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Cheap flights from Portland to London from £214

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 30/9. Fares are subject to change and may not be available on all flights or dates of travel.
PDX — LON
23 Jun — 30 Jun1
1 adult

Cheapflights Tip: The best prices from Portland to London are usually found in November or October, booked 69 days in advance, depart on a Friday or Tuesday and return on a Tuesday

Cheap 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 18 June 2025.

Round-trip from

£521

One-way from

£214

Popular in

June

Cheapest in

November

Average price

£913

Good round-trip deal

£578 or less

Good one-way deal

£443 or less
Lufthansa
  • Lufthansa
  • 19/9-9/10
  • 4 total stops
  • 40h 06m total
  • Portland to London
30/9
  • 30/9
  • 2 total stops
  • 20h 40m total
  • Portland to London
Highest demand for flights based on searches. 22% potential increase in price (£131 potential increase over avg. return price).
Cheapest flight prices on average. 4% potential price decrease (£21 potential savings vs. average return price).
Average for round-trip flights in June 2025
Price to beat on a round-trip flight from Portland to London (LON).
Price to beat on a one-way flight from Portland to London (LON).

Find flight deals from Portland to London

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 18 June 2025.

Fri 19/910:00PDX - LHR
2 stops15h 35mLufthansa
Thu 9/1006:30LHR - PDX
2 stops24h 31mLufthansa
Deal found 17/6£521
Thu 21/814:50PDX - LGW
1 stop36h 05mMultiple Airlines
Sun 31/810:55LGW - PDX
1 stop16h 15mMultiple Airlines
Deal found 17/6£521
Sat 16/815:20PDX - LHR
1 stop12h 35mIcelandair
Mon 25/821:25LHR - PDX
1 stop28h 30mIcelandair
Deal found 17/6£521
Sun 7/915:20PDX - LGW
1 stop15h 20mIcelandair
Sat 13/915:40LGW - PDX
1 stop34h 15mIcelandair
Deal found 17/6£521
Thu 16/1010:00PDX - LHR
1 stop19h 20mMultiple Airlines
Mon 3/1120:05LHR - PDX
2 stops34h 28mMultiple Airlines
Deal found 17/6£523
Tue 19/810:51PDX - LCY
2 stops22h 39mSWISS
Tue 26/819:20LCY - PDX
2 stops35h 05mSWISS
Deal found 16/6£523
Wed 1/1010:00PDX - LHR
2 stops24h 30mScandinavian Airlines
Mon 6/1006:40LHR - PDX
2 stops23h 40mScandinavian Airlines
Deal found 16/6£524
Sun 12/1005:30PDX - LHR
1 stop24h 40mUnited Airlines
Sun 26/1014:30LHR - PDX
1 stop34h 54mUnited Airlines
Deal found 16/6£524
Thu 2/1019:25PDX - LHR
Nonstop9h 35mBritish Airways
Thu 9/1015:40LHR - PDX
Nonstop9h 55mBritish Airways
Deal found 17/6£528
Sun 3/807:00PDX - LGW
1 stop19h 00mDelta
Tue 12/812:00LGW - PDX
1 stop17h 31mDelta
Deal found 16/6£530
Thu 2/1010:46PDX - LGW
2 stops23h 04mSWISS
Tue 14/1018:35LGW - PDX
2 stops32h 11mSWISS
Deal found 17/6£531
Sun 10/807:00PDX - LHR
1 stop19h 15mDelta
Mon 25/811:30LHR - PDX
2 stops20h 22mDelta
Deal found 16/6£533

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 18 June 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

Fri 19/9

10:00-09:35

2 stops15h 35m

London Heathrow

Thu 9/10

06:30-23:01

2 stops24h 31m

£521

PortlandLondon

PDX - LGW

PDXLGW

Portland

Thu 21/8

14:50-10:55

1 stop36h 05m

London Gatwick

Sun 31/8

10:55-19:10

1 stop16h 15m

£521

PortlandLondon

PDX - LHR

PDXLHR

Portland

Sat 16/8

15:20-11:55

1 stop12h 35m

London Heathrow

Mon 25/8

21:25-17:55

1 stop28h 30m

£521

PortlandLondon

PDX - LGW

PDXLGW

Portland

Sun 7/9

15:20-14:40

1 stop15h 20m

London Gatwick

Sat 13/9

15:40-17:55

1 stop34h 15m

£521

PortlandLondon

PDX - LCY

PDXLCY

Portland

Tue 19/8

10:51-17:30

2 stops22h 39m

London City

Tue 26/8

19:20-22:25

2 stops35h 05m

£523

PortlandLondon

PDX - LHR

PDXLHR

Portland

Thu 16/10

15:25-13:20

1 stop13h 55m

London Heathrow

Mon 3/11

20:05-22:33

2 stops34h 28m

£523

PortlandLondon

PDX - LHR

PDXLHR

Portland

Wed 1/10

10:00-18:30

2 stops24h 30m

London Heathrow

Mon 6/10

06:40-22:20

2 stops23h 40m

£524

PortlandLondon

PDX - LHR

PDXLHR

Portland

Sun 12/10

19:35-07:25

1 stop27h 50m

London Heathrow

Mon 27/10

14:30-09:34

1 stop26h 04m

£524

PortlandLondon

PDX - LHR

PDXLHR

Portland

Thu 2/10

19:25-13:00

Nonstop9h 35m

London Heathrow

Thu 16/10

15:40-17:35

Nonstop9h 55m

£528

PortlandLondon

PDX - LGW

PDXLGW

Portland

Sun 3/8

07:00-10:00

1 stop19h 00m

London Gatwick

Tue 12/8

12:00-21:31

1 stop17h 31m

£530

Flights are sorted by cheapest return flights first.

Deals found on 18/6

Showing 1-10 of 54 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 13 June 2025.

Booking 69 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, January is the cheapest month in which you can book a flight from Portland to London (average of £112). Flying from Portland to London in August is currently the most expensive (average of £164). 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 18 June 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 24% versus a flight at midday.

Weekly flight availability from Portland to London

Explore weekly flight availability from Portland to London. 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 18 June 2025.

The most flights from PDX to LON 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 London by month

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

In terms of precipitation, rainfall in London ranges from 40.0 - 70.0 inches per month. January is typically the wettest month, when rainfall can reach 70.0 mm. July is typically the driest time to visit London when rainfall is around 40.0 mm.

Temperature in London by month

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

If weather is an important factor for your trip to London, 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 17.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 4.0 C).

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 18 June 2025.
Read reviews from past customers who have flown Delta, KLM and SWISS 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.

Crew

8.5

Boarding

8.2

Overall

8.0

Comfort

7.9

Food

7.3

Entertainment

7.9

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!
8.0
Very Good

Crew

8.5

Boarding

8.2

Overall

8.0

Comfort

7.9

Food

7.3

Entertainment

7.9

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!

Crew

8.5

Boarding

8.2

Overall

8.0

Comfort

7.9

Food

7.3

Entertainment

7.9

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!

Crew

8.5

Boarding

8.2

Overall

8.0

Comfort

7.9

Food

7.3

Entertainment

7.9

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!

Crew

8.5

Boarding

8.2

Overall

8.0

Comfort

7.9

Food

7.3

Entertainment

7.9

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!

Crew

8.5

Boarding

8.2

Overall

8.0

Comfort

7.9

Food

7.3

Entertainment

7.9

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

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 7 outbound flights to London per day. 4 airlines have flights to London from Portland on a regular basis.

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

    Cheapflights users have booked flights from Portland to London round-trip from £521. Other airlines that can offer you cheap pricing are Icelandair, from £521, and SWISS, from £523. Lufthansa is 14% cheaper than the average price of flights available within the next 90 days to this destination.

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

    £223 is the cheapest one-way deal found within the past few days, from Icelandair. You may also be able to find cheap deals on JetBlue and British Airways, with prices starting from £269 and £302, respectively.

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

  • 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 (82%), Alaska Airlines (82%) and Aer Lingus (82%).

  • What are the cheapest flights from Portland to London?

    Looking at all options, your cheapest flight can be booked for £443. While the most popular route (Portland - London Heathrow) can be booked for £405 on average our data indicates £1,532 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, January is the cheapest month in which you can book a flight from Portland to London (average of £112). Flying from Portland to London in August is currently the most expensive (average of £164). 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
Milton Keynes
Hounslow
Croydon
Deal
Gatwick
Luton
Slough
Wembley
Crawley
Eastbourne
Ilford
Watford
Hayes
Southend-on-Sea
Ipswich
Winchester
Folkestone
Maidstone
Chichester
Southall

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Top 4 airlines flying from Portland to London

Discover the top 4 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 18 June 2025.
AirlineCheapestAverageFlexibilityOn-time
Virgin AtlanticCheapest£428Average£497FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
IcelandairCheapest£434Average£2,384FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
IberiaCheapest£451Average£550FlexibilityNo cancel feeOn-time77%
Search Iberia flights
British AirwaysCheapest£464Average£545FlexibilityNo cancel feeOn-time70%
Search British Airways 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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