Cheap flights from Philadelphia to London from $293

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 3/15. 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 round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
3:30 pm - 8:10 pm
PHL
-
LTN
23h 40m2 stops
Multiple Airlines Logo
8:50 pm - 2:47 pm
LTN
-
PHL
22h 57m3 stops
$615Multiple Airlines
Mon, Jan 12 - Tue, Jan 20
Multiple Airlines Logo
3:30 pm - 8:10 pm
PHL
-
LTN
23h 40m2 stops
Multiple Airlines Logo
8:50 pm - 2:47 pm
LTN
-
PHL
22h 57m3 stops
$635Multiple Airlines
Mon, Jan 12 - Tue, Jan 20
Multiple Airlines Logo
3:30 pm - 9:05 pm
PHL
-
LTN
24h 35m3 stops
Multiple Airlines Logo
9:45 pm - 2:47 pm
LTN
-
PHL
22h 02m3 stops
$638Multiple Airlines
Tue, Jan 13 - Mon, Jan 19
Multiple Airlines Logo
6:30 pm - 8:35 am
PHL
-
LTN
10h 05m1 stop
Multiple Airlines Logo
6:00 am - 5:00 pm
LTN
-
PHL
15h 00m1 stop
$644Multiple Airlines
Mon, Mar 16 - Mon, Mar 23
Multiple Airlines Logo
4:05 pm - 8:10 pm
PHL
-
LTN
23h 05m3 stops
Multiple Airlines Logo
6:00 am - 10:46 pm
LTN
-
PHL
21h 46m2 stops
$659Multiple Airlines
Fri, Feb 13 - Sat, Feb 21
Multiple Airlines Logo
4:35 pm - 3:25 pm
PHL
-
LTN
18h 50m2 stops
Multiple Airlines Logo
9:25 pm - 10:43 pm
LTN
-
PHL
30h 18m2 stops
$686Multiple Airlines
Fri, Mar 27 - Sat, Apr 4
Multiple Airlines Logo
4:05 pm - 1:20 pm
PHL
-
LTN
16h 15m2 stops
Multiple Airlines Logo
9:00 pm - 2:49 pm
LTN
-
PHL
22h 49m2 stops
$687Multiple Airlines
Thu, Feb 26 - Sat, Mar 7
Multiple Airlines Logo
3:30 pm - 8:10 pm
PHL
-
LTN
23h 40m2 stops
Multiple Airlines Logo
8:50 am - 10:46 pm
LTN
-
PHL
18h 56m3 stops
$695Multiple Airlines
Tue, Jan 13 - Tue, Jan 20
Multiple Airlines Logo
3:30 pm - 9:05 pm
PHL
-
LTN
24h 35m3 stops
Multiple Airlines Logo
9:50 pm - 5:05 pm
LTN
-
PHL
23h 15m2 stops
$699Multiple Airlines
Fri, Mar 6 - Sat, Mar 14
Multiple Airlines Logo
3:30 pm - 12:25 pm
PHL
-
LTN
15h 55m2 stops
Multiple Airlines Logo
6:00 am - 4:05 pm
LTN
-
PHL
15h 05m2 stops
$718Multiple Airlines
Tue, Jan 13 - Sun, Jan 18

momondo Fare Finder

 
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 December 18, 2025.
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

PhiladelphiaLondon

PHL - LTN

PHLLTN

Philadelphia

Mon 1/12

3:30 pm-8:10 pm

2 stops23h 40m

London Luton

Tue 1/20

8:50 pm-2:47 pm

3 stops22h 57m

$615

PhiladelphiaLondon

PHL - LTN

PHLLTN

Philadelphia

Mon 1/12

3:30 pm-8:10 pm

2 stops23h 40m

London Luton

Tue 1/20

8:50 pm-2:47 pm

3 stops22h 57m

$635

PhiladelphiaLondon

PHL - LTN

PHLLTN

Philadelphia

Tue 1/13

3:30 pm-9:05 pm

3 stops24h 35m

London Luton

Mon 1/19

9:45 pm-2:47 pm

3 stops22h 02m

$638

PhiladelphiaLondon

PHL - LTN

PHLLTN

Philadelphia

Mon 3/16

6:30 pm-8:35 am

1 stop10h 05m

London Luton

Mon 3/23

6:00 am-5:00 pm

1 stop15h 00m

$644

PhiladelphiaLondon

PHL - LTN

PHLLTN

Philadelphia

Fri 2/13

4:05 pm-8:10 pm

3 stops23h 05m

London Luton

Sat 2/21

6:00 am-10:46 pm

2 stops21h 46m

$659

PhiladelphiaLondon

PHL - LTN

PHLLTN

Philadelphia

Fri 3/27

4:35 pm-3:25 pm

2 stops18h 50m

London Luton

Sat 4/4

9:25 pm-10:43 pm

2 stops30h 18m

$686

PhiladelphiaLondon

PHL - LTN

PHLLTN

Philadelphia

Thu 2/26

4:05 pm-1:20 pm

2 stops16h 15m

London Luton

Sat 3/7

9:00 pm-2:49 pm

2 stops22h 49m

$687

PhiladelphiaLondon

PHL - LTN

PHLLTN

Philadelphia

Tue 1/13

3:30 pm-8:10 pm

2 stops23h 40m

London Luton

Tue 1/20

8:50 am-10:46 pm

3 stops18h 56m

$695

PhiladelphiaLondon

PHL - LTN

PHLLTN

Philadelphia

Fri 3/6

3:30 pm-9:05 pm

3 stops24h 35m

London Luton

Sat 3/14

9:50 pm-5:05 pm

2 stops23h 15m

$699

PhiladelphiaLondon

PHL - LTN

PHLLTN

Philadelphia

Tue 1/13

3:30 pm-12:25 pm

2 stops15h 55m

London Luton

Sun 1/18

6:00 am-4:05 pm

2 stops15h 05m

$718

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 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

9h 05m

Direct flights

None
The fastest flight from Philadelphia to London Luton Airport takes 9h 05m
There are no direct flights from Philadelphia to London Luton Airport. There are no popular flight routes 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 9h 05m.

  • 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.

  • 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
Gatwick
Hounslow
Milton Keynes
Dover
Luton
Slough
Guildford
Hayes
Dartford
Crawley
Brentwood
Wembley
Watford
Ilford
Cobham
Folkestone
Romford
Richmond
Uxbridge
Stansted

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

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1 adult
Sat 1/17
Sat 1/24

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