Cheap flights from the United Kingdom to Portland from £303

The cheapest month to fly to Portland from United Kingdom is in September. Flight prices, which tend to average around £558, are often lower during this time because this is during the off-season. If you don’t want to visit Portland in September, then you should wait until February to fly from United Kingdom, when ticket prices are also cheap, with an average price of £581.

The cheapest day to depart on your flight to Portland is on a Wednesday when prices can be found for as low as £672. This is often the case because there is less demand to fly during this day of the week. The most expensive day to fly to Portland is Sunday, with ticket prices averaging around £795.

Flying to Portland from United Kingdom at midday is the least expensive time of day to depart. momondo users have found prices as low as £690 when looking at flights departing at midday. Try not to purchase tickets in the afternoon because they tend to be around £759. Of course, these prices can vary depending on the time of year and what airport you fly to.

Fly from London Heathrow to Portland for the best United Kingdom - Portland flight prices

You are more likely to see cheaper flights to Portland from United Kingdom when booking weeks ahead of your departure date. In general, you can expect to find flights to Portland for around £680 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Portland from United Kingdom for as low as £546 on momondo.

There are 3 cabin classes available to choose from on United Kingdom to Portland flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

JetBlue, Icelandair, and WestJet are the most popular carriers operating from United Kingdom to Portland

British Airways, Virgin Atlantic and KLM are the top three most popular airlines that fly to Portland from United Kingdom according to our data. British Airways is the first choice among our users, with 55% of people opting to fly with this airline when travelling to Portland. Keep in mind that there are 12 different airlines that fly to Portland on a routine basis, so you have a few additional options to choose from.

Historically, on average around 20% of flights between United Kingdom and Portland have experienced a delay on any given week. The average delay length over the past 12 months has been 117 minutes.

Generally, flights departing in the early afternoon tend to experience fewer delays. Flights departing in the early afternoon have, in the past, seen delays more frequently in comparison.

Friday is statistically the day of the week that experiences the fewest delays on this flight route. Wednesday has historically seen more delays on average compared to the rest of the week.

According to our data, British Airways have had the fewest delays on this route over the last 12 months, with about 20% of their flights experiencing any sort of delay.

As of April 2026, 6 flights take off from United Kingdom and land in Portland each day. The most common flight departure time for this route is 13:00, with 100% of daily flights taking off in the afternoon.

45 flights are operational weekly from United Kingdom to Portland as of April 2026. The most popular departure day for this route is Tue, with 16% of flights per week taking off on this day.