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$275+ Cheap flights from Portland (PDX) to the United Kingdom

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 12/2. Fares are subject to change and may not be available on all flights or dates of travel.
PDX — LHR
nov 23 — nov 301
dom 11/23
dom 11/30
1 adult, Economy
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Cheap flight deals from Portland to United Kingdom

Keep the following information in mind while searching for Portland to United Kingdom flight deals. Data was last updated outubro 24, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$496
(FlightHub)

One-way from

$275
(Mytrip)

Popular in

June

Cheapest in

October

Average price

$656

Good round-trip deal

$688 or less

Good one-way deal

$575 or less
Provider with most accurate pricing for Portland-London (LON) flight deals.
Search Deals
Provider most trusted by Cheapflights users for Portland-London (LON) flights.
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From Portland to United Kingdom
Search Deals
One-way flight from Portland to United Kingdom
Search Deals
Highest demand for flights based on searches. 22% potential increase in price ($239 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($37 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in October 2025
Search Deals
Price to beat on a round-trip flight from Portland to United Kingdom.
Search Deals
Price to beat on a one-way flight from Portland to United Kingdom.
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Find flight deals from Portland to United Kingdom

Cheapest flights from Portland to United Kingdom
Explore the most affordable flight options available from Portland to United Kingdom. Find the lowest fares from popular airlines and budget airlines, with prices last updated on outubro 24, 2025.

This FlightHub deal was found by Cheapflights users on 10/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ter 11/42:45 pmPDX - MAN
1 stop12h 00mIcelandair
dom 11/911:55 amMAN - PDX
1 stop13h 05mIcelandair
Deal found 10/21$502
This Cheapflightsfares deal was found by Cheapflights users on 10/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ter 12/22:45 pmPDX - GLA
1 stop11h 10mIcelandair
qua 12/1012:35 pmGLA - PDX
1 stop12h 25mIcelandair
Deal found 10/21$506
This Icelandair deal was found by Cheapflights users on 10/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
qui 11/62:45 pmPDX - MAN
1 stop12h 15mIcelandair
dom 11/2311:55 amMAN - PDX
1 stop13h 05mIcelandair
Deal found 10/23$524
This lol.travel deal was found by Cheapflights users on 10/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure lol.travel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
seg 11/33:19 pmPDX - LHR
1 stop13h 31mVirgin Atlantic
qua 11/196:30 amLHR - PDX
1 stop12h 55mVirgin Atlantic
Deal found 10/22$541
This Icelandair deal was found by Cheapflights users on 10/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ter 11/42:45 pmPDX - LGW
1 stop12h 10mIcelandair
sex 11/2111:55 amLGW - PDX
1 stop13h 05mIcelandair
Deal found 10/23$541
This KAYAK deal was found by Cheapflights users on 10/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ter 11/42:45 pmPDX - LHR
1 stop20h 45mIcelandair
sex 11/2112:15 pmLHR - PDX
1 stop12h 45mIcelandair
Deal found 10/23$545
This KAYAK deal was found by Cheapflights users on 10/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ter 11/42:45 pmPDX - LHR
1 stop20h 45mIcelandair
ter 11/258:35 pmLHR - PDX
1 stop28h 25mIcelandair
Deal found 10/23$546
This SmartFares deal was found by Cheapflights users on 10/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ter 11/42:45 pmPDX - LHR
1 stop20h 45mIcelandair
ter 11/118:35 pmLHR - PDX
1 stop28h 25mIcelandair
Deal found 10/23$548
This Gurufare deal was found by Cheapflights users on 10/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb 11/292:45 pmPDX - LGW
1 stop12h 10mIcelandair
dom 12/1411:55 amLGW - PDX
1 stop13h 05mIcelandair
Deal found 10/23$549
This KLM deal was found by Cheapflights users on 10/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
qua 11/261:25 pmPDX - INV
1 stop15h 20mKLM
sáb 12/64:10 pmINV - PDX
1 stop27h 15mKLM
Deal found 10/21$551
This FlightHub deal was found by Cheapflights users on 10/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ter 11/42:45 pmPDX - MAN
1 stop12h 00mIcelandair
dom 11/2311:55 amMAN - PDX
1 stop13h 05mIcelandair
Deal found 10/23$552
This American Airlines deal was found by Cheapflights users on 10/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
qua 11/267:08 amPDX - INV
2 stops19h 47mMultiple Airlines
sáb 12/612:35 pmINV - PDX
2 stops30h 30mMultiple Airlines
Deal found 10/21$555

Cheapflights Fare Finder

 
Customize your flight search to find flights from Portland to United Kingdom 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 2,558,603 searches. Data last updated outubro 24, 2025.
Use the filters below to find and compare flights from Portland to the United Kingdom that are best for you.

Fly from

Portland

Fly to

United Kingdom

Route

Depart

Return

Price

PortlandManchester

PDX - MAN

PDXMAN

Portland

qui 11/6

2:45 pm-11:00 am

1 stop12h 15m

Manchester

sex 11/21

11:55 am-5:00 pm

1 stop13h 05m

$524

PortlandManchester

PDX - MAN

PDXMAN

Portland

qui 11/6

2:45 pm-11:00 am

1 stop12h 15m

Manchester

dom 11/23

11:55 am-5:00 pm

1 stop13h 05m

$524

PortlandLondon

PDX - LGW

PDXLGW

Portland

qui 11/27

2:45 pm-10:55 am

1 stop12h 10m

London Gatwick

seg 12/15

11:55 am-5:00 pm

1 stop13h 05m

$540

PortlandLondon

PDX - LGW

PDXLGW

Portland

sáb 11/29

2:45 pm-10:55 am

1 stop12h 10m

London Gatwick

seg 12/15

11:55 am-5:00 pm

1 stop13h 05m

$540

PortlandLondon

PDX - LGW

PDXLGW

Portland

ter 11/4

2:45 pm-10:55 am

1 stop12h 10m

London Gatwick

sex 11/21

11:55 am-5:00 pm

1 stop13h 05m

$541

PortlandInverness

PDX - INV

PDXINV

Portland

qua 11/26

1:25 pm-12:45 pm

1 stop15h 20m

Inverness

sáb 12/6

4:10 pm-11:25 am

1 stop27h 15m

$551

PortlandInverness

PDX - INV

PDXINV

Portland

qua 11/26

7:08 am-10:55 am

2 stops19h 47m

Inverness

sáb 12/6

12:35 pm-11:05 am

2 stops30h 30m

$555

PortlandInverness

PDX - INV

PDXINV

Portland

dom 3/1

5:45 pm-11:50 am

1 stop34h 05m

Inverness

qua 3/11

10:30 am-4:55 pm

1 stop13h 25m

$559

PortlandInverness

PDX - INV

PDXINV

Portland

dom 3/1

7:00 am-11:10 am

2 stops20h 10m

Inverness

qua 3/11

10:30 am-10:15 am

2 stops30h 45m

$563

PortlandLondon

PDX - LHR

PDXLHR

Portland

seg 11/3

12:40 am-7:05 am

1 stop22h 25m

London Heathrow

sex 11/21

6:30 am-11:25 am

1 stop12h 55m

$583

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/23

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

Have a flexible travel schedule? Discover the best time to fly to United Kingdom from Portland with our price prediction graph.
Estimated round-trip 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 the United Kingdom

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

Currently, November is the cheapest month in which you can book a flight from Portland to United Kingdom (average of $519). Flying from Portland to United Kingdom in June is currently the most expensive (average of $808). 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 GB?

Find hourly flight availability from Portland to United Kingdom. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated outubro 24, 2025.

One of the essential ways to save on airfare from Portland to United Kingdom is to remain as flexible as possible. Flights that are in the evening tend to be the most expensive. A flight in the afternoon could potentially save you up to 20% on airfare.

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

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

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

Reviews of airlines servicing United Kingdom

Get insights into the airlines that provide service to United Kingdom. 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 United Kingdom. Reviews last updated outubro 24, 2025.
Peruse reviews from past customers who have flown with Delta, American Airlines, and Icelandair from Portland to the United Kingdom 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
7.9
Good
7,982 reviews

Entertainment

7.9

Boarding

8.2

Overall

7.9

Crew

8.5

Food

7.3

Comfort

7.9

Reviews

1 / 20
8.0
Excellent

Matthew,Oct 2025

GSP - ATL

This is always a full flight since it is the connecting route to primary destinations through Atlanta. That said, the crew handles the full load well. Not much more to say, it is a short flight with no in-flight services due to the length.
Delta
7.9
Good
7,982 reviews
Delta
7.9
Good
7,982 reviews

Entertainment

7.9

Boarding

8.2

Overall

7.9

Crew

8.5

Food

7.3

Comfort

7.9

Reviews

1 / 20
8.0
Excellent

Matthew,Oct 2025

GSP - ATL

This is always a full flight since it is the connecting route to primary destinations through Atlanta. That said, the crew handles the full load well. Not much more to say, it is a short flight with no in-flight services due to the length.
American Airlines
7.2
Good
11,033 reviews
Delta
7.9
Good
7,982 reviews

Entertainment

7.9

Boarding

8.2

Overall

7.9

Crew

8.5

Food

7.3

Comfort

7.9

Reviews

1 / 20
8.0
Excellent

Matthew,Oct 2025

GSP - ATL

This is always a full flight since it is the connecting route to primary destinations through Atlanta. That said, the crew handles the full load well. Not much more to say, it is a short flight with no in-flight services due to the length.
Icelandair
7.1
Good
561 reviews
Delta
7.9
Good
7,982 reviews

Entertainment

7.9

Boarding

8.2

Overall

7.9

Crew

8.5

Food

7.3

Comfort

7.9

Reviews

1 / 20
8.0
Excellent

Matthew,Oct 2025

GSP - ATL

This is always a full flight since it is the connecting route to primary destinations through Atlanta. That said, the crew handles the full load well. Not much more to say, it is a short flight with no in-flight services due to the length.
Iberia
7.0
Good
2,997 reviews
Delta
7.9
Good
7,982 reviews

Entertainment

7.9

Boarding

8.2

Overall

7.9

Crew

8.5

Food

7.3

Comfort

7.9

Reviews

1 / 20
8.0
Excellent

Matthew,Oct 2025

GSP - ATL

This is always a full flight since it is the connecting route to primary destinations through Atlanta. That said, the crew handles the full load well. Not much more to say, it is a short flight with no in-flight services due to the length.
British Airways
6.7
Okay
7,469 reviews
Delta
7.9
Good
7,982 reviews

Entertainment

7.9

Boarding

8.2

Overall

7.9

Crew

8.5

Food

7.3

Comfort

7.9

Reviews

1 / 20
8.0
Excellent

Matthew,Oct 2025

GSP - ATL

This is always a full flight since it is the connecting route to primary destinations through Atlanta. That said, the crew handles the full load well. Not much more to say, it is a short flight with no in-flight services due to the length.

Related info for your journey

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

    If you book a flight to United Kingdom from Portland, you will be flying from Portland, which is the city’s only airport. Portland (PDX) is located 6.0 mi from the center of Portland.

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

    For as low as $524, Icelandair can have you in United Kingdom from Portland in 12h 15m. The distance from Portland to United Kingdom is about 4747 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

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

    The cheapest airlines for a one-way flight from Portland to United Kingdom are Icelandair ($339), British Airways ($411), and Lufthansa ($414).

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

    The most popular flight routes from Portland to United Kingdom are Portland - London Heathrow, Portland - London Gatwick and Portland - London City.

  • What are the most reliable airlines from Portland to United Kingdom?

    Consider American Airlines (82%), Alaska Airlines (82%) or Aer Lingus (82%) when booking your flight. These represent the most reliable airlines when flying from Portland to United Kingdom.

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

    The cheapest flight price from Portland to United Kingdom is $436. On average you can expect to pay $1,425. The most popular route, (Portland - London Heathrow), can usually be booked for $477.

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

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

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

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

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

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

    Currently, November is the cheapest month in which you can book a flight from Portland to United Kingdom (average of $519). Flying from Portland to United Kingdom in June is currently the most expensive (average of $808). 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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Alternative routes for Portland to United Kingdom

See prices for flight routes from nearby airports that may be better suited for you.
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Top 10 airlines flying from Portland to United Kingdom

Discover the top 10 airlines that operate flights from Portland to United Kingdom. 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 2,558,603 searches. Data last updated outubro 24, 2025.
AirlineCheapestAverageFlexibilityOn-time
KLMCheapest$451Average$1,027FlexibilityNo cancel feeOn-time75%
IcelandairCheapest$493Average$740FlexibilityNo cancel feeOn-time76%
DeltaCheapest$554Average$997FlexibilityNo cancel feeOn-timeN/A
Virgin AtlanticCheapest$567Average$890FlexibilityNo cancel feeOn-time72%
IberiaCheapest$578Average$785FlexibilityNo cancel feeOn-time77%
American AirlinesCheapest$583Average$835FlexibilityNo cancel feeOn-time71%
British AirwaysCheapest$594Average$833FlexibilityNo cancel feeOn-time70%
Alaska AirlinesCheapest$600Average$1,408FlexibilityNo cancel feeOn-time75%
United AirlinesCheapest$623Average$913FlexibilityNo cancel feeOn-time69%
FinnairCheapest$641Average$940FlexibilityNo cancel feeOn-time76%

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