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Cheap flights from Portland to London from $279

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 7/19. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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0 bags

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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 - 9:15 pm
PDX
-
LTN
21h 45m
2 stops
Multiple Airlines Logo
9:00 am - 1:50 pm
LTN
-
PDX
36h 50m
3 stops
$938Multiple Airlines
Wed, Sep 30 - Sat, Oct 10
Multiple Airlines Logo
10:10 am - 3:30 pm
PDX
-
LTN
21h 20m
2 stops
Multiple Airlines Logo
9:40 am - 1:50 pm
LTN
-
PDX
36h 10m
3 stops
$939Multiple Airlines
Tue, Sep 8 - Tue, Sep 22
Multiple Airlines Logo
10:10 am - 1:25 pm
PDX
-
LTN
19h 15m
2 stops
Multiple Airlines Logo
9:40 am - 1:50 pm
LTN
-
PDX
36h 10m
3 stops
$941Multiple Airlines
Tue, Sep 22 - Tue, Sep 29
Multiple Airlines Logo
10:10 am - 1:25 pm
PDX
-
LTN
19h 15m
2 stops
Multiple Airlines Logo
9:40 pm - 2:51 pm
LTN
-
PDX
25h 11m
2 stops
$946Multiple Airlines
Tue, Aug 11 - Thu, Aug 20
Multiple Airlines Logo
3:30 pm - 9:00 pm
PDX
-
LTN
21h 30m
2 stops
Multiple Airlines Logo
4:30 pm - 5:55 pm
LTN
-
PDX
33h 25m
3 stops
$950Multiple Airlines
Sat, Aug 15 - Tue, Aug 25
Multiple Airlines Logo
10:10 am - 1:25 pm
PDX
-
LTN
19h 15m
2 stops
Multiple Airlines Logo
9:40 am - 1:50 pm
LTN
-
PDX
36h 10m
3 stops
$951Multiple Airlines
Tue, Sep 15 - Tue, Sep 22
Multiple Airlines Logo
3:30 pm - 11:25 pm
PDX
-
LTN
23h 55m
2 stops
Multiple Airlines Logo
6:05 am - 5:55 pm
LTN
-
PDX
43h 50m
3 stops
$969Multiple Airlines
Thu, Sep 10 - Mon, Sep 28
Multiple Airlines Logo
2:45 pm - 2:00 pm
PDX
-
LTN
15h 15m
1 stop
Multiple Airlines Logo
6:00 am - 5:00 pm
LTN
-
PDX
19h 00m
1 stop
$975Multiple Airlines
Mon, Nov 2 - Sun, Nov 15
Multiple Airlines Logo
3:30 pm - 10:50 pm
PDX
-
LTN
23h 20m
2 stops
Multiple Airlines Logo
6:25 am - 5:55 pm
LTN
-
PDX
19h 30m
1 stop
$980Multiple Airlines
Mon, Sep 21 - Sun, Oct 4
Multiple Airlines Logo
3:30 pm - 10:50 pm
PDX
-
LTN
23h 20m
2 stops
Multiple Airlines Logo
6:25 am - 5:55 pm
LTN
-
PDX
19h 30m
1 stop
$982Multiple Airlines
Mon, Sep 21 - Sun, Oct 4

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 May 23, 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

Wed 9/30

3:30 pm-9:15 pm

2 stops21h 45m

London Luton

Sat 10/10

9:00 am-1:50 pm

3 stops36h 50m

$938

PortlandLondon

PDX - LTN

PDXLTN

Portland

Tue 9/8

10:10 am-3:30 pm

2 stops21h 20m

London Luton

Tue 9/22

9:40 am-1:50 pm

3 stops36h 10m

$939

PortlandLondon

PDX - LTN

PDXLTN

Portland

Tue 9/22

10:10 am-1:25 pm

2 stops19h 15m

London Luton

Tue 9/29

9:40 am-1:50 pm

3 stops36h 10m

$941

PortlandLondon

PDX - LTN

PDXLTN

Portland

Tue 8/11

10:10 am-1:25 pm

2 stops19h 15m

London Luton

Thu 8/20

9:40 pm-2:51 pm

2 stops25h 11m

$946

PortlandLondon

PDX - LTN

PDXLTN

Portland

Sat 8/15

3:30 pm-9:00 pm

2 stops21h 30m

London Luton

Tue 8/25

4:30 pm-5:55 pm

3 stops33h 25m

$950

PortlandLondon

PDX - LTN

PDXLTN

Portland

Tue 9/15

10:10 am-1:25 pm

2 stops19h 15m

London Luton

Tue 9/22

9:40 am-1:50 pm

3 stops36h 10m

$951

PortlandLondon

PDX - LTN

PDXLTN

Portland

Thu 9/10

3:30 pm-11:25 pm

2 stops23h 55m

London Luton

Mon 9/28

6:05 am-5:55 pm

3 stops43h 50m

$969
Quickest round-trip

PortlandLondon

PDX - LTN

PDXLTN

Portland

Mon 11/2

2:45 pm-2:00 pm

1 stop15h 15m

London Luton

Sun 11/15

6:00 am-5:00 pm

1 stop19h 00m

$975

PortlandLondon

PDX - LTN

PDXLTN

Portland

Mon 9/21

3:30 pm-10:50 pm

2 stops23h 20m

London Luton

Sun 10/4

6:25 am-5:55 pm

1 stop19h 30m

$980

PortlandLondon

PDX - LTN

PDXLTN

Portland

Mon 9/21

3:30 pm-10:50 pm

2 stops23h 20m

London Luton

Sun 10/4

6:25 am-5:55 pm

1 stop19h 30m

$982

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
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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

13h 25m

Direct flights

None
The fastest flight from Portland to London Luton Airport takes 13h 25m
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. 13h 25m 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
Dover
Luton
Hayes
Crawley
Wembley
Slough
Croydon
Stansted
Watford
Harrow
Brentwood
Dartford
Ilford
Cobham
Folkestone
Uxbridge
Romford

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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