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Heathrow

$298+ Cheap flights from Portland (PDX) to Heathrow (LHR)

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 4/30. Fares are subject to change and may not be available on all flights or dates of travel.
PDX — LHR
May 23 — May 301
Sat 5/23
Sat 5/30
1 adult, Economy
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Cheapflights Tip: The best prices from Portland to London Heathrow are usually found in January or October, booked 40 days in advance, depart on a Monday or Tuesday and return on a Saturday

Cheap flight deals from Portland to Heathrow

Cheapest flights from Portland to Heathrow
Explore the most affordable flight options available from Portland to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 23, 2026.

This Mytrip deal was found by Cheapflights users on 4/22. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/227:05 pm
PDX
-
LHR
3 stops30h 30m
Multiple Airlines
Fri 5/2910:20 am
LHR
-
PDX
2 stops33h 25m
Multiple Airlines
Deal found 4/22$802
This Mytrip deal was found by Cheapflights users on 4/22. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/227:05 pm
PDX
-
LHR
3 stops30h 30m
Multiple Airlines
Thu 5/285:00 pm
LHR
-
PDX
2 stops32h 55m
Multiple Airlines
Deal found 4/22$816
This Mytrip deal was found by Cheapflights users on 4/21. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/57:05 pm
PDX
-
LHR
3 stops30h 15m
Multiple Airlines
Fri 6/129:55 am
LHR
-
PDX
2 stops33h 50m
Multiple Airlines
Deal found 4/21$817
This Kiwi.com deal was found by Cheapflights users on 4/20. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/41:50 pm
PDX
-
LHR
1 stop14h 30m
Multiple Airlines
Sun 11/83:15 pm
LHR
-
PDX
2 stops50h 54m
Multiple Airlines
Deal found 4/20$830
This FlightHub deal was found by Cheapflights users on 4/20. 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.
Mon 9/287:00 am
PDX
-
LHR
2 stops25h 00m
Scandinavian Airlines
Mon 10/127:05 am
LHR
-
PDX
2 stops22h 22m
Scandinavian Airlines
Deal found 4/20$860

Find flight deals from Portland to Heathrow

Discover tips and strategies to find the most affordable flight options for your journey from Portland (PDX) to Heathrow (LHR). 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 April 23, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$802
(Mytrip)

One-way from

$298
(Kiwi.com)

Popular in

June

Cheapest in

January

Average price

$746

Good round-trip deal

$964 or less

Good one-way deal

$431 or less
Provider with most accurate pricing for Portland-London Heathrow flight deals.
Search Deals
Provider most trusted by Cheapflights users for Portland-London Heathrow flights.
Search Deals
From Portland to London Heathrow
Search Deals
One-way flight from Portland to London Heathrow
Search Deals
Highest demand for flights based on searches. 24% potential increase in price ($279 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($39 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in April 2026
Search Deals
Price to beat on a round-trip flight from Portland to London Heathrow.
Search Deals
Price to beat on a one-way flight from Portland to London Heathrow.
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Portland to Heathrow 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 23, 2026.
Use the filters below to find and compare flights from Portland to London Heathrow Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

PortlandLondon

PDX - LHR

PDXLHR

Portland

Sat 9/19

10:05 pm-8:10 pm

1 stop14h 05m

London Heathrow

Tue 10/6

8:55 pm-11:10 am

1 stop22h 15m

$879

PortlandLondon

PDX - LHR

PDXLHR

Portland

Sun 9/6

1:25 pm-1:45 pm

2 stops16h 20m

London Heathrow

Thu 9/17

6:30 am-11:10 am

1 stop12h 40m

$884

PortlandLondon

PDX - LHR

PDXLHR

Portland

Tue 9/15

2:30 pm-1:15 pm

1 stop14h 45m

London Heathrow

Wed 9/23

6:30 am-3:06 pm

2 stops16h 36m

$888

PortlandLondon

PDX - LHR

PDXLHR

Portland

Sun 9/6

1:38 pm-5:40 pm

2 stops20h 02m

London Heathrow

Thu 9/17

9:05 pm-6:41 pm

3 stops29h 36m

$889

PortlandLondon

PDX - LHR

PDXLHR

Portland

Tue 9/22

9:40 am-10:45 am

2 stops17h 05m

London Heathrow

Thu 10/1

11:45 am-11:53 pm

2 stops20h 08m

$898

PortlandLondon

PDX - LHR

PDXLHR

Portland

Thu 9/24

7:00 am-5:40 pm

2 stops26h 40m

London Heathrow

Fri 10/2

9:05 pm-6:41 pm

3 stops29h 36m

$920
Quickest round-trip

PortlandLondon

PDX - LHR

PDXLHR

Portland

Sun 9/13

3:50 pm-3:35 pm

1 stop15h 45m

London Heathrow

Sun 9/20

6:30 am-11:10 am

1 stop12h 40m

$929

PortlandLondon

PDX - LHR

PDXLHR

Portland

Thu 10/8

1:38 pm-2:00 pm

1 stop16h 22m

London Heathrow

Thu 10/15

6:30 am-3:05 pm

2 stops16h 35m

$938

PortlandLondon

PDX - LHR

PDXLHR

Portland

Fri 8/21

7:00 am-1:35 pm

2 stops22h 35m

London Heathrow

Thu 9/3

9:05 pm-6:41 pm

3 stops29h 36m

$1,010

PortlandLondon

PDX - LHR

PDXLHR

Portland

Sun 9/6

1:38 pm-4:00 pm

2 stops18h 22m

London Heathrow

Sat 9/26

6:40 am-6:41 pm

3 stops20h 01m

$1,010

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/21

Showing 1-10 of 21 resultsSorted by cheapest first
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3

Compare providers for flights from Portland to Heathrow

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Portland to Heathrow in April.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice Accuracy2 starsTrust Score*2 stars
OvagoPrice Accuracy2 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Portland-London Heathrow Airport flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Portland-London Heathrow Airport flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Portland-London Heathrow Airport flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Portland-London Heathrow Airport flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Portland-London Heathrow Airport flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Portland to Heathrow

Have a flexible travel schedule? Discover the best time to fly to Heathrow 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 London Heathrow Airport

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

Use this chart to determine the optimal time to book a round-trip flight from Portland to Heathrow. Price data was last updated on April 17, 2026.

Booking 40 days in advance of your planned departure date is, on average, the best time to get cheap flights from Portland to London Heathrow Airport. 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 Heathrow Airport?

Currently, January is the cheapest month in which you can book a flight from Portland to London Heathrow Airport (average of $687). Flying from Portland to London Heathrow Airport in June is currently the most expensive (average of $1,287). 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 LHR?

Find hourly flight availability from Portland to Heathrow. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated April 23, 2026.

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

How much does it cost to fly round-trip from Portland to London Heathrow Airport?

The best insider tips for Portland to London Heathrow Airport flights

AI-powered summary based on content written by travel experts. AI can make mistakes.
Cheapflights partnered with top experts to bring you the best recommendations for your Portland to London Heathrow Airport trip
Our travel experts
Brandon Schultz

Brandon Schultz

Expert on PDX

Brandon Schultz is an award-winning food and travel writer based in New York City. His work has appeared in Forbes, AAA, Thrillist, Travel + Leisure, and The Daily Meal, among many others, and he is the author of 6 books, including 3 cookbooks.

Read more
Ramsey Qubein

Ramsey Qubein

Expert on LHR

An avid traveler and aviation expert who has visited 173 countries, all 50 states and seven continents, Ramsey Qubein flies nearly 400,000 miles a year. As a North Carolina-based freelance journalist for publications including Conde Nast Traveler, Forbes, USA Today and Bloomberg among others, he explores the latest trends in aviation, hospitality, cruises and business.

Read more

Reviews of airlines servicing Heathrow

Get insights into the airlines that provide service to Heathrow. 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 Heathrow. Reviews last updated April 23, 2026.
Peruse reviews from past customers who have flown with United Airlines,American Airlines, andIcelandair from Portland to London Heathrow Airport 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.
United Airlines
7.4
Good
9,637 reviews

Crew

8.1

Overall

7.4

Entertainment

7.1

Food

6.6

Boarding

7.7

Comfort

7.3

Reviews

1 / 20
8.0
Excellent

Anonymous,Apr 2026

DFW - EWR

The flight was on time. Crew was friendly. Will fly again. The seats was comfortable.
United Airlines
7.4
Good
9,637 reviews
United Airlines
7.4
Good
9,637 reviews

Crew

8.1

Overall

7.4

Entertainment

7.1

Food

6.6

Boarding

7.7

Comfort

7.3

Reviews

1 / 20
8.0
Excellent

Anonymous,Apr 2026

DFW - EWR

The flight was on time. Crew was friendly. Will fly again. The seats was comfortable.
American Airlines
7.1
Good
11,659 reviews
United Airlines
7.4
Good
9,637 reviews

Crew

8.1

Overall

7.4

Entertainment

7.1

Food

6.6

Boarding

7.7

Comfort

7.3

Reviews

1 / 20
8.0
Excellent

Anonymous,Apr 2026

DFW - EWR

The flight was on time. Crew was friendly. Will fly again. The seats was comfortable.
Icelandair
7.0
Good
639 reviews
United Airlines
7.4
Good
9,637 reviews

Crew

8.1

Overall

7.4

Entertainment

7.1

Food

6.6

Boarding

7.7

Comfort

7.3

Reviews

1 / 20
8.0
Excellent

Anonymous,Apr 2026

DFW - EWR

The flight was on time. Crew was friendly. Will fly again. The seats was comfortable.
Iberia
7.0
Good
3,191 reviews
United Airlines
7.4
Good
9,637 reviews

Crew

8.1

Overall

7.4

Entertainment

7.1

Food

6.6

Boarding

7.7

Comfort

7.3

Reviews

1 / 20
8.0
Excellent

Anonymous,Apr 2026

DFW - EWR

The flight was on time. Crew was friendly. Will fly again. The seats was comfortable.
British Airways
6.7
Okay
7,906 reviews
United Airlines
7.4
Good
9,637 reviews

Crew

8.1

Overall

7.4

Entertainment

7.1

Food

6.6

Boarding

7.7

Comfort

7.3

Reviews

1 / 20
8.0
Excellent

Anonymous,Apr 2026

DFW - EWR

The flight was on time. Crew was friendly. Will fly again. The seats was comfortable.

Related info for your journey

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

    Most people fly from Portland (PDX) if they book a flight from Portland to London Heathrow. On average, Portland has 7 outbound flights to London Heathrow per day from 13 airlines. Portland is conveniently located just 6.0 mi from Portland’s city center.

  • How long is the flight from Portland to London Heathrow Airport?

    Virgin Atlantic, Delta, and Scandinavian Airlines can get you from Portland to London Heathrow Airport in just under 14h 05m. Your travel time can differ by up to 5h 57m. There are 4896 mi between Portland and London Heathrow Airport. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

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

    According to our current data, Icelandair ($492), Iberia ($538), and Delta ($552) offers the cheapest pricing from Portland to London Heathrow Airport. Icelandair is priced at 43% lower than the current average price of a flight leaving 3 months from now.

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

    One-way options have recently been found by users for as low as $192 on Icelandair. Other airlines that offer cheap prices include Delta from $378 and Virgin Atlantic from $378 one-way.

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

    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 Portland to London Heathrow Airport on time: American Airlines (88%), Alaska Airlines (88%), Aer Lingus (88%).

  • What are the cheapest flights from Portland to London Heathrow Airport?

    On average you can expect to pay $1,263 for a flight from Portland to London Heathrow Airport. The cheapest flight overall is $335 while the most popular route, (Portland - London Heathrow) is currently priced at $817.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Portland to Heathrow 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 Heathrow Airport?

    Currently, January is the cheapest month in which you can book a flight from Portland to London Heathrow Airport (average of $687). Flying from Portland to London Heathrow Airport in June is currently the most expensive (average of $1,287). 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

Traveling to a place near London Heathrow Airport?

Book flights to London Heathrow Airport if you plan to visit one of these locations
Ilford
Hounslow
Winchester
Croydon
Gatwick
Southend-on-Sea
Harrow
Eastleigh
Dartford
Dover
Orpington
Watford
Northampton
Borehamwood
Broadway
Chipping Norton
Hayes
Kingston upon Thames
Eastbourne
Slough

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Portland to Heathrow

See prices for flight routes from nearby airports that may be better suited for you.
Portland to Gatwick flights
Boise to Heathrow flights
Boise to Gatwick flights

Top 10 airlines flying from Portland to Heathrow

Discover the top 10 airlines that operate flights from Portland to Heathrow. 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 23, 2026.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest$492Average$629FlexibilityNo cancel feeOn-time76%
IberiaCheapest$538Average$1,026FlexibilityNo cancel feeOn-time77%
DeltaCheapest$552Average$915FlexibilityNo cancel feeOn-timeN/A
Virgin AtlanticCheapest$558Average$759FlexibilityNo cancel feeOn-time72%
KLMCheapest$561Average$659FlexibilityNo cancel feeOn-time75%
British AirwaysCheapest$576Average$870FlexibilityNo cancel feeOn-time70%
Alaska AirlinesCheapest$600Average$1,218FlexibilityNo cancel feeOn-time75%
United AirlinesCheapest$607Average$987FlexibilityNo cancel feeOn-time69%
Air CanadaCheapest$630Average$881FlexibilityNo cancel feeOn-time67%
FinnairCheapest$664Average$977FlexibilityNo cancel feeOn-time76%

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