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

Flying on JetBlue is currently your cheapest option to London, with prices starting at $589. Additional round-trip tickets that might be worth considering are offered by Virgin Atlantic and Air Canada, with the lowest prices starting at $675 and $681, respectively. JetBlue is 33% cheaper than the average price of flights available within the next 90 days to this destination.

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

To fly one-way, consider booking your trip with KLM, which is currently one of the cheapest options available, starting at $483. United Airlines flights start at $496 while deals on TAP AIR PORTUGAL start at $777 one-way.

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

Travelers seeking maximum savings on their Portland, Maine to London flight should consider departing on Tuesday afternoons when fares are most often at their lowest. Sunday mornings flights should be avoided if possible as fares are typically the most expensive at this time.

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

Most travelers choose Portland - London Heathrow, Portland - London Gatwick or Portland - London City when deciding on the best route from Portland, Maine to London.

What are the most popular airlines that fly from Portland, Maine to London?

American Airlines, JetBlue and Delta are the most popular airlines when flying from Portland, Maine to London.

What is the cheapest day to fly round-trip from Portland, Maine to London?

Leaving on a Monday is a viable option for saving on travel. Heavily demanded days of the week can typically drive up the prices you see. Booking your travel for a less competitive day can save up to 18% on the overall cost on flights from Portland, Maine to London.

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

November is one of the best times of the year to fly to London from Portland, Maine. Prices for November average $888 per person but you can even find prices for as low as $696. The most expensive prices can be found in the month of June. Opting for a November flight can save you 39% on your journey compared to booking in June

Most accurate provider : When it comes to deals on Portland, Maine-London flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Portland, Maine-London flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Portland, Maine-London flight searches over the past month and is updated monthly.

Most trusted provider : When it comes to deals on Portland, Maine-London flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Portland, Maine-London flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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 4 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 vacation 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.

$271+ Save on Flights from Portland, ME to London

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Cheap flight deals from Portland to London

Most accurate provider	FlightHub 3 stars
Most trusted provider	FlightHub 3 stars
Round-trip from	$589 (JetBlue)
One-way from	$271 (Kiwi.com)
Popular in	June
Cheapest in	November
Average price	$810

Provider with most accurate pricing for Portland-London (LON) flight deals.

Search Deals

Provider most trusted by Cheapflights users for Portland-London (LON) flights.

Search Deals

From Portland to London (LON)

Search Deals

One-way flight from Portland to London (LON)

Search Deals

Highest demand for flights based on searches. 18% potential increase in price ($205 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 3% potential price decrease ($32 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in February 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 February 27, 2025.

Fri 4/46:10 amPWM - LHR

1 stop9h 35mJetBlue

Thu 4/1011:55 amLHR - PWM

1 stop16h 33mJetBlue

Deal found 2/26

$589

Tue 4/155:20 amPWM - LHR

1 stop20h 25mVirgin Atlantic

Wed 4/301:05 pmLHR - PWM

1 stop15h 54mVirgin Atlantic

Deal found 2/26

$675

Tue 4/156:15 amPWM - LHR

2 stops19h 15mAir Canada

Wed 4/305:40 pmLHR - PWM

2 stops34h 48mAir Canada

Deal found 2/26

$681

Tue 4/153:28 pmPWM - LHR

1 stop10h 47mUnited Airlines

Wed 4/306:50 amLHR - PWM

2 stops15h 32mUnited Airlines

Deal found 2/26

$683

Mon 5/129:30 pmPWM - LGW

1 stop31h 30mMultiple Airlines

Thu 5/152:00 pmLGW - PWM

1 stop26h 08mMultiple Airlines

Deal found 2/27

$719

Wed 5/142:30 pmPWM - LHR

2 stops20h 30mScandinavian Airlines

Thu 5/227:50 pmLHR - PWM

2 stops33h 24mScandinavian Airlines

Deal found 2/26

$727

Fri 4/46:15 amPWM - LHR

2 stops19h 15mMultiple Airlines

Thu 4/107:30 pmLHR - PWM

2 stops32h 57mMultiple Airlines

Deal found 2/26

$729

Fri 4/252:59 pmPWM - LHR

1 stop14h 16mKLM

Thu 5/11:05 pmLHR - PWM

1 stop15h 54mKLM

Deal found 2/26

$753

Fri 3/283:00 pmPWM - LHR

1 stop13h 45mDelta

Mon 3/318:40 amLHR - PWM

2 stops20h 35mDelta

Deal found 2/25

$780

Thu 4/176:15 amPWM - LHR

1 stop24h 10mAustrian Airlines

Tue 4/299:30 amLHR - PWM

1 stop18h 57mAustrian Airlines

Deal found 2/26

$964

Wed 5/147:15 amPWM - LGW

2 stops34h 05mTurkish Airlines

Thu 5/225:30 amLGW - PWM

2 stops21h 27mTurkish Airlines

Deal found 2/26

$1,092

Sun 6/226:10 amPWM - LHR

2 stops22h 40mTurkish Airlines

Sun 6/297:05 pmLHR - PWM

2 stops33h 32mTurkish Airlines

Deal found 2/26

$1,211

Best flights from Portland to London
Discover carefully curated flight deals from Portland to London that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated February 27, 2025.

Fri 4/46:10 amPWM - LHR

1 stop9h 35mJetBlue

Thu 4/1011:55 amLHR - PWM

1 stop16h 33mJetBlue

Deal found 2/26

$589

Tue 4/155:20 amPWM - LHR

1 stop20h 25mVirgin Atlantic

Wed 4/301:05 pmLHR - PWM

1 stop15h 54mVirgin Atlantic

Deal found 2/26

$675

Tue 4/156:15 amPWM - LHR

2 stops19h 15mAir Canada

Wed 4/305:40 pmLHR - PWM

2 stops34h 48mAir Canada

Deal found 2/26

$681

Tue 4/153:28 pmPWM - LHR

1 stop10h 47mUnited Airlines

Wed 4/306:50 amLHR - PWM

2 stops15h 32mUnited Airlines

Deal found 2/26

$683

Mon 5/129:30 pmPWM - LGW

1 stop31h 30mMultiple Airlines

Thu 5/152:00 pmLGW - PWM

1 stop26h 08mMultiple Airlines

Deal found 2/27

$719

Wed 5/142:30 pmPWM - LHR

2 stops20h 30mScandinavian Airlines

Thu 5/227:50 pmLHR - PWM

2 stops33h 24mScandinavian Airlines

Deal found 2/26

$727

Fri 4/252:59 pmPWM - LHR

1 stop14h 16mKLM

Wed 4/303:15 pmLHR - PWM

1 stop13h 44mKLM

Deal found 2/26

$753

Fri 3/283:00 pmPWM - LHR

1 stop13h 45mDelta

Mon 3/318:40 amLHR - PWM

2 stops20h 35mDelta

Deal found 2/25

$780

Thu 4/176:15 amPWM - LHR

1 stop24h 10mAustrian Airlines

Tue 4/299:30 amLHR - PWM

1 stop18h 57mAustrian Airlines

Deal found 2/26

$964

Wed 5/147:15 amPWM - LGW

2 stops34h 05mTurkish Airlines

Thu 5/225:30 amLGW - PWM

2 stops21h 27mTurkish Airlines

Deal found 2/26

$1,092

Sun 6/15:55 amPWM - LGW

2 stops20h 55mAmerican Airlines

Thu 7/313:05 pmLGW - PWM

2 stops25h 46mAmerican Airlines

Deal found 2/27

$1,296

Fri 4/46:15 amPWM - LHR

2 stops19h 15mMultiple Airlines

Thu 4/107:30 pmLHR - PWM

2 stops32h 57mMultiple Airlines

Deal found 2/26

$729

Last-minute flights from Portland to London
Discover last-minute flight deals from Portland to London. Data last updated February 27, 2025 and is based on user searches.

Sat 3/15:34 amPWM - LHR

2 stops25h 31mVirgin Atlantic

Mon 3/310:50 amLHR - PWM

1 stop18h 05mVirgin Atlantic

Deal found 2/25

$2,267

Sat 3/13:04 pmPWM - LHR

3 stops20h 56mScandinavian Airlines

Mon 3/36:40 amLHR - PWM

3 stops22h 16mScandinavian Airlines

Deal found 2/25

$2,312

Mon 3/312:21 pmPWM - LGW

1 stop16h 39mMultiple Airlines

Thu 3/132:00 pmLGW - PWM

2 stops31h 38mMultiple Airlines

Deal found 2/27

$919

Wed 3/53:04 pmPWM - LCY

2 stops13h 26mDelta

Wed 3/128:40 amLCY - PWM

2 stops18h 34mDelta

Deal found 2/27

$1,376

Thu 3/610:08 amPWM - LGW

1 stop18h 52mMultiple Airlines

Thu 3/132:00 pmLGW - PWM

2 stops31h 38mMultiple Airlines

Deal found 2/27

$931

Wed 3/1211:20 amPWM - LHR

1 stop15h 35mAustrian Airlines

Mon 3/177:25 pmLHR - PWM

2 stops27h 14mAustrian Airlines

Deal found 2/25

$1,646

Sun 3/236:01 amPWM - LHR

2 stops21h 09mAir Canada

Sat 4/122:05 pmLHR - PWM

2 stops38h 22mAir Canada

Deal found 2/25

$730

Sun 3/233:55 pmPWM - LHR

1 stop10h 25mUnited Airlines

Sat 4/1212:40 pmLHR - PWM

2 stops15h 47mUnited Airlines

Deal found 2/25

$753

Fri 3/286:10 amPWM - LHR

2 stops21h 00mMultiple Airlines

Mon 3/317:30 pmLHR - PWM

2 stops32h 57mMultiple Airlines

Deal found 2/25

$736

Fri 3/283:00 pmPWM - LHR

1 stop13h 45mDelta

Mon 3/318:40 amLHR - PWM

2 stops20h 35mDelta

Deal found 2/25

$780

Fri 3/283:00 pmPWM - LHR

1 stop12h 55mKLM

Mon 3/314:05 pmLHR - PWM

1 stop13h 10mKLM

Deal found 2/25

$801

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 February 27, 2025.

Sat 3/2210:08 amPWM - LGW

1 stop19h 52mMultiple Airlines

Deal found 2/27

$271

Sun 4/202:59 pmPWM - LHR

1 stop12h 51mKLM

Deal found 2/26

$483

Sat 4/196:42 pmPWM - LHR

1 stop31h 13mUnited Airlines

Deal found 2/26

$496

Sat 4/1212:00 pmPWM - LHR

3 stops48h 45mMultiple Airlines

Deal found 2/25

$504

Sat 3/2210:08 amPWM - SEN

3 stops45h 12mMultiple Airlines

Deal found 2/27

$577

Sat 3/221:20 pmPWM - LCY

2 stops19h 20mUnited Airlines

Deal found 2/27

$621

Sat 3/2210:08 amPWM - LCY

3 stops52h 22mMultiple Airlines

Deal found 2/27

$635

Wed 6/182:20 pmPWM - LGW

2 stops18h 40mTAP AIR PORTUGAL

Deal found 2/27

$777

Wed 6/182:20 pmPWM - LHR

2 stops23h 30mTAP AIR PORTUGAL

Deal found 2/27

$797

Wed 6/186:00 amPWM - LHR

3 stops19h 30mAir Canada

Deal found 2/27

$820

Wed 6/186:55 pmPWM - LHR

1 stop13h 35mVirgin Atlantic

Deal found 2/26

$822

Wed 6/182:35 pmPWM - LGW

1 stop14h 25mDelta

Deal found 2/27

$833

Find flights from Portland to London within your budget

Fly from

Fly to

Route

Depart

Return

Price

PortlandLondon

PWM - LHR

PWMLHR

Portland

Fri 4/4

6:10 am-8:45 pm

1 stop9h 35m

London Heathrow

Thu 4/10

11:55 am-11:28 pm

1 stop16h 33m

$589

PortlandLondon

PWM - LHR

PWMLHR

Portland

Tue 4/15

5:20 am-6:45 am

1 stop20h 25m

London Heathrow

Wed 4/30

1:05 pm-11:59 pm

1 stop15h 54m

$675

PortlandLondon

PWM - LHR

PWMLHR

Portland

Tue 4/15

6:15 am-6:30 am

2 stops19h 15m

London Heathrow

Wed 4/30

5:40 pm-11:28 pm

2 stops34h 48m

$681

PortlandLondon

PWM - LHR

PWMLHR

Portland

Tue 4/15

3:28 pm-7:15 am

1 stop10h 47m

London Heathrow

Wed 4/30

6:50 am-5:22 pm

2 stops15h 32m

$683

PortlandLondon

PWM - LGW

PWMLGW

Portland

Mon 5/12

9:30 pm-10:00 am

1 stop31h 30m

London Gatwick

Thu 5/15

2:00 pm-11:08 am

1 stop26h 08m

$719

PortlandLondon

PWM - LHR

PWMLHR

Portland

Wed 5/14

2:30 pm-4:00 pm

2 stops20h 30m

London Heathrow

Thu 5/22

7:50 pm-12:14 am

2 stops33h 24m

$727

PortlandLondon

PWM - LHR

PWMLHR

Portland

Fri 4/4

6:15 am-6:30 am

2 stops19h 15m

London Heathrow

Thu 4/10

7:30 pm-11:27 pm

2 stops32h 57m

$729

PortlandLondon

PWM - LHR

PWMLHR

Portland

Fri 4/25

2:59 pm-10:15 am

1 stop14h 16m

London Heathrow

Thu 5/1

1:05 pm-11:59 pm

1 stop15h 54m

$753

PortlandLondon

PWM - LHR

PWMLHR

Portland

Fri 3/28

3:00 pm-8:45 am

1 stop13h 45m

London Heathrow

Mon 3/31

8:40 am-12:15 am

2 stops20h 35m

$780

PortlandLondon

PWM - LHR

PWMLHR

Portland

Thu 4/17

6:15 am-11:25 am

1 stop24h 10m

London Heathrow

Tue 4/29

9:30 am-11:27 pm

1 stop18h 57m

$964

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/27

Showing 1-10 of 31 results

Compare providers for flights from Portland to London

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Portland to London in February.

Provider	Price Accuracy	Trust Score*
Expedia	Price Accuracy1 star	Trust Score*3 stars
FlightHub	Price Accuracy3 stars	Trust Score*3 stars
eDreams	Price Accuracy3 stars	Trust Score*3 stars
AranGrant	Price Accuracy3 stars	Trust Score*1 star

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

Most accurate provider: When it comes to deals on Portland, Maine-London flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Portland, Maine-London flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Portland, Maine-London flight searches over the past month and is updated monthly.
Most trusted provider: When it comes to deals on Portland, Maine-London flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Portland, Maine-London flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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 round-trip 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, November is the cheapest month in which you can book a flight from Portland, Maine to London (average of $661). Flying from Portland, Maine to London in June is currently the most expensive (average of $1,135). 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 PWM to LON?

Unlike in the afternoon, when flights are generally more expensive, you can save up to 5% on flights from Portland, Maine to London by exploring options for tickets at noon.

Rainfall in London by month

In terms of precipitation, rainfall in London ranges from 1.6 - 2.8 inches per month. January is typically the wettest month, when rainfall can reach 2.8 in. July is typically the driest time to visit London when rainfall is around 1.6 in.

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 62.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 39.2 F).

Reviews of airlines servicing London

Read reviews from past customers who have flown Delta, KLM and Austrian Airlines from Portland to London. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.

Delta

8.0

Very good

8,138 reviews

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

LAX - LHR

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

Delta

8.0

Very good

8,138 reviews

Delta

8.0

Very good

8,138 reviews

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

LAX - LHR

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

KLM

7.8

Good

1,328 reviews

Delta

8.0

Very good

8,138 reviews

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

LAX - LHR

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

Austrian Airlines

7.5

Good

770 reviews

Delta

8.0

Very good

8,138 reviews

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

LAX - LHR

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

Virgin Atlantic

7.5

Good

650 reviews

Delta

8.0

Very good

8,138 reviews

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

LAX - LHR

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

JetBlue

7.4

Good

3,035 reviews

Delta

8.0

Very good

8,138 reviews

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

LAX - LHR

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 4 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?
Flying on JetBlue is currently your cheapest option to London, with prices starting at $589. Additional round-trip tickets that might be worth considering are offered by Virgin Atlantic and Air Canada, with the lowest prices starting at $675 and $681, respectively. JetBlue is 33% cheaper than the average price of flights available within the next 90 days to this destination.
What are the cheapest airlines to fly from Portland, Maine to London one-way?
To fly one-way, consider booking your trip with KLM, which is currently one of the cheapest options available, starting at $483. United Airlines flights start at $496 while deals on TAP AIR PORTUGAL start at $777 one-way.
What are the most popular routes from Portland, Maine to London?
Most travelers choose Portland - London Heathrow, Portland - London Gatwick or Portland - London City when deciding on the best route from Portland, Maine to London.
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 vacation 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, November is the cheapest month in which you can book a flight from Portland, Maine to London (average of $661). Flying from Portland, Maine to London in June is currently the most expensive (average of $1,135). 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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Top 4 airlines flying from Portland to London

Airline	Cheapest	Average	Flexibility	On-time
JetBlue	Cheapest$586	Average$749	FlexibilityNo cancel fee	On-time62%
Delta	Cheapest$652	Average$954	FlexibilityNo cancel fee	On-timeN/A
American Airlines	Cheapest$708	Average$1,162	FlexibilityNo cancel fee	On-time71%
United Airlines	Cheapest$725	Average$960	FlexibilityNo cancel fee	On-time69%

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$271+ Cheap flights from Portland, ME (PWM) to London (LON)

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 3/22. Fares are subject to change and may not be available on all flights or dates of travel.

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Cheap flight deals from Portland to London

Most accurate provider

Most trusted provider

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 February 27, 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 February 27, 2025.

Find flights from Portland to London within your budget

Compare providers for flights from Portland to London

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Portland to London in February.

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?

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

Find hourly flight availability from Portland to London. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated February 27, 2025.

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

Read reviews from past customers who have flown Delta, KLM and Austrian Airlines from Portland to London. You can also see how each airline stacks up 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 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?

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Alternative routes for Portland to London

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Top 4 airlines flying from Portland to London

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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 February 27, 2025.