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Cheap flights from London Heathrow Airport to Portland, Maine from £404

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.
LHR — PWM
26 Jan — 2 Feb1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Heathrow to Portland

Enter your travel dates to find the best prices.

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 27 December 2025.

Mon 9/211:45LHR - PWM
2 stops17h 35mDelta
Mon 16/214:35PWM - LHR
1 stop10h 45mDelta
Deal found 26/12£537
Mon 9/210:15LHR - PWM
1 stop17h 39mMultiple Airlines
Mon 16/212:43PWM - LHR
1 stop12h 52mMultiple Airlines
Deal found 26/12£539
Thu 5/212:05LHR - PWM
2 stops16h 25mUnited Airlines
Mon 9/215:12PWM - LHR
1 stop12h 13mUnited Airlines
Deal found 26/12£582
Mon 23/311:45LHR - PWM
2 stops16h 14mDelta
Mon 30/312:51PWM - LHR
2 stops17h 19mDelta
Deal found 26/12£588
Sun 1/208:40LHR - PWM
2 stops20h 40mDelta
Sat 7/214:35PWM - LHR
1 stop24h 35mDelta
Deal found 25/12£598

Find flight deals from Heathrow to Portland

Discover tips and strategies to find the most affordable flight options for your journey from Heathrow (LHR) to Portland (PWM). 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 27 December 2025.

Round-trip from

£537

One-way from

£404

Popular in

December

Cheapest in

February

Average price

£1,157
Delta
  • Delta
  • 9/2-16/2
  • 3 total stops
  • 28h 20m total
  • London to Portland
Search Deals
JetBlue
  • JetBlue
  • 15/4
  • 1 total stop
  • 19h 44m total
  • London to Portland
Search Deals
Highest demand for flights based on searches. 13% potential increase in price (£73 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 7% potential price decrease (£35 potential savings vs. average return price).
Search Deals
Average for round-trip flights in December 2025
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from Heathrow to Portland 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 27 December 2025.
Use the filters below to find and compare flights from London Heathrow Airport to Portland that are best for you.

Fly from

Heathrow

Fly to

Portland

Route

Depart

Return

Price

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Mon 9/2

11:45-00:20

2 stops17h 35m

Portland

Mon 16/2

14:35-06:20

1 stop10h 45m

£537

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Mon 9/2

10:15-22:54

1 stop17h 39m

Portland

Mon 16/2

12:43-06:35

1 stop12h 52m

£539

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Thu 5/2

12:05-23:30

2 stops16h 25m

Portland

Mon 9/2

15:12-08:25

1 stop12h 13m

£582

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Mon 23/3

11:45-23:59

2 stops16h 14m

Portland

Mon 30/3

12:51-11:10

2 stops17h 19m

£588

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Sun 1/2

08:40-00:20

2 stops20h 40m

Portland

Sat 7/2

14:35-20:10

1 stop24h 35m

£598

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Tue 14/4

18:05-15:09

2 stops26h 04m

£413

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Wed 15/4

18:05-15:09

2 stops26h 04m

£413

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Mon 13/4

18:05-15:09

2 stops26h 04m

£413

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Sat 18/4

21:10-10:49

3 stops42h 39m

£416

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Tue 14/4

13:05-23:23

1 stop15h 18m

£433

Flights are sorted by cheapest return flights first.

Deals found on 26/12

Showing 1-10 of 17 results
1
2

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 month to book a flight from London Heathrow Airport to Portland, Maine?

Currently, February is the cheapest month in which you can book a flight from London Heathrow Airport to Portland, Maine (average of £324). Flying from London Heathrow Airport to Portland, Maine in July is currently the most expensive (average of £373). 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.

How much does it cost for a return flight from London Heathrow Airport to Portland, Maine?

Reviews of airlines servicing Portland

Get insights into the airlines that provide service to Portland. 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 Portland. Reviews last updated 27 December 2025.
Check out reviews from past customers who have flown with KLM, Finnair, andVirgin Atlantic from London Heathrow Airport to Portland to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
KLM
7.7
Good
1,434 reviews
Check prices

Boarding

7.7

Comfort

7.6

Crew

8.3

Overall

7.7

Entertainment

7.1

Food

7.2

Reviews

1 / 20
8.0
Excellent

Anonymous,Dec 2025

YYC - AMS

Not literally sitting in the very last row in the middle
KLM
7.7
Good
1,434 reviews
KLM
7.7
Good
1,434 reviews
Check prices

Boarding

7.7

Comfort

7.6

Crew

8.3

Overall

7.7

Entertainment

7.1

Food

7.2

Reviews

1 / 20
8.0
Excellent

Anonymous,Dec 2025

YYC - AMS

Not literally sitting in the very last row in the middle
Finnair
7.6
Good
1,339 reviews
KLM
7.7
Good
1,434 reviews
Check prices

Boarding

7.7

Comfort

7.6

Crew

8.3

Overall

7.7

Entertainment

7.1

Food

7.2

Reviews

1 / 20
8.0
Excellent

Anonymous,Dec 2025

YYC - AMS

Not literally sitting in the very last row in the middle
Virgin Atlantic
7.5
Good
677 reviews
KLM
7.7
Good
1,434 reviews
Check prices

Boarding

7.7

Comfort

7.6

Crew

8.3

Overall

7.7

Entertainment

7.1

Food

7.2

Reviews

1 / 20
8.0
Excellent

Anonymous,Dec 2025

YYC - AMS

Not literally sitting in the very last row in the middle
United Airlines
7.4
Good
9,116 reviews
KLM
7.7
Good
1,434 reviews
Check prices

Boarding

7.7

Comfort

7.6

Crew

8.3

Overall

7.7

Entertainment

7.1

Food

7.2

Reviews

1 / 20
8.0
Excellent

Anonymous,Dec 2025

YYC - AMS

Not literally sitting in the very last row in the middle
JetBlue
7.2
Good
2,900 reviews
KLM
7.7
Good
1,434 reviews
Check prices

Boarding

7.7

Comfort

7.6

Crew

8.3

Overall

7.7

Entertainment

7.1

Food

7.2

Reviews

1 / 20
8.0
Excellent

Anonymous,Dec 2025

YYC - AMS

Not literally sitting in the very last row in the middle

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?

    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 7 different airlines.

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

    Delta and United Airlines can get you from London Heathrow Airport to Portland, Maine in just under 16h 25m. Your travel time can differ by up to 1h 10m. The distance from London Heathrow Airport to Portland, Maine is about 3173 mi. This flight may include one or multiple stops.

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

    According to our current data, JetBlue (£396), Virgin Atlantic (£467), and Finnair (£469) offers the cheapest pricing from London Heathrow Airport to Portland, Maine. Users have found that JetBlue is 39% 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.

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

    Currently, February is the cheapest month in which you can book a flight from London Heathrow Airport to Portland, Maine (average of £324). Flying from London Heathrow Airport to Portland, Maine in July is currently the most expensive (average of £373). 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 Portland?

Book flights to Portland if you plan to visit one of these locations
Bath

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Alternative routes for Heathrow to Portland

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

Top 7 airlines flying from Heathrow to Portland

Discover the top 7 airlines that operate flights from Heathrow to Portland. 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 27 December 2025.
AirlineCheapestAverageFlexibilityOn-time
JetBlueCheapest£396Average£524FlexibilityNo cancel feeOn-time62%
Search JetBlue flights
Virgin AtlanticCheapest£467Average£566FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
FinnairCheapest£469Average£578FlexibilityNo cancel feeOn-time76%
Search Finnair flights
IcelandairCheapest£487Average£639FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
KLMCheapest£497Average£616FlexibilityNo cancel feeOn-time75%
Search KLM flights
LufthansaCheapest£509Average£915FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
United AirlinesCheapest£553Average£721FlexibilityNo cancel feeOn-time69%
Search United Airlines 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 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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