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Cheap flights from Portland to London from $287

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 London departing on 10/5. 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
1 adult, Economy, 0 bags

Find the cheapest flights from Portland to London

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
3:30 pm - 9:00 pm
PDX
-
LTN
21h 30m
2 stops
Multiple Airlines Logo
8:50 pm - 1:10 pm
LTN
-
PDX
24h 20m
2 stops
$881Multiple Airlines
Sat, Aug 22 - Sun, Aug 30
Multiple Airlines Logo
3:30 pm - 1:05 pm
PDX
-
LTN
13h 35m
1 stop
Multiple Airlines Logo
8:00 am - 6:00 pm
LTN
-
PDX
17h 00m
1 stop
$884Multiple Airlines
Sat, Oct 17 - Mon, Oct 26
Multiple Airlines Logo
3:30 pm - 11:00 pm
PDX
-
LTN
23h 30m
3 stops
Multiple Airlines Logo
5:00 pm - 6:31 pm
LTN
-
PDX
32h 31m
3 stops
$887Multiple Airlines
Mon, Oct 19 - Wed, Oct 28
Multiple Airlines Logo
3:30 pm - 11:00 pm
PDX
-
LTN
23h 30m
3 stops
Multiple Airlines Logo
5:30 pm - 2:51 pm
LTN
-
PDX
29h 21m
3 stops
$908Multiple Airlines
Thu, Oct 15 - Thu, Oct 22
Multiple Airlines Logo
3:30 pm - 11:25 pm
PDX
-
LTN
23h 55m
2 stops
Multiple Airlines Logo
6:10 am - 9:31 am
LTN
-
PDX
35h 21m
3 stops
$909Multiple Airlines
Thu, Oct 8 - Wed, Oct 14
Multiple Airlines Logo
10:10 am - 7:55 pm
PDX
-
LTN
25h 45m
3 stops
Multiple Airlines Logo
8:35 pm - 7:06 pm
LTN
-
PDX
30h 31m
3 stops
$930Multiple Airlines
Sun, Oct 11 - Sat, Oct 17
Multiple Airlines Logo
3:30 pm - 11:10 pm
PDX
-
LTN
23h 40m
3 stops
Multiple Airlines Logo
6:05 am - 9:31 am
LTN
-
PDX
35h 26m
3 stops
$931Multiple Airlines
Thu, Oct 15 - Thu, Oct 22
Multiple Airlines Logo
3:30 pm - 11:25 pm
PDX
-
LTN
23h 55m
2 stops
Multiple Airlines Logo
6:15 am - 5:55 pm
LTN
-
PDX
19h 40m
1 stop
$933Multiple Airlines
Thu, Oct 8 - Wed, Oct 14
Multiple Airlines Logo
3:30 pm - 10:50 pm
PDX
-
LTN
23h 20m
2 stops
Multiple Airlines Logo
6:15 am - 5:55 pm
LTN
-
PDX
19h 40m
1 stop
$934Multiple Airlines
Mon, Sep 21 - Wed, Sep 30
Multiple Airlines Logo
3:30 pm - 11:25 pm
PDX
-
LTN
23h 55m
2 stops
Multiple Airlines Logo
9:40 pm - 9:31 am
LTN
-
PDX
43h 51m
3 stops
$939Multiple Airlines
Thu, Sep 10 - Thu, Sep 17

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momondo Fare Finder

 
Customize your flight search to find flights from Portland to London Luton Airport 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 832,500 searches. Data last updated July 11, 2026.
Use the filters below to find and compare flights from Portland to London Luton Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

PortlandLondon

PDX - LTN

PDXLTN

Portland

Sat 8/22

3:30 pm-9:00 pm

2 stops21h 30m

London Luton

Sun 8/30

8:50 pm-1:10 pm

2 stops24h 20m

$881
Quickest round-trip

PortlandLondon

PDX - LTN

PDXLTN

Portland

Sat 10/17

3:30 pm-1:05 pm

1 stop13h 35m

London Luton

Mon 10/26

8:00 am-6:00 pm

1 stop17h 00m

$884

PortlandLondon

PDX - LTN

PDXLTN

Portland

Mon 10/19

3:30 pm-11:00 pm

3 stops23h 30m

London Luton

Wed 10/28

5:00 pm-6:31 pm

3 stops32h 31m

$887

PortlandLondon

PDX - LTN

PDXLTN

Portland

Thu 10/15

3:30 pm-11:00 pm

3 stops23h 30m

London Luton

Thu 10/22

5:30 pm-2:51 pm

3 stops29h 21m

$908

PortlandLondon

PDX - LTN

PDXLTN

Portland

Thu 10/8

3:30 pm-11:25 pm

2 stops23h 55m

London Luton

Wed 10/14

6:10 am-9:31 am

3 stops35h 21m

$909

PortlandLondon

PDX - LTN

PDXLTN

Portland

Sun 10/11

10:10 am-7:55 pm

3 stops25h 45m

London Luton

Sat 10/17

8:35 pm-7:06 pm

3 stops30h 31m

$930

PortlandLondon

PDX - LTN

PDXLTN

Portland

Thu 10/15

3:30 pm-11:10 pm

3 stops23h 40m

London Luton

Thu 10/22

6:05 am-9:31 am

3 stops35h 26m

$931

PortlandLondon

PDX - LTN

PDXLTN

Portland

Thu 10/8

3:30 pm-11:25 pm

2 stops23h 55m

London Luton

Wed 10/14

6:15 am-5:55 pm

1 stop19h 40m

$933

PortlandLondon

PDX - LTN

PDXLTN

Portland

Mon 9/21

3:30 pm-10:50 pm

2 stops23h 20m

London Luton

Wed 9/30

6:15 am-5:55 pm

1 stop19h 40m

$934

PortlandLondon

PDX - LTN

PDXLTN

Portland

Thu 9/10

3:30 pm-11:25 pm

2 stops23h 55m

London Luton

Thu 9/17

9:40 pm-9:31 am

3 stops43h 51m

$939

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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When to book flights from Portland to London Luton Airport

Are you open to changing your travel dates? Check out the ideal times to fly from Portland to London Luton Airport according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Portland to London Luton Airport (PDX to LTN) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Portland to London Luton Airport

Fastest flight time

16h 20m

Direct flights

None
The fastest flight from Portland to London Luton Airport takes 16h 20m
There are no direct flights from Portland to London Luton Airport. There are no popular flight routes from Portland to London Luton Airport.
Search flight deals

Frequently asked questions about flying from Portland to London Luton Airport

  • How far is Portland to London Luton by plane?

    There are 4883.1 mi between Portland and London Luton. 16h 20m is a normal flight duration for this route.

  • When did momondo last update prices for flights from Portland Airport to London Luton Airport?

    Prices for flights from Portland Airport to London Luton Airport are refreshed on a daily basis.

  • How old do you have to be to fly from Portland Airport to London Luton Airport?

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Portland Airport to London Luton Airport.

  • What documentation or ID do you need to fly to London Luton Airport?

    The required travel and health documents for your London Luton Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at London Luton Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

Frequently asked questions about flying from Portland to London Luton Airport

  • How do I get Price Alerts for flights from Portland to London Luton Airport?

    Price Alerts will notify you by email when the price for flights to London Luton Airport from Portland decreases. To activate this, select your desired travel dates and search for offers. While browsing through offers you’ll see the Price Alert widget toggle. Click it to turn on notifications.

  • How can I save money on flights from Portland to London Luton Airport with momondo?

    Leverage our AI within our “Price Forecast” tool, which predicts if it’s better to book now or wait until prices decrease. You can strategically pick the best days to fly and save money on your trip by using our “Price Calendar” tool. “Explore” shows an overview of how much it costs to fly to anywhere from a selected city or airport. Our “Discover” content is a great option for travel inspiration and money-saving tips, while “Price Alerts” will update you when prices change, so you can book when fares are right.

  • How does momondo find its flight prices?

    We aggregate our prices from over 700+ competitors from airlines to OTAs. We operate in over 30 markets worldwide to show you a wide range of travel options.

Traveling to a place near London?

Book flights to London if you plan to visit one of these locations
Hounslow
Gatwick
Milton Keynes
Luton
Hayes
Dover
Crawley
Wembley
Croydon
Stansted
Harrow
Slough
Watford
Brentwood
Ilford
Cobham
Folkestone
Guildford
Romford
Uxbridge

Why use momondo?

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

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

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

Yes. All flights to London from Portland on momondo can be compared and filtered by various policies on offer, including flexible booking.

How can momondo help me find flights from Portland to London?

Once all potential Portland to London flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

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

Yes momondo offers price alerts on flights to London from Portland. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

An easier way to manage your London Luton Airport trip

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