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Cheap flights from Portland to London from £441

This is the cheapest return flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 25/9. Fares are subject to change and may not be available on all flights or dates of travel.
PWM — LON
31 Jul — 7 Aug1
1 adult
Wed 31/7
Wed 7/8

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 26 July 2024.

Round-trip from

£441

Popular in

June

Cheapest in

February

Average price

£948
JetBlue
  • JetBlue
  • 25/9-8/10
  • 2 total stops
  • 31h 17m total
  • Portland to London
High demand for flights, 38% potential price rise
Best time to find cheap flights, 27% potential price drop
Average for round-trip flights in July 2024

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 February, with the cheapest ticket starting at £474.

What is the cheapest time of day to fly from PWM to 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 American Airlines flights from Portland to London

Explore cheap flight options specifically provided by American 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 1,000,913 searches. Data last updated 26 July 2024.
Consider these cheap American Airlines flights we've found departing from Portland to London. Come back soon if you're not finding the exact deal you're looking for.
Sat 5/1007:18PWM - LGW
2 stops19h 52mAmerican Airlines
Sat 12/1015:05LGW - PWM
2 stops25h 42mAmerican Airlines
Deal found 25/7£532
Thu 22/816:14PWM - LHR
1 stop10h 31mAmerican Airlines
Mon 26/808:10LHR - PWM
1 stop13h 49mAmerican Airlines
Deal found 25/7£607
Sun 11/817:30PWM - LHR
1 stop14h 15mAmerican Airlines
Sun 18/808:10LHR - PWM
1 stop13h 49mAmerican Airlines
Deal found 25/7£888

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 1,000,913 searches. Data last updated 26 July 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.
Tue 8/1016:52PWM - LHR
1 stop12h 18mUnited Airlines
Tue 22/1014:05LHR - PWM
2 stops25h 27mUnited Airlines
Deal found 25/7£458
Wed 25/919:25PWM - LHR
1 stop10h 15mUnited Airlines
Tue 8/1006:50LHR - PWM
2 stops16h 54mUnited Airlines
Deal found 25/7£468
Wed 25/912:28PWM - LHR
2 stops13h 17mUnited Airlines
Tue 8/1006:50LHR - PWM
2 stops16h 54mUnited Airlines
Deal found 25/7£472
Tue 27/806:00PWM - LHR
1 stop18h 55mUnited Airlines
Tue 3/915:50LHR - PWM
2 stops24h 41mUnited Airlines
Deal found 25/7£490
Thu 7/1113:31PWM - LHR
1 stop12h 09mUnited Airlines
Thu 14/1108:50LHR - PWM
2 stops19h 00mUnited Airlines
Deal found 25/7£503
Thu 5/916:52PWM - LHR
1 stop13h 53mUnited Airlines
Tue 17/906:50LHR - PWM
2 stops16h 44mUnited Airlines
Deal found 25/7£542
Thu 5/911:28PWM - LHR
2 stops14h 17mUnited Airlines
Tue 17/906:50LHR - PWM
2 stops16h 44mUnited Airlines
Deal found 25/7£546
Thu 22/806:00PWM - LHR
1 stop18h 55mUnited Airlines
Mon 26/806:50LHR - PWM
2 stops22h 09mUnited Airlines
Deal found 25/7£616
Thu 22/811:48PWM - LHR
2 stops13h 57mUnited Airlines
Mon 26/806:50LHR - PWM
2 stops22h 09mUnited Airlines
Deal found 25/7£620

Cheap Portland to London flights in July & August 2024

Find cheap flight options from Portland to London specifically for the months of July and August 2024. Explore affordable fares based on user searches. Over the last 7 days, Cheapflights users made 1,000,913 searches. Prices were last updated on 26 July 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.
Tue 27/806:15PWM - LHR
2 stops22h 45mAir Canada
Tue 3/909:30LHR - PWM
2 stops31h 01mAir Canada
Deal found 25/7£486
Tue 27/806:00PWM - LHR
1 stop18h 55mUnited Airlines
Tue 3/915:50LHR - PWM
2 stops24h 41mUnited Airlines
Deal found 25/7£490
Tue 27/814:09PWM - LHR
1 stop12h 56mKLM
Tue 3/910:50LHR - PWM
1 stop18h 20mKLM
Deal found 25/7£502
Tue 27/812:28PWM - LHR
3 stops16h 32mAir Canada
Tue 3/909:30LHR - PWM
2 stops14h 04mAir Canada
Deal found 25/7£508
Tue 27/811:28PWM - LHR
3 stops17h 32mAir Canada
Tue 3/918:00LHR - PWM
3 stops22h 31mAir Canada
Deal found 25/7£512
Sun 25/806:10PWM - LHR
1 stop9h 35mJetBlue
Sat 31/807:25LHR - PWM
1 stop16h 49mJetBlue
Deal found 25/7£520
Thu 22/816:14PWM - LHR
1 stop10h 31mAmerican Airlines
Mon 26/808:10LHR - PWM
1 stop13h 49mAmerican Airlines
Deal found 25/7£607
Thu 22/811:48PWM - LHR
2 stops13h 42mUnited Airlines
Mon 26/806:50LHR - PWM
2 stops22h 09mUnited Airlines
Deal found 26/7£616
Thu 22/811:48PWM - LHR
2 stops13h 57mUnited Airlines
Mon 26/806:50LHR - PWM
2 stops22h 09mUnited Airlines
Deal found 25/7£620

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 1,000,913 searches. Data last updated 26 July 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 25/913:06PWM - LGW
1 stop13h 49mJetBlue
Tue 8/1010:30LGW - PWM
1 stop17h 28mJetBlue
Deal found 25/7£441
Wed 25/914:52PWM - LGW
1 stop14h 08mDelta
Tue 8/1012:00LGW - PWM
2 stops16h 06mDelta
Deal found 25/7£450
Tue 8/1013:06PWM - LGW
1 stop13h 49mJetBlue
Tue 22/1010:30LGW - PWM
1 stop17h 28mJetBlue
Deal found 25/7£453
Tue 8/1016:52PWM - LHR
1 stop12h 18mUnited Airlines
Tue 22/1014:05LHR - PWM
2 stops25h 27mUnited Airlines
Deal found 25/7£458
Thu 5/913:06PWM - LGW
1 stop13h 49mJetBlue
Tue 17/910:30LGW - PWM
1 stop17h 28mJetBlue
Deal found 25/7£468
Wed 25/919:25PWM - LHR
1 stop10h 15mUnited Airlines
Tue 8/1006:50LHR - PWM
2 stops16h 54mUnited Airlines
Deal found 25/7£468
Wed 25/912:28PWM - LHR
2 stops13h 17mUnited Airlines
Tue 8/1006:50LHR - PWM
2 stops16h 54mUnited Airlines
Deal found 25/7£472
Wed 25/914:52PWM - LHR
1 stop12h 13mKLM
Tue 8/1017:50LHR - PWM
1 stop11h 40mKLM
Deal found 25/7£475
Sun 1/910:10PWM - LGW
1 stop16h 45mJetBlue
Fri 6/910:30LGW - PWM
1 stop17h 28mJetBlue
Deal found 25/7£480

Portland to London flights leaving soon

Find last-minute flight options from Portland to London for spontaneous travel. Discover available flights and compare prices based on user searches. Secure great deals and offers for spontaneous trips with quick booking options. Over the last 7 days, Cheapflights users made 1,000,913 searches. Data last updated 26 July 2024.
Have a look at some of the last-minute flights available departing from Portland to London. Users should examine the flight details to ensure there are no surprises.
Mon 5/814:09PWM - LGW
1 stop14h 51mDelta
Mon 12/812:00LGW - PWM
1 stop17h 10mDelta
Deal found 25/7£884
Mon 5/814:09PWM - LHR
1 stop12h 56mDelta
Mon 12/811:30LHR - PWM
2 stops17h 40mDelta
Deal found 25/7£907
Mon 5/812:47PWM - LHR
1 stop12h 58mKLM
Mon 12/810:50LHR - PWM
1 stop18h 20mKLM
Deal found 25/7£912
Mon 5/806:15PWM - LHR
2 stops19h 15mAir Canada
Mon 12/818:00LHR - PWM
2 stops29h 26mAir Canada
Deal found 25/7£956
Mon 5/811:35PWM - LHR
3 stops17h 25mAir Canada
Mon 12/818:00LHR - PWM
3 stops24h 51mAir Canada
Deal found 25/7£1,267
Mon 5/810:41PWM - LHR
3 stops16h 54mMultiple Airlines
Mon 12/809:30LHR - PWM
2 stops13h 56mMultiple Airlines
Deal found 25/7£1,418
Mon 5/809:45PWM - LGW
2 stops21h 00mMultiple Airlines
Mon 12/813:00LGW - PWM
2 stops15h 00mMultiple Airlines
Deal found 25/7£1,522
Mon 5/812:47PWM - LGW
2 stops16h 13mDelta
Mon 12/812:00LGW - PWM
1 stop17h 10mDelta
Deal found 25/7£1,637

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 1,000,913 searches. Data last updated 26 July 2024.

Fly from

Any airport

Fly to

Any airport

Budget

£441 - £866

Route

Depart

Return

Price

PortlandLondon Gatwick

PWM - LGW

PWMLGW

Portland

Wed 25/9

1 stop13h 49m

London Gatwick

Tue 8/10

1 stop17h 28m

£441

PortlandLondon Gatwick

PWM - LGW

PWMLGW

Portland

Wed 25/9

1 stop14h 08m

London Gatwick

Tue 8/10

2 stops16h 06m

£450

PortlandLondon Heathrow

PWM - LHR

PWMLHR

Portland

Tue 8/10

1 stop12h 18m

London Heathrow

Tue 22/10

2 stops25h 27m

£458

PortlandLondon Heathrow

PWM - LHR

PWMLHR

Portland

Wed 25/9

1 stop12h 13m

London Heathrow

Tue 8/10

1 stop11h 40m

£475

PortlandLondon Heathrow

PWM - LHR

PWMLHR

Portland

Tue 27/8

2 stops22h 45m

London Heathrow

Tue 3/9

2 stops31h 01m

£486

PortlandLondon Heathrow

PWM - LHR

PWMLHR

Portland

Wed 2/10

1 stop9h 41m

London Heathrow

Mon 7/10

1 stop14h 13m

£514

PortlandLondon Gatwick

PWM - LGW

PWMLGW

Portland

Sat 5/10

2 stops19h 52m

London Gatwick

Sat 12/10

2 stops25h 42m

£532

PortlandLondon Gatwick

PWM - LGW

PWMLGW

Portland

Wed 25/9

2 stops39h 55m

London Gatwick

Tue 8/10

2 stops16h 06m

£538

PortlandLondon Heathrow

PWM - LHR

PWMLHR

Portland

Sun 25/8

1 stop20h 35m

London Heathrow

Sat 31/8

2 stops21h 56m

£866

Flights are sorted by cheapest first

Deals found on 25/7

No data available for this route at this time. Please check back soon.

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.

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

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 26 July 2024.
Get a feel of what it's like to fly with American Airlines, 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.
8.0
Very Good
9,630 reviews

Comfort

7.9

Food

7.4

Entertainment

8.0

Boarding

8.2

Crew

8.6

Overall

8.0

Reviews

1 / 10

One of the worst flights ever. I got to the airport early for my 6:48 pm flight and tried to get on the 4:30 ish flight. The gate agent was one of the worst customer service people in my 20 yrs of flying Delta. Very rude and wouldn’t even talk to me about riding standby. Then flight took off 3 hrs late and when Landed in Atlanta, the gate people wouldn’t even try to get me on the plane. It was still there but door was closed. For all of my almost 2 million miles, the worst experience from Delta. I am highly disappointed as it was not my fault I have to sleep in Atlanta and not Jacksonville Florida

8.0
Very Good
9,630 reviews
8.0
Very Good
9,630 reviews

Comfort

7.9

Food

7.4

Entertainment

8.0

Boarding

8.2

Crew

8.6

Overall

8.0

Reviews

1 / 10

One of the worst flights ever. I got to the airport early for my 6:48 pm flight and tried to get on the 4:30 ish flight. The gate agent was one of the worst customer service people in my 20 yrs of flying Delta. Very rude and wouldn’t even talk to me about riding standby. Then flight took off 3 hrs late and when Landed in Atlanta, the gate people wouldn’t even try to get me on the plane. It was still there but door was closed. For all of my almost 2 million miles, the worst experience from Delta. I am highly disappointed as it was not my fault I have to sleep in Atlanta and not Jacksonville Florida

7.9
Good
1,417 reviews
8.0
Very Good
9,630 reviews

Comfort

7.9

Food

7.4

Entertainment

8.0

Boarding

8.2

Crew

8.6

Overall

8.0

Reviews

1 / 10

One of the worst flights ever. I got to the airport early for my 6:48 pm flight and tried to get on the 4:30 ish flight. The gate agent was one of the worst customer service people in my 20 yrs of flying Delta. Very rude and wouldn’t even talk to me about riding standby. Then flight took off 3 hrs late and when Landed in Atlanta, the gate people wouldn’t even try to get me on the plane. It was still there but door was closed. For all of my almost 2 million miles, the worst experience from Delta. I am highly disappointed as it was not my fault I have to sleep in Atlanta and not Jacksonville Florida

7.6
Good
3,996 reviews
8.0
Very Good
9,630 reviews

Comfort

7.9

Food

7.4

Entertainment

8.0

Boarding

8.2

Crew

8.6

Overall

8.0

Reviews

1 / 10

One of the worst flights ever. I got to the airport early for my 6:48 pm flight and tried to get on the 4:30 ish flight. The gate agent was one of the worst customer service people in my 20 yrs of flying Delta. Very rude and wouldn’t even talk to me about riding standby. Then flight took off 3 hrs late and when Landed in Atlanta, the gate people wouldn’t even try to get me on the plane. It was still there but door was closed. For all of my almost 2 million miles, the worst experience from Delta. I am highly disappointed as it was not my fault I have to sleep in Atlanta and not Jacksonville Florida

7.6
Good
705 reviews
8.0
Very Good
9,630 reviews

Comfort

7.9

Food

7.4

Entertainment

8.0

Boarding

8.2

Crew

8.6

Overall

8.0

Reviews

1 / 10

One of the worst flights ever. I got to the airport early for my 6:48 pm flight and tried to get on the 4:30 ish flight. The gate agent was one of the worst customer service people in my 20 yrs of flying Delta. Very rude and wouldn’t even talk to me about riding standby. Then flight took off 3 hrs late and when Landed in Atlanta, the gate people wouldn’t even try to get me on the plane. It was still there but door was closed. For all of my almost 2 million miles, the worst experience from Delta. I am highly disappointed as it was not my fault I have to sleep in Atlanta and not Jacksonville Florida

7.5
Good
1,622 reviews
8.0
Very Good
9,630 reviews

Comfort

7.9

Food

7.4

Entertainment

8.0

Boarding

8.2

Crew

8.6

Overall

8.0

Reviews

1 / 10

One of the worst flights ever. I got to the airport early for my 6:48 pm flight and tried to get on the 4:30 ish flight. The gate agent was one of the worst customer service people in my 20 yrs of flying Delta. Very rude and wouldn’t even talk to me about riding standby. Then flight took off 3 hrs late and when Landed in Atlanta, the gate people wouldn’t even try to get me on the plane. It was still there but door was closed. For all of my almost 2 million miles, the worst experience from Delta. I am highly disappointed as it was not my fault I have to sleep in Atlanta and not Jacksonville Florida

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 JetBlue for just £441, but on average you can expect to pay £485.

  • Are there last-minute flights available from Portland, Maine to London for under £900?

    There are currently 8+ open flights from Portland, Maine to London within the next 7 days for less than £900.

  • 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 £441. Other airlines that can offer you cheap pricing are Delta, from £450, and United Airlines, from £458. JetBlue is currently priced 37% below the average price you’ll pay for this route.

  • 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 25/7.

  • 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 £110). 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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Fly with Cheapflights

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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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