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Cheap flights from Portland to London from £340

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 17/11. Fares are subject to change and may not be available on all flights or dates of travel.
PWM — LON
22 Oct — 29 Oct1
1 adult

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 17 October 2024.

Round-trip from

£508

One-way from

£340

Popular in

July

Cheapest in

February
12/11-19/11
  • 12/11-19/11
  • 4 total stops
  • 48h 04m total
  • Portland to London
United Airlines
  • United Airlines
  • 17/11
  • 1 total stop
  • 11h 57m total
  • Portland to London
High demand for flights, 31% potential price rise
Best time to find cheap flights, 25% potential price drop

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 17 October 2024.

Tue 12/1114:55PWM - LHR
2 stops25h 45mMultiple Airlines
Tue 19/1106:40LHR - PWM
2 stops22h 19mMultiple Airlines
Deal found 17/10£508
Sat 16/1116:40PWM - LHR
2 stops33h 30mAir Canada
Fri 22/1118:00LHR - PWM
2 stops29h 46mAir Canada
Deal found 17/10£546
Wed 20/1113:37PWM - LHR
2 stops13h 13mAmerican Airlines
Tue 26/1110:15LHR - PWM
1 stop17h 32mAmerican Airlines
Deal found 17/10£562
Sat 16/1106:00PWM - LHR
1 stop9h 35mUnited Airlines
Fri 22/1113:30LHR - PWM
2 stops15h 29mUnited Airlines
Deal found 17/10£585
Wed 20/1112:51PWM - LHR
1 stop12h 59mKLM
Tue 26/1114:30LHR - PWM
1 stop14h 17mKLM
Deal found 17/10£594
Sun 1/1206:00PWM - LCY
2 stops20h 15mDelta
Sun 8/1213:45LCY - PWM
2 stops15h 14mDelta
Deal found 17/10£632
Mon 23/1212:15PWM - LHR
1 stop26h 55mDelta
Fri 31/111:45LHR - PWM
2 stops16h 46mDelta
Deal found 17/10£659
Sat 16/1111:25PWM - LGW
3 stops18h 30mMultiple Airlines
Fri 22/1111:55LGW - PWM
3 stops29h 16mMultiple Airlines
Deal found 17/10£738
Fri 18/1008:10PWM - LHR
2 stops25h 55mTurkish Airlines
Mon 21/1016:40LHR - PWM
2 stops35h 18mTurkish Airlines
Deal found 17/10£764
Fri 18/1013:06PWM - LHR
1 stop15h 24mJetBlue
Mon 21/1011:55LHR - PWM
1 stop16h 03mJetBlue
Deal found 16/10£786
Fri 18/1008:10PWM - LGW
2 stops20h 40mTurkish Airlines
Mon 21/1017:15LGW - PWM
2 stops34h 43mTurkish Airlines
Deal found 16/10£812
Fri 18/1014:50PWM - LHR
3 stops20h 35mScandinavian Airlines
Mon 21/1006:40LHR - PWM
2 stops22h 50mScandinavian Airlines
Deal found 16/10£858

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 1,037,663 searches. Data last updated 17 October 2024.

Fly from

Any airport

Fly to

Any airport

Budget

£508 - £1,192

Route

Depart

Return

Price

PortlandLondon Heathrow

PWM - LHR

PWMLHR

Portland

Tue 12/11

2 stops25h 45m

London Heathrow

Tue 19/11

2 stops22h 19m

£508

PortlandLondon Heathrow

PWM - LHR

PWMLHR

Portland

Sat 16/11

2 stops33h 30m

London Heathrow

Fri 22/11

2 stops29h 46m

£546

PortlandLondon Heathrow

PWM - LHR

PWMLHR

Portland

Tue 21/1

1 stop10h 05m

London Heathrow

Tue 28/1

2 stops14h 22m

£555

PortlandLondon Heathrow

PWM - LHR

PWMLHR

Portland

Wed 20/11

2 stops13h 13m

London Heathrow

Tue 26/11

1 stop17h 32m

£562

PortlandLondon Heathrow

PWM - LHR

PWMLHR

Portland

Tue 21/1

1 stop12h 20m

London Heathrow

Tue 28/1

1 stop18h 21m

£566

PortlandLondon City

PWM - LCY

PWMLCY

Portland

Sun 1/12

2 stops20h 15m

London City

Sun 8/12

2 stops15h 14m

£632

PortlandLondon Heathrow

PWM - LHR

PWMLHR

Portland

Mon 23/12

1 stop26h 55m

London Heathrow

Tue 28/1

2 stops16h 46m

£659

PortlandLondon Gatwick

PWM - LGW

PWMLGW

Portland

Sat 16/11

3 stops18h 30m

London Gatwick

Fri 22/11

3 stops29h 16m

£738

PortlandLondon City

PWM - LCY

PWMLCY

Portland

Sun 1/12

2 stops16h 33m

London City

Sun 8/12

3 stops28h 20m

£935

PortlandLondon Heathrow

PWM - LHR

PWMLHR

Portland

Sun 22/12

1 stop14h 19m

London Heathrow

Sat 1/2

1 stop11h 30m

£1,100

PortlandLondon Heathrow

PWM - LHR

PWMLHR

Portland

Mon 23/12

2 stops16h 05m

London Heathrow

Wed 29/1

2 stops21h 51m

£1,192

Flights are sorted by cheapest first

Deals found on 17/10

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 July is currently the most expensive (average of £159). 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

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

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

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 17 October 2024.
8.0
Very Good
8,911 reviews

Food

7.4

Crew

8.6

Comfort

7.9

Overall

8.0

Boarding

8.2

Entertainment

8.0

Reviews

1 / 10

Overall it was good on the flight. Before the flight with checking the bag at JFK was a nightmare. It took way too long and the Delta concierge was very rude to everyone. But other than that it was fine.

8.0
Very Good
8,911 reviews
8.0
Very Good
8,911 reviews

Food

7.4

Crew

8.6

Comfort

7.9

Overall

8.0

Boarding

8.2

Entertainment

8.0

Reviews

1 / 10

Overall it was good on the flight. Before the flight with checking the bag at JFK was a nightmare. It took way too long and the Delta concierge was very rude to everyone. But other than that it was fine.

7.8
Good
1,361 reviews
8.0
Very Good
8,911 reviews

Food

7.4

Crew

8.6

Comfort

7.9

Overall

8.0

Boarding

8.2

Entertainment

8.0

Reviews

1 / 10

Overall it was good on the flight. Before the flight with checking the bag at JFK was a nightmare. It took way too long and the Delta concierge was very rude to everyone. But other than that it was fine.

7.7
Good
844 reviews
8.0
Very Good
8,911 reviews

Food

7.4

Crew

8.6

Comfort

7.9

Overall

8.0

Boarding

8.2

Entertainment

8.0

Reviews

1 / 10

Overall it was good on the flight. Before the flight with checking the bag at JFK was a nightmare. It took way too long and the Delta concierge was very rude to everyone. But other than that it was fine.

7.4
Good
9,313 reviews
8.0
Very Good
8,911 reviews

Food

7.4

Crew

8.6

Comfort

7.9

Overall

8.0

Boarding

8.2

Entertainment

8.0

Reviews

1 / 10

Overall it was good on the flight. Before the flight with checking the bag at JFK was a nightmare. It took way too long and the Delta concierge was very rude to everyone. But other than that it was fine.

7.3
Good
1,306 reviews
8.0
Very Good
8,911 reviews

Food

7.4

Crew

8.6

Comfort

7.9

Overall

8.0

Boarding

8.2

Entertainment

8.0

Reviews

1 / 10

Overall it was good on the flight. Before the flight with checking the bag at JFK was a nightmare. It took way too long and the Delta concierge was very rude to everyone. But other than that it was fine.

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 £600 on Cheapflights?

    Yes, there are multiple flights from Portland, Maine to London for under £600. The cheapest flight booked recently is on Multiple Airlines for just £508, but on average you can expect to pay £726.

  • 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 £546. Other airlines that can offer you cheap pricing are United Airlines, from £555, and American Airlines, from £562. Air Canada is currently priced 16% below the average price you’ll pay for this route.

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

    £340 is the cheapest one-way deal found within the past few days, from United Airlines. You may also be able to find cheap deals on Air Canada and Delta, with prices starting from £355 and £392, 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.

  • Can I find deals for flights from Portland to London that include extra baggage allowance?

    The amount of baggage you can bring on your Portland to London flight depends on the airline and the type of fare you've chosen. After entering your flight details, you'll be able to view the specific baggage policies for each deal in the search results. Keep in mind that certain deals may offer additional baggage allowance.

  • Can I find deals on flights from Portland to London with specific airlines?

    Yes, Cheapflights allows you to browse and filter Portland to London flight deals by airline. After entering your origin and destination, use the available filters to view flights offered by airlines.

  • 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.

  • Can I find deals for flights from Portland to London that allow pets onboard?

    Many airlines flying from Portland to London offer the option to travel with pets. After selecting a flight deal, you can find more information about the airline's pet policy on their official website or by contacting the airline directly. Please note that additional fees and restrictions may apply.

  • Can I find deals on last-minute flights from Portland to London?

    Yes, you can often find last-minute deals on Portland to London flights on Cheapflights. However, these deals can vary and may not always be available. We recommend checking back frequently or signing up for price alerts for the most up-to-date deals.

  • How recently were the Portland, Maine to London flight deals updated?

    The Portland, Maine to London flight deals you see on this page were last updated on 17/10.

  • 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 July is currently the most expensive (average of £159). 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

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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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