Cheap flights from Portland to London Heathrow Airport from £226
This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 5/11. Fares are subject to change and may not be available on all flights or dates of travel.
PDX — LHR
24 Oct — 31 Oct1
Return
1 adult
Economy
Return
1 adult, Economy, 0 bags
Cheapflights Tip: The best prices from Portland to London Heathrow are usually found in February or January, booked 83 days in advance, depart on a Monday or Thursday and return on a Friday
Cheap flight deals from Portland to Heathrow
Enter your travel dates to find the best prices.
Cheapest
Best
Direct
Last-minute
One-way
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 24 September 2026.
Thu 22/1010:10 -
1 stop19h 10m
Thu 29/1014:30 -
1 stop35h 01m
Deal found 22/9£572
Tue 6/1005:30 -
1 stop24h 40m
Fri 16/1015:05 -
1 stop26h 26m
Deal found 22/9£573
Sat 17/1015:30 -
2 stops34h 30m
Tue 27/1014:30 -
1 stop35h 01m
Deal found 22/9£574
Tue 10/1109:00 -
2 stops19h 00m
Thu 19/1107:40 -
1 stop15h 43m
Deal found 23/9£575
Mon 5/1015:30 -
2 stops34h 30m
Tue 13/1006:30 -
2 stops20h 41m
Deal found 21/9£576
Sun 18/1010:10 -
1 stop19h 10m
Wed 28/1011:10 -
2 stops18h 47m
Deal found 22/9£577
Wed 21/1015:30 -
3 stops33h 50m
Wed 28/1007:05 -
2 stops17h 55m
Deal found 21/9£579
Tue 6/1007:00 -
2 stops19h 00m
Thu 15/1014:05 -
2 stops18h 29m
Deal found 22/9£580
Fri 23/1015:30 -
1 stop13h 50m
Wed 4/1114:30 -
1 stop14h 16m
Deal found 21/9£581
Thu 5/1114:45 -
2 stops23h 35m
Wed 11/1106:30 -
2 stops18h 30m
Deal found 23/9£583
Mon 30/1117:45 -
Nonstop9h 35m
Mon 7/1213:35 -
Nonstop10h 15m
Deal found 23/9£584
Wed 28/1013:10 -
2 stops17h 35m
Wed 4/1106:20 -
2 stops17h 50m
Deal found 24/9£584
Best flights from Portland to Heathrow
Discover carefully curated flight deals from Portland to Heathrow that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 24 September 2026.
Sun 4/1015:21 -
1 stop16h 14m
Fri 16/1017:45 -
1 stop14h 14m
Deal found 22/9£575
Tue 2/315:40 -
1 stop12h 40m
Fri 5/314:45 -
1 stop14h 28m
Deal found 23/9£579
Mon 8/216:05 -
2 stops29h 50m
Sat 20/207:40 -
2 stops20h 53m
Deal found 22/9£644
Fri 4/1217:45 -
Nonstop9h 35m
Sun 13/1211:55 -
1 stop18h 03m
Deal found 22/9£647
Thu 3/1210:10 -
2 stops16h 40m
Fri 18/1212:15 -
1 stop12h 45m
Deal found 19/9£682
Sun 8/1108:08 -
1 stop20h 12m
Sat 14/1114:45 -
1 stop16h 15m
Deal found 20/9£613
Thu 22/1011:25 -
2 stops15h 20m
Thu 29/1006:20 -
2 stops20h 42m
Deal found 23/9£630
Mon 28/1219:12 -
1 stop30h 28m
Fri 8/111:35 -
2 stops38h 45m
Deal found 19/9£663
Sun 10/117:45 -
Nonstop9h 35m
Wed 20/113:50 -
1 stop16h 25m
Deal found 19/9£785
Wed 16/1207:10 -
1 stop15h 10m
Thu 14/106:30 -
2 stops20h 33m
Deal found 23/9£760
Mon 25/107:15 -
1 stop15h 35m
Sun 31/113:35 -
Nonstop10h 15m
Deal found 21/9£818
Direct flights from Portland to Heathrow
Explore direct flight options from Portland to Heathrow based on user searches, and compare prices and availability for your desired travel dates. Data last updated 24 September 2026.
Sun 7/217:45 -
Nonstop9h 35m
Fri 19/213:35 -
Nonstop10h 15m
Deal found 23/9£574
Mon 30/1117:45 -
Nonstop9h 35m
Mon 7/1213:35 -
Nonstop10h 15m
Deal found 23/9£584
Wed 30/1217:45 -
Nonstop9h 35m
Fri 8/113:35 -
Nonstop10h 15m
Deal found 22/9£587
Wed 25/1117:45 -
Nonstop9h 35m
Wed 2/1213:35 -
Nonstop10h 15m
Deal found 19/9£591
Mon 9/1117:45 -
Nonstop9h 35m
Mon 23/1113:35 -
Nonstop10h 15m
Deal found 19/9£592
Mon 16/1117:45 -
Nonstop9h 35m
Mon 23/1113:35 -
Nonstop10h 15m
Deal found 22/9£593
Fri 6/1117:45 -
Nonstop9h 35m
Fri 13/1113:35 -
Nonstop10h 15m
Deal found 22/9£593
Sun 17/117:45 -
Nonstop9h 35m
Sun 24/113:35 -
Nonstop10h 15m
Deal found 19/9£596
Mon 16/1117:45 -
Nonstop9h 35m
Mon 23/1113:35 -
Nonstop10h 15m
Deal found 22/9£602
Wed 11/1117:45 -
Nonstop9h 35m
Wed 18/1113:35 -
Nonstop10h 15m
Deal found 19/9£602
Wed 7/1019:30 -
Nonstop9h 30m
Wed 14/1015:40 -
Nonstop10h 00m
Deal found 22/9£603
Last-minute flights from Portland to Heathrow
Discover last-minute flight deals from Portland to Heathrow. Data last updated 24 September 2026 and is based on user searches.
Sun 4/1015:21 -
1 stop16h 14m
Fri 16/1017:45 -
1 stop14h 14m
Deal found 22/9£575
Mon 5/1015:30 -
2 stops34h 30m
Tue 13/1006:30 -
2 stops20h 41m
Deal found 21/9£576
Tue 6/1005:30 -
1 stop24h 40m
Fri 16/1015:05 -
1 stop26h 26m
Deal found 22/9£573
Tue 6/1007:00 -
2 stops19h 00m
Thu 15/1014:05 -
2 stops18h 29m
Deal found 22/9£580
Sat 17/1015:30 -
2 stops34h 30m
Tue 27/1014:30 -
1 stop35h 01m
Deal found 22/9£574
Sun 18/1010:10 -
1 stop19h 10m
Wed 28/1011:10 -
2 stops18h 47m
Deal found 22/9£577
Sun 18/1015:30 -
1 stop13h 50m
Sat 31/1014:30 -
1 stop13h 16m
Deal found 23/9£585
Mon 19/1019:30 -
Nonstop9h 30m
Tue 27/1008:20 -
1 stop18h 09m
Deal found 22/9£587
Wed 21/1015:30 -
3 stops33h 50m
Wed 28/1007:05 -
2 stops17h 55m
Deal found 21/9£579
Thu 22/1010:10 -
1 stop19h 10m
Thu 29/1014:30 -
1 stop35h 01m
Deal found 22/9£572
Fri 23/1015:30 -
1 stop13h 50m
Wed 4/1114:30 -
1 stop14h 16m
Deal found 21/9£581
Wed 28/1013:10 -
2 stops17h 35m
Wed 4/1106:20 -
2 stops17h 50m
Deal found 24/9£584
One-way flights from Portland to Heathrow
Search for one-way flight options from Portland to Heathrow. Find affordable one-way fares based on user searches. Data last updated 24 September 2026.
Thu 5/1114:45 -
2 stops22h 55m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 20/9£226
Mon 5/1015:30 -
2 stops16h 30m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 23/9£231
Mon 12/1015:30 -
1 stop12h 25m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 20/9£232
Mon 19/1015:30 -
3 stops38h 00m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 19/9£234
Sat 28/1114:45 -
1 stop20h 45m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 23/9£236
Wed 14/1015:30 -
1 stop20h 50m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 21/9£236
Thu 10/1214:45 -
1 stop20h 45m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 19/9£237
Mon 26/1015:45 -
3 stops21h 05m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 24/9£239
Wed 21/1015:30 -
2 stops17h 35m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 21/9£239
Thu 22/1015:30 -
1 stop12h 25m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 21/9£241
Mon 22/319:05 -
1 stop32h 45m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 21/9£242
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 24 September 2026.
Customise 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 7,457,451 searches. Data last updated 24 September 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 return flight
PortlandLondon
PDX Portland - LHR London Heathrow
PDXLHR
Portland
Thu 31/12
14:45-19:30
1 stop20h 45m
London Heathrow
Wed 31/12
00:00-15:00
Nonstop0h 00m
£249
Fastest return journey
PortlandLondon
PDX Portland - LHR London Heathrow
PDXLHR
Portland
Mon 15/3
18:45-11:20
Nonstop9h 35m
London Heathrow
Wed 31/12
00:00-15:00
Nonstop0h 00m
£252
PortlandLondon
PDX Portland - LHR London Heathrow
PDXLHR
Portland
Sat 20/3
19:10-11:50
1 stop33h 40m
London Heathrow
Wed 31/12
00:00-15:00
Nonstop0h 00m
£252
PortlandLondon
PDX Portland - LHR London Heathrow
PDXLHR
Portland
Sun 21/3
15:15-09:20
2 stops35h 05m
London Heathrow
Wed 31/12
00:00-15:00
Nonstop0h 00m
£252
PortlandLondon
PDX Portland - LHR London Heathrow
PDXLHR
Portland
Wed 30/12
17:45-11:20
Nonstop9h 35m
London Heathrow
Wed 31/12
00:00-15:00
Nonstop0h 00m
£252
PortlandLondon
PDX Portland - LHR London Heathrow
PDXLHR
Portland
Wed 30/12
12:26-10:40
1 stop14h 14m
London Heathrow
Wed 31/12
00:00-15:00
Nonstop0h 00m
£255
PortlandLondon
PDX Portland - LHR London Heathrow
PDXLHR
Portland
Tue 29/12
19:12-20:35
2 stops17h 23m
London Heathrow
Wed 31/12
00:00-15:00
Nonstop0h 00m
£255
PortlandLondon
PDX Portland - LHR London Heathrow
PDXLHR
Portland
Tue 23/3
08:46-07:10
3 stops39h 24m
London Heathrow
Wed 31/12
00:00-15:00
Nonstop0h 00m
£258
PortlandLondon
PDX Portland - LHR London Heathrow
PDXLHR
Portland
Fri 1/1
23:59-05:55
1 stop21h 56m
London Heathrow
Wed 31/12
00:00-15:00
Nonstop0h 00m
£293
PortlandLondon
PDX Portland - LHR London Heathrow
PDXLHR
Portland
Wed 13/1
16:05-07:10
3 stops31h 05m
London Heathrow
Wed 31/12
00:00-15:00
Nonstop0h 00m
£296
Flights are sorted by cheapest return flights first.
Deals found on 19/9
Showing 1-10 of 23 resultsSorted by cheapest first
1
2
3
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.
PDX-LHR
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 Heathrow Airport
Prices
Airlines
How far ahead should I book a flight from Portland to London Heathrow Airport?
The best time to book flights from Portland to London Heathrow Airport is 82 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.
What is the cheapest month to book a flight from Portland to London Heathrow Airport?
Currently, February is the cheapest month in which you can book a flight from Portland to London Heathrow Airport (average of £529). Flying from Portland to London Heathrow Airport in June is currently the most expensive (average of £1,023). 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 24 September 2026.
Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Portland to London Heathrow Airport as you normally would.
How much does it cost for a return flight from Portland to London Heathrow Airport?
Airfare is below average for this route at the moment.
Portland to London Heathrow Airport flights typically cost between £607 and £883 in October.The cheapest return price found within the last 5 days was £572 on Air Canada (22 Oct–29 Oct).
Weekly flight availability from Portland to London Heathrow Airport
Explore weekly flight availability from Portland to Heathrow. 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 24 September 2026.
The most flights from PDX to LHR 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).
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 24 September 2026.
Get a feel of what it's like to fly with British Airways from Portland to London Heathrow Airport by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Airline was good the flight attendant were very helpful and kind. The problem I had is with cheap tickets, my ticket was not allowed one check in baggage this was new to me. I do a lot of traveling overseas and 1 check in baggage is always allowed. Also I bought insurance for my ticket it proved to be useless. I have called several times and spoke to your customer service, not one single person mentioned it to me that baggage was not allowed. All this additional expense was too much for me. I even asked one of your customer service representative I need to buy extra baggage should I buy it now and he told me when you receive check in information you can buy it @ that time never mentioned it to me that my ticket didn’t include baggage. It was very frustrating. I will never use cheap ticket again.
Airline was good the flight attendant were very helpful and kind. The problem I had is with cheap tickets, my ticket was not allowed one check in baggage this was new to me. I do a lot of traveling overseas and 1 check in baggage is always allowed. Also I bought insurance for my ticket it proved to be useless. I have called several times and spoke to your customer service, not one single person mentioned it to me that baggage was not allowed. All this additional expense was too much for me. I even asked one of your customer service representative I need to buy extra baggage should I buy it now and he told me when you receive check in information you can buy it @ that time never mentioned it to me that my ticket didn’t include baggage. It was very frustrating. I will never use cheap ticket again.
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?
Portland (PDX), located 6.0 mi from the city center, is the airport you fly out of when you book flights from Portland to London Heathrow. 1 airline have flights from Portland to London Heathrow on a regular basis. Booking flights from Portland to London Heathrow should not be difficult; the airport handles an average of 7 outbound flights to London Heathrow per day.
How long is the flight from Portland to London Heathrow Airport?
For as low as £579, Delta can have you in London Heathrow Airport from Portland in 12h 40m. The distance between Portland and London Heathrow Airport is about 4896 mi. This flight may include one or multiple stops.
What is the cheapest airline to fly from Portland to London Heathrow Airport round-trip?
According to our current data, British Airways (£463), offers the cheapest pricing from Portland to London Heathrow Airport. This flight start at 36% lower than the current average price 3 months from now.
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 (85%), Alaska Airlines (85%), Aer Lingus (85%).
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 holiday 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, February is the cheapest month in which you can book a flight from Portland to London Heathrow Airport (average of £529). Flying from Portland to London Heathrow Airport in June is currently the most expensive (average of £1,023). 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.
Explore flights to Heathrow departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on 24 September 2026.
Discover the top airline 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 7,457,451 searches. Data last updated 24 September 2026.
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 Heathrow?
Cheapflights goes through 900+ travel sites to look for the best flight deals for flights from Portland to Heathrow. Too many options? Cheapflights also provides filters for things like airlines, price ranges, and number of stops to help you make a decision easily.
Why should you use Cheapflights to find cheap flight tickets from Portland to Heathrow?
By finding flights from multiple airlines and providers at completely no cost, Cheapflights helps millions of users like you annually find the best flights to Heathrow from Portland.
Can Cheapflights find flights from Portland to Heathrow with no change fees?
Users can book flights with no change fees policies with our dedicated filters. Book flights from Portland to Heathrow flexibly with Cheapflights today.
Can Cheapflights notify me if prices for flights from Portland to Heathrow become cheaper?
Yes, and it’s super simple to set up. Click the bell icon next to the flight deals above and provide a valid email address to enable Price Alerts. That’s it!
100% Free
Cheapflights is completely free to use, so you can start saving the moment you arrive.
Book with Flexibility
Our users can plan ahead with confidence and find flights with no change fees
Travel Smart
Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.
We value your privacy
Cheapflights and its partners wish to use cookies or similar technologies to store and/or access information on and about your device and process personal data such as your IP address, device identifiers etc., in order to improve your experience on the site, to analyse navigation, to offer and measure personalised advertising, and to facilitate sharing on social networks. We also allow the use of third-party cookies (including those from our advertising partners) on our sites.
By clicking 'Accept', you consent to your data being processed by 0 vendors on this web site for the purposes described in this notice. You can review the vendors and their individual processing purposes on the .
To review individual processing purposes and cookie categories, please click ’Select individual purposes’. You can review your choices and withdraw your consent at any time by clicking the ’Privacy Preferences’ link in the page side navigation.