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Cheap flights from Portland to London from £472

This is the cheapest return flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 17/4. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
PWM — LON
9 Mar — 16 Mar1
1 adult
Sat 9/3
Sat 16/3

Cheap flight deals from Portland to London

Discover tips and strategies to find the most affordable flight options for your journey from Portland (PWM) to London (LON). 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 4 March 2024.

Popular in

June

Cheapest in

April

Average price

£573

Round-trip from

£59
High demand for flights, 30% potential price rise
Best time to find cheap flights, 28% potential price drop
Average for round-trip flights in March 2024
From Portland to London (LON)

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

Flights from Portland, Maine to London lean towards being more expensive in June. Prices are generally better when you fly from Portland, Maine to London in April, with the cheapest ticket starting at £477.

When is the cheapest time to fly from Portland, Maine to London (PWM - LON)?

When flying from Portland, Maine to London, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Cheap Delta flights from Portland to London

Explore cheap flight options specifically provided by Delta for the route between Portland and London. Find affordable fares and compare prices with other airlines to secure the best deal for your journey. Over the last 7 days, Cheapflights users made 931,334 searches. Data last updated 4 March 2024.
Consider these cheap Delta flights we've found departing from Portland to London. Come back soon if you're not finding the exact deal you're looking for.
Wed 17/414:55PWM - LHR
1 stop10h 50mDelta
Thu 25/411:45LHR - PWM
2 stops17h 10mDelta
Deal found 3/3£472
Thu 18/405:25PWM - LHR
1 stop9h 45mDelta
Thu 25/409:00LHR - PWM
2 stops19h 44mDelta
Deal found 3/3£511
Tue 7/505:31PWM - LHR
1 stop9h 39mDelta
Fri 17/511:45LHR - PWM
2 stops17h 12mDelta
Deal found 3/3£555
Fri 26/414:55PWM - LHR
1 stop10h 50mDelta
Tue 30/410:50LHR - PWM
1 stop18h 05mDelta
Deal found 2/3£570
Sat 20/405:25PWM - LHR
1 stop9h 45mDelta
Sat 27/409:20LHR - PWM
2 stops19h 24mDelta
Deal found 3/3£656
Fri 26/414:55PWM - LGW
1 stop14h 05mDelta
Tue 30/412:00LGW - PWM
1 stop16h 55mDelta
Deal found 3/3£679
Fri 26/405:00PWM - LGW
2 stops24h 00mDelta
Tue 30/412:00LGW - PWM
1 stop16h 55mDelta
Deal found 3/3£683
Thu 11/405:25PWM - LHR
1 stop9h 45mDelta
Mon 22/408:40LHR - PWM
2 stops20h 04mDelta
Deal found 3/3£725
Fri 12/405:25PWM - LHR
1 stop9h 45mDelta
Sun 21/413:55LHR - PWM
1 stop15h 00mDelta
Deal found 3/3£818

Cheap United Airlines flights from Portland to London

Explore cheap flight options specifically provided by United Airlines for the route between Portland and London. Find affordable fares and compare prices with other airlines to secure the best deal for your journey. Over the last 7 days, Cheapflights users made 931,334 searches. Data last updated 4 March 2024.
Take a gander at the lowest prices we've found on United Airlines flights from Portland to London. Deals are refreshing constantly so come back soon for more options.
Fri 26/415:10PWM - LHR
1 stop11h 00mUnited Airlines
Tue 30/409:30LHR - PWM
2 stops14h 46mUnited Airlines
Deal found 2/3£573
Fri 26/414:25PWM - LHR
1 stop11h 20mUnited Airlines
Tue 30/408:30LHR - PWM
2 stops17h 52mUnited Airlines
Deal found 3/3£574
Tue 2/406:05PWM - LHR
1 stop9h 35mUnited Airlines
Tue 9/406:50LHR - PWM
2 stops17h 26mUnited Airlines
Deal found 3/3£605
Tue 2/406:05PWM - LHR
1 stop9h 35mUnited Airlines
Tue 9/408:00LHR - PWM
1 stop10h 39mUnited Airlines
Deal found 3/3£611
Tue 2/414:25PWM - LHR
2 stops12h 55mUnited Airlines
Tue 9/412:15LHR - PWM
2 stops14h 07mUnited Airlines
Deal found 3/3£615
Tue 7/511:45PWM - LHR
2 stops14h 00mUnited Airlines
Fri 17/506:50LHR - PWM
2 stops19h 58mUnited Airlines
Deal found 3/3£634
Thu 4/406:05PWM - LHR
1 stop9h 35mUnited Airlines
Tue 9/406:50LHR - PWM
2 stops17h 26mUnited Airlines
Deal found 3/3£664
Thu 4/414:25PWM - LHR
2 stops12h 55mUnited Airlines
Tue 9/406:50LHR - PWM
2 stops17h 26mUnited Airlines
Deal found 3/3£667
Thu 4/406:05PWM - LHR
1 stop9h 35mUnited Airlines
Tue 9/408:00LHR - PWM
1 stop10h 39mUnited Airlines
Deal found 3/3£671

Cheap Portland to London flights in March & April 2024

Find cheap flight options from Portland to London specifically for the months of March and April 2024. Explore affordable fares based on user searches. Over the last 7 days, Cheapflights users made 931,334 searches. Prices were last updated on 4 March 2024.
These are some of the best deals we've found on flights to London in 2024 at this time. For more flight deals, be sure to check back very soon.
Fri 8/313:25PWM - LGW
1 stop15h 35mMultiple Airlines
Sun 10/314:00LGW - PWM
1 stop24h 09mMultiple Airlines
Deal found 3/3£1,310
Fri 8/314:54PWM - LGW
2 stops13h 51mMultiple Airlines
Sun 10/314:00LGW - PWM
1 stop24h 09mMultiple Airlines
Deal found 3/3£1,400
Fri 8/306:00PWM - LHR
2 stops19h 30mUnited Airlines
Sun 10/308:30LHR - PWM
2 stops17h 08mUnited Airlines
Deal found 3/3£1,431
Fri 8/314:11PWM - LHR
1 stop11h 29mDelta
Sun 10/308:40LHR - PWM
2 stops19h 16mDelta
Deal found 3/3£1,431
Fri 8/305:19PWM - LHR
1 stop9h 36mDelta
Sun 10/312:30LHR - PWM
1 stop15h 26mDelta
Deal found 3/3£1,437
Fri 8/312:00PWM - LGW
3 stops17h 25mMultiple Airlines
Sun 10/314:00LGW - PWM
1 stop24h 09mMultiple Airlines
Deal found 3/3£1,491
Thu 28/314:36PWM - LHR
1 stop12h 04mDelta
Thu 4/411:45LHR - PWM
2 stops17h 21mDelta
Deal found 3/3£1,501
Thu 28/314:36PWM - LHR
1 stop12h 04mDelta
Thu 4/416:20LHR - PWM
1 stop12h 46mDelta
Deal found 3/3£1,506
Thu 28/314:24PWM - LHR
2 stops14h 56mUnited Airlines
Thu 4/412:15LHR - PWM
2 stops14h 07mUnited Airlines
Deal found 3/3£1,546

Portland to London 2024 flight deals

Discover exclusive flight deals for travel between Portland and London in 2024. Find excellent offers based on user searches. Over the last 7 days, Cheapflights users made 931,334 searches. Data last updated 4 March 2024.
These are some of the best deals we've found on flights to London in 2024 at this time. For more flight deals, be sure to check back very soon.
Wed 17/414:55PWM - LHR
1 stop10h 50mDelta
Thu 25/411:45LHR - PWM
2 stops17h 10mDelta
Deal found 3/3£472
Wed 17/416:07PWM - LHR
1 stop9h 33mMultiple Airlines
Tue 23/413:40LHR - PWM
1 stop13h 31mMultiple Airlines
Deal found 3/3£475
Thu 18/405:25PWM - LHR
1 stop9h 45mDelta
Thu 25/409:00LHR - PWM
2 stops19h 44mDelta
Deal found 3/3£511
Thu 18/416:07PWM - LHR
1 stop9h 33mMultiple Airlines
Thu 25/413:40LHR - PWM
1 stop13h 31mMultiple Airlines
Deal found 3/3£514
Wed 2/1017:29PWM - LHR
2 stops12h 46mAmerican Airlines
Sun 6/1013:10LHR - PWM
1 stop13h 38mAmerican Airlines
Deal found 3/3£518
Tue 16/416:07PWM - LHR
1 stop9h 33mMultiple Airlines
Tue 23/413:40LHR - PWM
1 stop13h 31mMultiple Airlines
Deal found 3/3£554
Tue 7/505:31PWM - LHR
1 stop9h 39mDelta
Fri 17/511:45LHR - PWM
2 stops17h 12mDelta
Deal found 3/3£555
Tue 7/515:41PWM - LHR
1 stop9h 59mMultiple Airlines
Fri 17/513:40LHR - PWM
1 stop14h 01mMultiple Airlines
Deal found 3/3£558
Fri 26/414:55PWM - LHR
1 stop10h 50mDelta
Tue 30/410:50LHR - PWM
1 stop18h 05mDelta
Deal found 2/3£570

One-way flights to London from Portland

Search for one-way flight options from Portland to London. Find affordable one-way fares based on user searches. Compare prices and availability to plan your one-way journey according to your preferred dates and budget. Over the last 7 days, Cheapflights users made 931,334 searches. Data last updated 4 March 2024.
If you're seeking multiple options on one-way flights from Portland to London, be sure to check out these deals, which are updated often. Those needing a return flight from Portland to London can use the search form above.
Sun 7/712:04PWM - LHR
1 stop29h 06mAmerican Airlines
Deal found 3/3£475
Sun 7/717:29PWM - LHR
2 stops20h 26mAmerican Airlines
Deal found 3/3£533
Sun 7/713:27PWM - LGW
2 stops37h 43mMultiple Airlines
Deal found 3/3£651
Sun 7/711:30PWM - LGW
1 stop15h 25mJetBlue
Deal found 3/3£703
Sun 7/713:27PWM - LCY
2 stops21h 58mMultiple Airlines
Deal found 3/3£715
Sun 7/713:27PWM - SEN
3 stops25h 18mMultiple Airlines
Deal found 3/3£782
Sun 7/717:55PWM - LGW
3 stops21h 25mMultiple Airlines
Deal found 3/3£912
Sun 7/711:35PWM - LHR
3 stops17h 25mAir Canada
Deal found 3/3£968

Find flights from Portland to London within your budget

Customise your flight search to find flights from Portland to London 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 931,334 searches. Data last updated 4 March 2024.

Fly from

Any airport

Fly to

Any airport

Budget

£472 - £726

Route

Depart

Return

Price

PortlandLondon Heathrow

PWM - LHR

PWMLHR

Portland

Wed 17/4

1 stop10h 50m

London Heathrow

Thu 25/4

2 stops17h 10m

£472

PortlandLondon Heathrow

PWM - LHR

PWMLHR

Portland

Wed 17/4

1 stop9h 33m

London Heathrow

Tue 23/4

1 stop13h 31m

£475

PortlandLondon Heathrow

PWM - LHR

PWMLHR

Portland

Thu 18/4

1 stop9h 45m

London Heathrow

Thu 25/4

2 stops19h 44m

£511

PortlandLondon Heathrow

PWM - LHR

PWMLHR

Portland

Thu 18/4

1 stop9h 33m

London Heathrow

Thu 25/4

1 stop13h 31m

£514

PortlandLondon Heathrow

PWM - LHR

PWMLHR

Portland

Fri 26/4

1 stop11h 00m

London Heathrow

Tue 30/4

2 stops14h 46m

£573

PortlandLondon Heathrow

PWM - LHR

PWMLHR

Portland

Sun 21/4

3 stops19h 25m

London Heathrow

Mon 29/4

3 stops21h 57m

£579

PortlandLondon Heathrow

PWM - LHR

PWMLHR

Portland

Fri 19/4

1 stop19h 50m

London Heathrow

Fri 26/4

2 stops18h 21m

£633

PortlandLondon Gatwick

PWM - LGW

PWMLGW

Portland

Thu 18/4

1 stop14h 05m

London Gatwick

Fri 26/4

1 stop16h 55m

£652

PortlandLondon Gatwick

PWM - LGW

PWMLGW

Portland

Mon 5/8

1 stop15h 25m

London Gatwick

Mon 12/8

1 stop11h 32m

£726

Flights are sorted by cheapest first

Deals found on 3/3

Average price of flights to London by month

Plan your trip from Portland to London by taking into account the cheapest months to travel. The average price of a one-way flight from Portland to London is currently £717 while a return flight costs £570. Price data was last updated on 25 February 2024.

Currently, January is the cheapest month in which you can book a flight from Portland, Maine to London (average of £111). Flying from Portland, Maine to London in July is currently the most expensive (average of £177). 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.

January

£88

February

£99

March

£92

April

£107

May

£114

June

£132

July

£140

August

£109

September

£109

October

£126

November

£90

December

£93

Temperature and rainfall in London by month

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

LON

Temperature

4 - 17 °C

Reviews of airlines servicing London

Get insights into the airlines that provide service to London. 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 London. Reviews last updated 4 March 2024.
Get a feel of what it's like to fly with Delta, United Airlines and Air Canada from Portland to London by reading reviews from past customers. In addition to providing an overall rating, users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
8.1
Very Good
11,764 reviews

Food

7.5

Entertainment

8.1

Boarding

8.2

Overall

8.1

Crew

8.6

Comfort

7.9

Reviews

1 / 10

It was a good experience other than a short delay.

8.1
Very Good
11,764 reviews
8.1
Very Good
11,764 reviews

Food

7.5

Entertainment

8.1

Boarding

8.2

Overall

8.1

Crew

8.6

Comfort

7.9

Reviews

1 / 10

It was a good experience other than a short delay.

7.8
Good
1,758 reviews
8.1
Very Good
11,764 reviews

Food

7.5

Entertainment

8.1

Boarding

8.2

Overall

8.1

Crew

8.6

Comfort

7.9

Reviews

1 / 10

It was a good experience other than a short delay.

7.7
Good
5,121 reviews
8.1
Very Good
11,764 reviews

Food

7.5

Entertainment

8.1

Boarding

8.2

Overall

8.1

Crew

8.6

Comfort

7.9

Reviews

1 / 10

It was a good experience other than a short delay.

7.7
Good
1,155 reviews
8.1
Very Good
11,764 reviews

Food

7.5

Entertainment

8.1

Boarding

8.2

Overall

8.1

Crew

8.6

Comfort

7.9

Reviews

1 / 10

It was a good experience other than a short delay.

7.6
Good
1,962 reviews
8.1
Very Good
11,764 reviews

Food

7.5

Entertainment

8.1

Boarding

8.2

Overall

8.1

Crew

8.6

Comfort

7.9

Reviews

1 / 10

It was a good experience other than a short delay.

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?

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 flights from Portland, Maine to London for under £500 on Cheapflights?

Yes, there are multiple flights from Portland, Maine to London for under £500. The cheapest flight booked recently is on Delta for just £472, but on average you can expect to pay £567.

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 £472. Other airlines that can offer you cheap pricing are United Airlines, from £573, and Air Canada, from £579. Delta is currently priced 37% below the average price you’ll pay for this route.

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

£475 is the cheapest one-way deal found within the past few days, from American Airlines. You may also be able to find cheap deals on JetBlue and Air Canada, with prices starting from £703 and £968, respectively.

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

What does PWM to LHR mean?

Portland Airport is PWM and London Heathrow Airport is LHR. These codes are created by the International Air Transport Association (IATA) and airlines use them to identify the departing and arrival airports in the flight routes they service. London Gatwick Airport (LGW), London Stansted Airport (STN), London Luton Airport (LTN), London City Airport (LCY), London Southend Airport (SEN) are other airports near this flight route and their unique identifiers/IATA codes.

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

Search flights from Portland to London by cabin class

Find flights from Portland to London, based on your preferred cabin class, be it economy, premium economy, business, or first class.

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?

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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