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Cheap flights from Philadelphia to London from $373

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Philadelphia to London departing on 11/23. 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 Philadelphia to London

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
3:25 pm - 8:10 pm
PHL
-
LTN
23h 45m
2 stops
Multiple Airlines Logo
9:35 pm - 9:34 pm
LTN
-
PHL
28h 59m
2 stops
$865Multiple Airlines
Tue, Aug 18 - Mon, Aug 24
Multiple Airlines Logo
10:05 am - 3:45 pm
PHL
-
LTN
24h 40m
2 stops
Multiple Airlines Logo
6:15 am - 4:05 pm
LTN
-
PHL
14h 50m
2 stops
$866Multiple Airlines
Mon, Aug 3 - Wed, Aug 12
Multiple Airlines Logo
3:25 pm - 12:45 pm
PHL
-
LTN
16h 20m
2 stops
Multiple Airlines Logo
6:15 am - 3:41 pm
LTN
-
PHL
14h 26m
2 stops
$870Multiple Airlines
Mon, Aug 3 - Wed, Aug 12
Multiple Airlines Logo
8:25 pm - 12:45 pm
PHL
-
LTN
11h 20m
1 stop
Multiple Airlines Logo
6:15 am - 6:55 pm
LTN
-
PHL
17h 40m
1 stop
$871Multiple Airlines
Mon, Aug 3 - Wed, Aug 12
Multiple Airlines Logo
8:25 pm - 3:45 pm
PHL
-
LTN
14h 20m
1 stop
Multiple Airlines Logo
1:00 pm - 6:55 pm
LTN
-
PHL
10h 55m
1 stop
$876Multiple Airlines
Mon, Aug 10 - Thu, Aug 13
Multiple Airlines Logo
3:25 pm - 3:45 pm
PHL
-
LTN
19h 20m
2 stops
Multiple Airlines Logo
6:15 am - 3:41 pm
LTN
-
PHL
14h 26m
2 stops
$877Multiple Airlines
Mon, Aug 3 - Wed, Aug 12
Multiple Airlines Logo
8:25 pm - 12:35 pm
PHL
-
LTN
11h 10m
1 stop
Multiple Airlines Logo
11:00 am - 6:55 pm
LTN
-
PHL
12h 55m
1 stop
$883Multiple Airlines
Wed, Sep 9 - Sun, Sep 13
Multiple Airlines Logo
8:25 pm - 3:45 pm
PHL
-
LTN
14h 20m
1 stop
Multiple Airlines Logo
6:15 am - 6:55 pm
LTN
-
PHL
17h 40m
1 stop
$885Multiple Airlines
Mon, Jul 13 - Wed, Jul 29
Multiple Airlines Logo
8:25 pm - 1:25 pm
PHL
-
LTN
12h 00m
1 stop
Multiple Airlines Logo
9:40 am - 6:55 pm
LTN
-
PHL
14h 15m
1 stop
$889Multiple Airlines
Tue, Aug 4 - Tue, Aug 11
Multiple Airlines Logo
10:05 am - 3:25 pm
PHL
-
LTN
24h 20m
2 stops
Multiple Airlines Logo
9:40 pm - 3:41 pm
LTN
-
PHL
23h 01m
2 stops
$891Multiple Airlines
Wed, Jul 15 - Thu, Jul 23

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Customize your flight search to find flights from Philadelphia 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 June 13, 2026.
Use the filters below to find and compare flights from Philadelphia to London Luton Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

PhiladelphiaLondon

PHL - LTN

PHLLTN

Philadelphia

Tue 8/18

3:25 pm-8:10 pm

2 stops23h 45m

London Luton

Mon 8/24

9:35 pm-9:34 pm

2 stops28h 59m

$865

PhiladelphiaLondon

PHL - LTN

PHLLTN

Philadelphia

Mon 8/3

10:05 am-3:45 pm

2 stops24h 40m

London Luton

Wed 8/12

6:15 am-4:05 pm

2 stops14h 50m

$866

PhiladelphiaLondon

PHL - LTN

PHLLTN

Philadelphia

Mon 8/3

3:25 pm-12:45 pm

2 stops16h 20m

London Luton

Wed 8/12

6:15 am-3:41 pm

2 stops14h 26m

$870

PhiladelphiaLondon

PHL - LTN

PHLLTN

Philadelphia

Mon 8/3

8:25 pm-12:45 pm

1 stop11h 20m

London Luton

Wed 8/12

6:15 am-6:55 pm

1 stop17h 40m

$871

PhiladelphiaLondon

PHL - LTN

PHLLTN

Philadelphia

Mon 8/10

8:25 pm-3:45 pm

1 stop14h 20m

London Luton

Thu 8/13

1:00 pm-6:55 pm

1 stop10h 55m

$876

PhiladelphiaLondon

PHL - LTN

PHLLTN

Philadelphia

Mon 8/3

3:25 pm-3:45 pm

2 stops19h 20m

London Luton

Wed 8/12

6:15 am-3:41 pm

2 stops14h 26m

$877
Quickest round-trip

PhiladelphiaLondon

PHL - LTN

PHLLTN

Philadelphia

Wed 9/9

8:25 pm-12:35 pm

1 stop11h 10m

London Luton

Sun 9/13

11:00 am-6:55 pm

1 stop12h 55m

$883

PhiladelphiaLondon

PHL - LTN

PHLLTN

Philadelphia

Mon 7/13

8:25 pm-3:45 pm

1 stop14h 20m

London Luton

Wed 7/29

6:15 am-6:55 pm

1 stop17h 40m

$885

PhiladelphiaLondon

PHL - LTN

PHLLTN

Philadelphia

Tue 8/4

8:25 pm-1:25 pm

1 stop12h 00m

London Luton

Tue 8/11

9:40 am-6:55 pm

1 stop14h 15m

$889

PhiladelphiaLondon

PHL - LTN

PHLLTN

Philadelphia

Wed 7/15

10:05 am-3:25 pm

2 stops24h 20m

London Luton

Thu 7/23

9:40 pm-3:41 pm

2 stops23h 01m

$891

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 Philadelphia to London Luton Airport

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

Cheap Philadelphia to London Luton Airport (PHL to LTN) flight deals and tips

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

Fastest flight time

10h 00m

Direct flights

None
The fastest flight from Philadelphia to London Luton Airport takes 10h 00m
There are no direct flights from Philadelphia to London Luton Airport. There are no popular flight routes from Philadelphia to London Luton Airport.
Search flight deals

Frequently asked questions about flying from Philadelphia to London Luton Airport

  • How far is Philadelphia to London Luton by plane?

    A flight from Philadelphia to London Luton will travel around 3521.0 mi. A reasonable flight in good conditions will take 10h 00m.

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

    Prices for flights from Philadelphia Airport to London Luton Airport refresh daily.

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

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Philadelphia Airport to London Luton Airport.

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

    The travel and health documents required for your trip to London Luton Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at London Luton Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

Frequently asked questions about flying from Philadelphia to London Luton Airport

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

    You can take advantage of momondo’s Price Alerts by first searching for your flights to Philadelphia from London Luton Airport. Flight offers will be shown to you in real-time. From there you can create a Price Alert by using our on-site widget.

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

    With “Price Forecast”, learn how soon you should book your flight in advance. Down to the day of week and time of day, our information can inform you on the ideal time to book to save on your travel. Our “Price Calendar” shows you at a quick glance when to book your travel for lower rates. By setting “Price Alerts” you can monitor changes in price and target the ideal time to book. Search for your trip destination by budget amount via our “Explore” feature. Whether you’re looking for ideas for your next travel adventure or cost-cutting tips, our “Discover” content is a great place to start.

  • How does momondo find its flight prices?

    momondo shows deals across 700+ competitors all at once. momondo is active in 30 international markets, so you can have access to a wide range of options from airlines and OTAs alike.

Traveling to a place near London?

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

Why use momondo?

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

It is quick and easy to find Philadelphia to London flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to London that suits you.

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

Yes. momondo allows you to filter the results for Philadelphia to London flights to just show those with flexible booking policies.

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

momondo helps you find the best flight between Philadelphia and London by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

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

If you are not ready to book a flight from Philadelphia to London now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to London and let you know when they change.

An easier way to manage your London Luton Airport trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
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