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$261+ 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 9/22. Fares are subject to change and may not be available on all flights or dates of travel.
PDX — LHR
May 5 — May 121
Mon 5/5
Mon 5/12
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 April 30, 2025.

Most accurate provider

AranGrant
3 stars

Most trusted provider

AranGrant
3 stars

Round-trip from

$608
(British Airways)

One-way from

$261
(oojo)

Popular in

June

Cheapest in

November

Average price

$688

Good round-trip deal

$787 or less

Good one-way deal

$531 or less
Provider with most accurate pricing for Portland-London (LON) flight deals.
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Provider most trusted by Cheapflights users for Portland-London (LON) flights.
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From Portland to United Kingdom
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One-way flight from Portland to United Kingdom
Search Deals
Highest demand for flights based on searches. 22% potential increase in price ($244 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($40 potential savings vs. average RT price).
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Average for round-trip flights in April 2025
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Price to beat on a round-trip flight from Portland to United Kingdom.
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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 April 30, 2025.

This American Airlines deal was found by Cheapflights users on 4/29. 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.
Sun 11/25:55 amPDX - INV
2 stops21h 15mAmerican Airlines
Fri 11/1411:05 amINV - PDX
1 stop13h 30mAmerican Airlines
Deal found 4/29$538
This oojo deal was found by Cheapflights users on 4/28. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/25:55 amPDX - INV
2 stops21h 15mBritish Airways
Fri 11/1411:05 amINV - PDX
2 stops19h 47mBritish Airways
Deal found 4/28$589
This American Airlines deal was found by Cheapflights users on 4/28. 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.
Fri 8/227:25 pmPDX - INV
1 stop16h 45mMultiple Airlines
Sun 8/318:55 pmINV - PDX
1 stop28h 40mMultiple Airlines
Deal found 4/28$614
This oojo deal was found by Cheapflights users on 4/29. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/223:20 pmPDX - GLA
1 stop14h 05mIcelandair
Wed 10/2912:35 pmGLA - PDX
1 stop12h 25mIcelandair
Deal found 4/29$619
This oojo deal was found by Cheapflights users on 4/28. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/193:20 pmPDX - LGW
1 stop15h 20mIcelandair
Fri 9/263:40 pmLGW - PDX
1 stop34h 15mIcelandair
Deal found 4/28$630
This oojo deal was found by Cheapflights users on 4/28. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/193:20 pmPDX - LHR
1 stop12h 35mIcelandair
Fri 9/261:05 pmLHR - PDX
1 stop12h 50mIcelandair
Deal found 4/28$632
This Delta deal was found by Cheapflights users on 4/29. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/146:04 amPDX - MAN
1 stop18h 31mDelta
Tue 9/302:15 pmMAN - PDX
1 stop17h 14mDelta
Deal found 4/29$634
This Iberia deal was found by Cheapflights users on 4/29. 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 Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/127:25 pmPDX - LHR
Nonstop9h 35mIberia
Mon 10/277:05 pmLHR - PDX
2 stops22h 26mIberia
Deal found 4/29$654
This Gotogate deal was found by Cheapflights users on 4/28. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/136:15 amPDX - LHR
2 stops19h 20mMultiple Airlines
Wed 10/228:40 amLHR - PDX
2 stops18h 06mMultiple Airlines
Deal found 4/28$656
This Cheapflightsfares deal was found by Cheapflights users on 4/28. 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.
Mon 9/227:25 pmPDX - LHR
Nonstop9h 35mBritish Airways
Fri 10/33:40 pmLHR - PDX
Nonstop9h 55mBritish Airways
Deal found 4/28$675
This Delta deal was found by Cheapflights users on 4/28. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/107:00 amPDX - LGW
1 stop19h 00mDelta
Fri 8/2212:00 pmLGW - PDX
1 stop17h 35mDelta
Deal found 4/28$676
This Delta deal was found by Cheapflights users on 4/29. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/261:25 pmPDX - LHR
1 stop22h 35mDelta
Sun 8/246:15 amLHR - PDX
2 stops16h 22mDelta
Deal found 4/29$680

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 April 30, 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

PortlandGlasgow

PDX - GLA

PDXGLA

Portland

Wed 10/22

3:20 pm-1:25 pm

1 stop14h 05m

Glasgow Intl

Wed 10/29

12:35 pm-6:00 pm

1 stop12h 25m

$619

PortlandLondon

PDX - LGW

PDXLGW

Portland

Sun 5/11

3:20 pm-2:40 pm

1 stop15h 20m

London Gatwick

Thu 5/15

1:00 pm-5:55 pm

1 stop12h 55m

$669

PortlandLondon

PDX - LHR

PDXLHR

Portland

Wed 5/7

3:20 pm-8:20 pm

1 stop21h 00m

London Heathrow

Mon 5/12

9:25 pm-5:55 pm

1 stop28h 30m

$670

PortlandLondon

PDX - LHR

PDXLHR

Portland

Sat 7/26

1:25 pm-8:00 pm

1 stop22h 35m

London Heathrow

Sun 8/24

6:15 am-2:37 pm

2 stops16h 22m

$680

PortlandGlasgow

PDX - GLA

PDXGLA

Portland

Mon 10/6

7:25 pm-4:25 pm

1 stop13h 00m

Glasgow Intl

Mon 10/13

8:50 pm-5:35 pm

1 stop28h 45m

$683

PortlandGlasgow

PDX - GLA

PDXGLA

Portland

Wed 10/22

7:25 pm-5:50 pm

1 stop14h 25m

Glasgow Intl

Wed 10/29

10:55 am-11:04 pm

2 stops19h 09m

$687

PortlandLondon

PDX - LHR

PDXLHR

Portland

Sun 5/11

3:20 pm-11:55 am

1 stop12h 35m

London Heathrow

Thu 5/15

3:05 pm-9:28 am

2 stops50h 23m

$723

PortlandEdinburgh

PDX - EDI

PDXEDI

Portland

Tue 7/22

1:45 pm-9:05 am

2 stops35h 20m

Edinburgh Turnhouse

Wed 7/30

6:00 am-9:25 am

3 stops35h 25m

$726

PortlandLondon

PDX - LGW

PDXLGW

Portland

Fri 5/9

3:20 pm-11:45 am

1 stop12h 25m

London Gatwick

Tue 5/20

7:50 pm-12:24 pm

2 stops48h 34m

$740

PortlandGlasgow

PDX - GLA

PDXGLA

Portland

Fri 9/19

1:05 pm-9:40 am

1 stop12h 35m

Glasgow Intl

Sat 10/18

4:55 pm-11:00 am

1 stop26h 05m

$747

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/28

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 $661). Flying from Portland to United Kingdom in June is currently the most expensive (average of $1,110). 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 April 30, 2025.

When flying from Portland to United Kingdom, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Weekly flight availability from Portland to United Kingdom

Explore weekly flight availability from Portland to United Kingdom. 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 April 30, 2025.

The most flights from PDX to GB0 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 United Kingdom by month

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

In terms of precipitation, rainfall in United Kingdom ranges from 1.6 - 2.8 inches per month. January is typically the wettest month, when rainfall can reach 2.8 in. July is typically the driest time to visit United Kingdom when rainfall is around 1.6 in.

Temperature in United Kingdom by month

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

If weather is an important factor for your trip to United Kingdom, 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 62.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 39.2 F).

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 April 30, 2025.
Get a feel of what it's like to fly with Delta, KLM and Finnair from Portland to United Kingdom by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,929 reviews

Comfort

7.9

Crew

8.5

Entertainment

7.9

Overall

8.0

Boarding

8.2

Food

7.3

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Delta
8.0
Very good
7,929 reviews
Delta
8.0
Very good
7,929 reviews

Comfort

7.9

Crew

8.5

Entertainment

7.9

Overall

8.0

Boarding

8.2

Food

7.3

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
KLM
7.8
Good
1,334 reviews
Delta
8.0
Very good
7,929 reviews

Comfort

7.9

Crew

8.5

Entertainment

7.9

Overall

8.0

Boarding

8.2

Food

7.3

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Finnair
7.6
Good
1,275 reviews
Delta
8.0
Very good
7,929 reviews

Comfort

7.9

Crew

8.5

Entertainment

7.9

Overall

8.0

Boarding

8.2

Food

7.3

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
SWISS
7.5
Good
1,588 reviews
Delta
8.0
Very good
7,929 reviews

Comfort

7.9

Crew

8.5

Entertainment

7.9

Overall

8.0

Boarding

8.2

Food

7.3

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Air France
7.4
Good
1,446 reviews
Delta
8.0
Very good
7,929 reviews

Comfort

7.9

Crew

8.5

Entertainment

7.9

Overall

8.0

Boarding

8.2

Food

7.3

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

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.

  • 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 ($261), WestJet ($408), and Iberia ($408).

  • 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 (78%), Alaska Airlines (78%) or Aer Lingus (78%) 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 $1,512. The most popular route, (Portland - London Heathrow), can usually be booked for $593.

  • 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 $661). Flying from Portland to United Kingdom in June is currently the most expensive (average of $1,110). 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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Portland to Manchester flights
Eugene to Leonardo da Vinci/Fiumicino flights
Portland to Otopeni Intl flights
Eugene to Dublin flights
Boise to Leonardo da Vinci/Fiumicino flights
Eugene to Charles de Gaulle flights
Portland to Shannon flights
Portland to Split flights
Redmond to Heathrow flights
Portland to Prague flights
Portland to Málaga flights

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 April 30, 2025.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest$491Average$808FlexibilityNo cancel feeOn-time76%
Air CanadaCheapest$580Average$956FlexibilityNo cancel feeOn-time67%
IberiaCheapest$584Average$778FlexibilityNo cancel feeOn-time77%
KLMCheapest$608Average$993FlexibilityNo cancel feeOn-time75%
DeltaCheapest$612Average$950FlexibilityNo cancel feeOn-timeN/A
British AirwaysCheapest$616Average$863FlexibilityNo cancel feeOn-time70%
American AirlinesCheapest$620Average$823FlexibilityNo cancel feeOn-time71%
Virgin AtlanticCheapest$625Average$983FlexibilityNo cancel feeOn-time72%
FinnairCheapest$629Average$788FlexibilityNo cancel feeOn-time76%
United AirlinesCheapest$645Average$933FlexibilityNo cancel feeOn-time69%

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