Cheap flights from Portland to London from $245
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 7/19. 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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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 cheapest month to fly to London?
The cheapest month to fly to London from Portland is in November. Flight prices, which tend to average around $686, are often lower during this time because this is during the off-season. The month of April is another great option to travel to London, with average flight prices from Portland averaging around $688.
What is the cheapest day to depart on your flight to London?
The cheapest day to depart from Portland to London is on a Tuesday. Travelers who choose to depart for London on a Tuesday will often find tickets for as low as $861. If your travel schedule is flexible, try to avoid departing on a Saturday because tickets tend to average around $1,092. These prices are subject to change though, so be sure to set up a Price Alert for flights to London.
What is the cheapest time of day to depart on your flight to London?
Flying to London from Portland in the afternoon is the least expensive time of day to depart. momondo users have found prices as low as $787 when looking at flights departing in the afternoon. Flights to London are more costly in the evening, with an average ticket price of $984. Departure times in the evening fall within the peak daily travel times, which is why tickets can be more expensive.
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 to London?
You are more likely to see cheaper flights to London from Portland when booking 26 weeks ahead of your departure date. In general, you can expect to find flights to London for around $866 when searching 26 weeks out.However, flight prices might be lower outside of this timeframe. For example, people recently found flights to London from Portland for as low as $825 on momondo.
What cabin class options are available on Portland to London flights?
There are 3 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.
What is the cheapest airline that flies from Portland to London?
Icelandair, WestJet, and British Airways are the most popular carriers operating from Portland to London
What airlines fly to London?
British Airways, Iberia and American Airlines are the top three most popular airlines that fly to London from Portland according to our data. British Airways is the first choice among our users, with 58% of people opting to fly with this airline when traveling to London. Keep in mind that there are 12 different airlines that fly to London on a routine basis, so you have a few additional options to choose from.
How many flights depart from Portland to London on average per day?
As of April 2025, 7 flights take off from Portland and land in London each day. The most common flight departure time for this route is 7:00PM, with 100% of daily flights taking off in the evening.
How many flights depart from Portland to London on average per week?
The number of flights available between Portland and London is 49 per week as of April 2025. The most frequent departure day is Mon, with 14% of weekly flights leaving 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
How far is Portland to London by plane?
The distance between Portland and London is about 4909.8 mi. Typically, this will take 9h 35m by plane in normal conditions.
When did momondo last update prices for flights from Portland Airport to London?
Prices for flights from Portland Airport to London are refreshed on a daily basis.
How many operators does momondo search for flights from Portland Airport to London?
The number of operators available for flights from Portland Airport to London is 12 as of April 2025.
How old do you have to be to fly from Portland Airport to London?
Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify 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 required travel and health documents for your London trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at London. We recommend that you seek guidance from your airline or a reliable third party such as IATA.
What is the most popular plane model from Portland to London?
momondo data reveals that the most frequently booked plane model on the route from Portland to London is Boeing 787-10 Dreamliner, representing 75.14% of all bookings. The subsequent popular models are Boeing 787-8 Dreamliner at 15.19%, Boeing 787-9 Dreamliner at 4.71%, and Boeing 787 Dreamliner at 2.16%.
What is the most popular airline from Portland to London?
Based on momondo bookings for flights between Portland and London, the leading airline is British Airways, making up 38% of the total bookings. Other popular airlines include Iberia with 17%, American Airlines with 10%, and Icelandair with 10%.
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 $491 | Free Cancellation | Rating 7.0 487 reviews | |||
| PriceFrom $580 | Free Cancellation | Rating 7.0 9,240 reviews | |||
| PriceFrom $584 | Free Cancellation | Rating 7.0 2,698 reviews | |||
| PriceFrom $612 | Free Cancellation | Rating 8.0 7,929 reviews | |||
| PriceFrom $616 | Free Cancellation | Rating 6.6 6,835 reviews | |||
| PriceFrom $617 | Free Cancellation | Rating 7.8 1,334 reviews | |||
| PriceFrom $620 | Free Cancellation | Rating 7.2 10,000 reviews | |||
| PriceFrom $625 | Free Cancellation | Rating 7.4 642 reviews | |||
| PriceFrom $629 | Free Cancellation | Rating 7.6 1,275 reviews | |||
| PriceFrom $645 | Free Cancellation | Rating 7.4 8,696 reviews |
Alaska Airlines Flights From Portland to London
The lowest priced Alaska Airlines flight from Portland to London from the last 72 hours was $868. Generally, Alaska Airlines has 7 flights on this route every week with an average price of $1,072. Alaska Airlines is rated 8.0/10 by our users.
Finnair Flights From Portland to London
Across 1,275 Finnair reviews on momondo, the average score is 7.6/10. Finnair flies from Portland to London about 7 times each week, with ticket deals ranging from $629 to $788. Price data is based on momondo searches in the last 72 hours.
Traveling 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?
All flight searches from Portland to London on momondo can be filtered to show those which offer flexible booking policies.
How can momondo help me find flights from Portland to London?
momondo helps you find the best flight between Portland and London by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.
I’m not ready to book a flight from Portland to London right now. Can momondo alert me if prices change?
Yes. momondo can track prices for Portland to London flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.