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

Cheapflights users have booked flights from Portland, Maine to London round-trip from £539. Other airlines that can offer you cheap pricing are American Airlines, from £577, and United Airlines, from £589. JetBlue is currently priced 23% below the average price you’ll pay for this route.

What are the cheapest airlines to fly from Portland, Maine to London one-way?

£259 is the cheapest one-way deal found within the past few days, from JetBlue. You may also be able to find cheap deals on KLM and Air Canada, with prices starting from £355 and £378, respectively.

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

The most popular flight routes from Portland, Maine to London are Portland - London Heathrow, Portland - London Gatwick and Portland - London City.

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

Flights from Portland, Maine to London lean towards being more expensive in July. Prices are generally better when you fly from Portland, Maine to London in February, with the cheapest ticket starting at £494.

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

A simple way to save on the total cost of your ticket is to fly from Portland, Maine to London at midday. If you’re flexible enough to do this you can expect to save up to 6% on your trip compared to booking a flight in the morning.

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

Portland (PWM) is the airport you will fly out of if you book a flight from Portland to London. You should not have trouble finding flights to London from Portland; the airport handles an average of 0 outbound flights to London per day. You should also have plenty of airline options to choose from since 0 airlines have flights from the Portland airport to London. It is only a 2.9 mi journey to Portland (PWM) from Portland’s city center.

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

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

How can I find direct flights from Portland to London?

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

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

Yes. Cheapflights offers flight deals from Portland to London by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

£259+ Flights from Portland, Maine to London

Cheap flight deals from Portland to London

Round-trip from	£539
One-way from	£259
Popular in	July
Cheapest in	February
Average price	£778

JetBlue
20/4-29/4
2 total stops
24h 20m total
Portland to London

Search Deals

JetBlue
20/4
1 total stop
10h 55m total
Portland to London

Search Deals

Highest demand for flights based on searches. 23% potential increase in price (£177 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 4% potential price decrease (£23 potential savings vs. average return price).

Search Deals

Average for round-trip flights in January 2025

Search Deals

Find flight deals from Portland to London

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

Tue 30/917:50PWM - LHR

1 stop10h 40mJetBlue

Sun 12/1008:15LHR - PWM

1 stop13h 40mJetBlue

Deal found 21/1£473

Wed 5/312:49PWM - LHR

1 stop12h 46mAmerican Airlines

Wed 12/309:50LHR - PWM

2 stops17h 07mAmerican Airlines

Deal found 21/1£577

Wed 12/1106:00PWM - LHR

1 stop9h 35mUnited Airlines

Tue 18/1114:30LHR - PWM

2 stops33h 54mUnited Airlines

Deal found 22/1£586

Wed 12/1116:18PWM - LHR

1 stop12h 02mMultiple Airlines

Tue 18/1113:10LHR - PWM

1 stop14h 18mMultiple Airlines

Deal found 22/1£595

Wed 5/315:04PWM - LHR

1 stop15h 06mKLM

Wed 12/310:10LHR - PWM

1 stop18h 00mKLM

Deal found 21/1£601

Tue 22/414:35PWM - LHR

1 stop10h 50mDelta

Tue 29/411:00LHR - PWM

1 stop17h 10mDelta

Deal found 21/1£603

Tue 30/919:15PWM - LHR

2 stops32h 20mAir Canada

Fri 10/1014:05LHR - PWM

2 stops38h 12mAir Canada

Deal found 21/1£612

Wed 26/315:00PWM - LHR

2 stops14h 20mScandinavian Airlines

Sat 29/315:35LHR - PWM

2 stops36h 40mScandinavian Airlines

Deal found 21/1£710

Thu 15/514:35PWM - LCY

2 stops13h 55mDelta

Thu 22/509:20LCY - PWM

2 stops19h 18mDelta

Deal found 21/1£845

Sun 13/410:08PWM - LGW

1 stop18h 52mMultiple Airlines

Mon 14/412:40LGW - PWM

2 stops33h 47mMultiple Airlines

Deal found 22/1£944

Sat 7/614:35PWM - LGW

1 stop14h 25mDelta

Sat 14/612:00LGW - PWM

1 stop16h 45mDelta

Deal found 21/1£979

Wed 10/917:50PWM - LGW

2 stops41h 25mTurkish Airlines

Wed 24/922:40LGW - PWM

2 stops39h 47mTurkish Airlines

Deal found 21/1£1,056

Best flights from Portland to London
Discover carefully curated flight deals from Portland to London that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 22 January 2025.

Sun 20/417:35PWM - LHR

1 stop10h 55mJetBlue

Tue 29/408:15LHR - PWM

1 stop13h 25mJetBlue

Deal found 21/1£539

Wed 5/312:49PWM - LHR

1 stop12h 46mAmerican Airlines

Wed 12/309:50LHR - PWM

2 stops17h 07mAmerican Airlines

Deal found 21/1£577

Sun 20/416:15PWM - LHR

1 stop14h 30mUnited Airlines

Tue 29/413:45LHR - PWM

2 stops14h 42mUnited Airlines

Deal found 21/1£589

Wed 5/315:04PWM - LHR

1 stop15h 06mKLM

Wed 12/310:10LHR - PWM

1 stop18h 00mKLM

Deal found 21/1£601

Wed 5/305:45PWM - LHR

1 stop19h 50mMultiple Airlines

Wed 12/313:10LHR - PWM

1 stop13h 47mMultiple Airlines

Deal found 20/1£602

Tue 22/414:35PWM - LHR

1 stop10h 50mDelta

Tue 29/411:00LHR - PWM

1 stop17h 10mDelta

Deal found 21/1£603

Wed 5/306:01PWM - LHR

3 stops19h 29mAir Canada

Wed 12/318:00LHR - PWM

3 stops28h 39mAir Canada

Deal found 21/1£692

Wed 26/315:00PWM - LHR

2 stops14h 20mScandinavian Airlines

Sat 29/315:35LHR - PWM

2 stops36h 40mScandinavian Airlines

Deal found 21/1£710

Wed 12/311:20PWM - LHR

1 stop15h 35mAustrian Airlines

Mon 17/319:25LHR - PWM

2 stops27h 14mAustrian Airlines

Deal found 21/1£1,196

Sun 20/417:35PWM - LGW

2 stops35h 20mTurkish Airlines

Sat 26/422:40LGW - PWM

2 stops53h 20mTurkish Airlines

Deal found 21/1£1,204

Thu 15/514:35PWM - LCY

2 stops13h 55mDelta

Thu 22/509:20LCY - PWM

2 stops19h 18mDelta

Deal found 21/1£845

Sun 13/410:08PWM - LGW

1 stop18h 52mMultiple Airlines

Mon 14/412:40LGW - PWM

2 stops33h 47mMultiple Airlines

Deal found 22/1£944

One-way flights from Portland to London
Search for one-way flight options from Portland to London. Find affordable one-way fares based on user searches. Data last updated 22 January 2025.

Sun 20/417:35PWM - LHR

1 stop10h 55mJetBlue

Deal found 21/1£259

Fri 9/521:29PWM - LGW

1 stop31h 31mMultiple Airlines

Deal found 21/1£307

Wed 23/414:35PWM - LHR

1 stop12h 30mKLM

Deal found 21/1£355

Sun 2/307:15PWM - LHR

3 stops48h 35mMultiple Airlines

Deal found 21/1£359

Sun 2/306:01PWM - LHR

2 stops33h 34mAir Canada

Deal found 21/1£378

Sat 19/418:42PWM - LHR

1 stop31h 13mUnited Airlines

Deal found 21/1£395

Sun 2/315:55PWM - LCY

2 stops15h 55mMultiple Airlines

Deal found 21/1£415

Wed 9/714:35PWM - LGW

1 stop14h 25mDelta

Deal found 21/1£430

Wed 23/417:15PWM - LCY

2 stops18h 25mDelta

Deal found 21/1£434

Fri 9/514:35PWM - LHR

2 stops18h 00mScandinavian Airlines

Deal found 21/1£473

Fri 9/517:50PWM - LGW

2 stops16h 50mTAP AIR PORTUGAL

Deal found 21/1£487

Tue 22/417:35PWM - SEN

3 stops38h 20mMultiple Airlines

Deal found 21/1£549

Find flights from Portland to London within your budget

Fly from

Fly to

Route

Depart

Return

Price

PortlandLondon

PWM - LHR

PWMLHR

Portland

Sun 20/4

17:35-09:30

1 stop10h 55m

London Heathrow

Tue 29/4

08:15-16:40

1 stop13h 25m

£539

PortlandLondon

PWM - LHR

PWMLHR

Portland

Wed 5/3

12:49-06:35

1 stop12h 46m

London Heathrow

Wed 12/3

09:50-22:57

2 stops17h 07m

£577

PortlandLondon

PWM - LHR

PWMLHR

Portland

Sun 20/4

16:15-11:45

1 stop14h 30m

London Heathrow

Tue 29/4

13:45-23:27

2 stops14h 42m

£589

PortlandLondon

PWM - LHR

PWMLHR

Portland

Wed 5/3

15:04-11:10

1 stop15h 06m

London Heathrow

Wed 12/3

10:10-00:10

1 stop18h 00m

£601

PortlandLondon

PWM - LHR

PWMLHR

Portland

Wed 5/3

05:45-06:35

1 stop19h 50m

London Heathrow

Wed 12/3

13:10-22:57

1 stop13h 47m

£602

PortlandLondon

PWM - LHR

PWMLHR

Portland

Tue 22/4

14:35-06:25

1 stop10h 50m

London Heathrow

Tue 29/4

11:00-23:10

1 stop17h 10m

£603

PortlandLondon

PWM - LHR

PWMLHR

Portland

Wed 5/3

06:01-06:30

3 stops19h 29m

London Heathrow

Wed 12/3

18:00-18:39

3 stops28h 39m

£692

PortlandLondon

PWM - LHR

PWMLHR

Portland

Wed 26/3

15:00-09:20

2 stops14h 20m

London Heathrow

Sat 29/3

15:35-00:15

2 stops36h 40m

£710

PortlandLondon

PWM - LCY

PWMLCY

Portland

Thu 15/5

14:35-09:30

2 stops13h 55m

London City

Thu 22/5

09:20-23:38

2 stops19h 18m

£845

PortlandLondon

PWM - LGW

PWMLGW

Portland

Sun 13/4

10:08-10:00

1 stop18h 52m

London Gatwick

Mon 14/4

12:40-17:27

2 stops33h 47m

£944

Flights are sorted by cheapest return flights first.

Deals found on 21/1

Showing 1-10 of 26 results

Best time to book a flight from Portland to London

Have a flexible travel schedule? Discover the best time to fly to London from Portland 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.

Travel insights for flights from Portland to London

Get recent, data-driven insights about flights from Portland to London including ideal travel times, pricing trends, and more.

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

Currently, January is the cheapest month in which you can book a flight from Portland, Maine to London (average of £112). Flying from Portland, Maine to London in August is currently the most expensive (average of £161). 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.

Rainfall in London by month

In terms of precipitation, rainfall in London ranges from 40.0 - 70.0 inches per month. January is typically the wettest month, when rainfall can reach 70.0 mm. July is typically the driest time to visit London when rainfall is around 40.0 mm.

Temperature in London by month

If weather is an important factor for your trip to London, 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 17.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 4.0 C).

Reviews of airlines servicing London

Delta

8.0

Very Good

8,521 reviews

Check prices

Reviews

1 / 10

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Delta

8.0

Very Good

8,521 reviews

Delta

8.0

Very Good

8,521 reviews

Check prices

Reviews

1 / 10

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

KLM

7.8

Good

1,341 reviews

Delta

8.0

Very Good

8,521 reviews

Check prices

Reviews

1 / 10

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Austrian Airlines

7.6

Good

786 reviews

Delta

8.0

Very Good

8,521 reviews

Check prices

Reviews

1 / 10

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

JetBlue

7.4

Good

3,200 reviews

Delta

8.0

Very Good

8,521 reviews

Check prices

Reviews

1 / 10

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

United Airlines

7.4

Good

8,984 reviews

Delta

8.0

Very Good

8,521 reviews

Check prices

Reviews

1 / 10

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Related info for your journey

What airport do you fly from for flights from Portland to London?
Portland (PWM) is the airport you will fly out of if you book a flight from Portland to London. You should not have trouble finding flights to London from Portland; the airport handles an average of 0 outbound flights to London per day. You should also have plenty of airline options to choose from since 0 airlines have flights from the Portland airport to London. It is only a 2.9 mi journey to Portland (PWM) from Portland’s city center.
What are the cheapest airlines flying from Portland, Maine to London round-trip?
Cheapflights users have booked flights from Portland, Maine to London round-trip from £539. Other airlines that can offer you cheap pricing are American Airlines, from £577, and United Airlines, from £589. JetBlue is currently priced 23% below the average price you’ll pay for this route.
What are the cheapest airlines to fly from Portland, Maine to London one-way?
£259 is the cheapest one-way deal found within the past few days, from JetBlue. You may also be able to find cheap deals on KLM and Air Canada, with prices starting from £355 and £378, respectively.
What are the most popular routes from Portland, Maine to London?
The most popular flight routes from Portland, Maine to London are Portland - London Heathrow, Portland - London Gatwick and Portland - London City.
Can I find deals for flights from Portland to London that include hotel bookings?
Yes. In addition to deals on Portland to London flights, Cheapflights offers holiday packages that include both flights and hotel.
How can I find direct flights from Portland to London?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Portland to London.
Can I find deals for business class flights from Portland to London?
Yes. Cheapflights offers flight deals from Portland to London 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 Portland, Maine to London?
Currently, January is the cheapest month in which you can book a flight from Portland, Maine to London (average of £112). Flying from Portland, Maine to London in August is currently the most expensive (average of £161). 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.

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

Cheapflights helps you search for flights from Portland to London via 900+ travel sites so you don’t have to. After performing a flight search, users can also filter their flight selection by filtering for price, number of stops, airlines, and so on.

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

Cheapflights helps you find that perfect flight to London from Portland by searching from hundreds of airlines and agencies you know and love. We are also free to use, in case you were wondering!

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

Certainly. Search results for flights to London from Portland 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 Portland to London become cheaper?

Yes, Cheapflights offers price alerts on Portland to London flights so you can book your travel at the perfect time. Price Alerts can be enabled by clicking the bell icon next to the flight deals above and providing your email address where you want to receive the alerts.

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Cheap flights from Portland, Maine to London from £259

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 20/4. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from Portland to London

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Find flight deals from Portland to London

Cheapest flights from Portland to LondonExplore the most affordable flight options available from Portland to London. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 22 January 2025.

Explore the most affordable flight options available from Portland to London. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 22 January 2025.

Find flights from Portland to London within your budget

Best time to book a flight from Portland to London

Have a flexible travel schedule? Discover the best time to fly to London from Portland with our price prediction graph.

Travel insights for flights from Portland to London

Get recent, data-driven insights about flights from Portland to London including ideal travel times, pricing trends, and more.

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

Rainfall in London by month

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

Temperature in London by month

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

Reviews of airlines servicing London

Related info for your journey

Find useful and relevant information for your journey from Portland to London. 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 from for flights from Portland to London?

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

What are the cheapest airlines to fly from Portland, Maine to London one-way?

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

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

How can I find direct flights from Portland to London?

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

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

Travelling to a place near Portland?

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Alternative routes for Portland to London

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

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 Portland to London?

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

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

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

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Book with Flexibility

Travel Smart

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