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

Currently priced at £537, Icelandair will fly you from London to Portland and back. In addition to Icelandair, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from Lufthansa and Brussels Airlines - these airlines can fly you to your destination from £540 and £549, respectively. Icelandair is 20% cheaper than the average price of flights available within the next 90 days to this destination.

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

For one-way options, check prices for WestJet. According to our data, you can fly for as low as £510. Users have also found prices from £516 and £517 on British Airways and Lufthansa, respectively.

What are the most popular routes from London to Portland?

The most popular route from London to Portland is London Heathrow - Portland. You may also consider London Gatwick - Portland or London City - Portland.

What are the cheapest flights from London to Portland?

While on average a flight from London to Portland is generally £1,049, our data shows the cheapest flight currently is £545. When looking at the most popular route, (London Heathrow - Portland), you can expect to pay £470 for that flight.

What are the most reliable airlines from London to Portland?

Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from London to Portland on time: American Airlines (76%), Alaska Airlines (76%), Aer Lingus (76%).

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

Air Canada, Finnair and British Airways are the most popular airlines when flying from London to Portland.

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

Users have found that leaving on a Monday can be a cost-effective option. It’s possible to save up to 26% on your flight compared to booking on days when demand is much higher.

How far in advance should I book a flight from London to Portland?

Find a great deal and save up to 19% by booking at least 23 days prior to your desired departure date, rather than waiting until the week of travel. According to our data, there are a number of flights available from London to Portland within the next two weeks, with the cheapest ticket starting at £585.

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

The best pricing can be found in the month of March. Prices to Portland from London average £672. You can even find prices in March for less than £672, as users have found deals to Portland from as low as £463. The month of August appears to be one of the more expensive times to travel to Portland from London. Flying in the targeted month can save you up to 37%.

What airport do you fly into for flights to Portland from London?

Most people fly into Portland (PDX) if they book a flight to Portland from London. On average, Portland has 7 inbound flights from London per day from 9 airlines. Portland is conveniently located just 6.0 mi from Portland’s city center.

Can I find deals for flights from London to Portland that include hotel bookings?

Yes. In addition to deals on London to Portland flights, Cheapflights offers holiday packages that include both flights and hotel.

How can I find direct flights from London to Portland?

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from London to Portland.

Can I find deals for business class flights from London to Portland?

Yes. Cheapflights offers flight deals from London to Portland by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

£510+ Flights from London to Portland - Compare & Save Big

Cheapflights Tip: The best prices from London to Portland are usually found in March or February, booked 63 days in advance, depart on a Tuesday or Wednesday and return on a Friday

Cheap flight deals from London to Portland

Round-trip from	£537
One-way from	£510
Popular in	August
Cheapest in	March
Average price	£682
Good round-trip deal	£646 or less
Good one-way deal	£672 or less

Icelandair
15/5-26/5
2 total stops
25h 25m total
London to Portland

Search Deals

WestJet
11/6
2 total stops
18h 19m total
London to Portland

Search Deals

Highest demand for flights based on searches. 14% potential increase in price (£85 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 3% potential price decrease (£18 potential savings vs. average return price).

Search Deals

Average for round-trip flights in April 2025

Search Deals

Price to beat on a round-trip flight from London (LON) to Portland.

Search Deals

Price to beat on a one-way flight from London (LON) to Portland.

Search Deals

Find flight deals from London to Portland

Cheapest flights from London to Portland
Explore the most affordable flight options available from London to Portland. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 29 April 2025.

Thu 15/513:05LHR - PDX

1 stop12h 50mIcelandair

Mon 26/515:20PDX - LHR

1 stop12h 35mIcelandair

Deal found 28/4£537

Fri 5/906:00LHR - PDX

2 stops24h 30mMultiple Airlines

Thu 18/913:01PDX - LHR

1 stop15h 19mMultiple Airlines

Deal found 28/4£537

Mon 12/508:30LHR - PDX

2 stops18h 15mLufthansa

Fri 23/515:42PDX - LHR

1 stop14h 28mLufthansa

Deal found 28/4£540

Mon 5/507:45LHR - PDX

2 stops20h 17mUnited Airlines

Mon 19/506:00PDX - LHR

1 stop20h 25mUnited Airlines

Deal found 28/4£542

Wed 14/510:55LGW - PDX

1 stop19h 23mMultiple Airlines

Sat 24/521:30PDX - LGW

1 stop29h 25mMultiple Airlines

Deal found 28/4£543

Thu 18/907:45LHR - PDX

2 stops20h 18mBrussels Airlines

Thu 25/908:30PDX - LHR

1 stop13h 50mBrussels Airlines

Deal found 28/4£549

Wed 28/512:10LGW - PDX

1 stop33h 02mJetBlue

Wed 4/614:30PDX - LGW

1 stop35h 05mJetBlue

Deal found 28/4£549

Thu 18/918:05LHR - PDX

2 stops34h 21mAmerican Airlines

Sun 28/922:42PDX - LHR

1 stop24h 58mAmerican Airlines

Deal found 28/4£552

Fri 5/916:00LHR - PDX

2 stops27h 49mAir Canada

Sat 20/906:15PDX - LHR

2 stops21h 35mAir Canada

Deal found 28/4£554

Thu 15/513:00LGW - PDX

1 stop12h 55mIcelandair

Fri 23/515:20PDX - LGW

1 stop12h 25mIcelandair

Deal found 28/4£558

Mon 5/506:30LHR - PDX

1 stop12h 50mKLM

Mon 19/515:30PDX - LHR

1 stop14h 45mKLM

Deal found 28/4£562

Wed 3/910:30LHR - PDX

1 stop16h 03mBritish Airways

Sat 20/919:25PDX - LHR

Nonstop9h 35mBritish Airways

Deal found 28/4£573

Best flights from London to Portland
Discover carefully curated flight deals from London to Portland that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 29 April 2025.

Thu 15/513:05LHR - PDX

1 stop12h 50mIcelandair

Mon 26/515:20PDX - LHR

1 stop12h 35mIcelandair

Deal found 28/4£537

Fri 5/906:00LHR - PDX

2 stops24h 30mMultiple Airlines

Thu 18/913:01PDX - LHR

1 stop15h 19mMultiple Airlines

Deal found 28/4£537

Mon 12/508:30LHR - PDX

2 stops18h 15mLufthansa

Thu 22/510:00PDX - LHR

2 stops17h 50mLufthansa

Deal found 28/4£540

Thu 18/907:45LHR - PDX

2 stops20h 18mBrussels Airlines

Thu 25/908:30PDX - LHR

1 stop13h 50mBrussels Airlines

Deal found 28/4£549

Wed 28/512:10LGW - PDX

1 stop33h 02mJetBlue

Wed 4/614:30PDX - LGW

1 stop35h 05mJetBlue

Deal found 28/4£549

Thu 18/918:05LHR - PDX

2 stops34h 21mAmerican Airlines

Sun 28/922:42PDX - LHR

1 stop24h 58mAmerican Airlines

Deal found 28/4£552

Fri 5/916:00LHR - PDX

2 stops27h 49mAir Canada

Sat 20/906:15PDX - LHR

2 stops21h 35mAir Canada

Deal found 28/4£554

Thu 8/509:30LHR - PDX

2 stops20h 09mUnited Airlines

Sun 11/512:55PDX - LHR

1 stop12h 45mUnited Airlines

Deal found 28/4£555

Mon 12/506:30LHR - PDX

1 stop12h 50mDelta

Thu 22/517:40PDX - LHR

1 stop12h 35mDelta

Deal found 28/4£562

Wed 3/910:30LHR - PDX

1 stop16h 03mBritish Airways

Sat 20/919:25PDX - LHR

Nonstop9h 35mBritish Airways

Deal found 28/4£573

Mon 12/517:10LHR - PDX

2 stops37h 26mSWISS

Sun 25/511:00PDX - LHR

2 stops18h 00mSWISS

Deal found 27/4£597

Fri 9/514:25LHR - PDX

1 stop16h 34mFinnair

Thu 22/519:25PDX - LHR

Nonstop9h 35mFinnair

Deal found 28/4£609

Direct flights from London to Portland
Explore direct flight options from London to Portland based on user searches, and compare prices and availability for your desired travel dates. Data last updated 29 April 2025.

Wed 3/915:40LHR - PDX

Nonstop9h 55mBritish Airways

Sat 20/919:25PDX - LHR

Nonstop9h 35mBritish Airways

Deal found 28/4£575

Thu 18/915:40LHR - PDX

Nonstop9h 55mAmerican Airlines

Mon 29/919:25PDX - LHR

Nonstop9h 35mAmerican Airlines

Deal found 28/4£605

Mon 12/515:40LHR - PDX

Nonstop9h 55mFinnair

Mon 26/519:25PDX - LHR

Nonstop9h 35mFinnair

Deal found 28/4£635

Thu 18/915:40LHR - PDX

Nonstop9h 55mIberia

Sat 27/919:25PDX - LHR

Nonstop9h 35mIberia

Deal found 28/4£635

Sat 24/515:40LHR - PDX

Nonstop9h 55mMultiple Airlines

Fri 30/519:25PDX - LHR

Nonstop9h 35mMultiple Airlines

Deal found 28/4£805

Last-minute flights from London to Portland
Discover last-minute flight deals from London to Portland. Data last updated 29 April 2025 and is based on user searches.

Sun 4/510:55LGW - PDX

2 stops34h 42mMultiple Airlines

Sun 11/515:20PDX - LGW

2 stops20h 35mMultiple Airlines

Deal found 27/4£593

Sun 4/506:05LTN - PDX

3 stops39h 32mMultiple Airlines

Sun 11/515:20PDX - LTN

2 stops20h 05mMultiple Airlines

Deal found 27/4£629

Sun 4/513:00LGW - PDX

1 stop12h 55mIcelandair

Sun 11/515:20PDX - LGW

1 stop15h 20mIcelandair

Deal found 27/4£657

Mon 5/507:45LHR - PDX

2 stops20h 17mUnited Airlines

Mon 19/506:00PDX - LHR

1 stop20h 25mUnited Airlines

Deal found 28/4£542

Mon 5/506:30LHR - PDX

1 stop12h 50mKLM

Mon 19/515:30PDX - LHR

1 stop14h 45mKLM

Deal found 28/4£562

Mon 5/515:40LHR - PDX

Nonstop9h 55mAmerican Airlines

Mon 19/515:24PDX - LHR

1 stop12h 51mAmerican Airlines

Deal found 28/4£579

Mon 5/512:15LHR - PDX

1 stop15h 47mMultiple Airlines

Sat 5/709:53PDX - LHR

1 stop13h 32mMultiple Airlines

Deal found 28/4£623

Mon 5/514:25LHR - PDX

1 stop16h 34mBritish Airways

Wed 28/519:25PDX - LHR

Nonstop9h 35mBritish Airways

Deal found 28/4£624

Thu 8/509:20LCY - PDX

2 stops18h 00mVirgin Atlantic

Sun 11/513:15PDX - LCY

1 stop11h 35mVirgin Atlantic

Deal found 28/4£769

Fri 9/508:30LHR - PDX

2 stops22h 06mAir Canada

Thu 22/510:00PDX - LHR

2 stops17h 50mAir Canada

Deal found 28/4£567

Fri 9/508:40LHR - PDX

2 stops19h 32mDelta

Thu 22/515:30PDX - LHR

1 stop14h 45mDelta

Deal found 28/4£596

Fri 9/514:25LHR - PDX

1 stop16h 34mFinnair

Thu 22/519:25PDX - LHR

Nonstop9h 35mFinnair

Deal found 28/4£609

One-way flights from London to Portland
Search for one-way flight options from London to Portland. Find affordable one-way fares based on user searches. Data last updated 29 April 2025.

Wed 11/614:10LHR - PDX

2 stops18h 19mWestJet

Deal found 28/4£510

Sat 10/507:05LHR - PDX

1 stop18h 50mMultiple Airlines

Deal found 28/4£514

Wed 14/515:40LHR - PDX

Nonstop9h 55mBritish Airways

Deal found 28/4£516

Wed 14/514:10LHR - PDX

1 stop16h 26mLufthansa

Deal found 28/4£517

Wed 14/521:25LHR - PDX

1 stop28h 30mIcelandair

Deal found 28/4£519

Wed 9/709:15LGW - PDX

2 stops32h 02mMultiple Airlines

Deal found 28/4£522

Sun 29/608:25STN - PDX

3 stops22h 21mMultiple Airlines

Deal found 28/4£535

Sat 17/510:45LTN - PDX

2 stops15h 10mMultiple Airlines

Deal found 28/4£547

Wed 10/910:45LGW - PDX

2 stops34h 03mWestJet

Deal found 28/4£558

Wed 18/609:50LHR - PDX

2 stops20h 25mAer Lingus

Deal found 28/4£559

Tue 30/915:40LGW - PDX

1 stop34h 15mIcelandair

Deal found 28/4£573

Thu 29/510:00LGW - PDX

2 stops21h 15mAir Europa

Deal found 28/4£580

Cheapflights Fare Finder

Use the filters below to find and compare flights from London to Portland that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

LondonPortland

LHR - PDX

LHRPDX

London Heathrow

Thu 15/5

13:05-17:55

1 stop12h 50m

Portland

Mon 26/5

15:20-11:55

1 stop12h 35m

£537

LondonPortland

LHR - PDX

LHRPDX

London Heathrow

Fri 5/9

06:00-22:30

2 stops24h 30m

Portland

Thu 18/9

13:01-12:20

1 stop15h 19m

£537

LondonPortland

LHR - PDX

LHRPDX

London Heathrow

Mon 12/5

08:30-18:45

2 stops18h 15m

Portland

Fri 23/5

15:42-14:10

1 stop14h 28m

£540

LondonPortland

LGW - PDX

LGWPDX

London Gatwick

Wed 14/5

10:55-22:18

1 stop19h 23m

Portland

Sat 24/5

21:30-10:55

1 stop29h 25m

£543

LondonPortland

LHR - PDX

LHRPDX

London Heathrow

Thu 18/9

07:45-20:03

2 stops20h 18m

Portland

Thu 25/9

08:30-06:20

1 stop13h 50m

£549

LondonPortland

LGW - PDX

LGWPDX

London Gatwick

Wed 28/5

12:10-13:12

1 stop33h 02m

Portland

Wed 4/6

14:30-09:35

1 stop35h 05m

£549

LondonPortland

LHR - PDX

LHRPDX

London Heathrow

Thu 18/9

18:05-20:26

2 stops34h 21m

Portland

Sun 28/9

22:42-07:40

1 stop24h 58m

£552

LondonPortland

LHR - PDX

LHRPDX

London Heathrow

Fri 5/9

16:00-11:49

2 stops27h 49m

Portland

Sat 20/9

06:15-11:50

2 stops21h 35m

£554

LondonPortland

LGW - PDX

LGWPDX

London Gatwick

Thu 15/5

13:00-17:55

1 stop12h 55m

Portland

Fri 23/5

15:20-11:45

1 stop12h 25m

£558

LondonPortland

LHR - PDX

LHRPDX

London Heathrow

Mon 12/5

06:30-11:20

1 stop12h 50m

Portland

Thu 22/5

17:40-14:15

1 stop12h 35m

£562

Flights are sorted by cheapest return flights first.

Deals found on 28/4

Showing 1-10 of 58 results

...

Best time to book a flight from London to Portland

Have a flexible travel schedule? Discover the best time to fly to Portland from London 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.

Cheapflights Insights

Everything you need to know about your flight from London to Portland

How far ahead should I book a flight from London to Portland?

The best time to book flights from London to Portland is 63 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

What is the cheapest month to book a flight from London to Portland?

Currently, January is the cheapest month in which you can book a flight from London to Portland (average of £736). Flying from London to Portland in July is currently the most expensive (average of £1,048). 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 LON to PDX?

When flying from London to Portland, the time of day you fly usually plays a role in the price. Save by searching for a flight in the morning, which can drop the price by up to 20% versus a flight in the afternoon.

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

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

Weekly flight availability from London to Portland

The most flights from LON to PDX are scheduled on a Monday (7 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (7 on average).

Rainfall in Portland by month

In terms of precipitation, rainfall in Portland ranges from 18.0 - 142.0 inches per month. November is typically the wettest month, when rainfall can reach 142.0 mm. July is typically the driest time to visit Portland when rainfall is around 18.0 mm.

Temperature in Portland by month

If weather is an important factor for your trip to Portland, 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 21.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 5.0 C).

Reviews of airlines servicing Portland

Peruse reviews from past customers who have flown with Delta, KLM and Finnair from London to Portland to help guide your decision. 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

7,929 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Delta

8.0

Very Good

7,929 reviews

Delta

8.0

Very Good

7,929 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

KLM

7.8

Good

1,333 reviews

Delta

8.0

Very Good

7,929 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Finnair

7.6

Good

1,273 reviews

Delta

8.0

Very Good

7,929 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

SWISS

7.5

Good

1,588 reviews

Delta

8.0

Very Good

7,929 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Air France

7.4

Good

1,444 reviews

Delta

8.0

Very Good

7,929 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Related info for your journey

What airport do you fly into for flights to Portland from London?
Most people fly into Portland (PDX) if they book a flight to Portland from London. On average, Portland has 7 inbound flights from London per day from 9 airlines. Portland is conveniently located just 6.0 mi from Portland’s city center.
What are the cheapest airlines flying from London to Portland round-trip?
Currently priced at £537, Icelandair will fly you from London to Portland and back. In addition to Icelandair, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from Lufthansa and Brussels Airlines - these airlines can fly you to your destination from £540 and £549, respectively. Icelandair is 20% cheaper than the average price of flights available within the next 90 days to this destination.
What are the cheapest airlines to fly from London to Portland one-way?
For one-way options, check prices for WestJet. According to our data, you can fly for as low as £510. Users have also found prices from £516 and £517 on British Airways and Lufthansa, respectively.
What are the most popular routes from London to Portland?
The most popular route from London to Portland is London Heathrow - Portland. You may also consider London Gatwick - Portland or London City - Portland.
What are the most reliable airlines from London to Portland?
Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from London to Portland on time: American Airlines (76%), Alaska Airlines (76%), Aer Lingus (76%).
What are the cheapest flights from London to Portland?
While on average a flight from London to Portland is generally £1,049, our data shows the cheapest flight currently is £545. When looking at the most popular route, (London Heathrow - Portland), you can expect to pay £470 for that flight.
Can I find deals for flights from London to Portland that include hotel bookings?
Yes. In addition to deals on London to Portland flights, Cheapflights offers holiday packages that include both flights and hotel.
How can I find direct flights from London to Portland?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from London to Portland.
Can I find deals for business class flights from London to Portland?
Yes. Cheapflights offers flight deals from London to Portland 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 London to Portland?
Currently, January is the cheapest month in which you can book a flight from London to Portland (average of £736). Flying from London to Portland in July is currently the most expensive (average of £1,048). 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

Cannon Beach

Lincoln City

Browse thousands of different options on Cheapflights for your next trip

Fly from London to Portland on these airlines

British Airways flights from London to Portland

Finnair flights from London to Portland

Virgin Atlantic flights from London to Portland

Alternative routes for London to Portland

Other flights to Portland

Heathrow to Portland flights

Portland to San Francisco flights

Portland to Los Angeles flights

Portland to Seattle flights

Portland to London Heathrow Airport flights

Portland to Newark Airport flights

Portland to London Heathrow Airport flights

Portland to San Francisco flights

Portland to London Heathrow Airport flights

Top 9 airlines flying from London to Portland

Airline	Cheapest	Average	Flexibility	On-time
Icelandair	Cheapest£440	Average£663	FlexibilityNo cancel fee	On-time76%	Search Icelandair flights
Finnair	Cheapest£490	Average£614	FlexibilityNo cancel fee	On-time76%	Search Finnair flights
Air Canada	Cheapest£499	Average£557	FlexibilityNo cancel fee	On-time67%	Search Air Canada flights
British Airways	Cheapest£514	Average£711	FlexibilityNo cancel fee	On-time70%	Search British Airways flights
United Airlines	Cheapest£517	Average£604	FlexibilityNo cancel fee	On-time69%	Search United Airlines flights
Lufthansa	Cheapest£522	Average£638	FlexibilityNo cancel fee	On-time76%	Search Lufthansa flights
Virgin Atlantic	Cheapest£531	Average£668	FlexibilityNo cancel fee	On-time72%	Search Virgin Atlantic flights
Iberia	Cheapest£546	Average£794	FlexibilityNo cancel fee	On-time77%	Search Iberia flights
KLM	Cheapest£558	Average£701	FlexibilityNo cancel fee	On-time75%	Search KLM flights

Fly with Cheapflights

How does Cheapflights help users find flights from London to Portland?

Cheapflights helps you search for flights from London to Portland 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 London to Portland?

Cheapflights helps you find that perfect flight to Portland from London 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 London to Portland with no change fees?

Cheapflights does show flights with no change fees to all users. To see these options for flights from London to Portland, users can toggle the no change fees filter when performing a flight search.

Can Cheapflights notify me if prices for flights from London to Portland become cheaper?

Yes, Cheapflights offers price alerts on London to Portland 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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Cheap flights from London to Portland from £510

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 11/6. Fares are subject to change and may not be available on all flights or dates of travel.

Cheapflights Tip: The best prices from London to Portland are usually found in March or February, booked 63 days in advance, depart on a Tuesday or Wednesday and return on a Friday

Cheap flight deals from London to Portland

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Good round-trip deal

Good one-way deal

Find flight deals from London to Portland

Cheapest flights from London to PortlandExplore the most affordable flight options available from London to Portland. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 29 April 2025.

Explore the most affordable flight options available from London to Portland. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 29 April 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from London to Portland that are best for you.

Best time to book a flight from London to Portland

Have a flexible travel schedule? Discover the best time to fly to Portland from London with our price prediction graph.

Cheapflights Insights

Everything you need to know about your flight from London to Portland

How far ahead should I book a flight from London to Portland?

Use this chart to determine the optimal time to book a return flight from London to Portland. Price data was last updated on 25 April 2025.

What is the cheapest month to book a flight from London to Portland?

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

Find hourly flight availability from London to Portland. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 29 April 2025.

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

Use this chart to determine the cheapest time to fly return from London to Portland. Price data was last updated on 20 October 2024.

Weekly flight availability from London to Portland

Explore weekly flight availability from London to Portland. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated 29 April 2025.

Rainfall in Portland by month

Plan your trip to Portland by taking into account the average rainfall totals by month.

Temperature in Portland by month

Plan your trip to Portland by taking into account the average temperature totals by month.

Reviews of airlines servicing Portland

Peruse reviews from past customers who have flown with Delta, KLM and Finnair from London to Portland to help guide your decision. 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 London to Portland. 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 into for flights to Portland from London?

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

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

What are the most popular routes from London to Portland?

What are the most reliable airlines from London to Portland?

What are the cheapest flights from London to Portland?

Can I find deals for flights from London to Portland that include hotel bookings?

How can I find direct flights from London to Portland?

Can I find deals for business class flights from London to Portland?

What is the cheapest month to book a flight from London to Portland?

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Fly from London to Portland on these airlines

Choose from the following airlines for your flight from London to Portland. Flights are based on user searches made on Cheapflights and were last updated on 29 April 2025.

Top 9 airlines flying from London to Portland

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Cheapest flights from London to Portland
Explore the most affordable flight options available from London to Portland. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 29 April 2025.