HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Heathrow

$345+ Cheap flights from Sky Harbor Intl (PHX) to Heathrow (LHR)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 2/28. Fares are subject to change and may not be available on all flights or dates of travel.
PHX — LHR
Sep 10 — Sep 171
Wed 9/10
Wed 9/17
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Sky Harbor Intl to Heathrow with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheapflights Tip: The best prices from Phoenix Sky Harbor Intl to London Heathrow are usually found in February or October, booked 10 days in advance, depart on a Wednesday or Tuesday and return on a Wednesday

Cheap flight deals from Sky Harbor Intl to Heathrow

Discover tips and strategies to find the most affordable flight options for your journey from Sky Harbor Intl (PHX) to Heathrow (LHR). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated September 5, 2025.

Round-trip from

$505
(Mytrip)

One-way from

$345
(Kiwi.com)

Popular in

December

Cheapest in

February

Average price

$768

Good round-trip deal

$603 or less

Good one-way deal

$492 or less
From Phoenix Sky Harbor Intl to London Heathrow
Search Deals
One-way flight from Phoenix Sky Harbor Intl to London Heathrow
Search Deals
Highest demand for flights based on searches. 2% potential increase in price ($27 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($36 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in September 2025
Search Deals
Price to beat on a round-trip flight from Phoenix Sky Harbor Intl to London Heathrow.
Search Deals
Price to beat on a one-way flight from Phoenix Sky Harbor Intl to London Heathrow.
Search Deals

Find flight deals from Sky Harbor Intl to Heathrow

Cheapest flights from Sky Harbor Intl to Heathrow
Explore the most affordable flight options available from Sky Harbor Intl to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 5, 2025.

This Mytrip deal was found by Cheapflights users on 9/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/77:10 amPHX - LHR
2 stops18h 25mAir Canada
Thu 10/236:50 amLHR - PHX
2 stops20h 29mAir Canada
Deal found 9/4$505
This Mytrip deal was found by Cheapflights users on 9/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/107:40 amPHX - LHR
1 stop17h 55mAir Canada
Wed 9/176:50 amLHR - PHX
2 stops20h 29mAir Canada
Deal found 9/3$506
This United Airlines deal was found by Cheapflights users on 9/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/311:34 amPHX - LHR
1 stop12h 56mUnited Airlines
Thu 11/131:25 pmLHR - PHX
2 stops41h 31mUnited Airlines
Deal found 9/4$507
This United deal was found by Cheapflights users on 9/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/74:15 pmPHX - LHR
1 stop31h 25mMultiple Airlines
Thu 10/232:10 pmLHR - PHX
1 stop29h 11mMultiple Airlines
Deal found 9/4$508
This United deal was found by Cheapflights users on 9/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/77:46 pmPHX - LHR
1 stop30h 39mMultiple Airlines
Fri 10/172:10 pmLHR - PHX
1 stop29h 11mMultiple Airlines
Deal found 9/2$509
This United deal was found by Cheapflights users on 9/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/33:30 pmPHX - LHR
1 stop31h 25mMultiple Airlines
Tue 11/112:30 pmLHR - PHX
1 stop34h 07mMultiple Airlines
Deal found 9/3$510
This United Airlines deal was found by Cheapflights users on 9/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/157:10 amPHX - LHR
2 stops22h 10mUnited Airlines
Wed 10/229:00 amLHR - PHX
2 stops20h 57mUnited Airlines
Deal found 9/4$511
This Booking.com deal was found by Cheapflights users on 9/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/38:25 pmPHX - LHR
Nonstop9h 50mBritish Airways
Thu 11/132:20 pmLHR - PHX
Nonstop10h 55mBritish Airways
Deal found 9/4$512
This Booking.com deal was found by Cheapflights users on 9/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/56:00 amPHX - LHR
2 stops20h 00mAir Canada
Tue 10/216:50 amLHR - PHX
2 stops20h 29mAir Canada
Deal found 9/3$513
This KLM deal was found by Cheapflights users on 9/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/231:25 pmPHX - LHR
1 stop12h 25mMultiple Airlines
Tue 9/306:15 amLHR - PHX
1 stop14h 35mMultiple Airlines
Deal found 9/3$514
This Cheapflightsfares deal was found by Cheapflights users on 9/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/17:40 amPHX - LHR
1 stop17h 55mAir Canada
Fri 10/109:30 amLHR - PHX
1 stop17h 49mAir Canada
Deal found 9/3$515
This British Airways deal was found by Cheapflights users on 9/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/78:40 pmPHX - LHR
Nonstop10h 00mBritish Airways
Thu 10/163:40 pmLHR - PHX
Nonstop10h 50mBritish Airways
Deal found 9/4$516

Cheapflights Fare Finder

 
Customize your flight search to find flights from Sky Harbor Intl to Heathrow 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, Cheapflights users made 2,558,603 searches. Data last updated September 5, 2025.
Use the filters below to find and compare flights from Phoenix Sky Harbor Intl Airport to London Heathrow Airport that are best for you.

Fly from

Sky Harbor Intl

Fly to

Heathrow

Route

Depart

Return

Price

PhoenixLondon

PHX - LHR

PHXLHR

Phoenix Sky Harbor Intl

Mon 11/3

11:34 am-7:30 am

1 stop12h 56m

London Heathrow

Thu 11/13

1:25 pm-11:56 pm

2 stops41h 31m

$507

PhoenixLondon

PHX - LHR

PHXLHR

Phoenix Sky Harbor Intl

Sun 2/8

12:28 am-7:10 am

2 stops23h 42m

London Heathrow

Fri 2/20

3:00 pm-6:55 pm

2 stops34h 55m

$507

PhoenixLondon

PHX - LHR

PHXLHR

Phoenix Sky Harbor Intl

Tue 10/7

4:15 pm-7:40 am

1 stop31h 25m

London Heathrow

Thu 10/23

2:10 pm-11:21 am

1 stop29h 11m

$508

PhoenixLondon

PHX - LHR

PHXLHR

Phoenix Sky Harbor Intl

Wed 2/18

6:00 am-1:30 pm

1 stop24h 30m

London Heathrow

Fri 3/6

2:30 pm-5:37 pm

1 stop34h 07m

$508

PhoenixLondon

PHX - LHR

PHXLHR

Phoenix Sky Harbor Intl

Tue 11/11

5:11 pm-7:30 am

1 stop31h 19m

London Heathrow

Tue 11/18

2:30 pm-5:37 pm

1 stop34h 07m

$508

PhoenixLondon

PHX - LHR

PHXLHR

Phoenix Sky Harbor Intl

Mon 11/3

1:25 pm-7:30 am

1 stop35h 05m

London Heathrow

Thu 11/13

2:30 pm-5:37 pm

1 stop34h 07m

$508

PhoenixLondon

PHX - LHR

PHXLHR

Phoenix Sky Harbor Intl

Wed 10/15

7:10 am-1:20 pm

2 stops22h 10m

London Heathrow

Fri 10/24

4:00 pm-2:52 pm

2 stops30h 52m

$509

PhoenixLondon

PHX - LHR

PHXLHR

Phoenix Sky Harbor Intl

Mon 1/5

2:25 pm-1:30 pm

1 stop16h 05m

London Heathrow

Fri 1/30

1:25 pm-10:59 pm

2 stops40h 34m

$509

PhoenixLondon

PHX - LHR

PHXLHR

Phoenix Sky Harbor Intl

Tue 10/7

7:46 pm-10:25 am

1 stop30h 39m

London Heathrow

Fri 10/17

2:10 pm-11:21 am

1 stop29h 11m

$509

PhoenixLondon

PHX - LHR

PHXLHR

Phoenix Sky Harbor Intl

Sun 10/5

6:45 pm-9:40 am

1 stop30h 55m

London Heathrow

Tue 10/21

2:10 pm-11:21 am

1 stop29h 11m

$510

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/3

Showing 1-10 of 22 results
1
2
3

The best insider tips for Phoenix Sky Harbor Intl Airport to London Heathrow Airport flights

Snippets provided in this section are AI-generated based on a summarization of Cheapflights-commissioned articles. The articles are presented as-is, for general informational purposes only, and may not be up-to-date. The opinions contained in the articles are original to the author and reflect their authentic experience, which may vary significantly from the experience of others.
Cheapflights partnered with top experts to bring you the best recommendations for your Phoenix Sky Harbor Intl Airport to London Heathrow Airport trip
Airports
PHX

PHX offers short security lines, usually under 10 minutes, with live wait times displayed online for Terminal 4 checkpoints.

Read more about PHXby Brandon Schultz
LHR

Take the Heathrow Express for the fastest route to central London, reaching Paddington Station quickly from LHR.

Read more about LHRby Ramsey Qubein
Our travel experts
Brandon Schultz

Brandon Schultz

Expert on PHX

Brandon Schultz

Brandon Schultz

Brandon Schultz is an award-winning food and travel writer based in New York City. His work has appeared in Forbes, AAA, Thrillist, Travel + Leisure, and The Daily Meal, among many others, and he is the author of 6 books, including 3 cookbooks.

Read more
Ramsey Qubein

Ramsey Qubein

Expert on LHR

Ramsey Qubein

Ramsey Qubein

An avid traveler and aviation expert who has visited 173 countries, all 50 states and seven continents, Ramsey Qubein flies nearly 400,000 miles a year. As a North Carolina-based freelance journalist for publications including Conde Nast Traveler, Forbes, USA Today and Bloomberg among others, he explores the latest trends in aviation, hospitality, cruises and business.

Read more

Best time to book a flight from Sky Harbor Intl to Heathrow

Have a flexible travel schedule? Discover the best time to fly to Heathrow from Sky Harbor Intl with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Phoenix Sky Harbor Intl Airport to London Heathrow Airport

How far ahead should I book a flight from Phoenix Sky Harbor Intl Airport to London Heathrow Airport?

Use this chart to determine the optimal time to book a round-trip flight from Sky Harbor Intl to Heathrow. Price data was last updated on August 29, 2025.

To ensure you get the cheapest price possible for a flight from Phoenix Sky Harbor Intl Airport to London Heathrow Airport, you should look to book at least 10 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

What is the cheapest month to book a flight from Phoenix Sky Harbor Intl Airport to London Heathrow Airport?

Currently, November is the cheapest month in which you can book a flight from Phoenix Sky Harbor Intl Airport to London Heathrow Airport (average of $661). Flying from Phoenix Sky Harbor Intl Airport to London Heathrow Airport in June is currently the most expensive (average of $1,097). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from PHX to LHR?

Find hourly flight availability from Sky Harbor Intl to Heathrow. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated September 5, 2025.

When flying from Phoenix Sky Harbor Intl Airport to London Heathrow Airport, the time of day you fly usually plays a role in the price. Save by searching for a flight in the morning, which can drop the price by up to 15% versus a flight in the afternoon.

What is the cheapest day to fly from Phoenix Sky Harbor Intl Airport to London Heathrow Airport?

Use this chart to determine the cheapest time to fly round-trip from Sky Harbor Intl to Heathrow. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their Phoenix Sky Harbor Intl Airport to London Heathrow Airport flight should consider departing on Wednesday mornings when fares are most often at their lowest. Sunday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

Reviews of airlines servicing Heathrow

Get insights into the airlines that provide service to Heathrow. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Heathrow. Reviews last updated September 5, 2025.
Peruse reviews from past customers who have flown with Finnair, American Airlines, and JetBlue from Phoenix Sky Harbor Intl Airport to London Heathrow Airport to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Finnair
7.6
Good
1,321 reviews

Food

6.7

Entertainment

6.9

Boarding

7.6

Overall

7.6

Comfort

7.5

Crew

8.1

Reviews

1 / 20
6.0
Good

Rowland,Dec 2024

FRA - HEL

Finnair need to get a better system for boarding. Hundreds of passengers all attempting to get their boarding cards and passports checked at the gate and then get onto the aircraft is ridiculous, time consuming and frankly unfair to passengers.
Finnair
7.6
Good
1,321 reviews
Finnair
7.6
Good
1,321 reviews

Food

6.7

Entertainment

6.9

Boarding

7.6

Overall

7.6

Comfort

7.5

Crew

8.1

Reviews

1 / 20
6.0
Good

Rowland,Dec 2024

FRA - HEL

Finnair need to get a better system for boarding. Hundreds of passengers all attempting to get their boarding cards and passports checked at the gate and then get onto the aircraft is ridiculous, time consuming and frankly unfair to passengers.
American Airlines
7.2
Good
10,000 reviews
Finnair
7.6
Good
1,321 reviews

Food

6.7

Entertainment

6.9

Boarding

7.6

Overall

7.6

Comfort

7.5

Crew

8.1

Reviews

1 / 20
6.0
Good

Rowland,Dec 2024

FRA - HEL

Finnair need to get a better system for boarding. Hundreds of passengers all attempting to get their boarding cards and passports checked at the gate and then get onto the aircraft is ridiculous, time consuming and frankly unfair to passengers.
JetBlue
7.2
Good
2,916 reviews
Finnair
7.6
Good
1,321 reviews

Food

6.7

Entertainment

6.9

Boarding

7.6

Overall

7.6

Comfort

7.5

Crew

8.1

Reviews

1 / 20
6.0
Good

Rowland,Dec 2024

FRA - HEL

Finnair need to get a better system for boarding. Hundreds of passengers all attempting to get their boarding cards and passports checked at the gate and then get onto the aircraft is ridiculous, time consuming and frankly unfair to passengers.
Iberia
7.0
Good
2,913 reviews
Finnair
7.6
Good
1,321 reviews

Food

6.7

Entertainment

6.9

Boarding

7.6

Overall

7.6

Comfort

7.5

Crew

8.1

Reviews

1 / 20
6.0
Good

Rowland,Dec 2024

FRA - HEL

Finnair need to get a better system for boarding. Hundreds of passengers all attempting to get their boarding cards and passports checked at the gate and then get onto the aircraft is ridiculous, time consuming and frankly unfair to passengers.
British Airways
6.7
Okay
7,345 reviews
Finnair
7.6
Good
1,321 reviews

Food

6.7

Entertainment

6.9

Boarding

7.6

Overall

7.6

Comfort

7.5

Crew

8.1

Reviews

1 / 20
6.0
Good

Rowland,Dec 2024

FRA - HEL

Finnair need to get a better system for boarding. Hundreds of passengers all attempting to get their boarding cards and passports checked at the gate and then get onto the aircraft is ridiculous, time consuming and frankly unfair to passengers.

Related info for your journey

Find useful and relevant information for your journey from Sky Harbor Intl to Heathrow. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Phoenix Sky Harbor Intl Airport to London Heathrow Airport?

    United Airlines can get you from Phoenix Sky Harbor Intl Airport to London Heathrow Airport in just under 12h 56m. Your travel time can differ by up to . There are 5255 mi between Phoenix Sky Harbor Intl Airport and London Heathrow Airport.

  • What are the cheapest airlines flying from Phoenix Sky Harbor Intl Airport to London Heathrow Airport round-trip?

    Our cheapest airline available from Phoenix Sky Harbor Intl Airport to London Heathrow Airport is Delta. Our recent data shows that you can find tickets from as low as $498 on this airline. Additional options worth looking into are British Airways and Virgin Atlantic, starting at $525 and $548 round-trip. Users have found that Delta is 46% cheaper than the other options available to this destination.

  • What are the most reliable airlines from Phoenix Sky Harbor Intl Airport to London Heathrow Airport?

    The top 3 most reliable airlines when flying from Phoenix Sky Harbor Intl Airport to London Heathrow Airport are American Airlines (74%), Finnair (74%) and Iberia (74%).

  • What are the cheapest flights from Phoenix Sky Harbor Intl Airport to London Heathrow Airport?

    Looking for the cheapest flight from Phoenix Sky Harbor Intl Airport to London Heathrow Airport? While on average our users pay $1,860, our data indicates the cheapest price to be $389. The most popular route (Phoenix Sky Harbor Intl - London Heathrow), is priced around $465.

  • Can I find deals for flights from Sky Harbor Intl to Heathrow that include hotel bookings?

    Yes. In addition to deals on Sky Harbor Intl to Heathrow flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Sky Harbor Intl to Heathrow?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Sky Harbor Intl to Heathrow.

  • Can I find deals for business class flights from Sky Harbor Intl to Heathrow?

    Yes. Cheapflights offers flight deals from Sky Harbor Intl to Heathrow by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Phoenix Sky Harbor Intl Airport to London Heathrow Airport?

    Currently, November is the cheapest month in which you can book a flight from Phoenix Sky Harbor Intl Airport to London Heathrow Airport (average of $661). Flying from Phoenix Sky Harbor Intl Airport to London Heathrow Airport in June is currently the most expensive (average of $1,097). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near London Heathrow Airport?

Book flights to London Heathrow Airport if you plan to visit one of these locations
Hounslow
Hayes
Thornton Heath
Southend-on-Sea
Harrow
Canterbury
Croydon
Eastleigh
Dartford
Dover
Winchester
Stratford-upon-Avon
Orpington
Northampton
Gatwick
Borehamwood
Broadway
Aylesbury
Chelmsford
Bedford

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Sky Harbor Intl to Heathrow

See prices for flight routes from nearby airports that may be better suited for you.
Sky Harbor Intl to Gatwick flights
Sky Harbor Intl to London City flights
Sky Harbor Intl to Stansted flights
Sky Harbor Intl to Southend flights

Top 10 airlines flying from Sky Harbor Intl to Heathrow

Discover the top 10 airlines that operate flights from Sky Harbor Intl to Heathrow. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated September 5, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$498Average$916FlexibilityNo cancel feeOn-timeN/A
British AirwaysCheapest$525Average$905FlexibilityNo cancel feeOn-time70%
Virgin AtlanticCheapest$548Average$797FlexibilityNo cancel feeOn-time72%
JetBlueCheapest$559Average$849FlexibilityNo cancel feeOn-time62%
FinnairCheapest$565Average$910FlexibilityNo cancel feeOn-time76%
American AirlinesCheapest$567Average$992FlexibilityNo cancel feeOn-time71%
WestJetCheapest$577Average$698FlexibilityNo cancel feeOn-time60%
United AirlinesCheapest$582Average$822FlexibilityNo cancel feeOn-time69%
IberiaCheapest$587Average$1,012FlexibilityNo cancel feeOn-time77%
Air CanadaCheapest$604Average$808FlexibilityNo cancel feeOn-time67%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.