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Cheap flights from Portland to London from £218

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 31/1. Fares are subject to change and may not be available on all flights or dates of travel.
PDX — LON
11 Jan — 18 Jan1
1 adult
1 adult, Economy, 0 bags

Cheapflights Tip: The best prices from Portland to London are usually found in October or November, booked 46 days in advance, depart on a Friday or Wednesday and return on a Wednesday

Cheap flight deals from Portland to London

Enter your travel dates to find the best prices.

Cheapest flights from Portland to London
Explore the most affordable flight options available from Portland to London. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 12 December 2025.

Tue 30/1207:30PDX - LHR
1 stop20h 30mLufthansa
Sun 8/211:10LHR - PDX
2 stops21h 29mLufthansa
Deal found 11/12£542
Fri 12/1209:50PDX - LHR
1 stop18h 00mLufthansa
Fri 16/111:10LHR - PDX
2 stops21h 21mLufthansa
Deal found 11/12£566
Fri 12/1209:50PDX - LHR
1 stop18h 00mLufthansa
Fri 30/106:30LHR - PDX
2 stops20h 00mLufthansa
Deal found 10/12£567
Tue 30/1206:15PDX - LHR
1 stop16h 50mKLM
Sun 8/206:30LHR - PDX
1 stop12h 55mKLM
Deal found 10/12£568
Wed 24/1206:50PDX - LHR
1 stop19h 40mDelta
Fri 16/106:30LHR - PDX
1 stop12h 55mDelta
Deal found 10/12£580
Wed 10/1206:00PDX - LHR
2 stops20h 10mMultiple Airlines
Wed 17/1210:05LHR - PDX
1 stop22h 36mMultiple Airlines
Deal found 9/12£582
Wed 24/1215:15PDX - LHR
1 stop12h 35mMultiple Airlines
Fri 16/106:30LHR - PDX
2 stops20h 00mMultiple Airlines
Deal found 10/12£584
Tue 30/1215:15PDX - LHR
2 stops34h 05mAir Canada
Sun 8/215:00LHR - PDX
2 stops26h 15mAir Canada
Deal found 11/12£585
Fri 12/1207:00PDX - LHR
1 stop16h 55mBrussels Airlines
Fri 16/110:25LHR - PDX
1 stop16h 31mBrussels Airlines
Deal found 11/12£586
Fri 26/1209:50PDX - LHR
1 stop18h 00mLufthansa
Fri 16/106:30LHR - PDX
2 stops20h 00mLufthansa
Deal found 11/12£591
Thu 11/1215:15PDX - LHR
1 stop12h 35mAir Canada
Thu 25/1214:30LHR - PDX
1 stop26h 45mAir Canada
Deal found 11/12£592
Thu 11/1215:15PDX - LHR
2 stops34h 05mAir Canada
Wed 24/1213:25LHR - PDX
2 stops37h 05mAir Canada
Deal found 11/12£593

Find flight deals from Portland to London

Discover tips and strategies to find the most affordable flight options for your journey from Portland (PDX) to London (LON). 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 December 2025.

Round-trip from

£448

One-way from

£218

Popular in

June

Cheapest in

October

Average price

£687

Good round-trip deal

£1,364 or less

Good one-way deal

£3,180 or less
Icelandair
  • Icelandair
  • 9/4-17/4
  • 2 total stops
  • 25h 20m total
  • Portland to London
Search Deals
31/1
  • 31/1
  • 3 total stops
  • 33h 12m total
  • Portland to London
Search Deals
Highest demand for flights based on searches. 23% potential increase in price (£136 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease (£21 potential savings vs. average return price).
Search Deals
Average for round-trip flights in December 2025
Search Deals
Price to beat on a round-trip flight from Portland to London (LON).
Search Deals
Price to beat on a one-way flight from Portland to London (LON).
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from Portland to London 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 December 2025.
Use the filters below to find and compare flights from Portland to London that are best for you.

Fly from

Portland

Fly to

London

Route

Depart

Return

Price

PortlandLondon

PDX - LHR

PDXLHR

Portland

Sun 8/2

10:30-18:30

2 stops24h 00m

London Heathrow

Thu 12/2

06:40-22:24

2 stops23h 44m

£449

PortlandLondon

PDX - LHR

PDXLHR

Portland

Mon 2/2

13:02-21:35

3 stops24h 33m

London Heathrow

Mon 9/2

06:40-22:20

2 stops23h 40m

£451

PortlandLondon

PDX - LHR

PDXLHR

Portland

Mon 2/3

10:24-21:35

3 stops27h 11m

London Heathrow

Sun 8/3

10:20-22:23

2 stops19h 03m

£451

PortlandLondon

PDX - LHR

PDXLHR

Portland

Tue 10/2

07:00-08:05

1 stop17h 05m

London Heathrow

Wed 25/2

06:30-11:25

1 stop12h 55m

£459

PortlandLondon

PDX - LHR

PDXLHR

Portland

Wed 18/3

13:45-10:00

1 stop13h 15m

London Heathrow

Tue 31/3

06:30-11:10

1 stop12h 40m

£462

PortlandLondon

PDX - LHR

PDXLHR

Portland

Wed 14/1

13:30-10:30

1 stop13h 00m

London Heathrow

Wed 28/1

06:30-11:25

1 stop12h 55m

£462

PortlandLondon

PDX - LHR

PDXLHR

Portland

Sun 18/1

13:30-10:30

1 stop13h 00m

London Heathrow

Wed 28/1

06:30-11:25

1 stop12h 55m

£462

PortlandLondon

PDX - LHR

PDXLHR

Portland

Wed 14/1

09:50-11:50

1 stop18h 00m

London Heathrow

Wed 28/1

20:05-22:32

2 stops34h 27m

£462

PortlandLondon

PDX - LHR

PDXLHR

Portland

Tue 10/2

11:10-13:45

2 stops18h 35m

London Heathrow

Wed 25/2

06:30-11:25

1 stop12h 55m

£465

PortlandLondon

PDX - LHR

PDXLHR

Portland

Sun 11/1

21:45-06:20

2 stops24h 35m

London Heathrow

Wed 4/2

06:30-11:25

1 stop12h 55m

£465

Flights are sorted by cheapest return flights first.

Deals found on 10/12

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

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

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

Use this chart to determine the optimal time to book a return flight from Portland to London. Price data was last updated on 5 December 2025.

Booking 46 days in advance of your planned departure date is, on average, the best time to get cheap flights from Portland to London. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

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

Currently, December is the cheapest month in which you can book a flight from Portland to London (average of £390). Flying from Portland to London in June is currently the most expensive (average of £621). 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 PDX to LON?

Find hourly flight availability from Portland to London. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 12 December 2025.

When flying from Portland to London, the time of day you fly usually plays a role in the price. Save by searching for a flight in the evening, which can drop the price by up to 26% versus a flight at midday.

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

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

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

Reykjavik (KEF) – chosen by Cheapflights users on 48% of one-stop itineraries from Portland to London on Cheapflights.

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

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

Reykjavik (KEF) is the most affordable one-stop option, with an average return flight price of £374.

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

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

Flights via Seattle (SEA) have the shortest average one-way travel time for one-stop routes: 11h 16m.

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

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

Flights via Seattle (SEA) offer the fastest connection on this route, with an average stopover time of 1h 07m.

Reviews of airlines servicing London

Get insights into the airlines that provide service to London. 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 London. Reviews last updated 12 December 2025.
Read reviews from past customers who have flown with Virgin Atlantic, Iberia, andBritish Airways from Portland to London. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Virgin Atlantic
7.5
Good
675 reviews
Check prices

Entertainment

7.5

Crew

8.2

Boarding

7.7

Overall

7.5

Food

6.9

Comfort

7.3

Reviews

1 / 20
6.0
Good

Pratap,Aug 2025

JFK - LHR

The flight is clean, food good and the staff are excellent! Very professional, polite and accommodating. The seat itself is really mediocre. Can’t believe there is not inch of storage space. Believe it or not it there is not place even to put away your phone or pen!! Very very surprising and terribly inconvenient. No coat hanger hook either. Had to give it away. ALL IN ALL VERY INCONVENIENT business class seat compared to their peers. What is even more surprising is that this on their relatively new fleet of Airbus A350-1000. I was having com platelets different expectations of Virgin and this has disappointed me. Everything else is just as good and as you would expect from Virgin!
Virgin Atlantic
7.5
Good
675 reviews
Virgin Atlantic
7.5
Good
675 reviews
Check prices

Entertainment

7.5

Crew

8.2

Boarding

7.7

Overall

7.5

Food

6.9

Comfort

7.3

Reviews

1 / 20
6.0
Good

Pratap,Aug 2025

JFK - LHR

The flight is clean, food good and the staff are excellent! Very professional, polite and accommodating. The seat itself is really mediocre. Can’t believe there is not inch of storage space. Believe it or not it there is not place even to put away your phone or pen!! Very very surprising and terribly inconvenient. No coat hanger hook either. Had to give it away. ALL IN ALL VERY INCONVENIENT business class seat compared to their peers. What is even more surprising is that this on their relatively new fleet of Airbus A350-1000. I was having com platelets different expectations of Virgin and this has disappointed me. Everything else is just as good and as you would expect from Virgin!
Iberia
7.0
Good
3,045 reviews
Virgin Atlantic
7.5
Good
675 reviews
Check prices

Entertainment

7.5

Crew

8.2

Boarding

7.7

Overall

7.5

Food

6.9

Comfort

7.3

Reviews

1 / 20
6.0
Good

Pratap,Aug 2025

JFK - LHR

The flight is clean, food good and the staff are excellent! Very professional, polite and accommodating. The seat itself is really mediocre. Can’t believe there is not inch of storage space. Believe it or not it there is not place even to put away your phone or pen!! Very very surprising and terribly inconvenient. No coat hanger hook either. Had to give it away. ALL IN ALL VERY INCONVENIENT business class seat compared to their peers. What is even more surprising is that this on their relatively new fleet of Airbus A350-1000. I was having com platelets different expectations of Virgin and this has disappointed me. Everything else is just as good and as you would expect from Virgin!
British Airways
6.7
Okay
7,571 reviews
Virgin Atlantic
7.5
Good
675 reviews
Check prices

Entertainment

7.5

Crew

8.2

Boarding

7.7

Overall

7.5

Food

6.9

Comfort

7.3

Reviews

1 / 20
6.0
Good

Pratap,Aug 2025

JFK - LHR

The flight is clean, food good and the staff are excellent! Very professional, polite and accommodating. The seat itself is really mediocre. Can’t believe there is not inch of storage space. Believe it or not it there is not place even to put away your phone or pen!! Very very surprising and terribly inconvenient. No coat hanger hook either. Had to give it away. ALL IN ALL VERY INCONVENIENT business class seat compared to their peers. What is even more surprising is that this on their relatively new fleet of Airbus A350-1000. I was having com platelets different expectations of Virgin and this has disappointed me. Everything else is just as good and as you would expect from Virgin!

Related info for your journey

Find useful and relevant information for your journey from Portland to London. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

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

    For a flight from Portland to London, you will be flying from Portland. Portland (PDX) is just 6.0 mi from the center of the city. Portland is the only Portland airport and it handles 3 outbound flights to London per day. 3 airlines have flights to London from Portland on a regular basis.

  • How long is the flight from Portland to London?

    For as low as £459, Scandinavian Airlines can have you in London from Portland in 17h 05m. The distance between Portland and London is about 4896 mi. This flight may include one or multiple stops.

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

    Cheapflights users have booked flights from Portland to London round-trip from £384. Other airlines that can offer you cheap pricing are Icelandair, from £440, and Iberia, from £455. British Airways is 36% cheaper than the average price of flights available within the next 90 days to this destination.

  • What are the most popular routes from Portland to London?

    When deciding which route to take from Portland to London consider Portland - London Heathrow, Portland - London Gatwick or Portland - London City as they are the most popular.

  • What are the most reliable airlines from Portland to London?

    The top 3 most reliable airlines when flying from Portland to London are American Airlines (76%), Alaska Airlines (76%) and Finnair (76%).

  • What are the cheapest flights from Portland to London?

    Looking at all options, your cheapest flight can be booked for £1,364. While the most popular route (Portland - London Heathrow) can be booked for £366 on average, our data indicates £2,281 when flying from Portland to London.

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

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

  • How can I find direct flights from Portland to London?

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

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

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

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

    Currently, December is the cheapest month in which you can book a flight from Portland to London (average of £390). Flying from Portland to London in June is currently the most expensive (average of £621). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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Top 3 airlines flying from Portland to London

Discover the top 3 airlines that operate flights from Portland to London. 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 December 2025.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest£384Average£540FlexibilityNo cancel feeOn-time70%
Search British Airways flights
IcelandairCheapest£440Average£449FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
IberiaCheapest£455Average£519FlexibilityNo 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 Portland to London?

When you search for this flight from Portland to London, Cheapflights searches on 900+ travel sites to save you time finding great flight deals online. Additionally, we offer filter features so you can choose a preferred cabin class or airline, see different price ranges, and much more so you can book the flight for you.

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

Millions of users choose and trust Cheapflights to book the best flight deals from Portland to London for free. We help you search and compare prices from hundreds of airlines for the right flight just for you.

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

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

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

Of course! You can now track prices for flights from Portland to London and get an alert from Cheapflights when they change. Have a valid email address ready and click the bell icon next to the flight deals above to set up your price alerts.

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