Cheap flights from Portland to London Heathrow Airport from £220
This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 12/10. Fares are subject to change and may not be available on all flights or dates of travel.
PDX — LHR
12 Oct — 19 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.
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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 12 September 2026.
Thu 15/1019:30 -
Nonstop9h 30m
Mon 2/1113:35 -
Nonstop10h 15m
Deal found 11/9£630
Thu 15/1013:12 -
1 stop15h 03m
Mon 2/1113:35 -
Nonstop10h 15m
Deal found 11/9£633
Thu 15/1010:10 -
2 stops15h 50m
Mon 2/1113:00 -
2 stops33h 41m
Deal found 11/9£635
Fri 18/909:51 -
1 stop17h 29m
Mon 28/909:55 -
2 stops18h 21m
Deal found 12/9£635
Fri 4/1217:45 -
Nonstop9h 35m
Mon 21/1213:35 -
Nonstop10h 15m
Deal found 12/9£636
Tue 6/1012:45 -
3 stops33h 45m
Mon 12/1006:00 -
2 stops21h 11m
Deal found 11/9£637
Sat 17/1010:10 -
1 stop19h 10m
Sat 24/1011:25 -
1 stop14h 21m
Deal found 11/9£638
Thu 10/1207:00 -
1 stop14h 55m
Mon 21/1207:50 -
1 stop15h 36m
Deal found 12/9£641
Mon 28/914:27 -
2 stops18h 13m
Mon 12/1015:05 -
1 stop26h 26m
Deal found 11/9£641
Tue 29/910:10 -
2 stops17h 40m
Fri 9/1006:30 -
2 stops20h 41m
Deal found 11/9£643
Tue 6/1019:30 -
Nonstop9h 30m
Mon 12/1016:25 -
1 stop35h 04m
Deal found 11/9£644
Fri 2/1010:10 -
2 stops15h 50m
Tue 6/1015:05 -
2 stops29h 00m
Deal found 11/9£645
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 12 September 2026.
Fri 2/1013:20 -
1 stop12h 40m
Sat 19/1208:55 -
2 stops20h 05m
Deal found 9/9£728
Mon 1/213:00 -
3 stops24h 35m
Wed 10/207:05 -
3 stops21h 51m
Deal found 9/9£783
Tue 22/915:00 -
1 stop16h 05m
Sun 11/1017:00 -
1 stop14h 02m
Deal found 8/9£822
Tue 2/306:00 -
1 stop16h 55m
Fri 5/313:35 -
Nonstop10h 15m
Deal found 11/9£840
Mon 26/1015:40 -
2 stops19h 10m
Tue 3/1120:05 -
2 stops32h 57m
Deal found 7/9£925
Wed 4/1107:15 -
3 stops27h 15m
Mon 16/1106:40 -
2 stops23h 20m
Deal found 7/9£803
Fri 2/1021:32 -
1 stop33h 33m
Sat 19/1214:45 -
1 stop16h 13m
Deal found 7/9£863
Thu 21/113:00 -
3 stops24h 20m
Mon 25/107:05 -
3 stops23h 21m
Deal found 7/9£872
Wed 28/1013:06 -
2 stops22h 24m
Thu 5/1107:05 -
3 stops23h 14m
Deal found 10/9£923
Tue 27/1013:06 -
3 stops25h 29m
Tue 10/1106:40 -
2 stops22h 16m
Deal found 8/9£928
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 12 September 2026.
Thu 15/1019:30 -
Nonstop9h 30m
Mon 2/1113:35 -
Nonstop10h 15m
Deal found 11/9£630
Fri 4/1217:45 -
Nonstop9h 35m
Mon 21/1213:35 -
Nonstop10h 15m
Deal found 12/9£636
Mon 12/1019:30 -
Nonstop9h 30m
Mon 19/1015:40 -
Nonstop10h 00m
Deal found 12/9£641
Fri 4/1217:45 -
Nonstop9h 35m
Wed 16/1213:35 -
Nonstop10h 15m
Deal found 12/9£647
Fri 2/1019:30 -
Nonstop9h 30m
Wed 7/1015:40 -
Nonstop10h 00m
Deal found 11/9£648
Mon 19/1019:30 -
Nonstop9h 30m
Mon 26/1013:35 -
Nonstop10h 15m
Deal found 11/9£672
Mon 8/217:45 -
Nonstop9h 35m
Wed 17/213:35 -
Nonstop10h 15m
Deal found 7/9£674
Fri 6/1117:45 -
Nonstop9h 35m
Mon 30/1113:35 -
Nonstop10h 15m
Deal found 11/9£681
Mon 7/1217:45 -
Nonstop9h 35m
Fri 18/1213:35 -
Nonstop10h 15m
Deal found 7/9£685
Sun 17/117:45 -
Nonstop9h 35m
Sun 7/213:35 -
Nonstop10h 15m
Deal found 7/9£689
Mon 1/217:45 -
Nonstop9h 35m
Mon 15/213:35 -
Nonstop10h 15m
Deal found 8/9£695
Thu 1/1019:30 -
Nonstop9h 30m
Wed 7/1015:40 -
Nonstop10h 00m
Deal found 11/9£696
Last-minute flights from Portland to Heathrow
Discover last-minute flight deals from Portland to Heathrow. Data last updated 12 September 2026 and is based on user searches.
Thu 17/910:10 -
2 stops15h 50m
Tue 22/915:05 -
2 stops28h 55m
Deal found 10/9£774
Fri 18/909:51 -
1 stop17h 29m
Mon 28/909:55 -
2 stops18h 21m
Deal found 12/9£635
Fri 18/909:00 -
2 stops17h 10m
Mon 21/907:30 -
2 stops25h 07m
Deal found 11/9£653
Fri 18/913:00 -
1 stop14h 35m
Sun 27/909:30 -
2 stops17h 41m
Deal found 12/9£710
Fri 18/915:00 -
1 stop16h 05m
Mon 28/917:00 -
1 stop14h 55m
Deal found 8/9£724
Fri 18/909:20 -
1 stop21h 45m
Sun 27/917:00 -
1 stop34h 50m
Deal found 8/9£728
Fri 18/919:45 -
2 stops32h 05m
Sun 27/915:05 -
1 stop26h 26m
Deal found 11/9£760
Fri 18/922:00 -
1 stop14h 10m
Sun 27/911:30 -
2 stops18h 29m
Deal found 9/9£764
Mon 21/913:59 -
1 stop17h 06m
Mon 28/917:00 -
1 stop13h 01m
Deal found 7/9£687
Mon 21/906:30 -
2 stops16h 50m
Wed 7/1008:50 -
2 stops19h 04m
Deal found 8/9£701
Mon 21/910:51 -
2 stops16h 19m
Wed 7/1012:00 -
2 stops17h 56m
Deal found 9/9£732
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 12 September 2026.
Mon 12/1015:30 -
1 stop12h 25m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 9/9£220
Mon 1/214:45 -
1 stop20h 45m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 10/9£222
Mon 16/1114:45 -
1 stop12h 05m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 7/9£224
Tue 8/1214:45 -
1 stop20h 45m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 9/9£226
Tue 10/1114:45 -
1 stop20h 45m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 11/9£227
Mon 8/314:45 -
1 stop12h 05m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 8/9£228
Mon 19/1015:30 -
3 stops33h 35m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 10/9£229
Sun 1/1107:00 -
2 stops21h 50m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 8/9£229
Mon 26/1015:45 -
2 stops19h 45m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 9/9£232
Mon 5/1015:30 -
3 stops34h 50m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 8/9£233
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 12 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 12 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
Sun 10/1
12:00-12:20
1 stop16h 20m
London Heathrow
Wed 31/12
00:00-15:00
Nonstop0h 00m
£243
Fastest return journey
PortlandLondon
PDX Portland - LHR London Heathrow
PDXLHR
Portland
Sun 10/1
17:45-11:20
Nonstop9h 35m
London Heathrow
Wed 31/12
00:00-15:00
Nonstop0h 00m
£248
PortlandLondon
PDX Portland - LHR London Heathrow
PDXLHR
Portland
Sun 7/3
10:00-11:50
1 stop17h 50m
London Heathrow
Wed 31/12
00:00-15:00
Nonstop0h 00m
£248
PortlandLondon
PDX Portland - LHR London Heathrow
PDXLHR
Portland
Wed 10/3
10:00-11:50
1 stop17h 50m
London Heathrow
Wed 31/12
00:00-15:00
Nonstop0h 00m
£248
PortlandLondon
PDX Portland - LHR London Heathrow
PDXLHR
Portland
Wed 3/3
17:45-11:20
Nonstop9h 35m
London Heathrow
Wed 31/12
00:00-15:00
Nonstop0h 00m
£248
PortlandLondon
PDX Portland - LHR London Heathrow
PDXLHR
Portland
Wed 10/3
17:45-11:20
Nonstop9h 35m
London Heathrow
Wed 31/12
00:00-15:00
Nonstop0h 00m
£248
PortlandLondon
PDX Portland - LHR London Heathrow
PDXLHR
Portland
Tue 8/12
13:04-21:20
3 stops24h 16m
London Heathrow
Wed 31/12
00:00-15:00
Nonstop0h 00m
£251
PortlandLondon
PDX Portland - LHR London Heathrow
PDXLHR
Portland
Sun 10/1
13:39-21:20
3 stops23h 41m
London Heathrow
Wed 31/12
00:00-15:00
Nonstop0h 00m
£251
PortlandLondon
PDX Portland - LHR London Heathrow
PDXLHR
Portland
Tue 9/3
16:05-21:20
3 stops21h 15m
London Heathrow
Wed 31/12
00:00-15:00
Nonstop0h 00m
£255
PortlandLondon
PDX Portland - LHR London Heathrow
PDXLHR
Portland
Mon 8/3
16:05-21:20
3 stops21h 15m
London Heathrow
Wed 31/12
00:00-15:00
Nonstop0h 00m
£255
Flights are sorted by cheapest return flights first.
Deals found on 7/9
Showing 1-10 of 22 resultsSorted by cheapest first
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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 £519). Flying from Portland to London Heathrow Airport in June is currently the most expensive (average of £998). 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 12 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 £645 and £842 in October.The cheapest return price found within the last 5 days was £630 on Iberia (15 Oct–2 Nov).
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 12 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 12 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 £728, 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 (£455), 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 (88%), Alaska Airlines (88%), Aer Lingus (88%).
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 £519). Flying from Portland to London Heathrow Airport in June is currently the most expensive (average of £998). 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 12 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 12 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!
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