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

Airlines like United Airlines, American Airlines, and Delta fly from United Kingdom to Portland, Maine in about 16h 26m. The time it takes to get you to your destination can typically vary by up to 13h 19m. 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.

£364+ Flights from the United Kingdom to Portland, Maine

Cheap 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 6 December 2025.

Thu 4/1212:05LHR - PWM

1 stop11h 49mUnited Airlines

Mon 8/1219:46PWM - LHR

1 stop10h 19mUnited Airlines

Deal found 3/12£1,059

Thu 4/1213:25LHR - PWM

2 stops29h 13mAir Canada

Mon 8/1206:00PWM - LHR

2 stops33h 35mAir Canada

Deal found 3/12£1,062

Fri 19/1207:00LHR - PWM

2 stops21h 59mUnited Airlines

Mon 22/1216:10PWM - LHR

1 stop34h 45mUnited Airlines

Deal found 5/12£1,249

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 6 December 2025.

Wed 4/307:30LHR - PWM

2 stops16h 26mUnited Airlines

Wed 11/311:30PWM - LHR

2 stops15h 10mUnited Airlines

Deal found 4/12£565

Mon 5/114:40LHR - PWM

2 stops36h 47mVirgin Atlantic

Sat 10/105:30PWM - LHR

2 stops57h 40mVirgin Atlantic

Deal found 4/12£683

Mon 19/109:40MAN - PWM

3 stops18h 14mAmerican Airlines

Mon 26/115:58PWM - MAN

2 stops17h 02mAmerican Airlines

Deal found 4/12£699

Mon 19/113:00MAN - PWM

1 stop29h 45mDelta

Mon 26/114:35PWM - MAN

2 stops14h 35mDelta

Deal found 4/12£702

Mon 19/111:25MAN - PWM

3 stops26h 36mMultiple Airlines

Mon 26/119:27PWM - MAN

3 stops34h 08mMultiple Airlines

Deal found 4/12£963

Mon 19/107:30LHR - PWM

2 stops16h 22mUnited Airlines

Mon 26/114:31PWM - LHR

2 stops13h 39mUnited Airlines

Deal found 5/12£568

Thu 22/106:35LHR - PWM

2 stops17h 17mUnited Airlines

Mon 26/115:12PWM - LHR

2 stops14h 38mUnited Airlines

Deal found 4/12£596

Sun 18/107:30LHR - PWM

2 stops16h 22mUnited Airlines

Sun 25/116:10PWM - LHR

1 stop34h 45mUnited Airlines

Deal found 4/12£602

Mon 19/106:00MAN - PWM

2 stops17h 52mUnited Airlines

Mon 26/115:12PWM - MAN

2 stops20h 48mUnited Airlines

Deal found 4/12£678

Wed 18/209:25EDI - PWM

2 stops14h 31mUnited Airlines

Sun 22/205:45PWM - EDI

2 stops28h 15mUnited Airlines

Deal found 3/12£698

Wed 11/306:00MAN - PWM

2 stops37h 14mUnited Airlines

Sun 15/316:23PWM - MAN

2 stops39h 57mUnited Airlines

Deal found 2/12£704

Sun 1/306:00MAN - PWM

2 stops20h 14mUnited Airlines

Wed 4/315:05PWM - MAN

2 stops14h 15mUnited Airlines

Deal found 3/12£1,582

Last-minute flights from United Kingdom to Portland
Discover last-minute flight deals from United Kingdom to Portland. Data last updated 6 December 2025 and is based on user searches.

Mon 5/114:40LHR - PWM

2 stops36h 47mVirgin Atlantic

Mon 12/105:30PWM - LHR

2 stops33h 40mVirgin Atlantic

Deal found 6/12£625

Mon 5/114:40LHR - PWM

2 stops36h 47mVirgin Atlantic

Sat 10/105:30PWM - LHR

2 stops57h 40mVirgin Atlantic

Deal found 4/12£683

Sun 18/107:30LHR - PWM

2 stops16h 22mUnited Airlines

Sun 25/116:10PWM - LHR

1 stop34h 45mUnited Airlines

Deal found 4/12£602

Mon 19/119:25LHR - PWM

2 stops33h 02mAustrian Airlines

Mon 26/108:40PWM - LHR

1 stop18h 45mAustrian Airlines

Deal found 5/12£565

Mon 19/107:30LHR - PWM

2 stops16h 22mUnited Airlines

Mon 26/114:31PWM - LHR

2 stops13h 39mUnited Airlines

Deal found 5/12£568

Mon 19/106:00MAN - PWM

2 stops17h 52mUnited Airlines

Mon 26/115:12PWM - MAN

2 stops20h 48mUnited Airlines

Deal found 4/12£678

Mon 19/109:40MAN - PWM

3 stops18h 14mAmerican Airlines

Mon 26/115:58PWM - MAN

2 stops17h 02mAmerican Airlines

Deal found 4/12£699

Mon 19/113:00MAN - PWM

1 stop29h 45mDelta

Mon 26/114:35PWM - MAN

2 stops14h 35mDelta

Deal found 4/12£702

Mon 19/111:25MAN - PWM

3 stops26h 36mMultiple Airlines

Mon 26/119:27PWM - MAN

3 stops34h 08mMultiple Airlines

Deal found 4/12£963

Thu 22/106:35LHR - PWM

2 stops17h 17mUnited Airlines

Mon 26/119:27PWM - LHR

1 stop10h 38mUnited Airlines

Deal found 4/12£596

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 6 December 2025.

Sat 31/109:55LHR - PWM

3 stops52h 12mMultiple Airlines

Deal found 6/12£364

Thu 5/206:50LHR - PWM

3 stops31h 17mMultiple Airlines

Deal found 6/12£397

Tue 3/210:15LHR - PWM

1 stop17h 39mMultiple Airlines

Deal found 6/12£401

Mon 2/208:55LHR - PWM

1 stop20h 25mDelta

Deal found 6/12£421

Sun 1/209:50LHR - PWM

3 stops28h 17mMultiple Airlines

Deal found 6/12£431

Sat 31/118:25LHR - PWM

2 stops33h 29mAmerican Airlines

Deal found 6/12£442

Fri 6/216:10LHR - PWM

2 stops28h 21mAmerican Airlines

Deal found 6/12£443

Fri 6/206:50LHR - PWM

3 stops32h 27mMultiple Airlines

Deal found 6/12£449

Sun 1/208:40LHR - PWM

2 stops20h 40mDelta

Deal found 6/12£451

Wed 4/209:00LHR - PWM

3 stops30h 21mMultiple Airlines

Deal found 6/12£461

Find flight deals from United Kingdom to Portland

Round-trip from	£565
One-way from	£364
Popular in	August
Cheapest in	October
Average price	£849

United Airlines
4/3-11/3
4 total stops
31h 36m total
United Kingdom to Portland

Search Deals

31/1
3 total stops
52h 12m total
United Kingdom to Portland

Search Deals

Highest demand for flights based on searches. 10% potential increase in price (£59 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 3% potential price decrease (£15 potential savings vs. average return price).

Search Deals

Average for round-trip flights in December 2025

Search Deals

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

Wed 4/3

07:30-18:56

2 stops16h 26m

Portland

Wed 11/3

11:30-06:40

2 stops15h 10m

£565

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Mon 19/1

07:30-18:52

2 stops16h 22m

Portland

Mon 26/1

14:31-09:10

2 stops13h 39m

£568

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Thu 22/1

06:35-18:52

2 stops17h 17m

Portland

Mon 26/1

15:12-10:50

2 stops14h 38m

£596

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Sun 18/1

07:30-18:52

2 stops16h 22m

Portland

Sun 25/1

16:10-07:55

1 stop34h 45m

£602

ManchesterPortland

MAN - PWM

MANPWM

Manchester

Mon 19/1

06:00-18:52

2 stops17h 52m

Portland

Mon 26/1

15:12-17:00

2 stops20h 48m

£678

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Mon 5/1

14:40-22:27

2 stops36h 47m

Portland

Sat 10/1

05:30-20:10

2 stops57h 40m

£683

EdinburghPortland

EDI - PWM

EDIPWM

Edinburgh Turnhouse

Wed 18/2

09:25-18:56

2 stops14h 31m

Portland

Sun 22/2

05:45-15:00

2 stops28h 15m

£698

ManchesterPortland

MAN - PWM

MANPWM

Manchester

Mon 19/1

09:40-22:54

3 stops18h 14m

Portland

Mon 26/1

15:58-14:00

2 stops17h 02m

£699

ManchesterPortland

MAN - PWM

MANPWM

Manchester

Mon 19/1

13:00-13:45

1 stop29h 45m

Portland

Mon 26/1

14:35-10:10

2 stops14h 35m

£702

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

£704

Flights are sorted by cheapest return flights first.

Deals found on 6/12

Showing 1-10 of 24 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 £109). Flying from United Kingdom to Portland, Maine in November is currently the most expensive (average of £313). 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

1,432 reviews

Check prices

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

1,432 reviews

KLM

7.7

Good

1,432 reviews

Check prices

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

1,334 reviews

KLM

7.7

Good

1,432 reviews

Check prices

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

675 reviews

KLM

7.7

Good

1,432 reviews

Check prices

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

9,066 reviews

KLM

7.7

Good

1,432 reviews

Check prices

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

2,897 reviews

KLM

7.7

Good

1,432 reviews

Check prices

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

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, American Airlines, and Delta fly from United Kingdom to Portland, Maine in about 16h 26m. The time it takes to get you to your destination can typically vary by up to 13h 19m. 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 £109). Flying from United Kingdom to Portland, Maine in November is currently the most expensive (average of £313). 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

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Alternative routes for United Kingdom to Portland

Heathrow to Boston flights

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London City to Boston flights

Stansted to Boston flights

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Belfast Intl to Boston flights

Southend to Boston flights

Belfast City to Boston flights

Inverness to Boston flights

Leeds to Boston flights

Heathrow to Portland flights

Newquay to Boston flights

Cardiff to Boston flights

Bristol to Boston flights

Darlington to Boston flights

Athens to Boston flights

Southampton to Boston flights

Liverpool to Boston flights

Heathrow to Bangor flights

Newcastle upon Tyne to Portland flights

Manchester to Portland flights

Vicenza to Boston flights

Edinburgh to Portland flights

Amsterdam to Boston flights

Madrid to Boston flights

Norwich to Boston flights

Charles de Gaulle to Boston flights

Munich to Boston flights

East Midlands to Boston flights

Istanbul to Boston flights

Barcelona-El Prat to Boston flights

Doncaster to Boston flights

Direct flights to United States

Top 8 airlines flying from United Kingdom to Portland

Airline	Cheapest	Average	Flexibility	On-time
JetBlue	Cheapest£401	Average£531	FlexibilityNo cancel fee	On-time62%	Search JetBlue flights
Virgin Atlantic	Cheapest£474	Average£672	FlexibilityNo cancel fee	On-time72%	Search Virgin Atlantic flights
Finnair	Cheapest£475	Average£620	FlexibilityNo cancel fee	On-time76%	Search Finnair flights
Icelandair	Cheapest£493	Average£647	FlexibilityNo cancel fee	On-time76%	Search Icelandair flights
KLM	Cheapest£503	Average£692	FlexibilityNo cancel fee	On-time75%	Search KLM flights
Lufthansa	Cheapest£516	Average£927	FlexibilityNo cancel fee	On-time76%	Search Lufthansa flights
United Airlines	Cheapest£560	Average£741	FlexibilityNo cancel fee	On-time69%	Search United Airlines flights
Aer Lingus	Cheapest£622	Average£899	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!

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Cheap flights from the United Kingdom to Portland, Maine from £364

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 31/1. 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

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 6 December 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 6 December 2025.

Find 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 6 December 2025.

Round-trip from

One-way from

Popular in

Cheapest in

Average price

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 6 December 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 8 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?

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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 6 December 2025.