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 $587. Additional round-trip tickets that might be worth considering are offered by Scandinavian Airlines and American Airlines, with the lowest prices starting at $691 and $742, respectively. JetBlue is 32% 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 JetBlue, which is currently one of the cheapest options available, starting at $249. Air Canada flights start at $455 while deals on Virgin Atlantic start at $459 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. Saturday evenings 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?

February is one of the best times of the year to fly to London from Portland, Maine. Prices for February average $874 per person but you can even find prices for as low as $608. The most expensive prices can be found in the month of June. Opting for a February flight can save you 42% 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.

$249+ Flights from Portland, ME to London

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1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

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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	$587 (JetBlue Airways)
One-way from	$249 (JetBlue)
Popular in	June
Cheapest in	February
Average price	$956

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. 20% potential increase in price ($219 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 3% potential price decrease ($34 potential savings vs. average RT 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 January 30, 2025.

Mon 3/315:35 pmPWM - LHR

1 stop10h 55mJetBlue

Sun 4/138:15 amLHR - PWM

1 stop13h 25mJetBlue

Deal found 1/29

$587

Mon 3/103:00 pmPWM - LHR

3 stops23h 50mScandinavian Airlines

Wed 3/196:40 amLHR - PWM

2 stops21h 35mScandinavian Airlines

Deal found 1/30

$691

Wed 2/264:13 pmPWM - LHR

1 stop12h 07mAmerican Airlines

Wed 3/59:50 amLHR - PWM

2 stops17h 51mAmerican Airlines

Deal found 1/29

$742

Mon 3/104:03 pmPWM - LHR

1 stop11h 52mUnited Airlines

Wed 3/1911:10 amLHR - PWM

2 stops16h 05mUnited Airlines

Deal found 1/30

$758

Mon 3/101:01 pmPWM - LHR

1 stop13h 34mMultiple Airlines

Wed 3/191:10 pmLHR - PWM

1 stop13h 47mMultiple Airlines

Deal found 1/30

$763

Wed 2/263:04 pmPWM - LHR

1 stop11h 51mKLM

Wed 3/52:30 pmLHR - PWM

1 stop14h 25mKLM

Deal found 1/29

$773

Mon 3/106:10 amPWM - LHR

3 stops20h 20mAir Canada

Wed 3/199:00 amLHR - PWM

3 stops18h 15mAir Canada

Deal found 1/30

$785

Fri 2/285:34 amPWM - LHR

1 stop19h 46mVirgin Atlantic

Fri 3/710:50 amLHR - PWM

1 stop18h 05mVirgin Atlantic

Deal found 1/29

$794

Fri 2/284:04 pmPWM - LHR

1 stop14h 11mLufthansa

Fri 3/71:30 pmLHR - PWM

2 stops15h 17mLufthansa

Deal found 1/29

$798

Fri 9/192:35 pmPWM - LHR

1 stop10h 50mDelta

Wed 10/19:55 amLHR - PWM

2 stops18h 50mDelta

Deal found 1/29

$869

Sun 4/276:10 amPWM - LGW

2 stops22h 45mTurkish Airlines

Sat 5/310:40 pmLGW - PWM

2 stops29h 39mTurkish Airlines

Deal found 1/30

$912

Mon 2/2412:06 pmPWM - LGW

1 stop16h 54mMultiple Airlines

Sun 3/211:40 amLGW - PWM

2 stops28h 46mMultiple Airlines

Deal found 1/30

$1,107

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 January 30, 2025.

Mon 3/315:35 pmPWM - LHR

1 stop10h 55mJetBlue

Sun 4/138:15 amLHR - PWM

1 stop13h 25mJetBlue

Deal found 1/29

$587

Mon 3/103:00 pmPWM - LHR

3 stops23h 50mScandinavian Airlines

Wed 3/196:40 amLHR - PWM

2 stops21h 35mScandinavian Airlines

Deal found 1/30

$691

Wed 2/264:13 pmPWM - LHR

1 stop12h 07mAmerican Airlines

Wed 3/59:50 amLHR - PWM

2 stops17h 51mAmerican Airlines

Deal found 1/29

$742

Mon 3/104:03 pmPWM - LHR

1 stop11h 52mUnited Airlines

Wed 3/1911:10 amLHR - PWM

2 stops16h 05mUnited Airlines

Deal found 1/30

$758

Mon 3/101:01 pmPWM - LHR

1 stop13h 34mMultiple Airlines

Wed 3/191:10 pmLHR - PWM

1 stop13h 47mMultiple Airlines

Deal found 1/30

$763

Wed 2/263:04 pmPWM - LHR

1 stop11h 51mKLM

Wed 3/52:30 pmLHR - PWM

1 stop14h 25mKLM

Deal found 1/29

$773

Mon 3/106:10 amPWM - LHR

3 stops20h 20mAir Canada

Wed 3/199:00 amLHR - PWM

3 stops18h 15mAir Canada

Deal found 1/30

$785

Fri 2/285:34 amPWM - LHR

1 stop19h 46mVirgin Atlantic

Fri 3/710:50 amLHR - PWM

1 stop18h 05mVirgin Atlantic

Deal found 1/29

$794

Fri 2/284:04 pmPWM - LHR

1 stop14h 11mLufthansa

Fri 3/71:30 pmLHR - PWM

2 stops15h 17mLufthansa

Deal found 1/29

$798

Sat 3/13:04 pmPWM - LHR

1 stop14h 26mDelta

Sat 3/84:35 pmLHR - PWM

1 stop12h 51mDelta

Deal found 1/30

$873

Sun 4/276:10 amPWM - LGW

2 stops22h 45mTurkish Airlines

Sat 5/310:40 pmLGW - PWM

2 stops29h 39mTurkish Airlines

Deal found 1/30

$912

Wed 3/1211:20 amPWM - LHR

1 stop18h 55mAustrian Airlines

Mon 3/177:25 pmLHR - PWM

2 stops27h 14mAustrian Airlines

Deal found 1/28

$1,477

Last-minute flights from Portland to London
Discover last-minute flight deals from Portland to London. Data last updated January 30, 2025 and is based on user searches.

Mon 2/241:14 pmPWM - LHR

1 stop16h 36mUnited Airlines

Wed 3/58:55 amLHR - PWM

2 stops19h 20mUnited Airlines

Deal found 1/30

$935

Mon 2/245:25 pmPWM - LHR

1 stop12h 05mDelta

Tue 3/410:10 amLHR - PWM

1 stop18h 47mDelta

Deal found 1/30

$953

Mon 2/2412:06 pmPWM - LGW

1 stop16h 54mMultiple Airlines

Sun 3/211:40 amLGW - PWM

2 stops28h 46mMultiple Airlines

Deal found 1/30

$1,107

Wed 2/264:13 pmPWM - LHR

1 stop12h 07mAmerican Airlines

Wed 3/59:50 amLHR - PWM

2 stops17h 51mAmerican Airlines

Deal found 1/29

$742

Wed 2/263:04 pmPWM - LHR

1 stop11h 51mKLM

Wed 3/52:30 pmLHR - PWM

1 stop14h 25mKLM

Deal found 1/29

$773

Wed 2/2612:15 pmPWM - LHR

3 stops18h 35mAir Canada

Wed 3/59:00 amLHR - PWM

3 stops19h 15mAir Canada

Deal found 1/29

$786

Wed 2/263:04 pmPWM - LHR

2 stops19h 56mScandinavian Airlines

Mon 3/37:30 pmLHR - PWM

2 stops33h 27mScandinavian Airlines

Deal found 1/30

$849

Wed 2/263:04 pmPWM - LHR

1 stop15h 06mMultiple Airlines

Tue 3/42:30 pmLHR - PWM

1 stop14h 25mMultiple Airlines

Deal found 1/30

$1,073

Wed 2/266:00 amPWM - LCY

3 stops30h 40mMultiple Airlines

Mon 3/35:45 pmLCY - PWM

3 stops34h 25mMultiple Airlines

Deal found 1/30

$1,217

Thu 2/273:04 pmPWM - LCY

2 stops13h 26mDelta

Tue 3/410:00 amLCY - PWM

2 stops18h 57mDelta

Deal found 1/30

$1,162

Fri 2/285:34 amPWM - LHR

1 stop19h 46mVirgin Atlantic

Fri 3/710:50 amLHR - PWM

1 stop18h 05mVirgin Atlantic

Deal found 1/29

$794

Fri 2/284:04 pmPWM - LHR

1 stop14h 11mLufthansa

Fri 3/71:30 pmLHR - PWM

2 stops15h 17mLufthansa

Deal found 1/29

$798

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 January 30, 2025.

Sun 4/205:35 pmPWM - LHR

1 stop10h 55mJetBlue

Deal found 1/29

$249

Tue 4/226:00 amPWM - LHR

2 stops19h 30mAir Canada

Deal found 1/29

$455

Tue 4/225:40 amPWM - LHR

1 stop19h 45mVirgin Atlantic

Deal found 1/29

$459

Fri 4/186:00 amPWM - LHR

1 stop19h 20mUnited Airlines

Deal found 1/28

$473

Fri 4/1811:25 amPWM - LHR

1 stop17h 25mDelta

Deal found 1/30

$533

Sun 2/163:04 pmPWM - LHR

1 stop15h 06mKLM

Deal found 1/29

$548

Tue 5/273:20 pmPWM - LHR

2 stops22h 30mTAP AIR PORTUGAL

Deal found 1/29

$559

Sun 2/164:46 pmPWM - LHR

3 stops39h 04mWestJet

Deal found 1/29

$611

Tue 4/226:07 pmPWM - LHR

3 stops46h 28mMultiple Airlines

Deal found 1/29

$612

Tue 4/2212:50 pmPWM - LCY

2 stops13h 25mKLM

Deal found 1/29

$686

Tue 4/225:35 pmPWM - LGW

2 stops17h 00mTAP AIR PORTUGAL

Deal found 1/29

$752

Wed 6/1812:50 pmPWM - LGW

2 stops16h 10mDelta

Deal found 1/30

$843

Find flights from Portland to London within your budget

Fly from

Fly to

Route

Depart

Return

Price

PortlandLondon

PWM - LHR

PWMLHR

Portland

Mon 3/31

5:35 pm-9:30 am

1 stop10h 55m

London Heathrow

Sun 4/13

8:15 am-4:40 pm

1 stop13h 25m

$587

PortlandLondon

PWM - LHR

PWMLHR

Portland

Mon 3/10

3:00 pm-6:50 pm

3 stops23h 50m

London Heathrow

Wed 3/19

6:40 am-12:15 am

2 stops21h 35m

$691

PortlandLondon

PWM - LHR

PWMLHR

Portland

Wed 2/26

4:13 pm-9:20 am

1 stop12h 07m

London Heathrow

Wed 3/5

9:50 am-10:41 pm

2 stops17h 51m

$742

PortlandLondon

PWM - LHR

PWMLHR

Portland

Mon 3/10

4:03 pm-7:55 am

1 stop11h 52m

London Heathrow

Wed 3/19

11:10 am-11:15 pm

2 stops16h 05m

$758

PortlandLondon

PWM - LHR

PWMLHR

Portland

Mon 3/10

1:01 pm-6:35 am

1 stop13h 34m

London Heathrow

Wed 3/19

1:10 pm-10:57 pm

1 stop13h 47m

$763

PortlandLondon

PWM - LHR

PWMLHR

Portland

Wed 2/26

3:04 pm-7:55 am

1 stop11h 51m

London Heathrow

Wed 3/5

2:30 pm-11:55 pm

1 stop14h 25m

$773

PortlandLondon

PWM - LHR

PWMLHR

Portland

Mon 3/10

6:10 am-6:30 am

3 stops20h 20m

London Heathrow

Wed 3/19

9:00 am-11:15 pm

3 stops18h 15m

$785

PortlandLondon

PWM - LHR

PWMLHR

Portland

Fri 2/28

5:34 am-6:20 am

1 stop19h 46m

London Heathrow

Fri 3/7

10:50 am-11:55 pm

1 stop18h 05m

$794

PortlandLondon

PWM - LHR

PWMLHR

Portland

Fri 2/28

4:04 pm-11:15 am

1 stop14h 11m

London Heathrow

Fri 3/7

1:30 pm-11:47 pm

2 stops15h 17m

$798

PortlandLondon

PWM - LHR

PWMLHR

Portland

Sat 3/1

3:04 pm-10:30 am

1 stop14h 26m

London Heathrow

Sat 3/8

4:35 pm-12:26 am

1 stop12h 51m

$873

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/29

Showing 1-10 of 32 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 January.

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 $1,138). 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

8,450 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

8,450 reviews

Delta

8.0

Very good

8,450 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

1,335 reviews

Delta

8.0

Very good

8,450 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

786 reviews

Delta

8.0

Very good

8,450 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

657 reviews

Delta

8.0

Very good

8,450 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.

United Airlines

7.4

Good

8,906 reviews

Delta

8.0

Very good

8,450 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 $587. Additional round-trip tickets that might be worth considering are offered by Scandinavian Airlines and American Airlines, with the lowest prices starting at $691 and $742, respectively. JetBlue is 32% 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 JetBlue, which is currently one of the cheapest options available, starting at $249. Air Canada flights start at $455 while deals on Virgin Atlantic start at $459 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 $1,138). 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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Top 4 airlines flying from Portland to London

Airline	Cheapest	Average	Flexibility	On-time
JetBlue	Cheapest$586	Average$749	FlexibilityNo cancel fee	On-time62%
American Airlines	Cheapest$602	Average$1,162	FlexibilityNo cancel fee	On-time71%
Delta	Cheapest$650	Average$869	FlexibilityNo cancel fee	On-timeN/A
United Airlines	Cheapest$725	Average$896	FlexibilityNo cancel fee	On-time69%

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$249+ 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 4/20. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Portland to London with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

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 January 30, 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 January 30, 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 January.

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 January 30, 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?

Traveling to a place near Portland?

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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 January 30, 2025.