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Cheap flights from London to Portland from £457

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 28/11. Fares are subject to change and may not be available on all flights or dates of travel.
LON — PDX
12 Oct — 19 Oct1
1 adult
1 adult, Economy

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

Cheap flight deals from London to Portland

Discover tips and strategies to find the most affordable flight options for your journey from London (LON) to Portland (PDX). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 12 September 2025.

Round-trip from

£523

One-way from

£457

Popular in

July

Cheapest in

March

Average price

£576

Good round-trip deal

£571 or less

Good one-way deal

£772 or less
Air Canada
  • Air Canada
  • 21/9-11/10
  • 4 total stops
  • 68h 41m total
  • London to Portland
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British Airways
  • British Airways
  • 28/11
  • Nonstop
  • 10h 10m total
  • London to Portland
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Highest demand for flights based on searches. 14% potential increase in price (£83 potential increase over avg. return price).
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Cheapest flight prices on average. 2% potential price decrease (£12 potential savings vs. average return price).
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Average for round-trip flights in September 2025
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Price to beat on a round-trip flight from London (LON) to Portland.
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Price to beat on a one-way flight from London (LON) to Portland.
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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 12 September 2025.

Sun 21/910:15LHR - PDX
2 stops36h 31mAir Canada
Sat 11/1019:40PDX - LHR
2 stops32h 10mAir Canada
Deal found 11/9£523
Mon 6/1015:40LGW - PDX
1 stop34h 15mIcelandair
Mon 20/1015:20PDX - LGW
1 stop15h 15mIcelandair
Deal found 12/9£527
Wed 8/1015:10LHR - PDX
1 stop16h 19mBritish Airways
Sat 18/1019:25PDX - LHR
Nonstop9h 35mBritish Airways
Deal found 10/9£530
Mon 27/1010:05LHR - PDX
1 stop16h 09mBritish Airways
Mon 3/1117:45PDX - LHR
Nonstop9h 35mBritish Airways
Deal found 12/9£535
Tue 14/1006:30LHR - PDX
2 stops16h 16mUnited Airlines
Tue 21/1012:59PDX - LHR
1 stop14h 36mUnited Airlines
Deal found 11/9£535
Sat 11/1014:10LHR - PDX
1 stop16h 51mAir Canada
Sat 18/1015:25PDX - LHR
1 stop13h 55mAir Canada
Deal found 11/9£537
Wed 8/1010:55LGW - PDX
1 stop17h 54mMultiple Airlines
Sun 19/1007:00PDX - LGW
2 stops19h 55mMultiple Airlines
Deal found 10/9£538
Sun 26/1007:30LHR - PDX
2 stops22h 05mUnited Airlines
Sun 2/1116:02PDX - LHR
1 stop33h 38mUnited Airlines
Deal found 11/9£539
Fri 10/1006:50LHR - PDX
2 stops19h 41mUnited Airlines
Fri 17/1011:05PDX - LHR
1 stop15h 20mUnited Airlines
Deal found 10/9£541
Fri 10/1009:55LHR - PDX
1 stop21h 29mMultiple Airlines
Wed 15/1012:30PDX - LHR
1 stop20h 45mMultiple Airlines
Deal found 11/9£544
Fri 26/908:40LCY - PDX
2 stops22h 02mVirgin Atlantic
Mon 29/913:40PDX - LCY
2 stops20h 50mVirgin Atlantic
Deal found 12/9£546
Mon 27/1013:45LHR - PDX
Nonstop10h 10mAmerican Airlines
Mon 3/1117:45PDX - LHR
Nonstop9h 35mAmerican Airlines
Deal found 12/9£546

Cheapflights Fare Finder

 
Customise your flight search to find flights from London to Portland that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 12 September 2025.
Use the filters below to find and compare flights from London to Portland that are best for you.

Fly from

London

Fly to

Portland

Route

Depart

Return

Price

LondonPortland

LHR - PDX

LHRPDX

London Heathrow

Wed 8/10

15:10-23:29

1 stop16h 19m

Portland

Sun 19/10

19:25-13:00

Nonstop9h 35m

£530

LondonPortland

LHR - PDX

LHRPDX

London Heathrow

Tue 14/10

06:30-14:46

2 stops16h 16m

Portland

Tue 21/10

08:35-09:20

2 stops16h 45m

£535

LondonPortland

LHR - PDX

LHRPDX

London Heathrow

Fri 10/10

06:50-18:31

2 stops19h 41m

Portland

Fri 17/10

11:05-10:25

1 stop15h 20m

£541

LondonPortland

LCY - PDX

LCYPDX

London City

Fri 26/9

08:40-22:42

2 stops22h 02m

Portland

Mon 29/9

13:40-18:30

2 stops20h 50m

£546

LondonPortland

LCY - PDX

LCYPDX

London City

Mon 24/11

07:45-17:43

2 stops17h 58m

Portland

Wed 3/12

13:25-09:30

1 stop12h 05m

£547

LondonPortland

LCY - PDX

LCYPDX

London City

Mon 6/10

08:40-19:19

2 stops18h 39m

Portland

Mon 20/10

13:15-17:20

1 stop20h 05m

£547

LondonPortland

LCY - PDX

LCYPDX

London City

Mon 6/10

07:45-21:04

2 stops21h 19m

Portland

Mon 20/10

13:15-09:30

1 stop12h 15m

£547

LondonPortland

LCY - PDX

LCYPDX

London City

Wed 1/10

09:20-23:52

2 stops22h 32m

Portland

Mon 6/10

13:15-19:40

1 stop22h 25m

£548

LondonPortland

LCY - PDX

LCYPDX

London City

Wed 8/10

08:45-20:50

2 stops20h 05m

Portland

Sat 18/10

08:08-13:45

2 stops21h 37m

£551

LondonPortland

LGW - PDX

LGWPDX

London Gatwick

Fri 10/10

10:55-09:30

1 stop30h 35m

Portland

Wed 15/10

10:30-10:55

1 stop16h 25m

£554

Flights are sorted by cheapest return flights first.

Deals found on 11/9

Showing 1-10 of 60 results
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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?

Use this chart to determine the optimal time to book a return flight from London to Portland. Price data was last updated on 29 August 2025.

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?

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 12 September 2025.

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 17% versus a flight in the afternoon.

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.

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

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 12 September 2025.

The most flights from LON to PDX are scheduled on a Tuesday (7 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (2 on average).

How much does it cost for a return flight from London to Portland?

What’s the top stopover airport for flights from London to Portland?

Share of one-stop return flights from London to Portland chosen by Cheapflights users in the past 12 months, using the same stopover each way.

Reykjavik (KEF) – chosen by Cheapflights users on 46% of one-stop itineraries from London to Portland on Cheapflights.

What’s the cheapest stopover airport for flights from London to Portland?

Average return fare for one-stop flights from London to Portland, chosen by Cheapflights users in the past 12 months, with the same stopover each way.

Calgary (YYC) is the most affordable one-stop option, with an average return flight price of £466.

What’s the fastest stopover option from London to Portland?

Shortest average travel time for one-stop one-way flights from London to Portland, based on itineraries clicked by Cheapflights users over the past 12 months, grouped by stopover airport.

Flights via Vancouver (YVR) have the shortest average one-way travel time for one-stop routes: 12h 20m.

Which airport typically offers the quickest stopover for flights from London to Portland?

Average stopover duration for one-stop one-way flights from London to Portland, chosen by Cheapflights users in the last 12 months, grouped by stopover airport.

Flights via Salt Lake City (SLC) offer the fastest connection on this route, with an average stopover time of 1h 04m.

Reviews of airlines servicing Portland

Get insights into the airlines that provide service to Portland. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Portland. Reviews last updated 12 September 2025.
Read through reviews of airlines operating flights from London to Portland, such as Finnair, Virgin Atlantic, andIcelandair. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Finnair
7.6
Good
1,323 reviews
Check prices

Entertainment

6.9

Boarding

7.6

Comfort

7.5

Crew

8.1

Overall

7.6

Food

6.7

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2025

FRA - DFW

I was lucky I had a seet without no one next to me My vegetarian meal was excellent. The service very good. Although there was a lot of turbulences during the flight, the landing was very soft and took away all our apprehension.
Finnair
7.6
Good
1,323 reviews
Finnair
7.6
Good
1,323 reviews
Check prices

Entertainment

6.9

Boarding

7.6

Comfort

7.5

Crew

8.1

Overall

7.6

Food

6.7

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2025

FRA - DFW

I was lucky I had a seet without no one next to me My vegetarian meal was excellent. The service very good. Although there was a lot of turbulences during the flight, the landing was very soft and took away all our apprehension.
Virgin Atlantic
7.4
Good
664 reviews
Finnair
7.6
Good
1,323 reviews
Check prices

Entertainment

6.9

Boarding

7.6

Comfort

7.5

Crew

8.1

Overall

7.6

Food

6.7

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2025

FRA - DFW

I was lucky I had a seet without no one next to me My vegetarian meal was excellent. The service very good. Although there was a lot of turbulences during the flight, the landing was very soft and took away all our apprehension.
Icelandair
7.0
Good
546 reviews
Finnair
7.6
Good
1,323 reviews
Check prices

Entertainment

6.9

Boarding

7.6

Comfort

7.5

Crew

8.1

Overall

7.6

Food

6.7

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2025

FRA - DFW

I was lucky I had a seet without no one next to me My vegetarian meal was excellent. The service very good. Although there was a lot of turbulences during the flight, the landing was very soft and took away all our apprehension.
Lufthansa
6.8
Okay
7,409 reviews
Finnair
7.6
Good
1,323 reviews
Check prices

Entertainment

6.9

Boarding

7.6

Comfort

7.5

Crew

8.1

Overall

7.6

Food

6.7

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2025

FRA - DFW

I was lucky I had a seet without no one next to me My vegetarian meal was excellent. The service very good. Although there was a lot of turbulences during the flight, the landing was very soft and took away all our apprehension.
British Airways
6.7
Okay
7,361 reviews
Finnair
7.6
Good
1,323 reviews
Check prices

Entertainment

6.9

Boarding

7.6

Comfort

7.5

Crew

8.1

Overall

7.6

Food

6.7

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2025

FRA - DFW

I was lucky I had a seet without no one next to me My vegetarian meal was excellent. The service very good. Although there was a lot of turbulences during the flight, the landing was very soft and took away all our apprehension.

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?

    Most people fly into Portland (PDX) if they book a flight to Portland from London. On average, Portland has 6 inbound flights from London per day from 11 airlines. Portland is conveniently located just 6.0 mi from Portland’s city center.

  • How long is the flight from London to Portland?

    There are many flights that can get you from London to Portland in 16h 16m. Fly via British Airways, United Airlines, or Virgin Atlantic to get the fastest option. There are 4896 mi between London and Portland. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.

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

    Currently priced at £436, 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 Air Canada and Finnair - these airlines can fly you to your destination from £492 and £494, respectively. Icelandair 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 London to Portland one-way?

    For one-way options, check prices for Delta. According to our data, you can fly for as low as £458. Users have also found prices from £470 and £491 on Iberia and British Airways, 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 (60%), Alaska Airlines (60%), Aer Lingus (60%).

  • What are the cheapest flights from London to Portland?

    While on average a flight from London to Portland is generally £854, our data shows the cheapest flight currently is £534. When looking at the most popular route, (London Heathrow - Portland), you can expect to pay £411 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

Travelling to a place near Portland?

Book flights to Portland if you plan to visit one of these locations
Cannon Beach
Lincoln City

Browse thousands of different options on Cheapflights for your next trip

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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 12 September 2025.
British Airways flights from London to Portland
Finnair flights from London to Portland
Virgin Atlantic flights from London to Portland

Top 10 airlines flying from London to Portland

Discover the top 10 airlines that operate flights from London to Portland. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 12 September 2025.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest£436Average£590FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
Air CanadaCheapest£492Average£567FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
FinnairCheapest£494Average£590FlexibilityNo cancel feeOn-time76%
Search Finnair flights
LufthansaCheapest£500Average£607FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
Virgin AtlanticCheapest£501Average£655FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
British AirwaysCheapest£503Average£669FlexibilityNo cancel feeOn-time70%
Search British Airways flights
United AirlinesCheapest£530Average£602FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
KLMCheapest£548Average£793FlexibilityNo cancel feeOn-time75%
Search KLM flights
American AirlinesCheapest£551Average£700FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
IberiaCheapest£567Average£732FlexibilityNo cancel feeOn-time77%
Search Iberia flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

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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