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Cheap flights from Portland to the United Kingdom from £161

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 20/4. 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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Cheap return flights

Enter your travel dates to find the best prices.
KLM Logo
13:05 - 22:30
PDX
-
INV
25h 25m
1 stop
KLM Logo
06:25 - 11:10
INV
-
PDX
12h 45m
1 stop
£432KLM
Tue, 31 Mar - Thu, 9 Apr
Delta Logo
13:05 - 12:45
PDX
-
INV
15h 40m
1 stop
Delta Logo
06:25 - 11:10
INV
-
PDX
12h 45m
1 stop
£433Delta
Tue, 31 Mar - Thu, 9 Apr
Multiple Airlines Logo
12:31 - 14:55
PDX
-
INV
18h 24m
2 stops
Multiple Airlines Logo
10:35 - 22:50
INV
-
PDX
20h 15m
2 stops
£433Multiple Airlines
Wed, 2 Sep - Wed, 23 Sep
Icelandair Logo
15:30 - 13:25
PDX
-
GLA
13h 55m
1 stop
Icelandair Logo
14:20 - 17:55
GLA
-
PDX
11h 35m
1 stop
£436Icelandair
Thu, 6 Aug - Wed, 19 Aug
Air France Logo
09:59 - 12:45
PDX
-
INV
18h 46m
2 stops
Air France Logo
06:25 - 11:10
INV
-
PDX
12h 45m
1 stop
£436Air France
Tue, 31 Mar - Thu, 9 Apr
Multiple Airlines Logo
09:59 - 12:45
PDX
-
INV
18h 46m
2 stops
Multiple Airlines Logo
06:25 - 20:25
INV
-
PDX
22h 00m
2 stops
£442Multiple Airlines
Tue, 31 Mar - Thu, 9 Apr
Icelandair Logo
15:30 - 13:25
PDX
-
GLA
13h 55m
1 stop
Icelandair Logo
14:20 - 17:55
GLA
-
PDX
11h 35m
1 stop
£449Icelandair
Sat, 8 Aug - Wed, 19 Aug
Virgin Atlantic Logo
13:05 - 17:20
PDX
-
LCY
20h 15m
1 stop
Virgin Atlantic Logo
10:00 - 11:10
LCY
-
PDX
33h 10m
1 stop
£522Virgin Atlantic
Mon, 30 Mar - Wed, 15 Apr
Virgin Atlantic Logo
13:05 - 09:30
PDX
-
LCY
12h 25m
1 stop
Virgin Atlantic Logo
17:50 - 11:10
LCY
-
PDX
25h 20m
1 stop
£533Virgin Atlantic
Wed, 8 Apr - Tue, 14 Apr
British Airways Logo
05:38 - 15:10
PDX
-
MAN
25h 32m
2 stops
British Airways Logo
07:45 - 00:58
MAN
-
PDX
25h 13m
2 stops
£557British Airways
Mon, 24 Aug - Thu, 3 Sep

Icelandair flights from Portland to United Kingdom

Our best Icelandair deals on Portland to United Kingdom flight tickets
Icelandair
21 Aug
PDX19:05Portland
32h 50m
1 stop
LHR11:55London Heathrow
28 Aug
LHR21:25London Heathrow
22h 20m
1 stop
PDX11:45Portland
£453
Icelandair
1 Aug
PDX15:30Portland
12h 25m
1 stop
LHR11:55London Heathrow
19 Aug
LHR21:25London Heathrow
22h 20m
1 stop
PDX11:45Portland
£454
Icelandair
14 Apr
PDX15:30Portland
12h 25m
1 stop
LHR11:55London Heathrow
28 Apr
LHR21:25London Heathrow
28h 35m
1 stop
PDX18:00Portland
£459

Air Canada flights from Portland to United Kingdom

Our best Air Canada deals on Portland to United Kingdom flight tickets
Air Canada
3 Sept
PDX15:25Portland
55h 05m
2 stops
MAN06:30Manchester
13 Sept
MAN09:00Manchester
47h 47m
2 stops
PDX00:47Portland
£605
Air Canada
10 Mar
PDX05:30Portland
21h 40m
2 stops
LHR10:10London Heathrow
17 Mar
LHR18:00London Heathrow
35h 45m
2 stops
PDX22:45Portland
£635
Air Canada
9 Mar
PDX19:05Portland
32h 05m
2 stops
LHR10:10London Heathrow
17 Mar
LHR13:25London Heathrow
32h 15m
2 stops
PDX14:40Portland
£638

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 8 March 2026.
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

Cheapest return flight

PortlandInverness

PDX - INV

PDXINV

Portland

Tue 31/3

13:05-22:30

1 stop25h 25m

Inverness

Thu 9/4

06:25-11:10

1 stop12h 45m

£432

PortlandInverness

PDX - INV

PDXINV

Portland

Tue 31/3

13:05-12:45

1 stop15h 40m

Inverness

Thu 9/4

06:25-11:10

1 stop12h 45m

£433

PortlandInverness

PDX - INV

PDXINV

Portland

Wed 2/9

12:31-14:55

2 stops18h 24m

Inverness

Wed 23/9

10:35-22:50

2 stops20h 15m

£433
Fastest return journey

PortlandGlasgow

PDX - GLA

PDXGLA

Portland

Thu 6/8

15:30-13:25

1 stop13h 55m

Glasgow Intl

Wed 19/8

14:20-17:55

1 stop11h 35m

£436

PortlandInverness

PDX - INV

PDXINV

Portland

Tue 31/3

09:59-12:45

2 stops18h 46m

Inverness

Thu 9/4

06:25-11:10

1 stop12h 45m

£436

PortlandInverness

PDX - INV

PDXINV

Portland

Tue 31/3

09:59-12:45

2 stops18h 46m

Inverness

Thu 9/4

06:25-20:25

2 stops22h 00m

£442

PortlandGlasgow

PDX - GLA

PDXGLA

Portland

Sat 8/8

15:30-13:25

1 stop13h 55m

Glasgow Intl

Wed 19/8

14:20-17:55

1 stop11h 35m

£449

PortlandLondon

PDX - LCY

PDXLCY

Portland

Mon 30/3

13:05-17:20

1 stop20h 15m

London City

Wed 15/4

10:00-11:10

1 stop33h 10m

£522

PortlandLondon

PDX - LCY

PDXLCY

Portland

Wed 8/4

13:05-09:30

1 stop12h 25m

London City

Tue 14/4

17:50-11:10

1 stop25h 20m

£533

PortlandManchester

PDX - MAN

PDXMAN

Portland

Mon 24/8

05:38-15:10

2 stops25h 32m

Manchester

Thu 3/9

07:45-00:58

2 stops25h 13m

£557

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 £481, 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 £491.

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 £502. 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 £583.

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 afternoon when flights can be purchased for as low as £516. Try not to purchase tickets in the evening because they tend to be around £539. 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 £623 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 £556 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 50% 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

£276

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 £276. The best return flight deal from Portland to United Kingdom found on momondo in the last 72 hours is £493.
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
IcelandairPriceFrom £440Free CancellationRating
7.1
618 reviews
Search Icelandair flights
British AirwaysPriceFrom £442Free CancellationRating
6.7
7,779 reviews
Search British Airways 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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Popular flights according to clicks in the last 7 days on momondo
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