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$399+ Cheap flights from Tucson (TUS) 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 5/4. Fares are subject to change and may not be available on all flights or dates of travel.
TUS — LHR
Mar 13 — Mar 201
Fri 3/13
Fri 3/20
1 adult, Economy
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Cheap flight deals from Tucson to Heathrow

Cheapest flights from Tucson to Heathrow
Explore the most affordable flight options available from Tucson to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 11, 2026.

This Cheapflightsfares deal was found by Cheapflights users on 2/10. 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 4/229:38 am
TUS
-
LHR
2 stops22h 02m
Lufthansa
Tue 4/286:30 am
LHR
-
TUS
2 stops20h 25m
Lufthansa
Deal found 2/10$636
This Delta deal was found by Cheapflights users on 2/8. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/115:00 pm
TUS
-
LHR
1 stop16h 50m
Delta
Thu 3/198:55 am
LHR
-
TUS
2 stops19h 46m
Delta
Deal found 2/8$639
This Delta deal was found by Cheapflights users on 2/9. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/226:05 am
TUS
-
LHR
1 stop20h 10m
Delta
Tue 4/288:40 am
LHR
-
TUS
2 stops19h 53m
Delta
Deal found 2/9$648
This United Airlines deal was found by Cheapflights users on 2/11. 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 4/226:00 am
TUS
-
LHR
1 stop22h 20m
United Airlines
Tue 4/287:25 am
LHR
-
TUS
2 stops17h 49m
United Airlines
Deal found 2/11$649
This Cheapflightsfares deal was found by Cheapflights users on 2/9. 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 4/229:38 am
TUS
-
LHR
2 stops22h 02m
Lufthansa
Mon 4/276:30 pm
LHR
-
TUS
2 stops34h 52m
Lufthansa
Deal found 2/9$654
This United Airlines deal was found by Cheapflights users on 2/8. 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 3/117:15 am
TUS
-
LHR
1 stop15h 40m
United Airlines
Thu 3/1912:05 pm
LHR
-
TUS
1 stop16h 09m
United Airlines
Deal found 2/8$661
This Cheapflightsfares deal was found by Cheapflights users on 2/10. 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.
Tue 4/219:38 am
TUS
-
LHR
2 stops23h 02m
Lufthansa
Mon 4/277:30 pm
LHR
-
TUS
2 stops33h 52m
Lufthansa
Deal found 2/10$665

Find flight deals from Tucson to Heathrow

Discover tips and strategies to find the most affordable flight options for your journey from Tucson (TUS) 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 February 11, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$636
(Cheapflightsfares)

One-way from

$399
(United Airlines)

Popular in

June

Cheapest in

January

Average price

$725
Provider with most accurate pricing for Tucson-London Heathrow flight deals.
Search Deals
Provider most trusted by Cheapflights users for Tucson-London Heathrow flights.
Search Deals
From Tucson to London Heathrow
Search Deals
One-way flight from Tucson to London Heathrow
Search Deals
Highest demand for flights based on searches. 22% potential increase in price ($243 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($35 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in February 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Tucson 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 February 11, 2026.
Use the filters below to find and compare flights from Tucson to London Heathrow Airport that are best for you.

Fly from

Tucson

Fly to

Heathrow

Route

Depart

Return

Price

TucsonLondon

TUS - LHR

TUSLHR

Tucson

Wed 3/11

5:00 pm-4:50 pm

1 stop16h 50m

London Heathrow

Thu 3/19

8:55 am-9:41 pm

2 stops19h 46m

$639

TucsonLondon

TUS - LHR

TUSLHR

Tucson

Wed 4/22

6:05 am-10:15 am

1 stop20h 10m

London Heathrow

Tue 4/28

8:40 am-8:33 pm

2 stops19h 53m

$648

TucsonLondon

TUS - LHR

TUSLHR

Tucson

Wed 4/22

6:00 am-12:20 pm

1 stop22h 20m

London Heathrow

Tue 4/28

7:25 am-5:14 pm

2 stops17h 49m

$649

TucsonLondon

TUS - LHR

TUSLHR

Tucson

Wed 4/22

9:38 am-3:40 pm

2 stops22h 02m

London Heathrow

Mon 4/27

7:30 pm-9:22 pm

2 stops33h 52m

$655

TucsonLondon

TUS - LHR

TUSLHR

Tucson

Wed 3/11

7:15 am-5:55 am

1 stop15h 40m

London Heathrow

Thu 3/19

10:00 am-9:14 pm

1 stop18h 14m

$661

TucsonLondon

TUS - LHR

TUSLHR

Tucson

Thu 3/12

6:03 am-7:25 am

1 stop18h 22m

London Heathrow

Thu 3/19

9:10 am-9:14 pm

2 stops19h 04m

$666

TucsonLondon

TUS - LHR

TUSLHR

Tucson

Wed 3/25

6:25 am-6:55 am

2 stops17h 30m

London Heathrow

Thu 4/9

6:30 am-4:24 pm

2 stops17h 54m

$690

TucsonLondon

TUS - LHR

TUSLHR

Tucson

Wed 4/22

7:15 am-9:35 am

3 stops18h 20m

London Heathrow

Tue 4/28

9:30 am-10:02 pm

2 stops20h 32m

$693

TucsonLondon

TUS - LHR

TUSLHR

Tucson

Mon 5/4

6:30 am-9:20 am

2 stops18h 50m

$399

TucsonLondon

TUS - LHR

TUSLHR

Tucson

Wed 4/1

6:30 am-6:55 am

2 stops16h 25m

$399

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/9

Showing 1-10 of 13 results
1
2

Compare providers for flights from Tucson to Heathrow

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Tucson to Heathrow in February.
ProviderPrice AccuracyTrust Score*
FlightHubPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice Accuracy2 starsTrust Score*2 stars
OvagoPrice Accuracy2 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Tucson-London Heathrow Airport flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Tucson-London Heathrow Airport flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Tucson-London Heathrow Airport flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Tucson-London Heathrow Airport flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Tucson-London Heathrow Airport flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Tucson to Heathrow

Have a flexible travel schedule? Discover the best time to fly to Heathrow from Tucson 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 Tucson to London Heathrow Airport

How far ahead should I book a flight from Tucson to London Heathrow Airport?

Use this chart to determine the optimal time to book a round-trip flight from Tucson to Heathrow. Price data was last updated on February 6, 2026.

The best time to book flights from Tucson to London Heathrow Airport is 6 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

What is the cheapest month to book a flight from Tucson to London Heathrow Airport?

Currently, February is the cheapest month in which you can book a flight from Tucson to London Heathrow Airport (average of $298). Flying from Tucson to London Heathrow Airport in June is currently the most expensive (average of $801). 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.

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 February 11, 2026.
Get a feel of what it's like to fly with United Airlines, American Airlines, and British Airways from Tucson to London Heathrow Airport by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
9,273 reviews

Comfort

7.3

Overall

7.4

Entertainment

7.1

Crew

8.1

Boarding

7.7

Food

6.6

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family
United Airlines
7.4
Good
9,273 reviews
United Airlines
7.4
Good
9,273 reviews

Comfort

7.3

Overall

7.4

Entertainment

7.1

Crew

8.1

Boarding

7.7

Food

6.6

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family
American Airlines
7.2
Good
11,266 reviews
United Airlines
7.4
Good
9,273 reviews

Comfort

7.3

Overall

7.4

Entertainment

7.1

Crew

8.1

Boarding

7.7

Food

6.6

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family
British Airways
6.7
Okay
7,728 reviews
United Airlines
7.4
Good
9,273 reviews

Comfort

7.3

Overall

7.4

Entertainment

7.1

Crew

8.1

Boarding

7.7

Food

6.6

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family

Related info for your journey

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

  • What airport do you fly from for flights from Tucson to London Heathrow?

    If you book a flight to London Heathrow from Tucson, you will be flying from Tucson, which is the city’s only airport. Tucson (TUS) is located 7.5 mi from the center of Tucson. There are 0 flights from Tucson to London Heathrow per day from 3 different airlines.

  • How long is the flight from Tucson to London Heathrow Airport?

    Departing from Tucson to London Heathrow Airport will take you 16h 50m. Airlines will cover a distance of 5291 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • What are the cheapest airlines flying from Tucson to London Heathrow Airport round-trip?

    Our cheapest airline available from Tucson to London Heathrow Airport is British Airways. Our recent data shows that you can find tickets from as low as $647 on this airline. Additional options worth looking into are United Airlines and American Airlines, starting at $656 and $698 round-trip. These flights start at 22% lower than the current average price 3 months from now.

  • Can I find deals for flights from Tucson to Heathrow that include hotel bookings?

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

  • How can I find direct flights from Tucson to Heathrow?

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

  • Can I find deals for business class flights from Tucson to Heathrow?

    Yes. Cheapflights offers flight deals from Tucson 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 Tucson to London Heathrow Airport?

    Currently, February is the cheapest month in which you can book a flight from Tucson to London Heathrow Airport (average of $298). Flying from Tucson to London Heathrow Airport in June is currently the most expensive (average of $801). 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
Ilford
Croydon
Hounslow
Southend-on-Sea
Harrow
Eastleigh
Gatwick
Dartford
Dover
Winchester
Orpington
Northampton
Watford
Hayes
Borehamwood
Broadway
Aylesbury
Chipping Norton
Horley
Kingston upon Thames

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.

Top 3 airlines flying from Tucson to Heathrow

Discover the top 3 airlines that operate flights from Tucson 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 February 11, 2026.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest$647Average$799FlexibilityNo cancel feeOn-time70%
United AirlinesCheapest$656Average$908FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$698Average$855FlexibilityNo cancel feeOn-time71%

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