$637 Find Cheap Flights from London to Portland - Compare and Save

Among airlines operating London to Portland flights:

• American Airlines: offers free seat selection
• Iberia: offers free seat selection

Extra legroom and free seat selection availability depends on fare class and route.

Only British Airways operates flights between London and Portland.

Flights from London to Portland may depart from several airports in London area, including London City (LCY), London Gatwick (LGW), London Heathrow (LHR), London Luton (LTN), London Southend (SEN) and London Stansted (STN). Flights usually arrive at Portland (PDX).

Here are some options for this route, based on selected ticket types and cabin classes:

• British Airways: a cabin bag and a checked bag in Economy Class
• Finnair: a cabin bag and a checked bag in Economy Class
• American Airlines: a cabin bag and a checked bag in Economy Class

Bag allowance can vary by ticket type, cabin class, route and airline, so travelers should check the fare details before booking.

Four cabin classes are available on flights from London to Portland:

• Economy Class
• Premium Economy Class
• Business Class
• First Class

Prices vary by airline.

On this route, layover flights are cheaper than nonstop options on average. Layover fares average $817 round-trip via Denver Intl (DEN), compared to $1,045 for nonstop.

There is no standard. Checked-bag policies vary by airline on this route. Most carriers charge $74–$100 for the first checked bag in economy. Premium fares and elite-status bookings typically include a free checked bag.

One-stop flights from London to Portland most commonly connect through:

• Reykjavik Keflavik Intl (KEF) - 52% of one-stop connections
• Seattle/Tacoma Intl (SEA) - 21% of one-stop connections
• Denver Intl (DEN) - 6% of one-stop connections
• Vancouver Intl (YVR) - 6% of one-stop connections

Reykjavik Keflavik Intl (KEF) handles the largest share of one-stop connections on this route.

Yes. Being flexible with your travel dates can save you up to 19% on the London to Portland route. Wednesday is the cheapest departure day at $896 round-trip on average, while Sunday is the most expensive at $1,095, a difference of $199. KAYAK's flexible dates feature shows options up to 3 days before and after your selected dates, making it easier to compare nearby fares.

A flight is considered delayed when it departs 15 minutes or more after its scheduled time. This is the standard used by the US Department of Transportation and most airline industry reporting. On the London to Portland route, 19% of flights were delayed in the past 3 months, with delays averaging 2 hours 7 minutes.

Afternoon is the busiest departure period on London to Portland flights, with 100% of flights leaving in that window. Morning departures account for 0%, evening flights for 0%, and night flights for 0%.

Some of the most popular sights in Portland are Moda Center, Oregon Convention Center and OHSU Center for Health and Healing. These are among the most viewed places in Portland on KAYAK.

These are the earliest and latest flight times available from London to Portland:

• Earliest: departs at 1:35 pm and lands at 11:42 pm
• Latest: departs at 3:40 pm and lands at 1:47 am.

The flight takes about 10h 07m.

Last-minute fares on this route - booked within 2 weeks of departure - run 6% above the route average of $993. Book 2 weeks before departure for the lowest fares.

A nonstop flight from London to Portland takes 10h 07m, covering 4,904 miles.

Yes, a valid passport is required for this international route. Many destinations require at least six months of validity beyond your travel dates. Check your passport expiry well before booking.

Yes. Based on fares seen in the past 5 days, round-trip prices on this route showed a wide range, from about $807 to $4,814. That means the highest observed fare was about 6x higher than the lowest one.

One-way fares from London to Portland are currently lower than usual. Average one-way flight prices are about $640, which is 21% below the typical average for this route.

British Airways is the only airline operating London to Portland flights. 81% of its flights are on time.

Afternoon flights have the fewest delays on this route. Delays tend to pile up throughout the day as one late flight pushes the next, so earlier departures are usually more reliable.

Flying via Amsterdam Schiphol (AMS) gives the shortest average 1-stop total travel time at 12h 55m, compared with 13h 01m via Salt Lake City (SLC) and 13h 02m via Seattle/Tacoma Intl (SEA).

Portland is 8 hours behind London (Pacific Time vs British Time). Plan for the time shift when scheduling connections or first-day activities.

Portland Airport (PDX) hosts 5 major car rental companies, with daily rates starting from around $24 for economy cars. Top options include:
• Thrifty
• Dollar
• Hertz
• Sixt
• Payless

Round-trip flights from London to Portland range from $835 to $1,194, with an average of $993 over the past 12 months. Anything below $835 counts as a good deal.