Cheap flights from Portland (PWM) to London (LON) from $329

Portland (PWM) is the airport you will fly out of if you book a flight from Portland to London. You should not have trouble finding flights to London from Portland; the airport handles an average of 0 outbound flights to London per day. You should also have plenty of airline options to choose from since 3 airlines have flights from the Portland airport to London. It is only a 2.9 mi journey to Portland (PWM) from Portland’s city center.

Yes, there are multiple flights from Portland, Maine to London for under $700. The cheapest flight booked recently is on American Airlines for just $617, but on average you can expect to pay $671.

Flying on American Airlines is currently your cheapest option to London, with prices starting at $617. Additional round-trip tickets that might be worth considering are offered by United Airlines and JetBlue, with the lowest prices starting at $634 and $643, respectively. American Airlines is 43% cheaper than the average price of flights available within the next 90 days to this destination.

To fly one-way, consider booking your trip with Air Canada, which is currently one of the cheapest options available, starting at $557. American Airlines flights start at $608 while deals on TAP AIR PORTUGAL start at $869 one-way.

Most travelers choose Portland - London Heathrow, Portland - London Gatwick or Portland - London City when deciding on the best route from Portland, Maine to London.

This is defined as Portland Airport (PWM) and London Heathrow Airport (LHR). Codes like London Heathrow Airport are often used to just call airports uniquely. While you’re still figuring out your travel plans, it’s not a bad idea to learn the names and codes of other airports around these areas: London Gatwick Airport (LGW), London Stansted Airport (STN), London Luton Airport (LTN), London City Airport (LCY), London Southend Airport (SEN).

The amount of baggage you can bring on your Portland to London flight depends on the airline and the type of fare you've chosen. After entering your flight details, you'll be able to view the specific baggage policies for each deal in the search results. Keep in mind that certain deals may offer additional baggage allowance.

Yes, Cheapflights allows you to browse and filter Portland to London flight deals by airline. After entering your origin and destination, use the available filters to view flights offered by airlines.

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

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

Yes. Cheapflights offers flight deals from Portland to London by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

Many airlines flying from Portland to London offer the option to travel with pets. After selecting a flight deal, you can find more information about the airline's pet policy on their official website or by contacting the airline directly. Please note that additional fees and restrictions may apply.

Yes, you can often find last-minute deals on Portland to London flights on Cheapflights. However, these deals can vary and may not always be available. We recommend checking back frequently or signing up for price alerts for the most up-to-date deals.

The Portland, Maine to London flight deals you see on this page were last updated on 5/31.

American Airlines, Delta and United Airlines are the most popular airlines when flying from Portland, Maine to London.

Currently, November is the cheapest month in which you can book a flight from Portland, Maine to London (average of $652). Flying from Portland, Maine to London in June is currently the most expensive (average of $1,114). 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.