Cheap flights from Portland to London from £222
This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Portland to London departing on 31/10. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Fly from
Fly to
Route
Depart
Return
PortlandLondon
PDX Portland - LGW London Gatwick
PDXLGW
Portland
Mon 9/11
14:45-15:30
1 stop16h 45m
London Gatwick
Mon 16/11
07:40-17:00
1 stop17h 20m
PortlandLondon
PDX Portland - LHR London Heathrow
PDXLHR
Portland
Thu 3/12
14:45-21:40
2 stops22h 55m
London Heathrow
Sun 13/12
06:40-17:00
2 stops18h 20m
PortlandLondon
PDX Portland - LGW London Gatwick
PDXLGW
Portland
Thu 3/12
14:45-08:35
3 stops33h 50m
London Gatwick
Sun 13/12
07:00-17:00
2 stops18h 00m
PortlandLondon
PDX Portland - LHR London Heathrow
PDXLHR
Portland
Mon 19/10
15:30-21:35
2 stops22h 05m
London Heathrow
Wed 28/10
07:05-18:00
2 stops17h 55m
PortlandLondon
PDX Portland - LGW London Gatwick
PDXLGW
Portland
Mon 2/11
14:45-15:30
1 stop16h 45m
London Gatwick
Mon 9/11
07:40-17:00
1 stop17h 20m
PortlandLondon
PDX Portland - LHR London Heathrow
PDXLHR
Portland
Mon 2/11
14:45-09:35
3 stops34h 50m
London Heathrow
Mon 9/11
06:40-17:00
2 stops18h 20m
PortlandLondon
PDX Portland - LGW London Gatwick
PDXLGW
Portland
Mon 8/2
14:45-15:30
1 stop16h 45m
London Gatwick
Tue 16/2
08:00-17:00
1 stop17h 00m
PortlandLondon
PDX Portland - LGW London Gatwick
PDXLGW
Portland
Tue 1/12
14:45-10:10
3 stops35h 25m
London Gatwick
Sun 13/12
18:35-17:00
3 stops30h 25m
PortlandLondon
PDX Portland - LHR London Heathrow
PDXLHR
Portland
Wed 10/2
17:45-11:20
Nonstop9h 35m
London Heathrow
Wed 24/2
13:35-15:50
Nonstop10h 15m
PortlandLondon
PDX Portland - LHR London Heathrow
PDXLHR
Portland
Mon 1/3
17:45-11:20
Nonstop9h 35m
London Heathrow
Wed 10/3
13:35-15:50
Nonstop10h 15m
See travel insights to London from
How to get the cheapest flight ticket from Portland to London
Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip
What is the typical price of a round-trip flight between Portland and London?
Prices are currently low for flights on this route.
Typical prices usually range from £618 to £837.The lowest price recently found on this route was £564.
What is the cheapest month to fly to London?
The cheapest month to fly to London from Portland is in February. Flight prices, which tend to average around £553, are often lower during this time because this is during the off-season. The month of January is another great option to travel to London, with average flight prices from Portland averaging around £565.
What is the cheapest day to depart on your flight to London?
Our data shows that Tuesday is the least expensive day to fly to London. Tickets to fly out on this day can be as low as £784. When flying out on a Wednesday, the most expensive travel day of the week, you can expect to see flight prices from Portland to London for around £875.
What is the cheapest time of day to depart on your flight to London?
The cheapest time of day to fly to London is in the evening when flights can be purchased for as low as £841. Flights in the afternoon are often more expensive, with an average ticket price of £907.
What is the cheapest Portland to London flight route?
Fly from Portland to London Heathrow for the best Portland - London flight prices
How far in advance should I book a flight from Portland to London?
You are more likely to see cheaper flights to London from Portland when booking weeks ahead of your departure date. In general, you can expect to find flights to London for around £742 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to London from Portland for as low as £670 on momondo.
What cabin class options are available on Portland to London flights?
There are 2 cabin classes available to choose from on Portland to London flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.
Can stopping save me money on Portland to London flights?
You could potentially save up to 28% on your flight if you consider stops on a Portland to London flight.
How have Portland to London flight prices changed over time?
As of October 2026, prices for Portland to London flights are approximately 48% more expensive when compared to flights at the same time last year.
How many flights depart from Portland to London on average per day?
As of October 2026, 7 flights take off from Portland and land in London each day. The most common flight departure time for this route is 19:00, with 100% of daily flights taking off in the evening.
How many flights depart from Portland to London on average per week?
As of October 2026, 49 flights take off from Portland and land in London each week. The most common flight departure day for this route is Mon, with 14% of weekly flights taking off on this day.
When to book flights from Portland to London
Cheap Portland to London (PDX to LON) flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from Portland to London
Frequently asked questions about flying from Portland to London
How far is Portland to London by plane?
The straight-line distance from Portland to London is 4909.8 mi. A reasonable flight in good conditions will take 9h 30m.
When did momondo last update prices for flights from Portland Airport to London?
Prices for flights from Portland Airport to London refresh daily.
How many operators does momondo search for flights from Portland Airport to London?
As of October 2026, there is 1 operator available to choose from for flights from Portland Airport to London.
How old do you have to be to fly from Portland Airport to London?
The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Portland Airport to London.
What documentation or ID do you need to fly to London?
The necessary travel and health documents for your London trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.
What is the most popular plane model from Portland to London?
Based on momondo bookings for this flight route, the most popular plane model on flight routes from Portland to London is Boeing 787-10 Dreamliner (54.27% of total bookings). The next most popular plane models are Boeing 787-8 Dreamliner (36.21%), Boeing 787-9 Dreamliner (4.31%), and Boeing 787 Dreamliner (3.32%).
What is the most popular airline from Portland to London?
Based on momondo bookings for this flight route, the most popular airline on flight routes from Portland to London is British Airways (100% of total bookings).
Best airlines flying from Portland to London
Compare and see reviews for airlines that fly from Portland to London with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom £466 | Free Cancellation | Rating 6.7 8,256 reviews |
British Airways Flights From Portland to London
British Airways is one of the most popular airlines flying from Portland to London, operating 7 flights/week on average for this route. A good British Airways flight deal for Portland to London starts from £466 round-trip, up to an average price of £841. Our users have rated British Airways at 6.7/10.
Travelling to a place near London?
Book flights to London if you plan to visit one of these locationsWhy use momondo?
Why should I use momondo to find a flight deal from Portland to London?
To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to London from Portland.
Can I find flights from Portland to London with flexible booking policies on momondo?
Flights from Portland to London with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.
How can momondo help me find flights from Portland to London?
momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Portland to London.
I’m not ready to book a flight from Portland to London right now. Can momondo alert me if prices change?
Yes momondo offers price alerts on flights to London from Portland. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.