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

Airlines like United Airlines, Austrian Airlines, and American Airlines fly from United Kingdom to Portland, Maine in about 16h 29m. The time it takes to get you to your destination can typically vary by up to 14h 29m. The distance between United Kingdom and Portland, Maine is about 3173 mi. This flight may include one or multiple stops.

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.

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).

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

While some choose either Manchester - Portland or Newcastle upon Tyne - Portland, London Heathrow - Portland is the most popular route from United Kingdom to Portland, Maine.

What are the most popular airlines that fly from United Kingdom to Portland, Maine?

The most popular airlines flying from United Kingdom to Portland, Maine are KLM, United Airlines and Virgin Atlantic. Something to consider prior to booking your flight.

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.

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.

£481+ Flights from the United Kingdom to Portland, Maine

Cheap flight deals from United Kingdom to Portland

Round-trip from	£595
One-way from	£481
Popular in	October
Cheapest in	September
Average price	£598

United Airlines
27/11-4/12
3 total stops
26h 49m total
United Kingdom to Portland

Search Deals

26/11
3 total stops
31h 25m total
United Kingdom to Portland

Search Deals

High demand for flights, 1% potential price rise

Search Deals

Cheapest flight prices on average. 2% potential price decrease (£14 potential savings vs. average return price).

Search Deals

Average for round-trip flights in November 2025

Search Deals

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 1 November 2025.

Thu 27/1107:30LHR - PWM

2 stops16h 29mUnited Airlines

Thu 4/1206:00PWM - LHR

1 stop10h 20mUnited Airlines

Deal found 30/10£595

Thu 27/1116:00LHR - PWM

1 stop30h 58mAustrian Airlines

Thu 4/1210:35PWM - LHR

1 stop18h 50mAustrian Airlines

Deal found 30/10£606

Sun 14/1208:55LHR - PWM

1 stop18h 28mMultiple Airlines

Sun 21/1205:45PWM - LHR

1 stop19h 40mMultiple Airlines

Deal found 30/10£777

Wed 12/1109:00LHR - PWM

2 stops18h 19mVirgin Atlantic

Thu 20/1113:25PWM - LHR

2 stops14h 55mVirgin Atlantic

Deal found 30/10£839

Mon 15/1208:40LHR - PWM

2 stops20h 19mDelta

Mon 22/1213:03PWM - LHR

1 stop12h 52mDelta

Deal found 31/10£842

Mon 15/1207:50LHR - PWM

2 stops15h 25mAmerican Airlines

Mon 22/1218:41PWM - LHR

2 stops13h 44mAmerican Airlines

Deal found 31/10£846

Wed 12/1112:10LHR - PWM

1 stop16h 49mMultiple Airlines

Thu 20/1115:52PWM - LHR

1 stop9h 43mMultiple Airlines

Deal found 31/10£867

Mon 15/1206:00MAN - PWM

2 stops20h 17mUnited Airlines

Mon 22/1219:30PWM - MAN

2 stops35h 50mUnited Airlines

Deal found 31/10£960

Best flights from United Kingdom to Portland
Discover carefully curated flight deals from United Kingdom to Portland that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 1 November 2025.

Thu 27/1107:30LHR - PWM

2 stops16h 29mUnited Airlines

Thu 4/1206:00PWM - LHR

2 stops24h 15mUnited Airlines

Deal found 30/10£595

Thu 27/1116:00LHR - PWM

1 stop30h 58mAustrian Airlines

Thu 4/1210:35PWM - LHR

1 stop18h 50mAustrian Airlines

Deal found 30/10£606

Sun 14/1208:55LHR - PWM

1 stop18h 28mMultiple Airlines

Sun 21/1205:45PWM - LHR

1 stop19h 40mMultiple Airlines

Deal found 30/10£777

Wed 12/1109:00LHR - PWM

2 stops18h 19mVirgin Atlantic

Thu 20/1113:25PWM - LHR

2 stops14h 55mVirgin Atlantic

Deal found 30/10£839

Mon 15/1208:40LHR - PWM

2 stops20h 19mDelta

Mon 22/1213:03PWM - LHR

1 stop12h 52mDelta

Deal found 31/10£842

Mon 15/1207:50LHR - PWM

2 stops15h 25mAmerican Airlines

Mon 22/1218:41PWM - LHR

2 stops13h 44mAmerican Airlines

Deal found 31/10£846

Wed 12/1112:10LHR - PWM

1 stop16h 49mMultiple Airlines

Thu 20/1115:52PWM - LHR

1 stop9h 43mMultiple Airlines

Deal found 31/10£867

Thu 26/308:25EDI - PWM

2 stops16h 59mUnited Airlines

Mon 30/319:22PWM - EDI

2 stops31h 43mUnited Airlines

Deal found 31/10£959

Fri 27/309:45NCL - PWM

2 stops16h 47mAmerican Airlines

Tue 31/316:11PWM - NCL

2 stops19h 04mAmerican Airlines

Deal found 31/10£996

Fri 27/311:00MAN - PWM

2 stops16h 49mDelta

Tue 31/314:35PWM - MAN

1 stop12h 49mDelta

Deal found 31/10£1,026

Mon 15/1206:00MAN - PWM

2 stops20h 17mUnited Airlines

Mon 22/1219:30PWM - MAN

2 stops35h 50mUnited Airlines

Deal found 31/10£960

Fri 27/307:50MAN - PWM

2 stops18h 40mAmerican Airlines

Tue 31/316:11PWM - MAN

2 stops15h 59mAmerican Airlines

Deal found 31/10£999

Fri 27/306:05MAN - PWM

2 stops37h 09mUnited Airlines

Tue 31/315:15PWM - MAN

2 stops21h 05mUnited Airlines

Deal found 30/10£975

Last-minute flights from United Kingdom to Portland
Discover last-minute flight deals from United Kingdom to Portland. Data last updated 1 November 2025 and is based on user searches.

Wed 12/1109:00LHR - PWM

2 stops18h 19mVirgin Atlantic

Thu 20/1113:25PWM - LHR

2 stops14h 55mVirgin Atlantic

Deal found 30/10£839

Wed 12/1112:10LHR - PWM

1 stop16h 49mMultiple Airlines

Thu 20/1115:52PWM - LHR

1 stop9h 43mMultiple Airlines

Deal found 31/10£867

Wed 12/1106:40LHR - PWM

2 stops22h 14mScandinavian Airlines

Thu 20/1114:30PWM - LHR

3 stops20h 55mScandinavian Airlines

Deal found 31/10£1,800

Thu 27/1107:30LHR - PWM

2 stops16h 29mUnited Airlines

Thu 4/1206:00PWM - LHR

1 stop10h 20mUnited Airlines

Deal found 30/10£595

Thu 27/1116:00LHR - PWM

1 stop30h 58mAustrian Airlines

Thu 4/1210:35PWM - LHR

1 stop18h 50mAustrian Airlines

Deal found 30/10£606

Thu 27/1113:40LHR - PWM

2 stops24h 39mMultiple Airlines

Thu 4/1219:46PWM - LHR

3 stops20h 49mMultiple Airlines

Deal found 30/10£1,132

One-way flights from United Kingdom to Portland
Search for one-way flight options from United Kingdom to Portland. Find affordable one-way fares based on user searches. Data last updated 1 November 2025.

Wed 26/1112:05LHR - PWM

3 stops31h 25mMultiple Airlines

Deal found 30/10£481

Thu 27/1116:10LHR - PWM

2 stops35h 44mAmerican Airlines

Deal found 30/10£542

Thu 27/1115:50LHR - PWM

1 stop25h 40mDelta

Deal found 30/10£570

Thu 27/1114:50LHR - PWM

3 stops28h 01mMultiple Airlines

Deal found 30/10£602

Wed 26/1112:00LHR - PWM

2 stops30h 36mAir Canada

Deal found 30/10£603

Wed 26/1108:00LHR - PWM

1 stop14h 58mAustrian Airlines

Deal found 30/10£620

Wed 26/1116:10LHR - PWM

2 stops26h 09mAmerican Airlines

Deal found 30/10£634

Wed 26/1110:10LHR - PWM

1 stop18h 49mDelta

Deal found 31/10£659

Cheapflights Fare Finder

Use the filters below to find and compare flights from the United Kingdom to Portland that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Thu 27/11

07:30-18:59

2 stops16h 29m

Portland

Thu 4/12

06:00-11:15

2 stops24h 15m

£595

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Thu 27/11

16:00-17:58

1 stop30h 58m

Portland

Thu 4/12

10:35-10:25

1 stop18h 50m

£606

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Sun 14/12

08:55-22:23

1 stop18h 28m

Portland

Sun 21/12

05:45-06:25

1 stop19h 40m

£777

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Wed 12/11

09:00-22:19

2 stops18h 19m

Portland

Thu 20/11

13:25-09:20

2 stops14h 55m

£839

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Mon 15/12

08:40-23:59

2 stops20h 19m

Portland

Mon 22/12

13:03-06:55

1 stop12h 52m

£842

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Mon 15/12

07:50-18:15

2 stops15h 25m

Portland

Mon 22/12

18:41-13:25

2 stops13h 44m

£846

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Wed 12/11

12:10-23:59

1 stop16h 49m

Portland

Thu 20/11

15:52-06:35

1 stop9h 43m

£867

EdinburghPortland

EDI - PWM

EDIPWM

Edinburgh Turnhouse

Thu 26/3

08:25-21:24

2 stops16h 59m

Portland

Mon 30/3

19:22-08:05

2 stops31h 43m

£959

ManchesterPortland

MAN - PWM

MANPWM

Manchester

Mon 15/12

06:00-21:17

2 stops20h 17m

Portland

Mon 22/12

19:30-12:20

2 stops35h 50m

£960

ManchesterPortland

MAN - PWM

MANPWM

Manchester

Fri 27/3

06:05-15:14

2 stops37h 09m

Portland

Tue 31/3

15:15-17:20

2 stops21h 05m

£975

Flights are sorted by cheapest return flights first.

Deals found on 30/10

Showing 1-10 of 21 results

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 £111). 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?

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 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.

KLM

7.7

Good

1,406 reviews

Check prices

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.

KLM

7.7

Good

1,406 reviews

KLM

7.7

Good

1,406 reviews

Check prices

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.

Finnair

7.6

Good

1,333 reviews

KLM

7.7

Good

1,406 reviews

Check prices

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.

Virgin Atlantic

7.5

Good

671 reviews

KLM

7.7

Good

1,406 reviews

Check prices

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.

United Airlines

7.4

Good

8,992 reviews

KLM

7.7

Good

1,406 reviews

Check prices

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.

JetBlue

7.2

Good

2,907 reviews

KLM

7.7

Good

1,406 reviews

Check prices

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

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, Austrian Airlines, and American Airlines fly from United Kingdom to Portland, Maine in about 16h 29m. The time it takes to get you to your destination can typically vary by up to 14h 29m. 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?
While some choose either Manchester - Portland or Newcastle upon Tyne - Portland, London Heathrow - Portland is the most popular route 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 £111). 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

Bath

Browse thousands of different options on Cheapflights for your next trip

Alternative routes for United Kingdom to Portland

Heathrow to Boston flights

Gatwick to Boston flights

London City to Boston flights

Stansted to Boston flights

Luton to Boston flights

Manchester to Boston flights

Edinburgh to Boston flights

Southend to Boston flights

Glasgow Intl to Boston flights

Birmingham to Boston flights

Newcastle upon Tyne to Boston flights

Leeds to Boston flights

Darlington to Boston flights

Dublin to Boston flights

Bristol to Boston flights

Liverpool to Boston flights

Southampton to Boston flights

Heathrow to Portland flights

Belfast Intl to Boston flights

Cardiff to Boston flights

Belfast City to Boston flights

Istanbul to Boston flights

Heathrow to Bangor flights

Barcelona-El Prat to Boston flights

Madrid to Boston flights

Manchester to Portland flights

Inverness to Boston flights

Newquay to Boston flights

Norwich to Boston flights

Vicenza to Boston flights

Edinburgh to Portland flights

Aberdeen to Boston flights

Newcastle upon Tyne to Portland flights

Munich to Boston flights

East Midlands to Boston flights

Charles de Gaulle to Boston flights

Amsterdam to Boston flights

Doncaster to Boston flights

Athens to Boston flights

Direct flights to United States

Top 7 airlines flying from United Kingdom to Portland

Airline	Cheapest	Average	Flexibility	On-time
Icelandair	Cheapest£392	Average£604	FlexibilityNo cancel fee	On-time76%	Search Icelandair flights
JetBlue	Cheapest£407	Average£553	FlexibilityNo cancel fee	On-time62%	Search JetBlue flights
Virgin Atlantic	Cheapest£481	Average£666	FlexibilityNo cancel fee	On-time72%	Search Virgin Atlantic flights
Finnair	Cheapest£482	Average£629	FlexibilityNo cancel fee	On-time76%	Search Finnair flights
KLM	Cheapest£511	Average£766	FlexibilityNo cancel fee	On-time75%	Search KLM flights
United Airlines	Cheapest£568	Average£846	FlexibilityNo cancel fee	On-time69%	Search United Airlines flights
Aer Lingus	Cheapest£631	Average£912	FlexibilityNo cancel fee	On-timeN/A	Search Aer Lingus flights

Fly with Cheapflights

How does Cheapflights help users find flights from United Kingdom to Portland?

Cheapflights goes through 900+ travel sites to look for the best flight deals for flights from United Kingdom to Portland. Too many options? Cheapflights also provides filters for things like airlines, price ranges, and number of stops to help you make a decision easily.

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

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 United Kingdom to Portland.

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

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

Can Cheapflights notify me if prices for flights from United Kingdom to Portland 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!

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

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 the United Kingdom to Portland, Maine from £481

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 26/11. Fares are subject to change and may not be available on all flights or dates of travel.

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 1 November 2025.

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Find flight deals from United Kingdom to Portland

Cheapest flights from United Kingdom to PortlandExplore 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 1 November 2025.

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 1 November 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from the United Kingdom to Portland that are best for you.

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.

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?

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 1 November 2025.

Reviews of airlines servicing Portland

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.

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?

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

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?

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

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

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

Travelling to a place near Portland?

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 United Kingdom to Portland

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

Top 7 airlines flying from United Kingdom 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 United Kingdom to Portland?

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

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

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

100% Free

Book with Flexibility

Travel Smart

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 1 November 2025.