$391 Find Cheap Flights from Portland to the United Kingdom

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Portland to the United Kingdom departing on 9/2. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

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Cheap Flights from Portland to the United Kingdom

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours
London
London1 stop$729
Edinburgh
Edinburgh1 stop$936
Manchester
Manchester2 stops$1,009
London
London1 stop$729
Edinburgh
Edinburgh1 stop$936
Manchester
Manchester2 stops$1,009

Book Cheap Portland to the United Kingdom Plane Tickets

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Portland to the United Kingdom that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Portland to the United Kingdom

Fri, May 8 - Wed, May 13
Delta Logo
6:25 am - 7:15 am
PWM
-
LHR
19h 50m
1 stop
Delta Logo
9:55 am - 11:12 pm
LHR
-
PWM
18h 17m
2 stops
$729Delta
Mon, May 4 - Mon, May 18
KLM Logo
2:51 pm - 8:50 am
PWM
-
LHR
12h 59m
1 stop
KLM Logo
11:45 am - 12:43 am
LHR
-
PWM
17h 58m
2 stops
$730KLM
Wed, May 6 - Mon, May 11
Delta Logo
12:46 pm - 8:50 am
PWM
-
LHR
15h 04m
2 stops
Delta Logo
8:40 am - 11:09 pm
LHR
-
PWM
19h 29m
2 stops
$733Delta
Fri, May 8 - Wed, May 13
KLM Logo
2:38 pm - 8:50 am
PWM
-
LHR
13h 12m
1 stop
KLM Logo
3:50 pm - 12:43 am
LHR
-
PWM
13h 53m
1 stop
$736KLM
Fri, May 8 - Fri, May 15
Virgin Atlantic Logo
2:05 pm - 1:45 pm
PWM
-
LHR
18h 40m
2 stops
Virgin Atlantic Logo
6:30 am - 11:09 pm
LHR
-
PWM
21h 39m
2 stops
$750Virgin Atlantic
Wed, Jul 29 - Fri, Aug 28
Virgin Atlantic Logo
6:57 pm - 1:15 pm
PWM
-
LHR
13h 18m
1 stop
Virgin Atlantic Logo
6:30 am - 10:33 pm
LHR
-
PWM
21h 03m
2 stops
$778Virgin Atlantic
Wed, May 6 - Mon, May 11
Turkish Airlines Logo
7:20 am - 9:55 am
PWM
-
LGW
45h 35m
2 stops
Turkish Airlines Logo
7:05 am - 11:03 pm
LGW
-
PWM
20h 58m
2 stops
$921Turkish Airlines
Wed, May 6 - Mon, May 11
Turkish Airlines Logo
7:20 am - 9:55 am
PWM
-
LGW
21h 35m
2 stops
Turkish Airlines Logo
5:35 pm - 11:03 pm
LGW
-
PWM
34h 28m
2 stops
$937Turkish Airlines
Fri, Jun 5 - Fri, Jun 12
United Airlines Logo
5:15 am - 10:25 am
PWM
-
MAN
24h 10m
2 stops
United Airlines Logo
9:00 am - 2:26 pm
MAN
-
PWM
34h 26m
2 stops
$1,172United Airlines
Fri, May 22 - Mon, May 25
United Airlines Logo
2:20 pm - 10:25 am
PWM
-
MAN
15h 05m
2 stops
United Airlines Logo
6:00 am - 7:27 pm
MAN
-
PWM
18h 27m
2 stops
$1,268United Airlines
Booking Insights

KAYAK's insights & trends for Portland to the United Kingdom flights

Get data-powered insights and trends into flights from Portland to the United Kingdom to help you find the cheapest flights, the best time to fly and much more.

Which airlines provide the cheapest flights from Portland to the United Kingdom?

The cheapest round-trip price for the route for each airline clicked by KAYAK users in the last 72 hours.

In the past 3 days, the cheapest round-trip tickets from Portland to the United Kingdom were found on Delta ($729) and Turkish Airlines ($921).

Good to know

Cheapest flight$336
Flight from Portland to London Heathrow Airport

FAQs - booking United Kingdom flights

  • How does KAYAK find such low prices on flights from Portland to the United Kingdom?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Portland to the United Kingdom.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Portland to the United Kingdom?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from Portland to the United Kingdom is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Portland to the United Kingdom?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly from Portland to the United Kingdom with an airline and back with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Portland to the United Kingdom?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying from Portland to the United Kingdom up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top 3 airlines serving from Portland to the United Kingdom

 
Need help choosing which airline to fly with from Portland to the United Kingdom? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.9
DeltaOverall score based on 8450 reviews
8.1Boarding
7.9Comfort
8.5Crew
7.2Food
7.8Entertainment
Airline reviews

WiFi didn’t work. Flight delayed 3 hours Crew members were illiterate Seat lean back did not work.

2.0 MediocreNicholas, Apr 2026
LGA - CLT
Read more Delta reviews

WiFi didn’t work. Flight delayed 3 hours Crew members were illiterate Seat lean back did not work.

Flight was delayed, we could have been notified earlier and in a consistent manner. App was not refreshing for another passenger to get the latest flight status. We could have stayed and waited at the hotel instead of waiting at the airport had we known the flight was going to delayed for more than 5 hours. The toilet is too tight, and needs to be cleaned more frequently (every hour). The entertainment screen froze, the touch screen not responding to touch. We were upgraded to comfort, it is more comfortable than regular economy seats.

Everything was great. The only issue is unfixable. Seats are too small. 😁🤪

This wasn't my experience with Delta. It was just the Pegasus flight. Seats were very hard. Staff was kinda rough. Not very nice. Charged me for snacks. For a 4 hour flight I would've expected more.

Crew was nice, meal was good. Entertainment had to be rebooted 3 times and still did not work. Turns out there was residue on screen, it needed to be cleaned to prevent the touchscreen buttons from continuously activating. I had entertainment for the last 45 minutes of a 5 hour 45 minute flight. Really unacceptable for first class. Flight attendent indicated your cleaning solution creates this problem. Seems as if this is widely known, you should be using a different product or cleaning better. Really really disappointing which simply added to the wi fi on your planes with reliably never ever works.

The baggage belt was not updated on the Delta App and was displayed on the wrong belt board. Was not expecting this to happen.

The plan was delayed and left DC 90 minutes late. However, it showed a 20 minute delay on the delta app, then a 12 min delay. It turned out to be an hour delay. I found out where the plane was with flightaware. Stop keeping customers in the dark about what is going on.

Everything went smoothly, although the usual gripes about airline travel were still present: the boarding process is inefficient, the snack selection is limited, and so on. Since there was extra space on the flight, the gate agent rearranged many people's seats to put people on the aisles and windows, leaving the middle seats empty, as much as possible, which was pretty great.

Landed without a gate ready. Plane is extremely old and dirty.

All the amenities was wonderful, if they could keep their prices that low. I'd fly with them all the time.

United Airline crews were very friendly and very attentive. 12 hours flight was gone like in a shorter one.

Delayed - weather wasn't bad at either end. Also sat on tarmac in ORD.

Food was surprisingly delicious. Space in the seat is horrible when the seating front is reclined. Movie offerings were terrible. Crew was friendly and helpful.

They told us yesterday APR21st that they were cleaning the plane and we got delayed. After that they said they didn't had any crew for the flight so they cancelled the flight till next day.

The crew was great. Very friendly and responsive. The plane was old, small and tight. We ran out of overhead space and I had to check. Middle seat was particularly tight.

Flight itself excellent, but delayed so missed connection & got to destination 2 hrs later

The flight crew on this leg of my trip was very friendly and pleasant. Every one of them was humorous, as well as helpful and accommodating. This group was BY FAR the best crew I’ve flown with. They deserve kudos.

boarded early to only find out that flight would sit at gate for 45 min to an hour. Landed in chicago and sat on runway for over an hour before got to gate. Total delay was extensive for a 45 min flight door to door.

The flight was delayed from take off because only one runway was operational in San Francisco.

Several missed and almost missed connections. It felt like everything was being patched together last minute without enough resources and it ended up being an extremely stressful experience that basically ruined our weekend on the west coast. What a waste.

The business class layout of chairs was weired. You are sitting directly across stranger.,

We did not have enough time to make our connecting flight. As a result, we were put onto a different airline for our second leg. The different airline was NOT comparable to British Airlines, and our arrival was significantly delayed. The actual flight on BA was amazing.

Tv screens and movie selection v good. Friendly staff. They were really worried about max capacity and room for carryons. That is never fun but i had no problem finding space when I boarded.

My flight to London from Philadelphia was cancelled due to weather.

Disliked having to wait a little longer to disembark from the plan when we landed in London

Food should be better quality. Video screens have poor resolution and the library of movies is poor. The other airlines are much better.

The trip was smooth but the crew were very abrupt, snatching things before finished and being quite snappy when asked questions.

My wife and I love to travel, so we fly a lot. We've already logged 381,075 miles and with practically every major airline. But this flight was very disappointing. It started off well, with no delays and a new plane. But when lunchtime approached, all that good impression was ruined. Instead of white tablecloths, we were offered small, dark placemats, which, as it turned out, were perfectly adequate for the food. All the food offered—and my wife and I only took fish, and the meat—was not just bad, it was downright disgusting and not heated enough. The same applies to the appetizers. This was the first time in many years of traveling that we've been offered such disgusting food.

Lost luggage stuck no clothes and no word after 2 days leaving on cruise no stuff or clothes

Don’t know they cancelled the flight day before I was to leave. They sent a email at 9:00 pm at night saying they cancelled. That is the smooth way to say we don’t want your business! I think they didn’t have enough people booking so they cancelled the flight! It’s all about the money anymore there is no honesty in business.

Everything you need to know for your flight from Portland to the United Kingdom

Information on your arrival and departure airports