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Cheap flights from the United Kingdom to Portland from £314

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 16/1. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — PDX
11 Dec — 18 Dec1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from United Kingdom to Portland

Keep the following information in mind while searching for United Kingdom to Portland flight deals. Data was last updated 11 November 2025.

Round-trip from

£537

One-way from

£314

Popular in

July

Cheapest in

September

Average price

£632

Good round-trip deal

£628 or less
Icelandair
  • Icelandair
  • 23/11-1/12
  • 2 total stops
  • 49h 10m total
  • United Kingdom to Portland
Search Deals
16/1
  • 16/1
  • 3 total stops
  • 46h 56m total
  • United Kingdom to Portland
Search Deals
Highest demand for flights based on searches. 13% potential increase in price (£80 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (£11 potential savings vs. average return price).
Search Deals
Average for round-trip flights in November 2025
Search Deals
Price to beat on a round-trip flight from United Kingdom to Portland.
Search Deals

Find flight deals from United Kingdom to Portland

Enter your travel dates to find the best prices.

Cheapest flights from United Kingdom to Portland
Explore the most affordable flight options available from United Kingdom to Portland. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 11 November 2025.

Sun 23/1120:35LHR - PDX
1 stop28h 25mIcelandair
Mon 1/1214:45PDX - LHR
1 stop20h 45mIcelandair
Deal found 9/11£537
Mon 8/1211:55LGW - PDX
1 stop13h 05mIcelandair
Mon 15/1214:45PDX - LGW
1 stop12h 10mIcelandair
Deal found 10/11£537
Mon 24/1112:15LHR - PDX
1 stop12h 45mIcelandair
Mon 8/1214:45PDX - LHR
1 stop20h 45mIcelandair
Deal found 9/11£540
Mon 24/1111:55LGW - PDX
1 stop13h 05mIcelandair
Mon 8/1214:45PDX - LGW
1 stop12h 10mIcelandair
Deal found 9/11£545
Mon 8/1212:15LHR - PDX
1 stop12h 45mIcelandair
Tue 16/1214:45PDX - LHR
1 stop12h 05mIcelandair
Deal found 8/11£551
Tue 9/1220:35LHR - PDX
1 stop28h 25mIcelandair
Mon 15/1214:45PDX - LHR
1 stop20h 45mIcelandair
Deal found 8/11£552
Fri 5/1211:55LGW - PDX
1 stop13h 05mIcelandair
Mon 15/1214:45PDX - LGW
1 stop12h 10mIcelandair
Deal found 8/11£558
Tue 2/1220:35LHR - PDX
1 stop28h 25mIcelandair
Tue 9/1214:45PDX - LHR
1 stop12h 05mIcelandair
Deal found 8/11£559
Sun 23/1111:55LGW - PDX
1 stop13h 05mIcelandair
Mon 1/1214:45PDX - LGW
1 stop12h 10mIcelandair
Deal found 9/11£571
Mon 8/1206:30LHR - PDX
2 stops20h 11mUnited Airlines
Mon 15/1205:00PDX - LHR
1 stop20h 40mUnited Airlines
Deal found 8/11£591
Mon 24/1114:30LHR - PDX
1 stop26h 45mAir Canada
Mon 8/1215:15PDX - LHR
1 stop12h 35mAir Canada
Deal found 9/11£592
Sun 7/1212:15LHR - PDX
1 stop12h 45mIcelandair
Tue 16/1214:45PDX - LHR
1 stop12h 05mIcelandair
Deal found 8/11£593

Cheapflights Fare Finder

 
Customise your flight search to find flights from United Kingdom 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 11 November 2025.
Use the filters below to find and compare flights from the United Kingdom to Portland that are best for you.

Fly from

United Kingdom

Fly to

Portland

Route

Depart

Return

Price

LondonPortland

LHR - PDX

LHRPDX

London Heathrow

Sat 7/3

20:35-17:00

1 stop28h 25m

Portland

Sat 14/3

15:45-19:30

1 stop20h 45m

£526

LondonPortland

LHR - PDX

LHRPDX

London Heathrow

Thu 5/3

20:35-17:00

1 stop28h 25m

Portland

Tue 10/3

15:45-10:50

1 stop12h 05m

£526

LondonPortland

LGW - PDX

LGWPDX

London Gatwick

Mon 24/11

11:55-17:00

1 stop13h 05m

Portland

Mon 8/12

14:45-10:55

1 stop12h 10m

£545

LondonPortland

LGW - PDX

LGWPDX

London Gatwick

Mon 8/12

11:55-17:00

1 stop13h 05m

Portland

Tue 16/12

14:45-10:55

1 stop12h 10m

£548

LondonPortland

LGW - PDX

LGWPDX

London Gatwick

Wed 10/12

11:55-17:00

1 stop13h 05m

Portland

Mon 15/12

14:45-10:55

1 stop12h 10m

£548

LondonPortland

LGW - PDX

LGWPDX

London Gatwick

Wed 10/12

11:55-17:00

1 stop13h 05m

Portland

Tue 16/12

14:45-10:55

1 stop12h 10m

£548

LondonPortland

LHR - PDX

LHRPDX

London Heathrow

Mon 8/12

06:30-18:41

2 stops20h 11m

Portland

Mon 15/12

05:00-09:40

1 stop20h 40m

£591

LondonPortland

LHR - PDX

LHRPDX

London Heathrow

Tue 9/12

11:45-11:25

1 stop31h 40m

Portland

Sun 14/12

00:32-07:05

1 stop22h 33m

£614

LondonPortland

LHR - PDX

LHRPDX

London Heathrow

Wed 10/12

06:30-11:25

1 stop12h 55m

Portland

Sun 14/12

00:32-07:05

1 stop22h 33m

£614

LondonPortland

LHR - PDX

LHRPDX

London Heathrow

Mon 8/12

06:30-11:25

1 stop12h 55m

Portland

Sun 14/12

00:32-07:05

1 stop22h 33m

£614

Flights are sorted by cheapest return flights first.

Deals found on 10/11

Showing 1-10 of 60 results
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Best time to book a flight from United Kingdom to Portland

Have a flexible travel schedule? Discover the best time to fly to Portland from United Kingdom 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 the United Kingdom to Portland

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

Currently, December is the cheapest month in which you can book a flight from United Kingdom to Portland (average of £448). Flying from United Kingdom to Portland in July is currently the most expensive (average of £570). 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 GB to PDX?

Find hourly flight availability from United Kingdom 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 11 November 2025.

When flying from United Kingdom to Portland, the time of day you fly usually plays a role in the price. Save by searching for a flight in the afternoon, which can drop the price by up to 11% versus a flight at midday.

What is the cheapest day to fly from United Kingdom to Portland?

Use this chart to determine the cheapest time to fly return from United Kingdom to Portland. Price data was last updated on 16 December 2024.

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

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 11 November 2025.
Read through reviews of airlines operating flights from the United Kingdom to Portland, such as KLM, Finnair, andVirgin Atlantic. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
KLM
7.7
Good
1,410 reviews
Check prices

Comfort

7.7

Crew

8.4

Boarding

7.8

Entertainment

7.1

Overall

7.7

Food

7.3

Reviews

1 / 20
2.0
Mediocre

Abisola,Oct 2025

LOS - CDG

The food option was finished and what wa left was vegan pasta so I had to go without food for an 8 hour flight without any sort of empathy from crew that was mean.
KLM
7.7
Good
1,410 reviews
KLM
7.7
Good
1,410 reviews
Check prices

Comfort

7.7

Crew

8.4

Boarding

7.8

Entertainment

7.1

Overall

7.7

Food

7.3

Reviews

1 / 20
2.0
Mediocre

Abisola,Oct 2025

LOS - CDG

The food option was finished and what wa left was vegan pasta so I had to go without food for an 8 hour flight without any sort of empathy from crew that was mean.
Finnair
7.6
Good
1,335 reviews
KLM
7.7
Good
1,410 reviews
Check prices

Comfort

7.7

Crew

8.4

Boarding

7.8

Entertainment

7.1

Overall

7.7

Food

7.3

Reviews

1 / 20
2.0
Mediocre

Abisola,Oct 2025

LOS - CDG

The food option was finished and what wa left was vegan pasta so I had to go without food for an 8 hour flight without any sort of empathy from crew that was mean.
Virgin Atlantic
7.5
Good
673 reviews
KLM
7.7
Good
1,410 reviews
Check prices

Comfort

7.7

Crew

8.4

Boarding

7.8

Entertainment

7.1

Overall

7.7

Food

7.3

Reviews

1 / 20
2.0
Mediocre

Abisola,Oct 2025

LOS - CDG

The food option was finished and what wa left was vegan pasta so I had to go without food for an 8 hour flight without any sort of empathy from crew that was mean.
Icelandair
7.1
Good
578 reviews
KLM
7.7
Good
1,410 reviews
Check prices

Comfort

7.7

Crew

8.4

Boarding

7.8

Entertainment

7.1

Overall

7.7

Food

7.3

Reviews

1 / 20
2.0
Mediocre

Abisola,Oct 2025

LOS - CDG

The food option was finished and what wa left was vegan pasta so I had to go without food for an 8 hour flight without any sort of empathy from crew that was mean.
British Airways
6.7
Okay
7,511 reviews
KLM
7.7
Good
1,410 reviews
Check prices

Comfort

7.7

Crew

8.4

Boarding

7.8

Entertainment

7.1

Overall

7.7

Food

7.3

Reviews

1 / 20
2.0
Mediocre

Abisola,Oct 2025

LOS - CDG

The food option was finished and what wa left was vegan pasta so I had to go without food for an 8 hour flight without any sort of empathy from crew that was mean.

Related info for your journey

Find useful and relevant information for your journey from United Kingdom 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 United Kingdom?

    For a flight from United Kingdom to Portland, you will be flying into Portland. Portland (PDX) is just 6.0 mi from the center of the city.

  • How long is the flight from United Kingdom to Portland?

    Airlines like Icelandair, United Airlines, and JetBlue fly from United Kingdom to Portland in about 18h 15m. The time it takes to get you to your destination can typically vary by up to 10h 10m. Airlines will cover a distance of 4584 mi. Both multi-stop and direct flights can be found to your destination and back.

  • What are the cheapest airlines to fly from United Kingdom to Portland one-way?

    The cheapet airlines for a one-way flight from United Kingdom to Portland are British Airways (£396), Lufthansa (£397), and SWISS (£447).

  • What are the most popular routes from United Kingdom to Portland?

    Most travelers choose London Heathrow - Portland, Manchester - Portland or London Gatwick - Portland when deciding on the best route from United Kingdom to Portland.

  • What are the most reliable airlines from United Kingdom 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 United Kingdom to Portland on time: American Airlines (59%), Alaska Airlines (59%), Finnair (59%).

  • What are the cheapest flights from United Kingdom to Portland?

    Looking at all options, your cheapest flight can be booked for £602. While the most popular route (London Heathrow - Portland) can be booked for £419 on average, our data indicates £982 when flying from United Kingdom to Portland.

  • Can I find deals for flights from United Kingdom to Portland that include hotel bookings?

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

  • How can I find direct flights from United Kingdom to Portland?

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

  • Can I find deals for business class flights from United Kingdom to Portland?

    Yes. Cheapflights offers flight deals from United Kingdom 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 United Kingdom to Portland?

    Currently, December is the cheapest month in which you can book a flight from United Kingdom to Portland (average of £448). Flying from United Kingdom to Portland in July is currently the most expensive (average of £570). 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

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Alternative routes for United Kingdom to Portland

See prices for flight routes from nearby airports that may be better suited for you.
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London City to Medford flights
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Southampton to Boise flights
Inverness to Boise flights
Edinburgh to Boise flights
Birmingham to Boise flights
Bristol to Portland flights
London City to Redmond flights

Top 10 airlines flying from United Kingdom to Portland

Discover the top 10 airlines that operate flights from United Kingdom 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 11 November 2025.
AirlineCheapestAverageFlexibilityOn-time
Scandinavian AirlinesCheapest£422Average£605FlexibilityNo cancel feeOn-time77%
Search Scandinavian Airlines flights
IcelandairCheapest£436Average£654FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
United AirlinesCheapest£439Average£681FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
Air CanadaCheapest£506Average£641FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
British AirwaysCheapest£507Average£709FlexibilityNo cancel feeOn-time70%
Search British Airways flights
FinnairCheapest£512Average£675FlexibilityNo cancel feeOn-time76%
Search Finnair flights
LufthansaCheapest£515Average£661FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
Virgin AtlanticCheapest£521Average£744FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
KLMCheapest£532Average£778FlexibilityNo cancel feeOn-time75%
Search KLM flights
American AirlinesCheapest£551Average£704FlexibilityNo cancel feeOn-time71%
Search American Airlines 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 United Kingdom to Portland?

Deals for United Kingdom to Portland flights are sourced from 900+ travel sites when you use Cheapflights. When all flight results come back, Cheapflights lets you sort and filter flights using different criteria to choose better, like price, airport, cabin class, and plenty of other options.

Why should you use Cheapflights to find cheap flight tickets from United Kingdom to Portland?

Cheapflights simply makes it quick and affordable to book flights from United Kingdom to Portland by bringing together all flight options from hundreds of airlines and agencies online — and put it in one place for you to choose from. Plus, Cheapflights is 100% free to use for all.

Can Cheapflights find flights from United Kingdom to Portland with no change fees?

Certainly. Search results for flights to Portland from United Kingdom shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

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

Yes, and it’s super simple to set up. Click the bell icon next to the flight deals above and provide a valid email address to enable Price Alerts. That’s it!

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