$255 Find Cheap Flights from Portland to the United Kingdom - Compare and Save

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 9/5. 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.
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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$880
Edinburgh
Edinburgh2 stops$801
Manchester
Manchester2 stops$747
Birmingham
Birmingham2 stops$959
Belfast
Belfast1 stop$915
Inverness
Inverness2 stops$756
Bristol
Bristol1 stop$1,088
Aberdeen
Aberdeen1 stop$900
Leeds
Leeds1 stop$977
London
London1 stop$880
Edinburgh
Edinburgh2 stops$801
Manchester
Manchester2 stops$747
Birmingham
Birmingham2 stops$959
Belfast
Belfast1 stop$915
Inverness
Inverness2 stops$756
Bristol
Bristol1 stop$1,088
Aberdeen
Aberdeen1 stop$900
Leeds
Leeds1 stop$977

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

Wed, Nov 11 - Mon, Nov 16
British Airways Logo
5:45 pm - 2:15 pm
PDX
-
GLA
12h 30m
1 stop
British Airways Logo
6:35 am - 3:50 pm
GLA
-
PDX
17h 15m
1 stop
$412British Airways
Wed, Oct 14 - Wed, Oct 28
Multiple Airlines Logo
3:30 pm - 9:55 pm
PDX
-
MAN
22h 25m
2 stops
Multiple Airlines Logo
6:00 am - 6:00 pm
MAN
-
PDX
19h 00m
2 stops
$747Multiple Airlines
Mon, Jan 18 - Sun, Feb 28
Icelandair Logo
2:45 pm - 10:45 am
PDX
-
MAN
12h 00m
1 stop
Icelandair Logo
11:55 am - 5:00 pm
MAN
-
PDX
13h 05m
1 stop
$763Icelandair
Mon, Sep 21 - Tue, Oct 6
Icelandair Logo
3:30 pm - 1:25 pm
PDX
-
GLA
13h 55m
1 stop
Icelandair Logo
2:20 pm - 5:55 pm
GLA
-
PDX
11h 35m
1 stop
$763Icelandair
Thu, Aug 20 - Wed, Sep 2
Multiple Airlines Logo
3:30 pm - 10:15 am
PDX
-
EDI
34h 45m
3 stops
Multiple Airlines Logo
9:20 am - 11:50 am
EDI
-
PDX
34h 30m
2 stops
$787Multiple Airlines
Mon, Dec 14 - Fri, Dec 25
British Airways Logo
5:45 pm - 4:35 pm
PDX
-
GLA
14h 50m
1 stop
British Airways Logo
6:35 am - 3:50 pm
GLA
-
PDX
17h 15m
1 stop
$879British Airways
Wed, Nov 11 - Thu, Nov 26
Iberia Logo
5:45 pm - 11:20 am
PDX
-
LHR
9h 35mnonstop
Iberia Logo
10:05 am - 7:43 pm
LHR
-
PDX
17h 38m
1 stop
$882Iberia
Mon, Jan 18 - Fri, Jan 22
Delta Logo
7:10 am - 10:40 am
PDX
-
LHR
19h 30m
1 stop
Delta Logo
6:30 am - 11:20 am
LHR
-
PDX
12h 50m
1 stop
$884Delta
Sun, Jan 17 - Fri, Jan 22
Delta Logo
7:00 am - 8:05 am
PDX
-
LHR
17h 05m
1 stop
Delta Logo
6:30 am - 11:20 am
LHR
-
PDX
12h 50m
1 stop
$884Delta
Wed, Nov 18 - Mon, Nov 23
Iberia Logo
6:00 am - 6:50 am
PDX
-
LHR
16h 50m
1 stop
Iberia Logo
7:40 pm - 11:20 am
LHR
-
PDX
23h 40m
2 stops
$897Iberia
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.

What is the cheapest Portland to the United Kingdom flight route?

Data is based on round-trip flight searches on KAYAK over the past month.

The cheapest ticket to the United Kingdom from Portland found in the last 5 days was to London, at $830 round-trip. The most popular route is from Portland (PDX) to London Heathrow Airport (LHR), and the cheapest round-trip airline ticket found on this route in the last 5 days was $830.

What is the cheapest time of day to fly to the United Kingdom?

The average price for all round-trip flights from Portland to the United Kingdom depending on the time of departure, clicked by users on KAYAK in the last 2 weeks.

The cheapest time of day to fly to the United Kingdom is generally in the evening, when round-trip flights cost $786 on average. Morning departures are around 100% cheaper than evening flights, on average. The most expensive time of day to fly to the United Kingdom is generally at night, which is peak travel time and where the average cost of a ticket is $996.

What is the cheapest month to fly from Portland to the United Kingdom?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Portland to the United Kingdom, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Portland to the United Kingdom is January, when tickets cost $714 (return) on average. On the other hand, the most expensive months are July and June, when the average cost of round-trip tickets is $1,237 and $1,185 respectively.

What’s the cheapest day of the week to fly from Portland to United Kingdom?

The average price of all round-trip flights from Portland to the United Kingdom clicked on KAYAK for each day over the last 12 months.

When flying from Portland to United Kingdom, you should consider leaving on a Monday and avoid Saturdays if you are looking for the best rates. For your return to Portland, you’ll find the best rates on Wednesdays and the most expensive ones on Sundays.

How far in advance should I book a flight from Portland to the United Kingdom?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Portland to the United Kingdom, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from Portland to the United Kingdom, you should book around 1 week before departure. For the absolute cheapest price, our data suggests you should book 5 weeks before departure.

Good to know

Low season

January

Cheapest flight

$255
Best time to beat the crowds with an average 19% drop in price.
Most popular time to fly and prices are also 5% lower on average.
Flight from Portland to London Luton 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.

Top tips for finding cheap flights to the United Kingdom

  • Looking for a cheap flight? 25% of our users found tickets from Portland to the following destinations at these prices or less: London $403 one-way - $975 round-trip

Reviews of the top 5 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.
7.8
DeltaOverall score based on 8494 reviews
8.5Crew
7.8Comfort
7.2Food
8.1Boarding
7.8Entertainment
Airline reviews

We got stuck on the tarmac taxiing after landing early so we didn’t get off the plane until an hour later than we thought we would

2.0 MediocreAlyssa, Jul 2026
PDX - LAX
Read more Delta reviews

We got stuck on the tarmac taxiing after landing early so we didn’t get off the plane until an hour later than we thought we would

The crew were efficient. The pilots seemed professional. It was a bit chilly in our seats. The sheet provided weren’t very helpful.

Bus to plane was delayed for no apparent reason and our luggage was still on the belt when they shut it off. Took about 20 minutes to turn it back on to get our luggage.

I haven’t flown economy in over 20 years but it was not bad. Room by my feet for my bag and seat was roomy enough. Surprised in a good way.

Second flight in a row where the entertainment system is broken. 5 hour long flight with no entertainment and flight attendants did not seem interested in resolving the matter. Very shocked to be treated this poorly considering I paid for a first class experience and have Diamond Medallion status.

The service from the flight attendants were of supreme quality. They greeted and treated everyone with a wide smile. This is totally absent nowadays. Kudos to them!!!!

My seat had no padding, it was literally plywood with a plastic cover. I could not change seats on my 10 hour flight. My excitement for this trip helped me deal with the pain.

The flight was great. The crew were a little terse about the size of my bag. It fit fine.

The flights were on time- Great service Would have liked more options for food choices.

The brakes on the A220 are sensitive and uncomfortably grabby

Check in at the desk was very slow pus Security, although not Virgin issue at JFK was a nightmare. 50 minuet wait no time to explore airport and get last minuet gifts. total wait 1.5hours

Great staff great experience, made a 2 hour delay very bearable

I was my pleasure to fly virgin on my birthday for my first solo trip ever 🫶🏼

Overall, flight was excellent but check in was very slow for Premium Economy. Economy queue was shorter but we weren't allowed to use it.

The crew was excellent as ever on Virgin. The special meal was poor unfortunately. More significantly when we arrived at Manchester Airport there was no air bridge provided and we had to exit the plane down a rickety stair case. This is unacceptable for a transatlantic flight. Whilst I understand that this is the airport’s fault at the end of the day the airline is responsible for our transportation and needs to do something.

Super friendly and helpful staff, from check-in desk to cabin crew.

Good overall. Cannot fault the airlines. I have had better entertainment systems before ie ice in Emirates but it was not too bad. Food was decent and staff were friendly.

Miami airport needs more thorough signage. It was a long walk from my transport point to the check in desk,

Flight took off an hour late. Had to stay on the tarmac for half an hour after landing. Both annoying.

The crew was very good. However, the equipment was a bit dated. Some of the electronics were not working. To top it, three bags didn’t arrive with me. Two of them were delivered a day later. I’m still waiting for the third bag, I was so looking forward to this virgin Atlantic flight, but, I am disappointed.

Luggage took too long go get off plane in Knoxville. Was almost 45 minutes after the flight landed.

Awful, tons of delays, I got into Chicago multiple hours late meaning I hit the very traffic I tried so desperately to avoid. Just empty apologies from American Airlines text alerts. Trash behavior from a trash airline.

The boarding was as always, the crew tried their best but not enough. The food was a disaster I had dietary restrictions that were half met because the company did not loaded the food for the flight. The entertainment screen was fine but content was not and also they removed the free messaging option from the flight and they charged 30 dollars for that crappy bandwidth. This flight is not worth the cost and the company is going down on quality.

As smooth as you can expect. Some issues with boarding because the previous plane took forever to deplane but overall, a good experience.

DFW-LHR Toilets not kept clean Too cramped. Aisles so narrow crew were constantly banging into people on the aisle seats. Even then, the carts used are reduced width. Other than that it was a decent flight on both legs

Excellent customer service at check in at Austin flight to DFW and excellent customer service from Karren in terminal B at DFW.

The flight itself was fine, but between the man in front of me putting his chair back, and the gentleman next to me who took up 50% of my seat, my back and neck are destroyed from the flight. I’m hoping for a better outcome flying back.

Flight boarded without pilots. Sat on plane for 3 hrs. after over an hour late boarding. Plane never took off. Had to deplane near midnight. Line for rebooking was 3 hours + long. I had to leave.

I love the Kayak has keep on updating me about flight status as it was delayed for 30mins. as well notifications to book seat and if any change on booking. Tickets were also cheap compared to British Airways online website. No hidden charges or terms n conditions. Keep it up!!!

I sat in row 38 seat D. The headphone jack was nearly broken. The charging port was completely broken. My under seat space was compromised by a little metal box not seen under all seats so there was less room for my bag (which ended up having to go under the empty middle seat). These things could have been better. One of the flight attendants walked by me while my eyes were closed but I was awake waiting for breakfast and didn’t try to wake me for meal- and then when I asked about it didn’t offer to give me a pack I loved the other flight attendant - he was very kind funny witty and made extra efforts my comfort Overall everyone was polite, flight was smooth Off boarding was a ridiculously long process and should have been avoided if possible

I DO NOT recommend Iceland air...missed connecting flight.....paid for isle seat upgrade for health reasons...had to do that over....baggage left in the rain so clothes got soaked other items ruined....called customer * dont care* service

The ticket was reserved in my name but not paid for by underpricer. Alaska airlines was unable to issue my ticket (could not connect the ticket with the PNR) due to an error with underpricer and I spent the better part of 2 hours at the ticket counter trying to rectify.

Damage May baggage and I report the airport agant and they see it

Crew was very friendly. Need lay flat beds! More snacks

Good. Rxception is the Entertainment - movies and TV shows all out of date…

I liked the crew but not the uncomfortable seats and lack of movie and tv selection.

They cancelled our connecting flight resulting in another layover reaching our final destination 8 hours later than scheduled.

On-time arrivals and departures. Crew helpful and friendly. Yet everything costs extra: seat selection, food, even airphones!

I had no idea that my ticket only paid for my right to get on the plane. They charged me $130 for my carry-on bag because it was 1 inch too big she claimed but it wasn’t! Then they wanted another fee for everything. I had no idea that Icelandair had changed to such a bargain basement airline. I was very disappointed.

Screen didn't work, and neither did the button to tilt the seat even though the seat was comfortable

The leg from Portland to Heathrow was great for a business class ticket. The BA leg from Heathrow to Lisbon was terrible. Basically coach seating with an empty seat between you and next passenger. Absolutely no leg room. Should not have been charged for business class and it was a 3 hour flight.

The flat beds. Other than that, the place was not clean.

Good crew and boarding process. Horrible food and one of the most uncomfortable aircraft seats I have ever sat in. The cabin temperature was warm which made it hard for my family to sleep.

The food was ok, but not great. They delayed boarding in Portland and did not enforce group boarding. But the crew was excellent, went above and beyond.

Flight delayed and we were forced to check our carryon bags which was huge inconvenience.

First leg delay, rescheduled second leg without our approval, cancelled rescheduled second leg, rescheduled cancelled leg to three days later...

We were seated in the rear of the plane. Buses arrived to take us to the terminal but there weren’t enough so we waited an hour to leave the plane.

Every flight was late in arrival, last was late in departure and late in arrival, then lost our luggage!

They canceled the flight and would not rebook us within several days

Better food and more space in the seats. Also when doing the web check in both times I was going in to your site the minute you open it and there is not really many seats to choose only to buy!!!

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

Information on your arrival and departure airports