Cheap flights from the United Kingdom to Portland, Maine from £478

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 29/12. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — PWM
22 Dec — 29 Dec1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from United Kingdom to Portland

Keep the following information in mind while searching for United Kingdom to Portland flight deals. Data was last updated 22 November 2025.

Round-trip from

£564

One-way from

£478

Popular in

August

Cheapest in

October

Average price

£580
United Airlines
  • United Airlines
  • 12/1-19/1
  • 3 total stops
  • 26h 45m total
  • United Kingdom to Portland
29/12
  • 29/12
  • 3 total stops
  • 52h 06m total
  • United Kingdom to Portland
Highest demand for flights based on searches. 8% potential increase in price (£46 potential increase over avg. return price).
Cheapest flight prices on average. 2% potential price decrease (£13 potential savings vs. average return price).
Average for round-trip flights in November 2025

Find flight deals from United Kingdom to Portland

Enter your travel dates to find the best prices.

Cheapest flights from United Kingdom to Portland
Explore the most affordable flight options available from United Kingdom to Portland. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 22 November 2025.

Thu 4/1216:25LHR - PWM
2 stops48h 46mAmerican Airlines
Mon 8/1215:55PWM - LHR
2 stops15h 35mAmerican Airlines
Deal found 19/11£641
Thu 4/1218:40LHR - PWM
2 stops34h 19mScandinavian Airlines
Mon 8/1214:34PWM - LHR
2 stops26h 06mScandinavian Airlines
Deal found 20/11£672
Tue 23/1220:25LHR - PWM
2 stops31h 18mMultiple Airlines
Tue 6/105:30PWM - LHR
2 stops33h 40mMultiple Airlines
Deal found 20/11£750
Tue 23/1215:30LHR - PWM
2 stops31h 56mUnited Airlines
Tue 6/119:27PWM - LHR
1 stop10h 38mUnited Airlines
Deal found 20/11£764
Thu 4/1206:30LHR - PWM
2 stops20h 53mVirgin Atlantic
Mon 8/1206:08PWM - LHR
1 stop19h 17mVirgin Atlantic
Deal found 20/11£881
Thu 4/1216:10LHR - PWM
1 stop12h 49mDelta
Mon 8/1216:53PWM - LHR
1 stop10h 52mDelta
Deal found 20/11£894
Mon 15/1208:35EDI - PWM
2 stops38h 40mMultiple Airlines
Mon 29/1212:37PWM - EDI
2 stops15h 13mMultiple Airlines
Deal found 20/11£1,032
Tue 16/1205:50EDI - PWM
2 stops23h 09mDelta
Tue 30/1213:03PWM - EDI
2 stops14h 37mDelta
Deal found 20/11£1,056
Mon 15/1211:45EDI - PWM
1 stop17h 14mDelta
Tue 30/1213:03PWM - EDI
2 stops14h 37mDelta
Deal found 20/11£1,085
Mon 15/1212:30EDI - PWM
1 stop30h 49mUnited Airlines
Tue 30/1214:55PWM - EDI
1 stop12h 00mUnited Airlines
Deal found 20/11£1,111
Mon 15/1212:30EDI - PWM
2 stops15h 39mUnited Airlines
Sun 28/1219:30PWM - EDI
1 stop10h 00mUnited Airlines
Deal found 20/11£1,184
Mon 15/1211:45EDI - PWM
1 stop17h 14mDelta
Mon 29/1205:45PWM - EDI
2 stops21h 55mDelta
Deal found 20/11£1,220

Cheapflights Fare Finder

 
Customise your flight search to find flights from United Kingdom 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 22 November 2025.
Use the filters below to find and compare flights from the United Kingdom to Portland that are best for you.

Fly from

United Kingdom

Fly to

Portland

Route

Depart

Return

Price

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Mon 12/1

12:05-23:30

2 stops16h 25m

Portland

Mon 19/1

06:00-21:20

1 stop10h 20m

£564

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Mon 12/1

10:00-00:20

2 stops19h 20m

Portland

Mon 19/1

12:20-09:20

2 stops16h 00m

£614

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Sun 15/2

08:30-15:14

2 stops35h 44m

Portland

Sat 28/2

15:05-09:10

1 stop13h 05m

£627

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Thu 4/12

16:25-12:11

2 stops48h 46m

Portland

Mon 8/12

15:55-12:30

2 stops15h 35m

£641

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Sun 15/2

13:10-22:59

1 stop14h 49m

Portland

Sat 28/2

12:35-06:35

1 stop13h 00m

£670

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Thu 4/12

18:40-23:59

2 stops34h 19m

Portland

Mon 8/12

14:34-21:40

2 stops26h 06m

£672

ManchesterPortland

MAN - PWM

MANPWM

Manchester

Wed 11/3

06:00-15:14

2 stops37h 14m

Portland

Sun 15/3

16:23-12:20

2 stops39h 57m

£686

Newcastle upon TynePortland

NCL - PWM

NCLPWM

Newcastle upon Tyne

Thu 22/1

09:30-22:54

2 stops18h 24m

Portland

Mon 26/1

07:00-11:25

2 stops23h 25m

£705

Newcastle upon TynePortland

NCL - PWM

NCLPWM

Newcastle upon Tyne

Thu 19/2

09:30-22:59

2 stops18h 29m

Portland

Mon 23/2

07:00-11:25

2 stops23h 25m

£707

ManchesterPortland

MAN - PWM

MANPWM

Manchester

Wed 11/3

07:50-22:30

2 stops18h 40m

Portland

Sun 15/3

13:11-10:55

2 stops17h 44m

£711

Flights are sorted by cheapest return flights first.

Deals found on 21/11

Showing 1-10 of 32 results
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Best time to book a flight from United Kingdom to Portland

Have a flexible travel schedule? Discover the best time to fly to Portland from United Kingdom 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 the United Kingdom to Portland

What is the cheapest month to book a flight from United Kingdom to Portland, Maine?

Currently, June is the cheapest month in which you can book a flight from United Kingdom to Portland, Maine (average of £112). Flying from United Kingdom to Portland, Maine in February is currently the most expensive (average of £323). 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 GB to PWM?

Find hourly flight availability from United Kingdom 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 22 November 2025.

A simple way to save on the total cost of your ticket is to fly from United Kingdom to Portland, Maine in the evening. If you’re flexible enough to do this you can expect to save up to 29% on your trip compared to booking a flight at midday.

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 22 November 2025.
Get a feel of what it's like to fly with KLM, Finnair, andVirgin Atlantic from the United Kingdom to Portland by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

Entertainment

7.1

Boarding

7.8

Comfort

7.6

Overall

7.7

Food

7.3

Crew

8.4

Reviews

1 / 20
2.0
Mediocre

Abisola,Oct 2025

LOS - CDG

The food option was finished and what wa left was vegan pasta so I had to go without food for an 8 hour flight without any sort of empathy from crew that was mean.

Entertainment

7.1

Boarding

7.8

Comfort

7.6

Overall

7.7

Food

7.3

Crew

8.4

Reviews

1 / 20
2.0
Mediocre

Abisola,Oct 2025

LOS - CDG

The food option was finished and what wa left was vegan pasta so I had to go without food for an 8 hour flight without any sort of empathy from crew that was mean.

Entertainment

7.1

Boarding

7.8

Comfort

7.6

Overall

7.7

Food

7.3

Crew

8.4

Reviews

1 / 20
2.0
Mediocre

Abisola,Oct 2025

LOS - CDG

The food option was finished and what wa left was vegan pasta so I had to go without food for an 8 hour flight without any sort of empathy from crew that was mean.

Entertainment

7.1

Boarding

7.8

Comfort

7.6

Overall

7.7

Food

7.3

Crew

8.4

Reviews

1 / 20
2.0
Mediocre

Abisola,Oct 2025

LOS - CDG

The food option was finished and what wa left was vegan pasta so I had to go without food for an 8 hour flight without any sort of empathy from crew that was mean.

Entertainment

7.1

Boarding

7.8

Comfort

7.6

Overall

7.7

Food

7.3

Crew

8.4

Reviews

1 / 20
2.0
Mediocre

Abisola,Oct 2025

LOS - CDG

The food option was finished and what wa left was vegan pasta so I had to go without food for an 8 hour flight without any sort of empathy from crew that was mean.

Entertainment

7.1

Boarding

7.8

Comfort

7.6

Overall

7.7

Food

7.3

Crew

8.4

Reviews

1 / 20
2.0
Mediocre

Abisola,Oct 2025

LOS - CDG

The food option was finished and what wa left was vegan pasta so I had to go without food for an 8 hour flight without any sort of empathy from crew that was mean.

Related info for your journey

Find useful and relevant information for your journey from United Kingdom 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 United Kingdom?

    If you book a flight to Portland from United Kingdom, you will be flying to Portland, which is the city’s only airport. Portland (PWM) is located 2.9 mi from the center of Portland.

  • How long is the flight from United Kingdom to Portland, Maine?

    Airlines like United Airlines, Delta, and American Airlines fly from United Kingdom to Portland, Maine in about 16h 25m. The time it takes to get you to your destination can typically vary by up to 32h 21m. The distance between United Kingdom and Portland, Maine is about 3173 mi. This flight may include one or multiple stops.

  • What are the most popular routes from United Kingdom to Portland, Maine?

  • Can I find deals for flights from United Kingdom to Portland that include hotel bookings?

    Yes. In addition to deals on United Kingdom to Portland flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from United Kingdom to Portland?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from United Kingdom to Portland.

  • Can I find deals for business class flights from United Kingdom to Portland?

    Yes. Cheapflights offers flight deals from United Kingdom 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 United Kingdom to Portland, Maine?

    Currently, June is the cheapest month in which you can book a flight from United Kingdom to Portland, Maine (average of £112). Flying from United Kingdom to Portland, Maine in February is currently the most expensive (average of £323). 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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Top 8 airlines flying from United Kingdom to Portland

Discover the top 8 airlines that operate flights from United Kingdom 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 22 November 2025.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest£394Average£607FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
JetBlueCheapest£409Average£541FlexibilityNo cancel feeOn-time62%
Search JetBlue flights
Virgin AtlanticCheapest£483Average£669FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
FinnairCheapest£484Average£632FlexibilityNo cancel feeOn-time76%
Search Finnair flights
KLMCheapest£513Average£725FlexibilityNo cancel feeOn-time75%
Search KLM flights
LufthansaCheapest£526Average£944FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
United AirlinesCheapest£570Average£822FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
Aer LingusCheapest£634Average£916FlexibilityNo cancel feeOn-timeN/A
Search Aer Lingus flights

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