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

Currently priced at £542, 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 Virgin Atlantic and Delta - these airlines can fly you to your destination from £544 and £551, respectively. Icelandair is 18% 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 British Airways. According to our data, you can fly for as low as £503. Users have also found prices from £509 and £513 on Icelandair and WestJet, 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 £1,605, our data shows the cheapest flight currently is £470. When looking at the most popular route, (London Heathrow - Portland), you can expect to pay £475 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 (85%), Alaska Airlines (85%), Aer Lingus (85%).

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 17% 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 21% by booking at least 60 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 £571.

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 £664. You can even find prices in March for less than £664, as users have found deals to Portland from as low as £455. 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 39%.

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.

£414+ Flights from London to Portland

Cheapflights Tip: The best prices from London to Portland are usually found in March or February, booked 86 days in advance, depart on a Tuesday or Wednesday and return on a Friday

Cheap flight deals from London to Portland

Round-trip from	£542
One-way from	£414
Popular in	August
Cheapest in	March
Average price	£703
Good round-trip deal	£546 or less
Good one-way deal	£675 or less

Icelandair
26/8-6/9
2 total stops
49h 30m total
London to Portland

Search Deals

14/8
2 total stops
44h 27m total
London to Portland

Search Deals

Highest demand for flights based on searches. 15% potential increase in price (£93 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 June 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 13 June 2025.

Tue 26/821:25LHR - PDX

1 stop28h 30mIcelandair

Sat 6/915:20PDX - LHR

1 stop21h 00mIcelandair

Deal found 12/6£542

Thu 20/1108:20LHR - PDX

1 stop16h 29mBritish Airways

Sun 23/1118:30PDX - LHR

Nonstop9h 40mBritish Airways

Deal found 12/6£543

Wed 18/606:30LHR - PDX

1 stop12h 50mVirgin Atlantic

Tue 8/717:45PDX - LHR

1 stop12h 30mVirgin Atlantic

Deal found 11/6£544

Tue 23/909:20LCY - PDX

2 stops21h 00mVirgin Atlantic

Wed 1/1013:15PDX - LCY

1 stop20h 05mVirgin Atlantic

Deal found 11/6£545

Fri 21/1106:30LHR - PDX

1 stop12h 55mKLM

Fri 5/1213:37PDX - LHR

1 stop13h 23mKLM

Deal found 11/6£546

Mon 3/1111:55LGW - PDX

1 stop13h 05mIcelandair

Mon 8/1214:45PDX - LGW

1 stop12h 10mIcelandair

Deal found 11/6£548

Wed 20/809:55LHR - PDX

1 stop17h 15mMultiple Airlines

Sat 20/917:35PDX - LHR

2 stops42h 25mMultiple Airlines

Deal found 11/6£549

Wed 24/915:40LHR - PDX

Nonstop9h 55mAmerican Airlines

Sat 4/1019:25PDX - LHR

Nonstop9h 35mAmerican Airlines

Deal found 12/6£550

Sat 30/809:40LGW - PDX

2 stops35h 25mMultiple Airlines

Tue 9/919:40PDX - LGW

3 stops30h 10mMultiple Airlines

Deal found 11/6£555

Wed 25/606:30LHR - PDX

1 stop12h 50mDelta

Sun 26/421:45PDX - LHR

1 stop25h 00mDelta

Deal found 11/6£558

Wed 24/916:25LHR - PDX

1 stop34h 30mFinnair

Sun 5/1019:25PDX - LHR

Nonstop9h 35mFinnair

Deal found 12/6£580

Mon 8/915:50LHR - PDX

2 stops30h 56mAir Canada

Sat 13/919:40PDX - LHR

2 stops26h 55mAir Canada

Deal found 12/6£601

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 13 June 2025.

Tue 26/821:25LHR - PDX

1 stop28h 30mIcelandair

Sat 6/915:20PDX - LHR

1 stop21h 00mIcelandair

Deal found 12/6£542

Wed 18/606:30LHR - PDX

1 stop12h 50mVirgin Atlantic

Tue 8/717:45PDX - LHR

1 stop12h 30mVirgin Atlantic

Deal found 11/6£544

Wed 20/809:55LHR - PDX

1 stop17h 15mMultiple Airlines

Sat 20/917:35PDX - LHR

2 stops42h 25mMultiple Airlines

Deal found 11/6£549

Thu 21/809:55LHR - PDX

2 stops20h 24mDelta

Tue 9/908:55PDX - LHR

2 stops17h 35mDelta

Deal found 11/6£551

Fri 5/915:30LHR - PDX

1 stop16h 24mBritish Airways

Sat 20/913:12PDX - LHR

1 stop13h 53mBritish Airways

Deal found 11/6£553

Wed 2/712:00LHR - PDX

1 stop17h 19mAmerican Airlines

Tue 21/405:54PDX - LHR

1 stop16h 31mAmerican Airlines

Deal found 11/6£556

Mon 8/915:50LHR - PDX

2 stops30h 56mAir Canada

Sat 13/919:40PDX - LHR

2 stops26h 55mAir Canada

Deal found 12/6£601

Thu 19/616:25LHR - PDX

1 stop16h 11mIberia

Wed 2/700:09PDX - LHR

1 stop23h 11mIberia

Deal found 12/6£604

Sat 30/806:40LHR - PDX

2 stops22h 17mScandinavian Airlines

Tue 9/912:35PDX - LHR

3 stops21h 05mScandinavian Airlines

Deal found 11/6£620

Thu 19/620:55LHR - PDX

1 stop22h 10mKLM

Thu 26/606:55PDX - LHR

2 stops18h 05mKLM

Deal found 12/6£626

Fri 20/616:55LHR - PDX

1 stop37h 35mFinnair

Sat 19/719:25PDX - LHR

Nonstop9h 35mFinnair

Deal found 10/6£660

Wed 25/606:30LHR - PDX

2 stops24h 26mLufthansa

Mon 23/315:41PDX - LHR

1 stop13h 19mLufthansa

Deal found 11/6£683

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 13 June 2025.

Fri 5/915:40LHR - PDX

Nonstop9h 55mBritish Airways

Thu 18/919:25PDX - LHR

Nonstop9h 35mBritish Airways

Deal found 12/6£542

Wed 24/915:40LHR - PDX

Nonstop9h 55mAmerican Airlines

Sat 4/1019:25PDX - LHR

Nonstop9h 35mAmerican Airlines

Deal found 12/6£550

Thu 25/915:40LHR - PDX

Nonstop9h 55mMultiple Airlines

Thu 2/1019:25PDX - LHR

Nonstop9h 35mMultiple Airlines

Deal found 12/6£651

Wed 25/615:40LHR - PDX

Nonstop9h 55mIberia

Wed 29/419:25PDX - LHR

Nonstop9h 35mIberia

Deal found 11/6£764

Tue 1/715:40LHR - PDX

Nonstop9h 55mFinnair

Wed 22/419:25PDX - LHR

Nonstop9h 35mFinnair

Deal found 11/6£815

Last-minute flights from London to Portland
Discover last-minute flight deals from London to Portland. Data last updated 13 June 2025 and is based on user searches.

Wed 18/606:30LHR - PDX

1 stop12h 50mVirgin Atlantic

Tue 8/717:45PDX - LHR

1 stop12h 30mVirgin Atlantic

Deal found 11/6£544

Wed 18/615:10LHR - PDX

1 stop15h 48mAmerican Airlines

Thu 26/611:35PDX - LHR

1 stop17h 10mAmerican Airlines

Deal found 11/6£584

Thu 19/610:45LGW - PDX

1 stop33h 29mMultiple Airlines

Thu 3/713:19PDX - LGW

1 stop37h 36mMultiple Airlines

Deal found 11/6£564

Thu 19/615:10LHR - PDX

1 stop15h 48mBritish Airways

Thu 26/610:29PDX - LHR

1 stop12h 51mBritish Airways

Deal found 12/6£573

Thu 19/609:15LHR - PDX

1 stop15h 20mMultiple Airlines

Thu 3/715:14PDX - LHR

1 stop13h 36mMultiple Airlines

Deal found 12/6£587

Thu 19/616:25LHR - PDX

1 stop16h 11mIberia

Wed 2/700:09PDX - LHR

1 stop23h 11mIberia

Deal found 12/6£604

Thu 19/620:55LHR - PDX

1 stop22h 10mKLM

Thu 26/606:55PDX - LHR

2 stops18h 05mKLM

Deal found 12/6£626

Thu 19/614:45LHR - PDX

1 stop15h 45mFinnair

Thu 3/719:25PDX - LHR

Nonstop9h 35mFinnair

Deal found 12/6£647

Thu 19/621:25LHR - PDX

1 stop28h 30mIcelandair

Thu 3/715:20PDX - LHR

1 stop21h 00mIcelandair

Deal found 10/6£671

Thu 19/608:40LCY - PDX

2 stops23h 34mMultiple Airlines

Thu 3/710:30PDX - LCY

2 stops25h 10mMultiple Airlines

Deal found 12/6£697

Fri 20/616:55LHR - PDX

1 stop37h 35mFinnair

Sat 19/719:25PDX - LHR

Nonstop9h 35mFinnair

Deal found 10/6£660

Sat 21/621:10STN - PDX

2 stops27h 25mMultiple Airlines

Sun 29/618:35PDX - STN

2 stops21h 24mMultiple Airlines

Deal found 11/6£665

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 13 June 2025.

Thu 14/820:50LHR - PDX

2 stops44h 27mMultiple Airlines

Deal found 12/6£414

Sat 21/621:25LTN - PDX

2 stops47h 27mMultiple Airlines

Deal found 12/6£417

Mon 30/610:00LGW - PDX

2 stops33h 17mMultiple Airlines

Deal found 12/6£425

Wed 25/608:15STN - PDX

3 stops20h 08mMultiple Airlines

Deal found 11/6£428

Wed 9/707:00LCY - PDX

3 stops34h 18mMultiple Airlines

Deal found 12/6£480

Wed 3/915:40LHR - PDX

Nonstop9h 55mBritish Airways

Deal found 10/6£503

Tue 24/613:00LGW - PDX

1 stop12h 55mIcelandair

Deal found 11/6£509

Mon 23/621:25LHR - PDX

1 stop28h 30mIcelandair

Deal found 11/6£511

Mon 14/710:35LGW - PDX

2 stops34h 30mWestJet

Deal found 12/6£513

Tue 9/915:40LHR - PDX

Nonstop9h 55mIberia

Deal found 12/6£556

Mon 4/821:10LHR - PDX

2 stops33h 05mAer Lingus

Deal found 12/6£565

Thu 3/712:10LGW - PDX

1 stop18h 05mJetBlue

Deal found 12/6£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

Tue 26/8

21:25-17:55

1 stop28h 30m

Portland

Sat 6/9

15:20-20:20

1 stop21h 00m

£542

LondonPortland

LHR - PDX

LHRPDX

London Heathrow

Thu 20/11

08:20-16:49

1 stop16h 29m

Portland

Sun 23/11

18:30-12:10

Nonstop9h 40m

£543

LondonPortland

LHR - PDX

LHRPDX

London Heathrow

Tue 26/8

09:50-13:05

3 stops35h 15m

Portland

Sat 6/9

13:45-09:05

3 stops35h 20m

£544

LondonPortland

LCY - PDX

LCYPDX

London City

Tue 23/9

09:20-22:20

2 stops21h 00m

Portland

Wed 1/10

13:15-17:20

1 stop20h 05m

£545

LondonPortland

LHR - PDX

LHRPDX

London Heathrow

Fri 21/11

06:30-11:25

1 stop12h 55m

Portland

Fri 5/12

13:37-11:00

1 stop13h 23m

£546

LondonPortland

LHR - PDX

LHRPDX

London Heathrow

Fri 26/9

20:55-11:20

1 stop22h 25m

Portland

Fri 3/10

07:00-06:25

1 stop15h 25m

£547

LondonPortland

LGW - PDX

LGWPDX

London Gatwick

Mon 3/11

11:55-17:00

1 stop13h 05m

Portland

Mon 8/12

14:45-10:55

1 stop12h 10m

£548

LondonPortland

LHR - PDX

LHRPDX

London Heathrow

Wed 24/9

15:40-17:35

Nonstop9h 55m

Portland

Sat 4/10

19:25-13:00

Nonstop9h 35m

£550

LondonPortland

LGW - PDX

LGWPDX

London Gatwick

Sat 30/8

09:40-13:05

2 stops35h 25m

Portland

Tue 9/9

19:40-09:50

3 stops30h 10m

£555

LondonPortland

LHR - PDX

LHRPDX

London Heathrow

Wed 25/6

06:30-11:20

1 stop12h 50m

Portland

Sun 26/4

21:45-06:45

1 stop25h 00m

£558

Flights are sorted by cheapest return flights first.

Deals found on 12/6

Showing 1-10 of 50 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 86 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 21% 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

7,946 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Delta

8.0

Very Good

7,946 reviews

Delta

8.0

Very Good

7,946 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

KLM

7.8

Good

1,358 reviews

Delta

8.0

Very Good

7,946 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Finnair

7.6

Good

1,290 reviews

Delta

8.0

Very Good

7,946 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

SWISS

7.5

Good

1,624 reviews

Delta

8.0

Very Good

7,946 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Virgin Atlantic

7.4

Good

652 reviews

Delta

8.0

Very Good

7,946 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

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 £542, 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 Virgin Atlantic and Delta - these airlines can fly you to your destination from £544 and £551, respectively. Icelandair is 18% 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 British Airways. According to our data, you can fly for as low as £503. Users have also found prices from £509 and £513 on Icelandair and WestJet, 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 (85%), Alaska Airlines (85%), Aer Lingus (85%).
What are the cheapest flights from London to Portland?
While on average a flight from London to Portland is generally £1,605, our data shows the cheapest flight currently is £470. When looking at the most popular route, (London Heathrow - Portland), you can expect to pay £475 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

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Portland to London Heathrow Airport flights

Top 9 airlines flying from London to Portland

Airline	Cheapest	Average	Flexibility	On-time
Icelandair	Cheapest£433	Average£656	FlexibilityNo cancel fee	On-time76%	Search Icelandair flights
Finnair	Cheapest£481	Average£589	FlexibilityNo cancel fee	On-time76%	Search Finnair flights
United Airlines	Cheapest£483	Average£605	FlexibilityNo cancel fee	On-time69%	Search United Airlines flights
Air Canada	Cheapest£491	Average£533	FlexibilityNo cancel fee	On-time67%	Search Air Canada flights
Virgin Atlantic	Cheapest£501	Average£648	FlexibilityNo cancel fee	On-time72%	Search Virgin Atlantic flights
British Airways	Cheapest£503	Average£694	FlexibilityNo cancel fee	On-time70%	Search British Airways flights
Lufthansa	Cheapest£511	Average£614	FlexibilityNo cancel fee	On-time76%	Search Lufthansa flights
KLM	Cheapest£549	Average£689	FlexibilityNo cancel fee	On-time75%	Search KLM flights
Iberia	Cheapest£566	Average£752	FlexibilityNo cancel fee	On-time77%	Search Iberia 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 £414

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 14/8. 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 86 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 13 June 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 13 June 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 9 June 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 13 June 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 13 June 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 13 June 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 13 June 2025.