM - LHR

1 stop15h 55mDelta

Deal found 29/4£581

Tue 27/508:15LHR - PWM

1 stop11h 25mJetBlue

Tue 3/615:06PWM - LHR

1 stop13h 24mJetBlue

Deal found 28/4£551

Tue 27/507:05LHR - PWM

2 stops22h 09mScandinavian Airlines

Tue 3/614:30PWM - LHR

2 stops22h 10mScandinavian Airlines

Deal found 28/4£654

One-way flights from Heathrow to Portland
Search for one-way flight options from Heathrow to Portland. Find affordable one-way fares based on user searches. Data last updated 30 April 2025.

Thu 5/622:00LHR - PWM

3 stops42h 53mMultiple Airlines

Deal found 29/4£425

Wed 14/508:15LHR - PWM

1 stop11h 25mJetBlue

Deal found 28/4£512

Wed 14/507:05LHR - PWM

3 stops22h 09mScandinavian Airlines

Deal found 28/4£1,884

Cheapflights Fare Finder

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

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Thu 2/10

11:55-21:59

1 stop15h 04m

Portland

Mon 6/10

14:15-09:30

1 stop14h 15m

£490

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Thu 2/10

08:25-21:59

2 stops18h 34m

Portland

Mon 6/10

07:30-09:30

1 stop21h 00m

£536

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Fri 9/5

11:20-23:59

1 stop17h 39m

Portland

Thu 15/5

14:30-09:15

1 stop13h 45m

£567

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Fri 9/5

11:45-00:14

2 stops17h 29m

Portland

Thu 15/5

14:30-11:25

1 stop15h 55m

£581

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Thu 2/10

06:30-18:37

2 stops17h 07m

Portland

Mon 6/10

15:13-10:40

2 stops14h 27m

£647

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Tue 27/5

07:05-00:14

2 stops22h 09m

Portland

Tue 3/6

14:30-17:40

2 stops22h 10m

£654

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Thu 12/6

06:00-23:30

3 stops22h 30m

Portland

Thu 19/6

17:35-06:35

2 stops32h 00m

£688

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Sun 1/6

09:35-23:59

2 stops19h 24m

Portland

Tue 10/6

12:55-13:30

1 stop19h 35m

£697

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Thu 2/10

08:30-23:01

3 stops19h 31m

Portland

Mon 6/10

08:00-06:30

3 stops17h 30m

£955

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Sun 6/7

22:25-23:37

2 stops30h 12m

Portland

Sat 12/7

06:10-09:50

2 stops22h 40m

£1,102

Flights are sorted by cheapest return flights first.

Deals found on 29/4

Showing 1-10 of 13 results

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

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

When flying from London Heathrow Airport to Portland, Maine, the time of day you fly usually plays a role in the price. Save by searching for a flight in the afternoon, which can drop the price by up to 34% versus a flight at midday.

Rainfall in Portland by month

In terms of precipitation, rainfall in Portland, Maine ranges from 73.0 - 115.0 inches per month. November is typically the wettest month, when rainfall can reach 115.0 mm. August is typically the driest time to visit Portland, Maine when rainfall is around 73.0 mm.

Temperature in Portland by month

If weather is an important factor for your trip to Portland, Maine, 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 20.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around -5.0 C).

Reviews of airlines servicing Portland

Read reviews from past customers who have flown Delta, KLM and United Airlines from London to Portland. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.

Delta

8.0

Very Good

7,929 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Delta

8.0

Very Good

7,929 reviews

Delta

8.0

Very Good

7,929 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

KLM

7.8

Good

1,334 reviews

Delta

8.0

Very Good

7,929 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

United Airlines

7.4

Good

8,696 reviews

Delta

8.0

Very Good

7,929 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Virgin Atlantic

7.4

Good

642 reviews

Delta

8.0

Very Good

7,929 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

JetBlue

7.3

Good

2,922 reviews

Delta

8.0

Very Good

7,929 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Related info for your journey

What airport do you fly into for flights to Portland from London Heathrow?
Located just 2.9 mi from the city center, Portland is the airport most travelers will use when flying to Portland from London Heathrow. Booking flights from London Heathrow to Portland (PWM) should be relatively easy as there are 0 daily inbound flights from London Heathrow from 6 different airlines.
What are the cheapest airlines flying from London Heathrow Airport to Portland, Maine round-trip?
According to our current data, JetBlue (£490), Icelandair (£536), and KLM (£567) offers the cheapest pricing from London Heathrow Airport to Portland, Maine. Users have found that JetBlue is 25% cheaper than the other options available to this destination.
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.

See more FAQs

Bath

Browse thousands of different options on Cheapflights for your next trip

Alternative routes for Heathrow to Portland

Heathrow to Boston flights

Gatwick to Boston flights

London City to Boston flights

Stansted to Boston flights

Luton to Boston flights

Southend to Boston flights

Heathrow to Bangor flights

Direct flights to United States

Top 6 airlines flying from Heathrow to Portland

Airline	Cheapest	Average	Flexibility	On-time
Icelandair	Cheapest£384	Average£588	FlexibilityNo cancel fee	On-time76%	Search Icelandair flights
JetBlue	Cheapest£400	Average£609	FlexibilityNo cancel fee	On-time62%	Search JetBlue flights
Virgin Atlantic	Cheapest£470	Average£643	FlexibilityNo cancel fee	On-time72%	Search Virgin Atlantic flights
Finnair	Cheapest£479	Average£635	FlexibilityNo cancel fee	On-time76%	Search Finnair flights
KLM	Cheapest£483	Average£626	FlexibilityNo cancel fee	On-time75%	Search KLM flights
United Airlines	Cheapest£536	Average£659	FlexibilityNo cancel fee	On-time69%	Search United Airlines flights

Fly with Cheapflights

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

900+ travel sites are searched through when a user searches for a flight using Cheapflights. From the search interface, users can use filters to choose airlines, airports, flight times, cabin classes and more to their preference. Book your flight to Portland from Heathrow today with Cheapflights!

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

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 Portland from Heathrow.

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

Certainly. Search results for flights to Portland from Heathrow shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

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

Not ready to book yet? You can track prices for flights from Heathrow to Portland on Cheapflights with our Price Alert feature and get notified when better prices are available.

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Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.

Cheap flights from London Heathrow Airport to Portland, Maine from £425

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 5/6. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from Heathrow to Portland

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Find flight deals from Heathrow to Portland

Cheapest flights from Heathrow to PortlandExplore 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 April 2025.

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 April 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from London Heathrow Airport to Portland that are best for you.

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.

Cheapflights Insights

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

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

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 April 2025.

Rainfall in Portland by month

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

Temperature in Portland by month

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

Reviews of airlines servicing Portland

Read reviews from past customers who have flown Delta, KLM and United Airlines from London to Portland. You can also see how each airline compares 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 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?

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

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

How can I find direct flights from Heathrow to Portland?

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

Travelling to a place near 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 Heathrow to Portland

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

Top 6 airlines flying from Heathrow to Portland

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?

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

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

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

100% Free

Book with Flexibility

Travel Smart

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 April 2025.