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Cheap flights from Portland to the United Kingdom from £155

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Portland to the United Kingdom departing on 10/3. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

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Find the cheapest flights from Portland to the United Kingdom

Cheap return flights

Enter your travel dates to find the best prices.
British Airways Logo
17:45 - 19:00
PDX
-
INV
17h 15m1 stop
British Airways Logo
10:30 - 16:55
INV
-
PDX
13h 25m1 stop
£352British Airways
sön, 1 mar - ons, 11 mar
British Airways Logo
12:02 - 19:00
PDX
-
INV
22h 58m2 stops
British Airways Logo
10:30 - 16:55
INV
-
PDX
13h 25m1 stop
£366British Airways
sön, 1 mar - ons, 11 mar
Multiple Airlines Logo
06:40 - 10:15
PDX
-
INV
19h 35m2 stops
Multiple Airlines Logo
10:20 - 17:40
INV
-
PDX
15h 20m1 stop
£373Multiple Airlines
mån, 6 apr - tors, 16 apr
Multiple Airlines Logo
06:40 - 10:15
PDX
-
INV
19h 35m2 stops
Multiple Airlines Logo
10:20 - 17:40
INV
-
PDX
15h 20m1 stop
£374Multiple Airlines
mån, 6 apr - tors, 16 apr
American Airlines Logo
13:51 - 19:00
PDX
-
INV
21h 09m2 stops
American Airlines Logo
10:30 - 11:07
INV
-
PDX
31h 37m2 stops
£379American Airlines
sön, 1 mar - ons, 11 mar
American Airlines Logo
11:46 - 15:00
PDX
-
INV
19h 14m2 stops
American Airlines Logo
10:20 - 23:37
INV
-
PDX
21h 17m2 stops
£380American Airlines
mån, 6 apr - tors, 16 apr
Virgin Atlantic Logo
13:25 - 16:35
PDX
-
GLA
19h 10m1 stop
Virgin Atlantic Logo
17:20 - 11:25
GLA
-
PDX
26h 05m1 stop
£458Virgin Atlantic
ons, 25 feb - tors, 5 mar
Icelandair Logo
15:30 - 11:40
PDX
-
MAN
12h 10m1 stop
Icelandair Logo
13:05 - 18:00
MAN
-
PDX
12h 55m1 stop
£458Icelandair
mån, 20 apr - mån, 27 apr
Icelandair Logo
15:30 - 14:40
PDX
-
LGW
15h 10m1 stop
Icelandair Logo
15:40 - 11:45
LGW
-
PDX
28h 05m1 stop
£477Icelandair
lör, 9 maj - fre, 22 maj
Virgin Atlantic Logo
13:25 - 19:35
PDX
-
LCY
22h 10m1 stop
Virgin Atlantic Logo
20:05 - 11:25
LCY
-
PDX
23h 20m1 stop
£483Virgin Atlantic
ons, 28 jan - tis, 3 feb

Air Canada flights from Portland to United Kingdom

Our best Air Canada deals on Portland to United Kingdom flight tickets
Air Canada
10 May
PDX10:10Portland
17h 40m
2 stops
LHR11:50London Heathrow
21 May
LHR12:05London Heathrow
29h 25m
2 stops
PDX09:30Portland
£493
Find similar
Air Canada
14 Feb
PDX19:05Portland
32h 45m
1 stop
LHR11:50London Heathrow
22 Feb
LHR14:30London Heathrow
36h 25m
2 stops
PDX18:55Portland
£502
Find similar
Air Canada
7 Jan
PDX09:50Portland
16h 20m
2 stops
LHR10:10London Heathrow
15 Jan
LHR15:00London Heathrow
26h 15m
2 stops
PDX09:15Portland
£550
Find similar

British Airways flights from Portland to United Kingdom

Our best British Airways deals on Portland to United Kingdom flight tickets
British Airways
1 Mar
PDX17:45Portland
17h 15m
1 stop
INV19:00Inverness
11 Mar
INV10:30Inverness
13h 25m
1 stop
PDX16:55Portland
£352
Find similar
British Airways
1 Mar
PDX12:02Portland
22h 58m
2 stops
INV19:00Inverness
11 Mar
INV10:30Inverness
13h 25m
1 stop
PDX16:55Portland
£366
Find similar
British Airways
1 Mar
PDX11:46Portland
23h 14m
2 stops
INV19:00Inverness
11 Mar
INV10:30Inverness
13h 25m
1 stop
PDX16:55Portland
£367
Find similar

momondo Fare Finder

 
Customise your flight search to find flights from Portland to United Kingdom that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 279,928 searches. Data last updated 26 december 2025.
Use the filters below to find and compare flights from Portland to the United Kingdom that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

PortlandInverness

PDX - INV

PDXINV

Portland

sön 1/3

17:45-19:00

1 stop17h 15m

Inverness

ons 11/3

10:30-16:55

1 stop13h 25m

£352

PortlandInverness

PDX - INV

PDXINV

Portland

sön 1/3

12:02-19:00

2 stops22h 58m

Inverness

ons 11/3

10:30-16:55

1 stop13h 25m

£366

PortlandInverness

PDX - INV

PDXINV

Portland

mån 6/4

06:40-10:15

2 stops19h 35m

Inverness

tors 16/4

10:20-17:40

1 stop15h 20m

£373

PortlandInverness

PDX - INV

PDXINV

Portland

mån 6/4

06:40-10:15

2 stops19h 35m

Inverness

tors 16/4

10:20-17:40

1 stop15h 20m

£374

PortlandInverness

PDX - INV

PDXINV

Portland

sön 1/3

13:51-19:00

2 stops21h 09m

Inverness

ons 11/3

10:30-11:07

2 stops31h 37m

£379

PortlandInverness

PDX - INV

PDXINV

Portland

mån 6/4

11:46-15:00

2 stops19h 14m

Inverness

tors 16/4

10:20-23:37

2 stops21h 17m

£380

PortlandGlasgow

PDX - GLA

PDXGLA

Portland

ons 25/2

13:25-16:35

1 stop19h 10m

Glasgow Intl

tors 5/3

17:20-11:25

1 stop26h 05m

£458

PortlandManchester

PDX - MAN

PDXMAN

Portland

mån 20/4

15:30-11:40

1 stop12h 10m

Manchester

mån 27/4

13:05-18:00

1 stop12h 55m

£458

PortlandLondon

PDX - LGW

PDXLGW

Portland

lör 9/5

15:30-14:40

1 stop15h 10m

London Gatwick

fre 22/5

15:40-11:45

1 stop28h 05m

£477

PortlandLondon

PDX - LCY

PDXLCY

Portland

ons 28/1

13:25-19:35

1 stop22h 10m

London City

tis 3/2

20:05-11:25

1 stop23h 20m

£482

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to the United Kingdom from

How to get the cheapest flight ticket from Portland to United Kingdom

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to United Kingdom?

The cheapest month to fly to United Kingdom from Portland is in October. Flight prices, which tend to average around £477, are often lower during this time because this is during the off-season. If you are unable to visit United Kingdom during the month of October, then departing from Portland during the month November is also very affordable. Most momondo users find prices during this month for around £488.

What is the cheapest day to depart on your flight to United Kingdom?

The cheapest day to depart from Portland to United Kingdom is on a Friday. Travellers who choose to depart for United Kingdom on a Friday will often find tickets for as low as £455. When flying out on a Thursday, the most expensive travel day of the week, you can expect to see flight prices from Portland to United Kingdom for around £550.

What is the cheapest time of day to depart on your flight to United Kingdom?

The cheapest time of day to fly to United Kingdom is in the evening when flights can be purchased for as low as £510. Try not to purchase tickets at midday because they tend to be around £686. Of course, these prices can vary depending on the time of year and what airport you fly to.

What is the cheapest Portland to United Kingdom flight route?

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

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

You are more likely to see cheaper flights to United Kingdom from Portland when booking weeks ahead of your departure date. In general, you can expect to find flights to United Kingdom for around £618 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to United Kingdom from Portland for as low as £551 on momondo.

What cabin class options are available on Portland to United Kingdom flights?

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

Can stopping save me money on Portland to United Kingdom flights?

You could potentially save up to 27% on your flight if you consider stops on a Portland to United Kingdom flight.

Cheap Portland to United Kingdom flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Portland to United Kingdom

Best price found

£3,151

Fastest flight time

9h 30m

Direct flights

Every day

Airports in United Kingdom

1,286 airports
The best one-way flight to United Kingdom from Portland in the past 72 hours is £3,151. The best return flight deal from Portland to United Kingdom found on momondo in the last 72 hours is £1,352.
The fastest flight from Portland to United Kingdom takes 9h 30m
Direct flights go from Portland to United Kingdom every day.
There are 1,286 airports in United Kingdom. From Portland there are direct flights to London Heathrow (LHR).
Search flight deals

  • When did momondo last update prices for flights from Portland Airport to United Kingdom?

    Prices for flights from Portland Airport to United Kingdom are updated daily.

  • How many operators does momondo search for flights from Portland Airport to United Kingdom?

  • How old do you have to be to fly from Portland Airport to United Kingdom?

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Portland Airport to United Kingdom.

  • What documentation or ID do you need to fly to United Kingdom?

    The travel and health documents you'll need for your trip to United Kingdom may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at United Kingdom. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

  • What is the most popular plane model from Portland to United Kingdom?

Best airlines flying from Portland to United Kingdom

Compare and see reviews for airlines that fly from Portland to United Kingdom with momondo
Airline
Rating
Free Cancellation
Price
British AirwaysPriceFrom £381Free CancellationRating
6.7
7,617 reviews
Search British Airways flights
IberiaPriceFrom £429Free CancellationRating
7.0
3,058 reviews
Search Iberia flights
IcelandairPriceFrom £436Free CancellationRating
7.0
592 reviews
Search Icelandair flights

Why use momondo?

Why should I use momondo to find a flight deal from Portland to United Kingdom?

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Portland to United Kingdom . Millions of users trust and use momondo every year so you are in good hands.

Can I find flights from Portland to United Kingdom with flexible booking policies on momondo?

All flight searches from Portland to United Kingdom on momondo can be filtered to show those which offer flexible booking policies.

How can momondo help me find flights from Portland to United Kingdom?

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Portland to United Kingdom.

I’m not ready to book a flight from Portland to United Kingdom right now. Can momondo alert me if prices change?

Of course. momondo tracks the price of Portland to United Kingdom flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

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Find better results for your trip to the United Kingdom

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