$220 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 3/29. 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$576
Edinburgh
Edinburgh2 stops$632
Manchester
Manchester2 stops$628
London
London1 stop$576
Edinburgh
Edinburgh2 stops$632
Manchester
Manchester2 stops$628

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

Mon, Jan 26 - Mon, Feb 2
Austrian Airlines Logo
8:40 am - 8:25 am
PWM
-
LHR
18h 45m1 stop
Austrian Airlines Logo
6:00 am - 6:50 pm
LHR
-
PWM
17h 50m2 stops
$576Austrian Airlines
Mon, Jan 26 - Mon, Feb 2
Austrian Airlines Logo
8:40 am - 11:05 am
PWM
-
LHR
21h 25m1 stop
Austrian Airlines Logo
12:00 pm - 6:50 pm
LHR
-
PWM
11h 50m1 stop
$606Austrian Airlines
Mon, Feb 9 - Mon, Feb 16
Virgin Atlantic Logo
5:30 am - 9:55 am
PWM
-
GLA
23h 25m2 stops
Virgin Atlantic Logo
6:05 am - 11:06 pm
GLA
-
PWM
22h 01m2 stops
$607Virgin Atlantic
Tue, Feb 10 - Tue, Feb 17
Delta Logo
12:10 pm - 10:30 am
PWM
-
MAN
17h 20m2 stops
Delta Logo
1:30 pm - 11:06 pm
MAN
-
PWM
14h 36m1 stop
$628Delta
Sat, Jan 24 - Sat, Jan 31
Multiple Airlines Logo
2:35 pm - 10:10 am
PWM
-
MAN
14h 35m2 stops
Multiple Airlines Logo
1:30 pm - 10:27 pm
MAN
-
PWM
13h 57m1 stop
$629Multiple Airlines
Sun, Feb 1 - Sun, Feb 8
United Airlines Logo
6:00 am - 9:20 pm
PWM
-
LHR
10h 20m1 stop
United Airlines Logo
6:50 am - 6:50 pm
LHR
-
PWM
17h 00m2 stops
$630United Airlines
Mon, Feb 9 - Mon, Feb 16
Virgin Atlantic Logo
5:30 am - 9:00 am
PWM
-
LHR
22h 30m1 stop
Virgin Atlantic Logo
6:30 am - 11:06 pm
LHR
-
PWM
21h 36m2 stops
$631Virgin Atlantic
Mon, Feb 9 - Mon, Feb 16
Delta Logo
12:10 pm - 10:40 am
PWM
-
EDI
17h 30m2 stops
Delta Logo
5:50 am - 11:06 pm
EDI
-
PWM
22h 16m2 stops
$632Delta
Mon, Jan 26 - Mon, Feb 2
United Airlines Logo
3:12 pm - 10:50 am
PWM
-
LHR
14h 38m2 stops
United Airlines Logo
6:50 am - 6:52 pm
LHR
-
PWM
17h 02m2 stops
$634United Airlines
Fri, Apr 3 - Tue, Apr 7
Multiple Airlines Logo
6:00 am - 6:20 am
PWM
-
LGW
19h 20m1 stop
Multiple Airlines Logo
1:05 pm - 11:47 pm
LGW
-
PWM
15h 42m1 stop
$738Multiple 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.

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 October, when tickets cost $619 (return) on average. On the other hand, the most expensive months are June and July, when the average cost of round-trip tickets is $1,208 and $1,188 respectively.

Good to know

Low seasonJanuary
Cheapest flight$220
Best time to beat the crowds with an average 20% drop in price.
Most popular time to fly with an average 1% increase in price.
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 8019 reviews
7.3Food
7.9Entertainment
8.1Boarding
8.5Crew
7.9Comfort
Airline reviews

The gate attendants and the crew were terrible. Because of high winds, they needed to carry more fuel, so they had to get volunteers to take the next flight at 6 am the next day. They did a terrible job of it - our flight ended up taking off just under 3 hours of the scheduled time. I hope to never fly Delta again.

2.0 MediocreBarbara, Dec 2025
PHL - MSP
Read more Delta reviews

The gate attendants and the crew were terrible. Because of high winds, they needed to carry more fuel, so they had to get volunteers to take the next flight at 6 am the next day. They did a terrible job of it - our flight ended up taking off just under 3 hours of the scheduled time. I hope to never fly Delta again.

Did not realize internet screen was hidden between seats and no info printed!!!!

2 of the seats in row 31 the entertainment system was not working, and one seat the tray table did not go all the way down. Flight arrived early and departed on time which was great.

Very good flight crew and very nice people staff were incredible especially the gate agent

Waited at the usual crowded gate at DCA where one ends up standing up because there aren't enough seats.

The flight was delayed for about 2 hrs. Other than it, it was good.

Advertised fruit trays with cheese, but only snacks handed out!

The plant way delayed departing by 3 hours. It was an old airplane with broken seats and armrests. The bathroom made a hollering sound. A really crappy flight experience and travel day all around.

Flight delays both to Detroits and return flight . The flight to Detroit was associated with mechanical difficulty

I am extremely disappointed that delta internal pilot manuals now refer to the Gulf of Mexico as the “gulf of America”. You can bow down to the Orange turd on your own. I will never fly delta again

cabin crew was OK, food was OK, the trip from the US to Munich was actually pretty bad comfort wise. Noisy aircraft, lights never dimmed even in Business class (night flight) barely sufficient amenities for the price. I have millions of miles with United but TBH American is gaining ground and Delta has always been marginally better then United although on paper United has more longes and cheaper upgrades.

Pushed back only to get deplaned due to a tire damaged by ground crew. They did at least go pretty fast. The bathrooms should be banned under the Geneva convention. No room to even sit straight on the toilet. The under-seat entertainment units block what little leg room there is.

Essy to get on. The hostess gave very little pop, the plane was late getting in, and we are still waiting for our bags. This sucks. :/

Sat next to a one year old. She crawled all over the place and made me laugh.

Not United Airlines' fault. It's ORL airport's fault.

Great flight. On time boarding. Smooth flight and on time arrival at EWR. The flight crew was marvelous and there was a great selection of movies on the entertainment system. Our bags were at the carousel before we got there. Another excellent flight from United.

United airlines has the best customer experience from booking to arrival. I always fly United airlines. The mileage program is excellent

They did the one thing that really matters - got to Chicago early.

I liked the snacks and the flight attendants were friendly.

Gate agent at Frankfurt was terrible. She denied PRE boarding even as it was printed on the boarding pass. Refused to look at the boarding pass and literally shouting for no reason. Frankfurt airport has horrible and rude staff who avoids trying to answer any question at all. Overall, horrible experience.

Good. No issues except a slight delay. Crew came in late.

Not a pleasant experience, service was poor. Didn't like it

It was good. I prefer JB over other airlines.I just wish we had headphones for the films, but other than that - good.

The ride share experience in JFK is terrible. After traveling on a flight, then you need to take a subway to the last stop to get an uber or lyft. Unacceptable. Bad job JetBlue for permitting JFK and Port Authority to do this to your passengers.

Checking In on JetBlue site was impossible. It hung up on REAL ID. Even my Global Entry did not help. Luckily, on Kayak site it was a breeze. Entire flight the temperature was COLD! Otherwise the crew was great!

The flight was two hours late due to a computer fault and resulting maintenance. Nothing was offered as compensation beyond bottles of water during the time we were deplaned and waiting in the terminal.

Very pleasant flight attendants. Gate crew rather loud chatting with each other.

Four plus hour flight delay in New York caused us to take off after 11:30pm. We didn’t arrive at our hotel until five hours after check in. Started the trip off feeling exhausted.

Plane was in bad shape. TV’s and WiFi didn’t work. Plane need a refresh. Not enough room for bags.

There was a fowl odour coming from the lavatory the entire flight

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

Information on your arrival and departure airports